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[PATCH][SH] CFI directives patch

From: Chung-Lin Tang <cltang at codesourcery dot com>
To: <libc-alpha at sourceware dot org>
Cc: Thomas Schwinge <thomas_schwinge at mentor dot com>
Date: Fri, 4 May 2012 15:03:04 +0800
Subject: [PATCH][SH] CFI directives patch

Hi Thomas, this patch adds CFI directives to epilogues in the SH port
assembly files.

Some of the cancellation point calls were also modified to now use CFI
assembler directives, instead of hard-coding the information.

Thanks,
Chung-Lin

2012-05-04  Chung-Lin Tang  <cltang@codesourcery.com>

        * sysdeps/unix/sysv/linux/sh/sh3/swapcontext.S
        (__swapcontext): Add CFI directives for epilogue.
        * sysdeps/unix/sysv/linux/sh/sh3/setcontext.S
        (__setcontext): Likewise.
        * sysdeps/unix/sysv/linux/sh/sh4/swapcontext.S
        (__swapcontext): Likewise.
        * sysdeps/unix/sysv/linux/sh/sh4/setcontext.S
        (__setcontext): Likewise.
        * sysdeps/sh/_mcount.S (_mount): Add CFI directives for epilogue.
        * sysdeps/unix/sh/sysdep.S (__syscall_error): Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep.h (SYSCALL_ERROR_HANDLER):
        Modify to avoid using r12 register.
        * nptl/sysdeps/unix/sysv/linux/sh/lowlevelrobustlock.S
        (__lll_robust_lock_wait): Add CFI directives for epilogue.
        (__lll_robust_timedlock_wait): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/lowlevellock.S
        (__lll_lock_wait_private): Add CFI directives for epilogue.
        (__lll_lock_wait): Likewise.
        (__lll_timedlock_wait): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/sem_wait.S
        (__new_sem_wait): Modify to use CFI directives.
        * nptl/sysdeps/unix/sysv/linux/sh/sem_timedwait.S
        (sem_timedwait): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_cond_wait.S
        (__pthread_cond_wait): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_cond_timedwait.S
        (__pthread_cond_timedwait): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/sysdep-cancel.h (PSEUDO,
        LOAD_ARGS_1,LOAD_ARGS_2,LOAD_ARGS_3,LOAD_ARGS_4): Add CFI restores.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_barrier_wait.S
        (pthread_barrier_wait): Add CFI directives.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_cond_signal.S
        (_pthread_cond_signal): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_unlock.S
        (__pthread_rwlock_unlock): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_wrlock.S
        (__pthread_rwlock_wrlock): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_rdlock.S
        (__pthread_rwlock_rdlock): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedwrlock.S
        (pthread_rwlock_timedwrlock): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_rwlock_timedrdlock.S
        (pthread_rwlock_timedrdlock): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/pthread_cond_broadcast.S
        (__pthread_cond_broadcast): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/sem_post.S
        (__new_sem_post): Likewise.
        * nptl/sysdeps/unix/sysv/linux/sh/sem_trywait.S
        (__new_sem_trywait): Likewise.

Attachment: sh-cfi.patch
Description: Text document

Follow-Ups:
- Re: [PATCH][SH] CFI directives patch
  - From: Richard Henderson
- Re: [PATCH][SH] CFI directives patch
  - From: Thomas Schwinge

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