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a0b9306652
fpc/compiler/sparc/cgcpu.pas
peter a0b9306652 * newra compiles for sparc
2003-06-12 16:43:07 +00:00

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{
$Id$
Copyright (c) 1998-2002 by Florian Klaempfl
This unit implements the code generator 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.
****************************************************************************
}
unit cgcpu;
{$i fpcdefs.inc}
interface
uses
cginfo,cgbase,cgobj,cg64f32,
aasmbase,aasmtai,aasmcpu,
cpubase,cpuinfo,
node,symconst,SymType;
type
TCgSparc=class(tcg)
protected
function IsSimpleRef(const ref:treference):boolean;
public
{ sparc special, needed by cg64 }
procedure handle_load_store(list:taasmoutput;isstore:boolean;op: tasmop;reg:tregister;ref: treference);
procedure handle_reg_const_reg(list:taasmoutput;op:Tasmop;src:tregister;a:aword;dst:tregister);
{ parameter }
procedure a_param_const(list:TAasmOutput;size:tcgsize;a:aword;const LocPara:TParaLocation);override;
procedure a_param_ref(list:TAasmOutput;sz:tcgsize;const r:TReference;const LocPara:TParaLocation);override;
procedure a_paramaddr_ref(list:TAasmOutput;const r:TReference;const LocPara:TParaLocation);override;
procedure a_call_name(list:TAasmOutput;const s:string);override;
procedure a_call_reg(list:TAasmOutput;Reg:TRegister);override;
{ General purpose instructions }
procedure a_op_const_reg(list:TAasmOutput;Op:TOpCG;size:tcgsize;a:AWord;reg:TRegister);override;
procedure a_op_reg_reg(list:TAasmOutput;Op:TOpCG;size:TCGSize;src, dst:TRegister);override;
procedure a_op_const_reg_reg(list:TAasmOutput;op:TOpCg;size:tcgsize;a:aword;src, dst:tregister);override;
procedure a_op_reg_reg_reg(list:TAasmOutput;op:TOpCg;size:tcgsize;src1, src2, dst:tregister);override;
{ move instructions }
procedure a_load_const_reg(list:TAasmOutput;size:tcgsize;a:aword;reg:tregister);override;
procedure a_load_const_ref(list:TAasmOutput;size:tcgsize;a:aword;const ref:TReference);override;
procedure a_load_reg_ref(list:TAasmOutput;FromSize,ToSize:TCgSize;reg:TRegister;const ref:TReference);override;
procedure a_load_ref_reg(list:TAasmOutput;FromSize,ToSize:TCgSize;const ref:TReference;reg:tregister);override;
procedure a_load_reg_reg(list:TAasmOutput;FromSize,ToSize:TCgSize;reg1,reg2:tregister);override;
procedure a_loadaddr_ref_reg(list:TAasmOutput;const ref:TReference;r:tregister);override;
{ fpu move instructions }
procedure a_loadfpu_reg_reg(list:TAasmOutput;reg1, reg2:tregister);override;
procedure a_loadfpu_ref_reg(list:TAasmOutput;size:tcgsize;const ref:TReference;reg:tregister);override;
procedure a_loadfpu_reg_ref(list:TAasmOutput;size:tcgsize;reg:tregister;const ref:TReference);override;
{ comparison operations }
procedure a_cmp_const_reg_label(list:TAasmOutput;size:tcgsize;cmp_op:topcmp;a:aword;reg:tregister;l:tasmlabel);override;
procedure a_cmp_reg_reg_label(list:TAasmOutput;size:tcgsize;cmp_op:topcmp;reg1,reg2:tregister;l:tasmlabel);override;
procedure a_jmp_always(List:TAasmOutput;l:TAsmLabel);override;
procedure a_jmp_cond(list:TAasmOutput;cond:TOpCmp;l:tasmlabel);{ override;}
procedure a_jmp_flags(list:TAasmOutput;const f:TResFlags;l:tasmlabel);override;
procedure g_flags2reg(list:TAasmOutput;Size:TCgSize;const f:tresflags;reg:TRegister);override;
procedure g_overflowCheck(List:TAasmOutput;const Loc:TLocation;def:TDef);override;
procedure g_stackframe_entry(list:TAasmOutput;localsize:LongInt);override;
procedure g_restore_all_registers(list:TAasmOutput;accused,acchiused:boolean);override;
procedure g_restore_frame_pointer(list:TAasmOutput);override;
procedure g_restore_standard_registers(list:taasmoutput;usedinproc:Tsupregset);override;
procedure g_return_from_proc(list:TAasmOutput;parasize:aword);override;
procedure g_save_all_registers(list : taasmoutput);override;
procedure g_save_standard_registers(list : taasmoutput; usedinproc : Tsupregset);override;
procedure g_concatcopy(list:TAasmOutput;const source,dest:TReference;len:aword;delsource,loadref:boolean);override;
