fpc/compiler/sparc/cpubase.pas
2003-12-19 14:38:03 +00:00

653 lines
22 KiB
ObjectPascal

{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
Contains the base types for the SPARC
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 Unit contains the base types for the PowerPC
}
unit cpubase;
{$i fpcdefs.inc}
interface
uses
strings,cutils,cclasses,aasmbase,cpuinfo,cgbase;
{*****************************************************************************
Assembler Opcodes
*****************************************************************************}
type
{$WARNING CPU32 opcodes do not fully include the Ultra SPRAC instruction set.}
{ don't change the order of these opcodes! }
TAsmOp=({$INCLUDE opcode.inc});
{# This should define the array of instructions as string }
op2strtable=array[tasmop] of string[11];
Const
{# First value of opcode enumeration }
firstop = low(tasmop);
{# Last value of opcode enumeration }
lastop = high(tasmop);
std_op2str:op2strtable=({$INCLUDE strinst.inc});
{*****************************************************************************
Registers
*****************************************************************************}
type
{ Number of registers used for indexing in tables }
tregisterindex=0..{$i rspnor.inc}-1;
totherregisterset = set of tregisterindex;
const
{ Available Superregisters }
{$i rspsup.inc}
{ No Subregisters }
R_SUBWHOLE=R_SUBNONE;
{ Available Registers }
{$i rspcon.inc}
first_int_imreg = $20;
first_fpu_imreg = $20;
{$warning TODO Calculate bsstart}
regnumber_count_bsstart = 128;
regnumber_table : array[tregisterindex] of tregister = (
{$i rspnum.inc}
);
regstabs_table : array[tregisterindex] of ShortInt = (
{$i rspstab.inc}
);
{*****************************************************************************
Conditions
*****************************************************************************}
type
TAsmCond=(C_None,
C_A,C_AE,C_B,C_BE,C_C,C_E,C_G,C_GE,C_L,C_LE,C_NA,C_NAE,
C_NB,C_NBE,C_NC,C_NE,C_NG,C_NGE,C_NL,C_NLE,C_NO,C_NP,
C_NS,C_NZ,C_O,C_P,C_PE,C_PO,C_S,C_Z
);
const
cond2str:array[TAsmCond] of string[3]=('',
'gu','cc','cs','leu','cs','e','g','ge','l','le','leu','cs',
'cc','gu','cc','ne','le','l','ge','g','vc','XX',
'pos','ne','vs','XX','XX','XX','vs','e'
);
inverse_cond:array[TAsmCond] of TAsmCond=(C_None,
C_NA,C_NAE,C_NB,C_NBE,C_NC,C_NE,C_NG,C_NGE,C_NL,C_NLE,C_A,C_AE,
C_B,C_BE,C_C,C_E,C_G,C_GE,C_L,C_LE,C_O,C_P,
C_S,C_Z,C_NO,C_NP,C_NP,C_P,C_NS,C_NZ
);
const
CondAsmOps=1;
CondAsmOp:array[0..CondAsmOps-1] of TAsmOp=(
A_Bxx
);
CondAsmOpStr:array[0..CondAsmOps-1] of string[7]=(
'B'
);
{*****************************************************************************
Flags
*****************************************************************************}
type
TResFlags=(
F_E, {Equal}
F_NE, {Not Equal}
F_G, {Greater}
F_L, {Less}
F_GE, {Greater or Equal}
F_LE, {Less or Equal}
F_C, {Carry}
F_NC, {Not Carry}
F_A, {Above}
F_AE, {Above or Equal}
F_B, {Below}
F_BE {Below or Equal}
);
{*****************************************************************************
Reference
*****************************************************************************}
type
TRefOptions=(ref_none,ref_parafixup,ref_localfixup,ref_selffixup);
{ since we have no full 32 bit offsets, we need to be able to specify the high
and low bits of the address of a symbol }
trefsymaddr = (refs_no,refs_full,refs_hi,refs_lo);
{ reference record }
preference = ^treference;
treference = packed record
{ base register, R_NO if none }
base,
{ index register, R_NO if none }
index : tregister;
{ offset, 0 if none }
offset : longint;
{ symbol this reference refers to, nil if none }
symbol : tasmsymbol;
{ used in conjunction with symbols and offsets: refs_full means }
{ means a full 32bit reference, refs_hi means the upper 16 bits }
{ and refs_lo the lower 16 bits of the address }
symaddr : trefsymaddr;
{ changed when inlining and possibly in other cases, don't }
{ set manually }
offsetfixup : longint;
{ used in conjunction with the previous field }
options : trefoptions;
{ alignment this reference is guaranteed to have }
alignment : byte;
end;
{ reference record }
pparareference = ^tparareference;
tparareference = packed record
index : tregister;
offset : longint;
end;
const
symaddr2str: array[trefsymaddr] of string[3] = ('','','%hi','%lo');
{*****************************************************************************
Operand Sizes
*****************************************************************************}
{$ifdef dummy}
{*****************************************************************************
Argument Classification
*****************************************************************************}
type
TArgClass = (
{ the following classes should be defined by all processor implemnations }
AC_NOCLASS,
AC_MEMORY,
AC_INTEGER,
AC_FPU,
{ the following argument classes are i386 specific }
AC_FPUUP,
AC_SSE,
AC_SSEUP);
{$endif dummy}
{*****************************************************************************
Generic Location
*****************************************************************************}
type
{ tparamlocation describes where a parameter for a procedure is stored.
