annotate Changes @ 70:2e84590720a6

typedef name
author kono
date Mon, 24 Feb 2003 11:42:53 +0900
parents dba8d111b7a0
children 3b5d293cea36
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 Thu Nov 25 17:27:12 JST 1999
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3
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4 subroutine call がない
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5 局所変数もない
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6 その代わり、大域変数を多用する
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7 大域変数のスコープは局所的
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8 Fortran の用に局所変数は静的に取る
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9 recursion する時には、自分で保存する
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10 subroutine call時のレジスタのセーブも局所的に行う
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11 それは、ちょっと変じゃない?
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12 やっぱりデフォルトのフレームは持ち歩くか?
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13
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14 recursive call とそうでないのを区別するか?
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15
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16 fp は用意する方が良い
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17
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18 関数定義と同時に、それ専用のfpの構造体を用意する
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19
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20 C をcompileする時には、stackを持ち歩く
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21 fp = (struct func_state *)stack
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22 えっと、どこに代入するの? そういう問題もあるわけね。
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23 じゃあ、fpは特別? それは気に入らないな。static
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24 なfpにすれば良いわけね。
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25
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26 func(void *stack) {
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27 static struct func_state {
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28 static struct func_state *fp;
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29 int local1;
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30 brahbrah...
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31 } func_state; // ここまで hidden
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32 func_state.fp = (stack -= sizeof(struct func_state));
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33 }
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34
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35 func_state をとってくる演算子があった方が良い? そうね。
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36 func.state
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37 ぐらい?
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38
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39 fp->local1 みたいなことだけするなら、C と同じになる。
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40
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41 call する時のarguemnt も、
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42 static な func_state に置く
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43 stack 上の func_state に置く
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44 という二通りの選択肢がある。Cと互換なら、当然、後者。
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45
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46 Recursive なら後者だが、この言語は状態遷移を記述するから、static
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47 なものでも良いはず。
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48
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49 Internal function は? あってもいいんだけど...
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50
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51 Recursive call する時には、 fp をsaveする必要があるね。
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52 (--(struct func_state *)stack) = fp;
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53 call callee(&fp->arg,continuation,stack);
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54 call しても、戻って来ないから... continuation は一般的にはcode
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55 だから... それは Internal function にするか。
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56
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57 continuation に一般的にcompileする方法を考えないといけないか。
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58 self は必要なわけね?
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59
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60 言語の名前も考えないといかんなぁ。
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61
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62 C からのコンパイラも書かないといけないのか...
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63
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64 Mon Dec 13 18:53:04 JST 1999
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65
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66 compiler based で、内部で partial evaluation できる?
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67
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68 func をdatabaseとして扱えないなら、それはできない。
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69
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70 しかし、状態遷移としては取り扱える。
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71
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72 func.state
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73 func.code
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74
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75 みたいな形にしてpartial evaluationすれば良い
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76
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77 でも止まるのか?
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78
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79 textual でない、中間的なコード表現があった方が良い? <-> interpreter?
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80
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81 Prolog ではなんでいけないの? --> Unification が重いから
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82
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83 Sat Nov 27 13:50:41 JST 1999
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84
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85 func.state とか作るのだったら、
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86 struct {
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87 struct {
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88 int i;
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89 } state;
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90 state *code = {
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91 i = i+1;
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92 };
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93 } name;
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94 みたいな形で、それ自体を構造化すれば? で、代入すると部分評価される。
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95 代入も可能。なるほど。
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96 *name.code;
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97 値はあるわけ? 値は &state でしょうね。
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98 self があれば、
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99 struct {
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100 struct {
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101 int i;
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102 } state,
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103 *code = {
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104 self->i = self->i+1;
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105 };
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106 } name;
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107 かな。self = state だよね。
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108
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109 union の拡張もあわせて議論すると...
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110
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111 Partial evalutator をセマンティクスや実行系にいれておくことは可能か?
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112
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113 byte code とか仮想マシンだったら可能。そうでない場合は?
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114
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115 いずれにせよ、構造体のタグのunique性を修正しないとだめだな。
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116
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117 ヘッダファイルはどうするの?
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118
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119 Mon Dec 13 18:53:18 JST 1999
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120
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121 library との整合性は?
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122
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123 exec sequence では、
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124 (--(struct func_state *)stack) = fp;
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125 call callee(&fp->arg);
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126 という形でpointerだけ渡すの? それは変だよね。
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127
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128 値渡しにするとすれば、複数の値を渡せたほうが良い。
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129
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130 func(void *stack) {
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131 static struct func_state {
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132 static struct func_state *fp;
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133 int local1;
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134 brahbrah...
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135 } func_state; // ここまで hidden
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136 func_state.fp = (stack -= sizeof(struct func_state));
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137 }
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138
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139 の引数自体が、構造体であるべき。
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140
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141 func(
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142 struct void *stack
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143 ) {
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144 static struct func_state {
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145 static struct func_state *fp;
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146 int local1;
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147 brahbrah...
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148 } func_state; // ここまで hidden
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149 func_state.fp = (stack -= sizeof(struct func_state));
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150 }
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151
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152 で、構造体に register storage を許す。
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153
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154 func(
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155 static struct argment {
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156 register void *stack;
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157 register void *continuation;
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158 }
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159 ) {
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160 static struct func_state {
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161 static struct func_state *fp;
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162 int local1;
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163 brahbrah...
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164 } func_state; // ここまで hidden
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165 func_state.fp = (stack -= sizeof(struct func_state));
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166 }
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167
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168 すると、caller の方も、構造体を引数とするのが自然。
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169
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170 call caller(
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171 static struct argment {
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172 register void *stack;
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173 register void *continuation;
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174 } arg = {a,b};
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175 )
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176
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177 みたいな。もちろん、この構造体はインタフェースと呼ばれる。
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178
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179 argument は、callee にあった方が良いけど、caller 側にあっても
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180 良い。register なんかは、そう。
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181
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182 caller(interface caller_arg = {a,b,c})
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183 みたいなsyntax かな。
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184 caller->interface = {a,b,c};
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185 *caller->code;
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186 を、
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187 caller(a,b,c);
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188 と称する。
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189
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190 function には、interface と code と state があることになる。
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191
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192 state にアクセスする時のlockは? protected state? synchonized state かな?
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193 もちろん、sequential implementatoinでは、そんなものはいらない。
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194
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195 function {
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196 interface:
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197 register int a;
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198 register struct self self;
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199 state:
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200 int b;
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201 serialized int c;
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202 code:
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203 b = a;
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204 }
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205
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206 int にvoid value を定義する。実装は重くなるけど...
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207
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208 serialzed の semantics は?
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209
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210 もう少しmicro-Cに近く!
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211
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212 carring state と static state。
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213
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214 Mon Dec 13 19:42:41 JST 1999
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215
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216 interface に regsiter keyword を使うのは、あまりに
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217 実装よりすぎる。でも、でないと状態にできない?
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218 そんなことはないか。やっぱりcaller側のstatic 領域に
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219 直接書き込む?
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220
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221 だとCより遅そう。でも、引数に40個とかかかれたら...
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222
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223 Wed Dec 15 14:09:49 JST 1999
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224
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225 C と互換にする?
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226 goto function(argments);
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227 goto *continuation(argments);
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228 みたいな感じで。
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229
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230 stackの管理は? どうせ、library との互換はとらないと
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231 いけないんだから...
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232
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233 local 変数がある場合は stack を動かす。でも、戻す奴がいない。
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234 closure 化するか?
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235
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236 return した時の挙動が複雑になる。大域returnするわけだら。
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237
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238 argments をstatic 領域にかきこむ方式だと互換性がとれない。
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239 stack 上の frmae pointer 上にないとダメだから。
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240
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241 両立させるのは無理か? つまり、これだと、呼び出された方の
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242 frame semantics は、C と互換になる。だから、stackの直後に
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243 frame pointer があると思っている (そうか? ) frame pointer
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244 stack pointer に沿って移動した直後に、そこからのoffset
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245 で引数を操作することになる。
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246
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247 つまり、それはだめだったことじゃない? つまり、goto だと、
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248 frame pointer は、stack の直後とは限らないから。前の
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249 frmae pointer 相対に引数にアクセスしてくれれば別だけどね。
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250
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251 stack に引数を積むのは容認して、goto の場合は、向こう側で
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252 stack を畳むってのは? ということは、普通の関数と定義の
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253 方法を変えるってことか。ま、悪くはないか。
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254
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255 すると、goto のsemantics は、C と互換になる。それを受ける
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256 方が異なることをする。それは、なんかおかしいな。それに、
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257 それだと関数呼び出しが軽くならない...
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258
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259 ということは、やはり、C のcall は、call funciton で
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260 実現して、その他の呼び出しは、すべて、goto 扱いに
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261 する方が正しいだろう。
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262
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263 問題は、この言語の関数をcallされた時だな。dual entry にして、
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264 call の時と、goto の時を区別するか。
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265 func: stack processing
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266 func_goto: normal processing
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267 ...
