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- /* Macro defintions for IBM AIX PS/2 (i386).
- Copyright 1986, 1987, 1989, 1992, 1993 Free Software Foundation, Inc.
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Changes for IBM AIX PS/2 by Minh Tran-Le (tranle@intellicorp.com). */
-
- #ifndef TM_I386AIX_H
- #define TM_I386AIX_H 1
-
- #include "i386/tm-i386v.h"
- #include <sys/reg.h>
-
- #ifndef I386
- # define I386 1
- #endif
- #ifndef I386_AIX_TARGET
- # define I386_AIX_TARGET 1
- #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.
- */
- #undef START_INFERIOR_TRAPS_EXPECTED
- #define START_INFERIOR_TRAPS_EXPECTED 2
-
- /* Number of machine registers */
- #undef NUM_REGS
- #define NUM_REGS 24 /* 16+8 */
-
- /* Initializer for an array of names of registers.
- There should be NUM_REGS strings in this initializer. */
-
- /* the order of the first 8 registers must match the compiler's
- * numbering scheme (which is the same as the 386 scheme)
- * also, this table must match regmap in i386-pinsn.c.
- */
- #undef REGISTER_NAMES
- #define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \
- "esp", "ebp", "esi", "edi", \
- "eip", "eflags", "cs", "ss", \
- "ds", "es", "fs", "gs", \
- "st0", "st1", "st2", "st3", \
- "st4", "st5", "st6", "st7", \
- }
-
- /* 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. */
-
- #undef FP_REGNUM
- #define FP_REGNUM 5 /* (ebp) Contains address of executing stack frame */
- #undef SP_REGNUM
- #define SP_REGNUM 4 /* (usp) Contains address of top of stack */
-
- #undef PC_REGNUM
- #define PC_REGNUM 8 /* (eip) Contains program counter */
- #undef PS_REGNUM
- #define PS_REGNUM 9 /* (eflags) Contains processor status */
-
- #define FP0_REGNUM 16 /* (st0) 387 register */
-
- /* Total amount of space needed to store our copies of the machine's
- register state, the array `registers'. */
- /* 16 i386 registers and 8 i387 registers */
- #undef REGISTER_BYTES
- #define REGISTER_BYTES (16*4 + 8*10)
-
- /* Index within `registers' of the first byte of the space for
- register N. */
- #undef REGISTER_BYTE
- #define REGISTER_BYTE(N) \
- ((N < FP0_REGNUM) ? (N * 4) : \
- (((N - FP0_REGNUM) * 10) + 64))
-
- /* 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 < FP0_REGNUM) ? 4 : 10)
-
- /* 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 < FP0_REGNUM) ? 0 : 1)
-
- /* 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; \
- i387_to_double ((FROM), (char *)&val); \
- store_floating ((TO), TYPE_LENGTH (TYPE), val); \
- }
- extern void
- i387_to_double PARAMS ((char *, char *));
-
- /* 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)); \
- double_to_i387((char *)&val, (TO)); \
- }
- extern void
- double_to_i387 PARAMS ((char *, char *));
-
- /* 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 < FP0_REGNUM) ? builtin_type_int : \
- builtin_type_double)
-
- /* 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) \
- i386_extract_return_value (TYPE,REGBUF,VALBUF)
-
- /* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
- #undef STORE_RETURN_VALUE
- #define STORE_RETURN_VALUE(TYPE,VALBUF) \
- { \
- if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF), \
- TYPE_LENGTH (TYPE)); \
- else \
- write_register_bytes (0, (VALBUF), TYPE_LENGTH (TYPE)); \
- }
-
- #endif /* TM_I386AIX_H */
-