5
Last change
on this file since 814eccb4 was
7dbc43d,
checked in by Sebastian Huber <sebastian.huber@…>, on 03/13/18 at 05:18:38
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bsps/powerpc: Move basic support to bsps
This patch is a part of the BSP source reorganization.
Update #3285.
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-
Property mode set to
100644
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File size:
961 bytes
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1 | #include <inttypes.h> |
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2 | #include <rtems/bspIo.h> |
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3 | #include <libcpu/stackTrace.h> |
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4 | #include <libcpu/spr.h> |
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5 | |
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6 | SPR_RO(PPC_LR) |
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7 | |
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8 | typedef struct FrameRec_ { |
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9 | struct FrameRec_ *up; |
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10 | void *lr; |
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11 | } FrameRec, *Frame; |
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12 | |
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13 | #define CPU_STACK_TRACE_DEPTH 40 |
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14 | |
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15 | void CPU_stack_take_snapshot(void **stack, int size, void *pc, void *lr, void *r1) |
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16 | { |
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17 | register Frame p = (Frame)lr; |
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18 | register int i=0; |
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19 | if (pc) stack[i++]=pc; |
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20 | if (!p) |
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21 | p = (Frame)_read_PPC_LR(); |
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22 | stack[i++]=p; |
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23 | p = r1; |
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24 | if (!p) /* no macro for reading user regs */ |
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25 | __asm__ __volatile__("mr %0, %%r1":"=r"(p)); |
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26 | for (; i<size-1 && p->up; p=p->up, i++) { |
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27 | stack[i]=p->up->lr; |
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28 | } |
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29 | stack[i]=0; |
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30 | } |
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31 | |
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32 | void CPU_print_stack(void) |
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33 | { |
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34 | void *stck[CPU_STACK_TRACE_DEPTH]; |
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35 | int i; |
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36 | CPU_stack_take_snapshot(stck,CPU_STACK_TRACE_DEPTH,0,0,0); |
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37 | for (i=0; stck[i]; i++) { |
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38 | if (i%5) printk("--> "); |
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39 | else printk("\n"); |
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40 | printk("0x%08" PRIuPTR, (uintptr_t)stck[i]); |
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41 | } |
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42 | printk("\n"); |
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43 | } |
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