class function reg_cgsize(const reg:tregister):tcgsize;override;
end;
TCg64Sparc=class(tcg64f32)
procedure a_op64_reg_reg(list:TAasmOutput;op:TOpCG;regsrc,regdst:TRegister64);override;
procedure a_op64_const_reg(list:TAasmOutput;op:TOpCG;value:qWord;regdst:TRegister64);override;
procedure get_64bit_ops(op:TOpCG;var op1,op2:TAsmOp);
end;
const
TOpCG2AsmOp : array[topcg] of TAsmOp=(
A_NONE,A_ADD,A_AND,A_UDIV,A_SDIV,A_UMUL,A_SMUL,A_NEG,A_NOT,A_OR,A_SRA,A_SRL,A_SLL,A_SUB,A_XOR
);
TOpCmp2AsmCond : array[topcmp] of TAsmCond=(
C_NONE,C_E,C_G,C_L,C_GE,C_LE,C_NE,C_BE,C_B,C_AE,C_A
);
implementation
uses
globtype,globals,verbose,systems,cutils,
symdef,symsym,defutil,paramgr,
rgobj,tgobj,rgcpu,cpupi;
{****************************************************************************
This is private property, keep out! :)
****************************************************************************}
function TCgSparc.IsSimpleRef(const ref:treference):boolean;
begin
if (ref.base.number=NR_NO) and (ref.index.number<>NR_NO) then
InternalError(2002100804);
result :=not(assigned(ref.symbol))and
(((ref.index.number = NR_NO) and
(ref.offset >= low(smallint)) and
(ref.offset <= high(smallint))) or
((ref.index.number <> NR_NO) and
(ref.offset = 0)));
end;
procedure tcgsparc.handle_load_store(list:taasmoutput;isstore:boolean;op: tasmop;reg:tregister;ref: treference);
var
tmpreg : tregister;
tmpref : treference;
begin
tmpreg.enum:=R_INTREGISTER;
tmpreg.number:=NR_NO;
{ Be sure to have a base register }
if (ref.base.number=NR_NO) then
begin
ref.base:=ref.index;
ref.index.number:=NR_NO;
end;
{ When need to use SETHI, do it first }
if assigned(ref.symbol) or
(ref.offset<simm13lo) or
(ref.offset>simm13hi) then
begin
{$ifdef newra}
tmpreg:=rg.getregisterint(list,OS_INT);
{$else}
tmpreg:=get_scratch_reg_int(list,OS_INT);
{$endif}
reference_reset(tmpref);
tmpref.symbol:=ref.symbol;
tmpref.offset:=ref.offset;
tmpref.symaddr:=refs_hi;
list.concat(taicpu.op_ref_reg(A_SETHI,tmpref,tmpreg));
{ Load the low part is left }
{$warning TODO Maybe not needed to load symbol}
tmpref.symaddr:=refs_lo;
list.concat(taicpu.op_reg_ref_reg(A_OR,tmpreg,tmpref,tmpreg));
{ The offset and symbol are loaded, reset in reference }
ref.offset:=0;
ref.symbol:=nil;
{ Only an index register or offset is allowed }
if tmpreg.number<>NR_NO then
begin
if (ref.index.number<>NR_NO) then
begin
list.concat(taicpu.op_reg_reg_reg(A_ADD,tmpreg,ref.index,tmpreg));
ref.index:=tmpreg;
end
else
begin
if ref.base.number<>NR_NO then
ref.index:=tmpreg
else
ref.base:=tmpreg;
end;
end;
end;
if (ref.base.number<>NR_NO) then
begin
if (ref.index.number<>NR_NO) and
((ref.offset<>0) or assigned(ref.symbol)) then
begin
if tmpreg.number=NR_NO then
begin
{$ifdef newra}
tmpreg:=rg.getregisterint(list,OS_INT);
{$else}
tmpreg:=get_scratch_reg_int(list,OS_INT);
{$endif}
end;
if (ref.index.number<>NR_NO) then
begin
list.concat(taicpu.op_reg_reg_reg(A_ADD,ref.base,ref.index,tmpreg));
ref.index.number:=NR_NO;
end;
end;
end;
if isstore then
list.concat(taicpu.op_reg_ref(op,reg,ref))
else
list.concat(taicpu.op_ref_reg(op,ref,reg));
if (tmpreg.number<>NR_NO) then
begin
{$ifdef newra}
rg.ungetregisterint(list,tmpreg);
{$else}
free_scratch_reg(list,tmpreg);
{$endif}
end;
end;
procedure tcgsparc.handle_reg_const_reg(list:taasmoutput;op:Tasmop;src:tregister;a:aword;dst:tregister);
var
tmpreg : tregister;
begin
if (longint(a)<simm13lo) or
(longint(a)>simm13hi) then
begin
{$ifdef newra}
tmpreg:=rg.getregisterint(list,OS_INT);
{$else}
tmpreg:=get_scratch_reg_int(list,OS_INT);
{$endif}
list.concat(taicpu.op_const_reg(A_SETHI,a shr 10,tmpreg));
list.concat(taicpu.op_reg_const_reg(A_OR,tmpreg,a and aword($3ff),tmpreg));
list.concat(taicpu.op_reg_reg_reg(op,src,tmpreg,dst));
{$ifdef newra}
rg.ungetregisterint(list,tmpreg);
{$else}
free_scratch_reg(list,tmpreg);
{$endif}
end
else
list.concat(taicpu.op_reg_const_reg(op,src,a,dst));
end;
{****************************************************************************