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268 みたいな感じ。でも、return はないから...
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269
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270 このあたりも自分で記述できる言語であるべきだよね。その通り。
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271 つまり、C とのstub も自分で記述すると言うことか。
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272
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273 protocol function {
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274 interface c {
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275 register "%esp" struct {
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276 entry code ret(int);
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277 void *fp;
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278 } *sp;
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279 register "%ebp" void *fp;
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280 };
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281 code function_code {
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282 fp = sp;
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283 sp += sizeof(struct local);
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284 struct local *local = sp;
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285
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286 local->i = 1;
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287 goto *fp->ret(local->i),sp=fp; // return(local->i);
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288 };
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289 }
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290
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291 みたいな感じでさ。さっすが、アセンブラ。いまいちreturnが汚いけど。
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292 まぁ、return はそのままreturnでもいいけどさ。
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293
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294 あ、これは良いかも知れない。code が複数かけるから。
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295
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296 state 以外は、consitent state であることを保証しない。ってのは?
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297 local 変数は使っても良いけど、call/goto の前後で、値を保証しないか...
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298
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299 うーん、だんだん炸裂してるなぁ。
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300
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301 だから、レジスタに対するマッピングの記述と、そうでない部分の
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302 記述は分離するべきでしょうね。
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303
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304
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305 全部一辺に実装するわけにはいかないからぁ...
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306
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307 Thu Dec 16 13:44:21 JST 1999
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308
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309 lock は状態遷移レベルで実現するのだから、self などを
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310 使ってlockする必要はないはず。
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311
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312 全体の直列化は、状態遷移レベルで、
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313 lock(storage) -> transition
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314 みたいな形で記述すれば良い。この当たりを、どのように記述するかは
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315 もう少し先送りしよう。
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316
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317
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318 引数はレジスタ渡しにしよう。長い引数は、呼び出し側の領域への
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319 ポインタとする。実装を規定しても良い。そうすれば、varargs
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320 みたいなものはなくなる。だいたい、なんで、そんなものがいるんだろう?
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321 配列を渡せばいいじゃん。
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322
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323 なので、引数は一つ(or 二つ)に限るという方法もある。
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324
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325 とすると、やはり、前もって静的領域や動的領域を確保することは
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326 できない。
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327
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328 この言語では動的領域は自分で確保するわけだから、その点は問題ない。
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329
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330 Thu Dec 16 20:24:55 JST 1999
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331
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332 とすると関数呼び出しは、
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333 # register save
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334 # set 1st argument in register %eax
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335 # set 2nd argument in register %ecx
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336 # set extra aguments in save area
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337 # set extra argument pointer in %edx
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338 jmp function
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339 という形式になるわけね。second を処理するのはめんどくさいから一つ
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340 にしよう。
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341
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342 えーと、frame pointer はないけど、コンパイルの手順からすると
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343 あった方が良い。しかし、frame pointer そのものをstatic
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344 にとるのはまずい。だから、frame pointer がfirst argment
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345 ということにする方が正しい。とすると引数は、さらに、その
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346 後と言うわけか。
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347 f(fp,argment)
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348 fp を渡すのにさらにargment をレジスタで渡すのはおかしい。おかしいけど、
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349 ま、良いか。
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350
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351 return しないなら、return type の定義をとるのは変だな。
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352
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353 f(fp,arg1,arg2,arg3) とすると、それぞれが決まったレジスタに入って、
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354 多い分は配列にあると思われる。ふむふむ...
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355 fp->xx
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356 でアクセスすれば、そのまま局所変数になる。全部、配列で
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357 送っても良い。
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358
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359 .set label,value
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360
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361 で as は値をセットするようですね。
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362
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363 関数コールの後は戻って来ないから後始末の心配はしなくてよい。
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364 frame pointer を使ったら自分で面倒を見ること。
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365
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366 だと
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367 a = atoi(s);
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368 みたいなことはできない...
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369
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370 普通のCの定義と交じると間違いやすい。
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371
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372 とすると、struct と同様に、
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373 protocol
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374 code
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375 interface
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376 state
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377 を用意するわけね。時間あるのかぁ?
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378
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379 とりあえず、register 渡しのfunction 定義とgoto文を実装する。
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380
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381 code name(register "%ebp" void *arg) {
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382 goto name(arg);
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383 }
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384
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385 ぐらいかな? で、first argment が必ずregisterにのるようにしないと
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386 いけない。register storage class を入れて、
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387 register "%ebp" void *arg
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388 とかするわけね。
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389
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kono
parents:
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390 ってことは、まず、レジスタを実装しないといけないわけね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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391
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kono
parents:
diff changeset
392 で、stack を使った演算は、一応、そのままにする? それでも動くはず。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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393 式の途中でgotoは使えないんだから、それでいいはず。
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kono
parents:
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394
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kono
parents:
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395 で、それから、これを拡張していく。
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kono
parents:
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396
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kono
parents:
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397 interface c {
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parents:
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398 register "%ebp" void *arg;
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parents:
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399 }
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parents:
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400 code name(interface c) {
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parents:
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401 goto name(c.arg); // c. は省略可能
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parents:
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402 }
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kono
parents:
diff changeset
403
eeca07d1b1c2 *** empty log message ***
kono
parents:
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404 とかね。さらに、
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kono
parents:
diff changeset
405
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kono
parents:
diff changeset
406 protocol name {
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kono
parents:
diff changeset
407 interface c {
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parents:
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408 register "%ebp" void *arg;
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parents:
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409 }
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parents:
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410 code name(interface c) {
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parents:
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411 goto name(arg);
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parents:
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412 }
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kono
parents:
diff changeset
413 code name1(interface c) {
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kono
parents:
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414 goto name(arg);
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parents:
diff changeset
415 }
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parents:
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416 }
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kono
parents:
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417
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kono
parents:
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418 などとするわけか。なんと、これが C と共存するわけね。うーん。
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parents:
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419
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parents:
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420 Fri Dec 31 11:44:03 JST 1999
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kono
parents:
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421
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parents:
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422 code でなくて、別な名前のほうが良くない? segment? action?
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423
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parents:
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424 レジスタ名が入るのは、やっぱりいや。optionalには許す。
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kono
parents:
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425
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parents:
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426 interface は構造体のようなものだから... 構造体でいいんじゃない?
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kono
parents:
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427 構造体の場合は... malloc する? う、うーん。malloc するとして、
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kono
parents:
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428 いつfree するの?
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parents:
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429
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parents:
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430 再入するときには、壊れてていいんじゃない? multi-thread でなければね。
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kono
parents:
diff changeset
431 multi thread では、状態は、レジスタ経由または、thread local に持つ
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parents:
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432 必要がある。static は、だから thread local に持たなくてはならない。
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parents:
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433 大域変数に割り振っちゃだめ。でも、いまは、やめて
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kono
parents:
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434
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parents:
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435 interface は、とりあえず、二つまでの値渡しにしよう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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436 self と arg
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kono
parents:
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437 ですね。
eeca07d1b1c2 *** empty log message ***
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parents:
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438
eeca07d1b1c2 *** empty log message ***
kono
parents:
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439 もう少し拡張しやすいコンパイラがいいなぁ。
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kono
parents:
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440
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441 code name (c,a)
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parents:
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442 struct state *c; struct arg *a;
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443 {
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444 goto name(arg);
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parents:
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445 }
eeca07d1b1c2 *** empty log message ***
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parents:
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446
eeca07d1b1c2 *** empty log message ***
kono
parents:
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447 local 変数は? この互換性の問題かぁ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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448
eeca07d1b1c2 *** empty log message ***
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parents:
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449 KL/1 を意識して、interface は heap に置くことにしても良い。
eeca07d1b1c2 *** empty log message ***
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parents:
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450 GC は言語に入れておくべきだが、interfaceは machine independent
eeca07d1b1c2 *** empty log message ***
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parents:
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451 であるべき。だとすれば use/forget みたいものはいるだろう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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452 でも今のところは考える必要はない。
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kono
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453
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parents:
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454 えーと、
eeca07d1b1c2 *** empty log message ***
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parents:
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455 code name (c,a)
eeca07d1b1c2 *** empty log message ***
kono
parents:
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456 struct state *c; struct arg *a;
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kono
parents:
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457 {
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kono
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458 int i;
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parents:
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459 goto name(arg);
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parents:
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460 }
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kono
parents:
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461 の時の一時変数iはどうするの? 基本的にはレジスタ割り当てだけど...
eeca07d1b1c2 *** empty log message ***
kono
parents:
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462 使用させない? んー、大胆な御意見。まぁ、やっぱりheapに割り当てちゃう
eeca07d1b1c2 *** empty log message ***
kono
parents:
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463 のが簡単か。でも、どうせ抜ける時にはいらなくなるわけだから...
