[deliverable/binutils-gdb.git] / gdb / config / i386 / tm-symmetry.h

/* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0,
   with Weitek 1167 and i387 support.
   Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
   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.  */

/* I don't know if this will work for cross-debugging, even if you do get
   a copy of the right include file.  */
#include <machine/reg.h>

#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.  */

#define DECR_PC_AFTER_BREAK 0

#include "i386/tm-i386v.h"

#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 NUM_REGS strings in this initializer.  */

/* Symmetry registers are in this weird order to match the register
   numbers in the symbol table entries.  If you change the order,
   things will probably break mysteriously for no apparent reason.
   Also note that the st(0)...st(7) 387 registers are represented as
   st0...st7.  */

#undef REGISTER_NAMES
#define REGISTER_NAMES { "eax", "edx", "ecx", "st0", "st1", \
			     "ebx", "esi", "edi", "st2", "st3", \
			     "st4", "st5", "st6", "st7", "esp", \
			     "ebp", "eip", "eflags", "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 EDX_REGNUM	1
#define ECX_REGNUM	2
#define ST0_REGNUM	3
#define ST1_REGNUM	4
#define EBX_REGNUM	5
#define ESI_REGNUM	6
#define EDI_REGNUM	7
#define ST2_REGNUM	8
#define ST3_REGNUM	9

#define ST4_REGNUM	10
#define ST5_REGNUM	11
#define ST6_REGNUM	12
#define ST7_REGNUM	13

#define FP1_REGNUM 18		/* first 1167 register */
/* Get %fp2 - %fp31 by addition, since they are contiguous */

#undef SP_REGNUM
#define SP_REGNUM 14		/* esp--Contains address of top of stack */
#define ESP_REGNUM 14
#undef FP_REGNUM
#define FP_REGNUM 15   /* ebp--Contains address of executing stack frame */
#define EBP_REGNUM 15
#undef PC_REGNUM
#define PC_REGNUM 16		/* eip--Contains program counter */
#define EIP_REGNUM 16
#undef PS_REGNUM
#define PS_REGNUM 17		/* eflags--Contains processor status */
#define EFLAGS_REGNUM 17

/*
 * Following macro translates i386 opcode register numbers to Symmetry
 * register numbers.  This is used by i386_frame_find_saved_regs.
 *
 *           %eax  %ecx  %edx  %ebx  %esp  %ebp  %esi  %edi
 * i386        0     1     2     3     4     5     6     7
 * Symmetry    0     2     1     5    14    15     6     7
 *
 */
#define I386_REGNO_TO_SYMMETRY(n) \
((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n))

/* The magic numbers below are offsets into u_ar0 in the user struct.
 * They live in <machine/reg.h>.  Gdb calls this macro with blockend
 * holding u.u_ar0 - KERNEL_U_ADDR.  Only the registers listed are
 * saved in the u area (along with a few others that aren't useful
 * here.  See <machine/reg.h>).
 */

#define REGISTER_U_ADDR(addr, blockend, regno) \
{ struct user foo;	/* needed for finding fpu regs */ \
switch (regno) { \
    case 0: \
      addr = blockend + EAX * sizeof(int); break; \
  case 1: \
      addr = blockend + EDX * sizeof(int); break; \
  case 2: \
      addr = blockend + ECX * sizeof(int); break; \
  case 3:			/* st(0) */ \
      addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
      break; \
  case 4:			/* st(1) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
      break; \
  case 5: \
      addr = blockend + EBX * sizeof(int); break; \
  case 6: \
      addr = blockend + ESI * sizeof(int); break; \
  case 7: \
      addr = blockend + EDI * sizeof(int); break; \
  case 8:			/* st(2) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
      break; \
  case 9:			/* st(3) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
      break; \
  case 10:			/* st(4) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
      break; \
  case 11:			/* st(5) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
      break; \
  case 12:			/* st(6) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
      break; \
  case 13:			/* st(7) */ \
      addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
      break; \
  case 14: \
      addr = blockend + ESP * sizeof(int); break; \
  case 15: \
      addr = blockend + EBP * sizeof(int); break; \
  case 16: \
      addr = blockend + EIP * sizeof(int); break; \
  case 17: \
      addr = blockend + FLAGS * sizeof(int); break; \
  case 18:			/* fp1 */ \
  case 19:			/* fp2 */ \
  case 20:			/* fp3 */ \
  case 21:			/* fp4 */ \
  case 22:			/* fp5 */ \
  case 23:			/* fp6 */ \
  case 24:			/* fp7 */ \
  case 25:			/* fp8 */ \
  case 26:			/* fp9 */ \
  case 27:			/* fp10 */ \
  case 28:			/* fp11 */ \
  case 29:			/* fp12 */ \
  case 30:			/* fp13 */ \
  case 31:			/* fp14 */ \
  case 32:			/* fp15 */ \
  case 33:			/* fp16 */ \
  case 34:			/* fp17 */ \
  case 35:			/* fp18 */ \
  case 36:			/* fp19 */ \
  case 37:			/* fp20 */ \
  case 38:			/* fp21 */ \
  case 39:			/* fp22 */ \
  case 40:			/* fp23 */ \
  case 41:			/* fp24 */ \
  case 42:			/* fp25 */ \
  case 43:			/* fp26 */ \
  case 44:			/* fp27 */ \
  case 45:			/* fp28 */ \
  case 46:			/* fp29 */ \
  case 47:			/* fp30 */ \
  case 48:			/* fp31 */ \
     addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
  } \
}

