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fpc/compiler/x86/cpubase.pas

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{
Copyright (c) 1998-2002 by Florian Klaempfl and Peter Vreman
Contains the base types for the i386 and x86-64 architecture
* This code was inspired by the NASM sources
The Netwide Assembler is Copyright (c) 1996 Simon Tatham and
Julian Hall. All rights reserved.
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.
****************************************************************************
}
{# Base unit for processor information. This unit contains
enumerations of registers, opcodes, sizes, and other
such things which are processor specific.
}
unit cpubase;
{$i fpcdefs.inc}
interface
uses
cutils,cclasses,
globtype,
cgbase
;
{*****************************************************************************
Assembler Opcodes
*****************************************************************************}
type
{$ifdef x86_64}
TAsmOp={$i x8664op.inc}
{$else x86_64}
TAsmOp={$i i386op.inc}
{$endif x86_64}
{ This should define the array of instructions as string }
op2strtable=array[tasmop] of string[15];
const
{ First value of opcode enumeration }
firstop = low(tasmop);
{ Last value of opcode enumeration }
lastop = high(tasmop);
{*****************************************************************************
Registers
*****************************************************************************}
const
{ Invalid register number }
RS_INVALID = $ff;
{ Integer Super registers }
RS_RAX = $00; {EAX}
RS_RCX = $01; {ECX}
RS_RDX = $02; {EDX}
RS_RBX = $03; {EBX}
RS_RSI = $04; {ESI}
RS_RDI = $05; {EDI}
RS_RBP = $06; {EBP}
RS_RSP = $07; {ESP}
RS_R8 = $08; {R8}
RS_R9 = $09; {R9}
RS_R10 = $0a; {R10}
RS_R11 = $0b; {R11}
RS_R12 = $0c; {R12}
RS_R13 = $0d; {R13}
RS_R14 = $0e; {R14}
RS_R15 = $0f; {R15}
{ create aliases to allow code sharing between x86-64 and i386 }
RS_EAX = RS_RAX;
RS_EBX = RS_RBX;
RS_ECX = RS_RCX;
RS_EDX = RS_RDX;
RS_ESI = RS_RSI;
RS_EDI = RS_RDI;
RS_EBP = RS_RBP;
RS_ESP = RS_RSP;
{ Number of first imaginary register }
first_int_imreg = $10;
{ Float Super registers }
RS_ST0 = $00;
RS_ST1 = $01;
RS_ST2 = $02;
RS_ST3 = $03;
RS_ST4 = $04;
RS_ST5 = $05;
RS_ST6 = $06;
RS_ST7 = $07;
{ Number of first imaginary register }
first_fpu_imreg = $08;
{ MM Super registers }
RS_XMM0 = $00;
RS_XMM1 = $01;
RS_XMM2 = $02;
RS_XMM3 = $03;
RS_XMM4 = $04;
RS_XMM5 = $05;
RS_XMM6 = $06;
RS_XMM7 = $07;
RS_XMM8 = $08;
RS_XMM9 = $09;
RS_XMM10 = $0a;
RS_XMM11 = $0b;
RS_XMM12 = $0c;
RS_XMM13 = $0d;
RS_XMM14 = $0e;
RS_XMM15 = $0f;
{ Number of first imaginary register }
{$ifdef x86_64}
first_mm_imreg = $10;
{$else x86_64}
first_mm_imreg = $08;
{$endif x86_64}
{ The subregister that specifies the entire register and an address }
{$ifdef x86_64}
{ Hammer }
R_SUBWHOLE = R_SUBQ;
R_SUBADDR = R_SUBQ;
{$else x86_64}
{ i386 }
R_SUBWHOLE = R_SUBD;
R_SUBADDR = R_SUBD;
{$endif x86_64}
{ Available Registers }
{$ifdef x86_64}
{$i r8664con.inc}
{$else x86_64}
{$i r386con.inc}
{$endif x86_64}
type
{ Number of registers used for indexing in tables }
{$ifdef x86_64}
tregisterindex=0..{$i r8664nor.inc}-1;
{$else x86_64}
tregisterindex=0..{$i r386nor.inc}-1;
{$endif x86_64}
const
{ TODO: Calculate bsstart}
regnumber_count_bsstart = 64;
