diff options
Diffstat (limited to 'alloca86.S')
| -rw-r--r-- | alloca86.S | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/alloca86.S b/alloca86.S new file mode 100644 index 0000000..c8f0c25 --- /dev/null +++ b/alloca86.S @@ -0,0 +1,27 @@ +/* ---------------------------------------------- */ +/* alloca86.S */ + +.globl _alloca + +_alloca: + pop %edx + pop %eax + add $3,%eax + and $-4,%eax + jz p3 +p1: + cmp $4096,%eax + jle p2 + sub $4096,%esp + sub $4096,%eax + test %eax,(%esp) + jmp p1 +p2: + sub %eax,%esp + mov %esp,%eax +p3: + push %edx + push %edx + ret + +/* ---------------------------------------------- */ |