/* Total amount of space needed to store our copies of the machine's
   register state, the array `registers'.  */
/* 10 i386 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 < 3) ? (N * 4) :			\
(N < 5) ? (((N - 2) * 10) + 2) :	\
(N < 8) ? (((N - 5) * 4) + 32) :	\
(N < 14) ? (((N - 8) * 10) + 44) :	\
    (((N - 14) * 4) + 104))

/* 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 < 3) ? 4 :	\
(N < 5) ? 10 :	\
(N < 8) ? 4 :	\
(N < 14) ? 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 < 3) ? 0 : \
(N < 5) ? 1  : \
(N < 8) ? 0  : \
(N < 14) ? 1 : \
    0)

#include "floatformat.h"

/* Convert data from raw format for register REGNUM in buffer FROM
   to virtual format with type TYPE in buffer TO.  */

#undef REGISTER_CONVERT_TO_VIRTUAL
#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
{ \
  double val; \
  floatformat_to_double (&floatformat_i387_ext, (FROM), &val); \
  store_floating ((TO), TYPE_LENGTH (TYPE), val); \
}

/* Convert data from virtual format with type TYPE in buffer FROM
   to raw format for register REGNUM in buffer TO.  */

#undef REGISTER_CONVERT_TO_RAW
#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
{ \
  double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
  floatformat_from_double (&floatformat_i387_ext, &val, (TO)); \
}

/* Return the GDB type object for the "standard" data type
   of data in register N.  */

#undef REGISTER_VIRTUAL_TYPE
#define REGISTER_VIRTUAL_TYPE(N) \
((N < 3) ? builtin_type_int : \
(N < 5) ? builtin_type_double : \
(N < 8) ? builtin_type_int : \
(N < 14) ? builtin_type_double : \
    builtin_type_int)

/* Store the address of the place in which to copy the structure the
   subroutine will return.  This is called from call_function.
   Native cc passes the address in eax, gcc (up to version 2.5.8)
   passes it on the stack.  gcc should be fixed in future versions to
   adopt native cc conventions.  */

#undef STORE_STRUCT_RETURN
#define STORE_STRUCT_RETURN(ADDR, SP) write_register(0, (ADDR))

/* 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)

\f
extern void
print_387_control_word PARAMS ((unsigned int));

extern void
print_387_status_word PARAMS ((unsigned int));

/* The following redefines make backtracing through sigtramp work.
   They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
   from the sigcontext structure which is pushed by the kernel on the
   user stack, along with a pointer to it.  */

#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name))

/* Offset to saved PC in sigcontext, from <signal.h>.  */
#define SIGCONTEXT_PC_OFFSET 16

/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
   chain-pointer.
   In the case of the i386, the frame's nominal address
   is the address of a 4-byte word containing the calling frame's address.  */
#undef FRAME_CHAIN
#define FRAME_CHAIN(thisframe)  \
  (thisframe->signal_handler_caller \
   ? thisframe->frame \
   : (!inside_entry_file ((thisframe)->pc) \
      ? read_memory_integer ((thisframe)->frame, 4) \
      : 0))

