Mercurial > pub > dyncall > dyncall
annotate dyncall/dyncall_call_mips_o32.S @ 321:72b450cc3be8
- cosmetics/cleanup
author | Tassilo Philipp |
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date | Sat, 16 Nov 2019 00:14:47 +0100 |
parents | d55f9d508074 |
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rev | line source |
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0 | 1 /* |
2 | |
3 Package: dyncall | |
4 Library: dyncall | |
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5 File: dyncall/dyncall_call_mips_o32.S |
0 | 6 Description: mips "o32" abi call kernel implementation in GNU Assembler |
7 License: | |
8 | |
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9 Copyright (c) 2007-2018 Daniel Adler <dadler@uni-goettingen.de>, |
0 | 10 Tassilo Philipp <tphilipp@potion-studios.com> |
11 | |
12 Permission to use, copy, modify, and distribute this software for any | |
13 purpose with or without fee is hereby granted, provided that the above | |
14 copyright notice and this permission notice appear in all copies. | |
15 | |
16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
23 | |
24 */ | |
25 /* $4 target function */ | |
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26 /* $5 register data */ |
321 | 27 /* $6 stack size (guaranteed to be >= 16b and multiple of 8b) */ |
0 | 28 /* $7 stack data */ |
29 | |
30 | |
31 | |
32 .section .mdebug.abi32 | |
33 .previous | |
34 .abicalls | |
35 .text | |
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36 .align 2 |
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37 .globl dcCall_mips_o32 |
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38 .ent dcCall_mips_o32 |
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39 .type dcCall_mips_o32, @function |
0 | 40 dcCall_mips_o32: |
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41 .frame $fp,40,$31 /* vars=8, regs=2/0, args=16, gp=8 */ |
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42 .mask 0xc0000000,-4 |
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43 .fmask 0x00000000,0 |
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44 .set noreorder |
0 | 45 |
321 | 46 addiu $sp, $sp, -8 |
47 sw $31, 4($sp) /* save link register */ | |
48 sw $fp, 0($sp) /* save frame pointer */ | |
0 | 49 nop |
321 | 50 move $fp, $sp /* frame pointer = sp */ |
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51 sub $sp, $sp, $6 /* increment stack */ |
0 | 52 |
53 /* copy stack data */ | |
54 | |
55 /* $12 source pointer (parameter stack data) */ | |
56 /* $14 destination (stack pointer) */ | |
57 /* $6 byte count */ | |
58 | |
321 | 59 move $12, $7 |
60 move $14, $sp | |
0 | 61 |
62 .next: | |
321 | 63 beq $6, $0, .skip |
0 | 64 nop |
321 | 65 lw $2, 0($12) |
0 | 66 nop |
321 | 67 sw $2, 0($14) |
68 addiu $12, $12, 4 | |
69 addiu $14, $14, 4 | |
70 addiu $6, $6, -4 | |
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71 j .next |
0 | 72 nop |
73 .skip: | |
74 | |
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75 #if defined(DC__ABI_HARDFLOAT) |
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76 /* load two double-precision floating-point argument registers ($f12, $f14) - not for softfloat */ |
0 | 77 |
78 l.d $f12, 0($5) | |
79 l.d $f14, 8($5) | |
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80 #endif |
101 | 81 |
0 | 82 /* prepare call */ |
83 | |
321 | 84 move $12, $7 /* $12 stack data */ |
85 move $25, $4 /* $25 target function */ | |
0 | 86 |
87 /* load first four integer arguments ($4-$7) */ | |
88 | |
321 | 89 lw $4, 0($12) |
90 lw $5, 4($12) | |
91 lw $6, 8($12) | |
92 lw $7, 12($12) | |
0 | 93 |
94 /* call target function */ | |
95 | |
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96 jalr $25 |
0 | 97 nop |
321 | 98 move $sp, $fp /* restore stack pointer */ |
0 | 99 nop |
321 | 100 lw $31, 4($sp) /* restore return address */ |
101 lw $fp, 0($sp) /* restore frame pointer */ | |
102 addiu $sp, $sp, 8 /* end stack frame */ | |
103 j $31 /* return */ | |
0 | 104 nop |
105 | |
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106 .set reorder |
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107 .end dcCall_mips_o32 |
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108 .ident "handwritten" |
0 | 109 |