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Commit c5d88d9e authored by Robin Getz's avatar Robin Getz Committed by Bryan Wu
Browse files

Blackfin arch: update printk to use KERN_EMERG and reformat crash output 



to look like:

return address: [0x0357fcc4]; contents of:
0x0357fca0:  fcbc  0357  fe20  0357  0009  0000  6a8c  0345
0x0357fcb0:  000e  0000  fcc4  0357  fd44  0357  e128  00ad
0x0357fcc0:  00a0  0000 [000e] 0000  0000  0000  0080  0000
0x0357fcd0:  0000  0000  0000  0000  00a0  0000  000e  0000

instruction in [] is the offending instruction

Signed-off-by: default avatarRobin Getz <robin.getz@analog.com>
Signed-off-by: default avatarBryan Wu <bryan.wu@analog.com>
parent 4bf3f3cb

arch/blackfin/kernel/traps.c

+86 −55
Original line number Diff line number Diff line
@@ -148,8 +148,15 @@ asmlinkage void trap_c(struct pt_regs *fp) 
	unsigned long trapnr = fp->seqstat & SEQSTAT_EXCAUSE;



#ifdef CONFIG_KGDB

# define CHK_DEBUGGER_TRAP() do { CHK_DEBUGGER(trapnr, sig, info.si_code, fp,); } while (0)

# define CHK_DEBUGGER_TRAP_MAYBE() do { if (kgdb_connected) CHK_DEBUGGER_TRAP(); } while (0)

# define CHK_DEBUGGER_TRAP() \

	do { \

		CHK_DEBUGGER(trapnr, sig, info.si_code, fp); \

	} while (0)

# define CHK_DEBUGGER_TRAP_MAYBE() \

	do { \

		if (kgdb_connected) \

			CHK_DEBUGGER_TRAP(); \

	} while (0)

#else

# define CHK_DEBUGGER_TRAP() do { } while (0)

# define CHK_DEBUGGER_TRAP_MAYBE() do { } while (0)
@@ -297,7 +304,8 @@ asmlinkage void trap_c(struct pt_regs *fp) 
		info.si_code = ILL_CPLB_MULHIT;

#ifdef CONFIG_DEBUG_HUNT_FOR_ZERO

		sig = SIGSEGV;

		printk(KERN_EMERG "\n\nNULL pointer access (probably)\n");

		printk(KERN_EMERG "\n"

			KERN_EMERG "NULL pointer access (probably)\n");

#else

		sig = SIGILL;

		printk(KERN_EMERG EXC_0x27);
@@ -418,7 +426,9 @@ asmlinkage void trap_c(struct pt_regs *fp) 
		if (current->mm) {

			fp->pc = current->mm->start_code;

		} else {

			printk(KERN_EMERG "I can't return to memory that doesn't exist - bad things happen\n");

			printk(KERN_EMERG

				"I can't return to memory that doesn't exist"

				" - bad things happen\n");

			panic("Help - I've fallen and can't get up\n");

		}

	}
@@ -522,15 +532,19 @@ EXPORT_SYMBOL(dump_stack); 
void dump_bfin_regs(struct pt_regs *fp, void *retaddr)

{

	if (current->pid) {

		printk("\nCURRENT PROCESS:\n\n");

		printk("COMM=%s PID=%d\n", current->comm, current->pid);

		printk(KERN_EMERG "\n" KERN_EMERG "CURRENT PROCESS:\n"

			KERN_EMERG "\n");

		printk(KERN_EMERG "COMM=%s PID=%d\n",

			current->comm, current->pid);

	} else {

		printk

		    ("\nNo Valid pid - Either things are really messed up, or you are in the kernel\n");

		    (KERN_EMERG "\n" KERN_EMERG

		     "No Valid pid - Either things are really messed up,"

		     " or you are in the kernel\n");

	}



	if (current->mm) {

		printk("TEXT = 0x%p-0x%p  DATA = 0x%p-0x%p\n"

		printk(KERN_EMERG "TEXT = 0x%p-0x%p  DATA = 0x%p-0x%p\n"