/* A macro that tells us whether the function invocation represented
   by FI does not have a frame on the stack associated with it.  If it
   does not, FRAMELESS is set to 1, else 0.  */
#undef FRAMELESS_FUNCTION_INVOCATION
#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
  do { \
    if ((FI)->signal_handler_caller) \
      (FRAMELESS) = 0; \
    else \
      (FRAMELESS) = frameless_look_for_prologue(FI); \
  } while (0)

/* Saved Pc.  Get it from sigcontext if within sigtramp.  */

#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(FRAME) \
  (((FRAME)->signal_handler_caller \
    ? sigtramp_saved_pc (FRAME) \
    : read_memory_integer ((FRAME)->frame + 4, 4)) \
   )
Commit	Line	Data
5076de82 FF	1	/* Target machine definitions for GDB on a Sequent Symmetry under dynix 3.0,
5076de82 FF	2	with Weitek 1167 and i387 support.
8a19fe21 PS	3	Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994
8a19fe21 PS	4	Free Software Foundation, Inc.
56eec3c7	5	Symmetry version by Jay Vosburgh (fubar@sequent.com).
5076de82 FF	6
	7	This file is part of GDB.
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; if not, write to the Free Software
6c9638b4	21	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
5076de82 FF	22
	23	/* I don't know if this will work for cross-debugging, even if you do get
	24	a copy of the right include file. */
	25	#include <machine/reg.h>
5076de82	26
56eec3c7	27	#define START_INFERIOR_TRAPS_EXPECTED 2
5076de82 FF	28
	29	/* Amount PC must be decremented by after a breakpoint.
	30	This is often the number of bytes in BREAKPOINT
	31	but not always. */
	32
	33	#define DECR_PC_AFTER_BREAK 0
	34
56eec3c7 JK	35	#include "i386/tm-i386v.h"
56eec3c7 JK	36
5076de82	37	#if 0
388f4919 PS	38	/* --- this code can't be used unless we know we are running native,
388f4919 PS	39	since it uses host specific ptrace calls. */
5076de82 FF	40	/* code for 80387 fpu. Functions are from i386-dep.c, copied into
	41	* symm-dep.c.
	42	*/
	43	#define FLOAT_INFO { i386_float_info(); }
	44	#endif
	45
5076de82	46	/* Number of machine registers */
56eec3c7	47	#undef NUM_REGS
5076de82 FF	48	#define NUM_REGS 49
	49
	50	/* Initializer for an array of names of registers.
	51	There should be NUM_REGS strings in this initializer. */
	52
	53	/* Symmetry registers are in this weird order to match the register
	54	numbers in the symbol table entries. If you change the order,
	55	things will probably break mysteriously for no apparent reason.
	56	Also note that the st(0)...st(7) 387 registers are represented as
	57	st0...st7. */
	58
56eec3c7	59	#undef REGISTER_NAMES
5076de82 FF	60	#define REGISTER_NAMES { "eax", "edx", "ecx", "st0", "st1", \
	61	"ebx", "esi", "edi", "st2", "st3", \
	62	"st4", "st5", "st6", "st7", "esp", \
	63	"ebp", "eip", "eflags", "fp1", "fp2", \
	64	"fp3", "fp4", "fp5", "fp6", "fp7", \
	65	"fp8", "fp9", "fp10", "fp11", "fp12", \
	66	"fp13", "fp14", "fp15", "fp16", "fp17", \
	67	"fp18", "fp19", "fp20", "fp21", "fp22", \
	68	"fp23", "fp24", "fp25", "fp26", "fp27", \
	69	"fp28", "fp29", "fp30", "fp31" }
	70
	71	/* Register numbers of various important registers.
	72	Note that some of these values are "real" register numbers,
	73	and correspond to the general registers of the machine,
	74	and some are "phony" register numbers which are too large
	75	to be actual register numbers as far as the user is concerned
	76	but do serve to get the desired values when passed to read_register. */
