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diff --git a/gdb/config/i386/tm-ptx.h b/gdb/config/i386/tm-ptx.h
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+/* Target machine definitions for GDB on a Sequent Symmetry under ptx
+   with Weitek 1167 and i387 support.
+   Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+   Symmetry version by Jay Vosburgh (fubar@sequent.com).
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#ifndef TM_PTX_H
+#define TM_PTX_H 1
+
+/* I don't know if this will work for cross-debugging, even if you do get
+   a copy of the right include file.  */
+
+#include <sys/reg.h>
+
+#ifdef SEQUENT_PTX4
+#include "i386/tm-i386v4.h"
+#else /* !SEQUENT_PTX4 */
+#include "i386/tm-i386v.h"
+#endif
+
+/* Number of traps that happen between exec'ing the shell to run an
+   inferior, and when we finally get to the inferior code.  This is 2
+   on most implementations. Here we have to undo what tm-i386v.h gave
+   us and restore the default. */
+
+#undef START_INFERIOR_TRAPS_EXPECTED
+#define START_INFERIOR_TRAPS_EXPECTED 2
+
+/* Amount PC must be decremented by after a breakpoint.  This is often the
+   number of bytes in BREAKPOINT but not always (such as now). */
+
+#undef DECR_PC_AFTER_BREAK
+#define DECR_PC_AFTER_BREAK 0
+
+#if 0
+ --- this code can't be used unless we know we are running native,
+     since it uses host specific ptrace calls.
+/* code for 80387 fpu.  Functions are from i386-dep.c, copied into
+ * symm-dep.c.
+ */
+#define FLOAT_INFO { i386_float_info(); }
+#endif
+
+/* Number of machine registers */
+
+#undef  NUM_REGS
+#define NUM_REGS 49
+
+/* Initializer for an array of names of registers.  There should be at least
+   NUM_REGS strings in this initializer.  Any excess ones are simply ignored.
+   The order of the first 8 registers must match the compiler's numbering
+   scheme (which is the same as the 386 scheme) and also regmap in the various
+   *-nat.c files. */
+
+#undef  REGISTER_NAMES
+#define REGISTER_NAMES { "eax",  "ecx",    "edx",  "ebx",  \
+			 "esp",  "ebp",    "esi",  "edi",  \
+			 "eip",  "eflags", "st0",  "st1",  \
+			 "st2",  "st3",    "st4",  "st5",  \
+			 "st6",  "st7",    "fp1",  "fp2",  \
+			 "fp3",  "fp4",    "fp5",  "fp6",  \
+			 "fp7",  "fp8",    "fp9",  "fp10", \
+			 "fp11", "fp12",   "fp13", "fp14", \
+			 "fp15", "fp16",   "fp17", "fp18", \
+			 "fp19", "fp20",   "fp21", "fp22", \
+			 "fp23", "fp24",   "fp25", "fp26", \
+			 "fp27", "fp28",   "fp29", "fp30", \
+			 "fp31" }
+
+/* Register numbers of various important registers.
+   Note that some of these values are "real" register numbers,
+   and correspond to the general registers of the machine,
+   and some are "phony" register numbers which are too large
+   to be actual register numbers as far as the user is concerned
+   but do serve to get the desired values when passed to read_register.  */
+
+#define EAX_REGNUM	0
+#define ECX_REGNUM	1
+#define EDX_REGNUM	2
+#define EBX_REGNUM	3
+
+#define ESP_REGNUM	4
+#define EBP_REGNUM	5
+
+#define ESI_REGNUM	6
+#define EDI_REGNUM	7
+
+#define EIP_REGNUM	8
+#define EFLAGS_REGNUM	9
+
+#define ST0_REGNUM	10
+#define ST1_REGNUM	11
+#define ST2_REGNUM	12
+#define ST3_REGNUM	13
+
+#define ST4_REGNUM	14
+#define ST5_REGNUM	15
+#define ST6_REGNUM	16
+#define ST7_REGNUM	17
+
+#define FP1_REGNUM 18		/* first 1167 register */
+/* Get %fp2 - %fp31 by addition, since they are contiguous */
+
+#undef  SP_REGNUM
+#define SP_REGNUM ESP_REGNUM	/* Contains address of top of stack */
+#undef  FP_REGNUM
+#define FP_REGNUM EBP_REGNUM	/* Contains address of executing stack frame */
+#undef  PC_REGNUM
+#define PC_REGNUM EIP_REGNUM	/* Contains program counter */
+#undef  PS_REGNUM
+#define PS_REGNUM EFLAGS_REGNUM	/* Contains processor status */
+
+/*
+ * For ptx, this is a little bit bizarre, since the register block
+ * is below the u area in memory.  This means that blockend here ends
+ * up being negative (for the call from coredep.c) since the value in
+ * u.u_ar0 will be less than KERNEL_U_ADDR (and coredep.c passes us
+ * u.u_ar0 - KERNEL_U_ADDR in blockend).  Since we also define
+ * FETCH_INFERIOR_REGISTERS (and supply our own functions for that),
+ * the core file case will be the only use of this function.
