diff options
Diffstat (limited to 'lib/libc/arch/amd64/gen/alloca.S')
| -rw-r--r-- | lib/libc/arch/amd64/gen/alloca.S | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/libc/arch/amd64/gen/alloca.S b/lib/libc/arch/amd64/gen/alloca.S new file mode 100644 index 00000000000..8c15583012c --- /dev/null +++ b/lib/libc/arch/amd64/gen/alloca.S @@ -0,0 +1,13 @@ +/* $OpenBSD: alloca.S,v 1.1 2004/01/28 01:44:45 mickey Exp $ */ +/* $NetBSD: alloca.S,v 1.1 2001/06/19 00:25:02 fvdl Exp $ */ + +#include <machine/asm.h> + +ENTRY(alloca) + popq %rdx + movq %rsp,%rcx + addq $15,%rdi /* round up to 16 bytes */ + andq $~15,%rdi + subq %rdi,%rsp + movq %rsp,%rax + jmp *%rdx |