	77
56eec3c7 JK	78	#define EAX_REGNUM 0
	79	#define EDX_REGNUM 1
	80	#define ECX_REGNUM 2
	81	#define ST0_REGNUM 3
	82	#define ST1_REGNUM 4
	83	#define EBX_REGNUM 5
	84	#define ESI_REGNUM 6
	85	#define EDI_REGNUM 7
	86	#define ST2_REGNUM 8
	87	#define ST3_REGNUM 9
	88
	89	#define ST4_REGNUM 10
	90	#define ST5_REGNUM 11
	91	#define ST6_REGNUM 12
	92	#define ST7_REGNUM 13
	93
5076de82	94	#define FP1_REGNUM 18 /* first 1167 register */
56eec3c7 JK	95	/* Get %fp2 - %fp31 by addition, since they are contiguous */
	96
	97	#undef SP_REGNUM
82a2edfb JK	98	#define SP_REGNUM 14 /* esp--Contains address of top of stack */
82a2edfb JK	99	#define ESP_REGNUM 14
56eec3c7	100	#undef FP_REGNUM
82a2edfb JK	101	#define FP_REGNUM 15 /* ebp--Contains address of executing stack frame */
82a2edfb JK	102	#define EBP_REGNUM 15
56eec3c7	103	#undef PC_REGNUM
82a2edfb JK	104	#define PC_REGNUM 16 /* eip--Contains program counter */
82a2edfb JK	105	#define EIP_REGNUM 16
56eec3c7	106	#undef PS_REGNUM
82a2edfb JK	107	#define PS_REGNUM 17 /* eflags--Contains processor status */
82a2edfb JK	108	#define EFLAGS_REGNUM 17
5076de82	109
8a19fe21 PS	110	/*
	111	* Following macro translates i386 opcode register numbers to Symmetry
	112	* register numbers. This is used by i386_frame_find_saved_regs.
	113	*
	114	* %eax %ecx %edx %ebx %esp %ebp %esi %edi
	115	* i386 0 1 2 3 4 5 6 7
	116	* Symmetry 0 2 1 5 14 15 6 7
	117	*
	118	*/
	119	#define I386_REGNO_TO_SYMMETRY(n) \
	120	((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n))
56eec3c7 JK	121
	122	/* The magic numbers below are offsets into u_ar0 in the user struct.
	123	* They live in <machine/reg.h>. Gdb calls this macro with blockend
	124	* holding u.u_ar0 - KERNEL_U_ADDR. Only the registers listed are
	125	* saved in the u area (along with a few others that aren't useful
	126	* here. See <machine/reg.h>).
	127	*/
	128
	129	#define REGISTER_U_ADDR(addr, blockend, regno) \
	130	{ struct user foo; /* needed for finding fpu regs */ \
	131	switch (regno) { \
	132	case 0: \
	133	addr = blockend + EAX * sizeof(int); break; \
	134	case 1: \
	135	addr = blockend + EDX * sizeof(int); break; \
	136	case 2: \
	137	addr = blockend + ECX * sizeof(int); break; \
	138	case 3: /* st(0) */ \
8a19fe21	139	addr = ((int)&foo.u_fpusave.fpu_stack[0][0] - (int)&foo); \
56eec3c7 JK	140	break; \
56eec3c7 JK	141	case 4: /* st(1) */ \
8a19fe21	142	addr = ((int) &foo.u_fpusave.fpu_stack[1][0] - (int)&foo); \
56eec3c7 JK	143	break; \
	144	case 5: \
	145	addr = blockend + EBX * sizeof(int); break; \
	146	case 6: \
	147	addr = blockend + ESI * sizeof(int); break; \
	148	case 7: \
	149	addr = blockend + EDI * sizeof(int); break; \
	150	case 8: /* st(2) */ \
8a19fe21	151	addr = ((int) &foo.u_fpusave.fpu_stack[2][0] - (int)&foo); \
56eec3c7 JK	152	break; \
56eec3c7 JK	153	case 9: /* st(3) */ \
8a19fe21	154	addr = ((int) &foo.u_fpusave.fpu_stack[3][0] - (int)&foo); \
56eec3c7 JK	155	break; \
56eec3c7 JK	156	case 10: /* st(4) */ \
8a19fe21	157	addr = ((int) &foo.u_fpusave.fpu_stack[4][0] - (int)&foo); \
56eec3c7 JK	158	break; \
56eec3c7 JK	159	case 11: /* st(5) */ \
8a19fe21	160	addr = ((int) &foo.u_fpusave.fpu_stack[5][0] - (int)&foo); \
56eec3c7 JK	161	break; \
56eec3c7 JK	162	case 12: /* st(6) */ \
8a19fe21	163	addr = ((int) &foo.u_fpusave.fpu_stack[6][0] - (int)&foo); \
56eec3c7 JK	164	break; \
56eec3c7 JK	165	case 13: /* st(7) */ \
