forked from KolibriOS/kolibrios
36 lines
617 B
ArmAsm
36 lines
617 B
ArmAsm
|
/* ---------------------------------------------- */
|
||
|
|
/* alloca86.S */
|
||
|
|
|
||
|
|
.globl alloca
|
||
|
|
|
||
|
|
alloca:
|
||
|
|
pop %edx
|
||
|
|
pop %eax
|
||
|
|
add $3,%eax
|
||
|
|
and $-4,%eax
|
||
|
|
jz p3
|
||
|
|
|
||
|
|
#ifdef TCC_TARGET_PE
|
||
|
|
p1:
|
||
|
|
cmp $4096,%eax
|
||
|
|
jbe p2
|
||
|
|
test %eax,-4096(%esp)
|
||
|
|
sub $4096,%esp
|
||
|
|
sub $4096,%eax
|
||
|
|
jmp p1
|
||
|
|
p2:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
sub %eax,%esp
|
||
|
|
mov %esp,%eax
|
||
|
|
p3:
|
||
|
|
push %edx
|
||
|
|
push %edx
|
||
|
|
ret
|
||
|
|
|
||
|
|
/* mark stack as nonexecutable */
|
||
|
|
#if defined __ELF__ && defined __linux__
|
||
|
|
.section .note.GNU-stack,"",@progbits
|
||
|
|
#endif
|
||
|
|
/* ---------------------------------------------- */
|