# HG changeset patch
# User kono
# Date 1161936590 -32400
# Node ID 1ee4fa9364c7260185fc275677ec0be77ea6a364
# Parent  6bf66c125dbc10c86f65d76aba339cfd213f0e6e
*** empty log message ***

diff -r 6bf66c125dbc -r 1ee4fa9364c7 s-code-ppc.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/s-code-ppc.c	Fri Oct 27 17:09:50 2006 +0900
@@ -0,0 +1,190 @@
+/*
+    Very Simple Code Generator for Mac OS X (PPC)
+	$Id$
+ */
+
+#include "s-compile.h"
+
+int  label = 0;
+char *comments = "#####";
+
+static
+char *intro[] = {
+"	.section __TEXT,__text,regular,pure_instructions",
+"	.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32",
+"	.machine ppc",
+"	.text",
+"	.align 2",
+"	.globl _main",
+"	_main:",
+"	mflr r0",
+"	bcl 20,31,"L00000000001$pb"",
+"	"L00000000001$pb":",
+"	mflr r10",
+"	mtlr r0",
+    NULL
+};
+
+static
+char *ending[] = {
+"	.cstring",
+"	.align 2",
+"	LC0:",
+"	.ascii "= %d\12\0"",
+"	.text",
+"	.align 2",
+"	.globl _print",
+"	_print:",
+"	mflr r0",
+"	stw r31,-4(r1)",
+"	stw r0,8(r1)",
+"	stwu r1,-80(r1)",
+"	bcl 20,31,"L00000000002$pb"",
+"	"L00000000002$pb":",
+"	mflr r31",
+"	mr r4,r3",
+"	addis r3,r31,ha16(LC0-"L00000000002$pb")",
+"	la r3,lo16(LC0-"L00000000002$pb")(r3)",
+"	bl L_printf$stub",
+"	addi r1,r1,80",
+"	lwz r0,8(r1)",
+"	mtlr r0",
+"	lwz r31,-4(r1)",
+"	mtlr r0",
+"	lwz r31,-4(r1)",
+"	blr",
+"	.section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32",
+"	.align 5",
+"	L_printf$stub:",
+"	.indirect_symbol _printf",
+"	mflr r0",
+"	bcl 20,31,"L00000000001$spb"",
+"	"L00000000001$spb":",
+"	mflr r11",
+"	addis r11,r11,ha16(L_printf$lazy_ptr-"L00000000001$spb")",
+"	mtlr r0",
+"	lwzu r12,lo16(L_printf$lazy_ptr-"L00000000001$spb")(r11)",
+"	mtctr r12",
+"	bctr",
+"	.lazy_symbol_pointer",
+"	L_printf$lazy_ptr:",
+"	.indirect_symbol _printf",
+"	.long   dyld_stub_binding_helper",
+"	.subsections_via_symbols",
+    "\t.align 2\n",
+    ".comm _variable,192\n",
+    NULL
+};
+
+void
+emit_push()
+{
+    printf("\tstwu r3,-4(r1)\n");
+}
+
+void
+emit_compare() 
+{
+    printf("\tlwz r4,(r1)\n");
+    printf("\taddis r1,r1,4\n");
+            cmpw cr7,r3,r4
+		        mfcr r3
+			        rlwinm r3,r3,30,1
+
+}
+
+void
+emit_store(assign)
+int assign;
+{
+            slwi r3,r3,2
+		        addis r2,r10,ha16(L_variable$non_lazy_ptr-"L00000000002$pb")
+			        lwz r2,lo16(L_variable$non_lazy_ptr-"L00000000002$pb")(r2)
+				        stwx r4,r3,r2
+
+}
+
+static
+char *opcode[] = {
+    "",
+    "sub",
+    "add",
+    "mul",
+    "div",
+    "",
+    "",
+    "",
+    "",
+    "sub",
+    "div",
+};
+
+void
+emit_calc(enum opcode op)
+{
+    printf("\tlwz r4,(r1)\n");
+    printf("\taddis r1,r1,4\n");
+    if(op==O_DIV) {
+	printf("\tdiv r4,r3,r3\n");
+    } else if(op==O_SUB) {
+	printf("\tsub r4,r3,r3\n");
+    } else {
+	printf("\t%s r4,r3,r3\n",opcode[op]);
+    }
+}
+
+void
+emit_value(d) 
+int d;
+{
+    printf("\tmovl $%d,%%eax\n",d);
+}
+
+void
+emit_load(d)
+int d;
+{
+    printf("\tmovl _variable+%d,%%eax\n",d*4);
+}
+
+void
+emit_comment()
+{
+    if (before < ptr) {
+	putchar('#'); putchar('#'); putchar(' ');
+	while (before < ptr) {
+	    if(*before && *before!='\n') {
+		putchar(*before);
+	    }
+	    before++;
+	}
+	putchar('\n');
+    }
+}
+
+void
+emit_print()
+{
+    printf("\tbl _print\n");
+}
+
+
+void
+emit_intro()
+{
+    char **iptr;
+    for(iptr=intro;*iptr;iptr++) {
+        printf("%s",*iptr);
+    }
+}
+
+void
+emit_ending()
+{
+    char **iptr;
+    for(iptr=ending;*iptr;iptr++) {
+        printf("%s",*iptr);
+    }
+}
+
+/* end */