{
$Id: cpubase.pas,v 1.6 2002/11/17 18:26:16 mazen Exp $
Copyright (C) 2000 by Florian Klaempfl
this unit implements an asmlistitem class for the iA-64 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.
****************************************************************************
}
unit cpubase;
interface
uses
cutils,strings,systems,cobjects,globals,aasm,cpuinfo;
type
tasmop = (A_ADD,A_SUB,A_ADDP4,A_AND,A_ANDCM,A_OR,A_XOR,A_SHLADD,
A_SHLADDP4,A_ADDS,A_ADDL,A_CMP,A_CMP4,A_PADD1,A_PADD2,
A_PADD4,A_PSUB1,A_PSUB2,A_PSUB4,A_PAVG1,A_PAVG2,A_PAVGSUB1,
A_PAVGSUB2,A_PCMP1,A_PCMP2,A_PCMP4,A_PSHLADD2,A_PSHRADD2,
A_PMPY2,A_MIX1,A_MIX2,A_MIX4,A_PACK2,A_PACK4,A_UNPACK2,
A_UNPACK4,A_PMIN1,A_PMAX1,A_PMIN2,A_PMAX2,A_PSAD1,A_MUX1,
A_MUX2,A_PSHR2,A_PSHR4,A_SHR,A_PSHL2,A_SHL4,A_SHL,
A_POPCNT,A_SHRP,A_EXTR,A_DEP,A_TBIT,A_TNAT,A_BREAK,
A_NOP,A_CHK,A_MOV,A_ZX1,A_ZX2,A_ZXT4,A_SXT1,A_SXT2,A_SXT4,
A_CXZ1,A_CZX2,A_LD1,A_LD2,A_LD4,A_LD8,A_ST1,A_ST2,A_ST4,
A_ST8,A_LDFS,A_LDFD,A_LDF8,A_LDFE,A_LDF,A_STFS,A_STFD,A_STF8,
A_STFE,A_STF,A_LDFPS,A_LDFPD,A_LDFP8,A_LFETCH,A_CMPXCHG1,
A_CMPXCHG2,A_CMPXHG4,A_CMPXCHG8,A_XCHG1,A_XCHG2,A_XCHG4,
A_XCHG8,A_FETCHADD4,A_FETCHADD8,A_SETF,A_GETF,
A_INVALA,A_MF,A_SRLZ,A_SYNC,A_FLUSHRS,A_FC,A_ALLOC,A_SUM,
A_RUM,A_BR,A_CLRRRB,A_FMA,A_FPMA,A_FMS,A_FPMS,A_FNMA,A_FPNMA,
A_XMA,A_FSELECT,A_FCLASS,A_FRCPA,A_FPRCPA,A_FRSQRTA,
A_FPRSQRTA,A_FMIN,A_FMAX,A_FAMIN,A_FAMAX,A_FPMIN,A_FPMAX,
A_FPAMIN,A_FPAMAX,A_FPCMP,A_FMERGE,A_FMIX,A_FSXT,A_FPACK,
A_FSWAP,A_FAND,A_FANDCM,A_FOR,A_FXOR,A_FPMERGE,A_FCVT,
A_FPCVT,A_FSETC,A_FCLRT,A_FCHKF,A_MOVL);
Const
firstop = low(tasmop);
lastop = high(tasmop);
type
TAsmCond = (C_NONE,C_LT,C_LTU,C_EQ,C_LT_UNC,C_LTU_UNC,C_EQ_UNC,
C_EQ_AND,C_EQ_OR,C_EQ_OR_ANDCM,C_NE_AND,C_NE_OR);
THint = (H_NONE,H_NT1,H_NT2,H_NTA);
TLdStType = (LST_NONE,LST_S,LST_A,LSR_SA,LST_BIAS,LST_ACQ,LST_C_CLR,
LST_FILL,LST_C_NC,LST_C_CLR_ACQ,LST_REL,
LST_SPILL);
Type
TRegister = (R_NO, { R_NO is Mandatory, signifies no register }
R_0,R_1,R_2,R_3,R_4,R_5,R_6,R_7,R_8,R_9,
R_10,R_11,R_12,R_13,R_14,R_15,R_16,R_17,R_18,R_19,
R_20,R_21,R_22,R_23,R_24,R_25,R_26,R_27,R_28,R_29,
R_30,R_31,
R_F0,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,R_F14,R_F15,R_F16,R_F17,R_F18,R_F19,
R_F20,R_F21,R_F22,R_F23,R_F24,R_F25,R_F26,R_F27,R_F28,R_F29,
R_F30,R_F31);
TRegisterset = Set of TRegister;
{ -1 indicates no qualifying prediction }
tqp = -1..63;
const
qp_none : tqp = -1;
{ Constants describing the registers }
Const
Firstreg = R_0;
LastReg = R_F31;
stack_pointer_reg = R_30;
frame_pointer_reg = R_15;
self_pointer_reg = R_16;
accumulator = R_0;
{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}
return_result_reg = accumulator;
{the function_result_reg contains the function result after a call to a scalar
function othewise it contains a pointer to the returned result}
function_result_reg = accumulator;
global_pointer = R_29;
return_pointer = R_26;
max_scratch_regs = 2;
scratch_regs : array[1..max_scratch_regs] of tregister = (R_1,R_2);
{ low and high of the available maximum width integer general purpose }
{ registers }
LoGPReg = R_0;
HiGPReg = R_31;
{ sizes }
pointer_size = 8;
extended_size = 16;
general_registers = [R_0..R_31];
intregs = [R_0..R_31];
fpuregs = [R_F0..R_F31];
mmregs = [];
availabletempregsint = [R_0..R_14,R_16..R_25,R_28];
availabletempregsfpu = [R_F0..R_F30];
availabletempregsmm = [];
c_countusableregsint = 26;
