mirror of
https://github.com/autc04/Retro68.git
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154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
/* Register names and numbers for i386 DWARF.
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Copyright (C) 2005, 2006, 2007 Red Hat, Inc.
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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 i386_
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#include "libebl_CPU.h"
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ssize_t
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i386_register_info (Ebl *ebl __attribute__ ((unused)),
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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 46;
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if (regno < 0 || regno > 45 || namelen < 6)
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return -1;
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*prefix = "%";
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*bits = 32;
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*type = DW_ATE_unsigned;
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if (regno < 11)
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{
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*setname = "integer";
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if (regno < 9)
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*type = DW_ATE_signed;
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}
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else if (regno < 19)
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{
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*setname = "x87";
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*type = DW_ATE_float;
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*bits = 80;
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}
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else if (regno < 29)
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{
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*setname = "SSE";
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*bits = 128;
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}
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else if (regno < 37)
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{
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*setname = "MMX";
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*bits = 64;
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}
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else if (regno < 40)
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*setname = "FPU-control";
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else
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{
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*setname = "segment";
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*bits = 16;
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}
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switch (regno)
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{
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static const char baseregs[][2] =
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{
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"ax", "cx", "dx", "bx", "sp", "bp", "si", "di", "ip"
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};
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case 4:
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case 5:
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case 8:
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*type = DW_ATE_address;
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/* Fallthrough */
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case 0 ... 3:
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case 6 ... 7:
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name[0] = 'e';
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name[1] = baseregs[regno][0];
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name[2] = baseregs[regno][1];
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namelen = 3;
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break;
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case 9:
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return stpcpy (name, "eflags") + 1 - name;
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case 10:
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return stpcpy (name, "trapno") + 1 - name;
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case 11 ... 18:
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name[0] = 's';
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name[1] = 't';
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name[2] = regno - 11 + '0';
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namelen = 3;
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break;
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case 21 ... 28:
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name[0] = 'x';
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name[1] = 'm';
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name[2] = 'm';
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name[3] = regno - 21 + '0';
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namelen = 4;
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break;
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case 29 ... 36:
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name[0] = 'm';
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name[1] = 'm';
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name[2] = regno - 29 + '0';
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namelen = 3;
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break;
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case 37:
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*bits = 16;
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return stpcpy (name, "fctrl") + 1 - name;
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case 38:
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*bits = 16;
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return stpcpy (name, "fstat") + 1 - name;
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case 39:
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return stpcpy (name, "mxcsr") + 1 - name;
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case 40 ... 45:
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name[0] = "ecsdfg"[regno - 40];
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name[1] = 's';
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namelen = 2;
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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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