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/* ---------------------------------------------- */
/* alloca86_64.S */
.globl alloca
alloca:
pop %rdx
#ifdef TCC_TARGET_PE
mov %rcx,%rax
#else
mov %rdi,%rax
#endif
add $15,%rax
and $-16,%rax
jz p3
#ifdef TCC_TARGET_PE
p1:
cmp $4096,%rax
jbe p2
test %rax,-4096(%rsp)
sub $4096,%rsp
sub $4096,%rax
jmp p1
p2:
#endif
sub %rax,%rsp
mov %rsp,%rax
#ifdef TCC_TARGET_PE
add $32,%rax
#endif
p3:
push %rdx
ret
/* ---------------------------------------------- */
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