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Blackfin: decode hwerrcause/excause when crashing

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Having to decode hwerrcause/excause values is a pain, so automate it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2008-10-06 04:21:41 -04:00
parent 2de95bb20c
commit 0ba1da116e
1 changed files with 40 additions and 2 deletions
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42
cpu/blackfin/traps.c
View file

@ -236,10 +236,45 @@ static void decode_address(char *buf, unsigned long address)
sprintf(buf, "<0x%p> /* unknown address */", address); sprintf(buf, "<0x%p> /* unknown address */", address);
} }
static char *strhwerrcause(uint16_t hwerrcause)
{
switch (hwerrcause) {
case 0x02: return "system mmr error";
case 0x03: return "external memory addressing error";
case 0x12: return "performance monitor overflow";
case 0x18: return "raise 5 instruction";
default: return "undef";
}
}
static char *strexcause(uint16_t excause)
{
switch (excause) {
case 0x00 ... 0xf: return "custom exception";
case 0x10: return "single step";
case 0x11: return "trace buffer full";
case 0x21: return "undef inst";
case 0x22: return "illegal inst";
case 0x23: return "dcplb prot violation";
case 0x24: return "misaligned data";
case 0x25: return "unrecoverable event";
case 0x26: return "dcplb miss";
case 0x27: return "multiple dcplb hit";
case 0x28: return "emulation watchpoint";
case 0x2a: return "misaligned inst";
case 0x2b: return "icplb prot violation";
case 0x2c: return "icplb miss";
case 0x2d: return "multiple icplb hit";
case 0x2e: return "illegal use of supervisor resource";
default: return "undef";
}
}
void dump(struct pt_regs *fp) void dump(struct pt_regs *fp)
{ {
char buf[150]; char buf[150];
size_t i; size_t i;
uint16_t hwerrcause, excause;
if (!ENABLE_DUMP) if (!ENABLE_DUMP)
return; return;
@ -247,11 +282,14 @@ void dump(struct pt_regs *fp)
/* fp->ipend is garbage, so load it ourself */ /* fp->ipend is garbage, so load it ourself */
fp->ipend = bfin_read_IPEND(); fp->ipend = bfin_read_IPEND();
hwerrcause = (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P;
excause = (fp->seqstat & EXCAUSE) >> EXCAUSE_P;
printf("SEQUENCER STATUS:\n"); printf("SEQUENCER STATUS:\n");
printf(" SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n", printf(" SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n",
fp->seqstat, fp->ipend, fp->syscfg); fp->seqstat, fp->ipend, fp->syscfg);
printf(" HWERRCAUSE: 0x%lx\n", (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P); printf(" HWERRCAUSE: 0x%lx: %s\n", hwerrcause, strhwerrcause(hwerrcause));
printf(" EXCAUSE : 0x%lx\n", (fp->seqstat & EXCAUSE) >> EXCAUSE_P); printf(" EXCAUSE : 0x%lx: %s\n", excause, strexcause(excause));
for (i = 6; i <= 15; ++i) { for (i = 6; i <= 15; ++i) {
if (fp->ipend & (1 << i)) { if (fp->ipend & (1 << i)) {
decode_address(buf, bfin_read32(EVT0 + 4*i)); decode_address(buf, bfin_read32(EVT0 + 4*i));