8a19fe21	166	addr = ((int) &foo.u_fpusave.fpu_stack[7][0] - (int)&foo); \
56eec3c7 JK	167	break; \
	168	case 14: \
	169	addr = blockend + ESP * sizeof(int); break; \
	170	case 15: \
	171	addr = blockend + EBP * sizeof(int); break; \
	172	case 16: \
	173	addr = blockend + EIP * sizeof(int); break; \
	174	case 17: \
	175	addr = blockend + FLAGS * sizeof(int); break; \
	176	case 18: /* fp1 */ \
	177	case 19: /* fp2 */ \
	178	case 20: /* fp3 */ \
	179	case 21: /* fp4 */ \
	180	case 22: /* fp5 */ \
	181	case 23: /* fp6 */ \
	182	case 24: /* fp7 */ \
	183	case 25: /* fp8 */ \
	184	case 26: /* fp9 */ \
	185	case 27: /* fp10 */ \
	186	case 28: /* fp11 */ \
	187	case 29: /* fp12 */ \
	188	case 30: /* fp13 */ \
	189	case 31: /* fp14 */ \
	190	case 32: /* fp15 */ \
	191	case 33: /* fp16 */ \
	192	case 34: /* fp17 */ \
	193	case 35: /* fp18 */ \
	194	case 36: /* fp19 */ \
	195	case 37: /* fp20 */ \
	196	case 38: /* fp21 */ \
	197	case 39: /* fp22 */ \
	198	case 40: /* fp23 */ \
	199	case 41: /* fp24 */ \
	200	case 42: /* fp25 */ \
	201	case 43: /* fp26 */ \
	202	case 44: /* fp27 */ \
	203	case 45: /* fp28 */ \
	204	case 46: /* fp29 */ \
	205	case 47: /* fp30 */ \
	206	case 48: /* fp31 */ \
8a19fe21	207	addr = ((int) &foo.u_fpasave.fpa_regs[(regno)-18] - (int)&foo); \
82a2edfb JK	208	} \
82a2edfb JK	209	}
82a2edfb	210
5076de82 FF	211	/* Total amount of space needed to store our copies of the machine's
	212	register state, the array `registers'. */
	213	/* 10 i386 registers, 8 i387 registers, and 31 Weitek 1167 registers */
56eec3c7	214	#undef REGISTER_BYTES
5076de82 FF	215	#define REGISTER_BYTES ((10 * 4) + (8 * 10) + (31 * 4))
	216
	217	/* Index within `registers' of the first byte of the space for
	218	register N. */
	219
56eec3c7	220	#undef REGISTER_BYTE
5076de82 FF	221	#define REGISTER_BYTE(N) \
	222	((N < 3) ? (N * 4) : \
	223	(N < 5) ? (((N - 2) * 10) + 2) : \
	224	(N < 8) ? (((N - 5) * 4) + 32) : \
	225	(N < 14) ? (((N - 8) * 10) + 44) : \
	226	(((N - 14) * 4) + 104))
	227
	228	/* Number of bytes of storage in the actual machine representation
	229	* for register N. All registers are 4 bytes, except 387 st(0) - st(7),
	230	* which are 80 bits each.
	231	*/
	232
56eec3c7	233	#undef REGISTER_RAW_SIZE
5076de82 FF	234	#define REGISTER_RAW_SIZE(N) \
	235	((N < 3) ? 4 : \
	236	(N < 5) ? 10 : \
	237	(N < 8) ? 4 : \
	238	(N < 14) ? 10 : \
	239	4)
	240
5076de82 FF	241	/* Largest value REGISTER_RAW_SIZE can have. */
5076de82 FF	242
56eec3c7	243	#undef MAX_REGISTER_RAW_SIZE
5076de82 FF	244	#define MAX_REGISTER_RAW_SIZE 10
5076de82 FF	245
5076de82 FF	246	/* Nonzero if register N requires conversion
	247	from raw format to virtual format. */
	248
56eec3c7	249	#undef REGISTER_CONVERTIBLE
5076de82 FF	250	#define REGISTER_CONVERTIBLE(N) \
	251	((N < 3) ? 0 : \
	252	(N < 5) ? 1 : \
	253	(N < 8) ? 0 : \
	254	(N < 14) ? 1 : \
	255	0)
	256
8a19fe21 PS	257	#include "floatformat.h"
8a19fe21 PS	258
ad09cb2b PS	259	/* Convert data from raw format for register REGNUM in buffer FROM
ad09cb2b PS	260	to virtual format with type TYPE in buffer TO. */
5076de82	261
56eec3c7	262	#undef REGISTER_CONVERT_TO_VIRTUAL
ad09cb2b PS	263	#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
	264	{ \
	265	double val; \
8a19fe21	266	floatformat_to_double (&floatformat_i387_ext, (FROM), &val); \
ad09cb2b PS	267	store_floating ((TO), TYPE_LENGTH (TYPE), val); \
ad09cb2b PS	268	}
5076de82	269
ad09cb2b PS	270	/* Convert data from virtual format with type TYPE in buffer FROM