		       "BSS = 0x%p-0x%p   USER-STACK = 0x%p\n\n",

		       (void*)current->mm->start_code,

		       (void*)current->mm->end_code,
@@ -541,7 +555,7 @@ void dump_bfin_regs(struct pt_regs *fp, void *retaddr) 
		       (void*)current->mm->start_stack);

	}



	printk("return address: 0x%p; contents of [PC-16...PC+8]:\n", retaddr);

	printk(KERN_EMERG "return address: [0x%p]; contents of:", retaddr);

	if (retaddr != 0 && retaddr <= (void*)physical_mem_end

#if L1_CODE_LENGTH != 0

	    /* FIXME: Copy the code out of L1 Instruction SRAM through dma
@@ -550,10 +564,15 @@ void dump_bfin_regs(struct pt_regs *fp, void *retaddr) 
	         && retaddr < (void*)(L1_CODE_START + L1_CODE_LENGTH))

#endif

	) {

		int i = 0;

		int i = ((unsigned int)retaddr & 0xFFFFFFF0) - 32;

		unsigned short x = 0;

		for (i = -16; i < 8; i++) {

			if (get_user(x, (unsigned short *)retaddr + i))

		for (; i < ((unsigned int)retaddr & 0xFFFFFFF0 ) + 32 ;

			i += 2) {

			if ( !(i & 0xF) )

				printk(KERN_EMERG "\n" KERN_EMERG

					"0x%08x: ", i);



			if (get_user(x, (unsigned short *)i))

				break;

#ifndef CONFIG_DEBUG_HWERR

			/* If one of the last few instructions was a STI
@@ -561,53 +580,65 @@ void dump_bfin_regs(struct pt_regs *fp, void *retaddr) 
			 * and we just noticed

			 */

			if (x >= 0x0040 && x <= 0x0047 && i <= 0)

				panic("\n\nWARNING : You should reconfigure the kernel to turn on\n"

					" 'Hardware error interrupt debugging'\n"

					" The rest of this error is meanless\n");

				panic("\n\nWARNING : You should reconfigure"

					" the kernel to turn on\n"

					" 'Hardware error interrupt"

					" debugging'\n"

					" The rest of this error"

					" is meanless\n");

#endif



			if (i == -8)

				printk("\n");

			if (i == 0)

				printk("X\n");

			if ( i == (unsigned int)retaddr )

				printk("[%04x]", x);

			else

				printk(" %04x ", x);

		}

		printk("\n" KERN_EMERG "\n");

	} else

		printk("Cannot look at the [PC] for it is in unreadable L1 SRAM - sorry\n");

		printk(KERN_EMERG

			"Cannot look at the [PC] for it is"

			"in unreadable L1 SRAM - sorry\n");



	printk("\n\n");



	printk("RETE:  %08lx  RETN: %08lx  RETX: %08lx  RETS: %08lx\n",

	printk(KERN_EMERG

		"RETE:  %08lx  RETN: %08lx  RETX: %08lx  RETS: %08lx\n",

		fp->rete, fp->retn, fp->retx, fp->rets);

	printk("IPEND: %04lx  SYSCFG: %04lx\n", fp->ipend, fp->syscfg);

	printk("SEQSTAT: %08lx    SP: %08lx\n", (long)fp->seqstat, (long)fp);

	printk("R0: %08lx    R1: %08lx    R2: %08lx    R3: %08lx\n",

	printk(KERN_EMERG "IPEND: %04lx  SYSCFG: %04lx\n",

		fp->ipend, fp->syscfg);

	printk(KERN_EMERG "SEQSTAT: %08lx    SP: %08lx\n",

		(long)fp->seqstat, (long)fp);

	printk(KERN_EMERG "R0: %08lx    R1: %08lx    R2: %08lx    R3: %08lx\n",

		fp->r0, fp->r1, fp->r2, fp->r3);

	printk("R4: %08lx    R5: %08lx    R6: %08lx    R7: %08lx\n",

	printk(KERN_EMERG "R4: %08lx    R5: %08lx    R6: %08lx    R7: %08lx\n",

		fp->r4, fp->r5, fp->r6, fp->r7);