eeca07d1b1c2 *** empty log message ***
kono
parents:
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464
eeca07d1b1c2 *** empty log message ***
kono
parents:
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465 ほんらい、この変数は、次のcallでは必要無くなるのが普通。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
466
eeca07d1b1c2 *** empty log message ***
kono
parents:
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467 とにかく、レジスタ変数は必要なんでしょう?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
468
eeca07d1b1c2 *** empty log message ***
kono
parents:
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469 だから、GC と合わせて言語を設計すべきだよね。API を規定して、
eeca07d1b1c2 *** empty log message ***
kono
parents:
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470 異なるGCを選択できるようにする。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
471
eeca07d1b1c2 *** empty log message ***
kono
parents:
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472 Sat Jan 1 22:40:22 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
473
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
474 とーにかく、 storage class regisgter を実装しよう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
475
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
476 stmode=REGISTER
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kono
parents:
diff changeset
477
eeca07d1b1c2 *** empty log message ***
kono
parents:
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478 で、local storage とおなじ扱いとする
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
479 static register? は、ない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
480
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
481 symbol table に storage class をたせば? dsp==EXTRN で判定しているから、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
482 local 変数が36以上あるとおかしくなるぞ?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
483
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
484 sc は GVAR/LVAR だけど、regsiter は LVAR の特殊な奴だから、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
485 sc に入れるほうが正しいか...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
486
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
487 Sun Jan 2 01:47:17 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
488
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
489 register 変数はできました。けど、regsiter を二つ使うと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
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490 一杯になってしまうので、REGISTER6 でコンパイルしないと
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
491 結構ひどい。が、register 変数を%esi,%edi に割り当てれば
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
492 いいか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
493
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
494 Sun Jan 2 04:43:04 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
495
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
496 で、
eeca07d1b1c2 *** empty log message ***
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parents:
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497 code name (c,a)
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kono
parents:
diff changeset
498 struct state *c; struct arg *a;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
499 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
500 goto name(c);
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kono
parents:
diff changeset
501 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
502 の一時変数無しは実装できます。引数は二つまでね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
503
eeca07d1b1c2 *** empty log message ***
kono
parents:
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504 .file "tmp.c"
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kono
parents:
diff changeset
505 .version "01.01"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
506 gcc2_compiled.:
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kono
parents:
diff changeset
507 .text
eeca07d1b1c2 *** empty log message ***
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parents:
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508 #
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parents:
diff changeset
509 # code name(c,a)
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kono
parents:
diff changeset
510 .align 2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
511 .globl code
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
512 code:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
513 .type code,@function
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
514 # struct state *c; struct arg *a;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
515 # {
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kono
parents:
diff changeset
516 # goto name(c);
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kono
parents:
diff changeset
517 movl %esi,%esi
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
518 jmp name
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
519 _5:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
520 .size code,_5-code
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
521 .ident "Micro-C compiled"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
522
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
523 う、すごい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
524
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
525 goto 文がめんどくさい。stack をたたんで、jmp すれば
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
526 よいだけだが..
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
527
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
528 Sun Jan 2 11:17:50 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
529
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
530 普通のcallをcontinuation baseにすることができる?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
531
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
532 Sun Jan 2 20:28:45 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
533
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
534 goto 文だけど、やはり、一度、expr で生成してから、top level
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
535 で jump code を生成しよう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
536
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
537 Tue Jan 4 03:32:55 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
538
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
539 code をtypeにしないと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
540 code *p;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
541 とか書けないね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
542 int *p();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
543 と同じだけどさ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
544
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
545
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
546 main(ac,av)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
547 int ac;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
548 char *av[];
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
549 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
550 goto code1(ac,av);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
551 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
552
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
553 code code1(ac,av)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
554 int ac;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
555 char *av[];
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
556 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
557 if (ac)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
558 goto code1(ac,av);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
559 else
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
560 goto ac(ac,av);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
561 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
562
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
563 Tue Jan 4 04:56:56 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
564
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
565 うーん、なんかレジスタにつむ順序が違う
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
566 これは、adecl がreverseにつむから。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
567
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
568 code のretrun
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
569
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
570 やはりcodeはtypeにしないとだめ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
571
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
572 main()
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
573 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
574 goto code1();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
575 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
576
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
577 とかだと、main に戻って来れない。もちろん、code1() 以降で、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
578 return するわけにはいかない。(main の disp をcode1 は知り得ない)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
579 goto label をcode1の引数に送れば?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
580
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
581 main()
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
582 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
583 goto code1(ret);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
584 ret:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
585 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
586
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
587 これだと、ret がforward labelかどうか分からないけど?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
588
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
589 code1 中で使う中間変数を stack 上にとるのは悪くない。しかし、それを
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
590 %ebp 経由でアクセスするということは、main の中間変数を壊すということ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
591 それを防ぐには、main 中のgoto codeで、%ebp を修正してやれば良い。
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kono
parents:
diff changeset
592 (今は戻って来ないので問題ない)
eeca07d1b1c2 *** empty log message ***
kono
parents:
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593
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kono
parents:
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594 code1 のgoto では、戻って来ないから、その必要はない。しかし、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
595 label をcode1 中で渡されると、ちょっと気まずい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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596
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parents:
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597 とすると、それは禁止して、main() 中でstackをたたんでからgotoするか?
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parents:
diff changeset
598 そうすると、無限後退して、結局、帰れないことになる... うーん。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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599
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parents:
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600 main() 中のlocal code を許せば、それは解決するが..
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parents:
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601
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parents:
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602 main()
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parents:
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603 {
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parents:
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604 goto code1(code2);
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kono
parents:
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605 code code2() {
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parents:
diff changeset
606 return;
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parents:
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607 }
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parents:
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608 }
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kono
parents:
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609
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parents:
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610 みたいな感じ。でも、そうするとscope rule を変える必要があるので厳しい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
611 ま、悪くはないけどね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
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612
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kono
parents:
diff changeset
613 continuation を明示する方法もある。
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kono
parents:
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614
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kono
parents:
diff changeset
615 main()
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kono
parents:
diff changeset
616 {
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parents:
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617 goto code1(continuation);
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parents:
diff changeset
618 }
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parents:
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619 code code1(ret)
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kono
parents:
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620 code (*ret)();
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kono
parents:
diff changeset
621 {
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parents:
diff changeset
622 goto *ret;
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kono
parents:
diff changeset
623 }
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kono
parents:
diff changeset
624
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kono
parents:
diff changeset
625 かな? call/cc ?
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kono
parents:
diff changeset
626
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kono
parents:
diff changeset
627 label へのgotoを許すのもいいけど、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
628 でも、label を許すと、すごくspagettyにならない?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
629
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kono
parents:
diff changeset
630
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
631 Tue Jan 4 11:47:24 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
632
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kono
parents:
diff changeset
633 contiunation じゃなくて、return keyword を使おう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
634 (実際、continuation と少し違うし)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
635 type が少し変になるけど、まあ良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
636
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
637 int
eeca07d1b1c2 *** empty log message ***
kono
parents:
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638 main()
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kono
parents:
diff changeset
639 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
640 goto code1(return);
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kono
parents:
diff changeset
641 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
642 code code1(ret)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
643 code (*ret)(int);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
644 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
645 goto *ret(3);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
646 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
647
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
648 だな。prototype も付けないといけないか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
649
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
650 Tue Jan 4 12:21:44 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
651
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
652 これだとmethodがすべてstatic になってしまう。dynamic なmethod
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
653 呼び出しにするには? dipatcher を自分で作ることになる。かなり
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
654 めんどくさいが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
655
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
656 code method(obj,arg)
eeca07d1b1c2 *** empty log message ***
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parents:
diff changeset
657 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
658 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
659
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
660 か、あるいは、inline にするか... #define のかわりに inline ねぇ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
661 これはあとで考えて良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
662
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
663 Tue Jan 4 14:22:19 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
664
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
665 main の変数を書き潰すのと、gotgo (*reg)(123) での値は、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
666 register 渡しで、current register にのらないので、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
667 結局、return label は専用に作る必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
668
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
669 Tue Jan 4 18:14:07 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
670
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
671 stack を継ぎ足して、呼び出す方式を取れば、call by value
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
672 のregister 渡しを制限する必要は無くなる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
673
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
674 複数の値を返すことも容易だ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
675
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
676 .file "tmp.c"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
677 .version "01.01"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
678 gcc2_compiled.:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
679 .text
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
680 #
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kono
parents:
diff changeset
681 # code name(a,b,c,d,e,f)
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kono
parents:
diff changeset
682 .align 2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
683 .globl code
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
684 code:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
685 .type code,@function
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
686 # struct arg *a,*b,*c,*d,*e,*f;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
687 # {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
688 # int g;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
689 # goto name(a,b,d,e,f);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
690 jmp name
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
691 _5:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
692 .size code,_5-code
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
693 .ident "Micro-C compiled"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
694
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
695 おお?!