c_countusableregsfpu = 31;
c_countusableregsmm = 0;
maxfpuvarregs = 128;
maxvarregs = 128;
max_operands = 4;
varregs : Array [1..6] of Tregister =
(R_9,R_10,R_11,R_12,R_13,R_14);
{*****************************************************************************
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 = [R_9..R_14,R_F2..R_F9];
{# 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 = ???;
Type
TReference = record
offset : aword;
symbol : pasmsymbol;
base : tregister;
is_immediate : boolean;
offsetfixup : word; {needed for inline}
{ the boundary to which the reference is surely aligned }
alignment : byte;
end;
PReference = ^TReference;
tloc = (LOC_INVALID,
LOC_REGISTER,
LOC_FPU,
LOC_MEM,
LOC_REFERENCE,
LOC_JUMP,
{ the alpha doesn't have flags, but this }
{ avoid some conditional compiling }
{ DON'T USE for the alpha }
LOC_FLAGS,
LOC_CREGISTER,
LOC_CFPUREGISTER,
LOC_CONST);
tlocation = record
case loc : tloc of
LOC_REFERENCE,LOC_MEM : (reference : treference);
LOC_CREGISTER,
LOC_REGISTER : (register : tregister);
LOC_FLAGS : (qp : tqp);
LOC_JUMP : ();
end;
{*****************************************************************************
Opcode propeties (needed for optimizer)
*****************************************************************************}
{$ifndef NOOPT}
Type
{What an instruction can change}
TInsChange = (Ch_None);
{$endif}
{ resets all values of ref to defaults }
procedure reset_reference(var ref : treference);
{ set mostly used values of a new reference }
function new_reference(base : tregister;offset : longint) : preference;
function newreference(const r : treference) : preference;
procedure disposereference(var r : preference);
procedure set_location(var destloc : tlocation;const sourceloc : tlocation);
{*****************************************************************************
Init/Done
*****************************************************************************}
procedure InitCpu;
procedure DoneCpu;
implementation
uses
verbose;
procedure reset_reference(var ref : treference);
begin
FillChar(ref,sizeof(treference),0);
end;
function new_reference(base : tregister;offset : longint) : preference;
var
r : preference;
begin
new(r);
FillChar(r^,sizeof(treference),0);
r^.offset:=offset;
r^.alignment:=8;
new_reference:=r;
end;
function newreference(const r : treference) : preference;
var
p : preference;
begin
new(p);
p^:=r;
newreference:=p;
end;
procedure disposereference(var r : preference);
begin
dispose(r);
r:=Nil;
end;
procedure set_location(var destloc : tlocation;const sourceloc : tlocation);
begin
destloc:=sourceloc;
end;
{*****************************************************************************
Init/Done
*****************************************************************************}
procedure InitCpu;
begin
end;
procedure DoneCpu;
begin
end;
end.
{
$Log: cpubase.pas,v $
Revision 1.6 2002/11/17 18:26:16 mazen
* fixed a compilation bug accmulator-->accumulator, in definition of return_result_reg
Revision 1.5 2002/11/17 17:49:09 mazen
+ return_result_reg and function_result_reg are now used, in all plateforms, to pass functions result between called function and its caller. See the explanation of each one
Revision 1.4 2002/09/07 15:25:11 peter
* old logs removed and tabs fixed
Revision 1.3 2002/04/20 21:38:45 carl
* renamed some constants
}
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