References are given from the caller's point of view. The usual
TLocation isn't used, because contains a lot of unnessary fields.
}
tparalocation = packed record
size : TCGSize;
{ The location type where the parameter is passed, usually
LOC_REFERENCE,LOC_REGISTER or LOC_FPUREGISTER
}
loc : TCGLoc;
{Word alignment on stack 4 --> 32 bit}
Alignment:Byte;
case TCGLoc of
LOC_REFERENCE : (reference : tparareference; low_in_reg: boolean; lowreg : tregister);
LOC_FPUREGISTER, LOC_CFPUREGISTER, LOC_MMREGISTER, LOC_CMMREGISTER,
LOC_REGISTER,LOC_CREGISTER : (
case longint of
1 : (register,registerhigh : tregister);
{ overlay a registerlow }
2 : (registerlow : tregister);
{ overlay a 64 Bit register type }
3 : (reg64 : tregister64);
4 : (register64 : tregister64);
);
end;
treglocation = packed record
case longint of
1 : (register,registerhigh : tregister);
{ overlay a registerlow }
2 : (registerlow : tregister);
{ overlay a 64 Bit register type }
3 : (reg64 : tregister64);
4 : (register64 : tregister64);
end;
tlocation = packed record
size : TCGSize;
loc : tcgloc;
case tcgloc of
LOC_CREFERENCE,LOC_REFERENCE : (reference : treference);
LOC_CONSTANT : (
case longint of
{$ifdef FPC_BIG_ENDIAN}
1 : (_valuedummy,value : AWord);
{$else FPC_BIG_ENDIAN}
1 : (value : AWord);
{$endif FPC_BIG_ENDIAN}
{ can't do this, this layout depends on the host cpu. Use }
{ lo(valueqword)/hi(valueqword) instead (JM) }
{ 2 : (valuelow, valuehigh:AWord); }
{ overlay a complete 64 Bit value }
3 : (valueqword : qword);
);
LOC_FPUREGISTER, LOC_CFPUREGISTER, LOC_MMREGISTER, LOC_CMMREGISTER,
LOC_REGISTER,LOC_CREGISTER : (
case longint of
1 : (registerlow,registerhigh : tregister);
2 : (register : tregister);
{ overlay a 64 Bit register type }
3 : (reg64 : tregister64);
4 : (register64 : tregister64);
);
LOC_FLAGS : (resflags : tresflags);
end;
{*****************************************************************************
Constants
*****************************************************************************}
const
max_operands = 3;
{# Constant defining possibly all registers which might require saving }
ALL_OTHERREGISTERS = [];
general_superregisters = [RS_O0..RS_I7];
{# Table of registers which can be allocated by the code generator
internally, when generating the code.