regnumber_table : array[tregisterindex] of tregister = (
{$ifdef x86_64}
{$i r8664num.inc}
{$else x86_64}
{$i r386num.inc}
{$endif x86_64}
);
regstabs_table : array[tregisterindex] of shortint = (
{$ifdef x86_64}
{$i r8664stab.inc}
{$else x86_64}
{$i r386stab.inc}
{$endif x86_64}
);
regdwarf_table : array[tregisterindex] of shortint = (
{$ifdef x86_64}
{$i r8664dwrf.inc}
{$else x86_64}
{$i r386dwrf.inc}
{$endif x86_64}
);
type
totherregisterset = set of tregisterindex;
{*****************************************************************************
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]=('',
'a','ae','b','be','c','e','g','ge','l','le','na','nae',
'nb','nbe','nc','ne','ng','nge','nl','nle','no','np',
'ns','nz','o','p','pe','po','s','z'
);
{*****************************************************************************
Flags
*****************************************************************************}
type
TResFlags = (F_E,F_NE,F_G,F_L,F_GE,F_LE,F_C,F_NC,
F_A,F_AE,F_B,F_BE,
F_S,F_NS,F_O,F_NO);
{*****************************************************************************
Constants
*****************************************************************************}
const
{ declare aliases }
LOC_SSEREGISTER = LOC_MMREGISTER;
LOC_CSSEREGISTER = LOC_CMMREGISTER;
max_operands = 3;
maxfpuregs = 8;
{*****************************************************************************
CPU Dependent Constants
*****************************************************************************}
{$i cpubase.inc}
{*****************************************************************************
Helpers
*****************************************************************************}
function cgsize2subreg(regtype: tregistertype; s:Tcgsize):Tsubregister;
function reg2opsize(r:Tregister):topsize;
function reg_cgsize(const reg: tregister): tcgsize;
function is_calljmp(o:tasmop):boolean;
procedure inverse_flags(var f: TResFlags);
function flags_to_cond(const f: TResFlags) : TAsmCond;
function is_segment_reg(r:tregister):boolean;
function findreg_by_number(r:Tregister):tregisterindex;
function std_regnum_search(const s:string):Tregister;
function std_regname(r:Tregister):string;
function dwarf_reg(r:tregister):shortint;
function inverse_cond(const c: TAsmCond): TAsmCond; {$ifdef USEINLINE}inline;{$endif USEINLINE}
function conditions_equal(const c1, c2: TAsmCond): boolean; {$ifdef USEINLINE}inline;{$endif USEINLINE}
implementation
uses
rgbase,verbose;
const
{$ifdef x86_64}
std_regname_table : array[tregisterindex] of string[7] = (
{$i r8664std.inc}
);
regnumber_index : array[tregisterindex] of tregisterindex = (
{$i r8664rni.inc}
);
std_regname_index : array[tregisterindex] of tregisterindex = (
{$i r8664sri.inc}
);
{$else x86_64}
std_regname_table : array[tregisterindex] of string[7] = (
{$i r386std.inc}
);
regnumber_index : array[tregisterindex] of tregisterindex = (
{$i r386rni.inc}
);
std_regname_index : array[tregisterindex] of tregisterindex = (
{$i r386sri.inc}
);
{$endif x86_64}
{*****************************************************************************
Helpers
*****************************************************************************}
function cgsize2subreg(regtype: tregistertype; s:Tcgsize):Tsubregister;
begin
case s of
OS_8,OS_S8:
