tinycc/lib/alloca86-bt.S
Sergei Trofimovich d97a25fbdd lib/alloca*: mark ELF stack access flags as nonexecutable
Signed-off-by: Sergei Trofimovich <st@anti-virus.by>
2011-01-04 10:38:52 +02:00

48 lines
809 B
ArmAsm

/* ---------------------------------------------- */
/* alloca86-bt.S */
.globl __bound_alloca
__bound_alloca:
pop %edx
pop %eax
mov %eax, %ecx
add $3,%eax
and $-4,%eax
jz p6
#ifdef TCC_TARGET_PE
p4:
cmp $4096,%eax
jle p5
sub $4096,%esp
sub $4096,%eax
test %eax,(%esp)
jmp p4
p5:
#endif
sub %eax,%esp
mov %esp,%eax
push %edx
push %eax
push %ecx
push %eax
call __bound_new_region
add $8, %esp
pop %eax
pop %edx
p6:
push %edx
push %edx
ret
/* mark stack as nonexecutable */
#if defined __ELF__ && defined __linux__
.section .note.GNU-stack,"",@progbits
#endif
/* ---------------------------------------------- */