mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-08-16 17:59:25 +02:00
+ some messy m68k changes (first attempt to implement a_param_*)
git-svn-id: trunk@5782 -
This commit is contained in:
Károly Balogh
parent
a95c2220cc
commit
e5249a8b56
@ -299,6 +299,9 @@ interface
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s:=gas_op2str[op]+cond2str[taicpu(hp).condition]+gas_opsize2str[taicpu(hp).opsize]
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else
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s:=gas_op2str[op]+gas_opsize2str[taicpu(hp).opsize];
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if op = A_FMOVE then begin
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writeln('fmove! opsize:',dword(taicpu(hp).opsize));
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end;
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getopcodestring:=s;
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end;
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@ -38,9 +38,18 @@ unit cgcpu;
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tcg68k = class(tcg)
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procedure init_register_allocators;override;
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procedure done_register_allocators;override;
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procedure a_param_reg(list : TAsmList;size : tcgsize;r : tregister;const cgpara : tcgpara);override;
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procedure a_param_const(list : TAsmList;size : tcgsize;a : aint;const cgpara : tcgpara);override;
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procedure a_param_ref(list : TAsmList;size : tcgsize;const r : treference;const cgpara : tcgpara);override;
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procedure a_paramaddr_ref(list : TAsmList;const r : treference;const cgpara : tcgpara);override;
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procedure a_call_name(list : TAsmList;const s : string);override;
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procedure a_call_reg(list : TAsmList;reg : tregister);override;
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procedure a_load_const_reg(list : TAsmList;size : tcgsize;a : aint;register : tregister);override;
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procedure a_load_const_ref(list : TAsmList; tosize: tcgsize; a : aint;const ref : treference);override;
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procedure a_load_reg_ref(list : TAsmList;fromsize,tosize : tcgsize;register : tregister;const ref : treference);override;
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procedure a_load_reg_reg(list : TAsmList;fromsize,tosize : tcgsize;reg1,reg2 : tregister);override;
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procedure a_load_ref_reg(list : TAsmList;fromsize,tosize : tcgsize;const ref : treference;register : tregister);override;
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@ -48,12 +57,16 @@ unit cgcpu;
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procedure a_loadfpu_reg_reg(list: TAsmList; size: tcgsize; reg1, reg2: tregister); override;
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procedure a_loadfpu_ref_reg(list: TAsmList; size: tcgsize; const ref: treference; reg: tregister); override;
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procedure a_loadfpu_reg_ref(list: TAsmList; size: tcgsize; reg: tregister; const ref: treference); override;
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procedure a_loadmm_reg_reg(list: TAsmList;fromsize,tosize : tcgsize; reg1, reg2: tregister;shuffle : pmmshuffle); override;
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procedure a_loadmm_ref_reg(list: TAsmList;fromsize,tosize : tcgsize; const ref: treference; reg: tregister;shuffle : pmmshuffle); override;
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procedure a_loadmm_reg_ref(list: TAsmList;fromsize,tosize : tcgsize; reg: tregister; const ref: treference;shuffle : pmmshuffle); override;
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procedure a_parammm_reg(list: TAsmList; size: tcgsize; reg: tregister;const locpara : TCGPara;shuffle : pmmshuffle); override;
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procedure a_op_const_reg(list : TAsmList; Op: TOpCG; size: tcgsize; a: aint; reg: TRegister); override;
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procedure a_op_const_ref(list : TAsmList; Op: TOpCG; size: TCGSize; a: aint; const ref: TReference); override;
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procedure a_op_reg_reg(list : TAsmList; Op: TOpCG; size: TCGSize; reg1, reg2: TRegister); override;
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procedure a_cmp_const_reg_label(list : TAsmList;size : tcgsize;cmp_op : topcmp;a : aint;reg : tregister;
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l : tasmlabel);override;
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procedure a_cmp_reg_reg_label(list : TAsmList;size : tcgsize;cmp_op : topcmp;reg1,reg2 : tregister;l : tasmlabel); override;
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@ -180,6 +193,17 @@ unit cgcpu;
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{****************************************************************************}
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{ TCG68K }
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{****************************************************************************}
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function use_push(const cgpara:tcgpara):boolean;
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begin
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result:=(not use_fixed_stack) and
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assigned(cgpara.location) and
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(cgpara.location^.loc=LOC_REFERENCE) and
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(cgpara.location^.reference.index=NR_STACK_POINTER_REG);
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end;
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procedure tcg68k.init_register_allocators;
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begin
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inherited init_register_allocators;
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@ -204,6 +228,166 @@ unit cgcpu;
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end;
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procedure tcg68k.a_param_reg(list : TAsmList;size : tcgsize;r : tregister;const cgpara : tcgpara);
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var
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pushsize : tcgsize;
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begin
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writeln('a_param_reg');
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{
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check_register_size(size,r);
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if use_push(cgpara) then
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begin
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cgpara.check_simple_location;
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if tcgsize2size[cgpara.location^.size]>cgpara.alignment then
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pushsize:=cgpara.location^.size
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else
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pushsize:=int_cgsize(cgpara.alignment);
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list.concat(taicpu.op_reg(A_PUSH,tcgsize2opsize[pushsize],makeregsize(list,r,pushsize)));
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end
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else
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}
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// inherited a_param_reg(list,size,r,cgpara);
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end;
