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| author | Vineet Gupta <vgupta@synopsys.com> | 2013-04-04 14:37:52 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-05-07 13:43:55 +0530 |
| commit | c723ea4620a67fb0dbed5f5c33183543799e2177 (patch) | |
| tree | 19ee9abf49caa767017d41d2a337d8f174a8a87f /arch/arc | |
| parent | bd3c8b11eccddd311c9e6a56aa00c1af24ea5958 (diff) | |
| download | linux-c723ea4620a67fb0dbed5f5c33183543799e2177.tar.gz linux-c723ea4620a67fb0dbed5f5c33183543799e2177.tar.bz2 linux-c723ea4620a67fb0dbed5f5c33183543799e2177.zip | |
ARC: unaligned access emulation error handling consolidation
If CONFIG_ARC_MISALIGN_ACCESS is not enabled, or if the fixup fails,
call the same error handler: same signal/si_code to user (SIGBUS)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/kernel/entry.S | 4 | ||||
| -rw-r--r-- | arch/arc/kernel/traps.c | 17 |
2 files changed, 6 insertions, 15 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 91eeab81f52d..666a486f1e7b 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -393,12 +393,12 @@ ARC_ENTRY EV_TLBProtV #ifdef CONFIG_ARC_MISALIGN_ACCESS SAVE_CALLEE_SAVED_USER mov r3, sp ; callee_regs -#endif bl do_misaligned_access -#ifdef CONFIG_ARC_MISALIGN_ACCESS DISCARD_CALLEE_SAVED_USER +#else + bl do_misaligned_error #endif b ret_from_exception diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c index 74839d10d80f..0471d9c9dd54 100644 --- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -84,6 +84,7 @@ DO_ERROR_INFO(SIGILL, "Invalid Extn Insn", do_extension_fault, ILL_ILLOPC) DO_ERROR_INFO(SIGILL, "Illegal Insn (or Seq)", insterror_is_error, ILL_ILLOPC) DO_ERROR_INFO(SIGBUS, "Invalid Mem Access", do_memory_error, BUS_ADRERR) DO_ERROR_INFO(SIGTRAP, "Breakpoint Set", trap_is_brkpt, TRAP_BRKPT) +DO_ERROR_INFO(SIGBUS, "Misaligned Access", do_misaligned_error, BUS_ADRALN) #ifdef CONFIG_ARC_MISALIGN_ACCESS /* @@ -92,21 +93,11 @@ DO_ERROR_INFO(SIGTRAP, "Breakpoint Set", trap_is_brkpt, TRAP_BRKPT) int do_misaligned_access(unsigned long cause, unsigned long address, struct pt_regs *regs, struct callee_regs *cregs) { - if (misaligned_fixup(address, regs, cause, cregs) != 0) { - siginfo_t info; - - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRALN; - info.si_addr = (void __user *)address; - return handle_exception(cause, "Misaligned Access", regs, - &info); - } + if (misaligned_fixup(address, regs, cause, cregs) != 0) + return do_misaligned_error(cause, address, regs); + return 0; } - -#else -DO_ERROR_INFO(SIGSEGV, "Misaligned Access", do_misaligned_access, SEGV_ACCERR) #endif /* |