1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun #include <elfutils/libdwfl.h> 3*4882a593Smuzhiyun #include "../../util/unwind-libdw.h" 4*4882a593Smuzhiyun #include "../../util/perf_regs.h" 5*4882a593Smuzhiyun #include "../../util/event.h" 6*4882a593Smuzhiyun libdw__arch_set_initial_registers(Dwfl_Thread * thread,void * arg)7*4882a593Smuzhiyunbool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg) 8*4882a593Smuzhiyun { 9*4882a593Smuzhiyun struct unwind_info *ui = arg; 10*4882a593Smuzhiyun struct regs_dump *user_regs = &ui->sample->user_regs; 11*4882a593Smuzhiyun Dwarf_Word dwarf_regs[PERF_REG_ARM_MAX]; 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #define REG(r) ({ \ 14*4882a593Smuzhiyun Dwarf_Word val = 0; \ 15*4882a593Smuzhiyun perf_reg_value(&val, user_regs, PERF_REG_ARM_##r); \ 16*4882a593Smuzhiyun val; \ 17*4882a593Smuzhiyun }) 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun dwarf_regs[0] = REG(R0); 20*4882a593Smuzhiyun dwarf_regs[1] = REG(R1); 21*4882a593Smuzhiyun dwarf_regs[2] = REG(R2); 22*4882a593Smuzhiyun dwarf_regs[3] = REG(R3); 23*4882a593Smuzhiyun dwarf_regs[4] = REG(R4); 24*4882a593Smuzhiyun dwarf_regs[5] = REG(R5); 25*4882a593Smuzhiyun dwarf_regs[6] = REG(R6); 26*4882a593Smuzhiyun dwarf_regs[7] = REG(R7); 27*4882a593Smuzhiyun dwarf_regs[8] = REG(R8); 28*4882a593Smuzhiyun dwarf_regs[9] = REG(R9); 29*4882a593Smuzhiyun dwarf_regs[10] = REG(R10); 30*4882a593Smuzhiyun dwarf_regs[11] = REG(FP); 31*4882a593Smuzhiyun dwarf_regs[12] = REG(IP); 32*4882a593Smuzhiyun dwarf_regs[13] = REG(SP); 33*4882a593Smuzhiyun dwarf_regs[14] = REG(LR); 34*4882a593Smuzhiyun dwarf_regs[15] = REG(PC); 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun return dwfl_thread_state_registers(thread, 0, PERF_REG_ARM_MAX, 37*4882a593Smuzhiyun dwarf_regs); 38*4882a593Smuzhiyun } 39