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1#include <linux/kernel.h>2#include <elfutils/libdwfl.h>3#include "../../util/unwind-libdw.h"4#include "../../util/perf_regs.h"5#include "../../util/event.h"6#include "../../util/sample.h"7#include "dwarf-regs-table.h"8#include "perf_regs.h"9 10 11bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)12{13 struct unwind_info *ui = arg;14 struct regs_dump *user_regs = &ui->sample->user_regs;15 Dwarf_Word dwarf_regs[ARRAY_SIZE(s390_dwarf_regs)];16 17#define REG(r) ({ \18 Dwarf_Word val = 0; \19 perf_reg_value(&val, user_regs, PERF_REG_S390_##r); \20 val; \21})22 /*23 * For DWARF register mapping details,24 * see also perf/arch/s390/include/dwarf-regs-table.h25 */26 dwarf_regs[0] = REG(R0);27 dwarf_regs[1] = REG(R1);28 dwarf_regs[2] = REG(R2);29 dwarf_regs[3] = REG(R3);30 dwarf_regs[4] = REG(R4);31 dwarf_regs[5] = REG(R5);32 dwarf_regs[6] = REG(R6);33 dwarf_regs[7] = REG(R7);34 dwarf_regs[8] = REG(R8);35 dwarf_regs[9] = REG(R9);36 dwarf_regs[10] = REG(R10);37 dwarf_regs[11] = REG(R11);38 dwarf_regs[12] = REG(R12);39 dwarf_regs[13] = REG(R13);40 dwarf_regs[14] = REG(R14);41 dwarf_regs[15] = REG(R15);42 43 dwarf_regs[16] = REG(FP0);44 dwarf_regs[17] = REG(FP2);45 dwarf_regs[18] = REG(FP4);46 dwarf_regs[19] = REG(FP6);47 dwarf_regs[20] = REG(FP1);48 dwarf_regs[21] = REG(FP3);49 dwarf_regs[22] = REG(FP5);50 dwarf_regs[23] = REG(FP7);51 dwarf_regs[24] = REG(FP8);52 dwarf_regs[25] = REG(FP10);53 dwarf_regs[26] = REG(FP12);54 dwarf_regs[27] = REG(FP14);55 dwarf_regs[28] = REG(FP9);56 dwarf_regs[29] = REG(FP11);57 dwarf_regs[30] = REG(FP13);58 dwarf_regs[31] = REG(FP15);59 60 dwarf_regs[64] = REG(MASK);61 dwarf_regs[65] = REG(PC);62 63 dwfl_thread_state_register_pc(thread, dwarf_regs[65]);64 return dwfl_thread_state_registers(thread, 0, 32, dwarf_regs);65}66