59 lines · c
1// SPDX-License-Identifier: GPL-2.02/* 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 10bool 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