fix x32 __set_thread_area failure due to junk in upper bits

the kernel does not properly clear the upper bits of the syscall
argument, so we have to do it before the syscall.

diff --git a/src/thread/x32/__set_thread_area.s b/src/thread/x32/__set_thread_area.s
index 94bc36300c240e9476f57eb705d577a33d10b6d4..e0daf72f5f020cebc96a59e10438b59f19b2b0f2 100644 (file)
--- a/src/thread/x32/__set_thread_area.s
+++ b/src/thread/x32/__set_thread_area.s
@@ -3,7 +3,7 @@
 .global __set_thread_area
 .type __set_thread_area,@function
 __set_thread_area:
-       mov %rdi,%rsi           /* shift for syscall */
+       mov %edi,%esi           /* shift for syscall */
        movl $0x1002,%edi       /* SET_FS register */
        movl $0x4000009e,%eax          /* set fs segment to */
        syscall                 /* arch_prctl(SET_FS, arg)*/