Assembler code
****************************************************************************}
function TCgSparc.reg_cgsize(const reg:tregister):tcgsize;
begin
result:=OS_32;
end;
procedure TCgSparc.a_param_const(list:TAasmOutput;size:tcgsize;a:aword;const LocPara:TParaLocation);
var
Ref:TReference;
begin
case locpara.loc of
LOC_REGISTER,LOC_CREGISTER:
a_load_const_reg(list,size,a,locpara.register);
LOC_REFERENCE:
begin
reference_reset(ref);
ref.base:=locpara.reference.index;
ref.offset:=locpara.reference.offset;
a_load_const_ref(list,size,a,ref);
end;
else
InternalError(2002122200);
end;
if locpara.sp_fixup<>0 then
InternalError(2002122201);
end;
procedure TCgSparc.a_param_ref(list:TAasmOutput;sz:TCgSize;const r:TReference;const LocPara:TParaLocation);
var
ref: treference;
tmpreg:TRegister;
begin
with LocPara do
case loc of
LOC_REGISTER,LOC_CREGISTER:
a_load_ref_reg(list,sz,sz,r,Register);
LOC_REFERENCE:
begin
{ Code conventions need the parameters being allocated in %o6+92. See
comment on g_stack_frame }
if locpara.sp_fixup<92 then
InternalError(2002081104);
reference_reset(ref);
ref.base:=locpara.reference.index;
ref.offset:=locpara.reference.offset;
{$ifdef newra}
tmpreg:=rg.getregisterint(list,OS_INT);
{$else}
tmpreg := get_scratch_reg_int(list,sz);
{$endif}
a_load_ref_reg(list,sz,sz,r,tmpreg);
a_load_reg_ref(list,sz,sz,tmpreg,ref);
{$ifdef newra}
rg.ungetregisterint(list,tmpreg);
{$else}
free_scratch_reg(list,tmpreg);
{$endif}
end;
LOC_FPUREGISTER,LOC_CFPUREGISTER:
begin
case sz of
OS_32:
a_loadfpu_ref_reg(list,OS_F32,r,locpara.register);
OS_64:
a_loadfpu_ref_reg(list,OS_F64,r,locpara.register);
else
internalerror(2002072801);
end;
end;
else
internalerror(2002081103);
end;
end;
procedure TCgSparc.a_paramaddr_ref(list:TAasmOutput;const r:TReference;const LocPara:TParaLocation);
var
Ref:TReference;
TmpReg:TRegister;
begin
case locpara.loc of
LOC_REGISTER,LOC_CREGISTER:
a_loadaddr_ref_reg(list,r,locpara.register);
LOC_REFERENCE:
begin
reference_reset(ref);
ref.base := locpara.reference.index;
ref.offset := locpara.reference.offset;
{$ifdef newra}
tmpreg:=rg.getaddressregister(list);
{$else}
tmpreg := get_scratch_reg_address(list);
{$endif}
a_loadaddr_ref_reg(list,r,tmpreg);
a_load_reg_ref(list,OS_ADDR,OS_ADDR,tmpreg,ref);
{$ifdef newra}
rg.ungetregisterint(list,tmpreg);
{$else}
free_scratch_reg(list,tmpreg);
{$endif}
end;
else
internalerror(2002080701);
end;
end;
procedure TCgSparc.a_call_name(list:TAasmOutput;const s:string);
begin
list.concat(taicpu.op_sym(A_CALL,objectlibrary.newasmsymbol(s)));
list.concat(taicpu.op_none(A_NOP));
end;
procedure TCgSparc.a_call_reg(list:TAasmOutput;Reg:TRegister);
begin
list.concat(taicpu.op_reg(A_CALL,reg));
end;
{********************** load instructions ********************}
procedure TCgSparc.a_load_const_reg(list : TAasmOutput;size : TCGSize;a : aword;reg : TRegister);
var
zeroreg : tregister;
begin
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
{ we don't use the set instruction here because it could be evalutated to two
instructions which would cause problems with the delay slot (FK) }
{ sethi allows to set the upper 22 bit, so we'll take full advantage of it }
if (a and aword($1fff))=0 then
list.concat(taicpu.op_const_reg(A_SETHI,a shr 10,reg))
else if (longint(a)>=simm13lo) and (longint(a)<=simm13hi) then
list.concat(taicpu.op_reg_const_reg(A_OR,zeroreg,a,reg))
else
begin
list.concat(taicpu.op_const_reg(A_SETHI,a shr 10,reg));
list.concat(taicpu.op_reg_const_reg(A_OR,reg,a and aword($3ff),reg));
end;
end;
procedure TCgSparc.a_load_const_ref(list : TAasmOutput;size : tcgsize;a : aword;const ref : TReference);
var
zeroreg : Tregister;
begin
if a=0 then
begin
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
a_load_reg_ref(list,size,size,zeroreg,ref);
end
else
inherited a_load_const_ref(list,size,a,ref);
end;
procedure TCgSparc.a_load_reg_ref(list:TAasmOutput;FromSize,ToSize:TCGSize;reg:tregister;const Ref:TReference);
var
op:tasmop;
begin
