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/* Macro definitions for GDB on an Intel i[345]86.
Copyright 1995, 1996, 1998, 1999, 2000, 2001
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef TM_I386_H
#define TM_I386_H 1
#define GDB_MULTI_ARCH GDB_MULTI_ARCH_PARTIAL
#include "regcache.h"
/* Forward declarations for prototypes. */
struct frame_info;
struct frame_saved_regs;
struct value;
struct type;
/* Offset from address of function to start of its code.
Zero on most machines. */
#define FUNCTION_START_OFFSET 0
/* Advance PC across any function entry prologue instructions to reach some
"real" code. */
#define SKIP_PROLOGUE(frompc) (i386_skip_prologue (frompc))
extern int i386_skip_prologue (int);
/* Stack grows downward. */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
/* Sequence of bytes for breakpoint instruction. */
#define BREAKPOINT {0xcc}
/* 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 1
/* Return the GDB type object for the "standard" data type of data in
register REGNUM. */
#define REGISTER_VIRTUAL_TYPE(regnum) i386_register_virtual_type (regnum)
extern struct type *i386_register_virtual_type (int regnum);
/* Return true iff register REGNUM's virtual format is different from
its raw format. */
#define REGISTER_CONVERTIBLE(regnum) i386_register_convertible (regnum)
extern int i386_register_convertible (int regnum);
/* Convert data from raw format for register REGNUM in buffer FROM to
virtual format with type TYPE in buffer TO. */
#define REGISTER_CONVERT_TO_VIRTUAL(regnum, type, from, to) \
i386_register_convert_to_virtual ((regnum), (type), (from), (to))
extern void i386_register_convert_to_virtual (int regnum, struct type *type,
char *from, char *to);
/* Convert data from virtual format with type TYPE in buffer FROM to
raw format for register REGNUM in buffer TO. */
#define REGISTER_CONVERT_TO_RAW(type, regnum, from, to) \
i386_register_convert_to_raw ((type), (regnum), (from), (to))
extern void i386_register_convert_to_raw (struct type *type, int regnum,
char *from, char *to);
/* Print out the i387 floating point state. */
extern void i387_float_info (void);
#define FLOAT_INFO { i387_float_info (); }
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
i386_push_arguments ((nargs), (args), (sp), (struct_return), (struct_addr))
extern CORE_ADDR i386_push_arguments (int nargs, struct value **args,
CORE_ADDR sp, int struct_return,
CORE_ADDR struct_addr);
/* Store the address of the place in which to copy the structure the
subroutine will return. This is called from call_function. */
#define STORE_STRUCT_RETURN(addr, sp) \
i386_store_struct_return ((addr), (sp))
extern void i386_store_struct_return (CORE_ADDR addr, CORE_ADDR sp);
/* 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. */
#define DEPRECATED_EXTRACT_RETURN_VALUE(type, regbuf, valbuf) \
i386_extract_return_value ((type), (regbuf), (valbuf))
extern void i386_extract_return_value (struct type *type, char *regbuf,
char *valbuf);
/* Write into the appropriate registers a function return value stored
in VALBUF of type TYPE, given in virtual format. */
#define STORE_RETURN_VALUE(type, valbuf) \
i386_store_return_value ((type), (valbuf))
extern void i386_store_return_value (struct type *type, char *valbuf);
/* Extract from an array REGBUF containing the (raw) register state
the address in which a function should return its structure value,
as a CORE_ADDR. */
#define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(regbuf) \
i386_extract_struct_value_address ((regbuf))
extern CORE_ADDR i386_extract_struct_value_address (char *regbuf);
/* Things needed for making the inferior call functions. */
/* "An argument's size is increased, if necessary, to make it a
multiple of [32 bit] words. This may require tail padding,
depending on the size of the argument" - from the x86 ABI. */
#define PARM_BOUNDARY 32
/* Push an empty stack frame, to record the current PC, etc. */
#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); }
extern void i386_push_dummy_frame (void);
/* Discard from the stack the innermost frame, restoring all registers. */
#define POP_FRAME { i386_pop_frame (); }
extern void i386_pop_frame (void);
/* this is
* call 11223344 (32 bit relative)
* int3
*/
#define CALL_DUMMY { 0x223344e8, 0xcc11 }
#define CALL_DUMMY_LENGTH 8
#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */
#define CALL_DUMMY_BREAKPOINT_OFFSET 5
/* Insert the specified number of args and function address
into a call sequence of the above form stored at DUMMYNAME. */
#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
i386_fix_call_dummy (dummyname, pc, fun, nargs, args, type, gcc_p)
extern void i386_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun,
int nargs, struct value **args,
struct type *type, int gcc_p);
/* FIXME: kettenis/2000-06-12: These do not belong here. */
extern void print_387_control_word (unsigned int);
extern void print_387_status_word (unsigned int);
/* Offset from SP to first arg on stack at first instruction of a function */
#define SP_ARG0 (1 * 4)
#endif /* ifndef TM_I386_H */
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