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 "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[32]; 15 16 #define REG(r) ({ \ 17 Dwarf_Word val = 0; \ 18 perf_reg_value(&val, user_regs, PERF_REG_RISCV_##r); \ 19 val; \ 20 }) 21 22 dwarf_regs[0] = 0; 23 dwarf_regs[1] = REG(RA); 24 dwarf_regs[2] = REG(SP); 25 dwarf_regs[3] = REG(GP); 26 dwarf_regs[4] = REG(TP); 27 dwarf_regs[5] = REG(T0); 28 dwarf_regs[6] = REG(T1); 29 dwarf_regs[7] = REG(T2); 30 dwarf_regs[8] = REG(S0); 31 dwarf_regs[9] = REG(S1); 32 dwarf_regs[10] = REG(A0); 33 dwarf_regs[11] = REG(A1); 34 dwarf_regs[12] = REG(A2); 35 dwarf_regs[13] = REG(A3); 36 dwarf_regs[14] = REG(A4); 37 dwarf_regs[15] = REG(A5); 38 dwarf_regs[16] = REG(A6); 39 dwarf_regs[17] = REG(A7); 40 dwarf_regs[18] = REG(S2); 41 dwarf_regs[19] = REG(S3); 42 dwarf_regs[20] = REG(S4); 43 dwarf_regs[21] = REG(S5); 44 dwarf_regs[22] = REG(S6); 45 dwarf_regs[23] = REG(S7); 46 dwarf_regs[24] = REG(S8); 47 dwarf_regs[25] = REG(S9); 48 dwarf_regs[26] = REG(S10); 49 dwarf_regs[27] = REG(S11); 50 dwarf_regs[28] = REG(T3); 51 dwarf_regs[29] = REG(T4); 52 dwarf_regs[30] = REG(T5); 53 dwarf_regs[31] = REG(T6); 54 dwfl_thread_state_register_pc(thread, REG(PC)); 55 56 return dwfl_thread_state_registers(thread, 0, PERF_REG_RISCV_MAX, 57 dwarf_regs); 58 } 59