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Diffstat (limited to 'compiler/i386/cpubase.inc')
| -rw-r--r-- | compiler/i386/cpubase.inc | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/compiler/i386/cpubase.inc b/compiler/i386/cpubase.inc new file mode 100644 index 0000000000..a85c35549a --- /dev/null +++ b/compiler/i386/cpubase.inc @@ -0,0 +1,171 @@ +{ + 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 + ); + + +{***************************************************************************** + 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={$i i386int.inc} + +{***************************************************************************** + Constants +*****************************************************************************} + c_countusableregsint = 4; + +{ + firstsaveintreg = RS_EAX; + lastsaveintreg = RS_EDX; + firstsavefpureg = RS_INVALID; + lastsavefpureg = RS_INVALID; + firstsavemmreg = RS_MM0; + lastsavemmreg = RS_MM7; + + general_superregisters = [RS_EAX,RS_EBX,RS_ECX,RS_EDX]; + + maxvarregs = 4; + varregs : array[1..maxvarregs] of tsuperregister = + (RS_EBX,RS_EDX,RS_ECX,RS_EAX); + + maxfpuvarregs = 8; + + maxmmvarregs = 8; +} + +{***************************************************************************** + GDB Information +*****************************************************************************} + + {# Register indexes for stabs information, when some + parameters or variables are stored in registers. + + Taken from i386.c (dbx_register_map) and i386.h + (FIXED_REGISTERS) from GCC 3.x source code + + } + reg_stab_table : array[tregisterindex] of shortint = ( + {$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, } + 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_M64; + +{***************************************************************************** + 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..2] of tsuperregister = (RS_EBX,RS_ESI,RS_EDI); + {# 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; + + |