case ToSize of
{ signed integer registers }
OS_8,
OS_S8:
Op:=A_STB;
OS_16,
OS_S16:
Op:=A_STH;
OS_32,
OS_S32:
Op:=A_ST;
else
InternalError(2002122100);
end;
handle_load_store(list,true,op,reg,ref);
end;
procedure TCgSparc.a_load_ref_reg(list:TAasmOutput;FromSize,ToSize:TCgSize;const ref:TReference;reg:tregister);
var
op:tasmop;
begin
case Fromsize of
{ signed integer registers }
OS_S8:
Op:=A_LDSB;{Load Signed Byte}
OS_8:
Op:=A_LDUB;{Load Unsigned Bye}
OS_S16:
Op:=A_LDSH;{Load Signed Halfword}
OS_16:
Op:=A_LDUH;{Load Unsigned Halfword}
OS_S32,
OS_32:
Op:=A_LD;{Load Word}
else
InternalError(2002122101);
end;
handle_load_store(list,false,op,reg,ref);
end;
procedure TCgSparc.a_load_reg_reg(list:TAasmOutput;fromsize,tosize:tcgsize;reg1,reg2:tregister);
begin
if(reg1.enum<>R_INTREGISTER)or(reg1.number=NR_NO) then
InternalError(200303101);
if(reg2.enum<>R_INTREGISTER)or(reg2.number=NR_NO) then
InternalError(200303102);
if (reg1.Number<>reg2.Number) or
(tcgsize2size[tosize]<tcgsize2size[fromsize]) or
(
(tcgsize2size[tosize] = tcgsize2size[fromsize]) and
(tosize <> fromsize) and
not(fromsize in [OS_32,OS_S32])
) then
begin
{$warning TODO Sign extension}
case tosize of
OS_8,OS_S8:
a_op_const_reg_reg(list,OP_AND,tosize,$ff,reg1,reg2);
OS_16,OS_S16:
a_op_const_reg_reg(list,OP_AND,tosize,$ffff,reg1,reg2);
OS_32,OS_S32:
begin
if reg1.number<>reg2.number then
list.Concat(taicpu.op_reg_reg(A_MOV,reg1,reg2));
end;
else
internalerror(2002090901);
end;
end;
end;
procedure TCgSparc.a_loadaddr_ref_reg(list : TAasmOutput;const ref : TReference;r : tregister);
var
tmpref : treference;
hreg : tregister;
begin
if (r.number=ref.index.number) or (r.number=ref.base.number) then
begin
{$ifdef newra}
hreg:=rg.getaddressregister(list);
{$else}
hreg:=get_scratch_reg_address(list);
{$endif}
end
else
hreg:=r;
{ Need to use SETHI? }
if assigned(ref.symbol) or
(ref.offset<simm13lo) or
(ref.offset>simm13hi) then
begin
reference_reset(tmpref);
tmpref.symbol := ref.symbol;
tmpref.offset := ref.offset;
tmpref.symaddr := refs_hi;
list.concat(taicpu.op_ref_reg(A_SETHI,tmpref,hreg));
{ Only the low part is left }
tmpref.symaddr:=refs_lo;
list.concat(taicpu.op_reg_ref_reg(A_OR,hreg,tmpref,hreg));
end;
if ref.base.number<>NR_NO then
list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,ref.base,hreg));
if ref.index.number<>NR_NO then
list.concat(taicpu.op_reg_reg_reg(A_ADD,hreg,ref.base,hreg));
if hreg.number<>r.number then
begin
a_load_reg_reg(list,OS_INT,OS_INT,hreg,r);
{$ifdef newra}
rg.ungetaddressregister(list,hreg);
{$else}
free_scratch_reg(list,hreg);
{$endif}
end;
end;
procedure TCgSparc.a_loadfpu_reg_reg(list:TAasmOutput;reg1, reg2:tregister);
begin
list.concat(taicpu.op_reg_reg(A_FMOVs,reg1,reg2));
end;
procedure TCgSparc.a_loadfpu_ref_reg(list:TAasmOutput;size:tcgsize;const ref:TReference;reg:tregister);
const
FpuLoadInstr : Array[OS_F32..OS_F64] of TAsmOp =
(A_LDF,A_LDDF);
begin
{ several functions call this procedure with OS_32 or OS_64 }
{ so this makes life easier (FK) }
case size of
OS_32,OS_F32:
size:=OS_F32;
OS_64,OS_F64,OS_C64:
size:=OS_F64;
else
internalerror(200201121);
end;
handle_load_store(list,false,fpuloadinstr[size],reg,ref);
end;
procedure TCgSparc.a_loadfpu_reg_ref(list:TAasmOutput;size:tcgsize;reg:tregister;const ref:TReference);
const
FpuLoadInstr : Array[OS_F32..OS_F64] of TAsmOp =
(A_STF,A_STDF);
begin
{ several functions call this procedure with OS_32 or OS_64 }
{ so this makes life easier (FK) }
case size of
OS_32,OS_F32:
size:=OS_F32;
OS_64,OS_F64,OS_C64:
size:=OS_F64;
else
internalerror(200201121);
end;
handle_load_store(list,true,fpuloadinstr[size],reg,ref);
end;
procedure TCgSparc.a_op_const_reg(list:TAasmOutput;Op:TOpCG;size:tcgsize;a:AWord;reg:TRegister);
var
zeroreg : tregister;
begin
if Op in [OP_NEG,OP_NOT] then
internalerror(200306011);
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
if (a=0) then
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],reg,zeroreg,reg))
else
handle_reg_const_reg(list,TOpCG2AsmOp[op],reg,a,reg);
