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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [config/] [i386/] [tm-symmetry.h] - Blame information for rev 106

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1 106 markom
/* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0,
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   with Weitek 1167 and i387 support.
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   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
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   Free Software Foundation, Inc.
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   Symmetry version by Jay Vosburgh (fubar@sequent.com).
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#ifndef TM_SYMMETRY_H
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#define TM_SYMMETRY_H 1
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/* I don't know if this will work for cross-debugging, even if you do get
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   a copy of the right include file.  */
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#include <machine/reg.h>
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#include "i386/tm-i386v.h"
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#undef START_INFERIOR_TRAPS_EXPECTED
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#define START_INFERIOR_TRAPS_EXPECTED 2
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/* Amount PC must be decremented by after a breakpoint.  This is often the
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   number of bytes in BREAKPOINT but not always (such as now). */
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#undef DECR_PC_AFTER_BREAK
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#define DECR_PC_AFTER_BREAK 0
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#if 0
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/* --- this code can't be used unless we know we are running native,
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   since it uses host specific ptrace calls. */
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/* code for 80387 fpu.  Functions are from i386-dep.c, copied into
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 * symm-dep.c.
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 */
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#define FLOAT_INFO { i386_float_info(); }
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#endif
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/* Number of machine registers */
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#undef NUM_REGS
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#define NUM_REGS 49
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/* Initializer for an array of names of registers.
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   There should be NUM_REGS strings in this initializer.  */
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/* Initializer for an array of names of registers.  There should be at least
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   NUM_REGS strings in this initializer.  Any excess ones are simply ignored.
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   Symmetry registers are in this weird order to match the register numbers
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   in the symbol table entries.  If you change the order, things will probably
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   break mysteriously for no apparent reason.  Also note that the st(0)...
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   st(7) 387 registers are represented as st0...st7.  */
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#undef  REGISTER_NAMES
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#define REGISTER_NAMES {     "eax",  "edx",  "ecx",   "st0",  "st1", \
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                             "ebx",  "esi",  "edi",   "st2",  "st3", \
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                             "st4",  "st5",  "st6",   "st7",  "esp", \
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                             "ebp",  "eip",  "eflags","fp1",  "fp2", \
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                             "fp3",  "fp4",  "fp5",   "fp6",  "fp7", \
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                             "fp8",  "fp9",  "fp10",  "fp11", "fp12", \
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                             "fp13", "fp14", "fp15",  "fp16", "fp17", \
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                             "fp18", "fp19", "fp20",  "fp21", "fp22", \
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                             "fp23", "fp24", "fp25",  "fp26", "fp27", \
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                             "fp28", "fp29", "fp30",  "fp31" }
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/* Register numbers of various important registers.
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   Note that some of these values are "real" register numbers,
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   and correspond to the general registers of the machine,
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   and some are "phony" register numbers which are too large
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   to be actual register numbers as far as the user is concerned
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   but do serve to get the desired values when passed to read_register.  */
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#define EAX_REGNUM      0
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#define EDX_REGNUM      1
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#define ECX_REGNUM      2
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#define ST0_REGNUM      3
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#define ST1_REGNUM      4
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#define EBX_REGNUM      5
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#define ESI_REGNUM      6
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#define EDI_REGNUM      7
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#define ST2_REGNUM      8
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#define ST3_REGNUM      9
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#define ST4_REGNUM      10
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#define ST5_REGNUM      11
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#define ST6_REGNUM      12
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#define ST7_REGNUM      13
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#define FP1_REGNUM 18           /* first 1167 register */
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/* Get %fp2 - %fp31 by addition, since they are contiguous */
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#undef  SP_REGNUM
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#define SP_REGNUM 14            /* (usp) Contains address of top of stack */
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#define ESP_REGNUM 14
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#undef  FP_REGNUM
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#define FP_REGNUM 15            /* (ebp) Contains address of executing stack frame */
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#define EBP_REGNUM 15
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#undef  PC_REGNUM
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#define PC_REGNUM 16            /* (eip) Contains program counter */
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#define EIP_REGNUM 16
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#undef  PS_REGNUM
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#define PS_REGNUM 17            /* (ps)  Contains processor status */
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#define EFLAGS_REGNUM 17
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/*
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 * Following macro translates i386 opcode register numbers to Symmetry
