1 // SPDX-License-Identifier: GPL-2.0-only
3 * Mapping of DWARF debug register numbers into register names.
5 * Copyright (C) 2010 Will Deacon, ARM Ltd.
9 #include <linux/stringify.h>
10 #include <dwarf-regs.h>
12 struct pt_regs_dwarfnum
{
14 unsigned int dwarfnum
;
17 #define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num}
18 #define GPR_DWARFNUM_NAME(num) \
19 {.name = __stringify(%r##num), .dwarfnum = num}
20 #define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
24 * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0040a/IHI0040A_aadwarf.pdf
26 static const struct pt_regs_dwarfnum regdwarfnum_table
[] = {
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),
47 * get_arch_regstr() - lookup register name from it's DWARF register number
48 * @n: the DWARF register number
50 * get_arch_regstr() returns the name of the register in struct
51 * regdwarfnum_table from it's DWARF register number. If the register is not
52 * found in the table, this returns NULL;
54 const char *get_arch_regstr(unsigned int n
)
56 const struct pt_regs_dwarfnum
*roff
;
57 for (roff
= regdwarfnum_table
; roff
->name
!= NULL
; roff
++)
58 if (roff
->dwarfnum
== n
)