LXR linux/tools/perf/arch/x86/util/unwind-libunwind.c

   1
   2#ifndef REMOTE_UNWIND_LIBUNWIND
   3#include <errno.h>
   4#include <libunwind.h>
   5#include "perf_regs.h"
   6#include "../../util/unwind.h"
   7#include "../../util/debug.h"
   8#endif
   9
  10#ifdef HAVE_ARCH_X86_64_SUPPORT
  11int LIBUNWIND__ARCH_REG_ID(int regnum)
  12{
  13        int id;
  14
  15        switch (regnum) {
  16        case UNW_X86_64_RAX:
  17                id = PERF_REG_X86_AX;
  18                break;
  19        case UNW_X86_64_RDX:
  20                id = PERF_REG_X86_DX;
  21                break;
  22        case UNW_X86_64_RCX:
  23                id = PERF_REG_X86_CX;
  24                break;
  25        case UNW_X86_64_RBX:
  26                id = PERF_REG_X86_BX;
  27                break;
  28        case UNW_X86_64_RSI:
  29                id = PERF_REG_X86_SI;
  30                break;
  31        case UNW_X86_64_RDI:
  32                id = PERF_REG_X86_DI;
  33                break;
  34        case UNW_X86_64_RBP:
  35                id = PERF_REG_X86_BP;
  36                break;
  37        case UNW_X86_64_RSP:
  38                id = PERF_REG_X86_SP;
  39                break;
  40        case UNW_X86_64_R8:
  41                id = PERF_REG_X86_R8;
  42                break;
  43        case UNW_X86_64_R9:
  44                id = PERF_REG_X86_R9;
  45                break;
  46        case UNW_X86_64_R10:
  47                id = PERF_REG_X86_R10;
  48                break;
  49        case UNW_X86_64_R11:
  50                id = PERF_REG_X86_R11;
  51                break;
  52        case UNW_X86_64_R12:
  53                id = PERF_REG_X86_R12;
  54                break;
  55        case UNW_X86_64_R13:
  56                id = PERF_REG_X86_R13;
  57                break;
  58        case UNW_X86_64_R14:
  59                id = PERF_REG_X86_R14;
  60                break;
  61        case UNW_X86_64_R15:
  62                id = PERF_REG_X86_R15;
  63                break;
  64        case UNW_X86_64_RIP:
  65                id = PERF_REG_X86_IP;
  66                break;
  67        default:
  68                pr_err("unwind: invalid reg id %d\n", regnum);
  69                return -EINVAL;
  70        }
  71
  72        return id;
  73}
  74#else
  75int LIBUNWIND__ARCH_REG_ID(int regnum)
  76{
  77        int id;
  78
  79        switch (regnum) {
  80        case UNW_X86_EAX:
  81                id = PERF_REG_X86_AX;
  82                break;
  83        case UNW_X86_EDX:
  84                id = PERF_REG_X86_DX;
  85                break;
  86        case UNW_X86_ECX:
  87                id = PERF_REG_X86_CX;
  88                break;
  89        case UNW_X86_EBX:
  90                id = PERF_REG_X86_BX;
  91                break;
  92        case UNW_X86_ESI:
  93                id = PERF_REG_X86_SI;
  94                break;
  95        case UNW_X86_EDI:
  96                id = PERF_REG_X86_DI;
  97                break;
  98        case UNW_X86_EBP:
  99                id = PERF_REG_X86_BP;
 100                break;
 101        case UNW_X86_ESP:
 102                id = PERF_REG_X86_SP;
 103                break;
 104        case UNW_X86_EIP:
 105                id = PERF_REG_X86_IP;
 106                break;
 107        default:
 108                pr_err("unwind: invalid reg id %d\n", regnum);
 109                return -EINVAL;
 110        }
 111
 112        return id;
 113}
 114#endif /* HAVE_ARCH_X86_64_SUPPORT */
 115