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 * register numbers.  This is used by i386_frame_find_saved_regs.
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 *
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 *           %eax  %ecx  %edx  %ebx  %esp  %ebp  %esi  %edi
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 * i386        0     1     2     3     4     5     6     7
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 * Symmetry    0     2     1     5    14    15     6     7
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 *
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 */
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#define I386_REGNO_TO_SYMMETRY(n) \
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((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n))
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129
/* The magic numbers below are offsets into u_ar0 in the user struct.
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 * They live in <machine/reg.h>.  Gdb calls this macro with blockend
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 * holding u.u_ar0 - KERNEL_U_ADDR.  Only the registers listed are
132
 * saved in the u area (along with a few others that aren't useful
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 * here.  See <machine/reg.h>).
134
 */
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136
#define REGISTER_U_ADDR(addr, blockend, regno) \
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{ struct user foo;      /* needed for finding fpu regs */ \
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switch (regno) { \
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    case 0: \
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      addr = blockend + EAX * sizeof(int); break; \
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  case 1: \
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      addr = blockend + EDX * sizeof(int); break; \
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  case 2: \
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      addr = blockend + ECX * sizeof(int); break; \
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  case 3:                       /* st(0) */ \
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      addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
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      break; \
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  case 4:                       /* st(1) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
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      break; \
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  case 5: \
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      addr = blockend + EBX * sizeof(int); break; \
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  case 6: \
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      addr = blockend + ESI * sizeof(int); break; \
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  case 7: \
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      addr = blockend + EDI * sizeof(int); break; \
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  case 8:                       /* st(2) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
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      break; \
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  case 9:                       /* st(3) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
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      break; \
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  case 10:                      /* st(4) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
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      break; \
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  case 11:                      /* st(5) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
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      break; \
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  case 12:                      /* st(6) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
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      break; \
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  case 13:                      /* st(7) */ \
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      addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
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      break; \
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  case 14: \
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      addr = blockend + ESP * sizeof(int); break; \
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  case 15: \
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      addr = blockend + EBP * sizeof(int); break; \
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  case 16: \
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      addr = blockend + EIP * sizeof(int); break; \
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  case 17: \
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      addr = blockend + FLAGS * sizeof(int); break; \
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  case 18:                      /* fp1 */ \
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  case 19:                      /* fp2 */ \
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  case 20:                      /* fp3 */ \
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  case 21:                      /* fp4 */ \
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  case 22:                      /* fp5 */ \
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  case 23:                      /* fp6 */ \
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  case 24:                      /* fp7 */ \
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  case 25:                      /* fp8 */ \
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  case 26:                      /* fp9 */ \
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  case 27:                      /* fp10 */ \
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  case 28:                      /* fp11 */ \
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  case 29:                      /* fp12 */ \
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  case 30:                      /* fp13 */ \
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  case 31:                      /* fp14 */ \
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  case 32:                      /* fp15 */ \
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  case 33:                      /* fp16 */ \
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  case 34:                      /* fp17 */ \
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  case 35:                      /* fp18 */ \
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  case 36:                      /* fp19 */ \
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  case 37:                      /* fp20 */ \
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  case 38:                      /* fp21 */ \
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  case 39:                      /* fp22 */ \
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  case 40:                      /* fp23 */ \
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  case 41:                      /* fp24 */ \
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  case 42:                      /* fp25 */ \
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  case 43:                      /* fp26 */ \
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  case 44:                      /* fp27 */ \
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  case 45:                      /* fp28 */ \
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  case 46:                      /* fp29 */ \
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  case 47:                      /* fp30 */ \
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  case 48:                      /* fp31 */ \
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     addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
215
  } \
216
}
217
 
