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/event.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[PERF_REG_CSKY_MAX];
15
16#define REG(r) ({						\
17	Dwarf_Word val = 0;					\
18	perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r);	\
19	val;							\
20})
21
22#if defined(__CSKYABIV2__)
23	dwarf_regs[0]  = REG(A0);
24	dwarf_regs[1]  = REG(A1);
25	dwarf_regs[2]  = REG(A2);
26	dwarf_regs[3]  = REG(A3);
27	dwarf_regs[4]  = REG(REGS0);
28	dwarf_regs[5]  = REG(REGS1);
29	dwarf_regs[6]  = REG(REGS2);
30	dwarf_regs[7]  = REG(REGS3);
31	dwarf_regs[8]  = REG(REGS4);
32	dwarf_regs[9]  = REG(REGS5);
33	dwarf_regs[10] = REG(REGS6);
34	dwarf_regs[11] = REG(REGS7);
35	dwarf_regs[12] = REG(REGS8);
36	dwarf_regs[13] = REG(REGS9);
37	dwarf_regs[14] = REG(SP);
38	dwarf_regs[15] = REG(LR);
39	dwarf_regs[16] = REG(EXREGS0);
40	dwarf_regs[17] = REG(EXREGS1);
41	dwarf_regs[18] = REG(EXREGS2);
42	dwarf_regs[19] = REG(EXREGS3);
43	dwarf_regs[20] = REG(EXREGS4);
44	dwarf_regs[21] = REG(EXREGS5);
45	dwarf_regs[22] = REG(EXREGS6);
46	dwarf_regs[23] = REG(EXREGS7);
47	dwarf_regs[24] = REG(EXREGS8);
48	dwarf_regs[25] = REG(EXREGS9);
49	dwarf_regs[26] = REG(EXREGS10);
50	dwarf_regs[27] = REG(EXREGS11);
51	dwarf_regs[28] = REG(EXREGS12);
52	dwarf_regs[29] = REG(EXREGS13);
53	dwarf_regs[30] = REG(EXREGS14);
54	dwarf_regs[31] = REG(TLS);
55	dwarf_regs[32] = REG(PC);
56#else
57	dwarf_regs[0]  = REG(SP);
58	dwarf_regs[1]  = REG(REGS9);
59	dwarf_regs[2]  = REG(A0);
60	dwarf_regs[3]  = REG(A1);
61	dwarf_regs[4]  = REG(A2);
62	dwarf_regs[5]  = REG(A3);
63	dwarf_regs[6]  = REG(REGS0);
64	dwarf_regs[7]  = REG(REGS1);
65	dwarf_regs[8]  = REG(REGS2);
66	dwarf_regs[9]  = REG(REGS3);
67	dwarf_regs[10] = REG(REGS4);
68	dwarf_regs[11] = REG(REGS5);
69	dwarf_regs[12] = REG(REGS6);
70	dwarf_regs[13] = REG(REGS7);
71	dwarf_regs[14] = REG(REGS8);
72	dwarf_regs[15] = REG(LR);
73#endif
74	dwfl_thread_state_register_pc(thread, REG(PC));
75
76	return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX,
77					   dwarf_regs);
78}