}
{ legend: }
{ xxxregs = set of all possibly used registers of that type in the code }
{ generator }
{ usableregsxxx = set of all 32bit components of registers that can be }
{ possible allocated to a regvar or using getregisterxxx (this }
{ excludes registers which can be only used for parameter }
{ passing on ABI's that define this) }
{ c_countusableregsxxx = amount of registers in the usableregsxxx set }
maxintregs = 8;
{ to determine how many registers to use for regvars }
maxintscratchregs = 3;
usableregsint = [RS_L0..RS_L7];
c_countusableregsint = 8;
maxfpuregs = 8;
usableregsfpu=[RS_F0..RS_F31];
c_countusableregsfpu=32;
mmregs = [];
usableregsmm = [];
c_countusableregsmm = 0;
{ no distinction on this platform }
maxaddrregs = 0;
addrregs = [];
usableregsaddr = [];
c_countusableregsaddr = 0;
{$warning firstsaveintreg shall be RS_NO}
firstsaveintreg = RS_L0; { Temporary, having RS_NO is broken }
lastsaveintreg = RS_L0; { L0..L7 are already saved, I0..O7 are parameter }
firstsavefpureg = RS_F2; { F0..F1 is used for return value }
lastsavefpureg = RS_F31;
firstsavemmreg = RS_INVALID;
lastsavemmreg = RS_INVALID;
maxvarregs = 8;
varregs : Array [1..maxvarregs] of Tsuperregister =
(RS_L0,RS_L1,RS_L2,RS_L3,RS_L4,RS_L5,RS_L6,RS_L7);
maxfpuvarregs = 1;
fpuvarregs : Array [1..maxfpuvarregs] of TsuperRegister =
(RS_F2);
{
max_param_regs_int = 6;
param_regs_int: Array[1..max_param_regs_int] of TCpuRegister =
(R_3,R_4,R_5,R_6,R_7,R_8,R_9,R_10);
max_param_regs_fpu = 13;
param_regs_fpu: Array[1..max_param_regs_fpu] of TCpuRegister =
(R_F1,R_F2,R_F3,R_F4,R_F5,R_F6,R_F7,R_F8,R_F9,R_F10,R_F11,R_F12,R_F13);
max_param_regs_mm = 13;
param_regs_mm: Array[1..max_param_regs_mm] of TCpuRegister =
(R_M1,R_M2,R_M3,R_M4,R_M5,R_M6,R_M7,R_M8,R_M9,R_M10,R_M11,R_M12,R_M13);
}
{*****************************************************************************
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;
{# the maximum float size for a processor, }
OS_FLOAT = OS_F64;
{# the size of a vector register for a processor }
OS_VECTOR = OS_M64;
{*****************************************************************************
Generic Register names
*****************************************************************************}
{# Stack pointer register }
NR_STACK_POINTER_REG = NR_O6;
RS_STACK_POINTER_REG = RS_O6;
{# Frame pointer register }
NR_FRAME_POINTER_REG = NR_I6;
RS_FRAME_POINTER_REG = RS_I6;
{# 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
Taken from GCC rs6000.h
}
{$warning As indicated in rs6000.h, but can't find it anywhere else!}
{PIC_OFFSET_REG = R_30;}
{ the return_result_reg, is used inside the called function to store its return
value when that is a scalar value otherwise a pointer to the address of the
result is placed inside it }
{ Results are returned in this register (32-bit values) }
NR_FUNCTION_RETURN_REG = NR_I0;
RS_FUNCTION_RETURN_REG = RS_I0;
{ Low part of 64bit return value }
NR_FUNCTION_RETURN64_LOW_REG = NR_I1;
RS_FUNCTION_RETURN64_LOW_REG = RS_I1;
{ High part of 64bit return value }
NR_FUNCTION_RETURN64_HIGH_REG = NR_I0;
RS_FUNCTION_RETURN64_HIGH_REG = RS_I0;
{ The value returned from a function is available in this register }
NR_FUNCTION_RESULT_REG = NR_O0;
RS_FUNCTION_RESULT_REG = RS_O0;
{ The lowh part of 64bit value returned from a function }
NR_FUNCTION_RESULT64_LOW_REG = NR_O1;
RS_FUNCTION_RESULT64_LOW_REG = RS_O1;
{ The high part of 64bit value returned from a function }
NR_FUNCTION_RESULT64_HIGH_REG = NR_O0;
RS_FUNCTION_RESULT64_HIGH_REG = RS_O0;
NR_FPU_RESULT_REG = NR_F0;
NR_MM_RESULT_REG = NR_NO;
PARENT_FRAMEPOINTER_OFFSET = 68; { o0 }
{*****************************************************************************
GCC /ABI linking information
*****************************************************************************}
{# 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 CALLED_USED_REGISTERS array in the
GCC source.