ad09cb2b PS	271	to raw format for register REGNUM in buffer TO. */
5076de82	272
56eec3c7	273	#undef REGISTER_CONVERT_TO_RAW
ad09cb2b PS	274	#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
	275	{ \
	276	double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
8a19fe21	277	floatformat_from_double (&floatformat_i387_ext, &val, (TO)); \
ad09cb2b	278	}
5076de82 FF	279
	280	/* Return the GDB type object for the "standard" data type
	281	of data in register N. */
	282
56eec3c7	283	#undef REGISTER_VIRTUAL_TYPE
5076de82 FF	284	#define REGISTER_VIRTUAL_TYPE(N) \
	285	((N < 3) ? builtin_type_int : \
	286	(N < 5) ? builtin_type_double : \
	287	(N < 8) ? builtin_type_int : \
	288	(N < 14) ? builtin_type_double : \
	289	builtin_type_int)
	290
5076de82	291	/* Store the address of the place in which to copy the structure the
8a19fe21 PS	292	subroutine will return. This is called from call_function.
	293	Native cc passes the address in eax, gcc (up to version 2.5.8)
	294	passes it on the stack. gcc should be fixed in future versions to
	295	adopt native cc conventions. */
5076de82	296
56eec3c7	297	#undef STORE_STRUCT_RETURN
8a19fe21	298	#define STORE_STRUCT_RETURN(ADDR, SP) write_register(0, (ADDR))
5076de82 FF	299
	300	/* Extract from an array REGBUF containing the (raw) register state
	301	a function return value of type TYPE, and copy that, in virtual format,
	302	into VALBUF. */
	303
56eec3c7	304	#undef EXTRACT_RETURN_VALUE
5076de82 FF	305	#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
	306	symmetry_extract_return_value(TYPE, REGBUF, VALBUF)
	307
5076de82	308	\f
5076de82 FF	309	extern void
	310	print_387_control_word PARAMS ((unsigned int));
	311
	312	extern void
	313	print_387_status_word PARAMS ((unsigned int));
8a19fe21 PS	314
	315	/* The following redefines make backtracing through sigtramp work.
	316	They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
	317	from the sigcontext structure which is pushed by the kernel on the
	318	user stack, along with a pointer to it. */
	319
	320	#define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigcode", name))
	321
	322	/* Offset to saved PC in sigcontext, from <signal.h>. */
	323	#define SIGCONTEXT_PC_OFFSET 16
	324
	325	/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
	326	chain-pointer.
	327	In the case of the i386, the frame's nominal address
	328	is the address of a 4-byte word containing the calling frame's address. */
	329	#undef FRAME_CHAIN
	330	#define FRAME_CHAIN(thisframe) \
	331	(thisframe->signal_handler_caller \
	332	? thisframe->frame \
	333	: (!inside_entry_file ((thisframe)->pc) \
	334	? read_memory_integer ((thisframe)->frame, 4) \
	335	: 0))
	336
	337	/* A macro that tells us whether the function invocation represented
	338	by FI does not have a frame on the stack associated with it. If it
	339	does not, FRAMELESS is set to 1, else 0. */
	340	#undef FRAMELESS_FUNCTION_INVOCATION
	341	#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
	342	do { \
	343	if ((FI)->signal_handler_caller) \
	344	(FRAMELESS) = 0; \
	345	else \
	346	(FRAMELESS) = frameless_look_for_prologue(FI); \
	347	} while (0)
	348
	349	/* Saved Pc. Get it from sigcontext if within sigtramp. */
	350
	351	#undef FRAME_SAVED_PC
	352	#define FRAME_SAVED_PC(FRAME) \
	353	(((FRAME)->signal_handler_caller \
	354	? sigtramp_saved_pc (FRAME) \
	355	: read_memory_integer ((FRAME)->frame + 4, 4)) \
	356	)