end;
procedure TCgSparc.a_op_reg_reg(list:TAasmOutput;Op:TOpCG;size:TCGSize;src, dst:TRegister);
begin
Case Op of
OP_NEG,
OP_NOT:
list.concat(taicpu.op_reg_reg(TOpCG2AsmOp[op],src,dst));
else
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],dst,src,dst));
end;
end;
procedure TCgSparc.a_op_const_reg_reg(list:TAasmOutput;op:TOpCg;size:tcgsize;a:aword;src, dst:tregister);
var
power : longInt;
begin
case op of
OP_IMUL :
begin
if not(cs_check_overflow in aktlocalswitches) and
ispowerof2(a,power) then
begin
{ can be done with a shift }
inherited a_op_const_reg_reg(list,op,size,a,src,dst);
exit;
end;
end;
OP_SUB,
OP_ADD :
begin
if (a=0) then
begin
a_load_reg_reg(list,size,size,src,dst);
exit;
end;
end;
end;
handle_reg_const_reg(list,TOpCG2AsmOp[op],src,a,dst);
end;
procedure TCgSparc.a_op_reg_reg_reg(list:TAasmOutput;op:TOpCg;size:tcgsize;src1, src2, dst:tregister);
begin
list.concat(taicpu.op_reg_reg_reg(TOpCG2AsmOp[op],src2,src1,dst));
end;
{*************** compare instructructions ****************}
procedure TCgSparc.a_cmp_const_reg_label(list:TAasmOutput;size:tcgsize;cmp_op:topcmp;a:aword;reg:tregister;l:tasmlabel);
var
zeroreg : tregister;
begin
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
if (a=0) then
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,reg,zeroreg,zeroreg))
else
handle_reg_const_reg(list,A_SUBcc,reg,a,zeroreg);
a_jmp_cond(list,cmp_op,l);
end;
procedure TCgSparc.a_cmp_reg_reg_label(list:TAasmOutput;size:tcgsize;cmp_op:topcmp;reg1,reg2:tregister;l:tasmlabel);
var
zeroreg : tregister;
begin
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,reg1,reg2,zeroreg));
a_jmp_cond(list,cmp_op,l);
end;
procedure TCgSparc.a_jmp_always(List:TAasmOutput;l:TAsmLabel);
begin
List.Concat(TAiCpu.op_sym(A_BA,objectlibrary.newasmsymbol(l.name)));
end;
procedure TCgSparc.a_jmp_cond(list:TAasmOutput;cond:TOpCmp;l:TAsmLabel);
var
ai:TAiCpu;
begin
ai:=TAiCpu.Op_sym(A_BA,l);
ai.SetCondition(TOpCmp2AsmCond[cond]);
list.Concat(ai);
list.Concat(TAiCpu.Op_none(A_NOP));
end;
procedure TCgSparc.a_jmp_flags(list:TAasmOutput;const f:TResFlags;l:tasmlabel);
var
ai:taicpu;
begin
ai := Taicpu.op_sym(A_BA,l);
ai.SetCondition(flags_to_cond(f));
list.Concat(ai);
list.Concat(TAiCpu.Op_none(A_NOP));
end;
procedure TCgSparc.g_flags2reg(list:TAasmOutput;Size:TCgSize;const f:tresflags;reg:TRegister);
var
ai : taicpu;
r : tregister;
begin
r.enum:=R_PSR;
ai:=Taicpu.Op_reg_reg(A_RDPSR,r,reg);
ai.SetCondition(flags_to_cond(f));
list.Concat(ai);
list.Concat(TAiCpu.Op_none(A_NOP));
end;
procedure TCgSparc.g_overflowCheck(List:TAasmOutput;const Loc:TLocation;def:TDef);
var
hl : tasmlabel;
r : Tregister;
begin
if not(cs_check_overflow in aktlocalswitches) then
exit;
objectlibrary.getlabel(hl);
if not((def.deftype=pointerdef)or
((def.deftype=orddef)and
(torddef(def).typ in [u64bit,u16bit,u32bit,u8bit,uchar,bool8bit,bool16bit,bool32bit]))) then
begin
//r.enum:=R_CR7;
//list.concat(taicpu.op_reg(A_MCRXR,r));
//a_jmp_cond(list,A_BA,C_OV,hl)
a_jmp_always(list,hl)
end
else
a_jmp_cond(list,OC_AE,hl);
a_call_name(list,'FPC_OVERFLOW');
a_label(list,hl);
end;
{ *********** entry/exit code and address loading ************ }
procedure TCgSparc.g_stackframe_entry(list:TAasmOutput;LocalSize:LongInt);
var
r : tregister;
begin
{ Althogh the SPARC architecture require only word alignment, software
convention and the operating system require every stack frame to be double word
aligned }
LocalSize:=align(LocalSize,8);
{ Execute the SAVE instruction to get a new register window and create a new
stack frame. In the "SAVE %i6,size,%i6" the first %i6 is related to the state
before execution of the SAVE instrucion so it is the caller %i6, when the %i6
after execution of that instruction is the called function stack pointer}
r.enum:=R_INTREGISTER;
r.number:=NR_STACK_POINTER_REG;
list.concat(Taicpu.Op_reg_const_reg(A_SAVE,r,aword(-LocalSize),r));
end;
procedure TCgSparc.g_restore_all_registers(list:TaasmOutput;accused,acchiused:boolean);
begin
