xref: /OK3568_Linux_fs/kernel/tools/perf/arch/csky/util/unwind-libdw.c (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun // Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
3*4882a593Smuzhiyun 
4*4882a593Smuzhiyun #include <elfutils/libdwfl.h>
5*4882a593Smuzhiyun #include "../../util/unwind-libdw.h"
6*4882a593Smuzhiyun #include "../../util/perf_regs.h"
7*4882a593Smuzhiyun #include "../../util/event.h"
8*4882a593Smuzhiyun 
libdw__arch_set_initial_registers(Dwfl_Thread * thread,void * arg)9*4882a593Smuzhiyun bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
10*4882a593Smuzhiyun {
11*4882a593Smuzhiyun 	struct unwind_info *ui = arg;
12*4882a593Smuzhiyun 	struct regs_dump *user_regs = &ui->sample->user_regs;
13*4882a593Smuzhiyun 	Dwarf_Word dwarf_regs[PERF_REG_CSKY_MAX];
14*4882a593Smuzhiyun 
15*4882a593Smuzhiyun #define REG(r) ({						\
16*4882a593Smuzhiyun 	Dwarf_Word val = 0;					\
17*4882a593Smuzhiyun 	perf_reg_value(&val, user_regs, PERF_REG_CSKY_##r);	\
18*4882a593Smuzhiyun 	val;							\
19*4882a593Smuzhiyun })
20*4882a593Smuzhiyun 
21*4882a593Smuzhiyun #if defined(__CSKYABIV2__)
22*4882a593Smuzhiyun 	dwarf_regs[0]  = REG(A0);
23*4882a593Smuzhiyun 	dwarf_regs[1]  = REG(A1);
24*4882a593Smuzhiyun 	dwarf_regs[2]  = REG(A2);
25*4882a593Smuzhiyun 	dwarf_regs[3]  = REG(A3);
26*4882a593Smuzhiyun 	dwarf_regs[4]  = REG(REGS0);
27*4882a593Smuzhiyun 	dwarf_regs[5]  = REG(REGS1);
28*4882a593Smuzhiyun 	dwarf_regs[6]  = REG(REGS2);
29*4882a593Smuzhiyun 	dwarf_regs[7]  = REG(REGS3);
30*4882a593Smuzhiyun 	dwarf_regs[8]  = REG(REGS4);
31*4882a593Smuzhiyun 	dwarf_regs[9]  = REG(REGS5);
32*4882a593Smuzhiyun 	dwarf_regs[10] = REG(REGS6);
33*4882a593Smuzhiyun 	dwarf_regs[11] = REG(REGS7);
34*4882a593Smuzhiyun 	dwarf_regs[12] = REG(REGS8);
35*4882a593Smuzhiyun 	dwarf_regs[13] = REG(REGS9);
36*4882a593Smuzhiyun 	dwarf_regs[14] = REG(SP);
37*4882a593Smuzhiyun 	dwarf_regs[15] = REG(LR);
38*4882a593Smuzhiyun 	dwarf_regs[16] = REG(EXREGS0);
39*4882a593Smuzhiyun 	dwarf_regs[17] = REG(EXREGS1);
40*4882a593Smuzhiyun 	dwarf_regs[18] = REG(EXREGS2);
41*4882a593Smuzhiyun 	dwarf_regs[19] = REG(EXREGS3);
42*4882a593Smuzhiyun 	dwarf_regs[20] = REG(EXREGS4);
43*4882a593Smuzhiyun 	dwarf_regs[21] = REG(EXREGS5);
44*4882a593Smuzhiyun 	dwarf_regs[22] = REG(EXREGS6);
45*4882a593Smuzhiyun 	dwarf_regs[23] = REG(EXREGS7);
46*4882a593Smuzhiyun 	dwarf_regs[24] = REG(EXREGS8);
47*4882a593Smuzhiyun 	dwarf_regs[25] = REG(EXREGS9);
48*4882a593Smuzhiyun 	dwarf_regs[26] = REG(EXREGS10);
49*4882a593Smuzhiyun 	dwarf_regs[27] = REG(EXREGS11);
50*4882a593Smuzhiyun 	dwarf_regs[28] = REG(EXREGS12);
51*4882a593Smuzhiyun 	dwarf_regs[29] = REG(EXREGS13);
52*4882a593Smuzhiyun 	dwarf_regs[30] = REG(EXREGS14);
53*4882a593Smuzhiyun 	dwarf_regs[31] = REG(TLS);
54*4882a593Smuzhiyun 	dwarf_regs[32] = REG(PC);
55*4882a593Smuzhiyun #else
56*4882a593Smuzhiyun 	dwarf_regs[0]  = REG(SP);
57*4882a593Smuzhiyun 	dwarf_regs[1]  = REG(REGS9);
58*4882a593Smuzhiyun 	dwarf_regs[2]  = REG(A0);
59*4882a593Smuzhiyun 	dwarf_regs[3]  = REG(A1);
60*4882a593Smuzhiyun 	dwarf_regs[4]  = REG(A2);
61*4882a593Smuzhiyun 	dwarf_regs[5]  = REG(A3);
62*4882a593Smuzhiyun 	dwarf_regs[6]  = REG(REGS0);
63*4882a593Smuzhiyun 	dwarf_regs[7]  = REG(REGS1);
64*4882a593Smuzhiyun 	dwarf_regs[8]  = REG(REGS2);
65*4882a593Smuzhiyun 	dwarf_regs[9]  = REG(REGS3);
66*4882a593Smuzhiyun 	dwarf_regs[10] = REG(REGS4);
67*4882a593Smuzhiyun 	dwarf_regs[11] = REG(REGS5);
68*4882a593Smuzhiyun 	dwarf_regs[12] = REG(REGS6);
69*4882a593Smuzhiyun 	dwarf_regs[13] = REG(REGS7);
70*4882a593Smuzhiyun 	dwarf_regs[14] = REG(REGS8);
71*4882a593Smuzhiyun 	dwarf_regs[15] = REG(LR);
72*4882a593Smuzhiyun #endif
73*4882a593Smuzhiyun 	dwfl_thread_state_register_pc(thread, REG(PC));
74*4882a593Smuzhiyun 
75*4882a593Smuzhiyun 	return dwfl_thread_state_registers(thread, 0, PERF_REG_CSKY_MAX,
76*4882a593Smuzhiyun 					   dwarf_regs);
77*4882a593Smuzhiyun }
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