	printk("P0: %08lx    P1: %08lx    P2: %08lx    P3: %08lx\n",

	printk(KERN_EMERG "P0: %08lx    P1: %08lx    P2: %08lx    P3: %08lx\n",

		fp->p0, fp->p1, fp->p2, fp->p3);

	printk("P4: %08lx    P5: %08lx    FP: %08lx\n", fp->p4, fp->p5, fp->fp);

	printk("A0.w: %08lx    A0.x: %08lx    A1.w: %08lx    A1.x: %08lx\n",

	printk(KERN_EMERG

		"P4: %08lx    P5: %08lx    FP: %08lx\n",

		fp->p4, fp->p5, fp->fp);

	printk(KERN_EMERG

		"A0.w: %08lx    A0.x: %08lx    A1.w: %08lx    A1.x: %08lx\n",

		fp->a0w, fp->a0x, fp->a1w, fp->a1x);



	printk("LB0: %08lx  LT0: %08lx  LC0: %08lx\n", fp->lb0, fp->lt0,

	       fp->lc0);

	printk("LB1: %08lx  LT1: %08lx  LC1: %08lx\n", fp->lb1, fp->lt1,

	       fp->lc1);

	printk("B0: %08lx  L0: %08lx  M0: %08lx  I0: %08lx\n", fp->b0, fp->l0,

	       fp->m0, fp->i0);

	printk("B1: %08lx  L1: %08lx  M1: %08lx  I1: %08lx\n", fp->b1, fp->l1,

	       fp->m1, fp->i1);

	printk("B2: %08lx  L2: %08lx  M2: %08lx  I2: %08lx\n", fp->b2, fp->l2,

	       fp->m2, fp->i2);

	printk("B3: %08lx  L3: %08lx  M3: %08lx  I3: %08lx\n", fp->b3, fp->l3,

	       fp->m3, fp->i3);



	printk("\nUSP: %08lx   ASTAT: %08lx\n", rdusp(), fp->astat);

	printk(KERN_EMERG "LB0: %08lx  LT0: %08lx  LC0: %08lx\n",

		fp->lb0, fp->lt0, fp->lc0);

	printk(KERN_EMERG "LB1: %08lx  LT1: %08lx  LC1: %08lx\n",

		fp->lb1, fp->lt1, fp->lc1);

	printk(KERN_EMERG "B0: %08lx  L0: %08lx  M0: %08lx  I0: %08lx\n",

		fp->b0, fp->l0, fp->m0, fp->i0);

	printk(KERN_EMERG "B1: %08lx  L1: %08lx  M1: %08lx  I1: %08lx\n",

		fp->b1, fp->l1, fp->m1, fp->i1);

	printk(KERN_EMERG "B2: %08lx  L2: %08lx  M2: %08lx  I2: %08lx\n",

		fp->b2, fp->l2, fp->m2, fp->i2);

	printk(KERN_EMERG "B3: %08lx  L3: %08lx  M3: %08lx  I3: %08lx\n",

		fp->b3, fp->l3, fp->m3, fp->i3);



	printk(KERN_EMERG "\n" KERN_EMERG "USP: %08lx   ASTAT: %08lx\n",

		rdusp(), fp->astat);

	if ((long)fp->seqstat & SEQSTAT_EXCAUSE) {

		printk(KERN_EMERG "DCPLB_FAULT_ADDR=%p\n", (void*)bfin_read_DCPLB_FAULT_ADDR());

		printk(KERN_EMERG "ICPLB_FAULT_ADDR=%p\n", (void*)bfin_read_ICPLB_FAULT_ADDR());

		printk(KERN_EMERG "DCPLB_FAULT_ADDR=%p\n",

			(void *)bfin_read_DCPLB_FAULT_ADDR());

		printk(KERN_EMERG "ICPLB_FAULT_ADDR=%p\n",

			(void *)bfin_read_ICPLB_FAULT_ADDR());

	}



	printk("\n\n");