{ The sparc port uses the sparc standard calling convetions so this function has no used }
end;
procedure TCgSparc.g_restore_frame_pointer(list:TAasmOutput);
begin
{ This function intontionally does nothing as frame pointer is restored in the
delay slot of the return instrucion done in g_return_from_proc}
end;
procedure TCgSparc.g_restore_standard_registers(list:taasmoutput;usedinproc:Tsupregset);
begin
{ The sparc port uses the sparc standard calling convetions so this function has no used }
end;
procedure TCgSparc.g_return_from_proc(list:TAasmOutput;parasize:aword);
begin
{ According to the SPARC ABI, the stack is cleared using the RESTORE instruction
which is genereted in the g_restore_frame_pointer. Notice that SPARC has no
real RETURN instruction and that JMPL is used instead. The JMPL instrucion have one
delay slot, so an inversion is possible such as
RET (=JMPL %i7+8,%g0)
RESTORE (=RESTORE %g0,0,%g0)
If no inversion we can use just
RESTORE (=RESTORE %g0,0,%g0)
RET (=JMPL %i7+8,%g0)
NOP
}
list.concat(Taicpu.op_none(A_RET));
{ We use trivial restore in the delay slot of the JMPL instruction, as we
already set result onto %i0 }
list.concat(Taicpu.op_none(A_RESTORE));
end;
procedure TCgSparc.g_save_all_registers(list : taasmoutput);
begin
{ The sparc port uses the sparc standard calling convetions so this function has no used }
end;
procedure TCgSparc.g_save_standard_registers(list : taasmoutput; usedinproc:Tsupregset);
begin
{ The sparc port uses the sparc standard calling convetions so this function has no used }
end;
{ ************* concatcopy ************ }
procedure TCgSparc.g_concatcopy(list:taasmoutput;const source,dest:treference;len:aword;delsource,loadref:boolean);
var
countreg: TRegister;
src, dst: TReference;
lab: tasmlabel;
count, count2: aword;
orgsrc, orgdst: boolean;
r:Tregister;
begin
if len > high(longint) then
internalerror(2002072704);
{ make sure short loads are handled as optimally as possible }
if not loadref then
begin
if (len <= 8) and (byte(len) in [1,2,4,8]) then
begin
if len < 8 then
begin
a_load_ref_ref(list,int_cgsize(len),int_cgsize(len),source,dest);
if delsource then
reference_release(list,source);
end
else
begin
r.enum:=R_F0;
a_reg_alloc(list,r);
a_loadfpu_ref_reg(list,OS_F64,source,r);
if delsource then
reference_release(list,source);
a_loadfpu_reg_ref(list,OS_F64,r,dest);
a_reg_dealloc(list,r);
end;
exit;
end;
end;
reference_reset(src);
reference_reset(dst);
{ load the address of source into src.base }
if loadref then
begin
{$ifdef newra}
src.base:=rg.getaddressregister(list);
{$else}
src.base := get_scratch_reg_address(list);
{$endif}
a_load_ref_reg(list,OS_32,OS_32,source,src.base);
orgsrc := false;
end
else
if not issimpleref(source) or
(
(source.index.number<>NR_NO) and
((source.offset+longint(len))>high(smallint))
) then
begin
{$ifdef newra}
src.base:=rg.getaddressregister(list);
{$else}
src.base := get_scratch_reg_address(list);
{$endif}
a_loadaddr_ref_reg(list,source,src.base);
orgsrc := false;
end
else
begin
src := source;
orgsrc := true;
end;
if not orgsrc and delsource then
reference_release(list,source);
{ load the address of dest into dst.base }
if not issimpleref(dest) or
(
(dest.index.number<>NR_NO) and
((dest.offset + longint(len)) > high(smallint))
) then
begin
{$ifdef newra}
dst.base:=rg.getaddressregister(list);
{$else}
dst.base := get_scratch_reg_address(list);
{$endif}
a_loadaddr_ref_reg(list,dest,dst.base);
orgdst := false;
end
else
begin
dst := dest;
orgdst := true;
end;
{ generate a loop }
count:=len div 8;
if count>4 then
begin
{ the offsets are zero after the a_loadaddress_ref_reg and just }
{ have to be set to 8. I put an Inc there so debugging may be }
{ easier (should offset be different from zero here, it will be }
{ easy to notice in the generated assembler }
inc(dst.offset,8);
inc(src.offset,8);
list.concat(taicpu.op_reg_const_reg(A_SUB,src.base,8,src.base));
list.concat(taicpu.op_reg_const_reg(A_SUB,dst.base,8,dst.base));
{$ifdef newra}
