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annotate level2/modules/kernel/fgmoddr.asm @ 3198:734862561313

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3rdparty/packages: Rename particularly cryptic folder names
author Tormod Volden <debian.tormod@gmail.com>
date Sat, 03 Jun 2017 10:34:39 +0200
parents 039ddb7c8ad7
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1345
1da8ab9ba433 Added consistent comments to each system call
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1 **************************************************
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2 * System Call: F$GModDr
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3 *
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4 * Function: Get copy of module directory
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5 *
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6 * Input: X = 2048 byte buffer pointer
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7 *
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8 * Output: None
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9 *
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10 * Error: CC = C bit set; B = error code
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11 *
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ca83286ded5b Start of new OS-9 L2 Kernel
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12 FGModDr ldd <D.ModDir+2 Get end ptr of module directory
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13 subd <D.ModDir Calculate maximum size of module directory
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14 tfr d,y Put max. size in Y
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15 ldd <D.ModEnd Get real end ptr of module dir
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16 subd <D.ModDir Calculate real size of module dir
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17 ldx R$X,u Get requested buffer ptr to put it from caller
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18 IFNE H6309
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19 addr d,x Calculate end addr. of directory after its copied
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20 ELSE
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21 leax d,x
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22 ENDC
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23 stx R$Y,u Preserve in caller's Y register
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24 ldx <D.ModDir Get start ptr of module directory
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25 stx R$U,u Preserve in caller's U register
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26
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27 lda <D.SysTsk Get system task #
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28 ldx <D.Proc Get current process task #
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29 ldb P$Task,x
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30 ldx <D.ModDir Get start ptr of module directory
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31 bra L0978 --- saves 4 bytes, adds 3 cycles
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32 *** ldu R$X,u Get caller's buffer ptr
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33 *** os9 F$Move Copy module directory in caller's buffer
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039ddb7c8ad7 l2 kernel: Remove tabs and trailing whitespace, align comments
Neal Crook <foofoobedoo@gmail.com>
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34 *** rts