diff options
Diffstat (limited to 'bsps/powerpc/shared/ppc-print-stack.c')
| -rw-r--r-- | bsps/powerpc/shared/ppc-print-stack.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/bsps/powerpc/shared/ppc-print-stack.c b/bsps/powerpc/shared/ppc-print-stack.c new file mode 100644 index 0000000000..1e13b3d9ed --- /dev/null +++ b/bsps/powerpc/shared/ppc-print-stack.c @@ -0,0 +1,43 @@ +#include <inttypes.h> +#include <rtems/bspIo.h> +#include <libcpu/stackTrace.h> +#include <libcpu/spr.h> + +SPR_RO(PPC_LR) + +typedef struct FrameRec_ { + struct FrameRec_ *up; + void *lr; +} FrameRec, *Frame; + +#define CPU_STACK_TRACE_DEPTH 40 + +void CPU_stack_take_snapshot(void **stack, int size, void *pc, void *lr, void *r1) +{ +register Frame p = (Frame)lr; +register int i=0; + if (pc) stack[i++]=pc; + if (!p) + p = (Frame)_read_PPC_LR(); + stack[i++]=p; + p = r1; + if (!p) /* no macro for reading user regs */ + __asm__ __volatile__("mr %0, %%r1":"=r"(p)); + for (; i<size-1 && p->up; p=p->up, i++) { + stack[i]=p->up->lr; + } + stack[i]=0; +} + +void CPU_print_stack(void) +{ + void *stck[CPU_STACK_TRACE_DEPTH]; + int i; + CPU_stack_take_snapshot(stck,CPU_STACK_TRACE_DEPTH,0,0,0); + for (i=0; stck[i]; i++) { + if (i%5) printk("--> "); + else printk("\n"); + printk("0x%08" PRIuPTR, (uintptr_t)stck[i]); + } + printk("\n"); +} |