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
10 bool 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 }
59
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