countreg:=rg.getregisterint(list,OS_INT);
{$else}
countreg := get_scratch_reg_int(list,OS_INT);
{$endif}
a_load_const_reg(list,OS_INT,count,countreg);
{ explicitely allocate R_O0 since it can be used safely here }
{ (for holding date that's being copied) }
r.enum:=R_F0;
a_reg_alloc(list,r);
objectlibrary.getlabel(lab);
a_label(list, lab);
list.concat(taicpu.op_reg_const_reg(A_SUB,countreg,1,countreg));
list.concat(taicpu.op_ref_reg(A_LDF,src,r));
list.concat(taicpu.op_reg_ref(A_STD,r,dst));
//a_jmp(list,A_BC,C_NE,0,lab);
{$ifdef newra}
rg.ungetregisterint(list,countreg);
{$else}
free_scratch_reg(list,countreg);
{$endif}
a_reg_dealloc(list,r);
len := len mod 8;
end;
{ unrolled loop }
count:=len and 7;
if count>0 then
begin
r.enum:=R_F0;
a_reg_alloc(list,r);
for count2 := 1 to count do
begin
a_loadfpu_ref_reg(list,OS_F64,src,r);
a_loadfpu_reg_ref(list,OS_F64,r,dst);
inc(src.offset,8);
inc(dst.offset,8);
end;
a_reg_dealloc(list,r);
len := len mod 8;
end;
if (len and 4) <> 0 then
begin
{$ifdef newra}
r:=rg.getregisterint(list,OS_INT);
{$else}
r.enum:=R_INTREGISTER;
r.number:=NR_O0;
a_reg_alloc(list,r);
{$endif}
a_load_ref_reg(list,OS_32,OS_32,src,r);
a_load_reg_ref(list,OS_32,OS_32,r,dst);
inc(src.offset,4);
inc(dst.offset,4);
{$ifdef newra}
rg.ungetregisterint(list,r);
{$else}
a_reg_dealloc(list,r);
{$endif}
end;
{ copy the leftovers }
if (len and 2) <> 0 then
begin
{$ifdef newra}
r:=rg.getregisterint(list,OS_INT);
{$else}
r.enum:=R_INTREGISTER;
r.number:=NR_O0;
a_reg_alloc(list,r);
{$endif}
a_load_ref_reg(list,OS_16,OS_16,src,r);
a_load_reg_ref(list,OS_16,OS_16,r,dst);
inc(src.offset,2);
inc(dst.offset,2);
{$ifdef newra}
rg.ungetregisterint(list,r);
{$else}
a_reg_dealloc(list,r);
{$endif}
end;
if (len and 1) <> 0 then
begin
{$ifdef newra}
r:=rg.getregisterint(list,OS_INT);
{$else}
r.enum:=R_INTREGISTER;
r.number:=NR_O0;
a_reg_alloc(list,r);
{$endif}
a_load_ref_reg(list,OS_8,OS_8,src,r);
a_load_reg_ref(list,OS_8,OS_8,r,dst);
{$ifdef newra}
rg.ungetregisterint(list,r);
{$else}
a_reg_dealloc(list,r);
{$endif}
end;
if orgsrc then
begin
if delsource then
reference_release(list,source);
end
else
{$ifdef newra}
rg.ungetregisterint(list,src.base);
{$else}
free_scratch_reg(list,src.base);
{$endif}
if not orgdst then
{$ifdef newra}
rg.ungetregisterint(list,dst.base);
{$else}
free_scratch_reg(list,dst.base);
{$endif}
end;
{****************************************************************************
TCG64Sparc
****************************************************************************}
procedure TCg64Sparc.get_64bit_ops(op:TOpCG;var op1,op2:TAsmOp);
begin
case op of
OP_ADD :
begin
op1:=A_ADD;
op2:=A_ADDX;
end;
OP_SUB :
begin
op1:=A_SUB;
op2:=A_SUBX;
end;
OP_XOR :
begin
op1:=A_XOR;
op2:=A_XOR;
end;
OP_OR :
begin
op1:=A_OR;
op2:=A_OR;
end;
OP_AND :
begin
op1:=A_AND;
op2:=A_AND;
end;
OP_NOT :
begin
op1:=A_NOT;
op2:=A_NOT;
end;
else
internalerror(200203241);
end;
end;
procedure TCg64Sparc.a_op64_reg_reg(list:TAasmOutput;op:TOpCG;regsrc,regdst:TRegister64);
var
zeroreg : tregister;
op1,op2 : TAsmOp;
begin
case op of
OP_NEG :
begin
zeroreg.enum:=R_INTREGISTER;
zeroreg.number:=NR_G0;
list.concat(taicpu.op_reg_reg_reg(A_XNOR,zeroreg,regsrc.reghi,regdst.reghi));
list.concat(taicpu.op_reg_reg_reg(A_SUBcc,zeroreg,regsrc.reglo,regdst.reglo));
list.concat(taicpu.op_reg_const_reg(A_ADDX,regdst.reglo,aword(-1),regdst.reglo));
exit;
end;
end;
get_64bit_ops(op,op1,op2);
list.concat(taicpu.op_reg_reg_reg(op1,regdst.reglo,regsrc.reglo,regdst.reglo));
list.concat(taicpu.op_reg_reg_reg(op2,regdst.reghi,regsrc.reghi,regdst.reghi));
end;
procedure TCg64Sparc.a_op64_const_reg(list:TAasmOutput;op:TOpCG;value:qWord;regdst:TRegister64);
var
op1,op2:TAsmOp;
begin
case op of
OP_NEG,
OP_NOT :
internalerror(200306017);
end;
get_64bit_ops(op,op1,op2);
tcgsparc(cg).handle_reg_const_reg(list,op1,regdst.reglo,lo(value),regdst.reglo);
tcgsparc(cg).handle_reg_const_reg(list,op1,regdst.reghi,hi(value),regdst.reghi);
end;
begin
cg:=TCgSparc.Create;
cg64:=TCg64Sparc.Create;
end.
