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68 lines
2.3 KiB
Diff
68 lines
2.3 KiB
Diff
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From 1f674977c0f3ea1e67deea93fa8f4e795cc869ad Mon Sep 17 00:00:00 2001
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From: Timo Teräs <timo.teras@iki.fi>
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Date: Tue, 07 Dec 2010 09:27:29 +0000
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Subject: nptl: fix Unwind_Resume PLT calls
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My change a49b3a18e463cbe8c94c41501e386e7f4c61609e fixed two
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Unwind_Resume calls to go via PLT to avoid text relocations for PIC
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builds. However, it looks the reason for upstream not using PLT calls
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is that ebx gets clobbered. So we need to reload it.
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Signed-off-by: Timo Teräs <timo.teras@iki.fi>
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Signed-off-by: Austin Foxley <austinf@cetoncorp.com>
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---
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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
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index ac7983c..3b61367 100644
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--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
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+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S
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@@ -648,6 +648,10 @@ __condvar_tw_cleanup:
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movl %esi, (%esp)
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.LcallUR:
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+#ifdef __PIC__
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+ call __i686.get_pc_thunk.bx
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+ addl $_GLOBAL_OFFSET_TABLE_, %ebx
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+#endif
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call _Unwind_Resume@PLT
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hlt
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.LENDCODE:
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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
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index abc963f..a1294c5 100644
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--- a/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
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+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S
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@@ -535,6 +535,10 @@ __condvar_w_cleanup:
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movl %esi, (%esp)
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.LcallUR:
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+#ifdef __PIC__
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+ call __i686.get_pc_thunk.bx
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+ addl $_GLOBAL_OFFSET_TABLE_, %ebx
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+#endif
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call _Unwind_Resume@PLT
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hlt
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.LENDCODE:
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@@ -569,14 +573,14 @@ __condvar_w_cleanup:
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.Lcstend:
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#ifdef __PIC__
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- .section .gnu.linkonce.t.__i686.get_pc_thunk.cx,"ax",@progbits
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- .globl __i686.get_pc_thunk.cx
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- .hidden __i686.get_pc_thunk.cx
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- .type __i686.get_pc_thunk.cx,@function
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-__i686.get_pc_thunk.cx:
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- movl (%esp), %ecx;
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+ .section .gnu.linkonce.t.__i686.get_pc_thunk.bx,"ax",@progbits
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+ .globl __i686.get_pc_thunk.bx
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+ .hidden __i686.get_pc_thunk.bx
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+ .type __i686.get_pc_thunk.bx,@function
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+__i686.get_pc_thunk.bx:
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+ movl (%esp), %ebx;
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ret
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- .size __i686.get_pc_thunk.cx,.-__i686.get_pc_thunk.cx
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+ .size __i686.get_pc_thunk.bx,.-__i686.get_pc_thunk.bx
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#endif
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#ifdef SHARED
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--
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