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procedure tcg68k.a_param_const(list : TAsmList;size : tcgsize;a : aint;const cgpara : tcgpara);
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var
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pushsize : tcgsize;
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ref : treference;
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begin
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writeln('a_param_const');
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{ remove "not" to trigger the location bug (KB) }
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if not use_push(cgpara) then
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begin
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cgpara.check_simple_location;
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if tcgsize2size[cgpara.location^.size]>cgpara.alignment then
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pushsize:=cgpara.location^.size
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else
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pushsize:=int_cgsize(cgpara.alignment);
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reference_reset_base(ref, NR_STACK_POINTER_REG, 0);
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ref.direction := dir_dec;
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list.concat(taicpu.op_const_ref(A_MOVE,tcgsize2opsize[pushsize],a,ref));
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end
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else
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inherited a_param_const(list,size,a,cgpara);
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end;
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procedure tcg68k.a_param_ref(list : TAsmList;size : tcgsize;const r : treference;const cgpara : tcgpara);
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(*
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procedure pushdata(paraloc:pcgparalocation;ofs:aint);
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var
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pushsize : tcgsize;
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tmpreg : tregister;
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href : treference;
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begin
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if not assigned(paraloc) then
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exit;
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if (paraloc^.loc<>LOC_REFERENCE) or
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(paraloc^.reference.index<>NR_STACK_POINTER_REG) or
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(tcgsize2size[paraloc^.size]>sizeof(aint)) then
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internalerror(200501162);
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{ Pushes are needed in reverse order, add the size of the
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current location to the offset where to load from. This
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prevents wrong calculations for the last location when
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the size is not a power of 2 }
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if assigned(paraloc^.next) then
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pushdata(paraloc^.next,ofs+tcgsize2size[paraloc^.size]);
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{ Push the data starting at ofs }
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href:=r;
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inc(href.offset,ofs);
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if tcgsize2size[paraloc^.size]>cgpara.alignment then
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pushsize:=paraloc^.size
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else
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pushsize:=int_cgsize(cgpara.alignment);
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if tcgsize2size[paraloc^.size]<cgpara.alignment then
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begin
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tmpreg:=getintregister(list,pushsize);
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a_load_ref_reg(list,paraloc^.size,pushsize,href,tmpreg);
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list.concat(taicpu.op_reg(A_PUSH,TCgsize2opsize[pushsize],tmpreg));
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end
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else
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list.concat(taicpu.op_ref(A_PUSH,TCgsize2opsize[pushsize],href));
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end;
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*)
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var
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len : aint;
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href : treference;
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begin
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writeln('a_param_ref');
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{
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{ cgpara.size=OS_NO requires a copy on the stack }
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if use_push(cgpara) then
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begin
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{ Record copy? }
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if (cgpara.size in [OS_NO,OS_F64]) or (size=OS_NO) then
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begin
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cgpara.check_simple_location;
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len:=align(cgpara.intsize,cgpara.alignment);
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g_stackpointer_alloc(list,len);
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reference_reset_base(href,NR_STACK_POINTER_REG,0);
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g_concatcopy(list,r,href,len);
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end
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else
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begin
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if tcgsize2size[cgpara.size]<>tcgsize2size[size] then
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internalerror(200501161);
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{ We need to push the data in reverse order,
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therefor we use a recursive algorithm }
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pushdata(cgpara.location,0);
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end
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end
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else
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}
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inherited a_param_ref(list,size,r,cgpara);
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end;
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procedure tcg68k.a_paramaddr_ref(list : TAsmList;const r : treference;const cgpara : tcgpara);
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var
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tmpreg : tregister;
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opsize : topsize;
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begin
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writeln('a_paramaddr_ref');
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with r do
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begin
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{
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if (segment<>NR_NO) then
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cgmessage(cg_e_cant_use_far_pointer_there);
