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

   1// SPDX-License-Identifier: GPL-2.0
   2
   3#include <errno.h>
   4#ifndef REMOTE_UNWIND_LIBUNWIND
   5#include <libunwind.h>
   6#include "perf_regs.h"
   7#include "../../util/unwind.h"
   8#include "../../util/debug.h"
   9#endif
  10
  11#ifdef HAVE_ARCH_X86_64_SUPPORT
  12int LIBUNWIND__ARCH_REG_ID(int regnum)
  13{
  14        int id;
  15
  16        switch (regnum) {
  17        case UNW_X86_64_RAX:
  18                id = PERF_REG_X86_AX;
  19                break;
  20        case UNW_X86_64_RDX:
  21                id = PERF_REG_X86_DX;
  22                break;
  23        case UNW_X86_64_RCX:
  24                id = PERF_REG_X86_CX;
  25                break;
  26        case UNW_X86_64_RBX:
  27                id = PERF_REG_X86_BX;
  28                break;
  29        case UNW_X86_64_RSI:
  30                id = PERF_REG_X86_SI;
  31                break;
  32        case UNW_X86_64_RDI:
  33                id = PERF_REG_X86_DI;
  34                break;
  35        case UNW_X86_64_RBP:
  36                id = PERF_REG_X86_BP;
  37                break;
  38        case UNW_X86_64_RSP:
  39                id = PERF_REG_X86_SP;
  40                break;
  41        case UNW_X86_64_R8:
  42                id = PERF_REG_X86_R8;
  43                break;
  44        case UNW_X86_64_R9:
  45                id = PERF_REG_X86_R9;
  46                break;
  47        case UNW_X86_64_R10:
  48                id = PERF_REG_X86_R10;
  49                break;
  50        case UNW_X86_64_R11:
  51                id = PERF_REG_X86_R11;
  52                break;
  53        case UNW_X86_64_R12:
  54                id = PERF_REG_X86_R12;
  55                break;
  56        case UNW_X86_64_R13:
  57                id = PERF_REG_X86_R13;
  58                break;
  59        case UNW_X86_64_R14:
  60                id = PERF_REG_X86_R14;
  61                break;
  62        case UNW_X86_64_R15:
  63                id = PERF_REG_X86_R15;
  64                break;
  65        case UNW_X86_64_RIP:
  66                id = PERF_REG_X86_IP;
  67                break;
  68        default:
  69                pr_err("unwind: invalid reg id %d\n", regnum);
  70                return -EINVAL;
  71        }
  72
  73        return id;
  74}
  75#else
  76int LIBUNWIND__ARCH_REG_ID(int regnum)
  77{
  78        int id;
  79
  80        switch (regnum) {
  81        case UNW_X86_EAX:
  82                id = PERF_REG_X86_AX;
  83                break;
  84        case UNW_X86_EDX:
  85                id = PERF_REG_X86_DX;
  86                break;
  87        case UNW_X86_ECX:
  88                id = PERF_REG_X86_CX;
  89                break;
  90        case UNW_X86_EBX:
  91                id = PERF_REG_X86_BX;
  92                break;
  93        case UNW_X86_ESI:
  94                id = PERF_REG_X86_SI;
  95                break;
  96        case UNW_X86_EDI:
  97                id = PERF_REG_X86_DI;
  98                break;
  99        case UNW_X86_EBP:
 100                id = PERF_REG_X86_BP;
 101                break;
 102        case UNW_X86_ESP:
 103                id = PERF_REG_X86_SP;
 104                break;
 105        case UNW_X86_EIP:
 106                id = PERF_REG_X86_IP;
 107                break;
 108        default:
 109                pr_err("unwind: invalid reg id %d\n", regnum);
 110                return -EINVAL;
 111        }
 112
 113        return id;
 114}
 115#endif /* HAVE_ARCH_X86_64_SUPPORT */
 116