// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 Hangzhou C-SKY Microsystems co.,ltd.
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* Mapping of DWARF debug register numbers into register names.
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*/
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#include <stddef.h>
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#include <errno.h> /* for EINVAL */
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#include <string.h> /* for strcmp */
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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 REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0}
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struct pt_regs_dwarfnum riscv_dwarf_regs_table[] = {
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REG_DWARFNUM_NAME("%zero", 0),
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REG_DWARFNUM_NAME("%ra", 1),
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REG_DWARFNUM_NAME("%sp", 2),
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REG_DWARFNUM_NAME("%gp", 3),
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REG_DWARFNUM_NAME("%tp", 4),
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REG_DWARFNUM_NAME("%t0", 5),
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REG_DWARFNUM_NAME("%t1", 6),
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REG_DWARFNUM_NAME("%t2", 7),
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REG_DWARFNUM_NAME("%s0", 8),
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REG_DWARFNUM_NAME("%s1", 9),
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REG_DWARFNUM_NAME("%a0", 10),
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REG_DWARFNUM_NAME("%a1", 11),
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REG_DWARFNUM_NAME("%a2", 12),
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REG_DWARFNUM_NAME("%a3", 13),
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REG_DWARFNUM_NAME("%a4", 14),
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REG_DWARFNUM_NAME("%a5", 15),
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REG_DWARFNUM_NAME("%a6", 16),
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REG_DWARFNUM_NAME("%a7", 17),
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REG_DWARFNUM_NAME("%s2", 18),
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REG_DWARFNUM_NAME("%s3", 19),
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REG_DWARFNUM_NAME("%s4", 20),
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REG_DWARFNUM_NAME("%s5", 21),
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REG_DWARFNUM_NAME("%s6", 22),
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REG_DWARFNUM_NAME("%s7", 23),
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REG_DWARFNUM_NAME("%s8", 24),
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REG_DWARFNUM_NAME("%s9", 25),
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REG_DWARFNUM_NAME("%s10", 26),
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REG_DWARFNUM_NAME("%s11", 27),
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REG_DWARFNUM_NAME("%t3", 28),
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REG_DWARFNUM_NAME("%t4", 29),
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REG_DWARFNUM_NAME("%t5", 30),
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REG_DWARFNUM_NAME("%t6", 31),
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REG_DWARFNUM_END,
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};
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#define RISCV_MAX_REGS ((sizeof(riscv_dwarf_regs_table) / \
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sizeof(riscv_dwarf_regs_table[0])) - 1)
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const char *get_arch_regstr(unsigned int n)
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{
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return (n < RISCV_MAX_REGS) ? riscv_dwarf_regs_table[n].name : NULL;
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}
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int regs_query_register_offset(const char *name)
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{
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const struct pt_regs_dwarfnum *roff;
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for (roff = riscv_dwarf_regs_table; roff->name; roff++)
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if (!strcmp(roff->name, name))
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return roff->dwarfnum;
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return -EINVAL;
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}
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