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Blackfin arch: cleanup the icplb/dcplb multiple hit checks 

so that we always send the same signal and we handle the NULL ptr condition properly

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
This commit is contained in:
Mike Frysinger 2008-05-17 16:18:08 +08:00 committed by Bryan Wu
parent 803a8d2acb
commit c6c6f75d54
1 changed files with 10 additions and 10 deletions
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20
arch/blackfin/kernel/traps.c
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@ -364,13 +364,13 @@ asmlinkage void trap_c(struct pt_regs *fp)
/* 0x27 - Data CPLB Multiple Hits - Linux Trap Zero, handled here */
case VEC_CPLB_MHIT:
info.si_code = ILL_CPLB_MULHIT;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
sig = SIGSEGV;
printk(KERN_NOTICE "NULL pointer access (probably)\n");
#else
sig = SIGILL;
printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (saved_dcplb_fault_addr < (void *)FIXED_CODE_START)
printk(KERN_NOTICE "NULL pointer access\n");
else
#endif
printk(KERN_NOTICE EXC_0x27(KERN_NOTICE));
CHK_DEBUGGER_TRAP();
break;
/* 0x28 - Emulation Watchpoint, handled here */
@ -419,13 +419,13 @@ asmlinkage void trap_c(struct pt_regs *fp)
/* 0x2D - Instruction CPLB Multiple Hits, handled here */
case VEC_CPLB_I_MHIT:
info.si_code = ILL_CPLB_MULHIT;
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
sig = SIGSEGV;
printk(KERN_NOTICE "Jump to address 0 - 0x0fff\n");
#else
sig = SIGILL;
printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO
if (saved_icplb_fault_addr < (void *)FIXED_CODE_START)
printk(KERN_NOTICE "Jump to NULL address\n");
else
#endif
printk(KERN_NOTICE EXC_0x2D(KERN_NOTICE));
CHK_DEBUGGER_TRAP();
break;
/* 0x2E - Illegal use of Supervisor Resource, handled here */