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1// SPDX-License-Identifier: GPL-2.02#include <elfutils/libdwfl.h>3#include "perf_regs.h"4#include "../../../util/unwind-libdw.h"5#include "../../../util/perf_regs.h"6#include "../../../util/sample.h"7 8bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)9{10 struct unwind_info *ui = arg;11 struct regs_dump *user_regs = &ui->sample->user_regs;12 Dwarf_Word dwarf_regs[PERF_REG_ARM64_MAX], dwarf_pc;13 14#define REG(r) ({ \15 Dwarf_Word val = 0; \16 perf_reg_value(&val, user_regs, PERF_REG_ARM64_##r); \17 val; \18})19 20 dwarf_regs[0] = REG(X0);21 dwarf_regs[1] = REG(X1);22 dwarf_regs[2] = REG(X2);23 dwarf_regs[3] = REG(X3);24 dwarf_regs[4] = REG(X4);25 dwarf_regs[5] = REG(X5);26 dwarf_regs[6] = REG(X6);27 dwarf_regs[7] = REG(X7);28 dwarf_regs[8] = REG(X8);29 dwarf_regs[9] = REG(X9);30 dwarf_regs[10] = REG(X10);31 dwarf_regs[11] = REG(X11);32 dwarf_regs[12] = REG(X12);33 dwarf_regs[13] = REG(X13);34 dwarf_regs[14] = REG(X14);35 dwarf_regs[15] = REG(X15);36 dwarf_regs[16] = REG(X16);37 dwarf_regs[17] = REG(X17);38 dwarf_regs[18] = REG(X18);39 dwarf_regs[19] = REG(X19);40 dwarf_regs[20] = REG(X20);41 dwarf_regs[21] = REG(X21);42 dwarf_regs[22] = REG(X22);43 dwarf_regs[23] = REG(X23);44 dwarf_regs[24] = REG(X24);45 dwarf_regs[25] = REG(X25);46 dwarf_regs[26] = REG(X26);47 dwarf_regs[27] = REG(X27);48 dwarf_regs[28] = REG(X28);49 dwarf_regs[29] = REG(X29);50 dwarf_regs[30] = REG(LR);51 dwarf_regs[31] = REG(SP);52 53 if (!dwfl_thread_state_registers(thread, 0, PERF_REG_ARM64_MAX,54 dwarf_regs))55 return false;56 57 dwarf_pc = REG(PC);58 dwfl_thread_state_register_pc(thread, dwarf_pc);59 60 return true;61}62