unwind-libdw.c (1025B)
1// SPDX-License-Identifier: GPL-2.0 2#include <elfutils/libdwfl.h> 3#include "../../../util/unwind-libdw.h" 4#include "../../../util/perf_regs.h" 5#include "../../../util/event.h" 6 7bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) 8{ 9 struct unwind_info *ui = arg; 10 struct regs_dump *user_regs = &ui->sample->user_regs; 11 Dwarf_Word dwarf_regs[PERF_REG_ARM_MAX]; 12 13#define REG(r) ({ \ 14 Dwarf_Word val = 0; \ 15 perf_reg_value(&val, user_regs, PERF_REG_ARM_##r); \ 16 val; \ 17}) 18 19 dwarf_regs[0] = REG(R0); 20 dwarf_regs[1] = REG(R1); 21 dwarf_regs[2] = REG(R2); 22 dwarf_regs[3] = REG(R3); 23 dwarf_regs[4] = REG(R4); 24 dwarf_regs[5] = REG(R5); 25 dwarf_regs[6] = REG(R6); 26 dwarf_regs[7] = REG(R7); 27 dwarf_regs[8] = REG(R8); 28 dwarf_regs[9] = REG(R9); 29 dwarf_regs[10] = REG(R10); 30 dwarf_regs[11] = REG(FP); 31 dwarf_regs[12] = REG(IP); 32 dwarf_regs[13] = REG(SP); 33 dwarf_regs[14] = REG(LR); 34 dwarf_regs[15] = REG(PC); 35 36 return dwfl_thread_state_registers(thread, 0, PERF_REG_ARM_MAX, 37 dwarf_regs); 38}