diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2008-10-06 04:21:41 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2008-10-23 05:03:50 -0400 |
| commit | 0ba1da116e5edcb0c5ae4a7585d73f6548400a06 (patch) | |
| tree | 3d82fb56d03f668874933195e2b47c0568826b70 /cpu | |
| parent | 2de95bb20c488f20298df6881b700a5a757ee780 (diff) | |
Blackfin: decode hwerrcause/excause when crashing
Having to decode hwerrcause/excause values is a pain, so automate it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/blackfin/traps.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/cpu/blackfin/traps.c b/cpu/blackfin/traps.c index 5a26c52e84..d17c0a195d 100644 --- a/cpu/blackfin/traps.c +++ b/cpu/blackfin/traps.c @@ -236,10 +236,45 @@ static void decode_address(char *buf, unsigned long 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) { char buf[150]; size_t i; + uint16_t hwerrcause, excause; if (!ENABLE_DUMP) return; @@ -247,11 +282,14 @@ void dump(struct pt_regs *fp) /* fp->ipend is garbage, so load it ourself */ fp->ipend = bfin_read_IPEND(); + hwerrcause = (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P; + excause = (fp->seqstat & EXCAUSE) >> EXCAUSE_P; + printf("SEQUENCER STATUS:\n"); printf(" SEQSTAT: %08lx IPEND: %04lx SYSCFG: %04lx\n", fp->seqstat, fp->ipend, fp->syscfg); - printf(" HWERRCAUSE: 0x%lx\n", (fp->seqstat & HWERRCAUSE) >> HWERRCAUSE_P); - printf(" EXCAUSE : 0x%lx\n", (fp->seqstat & EXCAUSE) >> EXCAUSE_P); + printf(" HWERRCAUSE: 0x%lx: %s\n", hwerrcause, strhwerrcause(hwerrcause)); + printf(" EXCAUSE : 0x%lx: %s\n", excause, strexcause(excause)); for (i = 6; i <= 15; ++i) { if (fp->ipend & (1 << i)) { decode_address(buf, bfin_read32(EVT0 + 4*i)); |