Port musl to x86-64. One giant commit!

[musl] / src / thread / x86_64 / __set_thread_area.s

diff --git a/src/thread/x86_64/__set_thread_area.s b/src/thread/x86_64/__set_thread_area.s
new file mode 100644 (file)
index 0000000..ed35b7a
--- /dev/null
+++ b/src/thread/x86_64/__set_thread_area.s
@@ -0,0 +1,15 @@
+/* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
+.text
+.global __set_thread_area
+.type   __set_thread_area,%function
+__set_thread_area:
+        push %rbx               /* save x86_64 abi clobbered registers */
+        push %r11
+        mov %rdi,%rsi           /* shift for syscall */
+        movl $0x1002,%edi       /* SET_FS register */
+        movl $158,%eax          /* set fs segment to */
+        syscall                 /* arch_prctl(SET_FS, arg)*/
+        pop %r11                /* restore clobbered registers */
+        pop %rbx
+       ret
+.size __set_thread_area,.-__set_thread_area