source: EcnlProtoTool/trunk/tcc-0.9.26/lib/alloca86.S@ 279

Last change on this file since 279 was 279, checked in by coas-nagasima, 7 years ago

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File size: 612 bytes
Line 
1/* ---------------------------------------------- */
2/* alloca86.S */
3
4.globl alloca
5
6alloca:
7 pop %edx
8 pop %eax
9 add $3,%eax
10 and $-4,%eax
11 jz p3
12
13#ifdef TCC_TARGET_PE
14p1:
15 cmp $4096,%eax
16 jle p2
17 sub $4096,%esp
18 sub $4096,%eax
19 test %eax,(%esp)
20 jmp p1
21p2:
22#endif
23
24 sub %eax,%esp
25 mov %esp,%eax
26p3:
27 push %edx
28 push %edx
29 ret
30
31/* mark stack as nonexecutable */
32#if defined __ELF__ && defined __linux__
33 .section .note.GNU-stack,"",@progbits
34#endif
35/* ---------------------------------------------- */
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