kernel/tools/perf/arch/x86/util/unwind-libunwind.c

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