tools/perf/arch/x86/util/unwind.c

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