142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
/* Register names and numbers for LoongArch DWARF.
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Copyright (C) 2023 OpenAnolis community LoongArch SIG.
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Copyright (C) 2023 Loongson Technology Corporation Limted.
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This file is part of elfutils.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <string.h>
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#include <dwarf.h>
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#define BACKEND loongarch_
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#include "libebl_CPU.h"
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ssize_t
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loongarch_register_info (Ebl *ebl, int regno, char *name, size_t namelen,
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const char **prefix, const char **setname,
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int *bits, int *type)
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{
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if (name == NULL)
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return 64;
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*prefix = "";
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if (regno < 32)
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{
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*setname = "integer";
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*type = DW_ATE_signed;
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*bits = ebl->class == ELFCLASS64 ? 64 : 32;
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}
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else
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{
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*setname = "FPU";
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*type = DW_ATE_float;
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*bits = 64;
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}
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switch (regno)
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{
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case 0:
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return stpcpy (name, "zero") + 1 - name;
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case 1:
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*type = DW_ATE_address;
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return stpcpy (name, "ra") + 1 - name;
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case 2:
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*type = DW_ATE_address;
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return stpcpy (name, "tp") + 1 - name;
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case 3:
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*type = DW_ATE_address;
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return stpcpy (name, "sp") + 1 - name;
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case 4 ... 11:
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name[0] = 'a';
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name[1] = regno - 4 + '0';
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namelen = 2;
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break;
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case 12 ... 20:
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name[0] = 't';
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name[1] = regno - 12 + '0';
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namelen = 2;
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break;
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case 21:
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return stpcpy (name, "u0") + 1 - name;
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case 22:
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*type = DW_ATE_address;
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return stpcpy (name, "fp") + 1 - name;
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case 23 ... 31:
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name[0] = 's';
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name[1] = regno - 23 + '0';
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namelen = 2;
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break;
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case 32 ... 39:
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name[0] = 'f';
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name[1] = 'a';
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name[2] = regno - 32 + '0';
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namelen = 3;
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break;
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case 40 ... 49:
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name[0] = 'f';
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name[1] = 't';
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name[2] = regno - 40 + '0';
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namelen = 3;
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break;
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case 50 ... 55:
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name[0] = 'f';
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name[1] = 't';
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name[2] = '1';
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name[3] = regno - 50 + '0';
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namelen = 4;
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break;
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case 56 ... 63:
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name[0] = 'f';
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name[1] = 's';
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name[2] = regno - 56 + '0';
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namelen = 3;
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break;
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default:
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*setname = NULL;
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return 0;
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}
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name[namelen++] = '\0';
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return namelen;
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}
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