|
yann@2438
|
1 |
revert cfi additions to clone on i386/x86_64 to workaround problems in
|
|
yann@2438
|
2 |
gcc's unwinder code. this is not a bug in glibc, it triggers problems
|
|
yann@2438
|
3 |
elsewhere. this cfi code does not gain us a whole lot anyways.
|
|
yann@2438
|
4 |
|
|
yann@2438
|
5 |
http://gcc.gnu.org/ml/gcc/2006-12/msg00293.html
|
|
yann@2438
|
6 |
|
|
yann@2438
|
7 |
Index: sysdeps/unix/sysv/linux/i386/clone.S
|
|
yann@2438
|
8 |
===================================================================
|
|
yann@2438
|
9 |
RCS file: /cvs/glibc/libc/sysdeps/unix/sysv/linux/i386/clone.S,v
|
|
yann@2438
|
10 |
retrieving revision 1.27
|
|
yann@2438
|
11 |
retrieving revision 1.26
|
|
yann@2438
|
12 |
diff -u -p -r1.27 -r1.26
|
|
yann@2438
|
13 |
|
|
yann@2438
|
14 |
diff -durN glibc-2.13.orig/sysdeps/unix/sysv/linux/i386/clone.S glibc-2.13/sysdeps/unix/sysv/linux/i386/clone.S
|
|
yann@2438
|
15 |
--- glibc-2.13.orig/sysdeps/unix/sysv/linux/i386/clone.S 2006-12-04 00:12:36.000000000 +0100
|
|
yann@2438
|
16 |
+++ glibc-2.13/sysdeps/unix/sysv/linux/i386/clone.S 2009-11-13 00:49:45.000000000 +0100
|
|
yann@2438
|
17 |
@@ -120,9 +120,6 @@
|
|
yann@2438
|
18 |
ret
|
|
yann@2438
|
19 |
|
|
yann@2438
|
20 |
L(thread_start):
|
|
yann@2438
|
21 |
- cfi_startproc;
|
|
yann@2438
|
22 |
- /* Clearing frame pointer is insufficient, use CFI. */
|
|
yann@2438
|
23 |
- cfi_undefined (eip);
|
|
yann@2438
|
24 |
/* Note: %esi is zero. */
|
|
yann@2438
|
25 |
movl %esi,%ebp /* terminate the stack frame */
|
|
yann@2438
|
26 |
#ifdef RESET_PID
|
|
yann@2438
|
27 |
@@ -155,7 +152,6 @@
|
|
yann@2438
|
28 |
jmp L(haspid)
|
|
yann@2438
|
29 |
.previous
|
|
yann@2438
|
30 |
#endif
|
|
yann@2438
|
31 |
- cfi_endproc;
|
|
yann@2438
|
32 |
|
|
yann@2438
|
33 |
cfi_startproc
|
|
yann@2438
|
34 |
PSEUDO_END (BP_SYM (__clone))
|
|
yann@2438
|
35 |
diff -durN glibc-2.13.orig/sysdeps/unix/sysv/linux/x86_64/clone.S glibc-2.13/sysdeps/unix/sysv/linux/x86_64/clone.S
|
|
yann@2438
|
36 |
--- glibc-2.13.orig/sysdeps/unix/sysv/linux/x86_64/clone.S 2006-12-04 00:12:36.000000000 +0100
|
|
yann@2438
|
37 |
+++ glibc-2.13/sysdeps/unix/sysv/linux/x86_64/clone.S 2009-11-13 00:49:45.000000000 +0100
|
|
yann@2438
|
38 |
@@ -89,9 +89,6 @@
|
|
yann@2438
|
39 |
ret
|
|
yann@2438
|
40 |
|
|
yann@2438
|
41 |
L(thread_start):
|
|
yann@2438
|
42 |
- cfi_startproc;
|
|
yann@2438
|
43 |
- /* Clearing frame pointer is insufficient, use CFI. */
|
|
yann@2438
|
44 |
- cfi_undefined (rip);
|
|
yann@2438
|
45 |
/* Clear the frame pointer. The ABI suggests this be done, to mark
|
|
yann@2438
|
46 |
the outermost frame obviously. */
|
|
yann@2438
|
47 |
xorl %ebp, %ebp
|
|
yann@2438
|
48 |
@@ -116,7 +113,6 @@
|
|
yann@2438
|
49 |
/* Call exit with return value from function call. */
|
|
yann@2438
|
50 |
movq %rax, %rdi
|
|
yann@2438
|
51 |
call HIDDEN_JUMPTARGET (_exit)
|
|
yann@2438
|
52 |
- cfi_endproc;
|
|
yann@2438
|
53 |
|
|
yann@2438
|
54 |
cfi_startproc;
|
|
yann@2438
|
55 |
PSEUDO_END (BP_SYM (__clone))
|