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if use_push(cgpara) then
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begin
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cgpara.check_simple_location;
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opsize:=tcgsize2opsize[OS_ADDR];
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if (segment=NR_NO) and (base=NR_NO) and (index=NR_NO) then
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begin
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if assigned(symbol) then
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list.concat(Taicpu.Op_sym_ofs(A_PUSH,opsize,symbol,offset))
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else
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list.concat(Taicpu.Op_const(A_PUSH,opsize,offset));
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end
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else if (segment=NR_NO) and (base=NR_NO) and (index<>NR_NO) and
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(offset=0) and (scalefactor=0) and (symbol=nil) then
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list.concat(Taicpu.Op_reg(A_PUSH,opsize,index))
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else if (segment=NR_NO) and (base<>NR_NO) and (index=NR_NO) and
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(offset=0) and (symbol=nil) then
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list.concat(Taicpu.Op_reg(A_PUSH,opsize,base))
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else
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begin
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tmpreg:=getaddressregister(list);
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a_loadaddr_ref_reg(list,r,tmpreg);
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list.concat(taicpu.op_reg(A_PUSH,opsize,tmpreg));
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end;
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end
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else
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}
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// inherited a_paramaddr_ref(list,r,cgpara);
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end;
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end;
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function tcg68k.fixref(list: TAsmList; var ref: treference): boolean;
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begin
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@ -263,6 +447,8 @@ unit cgcpu;
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procedure tcg68k.a_load_const_reg(list : TAsmList;size : tcgsize;a : aint;register : tregister);
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begin
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writeln('a_load_const_reg');
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if getregtype(register)=R_ADDRESSREGISTER then
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begin
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list.concat(taicpu.op_const_reg(A_MOVE,S_L,longint(a),register))
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@ -278,6 +464,13 @@ unit cgcpu;
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list.concat(taicpu.op_const_reg(A_MOVE,S_L,longint(a),register))
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end;
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end;
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procedure tcg68k.a_load_const_ref(list : TAsmList; tosize: tcgsize; a : aint;const ref : treference);
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begin
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writeln('a_load_const_ref');
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list.concat(taicpu.op_const_ref(A_MOVE,S_L,longint(a),ref));
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end;
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procedure tcg68k.a_load_reg_ref(list : TAsmList;fromsize,tosize : tcgsize;register : tregister;const ref : treference);
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@ -286,6 +479,7 @@ unit cgcpu;
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begin
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href := ref;
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fixref(list,href);
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writeln('a_load_reg_ref');
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{ move to destination reference }
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list.concat(taicpu.op_reg_ref(A_MOVE,TCGSize2OpSize[fromsize],register,href));
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end;
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@ -542,14 +736,38 @@ unit cgcpu;
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end;
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end;
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OP_XOR :
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Begin
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list.concat(taicpu.op_const_reg(A_EORI,S_L,a, reg));
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begin
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list.concat(taicpu.op_const_reg(A_EORI,S_L,a, reg));
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end;
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else
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internalerror(20020729);
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end;
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end;
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procedure tcg68k.a_op_const_ref(list : TAsmList; Op: TOpCG; size: TCGSize; a: aint; const ref: TReference);
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var
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opcode: tasmop;
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begin
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writeln('a_op_const_ref');
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optimize_op_const(op, a);
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opcode := topcg2tasmop[op];
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case op of
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OP_NONE :
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begin
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{ opcode was optimized away }
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end;
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OP_MOVE :
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begin
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{ Optimized, replaced with a simple load }
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a_load_const_ref(list,size,a,ref);
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end;
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else
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begin
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internalerror(2007010101);
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end;
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end;
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end;
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procedure tcg68k.a_op_reg_reg(list : TAsmList; Op: TOpCG; size: TCGSize; reg1, reg2: TRegister);
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var
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@ -1007,11 +1225,22 @@ unit cgcpu;
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end;
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procedure tcg68k.g_proc_entry(list : TAsmList;localsize : longint;nostackframe:boolean);
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procedure tcg68k.g_proc_entry(list: TAsmList; localsize: longint; nostackframe:boolean);
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var
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r,rsp:Tregister;
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ref : treference;
