From 84217308cf704fda8a9db817b458ccadf444efe9 Mon Sep 17 00:00:00 2001
From: Jakob Kaivo <jkk@ung.org>
Date: Fri, 8 Feb 2019 18:45:05 -0500
Subject: add headers and assembly

---
 src/nonstd/x86-64.s | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/nonstd/x86-64.s

(limited to 'src/nonstd/x86-64.s')

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
-- 
cgit v1.2.1