1// SPDX-License-Identifier: GPL-2.0
 2/* 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}