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
696 %esp new %esp = old %esp - 12 -4
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
697 %ebp-4 = g
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
698 %esi = a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
699 %edi = b
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
700 %ebp = old %esp 0
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
701 %ebp+4 = c code_arg_offset=0
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
702 %ebp+8 = d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
703 %ebp+12 = e
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
704 %ebp+16 = f
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
705
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
706 interface は付けよう! というか、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
707 goto name(struct {xxxx})
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
708 みたいな感じで良いわけね。どれをregisterにいれるかと言う問題はあるが。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
709
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
710 で、どうやってcallすればいいわけ? emit_pushするかわりにpush
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
711 する?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
712
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
713 うう、これでは、だめか。code argument の数が変わると、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
714 ebp をいちいち動かすことになる。そこにはold sp があるから
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
715 そいつもコピーする必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
716
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
717 %esp new %esp = old %esp - 20
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
718 %ebp-20 = g
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
719 %esi = a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
720 %edi = b
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
721 %ebp-16 = c code_arg_offset= -16 ((nargs-max_reg)*int_size)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
722 %ebp-12 = d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
723 %ebp-8 = e
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
724 %ebp-4 = f
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
725 %ebp = old %esp 0
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
726
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
727 そうか、function からcallする時には、local 変数を書き潰して良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
728
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
729 # goto name(a,b,d,e,f);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
730
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
731 %esp new %esp = old %esp - 20
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
732 %ebp-20 = g
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
733 %esi = a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
734 %edi = b
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
735 %ebp-16 = c code_arg_offset= -16 ((nargs-max_reg)*int_size)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
736 %ebp-12 = d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
737 %ebp-8 = e
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
738 %ebp-4 = f
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
739 %ebp = old %esp 0 disp=0 (*)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
740 local1 <----16 local variable
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
741 %edx -12 <- disp_offset
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
742 %ecx -8
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
743 %ebx -4
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
744 %ebp = %esp 0
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
745 %eip 4 <- arg_offset
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
746
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
747 となる。ということは、pushl %ebp は、間違い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
748
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
749 だけど、%ebp をそのまま使うのは良くない。disp_offset がかかっているから。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
750 だから、もう一度 pushl %ebp したほうがよい。しかし、push する先は、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
751 上の、(*)。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
752 leave movl %ebp,%esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
753 popl %ebp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
754 じゃなかったか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
755
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
756 Thu Jan 6 13:00:33 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
757
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
758 できたね。これでとりあえず動くはず。速度は問題だが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
759 あとは、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
760 ANSI-C prototype
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
761 ANSI-C prototype check
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
762 Interface Definietion
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
763 GC support
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
764 Direct handling of Frame
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
765 だね。簡単に出来そう? たぶん...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
766
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
767 Fri Jan 7 09:42:53 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
768
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
769 goto 文が動いてなかった。あと peep hole optimization version も
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
770 作るか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
771
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
772 continuation として label を送れるようにするべきか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
773 そうすると便利なんだけど、ちょっと、汚いプログラムが
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
774 出来るようになる。あと、送り側の環境(frame)を維持する
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
775 必要がある。ま、できなくはないか...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
776
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
777 そうすると、label が値を持つようになる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
778 a = label:;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
779 とか。うーん。label:(a,b,c) {}; みたいな形で、parallel 代入を許すと言う
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
780 手もあるね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
781
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
782 こちらの方がCとの相性は良いが... main() { label:(){ ... } }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
783 みたいなnestを許すかどうかと言う問題がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
784 変数の参照を許さなければ、特に問題はない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
785
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
786 a = label: は、二重の意味があるなぁ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
787
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
788 言語の名前。DinnerBell II とか? join も入れる?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
789 code entry_a().entry_b() {}
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
790 ですか? parallel call も?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
791
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
792 Fri Jan 7 19:53:53 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
793
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
794 いまのままだと return が環境を持ってないから、大域脱出できない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
795 まぁ、環境を入れてもいいんだけど、どこに置くかと言う問題が
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
796 あるね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
797
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
798 そうじゃなくて、return 側で判断するか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
799 retrun(ID)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
800 みたいな形でIDで判断する。そうすれば、return 側でID
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
801 を見て判断できる。けど...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
802
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
803 まぁ、はやり、環境を持って歩く方がいいかなぁ。でも、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
804 引き渡しているから、二つ引き渡して、片方を使われたときに、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
805 反対側が消えてしまうのはいたいよね。今のままならば、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
806 そういうことは起こらない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
807
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
808 continuation 特有の問題を避けるなら、このままでもいいんだが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
809 contrinuation や環境は、このシステムでは自分で作ることが
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
810 できるからね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
811
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
812 そうなんだけど.... retlabel や retcont は実はオブジェクト
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
813 全体に一つあれば良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
814
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
815 引数を渡すときに、そこに環境へのポインタをいれてやれば良いので、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
816 解決は割と簡単だが、そうすると、例の構造体を引数で渡すと言う
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
817 問題を解決する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
818
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
819 でも、今の実装ならば、まったく同じ変数の構成ならばコピーは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
820 実際には起こらないわけだから問題ないはず。特に、それを保証するために、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
821 interface を実装する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
822
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
823 return ->
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
824 (void *)old bp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
825 return address
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
826
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
827 bp を直接操作できるようにするといいんだけど....
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
828
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
829 Sat Jan 8 08:49:59 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
830
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
831 今は、code 内ではreturnできないわけだけど。実は、return って、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
832 code return0(i) int i; { return(i); }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
833 か? 今は禁止してないから書けちゃうよね。どういうcodeが出るんだろう?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
834
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
835 doreturn() では retpending をセットしているだけだから、control=1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
836 のまま。で、code の終りにくるのでエラーになる。checkret は、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
837 statement の引数で判断するようにしたほうが合理的だろう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
838
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
839 大域脱出は結構根が深いよね。途中をスキップされてうれしいか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
840 destructor と同じで、途中のcodeは全部呼びたいのが普通だろう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
841
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
842 bp が同じになるまで return すれば良いわけだよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
843 return と同じで、明示的に環境を引き渡すようにするか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
844 type は void * で良い?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
845
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
846 return する時にstackの上限を越えているかどうかを自分でチェックする
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
847 必要があるね。誰にreturnするかをcodeで明示すれば良いわけだけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
848
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
849 code return0(i) int i; { return(i); }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
850
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
851 を許して、そこで、frame pointer を大域あるいは渡した引数と
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
852 比較して処理する?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
853 code return0(i,env) int i; env *env; {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
854 if (env==self) return(i);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
855 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
856 あれ? これはおかしいよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
857 code return0(i,env) int i; env *env; {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
858 if (env!=self) {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
859 env->return();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
860 return(i);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
861 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
862 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
863 も、なんか変だよなぁ。呼び出しと逆順に帰りたいわけだが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
864 実際、逆順には帰っているわけだよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
865
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
866 return の中でこそこそ比較するという技もあるけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
867
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
868 問題は、destructor に渡す情報だよね。もちろん、self で良いわけだが、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
869 このあたりは、言語外の問題で、それを明示的にしたいから、この言語を
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
870 作っているわけなのだから、これを内部で処理するのはおかしい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
871
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
872 code return0(i) int i; { return(i); }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
873
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
874 これだと、return の型が合わないと言う問題が生じるな。簡単には
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
875 チェックできない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
876 int
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
877 main() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
878 code a() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
879 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
880 code b() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
881 return(i);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
882 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
883 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
884 にすれば、check はできるようになる。でも、これだと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
885 int
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
886 main() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
887 a: {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
888 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
889 b: {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
890 return(i);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
891 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
892 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
893 と差がない。module 化を言語外でやるというのが主旨なのだから、これでは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
894 まずい。これは高級アセンブラなのだから。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
895
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
896 あそうか、return と、大域脱出時のabortとは、状況が違う。だから、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
897 別なcode を呼び出さないとだめ。あるいは、値で区別するか。これは、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
898 logic programming のfail/success と似ている。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
899 main() { } abort { ... }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
900 でもいいけど?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
901 main() { code abort { ... }; code return { ... }}
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
902 かな?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
903
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
904 本来、subroutine call自体が、かなりの省略形なわけだから、これは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
905 仕方がない。今のままで通常のsubroutine callをシミュレートできるのか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
906 code (struct arg {...},void *sp) {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
907 struct env;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
908 push(sp,arg);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
