2024-09-09 08:52:07 +00:00
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/*
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* Mapping of DWARF debug register numbers into register names.
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*
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* Copyright (C) 2010 Ian Munsie, IBM Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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2024-09-09 08:57:42 +00:00
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#include <stddef.h>
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2024-09-09 08:52:07 +00:00
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#include <dwarf-regs.h>
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struct pt_regs_dwarfnum {
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const char *name;
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unsigned int dwarfnum;
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};
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#define STR(s) #s
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#define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num}
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#define GPR_DWARFNUM_NAME(num) \
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{.name = STR(%gpr##num), .dwarfnum = num}
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#define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
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/*
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* Reference:
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* http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html
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*/
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static const struct pt_regs_dwarfnum regdwarfnum_table[] = {
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GPR_DWARFNUM_NAME(0),
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GPR_DWARFNUM_NAME(1),
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GPR_DWARFNUM_NAME(2),
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GPR_DWARFNUM_NAME(3),
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GPR_DWARFNUM_NAME(4),
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GPR_DWARFNUM_NAME(5),
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GPR_DWARFNUM_NAME(6),
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GPR_DWARFNUM_NAME(7),
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GPR_DWARFNUM_NAME(8),
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GPR_DWARFNUM_NAME(9),
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GPR_DWARFNUM_NAME(10),
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GPR_DWARFNUM_NAME(11),
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GPR_DWARFNUM_NAME(12),
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GPR_DWARFNUM_NAME(13),
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GPR_DWARFNUM_NAME(14),
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GPR_DWARFNUM_NAME(15),
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GPR_DWARFNUM_NAME(16),
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GPR_DWARFNUM_NAME(17),
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GPR_DWARFNUM_NAME(18),
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GPR_DWARFNUM_NAME(19),
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GPR_DWARFNUM_NAME(20),
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GPR_DWARFNUM_NAME(21),
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GPR_DWARFNUM_NAME(22),
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GPR_DWARFNUM_NAME(23),
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GPR_DWARFNUM_NAME(24),
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GPR_DWARFNUM_NAME(25),
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GPR_DWARFNUM_NAME(26),
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GPR_DWARFNUM_NAME(27),
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GPR_DWARFNUM_NAME(28),
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GPR_DWARFNUM_NAME(29),
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GPR_DWARFNUM_NAME(30),
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GPR_DWARFNUM_NAME(31),
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REG_DWARFNUM_NAME("%msr", 66),
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REG_DWARFNUM_NAME("%ctr", 109),
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REG_DWARFNUM_NAME("%link", 108),
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REG_DWARFNUM_NAME("%xer", 101),
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REG_DWARFNUM_NAME("%dar", 119),
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REG_DWARFNUM_NAME("%dsisr", 118),
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REG_DWARFNUM_END,
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};
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/**
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* get_arch_regstr() - lookup register name from it's DWARF register number
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* @n: the DWARF register number
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*
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* get_arch_regstr() returns the name of the register in struct
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* regdwarfnum_table from it's DWARF register number. If the register is not
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* found in the table, this returns NULL;
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*/
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const char *get_arch_regstr(unsigned int n)
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{
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const struct pt_regs_dwarfnum *roff;
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for (roff = regdwarfnum_table; roff->name != NULL; roff++)
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if (roff->dwarfnum == n)
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return roff->name;
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return NULL;
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}
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