1 // SPDX-License-Identifier: GPL-2.0-only !! 1 // SPDX-License-Identifier: GPL-2.0
2 /* 2 /*
3 * Mapping of DWARF debug register numbers int !! 3 * dwarf-regs.c : Mapping of DWARF debug register numbers into register names.
>> 4 *
>> 5 * Copyright (C) 2013 Cavium, Inc.
>> 6 *
>> 7 * This program is free software; you can redistribute it and/or modify
>> 8 * it under the terms of the GNU General Public License as published by
>> 9 * the Free Software Foundation; either version 2 of the License, or
>> 10 * (at your option) any later version.
>> 11 *
>> 12 * This program is distributed in the hope that it will be useful,
>> 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 15 * GNU General Public License for more details.
4 * 16 *
5 * Copyright (C) 2010 Will Deacon, ARM Ltd. <<
6 */ 17 */
7 18
8 #include <stddef.h> !! 19 #include <stdio.h>
9 #include <linux/stringify.h> <<
10 #include <dwarf-regs.h> 20 #include <dwarf-regs.h>
11 21
12 struct pt_regs_dwarfnum { !! 22 static const char *mips_gpr_names[32] = {
13 const char *name; !! 23 "$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9",
14 unsigned int dwarfnum; !! 24 "$10", "$11", "$12", "$13", "$14", "$15", "$16", "$17", "$18", "$19",
15 }; !! 25 "$20", "$21", "$22", "$23", "$24", "$25", "$26", "$27", "$28", "$29",
16 !! 26 "$30", "$31"
17 #define REG_DWARFNUM_NAME(r, num) {.name = r, <<
18 #define GPR_DWARFNUM_NAME(num) \ <<
19 {.name = __stringify(%r##num), .dwarfn <<
20 #define REG_DWARFNUM_END {.name = NULL, .dwarf <<
21 <<
22 /* <<
23 * Reference: <<
24 * http://infocenter.arm.com/help/topic/com.ar <<
25 */ <<
26 static const struct pt_regs_dwarfnum regdwarfn <<
27 GPR_DWARFNUM_NAME(0), <<
28 GPR_DWARFNUM_NAME(1), <<
29 GPR_DWARFNUM_NAME(2), <<
30 GPR_DWARFNUM_NAME(3), <<
31 GPR_DWARFNUM_NAME(4), <<
32 GPR_DWARFNUM_NAME(5), <<
33 GPR_DWARFNUM_NAME(6), <<
34 GPR_DWARFNUM_NAME(7), <<
35 GPR_DWARFNUM_NAME(8), <<
36 GPR_DWARFNUM_NAME(9), <<
37 GPR_DWARFNUM_NAME(10), <<
38 REG_DWARFNUM_NAME("%fp", 11), <<
39 REG_DWARFNUM_NAME("%ip", 12), <<
40 REG_DWARFNUM_NAME("%sp", 13), <<
41 REG_DWARFNUM_NAME("%lr", 14), <<
42 REG_DWARFNUM_NAME("%pc", 15), <<
43 REG_DWARFNUM_END, <<
44 }; 27 };
45 28
46 /** <<
47 * get_arch_regstr() - lookup register name fr <<
48 * @n: the DWARF register number <<
49 * <<
50 * get_arch_regstr() returns the name of the r <<
51 * regdwarfnum_table from it's DWARF register <<
52 * found in the table, this returns NULL; <<
53 */ <<
54 const char *get_arch_regstr(unsigned int n) 29 const char *get_arch_regstr(unsigned int n)
55 { 30 {
56 const struct pt_regs_dwarfnum *roff; !! 31 if (n < 32)
57 for (roff = regdwarfnum_table; roff->n !! 32 return mips_gpr_names[n];
58 if (roff->dwarfnum == n) !! 33 if (n == 64)
59 return roff->name; !! 34 return "hi";
>> 35 if (n == 65)
>> 36 return "lo";
60 return NULL; 37 return NULL;
61 } 38 }
62 39
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