+ */
+
+#define REGISTER_U_ADDR(addr, blockend, regno) \
+{ (addr) = ptx_register_u_addr((blockend), (regno)); }
+
+extern int
+ptx_register_u_addr PARAMS ((int, int));
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  10 i*86 registers, 8 i387
+   registers, and 31 Weitek 1167 registers */
+
+#undef  REGISTER_BYTES
+#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
+
+/* Index within `registers' of the first byte of the space for register N. */
+
+#undef  REGISTER_BYTE
+#define REGISTER_BYTE(N) 		\
+(((N) < ST0_REGNUM) ? ((N) * 4) : \
+ ((N) < FP1_REGNUM) ? (40 + (((N) - ST0_REGNUM) * 10)) : \
+ (40 + 80 + (((N) - FP1_REGNUM) * 4)))
+
+/* Number of bytes of storage in the actual machine representation for
+   register N.  All registers are 4 bytes, except 387 st(0) - st(7),
+   which are 80 bits each. */
+
+#undef  REGISTER_RAW_SIZE
+#define REGISTER_RAW_SIZE(N) \
+(((N) < ST0_REGNUM) ? 4 : \
+ ((N) < FP1_REGNUM) ? 10 : \
+ 4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#undef  MAX_REGISTER_RAW_SIZE
+#define MAX_REGISTER_RAW_SIZE 10
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#undef REGISTER_CONVERTIBLE
+#define REGISTER_CONVERTIBLE(N) \
+((N < ST0_REGNUM) ? 0 : \
+ (N < FP1_REGNUM) ? 1 : \
+ 0)
+  
+/* Convert data from raw format for register REGNUM
+   to virtual format for register REGNUM.  */
+extern const struct floatformat floatformat_i387_ext; /* from floatformat.h */
+
+#undef REGISTER_CONVERT_TO_VIRTUAL
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO)	\
+((REGNUM < ST0_REGNUM) ?  (void)memcpy ((TO), (FROM), 4) : \
+ (REGNUM < FP1_REGNUM) ? (void)floatformat_to_double(&floatformat_i387_ext, \
+						       (FROM),(TO)) : \
+ (void)memcpy ((TO), (FROM), 4))
+ 
+/* Convert data from virtual format for register REGNUM
+   to raw format for register REGNUM.  */
+
+#undef REGISTER_CONVERT_TO_RAW
+#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO)	\
+((REGNUM < ST0_REGNUM) ?  (void)memcpy ((TO), (FROM), 4) : \
+ (REGNUM < FP1_REGNUM) ? (void)floatformat_from_double(&floatformat_i387_ext, \
+						       (FROM),(TO)) : \
+ (void)memcpy ((TO), (FROM), 4))
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+/*
+ * Note: the 1167 registers (the last line, builtin_type_float) are
+ * generally used in pairs, with each pair being treated as a double.
+ * It it also possible to use them singly as floats.  I'm not sure how
+ * in gdb to treat the register pair pseudo-doubles. -fubar
+ */
+#undef REGISTER_VIRTUAL_TYPE
+#define REGISTER_VIRTUAL_TYPE(N) \
+((N < ST0_REGNUM) ? builtin_type_int : \
+ (N < FP1_REGNUM) ? builtin_type_double : \
+ builtin_type_float)
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+#undef  EXTRACT_RETURN_VALUE
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
+  symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
+
+/*
+#undef  FRAME_FIND_SAVED_REGS
+#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
+{ ptx_frame_find_saved_regs((frame_info), &(frame_saved_regs)); }
+*/
+
+#endif  /* ifndef TM_PTX_H */