909 push(env,arg);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
910 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
911 できるけど、ちょっと重い。やはり、frame pointer を直接操作しないと
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
912 だめ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
913
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
914 goto 文のほうに、env を一緒に送るものを作ったほうがいいのかも。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
915 goto (*ret)(),environment;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
916 かな。type は? (void *)?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
917 goto ret(),environment;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
918 にはならないの? そうすれば、自分でthreadを制御できる。environment
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
919 の正当性を評価しなくて良いの? まぁ、ねぇ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
920
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
921 これは実装は容易だが... goto といちいち書くのが本当にいいのか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
922 env に対するoperationがあった方がいいなぁ。push とか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
923
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
924 code return0(i) int i; { return(i); }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
925
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
926 を認めれば、return 擬変数はいらなくなる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
927
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
928 でも、実は、return は、caller の引数の数と一致してないといけない
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
929 わけだから、 code return0(i) int i; { return(i); } はだめ。env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
930 と一致してないといけない。ということは分離するとまずいんじゃない?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
931 あれ? そんなはずないな。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
932
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
933 Sun Jan 9 01:15:56 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
934
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
935 やはり、分離してはまずい。もともと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
936 goto func(arg);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
937 自体が、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
938 goto func(arg) with current.env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
939 みたいなものだ。つまり、これは、DinnerBell の、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
940 self message: arg
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
941 と同じ。self->func(arg); でも良い。が、function callと区別が付かないのは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
942 良くない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
943
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
944 そうすると、type code はsize int でなくなる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
945 code *p = func;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
946 ではいけなくて、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
947 code p = {func,env};
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
948 でないといけない。実際、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
949 goto func(arg)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
950 では、current environment を pushl %ebp でstack = current env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
951 に積んでいるわけだから。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
952
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
953 いずれにせよ、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
954 struct p = q;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
955 は実装する必要がある。localな、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
956 code p = {func,env};
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
957 も動くはずだが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
958
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
959 code (*p)();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
960 goto (*p)(arg);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
961
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
962 はだから少しおかしい。これは、goto がenv を補っていると考えるべき。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
963
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
964 このようにすると、常に、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
965 func,env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
966 の組をcodeとみなすことになる。これは、object と呼ぶべきだ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
967 ただ、既存のobjectとは別だよな。actor の方が良い?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
968
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
969 うーん、これでjoinを入れれば、完璧なDinnerBellだな。並列送信はないけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
970
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
971 Sun Jan 9 01:40:05 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
972
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
973 local 変数の初期化はallocation の後に遅らせる必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
974 nptr に入れられるはずだよね? nptr に初期化フラグを足すか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
975
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
976 文途中で出現するlocal変数の初期化。ちゃんと動いているの?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
977
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
978 構造体のcopyは、lcheck を修正すべきでない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
979
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
980 Sun Jan 9 08:49:43 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
981
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
982 うーん、なんか修正が多いなぁ。あと、関数呼び出し、goto 文の
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
983 構造体への対応か。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
984
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
985 goto (*code)();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
986
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
987 が、self env を使うのか、code の先の値を使うのかを区別する
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
988 必要がある。もし*を使わないとするとlabel(FNAME)との区別が
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
989 つかないぞ。あ、でも、環境を持ち歩くことにしたから、label
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
990 へもjumpしようと思えばできるね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
991
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
992 並列送信はなくても、この構成ならばstatement単位の並列性を検出するのは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
993 容易だろう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
994
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
995 やればできるけど、この修正の量だと1日じゃ終らないかなぁ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
996 不動小数点も入れるのでしょう?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
997
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
998 Mon Jan 10 09:00:12 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
999
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1000 引数に構造体を許すには、必ずANSI-Cにする必要がある。難しくは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1001 ないが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1002
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1003 goto 文には label, code, continuation の3つが来る。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1004 continuation = code + env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1005 | label +env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1006 なのだが、code/label では、env の内容が異なる。できれば面白いが、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1007 その価値はあるのか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1008
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1009 しかし、code , env を分離するとあまりに危険すぎる。どうせgoto
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1010 が危険なんだからいいか? その方が簡単。簡単なら、そっちの方法を
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1011 とるべきじゃない? うーん。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1012
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1013 return の関数依存性はなくした方が良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1014 一つにするのは、pop の問題があるので良くないが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1015
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1016 そうか、ret をenvを指定して戻るようにしたから、leave する必要は
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1017 なくなった。そして、push %ebp に相当する部分は、lea -disp(%ebp),%sp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1018 で消去されている。ということは、jump のfunction依存部分はいらない
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1019 ということだね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1020
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1021 でも、汚いなぁ。read only属性をhardware supportできればなあ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1022
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1023 sched_yeilds() 相当を書けるかな? lock は?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1024
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1025 一応、できたけど、やっぱり汚い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1026
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1027 Wed Jan 12 16:12:27 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1028
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1029 あは。ANSI prototype はめんどい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1030 bexpr()
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1031 で、関数での引数の順序と、そのあとの宣言の順序が変わることがある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1032 そうすると、うしろの方が優先されてしまう。これは、こまる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1033
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1034 そうか、code_arg_offset のような方法だと、ANSI style では、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1035 困ってしまう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1036
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1037 Thu Jan 13 04:46:12 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1038
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1039 # goto name(a,b,d,e,f);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1040 code name { int g; ...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1041
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1042 %esp new %esp = old %esp - 20
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1043 %ebp-20 = g code's local variable
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1044 %ebp-12 = f <- new_disp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1045 %ebp-8 = d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1046 %ebp-4 = d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1047 %ebp-0 = c
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1048 %edi = b
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1049 %esi = a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1050 %ebp = old %esp 0 disp=0 new env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1051 local1 <----16 old local variable ( to be erased )
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1052 %edx -12 <- disp_offset
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1053 %ecx -8
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1054 %ebx -4
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1055 %ebp = %esp 0 <- old env
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1056 %eip 4 <- arg_offset
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1057
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1058
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1059 Thu Jan 13 13:38:24 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1060
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1061 だいたいできたけど、test/tmp7.c のprintf のtype mismatch は
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1062 なんなんだろう? ASNI の副作用だろうなぁ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1063
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1064 これだと、プロセスの切替えのときには、結構な量のデータを
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1065 コピーすることになる。それでもいいんだけど...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1066
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1067 それごと、どっかにとって置く。continuationへの参照みたいなもの
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1068 ができないかな。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1069
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1070 コピーができれば、environment/return の組は動くわけだから、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1071 それへの参照と切替えがあっても良いよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1072
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1073 Fri Jan 14 12:03:35 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1074
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1075 Libretto のkeyboardが壊れた... control key が効かない...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1076
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1077 printf の参照の問題は解決しました。list2 がlocalなheap
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1078 に割り当てているのがいけなかったね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1079
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1080 return の処理は、goto 文で処理するより、environment に
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1081 returnto する方が良くはないか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1082
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1083 environment は実は送り先でそれなりの準備が必要。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1084 new-environment() みたいなlibrary があれば、thread にできる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1085
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1086 join は?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1087
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1088 funcall を用意すると良いね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1089
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1090 Mon Jan 17 15:23:34 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1091
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1092 struct aa f1() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1093 return bb;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1094 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1095
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1096 みたいなのは? 関数の型か代入の型を見て、crn にpointerを渡して、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1097 あとでcopyしてから stack を畳む。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1098
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1099 # bb=f1(aaa);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1100 movl $bb,%eax
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1101 pushl %eax
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1102 movl $aaa,%eax
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1103 pushl %eax
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1104 call main2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1105 popl %edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1106 copy %eax,%edx,$400
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1107 addl $400,%esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1108 # return a1;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1109
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1110 あ、でも、それだと、local変数を返したときに困るね。leave; ret;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1111 してはいけなくて...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1112
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1113 あ、やっぱり、こういう場合はコピー先をmain2に引き渡しているみたいね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1114 void f1(struct aa *ret) {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1115 *ret = bb ;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1116 return;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1117 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1118 と同じか。これは簡単。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1119 f1().a[55]
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1120 みたいな場合は、局所変数に強制的に取ってしまうみたいね。それはそうだ...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1121 が、うちの実装だとちょっと厳しいか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1122 leal $-sizeof(struct),%esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1123 pushl %esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1124 なんだけど、関数呼び出しの途中ではできないから....
