233 lines
7.7 KiB
C
233 lines
7.7 KiB
C
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/* Target machine definitions for GDB on a Sequent Symmetry under ptx
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with Weitek 1167 and i387 support.
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Copyright 1986, 1987, 1989, 1991, 1992, 1993 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, Boston, MA 02111-1307, USA. */
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#ifndef TM_PTX_H
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#define TM_PTX_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 <sys/reg.h>
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#ifdef SEQUENT_PTX4
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#include "i386/tm-i386v4.h"
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#else /* !SEQUENT_PTX4 */
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#include "i386/tm-i386v.h"
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#endif
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/* Number of traps that happen between exec'ing the shell to run an
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inferior, and when we finally get to the inferior code. This is 2
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on most implementations. Here we have to undo what tm-i386v.h gave
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us and restore the default. */
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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. 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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The order of the first 8 registers must match the compiler's numbering
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scheme (which is the same as the 386 scheme) and also regmap in the various
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*-nat.c files. */
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#undef REGISTER_NAMES
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#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
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"esp", "ebp", "esi", "edi", \
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"eip", "eflags", "st0", "st1", \
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"st2", "st3", "st4", "st5", \
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"st6", "st7", "fp1", "fp2", \
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"fp3", "fp4", "fp5", "fp6", \
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"fp7", "fp8", "fp9", "fp10", \
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"fp11", "fp12", "fp13", "fp14", \
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"fp15", "fp16", "fp17", "fp18", \
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"fp19", "fp20", "fp21", "fp22", \
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"fp23", "fp24", "fp25", "fp26", \
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"fp27", "fp28", "fp29", "fp30", \
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"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 ECX_REGNUM 1
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#define EDX_REGNUM 2
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#define EBX_REGNUM 3
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#define ESP_REGNUM 4
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#define EBP_REGNUM 5
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#define ESI_REGNUM 6
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#define EDI_REGNUM 7
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#define EIP_REGNUM 8
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#define EFLAGS_REGNUM 9
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#define ST0_REGNUM 10
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#define ST1_REGNUM 11
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#define ST2_REGNUM 12
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#define ST3_REGNUM 13
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#define ST4_REGNUM 14
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#define ST5_REGNUM 15
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#define ST6_REGNUM 16
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#define ST7_REGNUM 17
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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 ESP_REGNUM /* Contains address of top of stack */
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#undef FP_REGNUM
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#define FP_REGNUM EBP_REGNUM /* Contains address of executing stack frame */
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#undef PC_REGNUM
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#define PC_REGNUM EIP_REGNUM /* Contains program counter */
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#undef PS_REGNUM
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#define PS_REGNUM EFLAGS_REGNUM /* Contains processor status */
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/*
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* For ptx, this is a little bit bizarre, since the register block
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* is below the u area in memory. This means that blockend here ends
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* up being negative (for the call from coredep.c) since the value in
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* u.u_ar0 will be less than KERNEL_U_ADDR (and coredep.c passes us
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* u.u_ar0 - KERNEL_U_ADDR in blockend). Since we also define
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* FETCH_INFERIOR_REGISTERS (and supply our own functions for that),
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* the core file case will be the only use of this function.
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*/
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#define REGISTER_U_ADDR(addr, blockend, regno) \
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{ (addr) = ptx_register_u_addr((blockend), (regno)); }
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extern int
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ptx_register_u_addr PARAMS ((int, int));
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/* Total amount of space needed to store our copies of the machine's
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register state, the array `registers'. 10 i*86 registers, 8 i387
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registers, and 31 Weitek 1167 registers */
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#undef REGISTER_BYTES
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#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
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/* Index within `registers' of the first byte of the space for register N. */
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#undef REGISTER_BYTE
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#define REGISTER_BYTE(N) \
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(((N) < ST0_REGNUM) ? ((N) * 4) : \
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((N) < FP1_REGNUM) ? (40 + (((N) - ST0_REGNUM) * 10)) : \
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(40 + 80 + (((N) - FP1_REGNUM) * 4)))
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/* Number of bytes of storage in the actual machine representation for
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register N. All registers are 4 bytes, except 387 st(0) - st(7),
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which are 80 bits each. */
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#undef REGISTER_RAW_SIZE
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#define REGISTER_RAW_SIZE(N) \
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(((N) < ST0_REGNUM) ? 4 : \
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((N) < FP1_REGNUM) ? 10 : \
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4)
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/* Largest value REGISTER_RAW_SIZE can have. */
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#undef MAX_REGISTER_RAW_SIZE
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#define MAX_REGISTER_RAW_SIZE 10
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/* Nonzero if register N requires conversion
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from raw format to virtual format. */
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#undef REGISTER_CONVERTIBLE
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#define REGISTER_CONVERTIBLE(N) \
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((N < ST0_REGNUM) ? 0 : \
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(N < FP1_REGNUM) ? 1 : \
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0)
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/* Convert data from raw format for register REGNUM
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to virtual format for register REGNUM. */
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extern const struct floatformat floatformat_i387_ext; /* from floatformat.h */
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#undef REGISTER_CONVERT_TO_VIRTUAL
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#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
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((REGNUM < ST0_REGNUM) ? (void)memcpy ((TO), (FROM), 4) : \
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(REGNUM < FP1_REGNUM) ? (void)floatformat_to_double(&floatformat_i387_ext, \
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(FROM),(TO)) : \
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(void)memcpy ((TO), (FROM), 4))
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/* Convert data from virtual format for register REGNUM
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to raw format for register REGNUM. */
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#undef REGISTER_CONVERT_TO_RAW
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#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
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((REGNUM < ST0_REGNUM) ? (void)memcpy ((TO), (FROM), 4) : \
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(REGNUM < FP1_REGNUM) ? (void)floatformat_from_double(&floatformat_i387_ext, \
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(FROM),(TO)) : \
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(void)memcpy ((TO), (FROM), 4))
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/* Return the GDB type object for the "standard" data type
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of data in register N. */
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/*
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* Note: the 1167 registers (the last line, builtin_type_float) are
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* generally used in pairs, with each pair being treated as a double.
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* It it also possible to use them singly as floats. I'm not sure how
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* in gdb to treat the register pair pseudo-doubles. -fubar
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*/
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#undef REGISTER_VIRTUAL_TYPE
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#define REGISTER_VIRTUAL_TYPE(N) \
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((N < ST0_REGNUM) ? builtin_type_int : \
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(N < FP1_REGNUM) ? builtin_type_double : \
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builtin_type_float)
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/* Extract from an array REGBUF containing the (raw) register state
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a function return value of type TYPE, and copy that, in virtual format,
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into VALBUF. */
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#undef EXTRACT_RETURN_VALUE
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
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/*
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#undef FRAME_FIND_SAVED_REGS
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#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
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{ ptx_frame_find_saved_regs((frame_info), &(frame_saved_regs)); }
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*/
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#endif /* ifndef TM_PTX_H */
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