cgsize2subreg:=R_SUBL;
OS_16,OS_S16:
cgsize2subreg:=R_SUBW;
OS_32,OS_S32:
cgsize2subreg:=R_SUBD;
OS_64,OS_S64:
cgsize2subreg:=R_SUBQ;
OS_M64:
cgsize2subreg:=R_SUBNONE;
OS_F32,OS_F64,OS_C64:
case regtype of
R_FPUREGISTER:
cgsize2subreg:=R_SUBWHOLE;
R_MMREGISTER:
case s of
OS_F32:
cgsize2subreg:=R_SUBMMS;
OS_F64:
cgsize2subreg:=R_SUBMMD;
else
internalerror(2009071901);
end;
else
internalerror(2009071902);
end;
OS_M128,OS_MS128:
cgsize2subreg:=R_SUBMMWHOLE;
else
internalerror(200301231);
end;
end;
function reg_cgsize(const reg: tregister): tcgsize;
const subreg2cgsize:array[Tsubregister] of Tcgsize =
(OS_NO,OS_8,OS_8,OS_16,OS_32,OS_64,OS_NO,OS_NO,OS_NO,OS_F32,OS_F64,OS_M128);
begin
case getregtype(reg) of
R_INTREGISTER :
reg_cgsize:=subreg2cgsize[getsubreg(reg)];
R_FPUREGISTER :
reg_cgsize:=OS_F80;
R_MMXREGISTER:
reg_cgsize:=OS_M64;
R_MMREGISTER:
reg_cgsize:=subreg2cgsize[getsubreg(reg)];
R_SPECIALREGISTER :
case reg of
NR_CS,NR_DS,NR_ES,NR_SS,NR_FS,NR_GS:
reg_cgsize:=OS_16
else
reg_cgsize:=OS_32
end
else
internalerror(200303181);
end;
end;
function reg2opsize(r:Tregister):topsize;
const
subreg2opsize : array[tsubregister] of topsize =
(S_NO,S_B,S_B,S_W,S_L,S_Q,S_NO,S_NO,S_NO,S_NO,S_NO,S_NO);
begin
reg2opsize:=S_L;
case getregtype(r) of
R_INTREGISTER :
reg2opsize:=subreg2opsize[getsubreg(r)];
R_FPUREGISTER :
reg2opsize:=S_FL;
R_MMXREGISTER,
R_MMREGISTER :
reg2opsize:=S_MD;
R_SPECIALREGISTER :
begin
case r of
NR_CS,NR_DS,NR_ES,
NR_SS,NR_FS,NR_GS :
reg2opsize:=S_W;
end;
end;
else
internalerror(200303181);
end;
end;
function is_calljmp(o:tasmop):boolean;
begin
case o of
A_CALL,
{$ifdef i386}
A_JCXZ,
{$endif i386}
A_JECXZ,
{$ifdef x86_64}
A_JRCXZ,
{$endif x86_64}
A_JMP,
A_LOOP,
A_LOOPE,
A_LOOPNE,
A_LOOPNZ,
A_LOOPZ,
A_Jcc :
is_calljmp:=true;
else
is_calljmp:=false;
end;
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,
F_NS,F_S,F_NO,F_O);
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,C_S,C_NS,C_O,C_NO);
begin
result := flags_2_cond[f];
end;
function is_segment_reg(r:tregister):boolean;
begin
result:=false;
case r of
NR_CS,NR_DS,NR_ES,
NR_SS,NR_FS,NR_GS :
result:=true;
end;
end;
function findreg_by_number(r:Tregister):tregisterindex;
var
hr : tregister;
begin
{ for the name the sub reg doesn't matter }
hr:=r;
case getsubreg(hr) of
R_SUBMMS,R_SUBMMD,R_SUBMMWHOLE:
setsubreg(hr,R_SUBNONE);
end;
result:=findreg_by_number_table(hr,regnumber_index);
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 std_regname(r:Tregister):string;
var
p : tregisterindex;
begin
if getregtype(r) in [R_MMREGISTER,R_MMXREGISTER] then
r:=newreg(getregtype(r),getsupreg(r),R_SUBNONE);
p:=findreg_by_number_table(r,regnumber_index);
if p<>0 then
result:=std_regname_table[p]
else
result:=generic_regname(r);
end;
function inverse_cond(const c: TAsmCond): TAsmCond; {$ifdef USEINLINE}inline;{$endif USEINLINE}
const
inverse: 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
);
begin
result := inverse[c];
end;
function conditions_equal(const c1, c2: TAsmCond): boolean; {$ifdef USEINLINE}inline;{$endif USEINLINE}
begin
result := c1 = c2;
end;
function dwarf_reg(r:tregister):shortint;
begin
result:=regdwarf_table[findreg_by_number(r)];
if result=-1 then
internalerror(200603251);
end;
end.
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