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1125
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1126 # main(ac,av)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1127 # int ac;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1128 .align 2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1129 .globl main
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1130 main:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1131 .type main,@function
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1132 pushl %ebp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1133 movl %esp,%ebp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1134 pushl %ebx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1135 pushl %ecx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1136 pushl %edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1137 # char *av[];
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1138 # {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1139 # register int i;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1140 # register char *p;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1141 # int j = 3;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1142 # struct { int b; void (*c)(struct aa); } q = {3,main1},r;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1143 #
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1144 # j = 3;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1145 subl $20,%esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1146
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1147 このsublを後から指定してやればOk。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1148
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1149 でも、それだと jump の時にずれない? ずれるか? ずれるね。うーん。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1150 実行時にチェックしてやるのも変だし。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1151
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1152 まぁ、それほど必要な機能ではないんだけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1153
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1154 これもcontinuationを渡してやると言う手法が使えないことはないんだが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1155
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1156 関数呼び出しの最初にやってやればいいか。それでできるかな?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1157
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1158
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1159 Sun Feb 20 23:59:16 JST 2000
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1160
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1161 MIPS のcall frame
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1162
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1163 $sp = $fp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1164 local variables
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1165 saved register (including $31 = return address)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1166
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1167 mask は使用したレジスタのbit pattern
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1168 -4 は何?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1169
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1170 18 .mask 0xc0000000,-4
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1171 19 .fmask 0x00000000,0
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1172 20 0000 D0FFBD27 subu $sp,$sp,48
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1173 21 0004 2C00BFAF sw $31,44($sp)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1174 22 0008 2800BEAF sw $fp,40($sp)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1175 23 000c 0000000C move $fp,$sp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1176 24 0010 21F0A003 jal __main
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1177 25 0014 03000224 li $2,0x00000003 # 3
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1178 26 0018 000082AF sw $2,a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1179 27 001c 04000224 li $2,0x00000004 # 4
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1180 28 0020 00C082AF sw $2,b
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1181 29 0024 05000224 li $2,0x00000005 # 5
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1182 30 0028 000082A3 sb $2,c
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1183 31 002c 06000224 li $2,0x00000006 # 6
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1184 32 0030 08C082A3 sb $2,d
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1185 33 $L1:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1186 34 0034 21E8C003 move $sp,$fp # sp not trusted
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1187 here
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1188 35 0038 2C00BF8F lw $31,44($sp)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1189 36 003c 2800BE8F lw $fp,40($sp)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1190 37 0040 0800E003 addu $sp,$sp,48
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1191 38 0044 3000BD27 j $31
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1192 39 .end main
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1193
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1194 これと同じようにするならば、regiterの使用数を最初に調べる必要が
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1195 あるのだけど、one path compiler である micro-C では、それは
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1196 できない。したがって、enter は後ろでする方が良い。
67
254a0c576114 argument type list
kono
parents: 66
diff changeset
1197
59
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1198 Mon Jan 20 18:25:27 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1199
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1200 3年間さわってないのかよ。何やってんだ?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1201
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1202 goto 文のバグをとらないといけない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1203
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1204 まず、関数引数の構造体の展開。これは、どうってことないはず。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1205
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1206 goto (*code)(i+1,j,...)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1207
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1208 まず、いじらなくてすむ変数を摘出する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1209
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1210 foreach arg
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1211 compare
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1212
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1213 単純演算 ( op+const , pointer , const assign ) などは、ここで検出する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1214 大半は、そのようになるはず。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1215 レジスタに乗せる分があるから... それには触らないとして...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1216
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1217 複雑なものは、前もって計算しておく。(get_register する)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1218 スタック上かレジスタ上に作る。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1219
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1220 残りは並列代入となる。再帰的に計算する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1221
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1222 えーと、大きな順にやるんだっけ? 小さな順にやるんだっけ?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1223 code f( int a, int b, int c ) {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1224 goto g(b,c,a);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1225 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1226 みたいなやつだよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1227
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1228 移動するものを一つ検出する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1229 そのために移動が必要なものを移動しておく(再帰)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1230 代入する
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1231
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1232 こんなんでいいのか? ループしない? するよね。ループしたら
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1233 get_register する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1234
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1235 前の例だと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1236
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1237 g(b,c,a) のbに着目する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1238 bに代入するコードを出すと、a が壊れる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1239 a が必要かどうかを調べる。それは、引数のリストを見ればわかる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1240 その前に、a を移動する。a の移動先を見て、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1241 空いていれば、移動してOk。しかし、c
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1242 なので、 c を見る。と b になるので、ループするのがわかるので、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1243 b を get_register する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1244 で、c が移動できる。で、aを移動して、とっておいたbを代入。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1245
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1246 Tue Jan 21 22:45:09 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1247
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1248 とりあえず、jump は複雑すぎる。もっと簡単にすることを考える。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1249 parser 側である程度処理できない?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1250
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1251 goto f(a+3,b(),c);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1252
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1253 などを、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1254
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1255 a = a+3;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1256 b = b();
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1257 goto f(a,b,c);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1258
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1259 程度に簡略化する。この時、f(a,b,c) は(できるだけ)、元の
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1260 関数の引数リストに近付ける。のは無理なので、単純変数
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1261 まで落す。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1262
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1263 あまり関係ないか。一時変数はどうせいるわけだし。ってこと
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1264 みたいね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1265
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1266 だとすると、元のコードと、そう変わらんね。前のも、そんなに
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1267 悪くないってことか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1268
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1269 Wed Jan 22 14:33:12 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1270
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1271 やっぱり、途中で局所変数を増やしたいよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1272
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1273 Fri Jan 31 20:30:36 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1274
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1275 なんか #ifdef / #if がないとだめだな。実装する?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1276 しました。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1277
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1278 Tue Feb 4 01:04:12 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1279
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1280 ## while ((*chptr++ = c = getc(filep->fcb)) != '\n') {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1281 _1120:
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1282 movl $10,%eax
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1283 movl $8,%ecx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1284 movl filep,%edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1285 addl %ecx,%edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1286 movl (%edx),%edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1287 pushl %edx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1288 xchg %edx,%eax .... edx に$10が入る (なんでxchg?)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1289 call getc
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1290 addl $4,%esp
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1291 movl %eax,-20(%ebp) c に代入
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1292 movl $chptr,%ecx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1293 pushl %ecx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1294 popl %ebx
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1295 movl (%ebx),%ecx ecx にchptrの中身
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1296 addl $1,(%ebx)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1297 movb %al,(%ecx)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1298 subl %edx,%eax eax-edx ($10)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1299 je _1119
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1300
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1301 が壊れる理由なんだけど...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1302
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1303 edx,ecx が破壊されちゃうみたいね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1304
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1305 Tue Feb 4 12:17:07 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1306
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1307 ようやっと直したよ...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1308
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1309 use_pointer って、なにもしなくていいんだよね? eax,ebx を避ける
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1310 ってことらしいけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1311
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1312 inline/引数付き #define 欲しくない? 置き換えは、local name stack に積んじゃう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1313 展開は function で行う。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1314
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1315 getch を工夫する必要はあるが。置き換えスタックが必要。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1316
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1317
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1318 Wed Feb 5 01:16:00 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1319
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1320 大域で定義された struct field が大域変数と重なっていると落ちる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1321 そりゃそうだけど。どうするの? (直した記憶があるんだけどなぁ...)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1322 struct 毎に field 名とoffset/type の組を持てばい良いんだよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1323
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1324 なんだけど、タグ無しの構造体もあるから、型名の方に付ける必要
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1325 もある。というのは、型名のない構造体もあるから。タグ名には、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1326 一応、リストがついている。なんかに使う必要があったんでしょう
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1327 ね。あ、めんどう。無条件にやっても大域変数名を汚すのを直すの
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1328 が難しい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1329
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1330 ちょっと、あれだけど、「型名.フィールド名」で登録してしまうのはどう?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1331 型名が後で出て来るところが気まずいが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1332
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1333 def で登録するときに、nptrにdispを代入せずに、struct field list
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1334 (大域変数) に入れて、type の方に、field list (list3(nptr,offset,
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1335 type)) を入れれば良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1336
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1337 あとは、strop の方でtypeのlistを見るようにすれば良いわけだ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1338
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1339 これなら、簡単に直せるはず。LUSTR/GUSTRなどの区別もなくなるし。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1340
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1341 Wed Feb 5 02:10:14 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1342
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1343 浮動小数点ねぇ。完全なANSI Cにするのは大変。でも、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1344 浮動小数点ぐらいないと。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1345
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1346 code generation part を、さらに分割して、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1347 複数のコード対応にしやすいようにする。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1348 おそらく、それほど共有する部分はないけどね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1349
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1350 Sample C code をコンパイルして、その結果から(半分手動で)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1351 Micro CbC code generation part を生成する方法を用意する。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1352
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1353
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1354
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1355 Thu Feb 6 11:47:03 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1356
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1357 Code Segement を単位として使うときに、大域変数はどういう
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1358 ように分けるの? static なんかは意味ないよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1359
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1360 もちろん、自然にグループ分けされるわけだけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1361
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1362 あとデータフローだよね。データフローに関しては、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1363 あんまりやってないなぁ
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1364
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1365 Fri Feb 7 14:36:15 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1366
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1367 inline では、必らず、局所変数の増加がある。また、inline
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1368 は普通の関数として展開しておく必要もあるらしい。(何故?)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1369
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1370 #define ねぇ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1371
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1372 #define c(a,b) g(a+1,b+1)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1373 #define g(a,b) printf("%d %d\n",a+1,b+1);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1374
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1375 main() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1376 int a,b;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1377 a =1; b = 3;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1378 c(a,b);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1379 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1380
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1381 local #define がいるんだよね。g の中で a が出て来た時には、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1382 c のa の置き換えは起こってはいけない。ということは、c
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1383 の置き換えはg が始まる前に終っている必要がある。dynamic
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1384 scope なんだから、assoc の上乗せで良いはず。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1385 macro のlevelを定義して、あるレベルでは、それ以前の展開
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1386 を行わないという手法が良いかな。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1387
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1388 c(a,b) => a=>"a+1", b=>"b+1"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1389 g(a,b) => (a=>"a+1+1",a=>"a+1"), (b=>"b+1+1",a=>"a+1")
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1390
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1391 みたいな感じ?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1392
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1393 やっぱり関数解析でマクロ処理をやらせるのは無理かな? 先読みされちゃうし。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1394
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1395 Sat Feb 8 00:53:52 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1396
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1397 macro は途中まで書きました。置き換えをマクロが呼び出された
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1398 時点で cheap に置くと、それを解消するタイミングがない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1399 ここだけmallocしても良いが..