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r,rsp: TRegister;
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ref : TReference;
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begin
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writeln('proc entry, localsize:',localsize);
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if not nostackframe then
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begin
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if (localsize<>0) then localsize:=-localsize;
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// size can't be negative
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if (localsize>0) then internalerror(2006122601);
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list.concat(taicpu.op_reg_const(A_LINK,S_W,NR_FRAME_POINTER_REG,localsize));
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end;
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end;
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(*
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r:=NR_FRAME_POINTER_REG;
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rsp:=NR_STACK_POINTER_REG;
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if localsize<>0 then
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@ -1030,7 +1259,8 @@ unit cgcpu;
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list.concat(taicpu.op_reg_ref(A_MOVE,S_L,r,ref));
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list.concat(taicpu.op_reg_reg(A_MOVE,S_L,rsp,r));
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end;
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end;
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*)
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// end;
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{ procedure tcg68k.g_restore_frame_pointer(list : TAsmList);
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@ -1042,14 +1272,40 @@ unit cgcpu;
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end;
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}
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procedure tcg68k.g_proc_exit(list : TAsmList;parasize:longint;nostackframe:boolean);
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procedure tcg68k.g_proc_exit(list : TAsmList; parasize: longint; nostackframe: boolean);
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var
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r,hregister : tregister;
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ref : treference;
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begin
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// r,hregister : TRegister;
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localsize: aint;
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spr : TRegister;
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fpr : TRegister;
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ref : TReference;
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begin
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if not nostackframe then
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begin
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localsize := current_procinfo.calc_stackframe_size;
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writeln('proc exit with stackframe, size:',localsize);
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list.concat(taicpu.op_reg(A_UNLK,S_NO,NR_FRAME_POINTER_REG));
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if (localsize<>0) then
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begin
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{ only 68020+ supports RTD, so this needs another code path
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for 68000 and Coldfire (KB) }
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{$WARNING 68020+ only code generation, without fallback}
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localsize+=4;
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list.concat(taicpu.op_const(A_RTD,S_NO,localsize));
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end
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else
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list.concat(taicpu.op_none(A_RTS,S_NO));
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end
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else
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begin
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writeln('proc exit, no stackframe');
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list.concat(taicpu.op_none(A_RTS,S_NO));
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end;
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// writeln('g_proc_exit');
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{ Routines with the poclearstack flag set use only a ret.
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also routines with parasize=0 }
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also routines with parasize=0 }
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(*
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if current_procinfo.procdef.proccalloption in clearstack_pocalls then
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begin
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{ complex return values are removed from stack in C code PM }
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@ -1097,6 +1353,7 @@ unit cgcpu;
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list.concat(taicpu.op_none(A_RTS,S_NO));
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end;
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end;
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*)
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end;
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@ -303,6 +303,7 @@ unit cpupara;
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if (p.proccalloption in [pocall_cdecl,pocall_cppdecl]) and
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is_array_of_const(paradef) then
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begin
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writeln('loc register');
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paraloc:=hp.paraloc[side].add_location;
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{ hack: the paraloc must be valid, but is not actually used }
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paraloc^.loc:=LOC_REGISTER;
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@ -316,6 +317,7 @@ unit cpupara;
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is_open_array(paradef) or
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is_array_of_const(paradef) then
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begin
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writeln('loc register');
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paradef:=voidpointertype;
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loc:=LOC_REGISTER;
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paracgsize := OS_ADDR;
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@ -337,6 +339,7 @@ unit cpupara;
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paralen := tcgsize2size[OS_ADDR];
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end;
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end;
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hp.paraloc[side].alignment:=std_param_align;
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hp.paraloc[side].size:=paracgsize;
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||||
hp.paraloc[side].intsize:=paralen;
|
||||
@ -384,7 +387,7 @@ unit cpupara;
|
||||
else { LOC_REFERENCE }
|
||||
}
|
||||
begin
|
||||
// writeln('loc reference');
|
||||
writeln('loc reference');
|
||||
paraloc^.loc:=LOC_REFERENCE;
|
||||
paraloc^.size:=int_cgsize(paralen);
|
||||
if (side = callerside) then
|
||||
|
||||
Loading…
Reference in New Issue
Block a user