From 1f674977c0f3ea1e67deea93fa8f4e795cc869ad Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> Date: Tue, 7 Dec 2010 11:27:29 +0200 Subject: nptl: fix Unwind_Resume PLT calls MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit My change a49b3a18e463cbe8c94c41501e386e7f4c61609e fixed two Unwind_Resume calls to go via PLT to avoid text relocations for PIC builds. However, it looks the reason for upstream not using PLT calls is that ebx gets clobbered. So we need to reload it. Signed-off-by: Timo Teräs <timo.teras@iki.fi> Signed-off-by: Austin Foxley <austinf@cetoncorp.com> --- .../unix/sysv/linux/i386/i486/pthread_cond_timedwait.S | 4 ++++ .../unix/sysv/linux/i386/i486/pthread_cond_wait.S | 18 +++++++++++------- 2 files changed, 15 insertions(+), 7 deletions(-) (limited to 'libpthread') diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S index ac7983c49..3b61367e1 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S @@ -648,6 +648,10 @@ __condvar_tw_cleanup: movl %esi, (%esp) .LcallUR: +#ifdef __PIC__ + call __i686.get_pc_thunk.bx + addl $_GLOBAL_OFFSET_TABLE_, %ebx +#endif call _Unwind_Resume@PLT hlt .LENDCODE: diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S index abc963f07..a1294c509 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S @@ -535,6 +535,10 @@ __condvar_w_cleanup: movl %esi, (%esp) .LcallUR: +#ifdef __PIC__ + call __i686.get_pc_thunk.bx + addl $_GLOBAL_OFFSET_TABLE_, %ebx +#endif call _Unwind_Resume@PLT hlt .LENDCODE: @@ -569,14 +573,14 @@ __condvar_w_cleanup: .Lcstend: #ifdef __PIC__ - .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits - .globl __i686.get_pc_thunk.cx - .hidden __i686.get_pc_thunk.cx - .type __i686.get_pc_thunk.cx,@function -__i686.get_pc_thunk.cx: - movl (%esp), %ecx; + .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits + .globl __i686.get_pc_thunk.bx + .hidden __i686.get_pc_thunk.bx + .type __i686.get_pc_thunk.bx,@function +__i686.get_pc_thunk.bx: + movl (%esp), %ebx; ret - .size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx + .size __i686.get_pc_thunk.bx,.-__i686.get_pc_thunk.bx #endif #ifdef SHARED -- cgit v1.2.3