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1400
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1401 chptrsave はlistにする必要がある。list で良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1402
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1403 やっぱりmacro levelを見て、自分と一致したassoc valueまで
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1404 手繰って置換するんでしょう。そうすれば、置き換える必要は無い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1405 ということは、local_define にmflagsを格納する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1406
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1407 c(a,b) => a=>"a", b=>"b"
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1408 a=>"a" .. mflag == 1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1409 g(a,b) => (a=>"a+1+1",a=>"a+1"), (b=>"b+1+1",a=>"a+1")
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1410 a=>"a+1" .. mflag == 2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1411
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1412 macro のもとのnptr が残ってないと、オリジナルを返せない。オ
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1413 リジナルは、sc などが破壊されてしまう。ってことは、local macro
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1414 は、local table を汚してはいけないってことだよね。ってことは、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1415 macro table は、もとのとは別に用意する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1416
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1417 #define c(a,b) g(a+1,b+1)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1418 #define g(a,b) printf("%d %d\n",a+2,b+2);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1419
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1420 main() {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1421 int a,b; a ... local
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1422 a =1; b = 3;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1423 #ifndef a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1424 c(a, a = "a".. macro mflag==1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1425 g(a,
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1426 a="a+1" mflag==2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1427 ^ a = "a" mflag==1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1428 While replacing a in g's body, a should not
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1429 be replaced to (original) "a", should be c's a.
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1430 b);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1431 /* 3,5 expected */
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1432 #endif
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1433 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1434
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1435 うーむ。ややこしい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1436
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1437 main()
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1438 c(a,b) mflag++
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1439 a=>"a" mflag ==1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1440 g(a,b) mflag++;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1441 a=>"a+1" mflag ==2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1442 ^ is replaced by c's "a" not g's a;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1443 いったん mflag level n で展開したら、それは mflag level n-1 となる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1444
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1445 Sat Feb 8 18:13:43 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1446
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1447 いちおう、mflag まではデバッグしたが.... mflag を戻してないんじゃないの?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1448
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1449 ---c(a,b)----------------------- mflag ==1
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1450 a=>hoge, b=>hoga (mflag==1)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1451 ----g(ac,bc)----------------- mflag ==2
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1452 ac=>goge, bc=>goga(mflag==2)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1453 ----printf(a,b)---------- mflag ==3
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1454 a=>poge, b=>poga(mflag==3)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1455
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1456 g が呼び出されると、ac,bc は mflag==1 でのみ置換される。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1457
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1458 あるテキストを置き換えると、それは置き換えたマクロのmflag level
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1459 (つまり一つ少ないレベル)になる。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1460 置き換え終ったら、元のlevelに戻す。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1461
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1462 mflag==2のlevel では、mflag==2のlocal macroの展開しかしない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1463
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1464 置き換えると、mflag level 1 になるので、そこで mflag==1 のlocal
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1465 macro を展開する。mflag==0 は常に展開を行う。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1466
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1467 Sun Feb 9 11:35:23 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1468
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1469 うーん、なんかtypeが、list とCHARなどと入混じっているじゃん。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1470 int save = chptrsave;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1471 で、chptrsave が、$chptrsave になってしまう。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1472
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1473 Sun Feb 9 22:33:36 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1474
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1475
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1476 #define car(e) (heap[(int)(e)])
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1477 #define cadr(e) (heap[((int)(e))+1])
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1478 car(cadr(e))
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1479
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1480 だろ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1481 car ->
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1482 #define e cadr(e) (mleve=1)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1483 cadr ->
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1484 #define e e (mleve=2)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1485
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1486 むぅ。これ、うまくいかないんじゃん。こまったなぁ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1487
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1488 #define c(a,b) g(a+1,b+1)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1489 #define g(a,b) printf("%d %d\n",a+1,b+1);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1490 c(a, b);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1491
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1492 こっちもだめじゃん。ふーむ。lisp interpreter のように
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1493 作ればいいはずなんだけど。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1494
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1495 Mon Feb 10 08:10:25 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1496
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1497 結局、list base のinterpreter を実装しました。きちゃないが。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1498 前の方法でも、頑張ればできるんでしょうけどね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1499
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1500 Tue Feb 11 13:50:03 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1501
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1502 struct copy だけど... 関数がstructを返すときに、引数に前もって
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1503 積んでおくのでは、そこに値がコピーされてしまうし、あとで、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1504 スタックをたたんで置くときにきまずい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1505
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1506 function call の時に、引数の型のチェックをしてない
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1507
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1508 type に -1 とheapの引数が混在しているやつだけど..
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1509 やっぱまずいんじゃないか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1510
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1511 temproal struct は再利用できるんだけど、dispの変更ができないので
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1512 新しく作るしかない。大きいときだけ新しく作るなんていうセコイ
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1513 技はあるけど。(そうすると、帰って来た値へのポインタを使えなく
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1514 なるが.... 別にいいよね。戻り値それ自身を直接 return する
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1515 時もだいじょうぶなはず)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1516
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1517 結局、呼出側で、領域を確保して引き渡すことにしました。この方法だと、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1518 代入のときに二度コピーする必要もない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1519
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1520 register を使用しているかだけじゃなくて、実際にcreg/dregに
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1521 値があるかどうかを記憶する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1522
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1523 Wed Feb 12 11:09:22 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1524
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1525 それだけどさ... やっぱりアドホックに実現するのは難しいんじゃないの?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1526
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1527 まぁねぇ。register の場所の確保と、寿命は別だから、それで
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1528 いいんだけど、regs flag だけでなんとかならないのかな。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1529 こういう変更ははまるが虚しい。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1530
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1531 Thu Feb 13 18:37:36 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1532
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1533 さて、そろそろ jump にとりかかりますか。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1534
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1535 構造体の引き渡しのシークエンスに使う局所変数の位置がgccと違う...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1536
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1537 そろそろ register は構造体にすべきだね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1538 struct register {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1539 int used;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1540 int valued;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1541 char *name;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1542 char *wname;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1543 char *bname;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1544 int type; /* register variable or not */
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1545 int number;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1546 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1547 virtual/real は、どうする。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1548
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1549 Sat Feb 15 14:00:03 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1550
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1551 fdecl_struct を構文的に引数が出現するときに行うと、int *f(int
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1552 a) などで、* の評価が終る前に、int aが評価されしまう。*obj
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1553 のobj を評価し終らないとfのタイプが確定しない。int*f()[] み
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1554 たいな場合があるから。(?) なので、gcc と、そろえるためには、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1555 arg の先頭で fdecl_struct を行う方法ではだめで、fdecl 中であ
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1556 とから修正する方が良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1557
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1558 fix しようにも引数リストなんて、存在しないじゃん!
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1559
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1560 varargs を実装するのはめんどくさかろう...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1561
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1562 rvalue(expr(),type) では、expr() のtypeをrvalueに引き渡せな
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1563 い。でも、type を大域変数にすると、rvalueを異なるタイプで呼
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1564 び出すときにtypeを変更する必要がある。このrvalueのtype の扱
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1565 いは、かなりはまったことがあるので、rvalue(int e,int type)の
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1566 方が良いことは確かなんだが...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1567
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1568 struct_push のregisterの扱いが複雑すぎ。なんか、もっと
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1569 簡単にならないの?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1570
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1571 Sun Feb 16 07:58:23 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1572
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1573 代入しなくて良いからと言って、ソース
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1574 のリストから除いては、上書きを防げない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1575
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1576 Sun Feb 16 22:55:58 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1577
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1578 vdisp ってなんだったんだ?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1579
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1580 Mon Feb 17 12:35:39 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1581
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1582 並列代入は出来たみたい。代入は小さいものを先にすべきなのか?