}
std_saved_registers = [];
{# 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; { for 32-bit version only }
{*****************************************************************************
CPU Dependent Constants
*****************************************************************************}
const
simm13lo=-4096;
simm13hi=4095;
{*****************************************************************************
Helpers
*****************************************************************************}
function is_calljmp(o:tasmop):boolean;
procedure inverse_flags(var f: TResFlags);
function flags_to_cond(const f: TResFlags) : TAsmCond;
function cgsize2subreg(s:Tcgsize):Tsubregister;
function std_regname(r:Tregister):string;
function gas_regname(r:Tregister):string;
function std_regnum_search(const s:string):Tregister;
function findreg_by_number(r:Tregister):tregisterindex;
implementation
uses
rgBase,verbose;
const
std_regname_table : TRegNameTAble = (
{$i rspstd.inc}
);
regnumber_index : TRegisterIndexTable = (
{$i rsprni.inc}
);
std_regname_index : TRegisterIndexTable = (
{$i rspsri.inc}
);
{*****************************************************************************
Helpers
*****************************************************************************}
function is_calljmp(o:tasmop):boolean;
const
CallJmpOp=[A_JMPL..A_CBccc];
begin
is_calljmp:=(o in CallJmpOp);
end;
procedure inverse_flags(var f: TResFlags);
const
inv_flags: array[TResFlags] of TResFlags =
(F_NE,F_E,F_LE,F_GE,F_L,F_G,F_NC,F_C,F_BE,F_B,F_AE,F_A);
begin
f:=inv_flags[f];
end;
function flags_to_cond(const f:TResFlags):TAsmCond;
const
flags_2_cond:array[TResFlags] of TAsmCond=
(C_E,C_NE,C_G,C_L,C_GE,C_LE,C_C,C_NC,C_A,C_AE,C_B,C_BE);
begin
result:=flags_2_cond[f];
end;
function cgsize2subreg(s:Tcgsize):Tsubregister;
begin
cgsize2subreg:=R_SUBWHOLE;
end;
function std_regname(r:Tregister):string;
var
p : tregisterindex;
begin
p:=findreg_by_number_table(r,regnumber_index);
if p<>0 then
result:=std_regname_table[p]
else
result:=generic_regname(r);
end;
function std_regnum_search(const s:string):Tregister;
begin
result:=regnumber_table[findreg_by_name_table(s,std_regname_table,std_regname_index)];
end;
function findreg_by_number(r:Tregister):tregisterindex;
begin
result:=findreg_by_number_table(r,regnumber_index);
end;
function gas_regname(r:Tregister):string;
var
p : tregisterindex;
begin
p:=findreg_by_number_table(r,regnumber_index);
if p<>0 then
result:=std_regname_table[p]
else
result:=generic_regname(r);
end;
end.
{
$Log$
Revision 1.58 2003-12-19 14:38:03 mazen
* new TRegister definition applied
Revision 1.57 2003/11/10 19:05:50 peter
* fixed alias/colouring > 255
Revision 1.56 2003/11/01 19:27:54 peter
* 1.9.0
Revision 1.55 2003/10/31 08:47:13 mazen
* rgHelper renamed to rgBase
* using findreg_by_<name|number>_table directly to decrease heap overheading
Revision 1.54 2003/10/30 15:03:18 mazen
* now uses standard routines in rgBase unit to search registers by number and by name
Revision 1.53 2003/10/08 14:11:36 mazen
+ Alignement field added to TParaLocation (=4 as 32 bits archs)
Revision 1.52 2003/10/01 20:34:50 peter
* procinfo unit contains tprocinfo
* cginfo renamed to cgbase
* moved cgmessage to verbose
* fixed ppc and sparc compiles
Revision 1.51 2003/09/14 21:35:15 peter
* new volatile registers proc
Revision 1.50 2003/09/14 19:19:05 peter
* updates for new ra
Revision 1.49 2003/09/03 16:29:37 peter
* superregisters also from .dat file
Revision 1.48 2003/09/03 15:55:01 peter
* NEWRA branch merged
Revision 1.47.2.3 2003/09/02 17:49:17 peter
* newra updates
Revision 1.47.2.2 2003/09/01 21:02:55 peter
* sparc updates for new tregister
Revision 1.47.2.1 2003/08/31 21:08:16 peter
* first batch of sparc fixes
Revision 1.47 2003/08/19 13:22:51 mazen
+ implemented gas_regname based on convert_register_to_enum std_Reg2str
Revision 1.46 2003/08/17 16:59:20 jonas
* fixed regvars so they work with newra (at least for ppc)
* fixed some volatile register bugs
+ -dnotranslation option for -dnewra, which causes the registers not to
be translated from virtual to normal registers. Requires support in
the assembler writer as well, which is only implemented in aggas/
agppcgas currently
Revision 1.45 2003/07/06 17:58:22 peter
* framepointer fixes for sparc
* parent framepointer code more generic
Revision 1.44 2003/07/02 22:18:04 peter
* paraloc splitted in callerparaloc,calleeparaloc
* sparc calling convention updates
Revision 1.43 2003/06/17 16:34:44 jonas
* lots of newra fixes (need getfuncretparaloc implementation for i386)!
* renamed all_intregisters to volatile_intregisters and made it
processor dependent
Revision 1.42 2003/06/13 21:08:30 peter
* supreg_name added
Revision 1.41 2003/06/12 19:11:34 jonas
- removed ALL_INTREGISTERS (only the one in rgobj is valid)
Revision 1.40 2003/06/04 21:00:54 mazen
- making TOldRegister only declared for compatibility and
no more used in cpubase
Revision 1.39 2003/06/01 21:38:06 peter
* getregisterfpu size parameter added
* op_const_reg size parameter added
* sparc updates
Revision 1.38 2003/06/01 01:04:35 peter
* reference fixes
Revision 1.37 2003/05/31 15:05:28 peter
* FUNCTION_RESULT64_LOW/HIGH_REG added for int64 results
Revision 1.36 2003/05/31 01:00:51 peter
* register fixes
Revision 1.35 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
}