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/* ---------------------------------------------- */
/* chkstk86.s */
#ifdef __leading_underscore
# define _(s) _##s
#else
# define _(s) s
#endif
/* ---------------------------------------------- */
#ifndef __x86_64__
/* ---------------------------------------------- */
.globl _(__chkstk)
_(__chkstk):
xchg (%esp),%ebp /* store ebp, get ret.addr */
push %ebp /* push ret.addr */
lea 4(%esp),%ebp /* setup frame ptr */
push %ecx /* save ecx */
mov %ebp,%ecx
P0:
sub $4096,%ecx
test %eax,(%ecx)
sub $4096,%eax
cmp $4096,%eax
jge P0
sub %eax,%ecx
test %eax,(%ecx)
mov %esp,%eax
mov %ecx,%esp
mov (%eax),%ecx /* restore ecx */
jmp *4(%eax)
/* ---------------------------------------------- */
#else
/* ---------------------------------------------- */
.globl _(__chkstk)
_(__chkstk):
xchg (%rsp),%rbp /* store ebp, get ret.addr */
push %rbp /* push ret.addr */
lea 8(%rsp),%rbp /* setup frame ptr */
push %rcx /* save ecx */
mov %rbp,%rcx
movslq %eax,%rax
P0:
sub $4096,%rcx
test %rax,(%rcx)
sub $4096,%rax
cmp $4096,%rax
jge P0
sub %rax,%rcx
test %rax,(%rcx)
mov %rsp,%rax
mov %rcx,%rsp
mov (%rax),%rcx /* restore ecx */
jmp *8(%rax)
/* ---------------------------------------------- */
/* setjmp/longjmp support */
.globl _(tinyc_getbp)
_(tinyc_getbp):
mov %rbp,%rax
ret
/* ---------------------------------------------- */
#endif
/* ---------------------------------------------- */
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