diff options
author | Alexey Neyman <stilor@att.net> | 2017-02-07 23:53:53 (GMT) |
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committer | Alexey Neyman <stilor@att.net> | 2017-02-10 02:05:36 (GMT) |
commit | ac4a37c8c43eca8443943c110521a39cec8bf5fc (patch) | |
tree | c92d906db51fdfd77ace5ccbcdc1a9cf11589172 /patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch | |
parent | fb6fe0d70baaf4a3b545aa56b7b25a8457ab1204 (diff) |
Revert "patches: remove obsolete glibc patches"
This partially reverts commit 429b3e884662a3b9a72890aae23865501e66330f.
Bring back the patches for glibc 2.12 and newer. Propagate/refresh
some patches as needed.
Signed-off-by: Alexey Neyman <stilor@att.net>
Diffstat (limited to 'patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch')
-rw-r--r-- | patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch b/patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch new file mode 100644 index 0000000..95f5ace --- /dev/null +++ b/patches/glibc/ports-2.12.1/120-i386-x86_64-revert-clone-cfi.patch @@ -0,0 +1,55 @@ +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 + +Index: sysdeps/unix/sysv/linux/i386/clone.S +=================================================================== +RCS file: /cvs/glibc/libc/sysdeps/unix/sysv/linux/i386/clone.S,v +retrieving revision 1.27 +retrieving revision 1.26 +diff -u -p -r1.27 -r1.26 + +diff -durN glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/clone.S glibc-2.12.1/sysdeps/unix/sysv/linux/i386/clone.S +--- glibc-2.12.1.orig/sysdeps/unix/sysv/linux/i386/clone.S 2006-12-04 00:12:36.000000000 +0100 ++++ glibc-2.12.1/sysdeps/unix/sysv/linux/i386/clone.S 2009-11-13 00:49:45.000000000 +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-2.12.1.orig/sysdeps/unix/sysv/linux/x86_64/clone.S glibc-2.12.1/sysdeps/unix/sysv/linux/x86_64/clone.S +--- glibc-2.12.1.orig/sysdeps/unix/sysv/linux/x86_64/clone.S 2006-12-04 00:12:36.000000000 +0100 ++++ glibc-2.12.1/sysdeps/unix/sysv/linux/x86_64/clone.S 2009-11-13 00:49:45.000000000 +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)) |