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| author |   Chris Zankel <chris@zankel.net> | 2008-02-12 13:10:40 -0800 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2008-02-13 17:24:17 -0800 |
| commit | 03dfa442e5aaf644bb9b3b506abbd76786867eb1 (patch) | |
| tree | 32811e80cb896774b7a0d88f73c3f774332183c2 | |
| parent | [XTENSA] Fix modules for non-exec processor configurations (diff) | |
| download | linux-dev-03dfa442e5aaf644bb9b3b506abbd76786867eb1.tar.xz linux-dev-03dfa442e5aaf644bb9b3b506abbd76786867eb1.zip | |
[XTENSA] Remove unused code
We will never (need to) support signal handling coming from a
double exception. There are too many things that could go wrong
and delivering signals is not the fastest method for IPC, anyway.
Signed-off-by: Chris Zankel <chris@zankel.net>
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index b4b14a579a3c..b51ddb0dcf28 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -28,7 +28,6 @@ /* Unimplemented features. */ -#undef SIGNAL_HANDLING_IN_DOUBLE_EXCEPTION #undef KERNEL_STACK_OVERFLOW_CHECK #undef PREEMPTIBLE_KERNEL #undef ALLOCA_EXCEPTION_IN_IRAM @@ -431,11 +430,8 @@ common_exception_return: _bbsi.l a4, TIF_NEED_RESCHED, 3f _bbci.l a4, TIF_SIGPENDING, 4f -#ifndef SIGNAL_HANDLING_IN_DOUBLE_EXCEPTION l32i a4, a1, PT_DEPC bgeui a4, VALID_DOUBLE_EXCEPTION_ADDRESS, 4f -#endif - /* Reenable interrupts and call do_signal() */ wsr a3, PS @@ -1247,16 +1243,6 @@ fast_syscall_spill_registers_fixup: * Note: This frame might be the same as above. */ -#ifdef SIGNAL_HANDLING_IN_DOUBLE_EXCEPTION - /* Restore registers we precautiously saved. - * We have the value of the 'right' a3 - */ - - l32i a7, a2, PT_AREG5 - l32i a11, a2, PT_AREG6 - l32i a15, a2, PT_AREG7 -#endif - /* Setup stack pointer. */ addi a2, a2, -PT_USER_SIZE @@ -1290,14 +1276,6 @@ fast_syscall_spill_registers_fixup_return: s32i a2, a3, EXC_TABLE_PARAM l32i a2, a3, EXC_TABLE_KSTK -#ifdef SIGNAL_HANDLING_IN_DOUBLE_EXCEPTION - /* Save registers again that might be clobbered. */ - - s32i a7, a2, PT_AREG5 - s32i a11, a2, PT_AREG6 - s32i a15, a2, PT_AREG7 -#endif - /* Load WB at the time the exception occurred. */ rsr a3, SAR # WB is still in SAR |