218
/* Total amount of space needed to store our copies of the machine's
219
   register state, the array `registers'.  10 i*86 registers, 8 i387
220
   registers, and 31 Weitek 1167 registers */
221
 
222
#undef  REGISTER_BYTES
223
#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
224
 
225
/* Index within `registers' of the first byte of the space for
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   register N.  */
227
 
228
#undef  REGISTER_BYTE
229
#define REGISTER_BYTE(N)                \
230
(((N) < 3) ? ((N) * 4) :                \
231
((N) < 5) ? ((((N) - 2) * 10) + 2) :    \
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((N) < 8) ? ((((N) - 5) * 4) + 32) :    \
233
((N) < 14) ? ((((N) - 8) * 10) + 44) :  \
234
    ((((N) - 14) * 4) + 104))
235
 
236
/* Number of bytes of storage in the actual machine representation
237
 * for register N.  All registers are 4 bytes, except 387 st(0) - st(7),
238
 * which are 80 bits each.
239
 */
240
 
241
#undef  REGISTER_RAW_SIZE
242
#define REGISTER_RAW_SIZE(N) \
243
(((N) < 3) ? 4 :        \
244
((N) < 5) ? 10 :        \
245
((N) < 8) ? 4 :         \
246
((N) < 14) ? 10 :       \
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    4)
248
 
249
/* Nonzero if register N requires conversion
250
   from raw format to virtual format.  */
251
 
252
#undef  REGISTER_CONVERTIBLE
253
#define REGISTER_CONVERTIBLE(N) \
254
(((N) < 3) ? 0 : \
255
((N) < 5) ? 1  : \
256
((N) < 8) ? 0  : \
257
((N) < 14) ? 1 : \
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    0)
259
 
260
#include "floatformat.h"
261
 
262
/* Convert data from raw format for register REGNUM in buffer FROM
263
   to virtual format with type TYPE in buffer TO.  */
264
 
265
#undef REGISTER_CONVERT_TO_VIRTUAL
266
#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
267
{ \
268
  double val; \
269
  floatformat_to_double (&floatformat_i387_ext, (FROM), &val); \
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  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
271
}
272
 
273
/* Convert data from virtual format with type TYPE in buffer FROM
274
   to raw format for register REGNUM in buffer TO.  */
275
 
276
#undef REGISTER_CONVERT_TO_RAW
277
#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
278
{ \
279
  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
280
  floatformat_from_double (&floatformat_i387_ext, &val, (TO)); \
281
}
282
 
283
/* Return the GDB type object for the "standard" data type
284
   of data in register N.  */
285
 
286
#undef REGISTER_VIRTUAL_TYPE
287
#define REGISTER_VIRTUAL_TYPE(N) \
288
((N < 3) ? builtin_type_int : \
289
(N < 5) ? builtin_type_double : \
290
(N < 8) ? builtin_type_int : \
291
(N < 14) ? builtin_type_double : \
292
    builtin_type_int)
293
 
294
/* Store the address of the place in which to copy the structure the
295
   subroutine will return.  This is called from call_function.
296
   Native cc passes the address in eax, gcc (up to version 2.5.8)
297
   passes it on the stack.  gcc should be fixed in future versions to
298
   adopt native cc conventions.  */
299
 
300
#undef  STORE_STRUCT_RETURN
301
#define STORE_STRUCT_RETURN(ADDR, SP) write_register(0, (ADDR))
302
 
303
/* Extract from an array REGBUF containing the (raw) register state
304
   a function return value of type TYPE, and copy that, in virtual format,
305
   into VALBUF.  */
306
 
307
#undef  EXTRACT_RETURN_VALUE
308
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
309
  symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
310
 
311
/* The following redefines make backtracing through sigtramp work.
312
   They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
313
   from the sigcontext structure which is pushed by the kernel on the
314
   user stack, along with a pointer to it.  */
315
 
316
#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name))
317
 
318
/* Offset to saved PC in sigcontext, from <signal.h>.  */
319
#define SIGCONTEXT_PC_OFFSET 16
320
 
321
#endif /* ifndef TM_SYMMETRY_H */

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