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1583 まぁ、できりゃいいんだけど、横に避けるものが大きいのはいや
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1584 だよね。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1585
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1586 Tue Feb 18 11:56:10 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1587
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1588 overraped 用の emit_copy
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1589 float/double
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1590 long long
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1591
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1592 Tue Feb 18 19:34:31 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1593
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1594 code argument の符号を反転させると、list2(LVAR,offset)
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1595 のoffsetがアドレスの方向と一致しているという前提が
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1596 崩れる。それで、構造体の格納順序がずれてしまう...
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1597
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1598 ということは... def(n) でcodeの時はargumentは、局所変数と同じ
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1599 扱いでマイナス符号で処理した方が良い。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1600
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1601 できたみたい。でもさ、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1602
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1603 int main( int ac, char *av[])
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1604 {
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1605 int n;
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1606 goto arg1(0,1,2,3,4,return,environment);
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1607 }
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1608
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1609 って、きっと return 文がないと、文句を
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1610 言われるよね。むむむ。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1611
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1612 post processing する時にoverrapしてないという保証がない。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1613
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1614 Wed Feb 19 15:38:55 JST 2003
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1615
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1616 自分自身とのoverrrapを見てないので、
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1617 struct a a,int i
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1618 int i,struct a a
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1619 みたいな時に自分自身を壊してしまう。なので、emit_copy
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1620 が、ちゃんと方向を見て壊さないように処理する必要がある。
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1621
eeca07d1b1c2 *** empty log message ***
kono
parents:
diff changeset
1622 call bcop でいいじゃん。まね。
64
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1623
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1624 Wed Feb 19 20:42:07 JST 2003
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1625
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1626 楊さんの C2CbC と CbC2C を、micro C に取り込む。各所に、
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1627 conv->func(); を埋め込む。conv は、構造体。
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1628
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1629 conv: original
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1630 c2cbc
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1631 cbc2c
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1632
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1633 とする。なるほど。
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1634
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1635 Thu Feb 20 05:34:58 JST 2003
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1636
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1637 むぅ。code-ia32 で結構はまった。あと、stack のアライメントが
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1638 ずれるみたい。6809では問題にならなかったんだけどね。
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1639 leave で調整するべき。
262c8059e5df *** empty log message ***
kono
parents: 59
diff changeset
1640
66
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1641
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1642 Thu Feb 20 14:42:46 JST 2003
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1643
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1644 c2cbc,cbc2c なんだけど、いったん、構文木にしてから変換すると、
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1645 結構失われる情報があるけど、いいの? 特に局所変数の名前とか型
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1646 の情報とか。macro もそうだけど。 indent ぐらい保存できないか
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1647 なぁ。式の途中でfunction callする場合も取り扱う必要があるの
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1648 で、構文木にしてから計算するしかないかな。gexpr の代わりに生
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1649 成するようにするか。そうすると、修正するのは、statement と、
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1650 gexpr になる。でも、結局、構文木で型を持ち歩くしかないんじゃ
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1651 ないの? やっぱり変だよ。型の情報がないのは。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1652
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1653 そうではなくて、exprN() で変換していく方法もある。この方が
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1654 情報が欠落しないので楽だろう。そうすると、修正するのは、
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1655 exprN(),doXXXX()
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1656 となる。これは、量は多い。けど、まぁ、それだけ。この方が
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1657 オリジナルを保存しやすい。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1658
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1659 中間変数を途中で追加すると、宣言部を前もって出力できなく
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1660 なる。{int a;...} を認めれば良いわけだど。実装は難しくない。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1661 じゃ、やれば? でも、汚くなるなあ。出力をいったんバッファ
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1662 に貯めれば? どこに? cheapp ですか? 中間変数はいらないん
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1663 じゃないの?
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1664 a = g(i)+a;
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1665 でしょ。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1666 goto g_1(i,f_1,save_a); }
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1667 code g_1(i,f_1,save_a) { .... goto f_1(ret_value,save_a); }
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1668 code f_1(ret_value,save_a) { a = ret_value+a; ...}
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1669 じゃん。いらないじゃん。。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1670
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1671
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1672 型を表示するルーチンが必要だね。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1673
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1674 めんどくさいなぁ。CbCのProlog version とかほしいなぁ。そうすれば、
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1675 変換は簡単。でも、やろうとしてできなかったことでもあるな。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1676
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1677
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1678 Thu Feb 20 21:13:23 JST 2003
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1679
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1680 MC6809 の mc-codegen.c version は? (ちょっと虚しすぎる?)
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1681 X と D で、use_data_register, use_pointer してやる。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1682 tosop で、X と D の間の足し算を特別扱いする。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1683 (なるほど...) MAX_MAX=0でうまく動くのか? やっぱり、1は
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1684 いるよね。できれば、2だよね。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1685
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1686 結構、浮動小数点も簡単かも。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1687
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1688 汎用の書き換えツールも便利そう。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1689
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1690 でも、Prolog version ってのも面白そう。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1691 code(name,interface(....)) :-
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1692 p()....,goto(name,interface(....)).
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1693 みたいな感じ? 結構、簡単にinterpreterを書けるかも知れない。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1694 これは、あれだね。thread diagram interpreter と似ている。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1695
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1696 Fri Feb 21 13:34:17 JST 2003
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1697
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1698 構文要素での書き換えだけど、どれくらいの能力があるの?
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1699 その場での書き換えだけだと、ちょっと低すぎない? それで、
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1700 cbc2c,c2cbc はできるとは思う。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1701
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1702 まぁいいけど.. chk を無視しているところが結構あるんですけど。
0b068058dd67 *** empty log message ***
kono
parents: 64
diff changeset
1703 jmp,enter,leave ...
67
254a0c576114 argument type list
kono
parents: 66
diff changeset
1704
254a0c576114 argument type list
kono
parents: 66
diff changeset
1705 Sat Feb 22 13:05:04 JST 2003
254a0c576114 argument type list
kono
parents: 66
diff changeset
1706
254a0c576114 argument type list
kono
parents: 66
diff changeset
1707 type の印刷かぁ...
254a0c576114 argument type list
kono
parents: 66
diff changeset
1708
254a0c576114 argument type list
kono
parents: 66
diff changeset
1709 conv 系は大半はdefault convが呼ばれる。なので、c.c
254a0c576114 argument type list
kono
parents: 66
diff changeset
1710 っていうよりは、default.cだよね。必要なところだけ、
254a0c576114 argument type list
kono
parents: 66
diff changeset
1711 自分で代入すると言う方法が良いだろう。その方が
254a0c576114 argument type list
kono
parents: 66
diff changeset
1712 ヘッダも一つで済むし。もちろん、object 指向なら
254a0c576114 argument type list
kono
parents: 66
diff changeset
1713 簡単なんだが...
254a0c576114 argument type list
kono
parents: 66
diff changeset
1714
254a0c576114 argument type list
kono
parents: 66
diff changeset
1715
254a0c576114 argument type list
kono
parents: 66
diff changeset
1716 Sun Feb 23 19:47:41 JST 2003
254a0c576114 argument type list
kono
parents: 66
diff changeset
1717
254a0c576114 argument type list
kono
parents: 66
diff changeset
1718 struct のtypeを印刷するんだけど、一回印刷したら、あとは印刷
254a0c576114 argument type list
kono
parents: 66
diff changeset
1719 しない方が良い。逆に毎回書くなら、tag名type名は、いらないの
254a0c576114 argument type list
kono
parents: 66
diff changeset
1720 か。
254a0c576114 argument type list
kono
parents: 66
diff changeset
1721
254a0c576114 argument type list
kono
parents: 66
diff changeset
1722 とするとtypeの解釈はやめてndeclで処理する? 印刷では、それで
254a0c576114 argument type list
kono
parents: 66
diff changeset
1723 いいわけだけど。
254a0c576114 argument type list
kono
parents: 66
diff changeset
1724
254a0c576114 argument type list
kono
parents: 66
diff changeset
1725 このタイプの印刷だと再帰型は印刷が終了しないんじゃないか?
254a0c576114 argument type list
kono
parents: 66
diff changeset
1726 しないね。
69
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1727
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1728 Mon Feb 24 02:31:06 JST 2003
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1729
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1730 strings の\nなどを元に戻す必要がある。
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1731
dba8d111b7a0 c output
kono
parents: 67
diff changeset
1732 なんか括弧がわやになってるな。
70
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1733
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1734 Mon Feb 24 11:02:07 JST 2003
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1735
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1736 typedef されたタイプは、そちらを使う方が良い。
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1737 けど、情報が失われてしまっているので、
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1738 どこかにとっておかないとだめだね。dsp ?
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1739
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1740 うーむ、これはなかなか難しい。全サーチ
2e84590720a6 typedef name
kono
parents: 69
diff changeset
1741 してもいいんじゃないかな。遅いけど。