| Original patch from: gentoo/src/patchsets/glibc/2.9/0070_all_glibc-i386-x86_64-revert-clone-cfi.patch |
| |
| -= BEGIN original header =- |
| revert cfi additions to clone on i386/x86_64 to workaround problems in |
| gcc's unwinder code. this is not a bug in glibc, it triggers problems |
| elsewhere. this cfi code does not gain us a whole lot anyways. |
| |
| http://gcc.gnu.org/ml/gcc/2006-12/msg00293.html |
| |
| -= END original header =- |
| |
| diff -durN glibc-2_9.orig/sysdeps/unix/sysv/linux/i386/clone.S glibc-2_9/sysdeps/unix/sysv/linux/i386/clone.S |
| --- glibc-2_9.orig/sysdeps/unix/sysv/linux/i386/clone.S 2006-12-04 00:12:36.000000000 +0100 |
| +++ glibc-2_9/sysdeps/unix/sysv/linux/i386/clone.S 2009-02-02 22:00:45.000000000 +0100 |
| @@ -120,9 +120,6 @@ |
| ret |
| |
| L(thread_start): |
| - cfi_startproc; |
| - /* Clearing frame pointer is insufficient, use CFI. */ |
| - cfi_undefined (eip); |
| /* Note: %esi is zero. */ |
| movl %esi,%ebp /* terminate the stack frame */ |
| #ifdef RESET_PID |
| @@ -155,7 +152,6 @@ |
| jmp L(haspid) |
| .previous |
| #endif |
| - cfi_endproc; |
| |
| cfi_startproc |
| PSEUDO_END (BP_SYM (__clone)) |
| diff -durN glibc-2_9.orig/sysdeps/unix/sysv/linux/x86_64/clone.S glibc-2_9/sysdeps/unix/sysv/linux/x86_64/clone.S |
| --- glibc-2_9.orig/sysdeps/unix/sysv/linux/x86_64/clone.S 2006-12-04 00:12:36.000000000 +0100 |
| +++ glibc-2_9/sysdeps/unix/sysv/linux/x86_64/clone.S 2009-02-02 22:00:45.000000000 +0100 |
| @@ -89,9 +89,6 @@ |
| ret |
| |
| L(thread_start): |
| - cfi_startproc; |
| - /* Clearing frame pointer is insufficient, use CFI. */ |
| - cfi_undefined (rip); |
| /* Clear the frame pointer. The ABI suggests this be done, to mark |
| the outermost frame obviously. */ |
| xorl %ebp, %ebp |
| @@ -116,7 +113,6 @@ |
| /* Call exit with return value from function call. */ |
| movq %rax, %rdi |
| call HIDDEN_JUMPTARGET (_exit) |
| - cfi_endproc; |
| |
| cfi_startproc; |
| PSEUDO_END (BP_SYM (__clone)) |
