tools/perf/arch/csky/util/unwind-libdw.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4 #include <elfutils/libdwfl.h>
   5 #include "../../util/unwind-libdw.h"
   6 #include "../../util/perf_regs.h"
   7 #include "../../util/event.h"
   8
   9 bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
  10 {
  11         struct unwind_info *ui = arg;
  12         struct regs_dump *user_regs = &ui->sample->user_regs;
  13         Dwarf_Word dwarf_regs[PERF_REG_CSKY_MAX];
  14
  15 #define REG(r) ({                                               \
  16         Dwarf_Word val = 0;                                     \
  17         perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r);     \
  18         val;                                                    \
  19 })
  20
  21 #if defined(__CSKYABIV2__)
  22         dwarf_regs[0]  = REG(A0);
  23         dwarf_regs[1]  = REG(A1);
  24         dwarf_regs[2]  = REG(A2);
  25         dwarf_regs[3]  = REG(A3);
  26         dwarf_regs[4]  = REG(REGS0);
  27         dwarf_regs[5]  = REG(REGS1);
  28         dwarf_regs[6]  = REG(REGS2);
  29         dwarf_regs[7]  = REG(REGS3);
  30         dwarf_regs[8]  = REG(REGS4);
  31         dwarf_regs[9]  = REG(REGS5);
  32         dwarf_regs[10] = REG(REGS6);
  33         dwarf_regs[11] = REG(REGS7);
  34         dwarf_regs[12] = REG(REGS8);
  35         dwarf_regs[13] = REG(REGS9);
  36         dwarf_regs[14] = REG(SP);
  37         dwarf_regs[15] = REG(LR);
  38         dwarf_regs[16] = REG(EXREGS0);
  39         dwarf_regs[17] = REG(EXREGS1);
  40         dwarf_regs[18] = REG(EXREGS2);
  41         dwarf_regs[19] = REG(EXREGS3);
  42         dwarf_regs[20] = REG(EXREGS4);
  43         dwarf_regs[21] = REG(EXREGS5);
  44         dwarf_regs[22] = REG(EXREGS6);
  45         dwarf_regs[23] = REG(EXREGS7);
  46         dwarf_regs[24] = REG(EXREGS8);
  47         dwarf_regs[25] = REG(EXREGS9);
  48         dwarf_regs[26] = REG(EXREGS10);
  49         dwarf_regs[27] = REG(EXREGS11);
  50         dwarf_regs[28] = REG(EXREGS12);
  51         dwarf_regs[29] = REG(EXREGS13);
  52         dwarf_regs[30] = REG(EXREGS14);
  53         dwarf_regs[31] = REG(TLS);
  54         dwarf_regs[32] = REG(PC);
  55 #else
  56         dwarf_regs[0]  = REG(SP);
  57         dwarf_regs[1]  = REG(REGS9);
  58         dwarf_regs[2]  = REG(A0);
  59         dwarf_regs[3]  = REG(A1);
  60         dwarf_regs[4]  = REG(A2);
  61         dwarf_regs[5]  = REG(A3);
  62         dwarf_regs[6]  = REG(REGS0);
  63         dwarf_regs[7]  = REG(REGS1);
  64         dwarf_regs[8]  = REG(REGS2);
  65         dwarf_regs[9]  = REG(REGS3);
  66         dwarf_regs[10] = REG(REGS4);
  67         dwarf_regs[11] = REG(REGS5);
  68         dwarf_regs[12] = REG(REGS6);
  69         dwarf_regs[13] = REG(REGS7);
  70         dwarf_regs[14] = REG(REGS8);
  71         dwarf_regs[15] = REG(LR);
  72 #endif
  73         dwfl_thread_state_register_pc(thread, REG(PC));
  74
  75         return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX,
  76                                            dwarf_regs);
  77 }