source: rtems/c/src/lib/libcpu/powerpc/shared/src/stack.c @ e2cf289

5
Last change on this file since e2cf289 was 73f8d93, checked in by Sebastian Huber <sebastian.huber@…>, on 02/15/17 at 10:09:50

bsps/powerpc: Fix warnings

  • Property mode set to 100644
File size: 954 bytes
Line 
1#include "stackTrace.h"
2#include <rtems/bspIo.h>
3#include <libcpu/spr.h>
4#include <inttypes.h>
5
6SPR_RO(PPC_LR)
7
8typedef struct FrameRec_ {
9        struct FrameRec_ *up;
10        void             *lr;
11} FrameRec, *Frame;
12
13#define CPU_STACK_TRACE_DEPTH 40
14
15void CPU_stack_take_snapshot(void **stack, int size, void *pc, void *lr, void *r1)
16{
17register Frame  p = (Frame)lr;
18register int    i=0;
19        if (pc) stack[i++]=pc;
20        if (!p)
21                p = (Frame)_read_PPC_LR();
22        stack[i++]=p;
23        p = r1;
24        if (!p) /* no macro for reading user regs */
25                __asm__ __volatile__("mr %0, %%r1":"=r"(p));
26        for (; i<size-1 && p->up; p=p->up, i++) {
27                stack[i]=p->up->lr;
28        }
29        stack[i]=0;
30}
31
32void CPU_print_stack(void)
33{
34        void *stck[CPU_STACK_TRACE_DEPTH];
35        int i;
36        CPU_stack_take_snapshot(stck,CPU_STACK_TRACE_DEPTH,0,0,0);
37        for (i=0; stck[i]; i++) {
38                if (i%5) printk("--> ");
39                else     printk("\n");
40                printk("0x%08" PRIuPTR, (uintptr_t)stck[i]);
41        }
42        printk("\n");
43}
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