1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (C) 2020-2023 Loongson Technology Corporation Limited */ 3 4 #include <elfutils/libdwfl.h> 5 #include "perf_regs.h" 6 #include "../../util/unwind-libdw.h" 7 #include "../../util/perf_regs.h" 8 #include "../../util/sample.h" 9 10 bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) 11 { 12 struct unwind_info *ui = arg; 13 struct regs_dump *user_regs = &ui->sample->user_regs; 14 Dwarf_Word dwarf_regs[PERF_REG_LOONGARCH_MAX]; 15 16 #define REG(r) ({ \ 17 Dwarf_Word val = 0; \ 18 perf_reg_value(&val, user_regs, PERF_REG_LOONGARCH_##r); \ 19 val; \ 20 }) 21 22 dwarf_regs[0] = 0; 23 dwarf_regs[1] = REG(R1); 24 dwarf_regs[2] = REG(R2); 25 dwarf_regs[3] = REG(R3); 26 dwarf_regs[4] = REG(R4); 27 dwarf_regs[5] = REG(R5); 28 dwarf_regs[6] = REG(R6); 29 dwarf_regs[7] = REG(R7); 30 dwarf_regs[8] = REG(R8); 31 dwarf_regs[9] = REG(R9); 32 dwarf_regs[10] = REG(R10); 33 dwarf_regs[11] = REG(R11); 34 dwarf_regs[12] = REG(R12); 35 dwarf_regs[13] = REG(R13); 36 dwarf_regs[14] = REG(R14); 37 dwarf_regs[15] = REG(R15); 38 dwarf_regs[16] = REG(R16); 39 dwarf_regs[17] = REG(R17); 40 dwarf_regs[18] = REG(R18); 41 dwarf_regs[19] = REG(R19); 42 dwarf_regs[20] = REG(R20); 43 dwarf_regs[21] = REG(R21); 44 dwarf_regs[22] = REG(R22); 45 dwarf_regs[23] = REG(R23); 46 dwarf_regs[24] = REG(R24); 47 dwarf_regs[25] = REG(R25); 48 dwarf_regs[26] = REG(R26); 49 dwarf_regs[27] = REG(R27); 50 dwarf_regs[28] = REG(R28); 51 dwarf_regs[29] = REG(R29); 52 dwarf_regs[30] = REG(R30); 53 dwarf_regs[31] = REG(R31); 54 dwfl_thread_state_register_pc(thread, REG(PC)); 55 56 return dwfl_thread_state_registers(thread, 0, PERF_REG_LOONGARCH_MAX, dwarf_regs); 57 } 58