diff options
| author | Jakob Kaivo <jkk@ung.org> | 2019-02-08 18:45:05 -0500 |
|---|---|---|
| committer | Jakob Kaivo <jkk@ung.org> | 2019-02-08 18:45:05 -0500 |
| commit | 84217308cf704fda8a9db817b458ccadf444efe9 (patch) | |
| tree | 1d65e1610c22d6a68c90d67f4c7f3b147bfa151f /src/nonstd/x86-64.s | |
| parent | 7ef8a7379f7f7d09e71ccae2a0b688c3cd80423f (diff) | |
add headers and assembly
Diffstat (limited to 'src/nonstd/x86-64.s')
| -rw-r--r-- | src/nonstd/x86-64.s | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/nonstd/x86-64.s b/src/nonstd/x86-64.s new file mode 100644 index 00000000..60aba7a1 --- /dev/null +++ b/src/nonstd/x86-64.s @@ -0,0 +1,19 @@ +.global __syscall +__syscall: + mov %rdi, %rax + mov %rsi, %rdi + mov %rdx, %rsi + mov %rcx, %rdx + mov %r8, %r10 + mov %r9, %r8 + mov 8(%rsp), %r9 + syscall + ret + +/* FIXME: this seems to be unpossible to put in a shared library */ +/* FIXME: it may be worthwhile to separate this into crt1.s */ +.global _start +_start: + popq %rdi + movq %rsp, %rsi + call __libc_start |