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61 lines
1.6 KiB
61 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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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 Will Deacon, ARM Ltd. |
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*/ |
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#include <stddef.h> |
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#include <linux/stringify.h> |
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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 REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} |
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#define GPR_DWARFNUM_NAME(num) \ |
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{.name = __stringify(%r##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://infocenter.arm.com/help/topic/com.arm.doc.ihi0040a/IHI0040A_aadwarf.pdf |
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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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REG_DWARFNUM_NAME("%fp", 11), |
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REG_DWARFNUM_NAME("%ip", 12), |
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REG_DWARFNUM_NAME("%sp", 13), |
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REG_DWARFNUM_NAME("%lr", 14), |
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REG_DWARFNUM_NAME("%pc", 15), |
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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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