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{
Copyright (c) 1998-2000 by Florian Klaempfl and Peter Vreman
Contains the basic declarations for the i386 architecture
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.
****************************************************************************
}
{ This include file contains the basic declarations for the i386 architecture.
}
{*****************************************************************************
Operand Sizes
*****************************************************************************}
type
topsize = (S_NO,
S_B,S_W,S_L,S_Q,S_BW,S_BL,S_WL,
S_IS,S_IL,S_IQ,
S_FS,S_FL,S_FX,S_FV,S_FXX,
S_MD,
S_NEAR,S_FAR,S_SHORT,
S_T,
S_XMM,
S_YMM
);
{*****************************************************************************
Registers
*****************************************************************************}
const
{# Standard opcode string table (for each tasmop enumeration). The
opcode strings should conform to the names as defined by the
processor manufacturer.
}
std_op2str:op2strtable={$i i386int.inc}
{*****************************************************************************
GDB Information
*****************************************************************************}
{# Register indexes for stabs information, when some
parameters or variables are stored in registers.
Taken from i386.c (dbx_register_map) and i386.h
(FIXED_REGISTERS) from GCC 3.x source code
}
reg_stab_table : array[tregisterindex] of shortint = (
{$i r386stab.inc}
);
{*****************************************************************************
Default generic sizes
*****************************************************************************}
{# Defines the default address size for a processor, }
OS_ADDR = OS_32;
{# the natural int size for a processor,
has to match osuinttype/ossinttype as initialized in psystem }
OS_INT = OS_32;
OS_SINT = OS_S32;
{# the maximum float size for a processor, }
OS_FLOAT = OS_F80;
{# the size of a vector register for a processor }
OS_VECTOR = OS_M128;
{*****************************************************************************
Generic Register names
*****************************************************************************}
{# Stack pointer register }
NR_STACK_POINTER_REG = NR_ESP;
RS_STACK_POINTER_REG = RS_ESP;
{# Frame pointer register }
RS_FRAME_POINTER_REG = RS_EBP;
NR_FRAME_POINTER_REG = NR_EBP;
{ Return address for DWARF }
NR_RETURN_ADDRESS_REG = NR_EIP;
{# Register for addressing absolute data in a position independant way,
such as in PIC code. The exact meaning is ABI specific. For
further information look at GCC source : PIC_OFFSET_TABLE_REGNUM
}
NR_PIC_OFFSET_REG = NR_EBX;
{ Results are returned in this register (32-bit values) }
NR_FUNCTION_RETURN_REG = NR_EAX;
RS_FUNCTION_RETURN_REG = RS_EAX;
{ Low part of 64bit return value }
NR_FUNCTION_RETURN64_LOW_REG = NR_EAX;
RS_FUNCTION_RETURN64_LOW_REG = RS_EAX;
{ High part of 64bit return value }
NR_FUNCTION_RETURN64_HIGH_REG = NR_EDX;
RS_FUNCTION_RETURN64_HIGH_REG = RS_EDX;
{ The value returned from a function is available in this register }
NR_FUNCTION_RESULT_REG = NR_FUNCTION_RETURN_REG;
RS_FUNCTION_RESULT_REG = RS_FUNCTION_RETURN_REG;
{ The lowh part of 64bit value returned from a function }
NR_FUNCTION_RESULT64_LOW_REG = NR_FUNCTION_RETURN64_LOW_REG;
RS_FUNCTION_RESULT64_LOW_REG = RS_FUNCTION_RETURN64_LOW_REG;
{ The high part of 64bit value returned from a function }
NR_FUNCTION_RESULT64_HIGH_REG = NR_FUNCTION_RETURN64_HIGH_REG;
RS_FUNCTION_RESULT64_HIGH_REG = RS_FUNCTION_RETURN64_HIGH_REG;
{ WARNING: don't change to R_ST0!! See comments above implementation of }
{ a_loadfpu* methods in rgcpu (JM) }
NR_fpu_result_reg = NR_ST;
NR_mm_result_reg = NR_MM0;
{ Offset where the parent framepointer is pushed }
PARENT_FRAMEPOINTER_OFFSET = 8;
{*****************************************************************************
GCC /ABI linking information
*****************************************************************************}
const
{# Registers which must be saved when calling a routine declared as
cppdecl, cdecl, stdcall, safecall, palmossyscall. The registers
saved should be the ones as defined in the target ABI and / or GCC.
This value can be deduced from the CALLED_USED_REGISTERS array in the
GCC source.
}
saved_standard_registers : array[0..3] of tsuperregister = (RS_EBX,RS_ESI,RS_EDI,RS_EBP);
saved_mm_registers : array[0..0] of tsuperregister = (RS_INVALID);
{# Required parameter alignment when calling a routine declared as
stdcall and cdecl. The alignment value should be the one defined
by GCC or the target ABI.
The value of this constant is equal to the constant
PARM_BOUNDARY / BITS_PER_UNIT in the GCC source.
}
std_param_align = 4;
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