x86_64 vfork implementation

untested; should work.

diff --git a/src/process/x86_64/vfork.s b/src/process/x86_64/vfork.s
new file mode 100644 (file)
index 0000000..27af46f
--- /dev/null
+++ b/src/process/x86_64/vfork.s
@@ -0,0 +1,12 @@
+.global __vfork
+.weak vfork
+.type __vfork,@function
+.type vfork,@function
+__vfork:
+vfork:
+       pop %rdx
+       mov $58,%eax
+       syscall
+       push %rdx
+       mov %rax,%rdi
+       jmp __syscall_ret