diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c b/c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c index 9a339250e2..40b360e461 100644 --- a/c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c +++ b/c/src/lib/libbsp/powerpc/shared/vectors/vectors_init.c @@ -23,6 +23,38 @@ static rtems_raw_except_connect_data exception_table[LAST_VALID_EXC + 1]; exception_handler_t globalExceptHdl; +/* T. Straumann: provide a stack trace + * <strauman@slac.stanford.edu>, 6/26/2001 + */ +typedef struct LRFrameRec_ { + struct LRFrameRec_ *frameLink; + unsigned long *lr; +} LRFrameRec, *LRFrame; + +#define STACK_CLAMP 50 /* in case we have a corrupted bottom */ + +void +BSP_printStackTrace(BSP_Exception_frame* excPtr) +{ +LRFrame f; +int i; + + printk("Stack Trace: "); + printk(" IP: 0x%08x, LR: 0x%08x\n", + excPtr->EXC_SRR0, excPtr->EXC_LR); + for (f=(LRFrame)excPtr->GPR1, i=0; f->frameLink && i<STACK_CLAMP; f=f->frameLink) { + printk("--^ 0x%08x", (long)(f->frameLink->lr)); + if (!(++i%5)) + printk("\n"); + } + if (i>=STACK_CLAMP) { + printk("Too many stack frames (stack possibly corrupted), giving up...\n"); + } else { + if (i%5) + printk("\n"); + } +} + void C_exception_handler(BSP_Exception_frame* excPtr) { int recoverable = 0; @@ -66,7 +98,10 @@ void C_exception_handler(BSP_Exception_frame* excPtr) printk("\t CTR = %x\n", excPtr->EXC_CTR); printk("\t XER = %x\n", excPtr->EXC_XER); printk("\t LR = %x\n", excPtr->EXC_LR); - printk("\t MSR = %x\n", excPtr->EXC_MSR); + printk("\t DAR = %x\n", excPtr->EXC_DAR); + + BSP_printStackTrace(excPtr); + if (excPtr->_EXC_number == ASM_DEC_VECTOR) recoverable = 1; if (excPtr->_EXC_number == ASM_SYS_VECTOR) |