tools/perf/arch/mips/util/unwind-libunwind.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <errno.h>
   4 #include <libunwind.h>
   5 #include "perf_regs.h"
   6 #include "../../util/unwind.h"
   7 #include "util/debug.h"
   8
   9 int libunwind__arch_reg_id(int regnum)
  10 {
  11         switch (regnum) {
  12         case UNW_MIPS_R1 ... UNW_MIPS_R25:
  13                 return regnum - UNW_MIPS_R1 + PERF_REG_MIPS_R1;
  14         case UNW_MIPS_R28 ... UNW_MIPS_R31:
  15                 return regnum - UNW_MIPS_R28 + PERF_REG_MIPS_R28;
  16         case UNW_MIPS_PC:
  17                 return PERF_REG_MIPS_PC;
  18         default:
  19                 pr_err("unwind: invalid reg id %d\n", regnum);
  20                 return -EINVAL;
  21         }
  22 }