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