{
$Log$
Revision 1.58 2003-06-12 16:43:07 peter
* newra compiles for sparc
Revision 1.57 2003/06/04 20:59:37 mazen
+ added size of destination in code gen methods
+ making g_overflowcheck declaration same as
ancestor's method declaration
Revision 1.56 2003/06/01 21:38:06 peter
* getregisterfpu size parameter added
* op_const_reg size parameter added
* sparc updates
Revision 1.55 2003/06/01 01:04:35 peter
* reference fixes
Revision 1.54 2003/05/31 01:00:51 peter
* register fixes
Revision 1.53 2003/05/30 23:57:08 peter
* more sparc cleanup
* accumulator removed, splitted in function_return_reg (called) and
function_result_reg (caller)
Revision 1.52 2003/05/28 23:18:31 florian
* started to fix and clean up the sparc port
Revision 1.51 2003/05/26 22:04:57 mazen
* added 64 bit value support to fix a problem in RTL
Revision 1.50 2003/05/23 22:33:48 florian
* fix some small flaws which prevent sparc linux system unit from compiling
* some reformatting done
Revision 1.49 2003/05/22 16:11:22 florian
* fixed sparc compilation partially
Revision 1.48 2003/05/07 15:04:30 mazen
* invalid genrated code for CASE statement fixed
Revision 1.47 2003/05/06 20:25:20 mazen
* Invalid genrated code : A_JMPL changed to A_BA
Revision 1.46 2003/05/06 15:02:40 mazen
* fixed a bug in a_load_const_reg related to max 13bit value limit
for immediat value ==> use of A_SETHI for greater values
Revision 1.45 2003/04/29 11:58:21 mazen
* fixed bug of output generated assembler for a_cmp_const_ref_label
Revision 1.44 2003/04/28 09:44:42 mazen
+ NOP after conditional jump instruction to prevent delay slot execution
Revision 1.43 2003/04/27 11:21:36 peter
* aktprocdef renamed to current_procdef
* procinfo renamed to current_procinfo
* procinfo will now be stored in current_module so it can be
cleaned up properly
* gen_main_procsym changed to create_main_proc and release_main_proc
to also generate a tprocinfo structure
* fixed unit implicit initfinal
Revision 1.42 2003/03/16 20:45:45 mazen
* fixing an LD operation without refernce in loading address parameters
Revision 1.41 2003/03/10 21:59:54 mazen
* fixing index overflow in handling new registers arrays.
Revision 1.40 2003/02/25 21:41:44 mazen
* code re-aligned 2 spaces
Revision 1.39 2003/02/19 22:00:16 daniel
* Code generator converted to new register notation
- Horribily outdated todo.txt removed
Revision 1.38 2003/02/18 22:00:20 mazen
* asm condition generation modified by TAiCpu.SetCondition
Revision 1.37 2003/02/05 21:48:34 mazen
* fixing run time errors related to unimplemented abstract methods in CG
+ giving empty emplementations for some RTL functions
Revision 1.36 2003/01/22 22:30:03 mazen
- internal errors rmoved from a_loar_reg_reg when reg sizes differs from 32
Revision 1.35 2003/01/20 22:21:36 mazen
* many stuff related to RTL fixed
Revision 1.34 2003/01/08 18:43:58 daniel
* Tregister changed into a record
Revision 1.33 2003/01/07 22:03:40 mazen
* adding unequaln node support to sparc compiler
Revision 1.32 2003/01/06 22:51:47 mazen
* fixing bugs related to load_reg_ref
Revision 1.31 2003/01/05 21:32:35 mazen
* fixing several bugs compiling the RTL
Revision 1.30 2003/01/05 13:36:53 florian
* x86-64 compiles
+ very basic support for float128 type (x86-64 only)
Revision 1.29 2002/12/25 20:59:49 mazen
- many emitXXX removed from cga.pas in order to remove that file.
Revision 1.28 2002/12/22 19:26:31 mazen
* many internal errors related to unimplemented nodes are fixed
Revision 1.27 2002/12/21 23:21:47 mazen
+ added support for the shift nodes
+ added debug output on screen with -an command line option
Revision 1.26 2002/11/25 19:21:49 mazen
* fixed support of nSparcInline
Revision 1.25 2002/11/25 17:43:28 peter
* splitted defbase in defutil,symutil,defcmp
* merged isconvertable and is_equal into compare_defs(_ext)
* made operator search faster by walking the list only once
Revision 1.24 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 1.23 2002/11/10 19:07:46 mazen
* SPARC calling mechanism almost OK (as in GCC./mppcsparc )
Revision 1.22 2002/11/06 11:31:24 mazen
* op_reg_reg_reg don't need any more a TOpSize parameter
Revision 1.21 2002/11/05 16:15:00 mazen
*** empty log message ***
Revision 1.20 2002/11/03 20:22:40 mazen
* parameter handling updated
Revision 1.19 2002/10/28 20:59:17 mazen
* TOpSize values changed S_L --> S_SW
Revision 1.18 2002/10/22 13:43:01 mazen
- cga.pas redueced to an empty unit
Revision 1.17 2002/10/20 19:01:38 mazen
+ op_raddr_reg and op_caddr_reg added to fix functions prologue
Revision 1.16 2002/10/13 21:46:07 mazen
* assembler output format fixed
Revision 1.15 2002/10/11 13:35:14 mazen
*** empty log message ***
Revision 1.14 2002/10/10 19:57:51 mazen
* Just to update repsitory
Revision 1.13 2002/10/10 15:10:39 mazen
* Internal error fixed, but usually i386 parameter model used
Revision 1.12 2002/10/08 17:17:03 mazen
*** empty log message ***
Revision 1.11 2002/10/07 20:33:04 mazen
word alignement modified in g_stack_frame
Revision 1.10 2002/10/04 21:57:42 mazen
* register allocation for parameters now done in cpupara, but InternalError(200109223) in cgcpu.pas:1053 is still not fixed du to location_force problem in ncgutils.pas:419
Revision 1.9 2002/10/02 22:20:28 mazen
+ out registers allocator for the first 6 scalar parameters which must be passed into %o0..%o5
Revision 1.8 2002/10/01 21:35:58 mazen
+ procedures exiting prologue added and stack frame now restored in the delay slot of the return (JMPL) instruction
Revision 1.7 2002/10/01 21:06:29 mazen
attinst.inc --> strinst.inc
Revision 1.6 2002/10/01 17:41:50 florian
* fixed log and id
}
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