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904 lines
34 KiB
ObjectPascal
904 lines
34 KiB
ObjectPascal
{
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Copyright (c) 2003 by Florian Klaempfl
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This unit implements an asm for the Z80
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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{ This unit implements the assembler writer for the sdcc-sdasz80 assembler:
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http://sdcc.sourceforge.net/
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}
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unit agsdasz80;
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{$i fpcdefs.inc}
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interface
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uses
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globtype,systems,
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aasmbase,aasmtai,aasmdata,aasmcpu,
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assemble,
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cpubase;
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type
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{ TSdccSdasZ80Assembler }
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TSdccSdasZ80Assembler=class(TExternalAssembler)
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private
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procedure WriteRealConstAsBytes(hp: tai_realconst; const dbdir: string; do_line: boolean);
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function sectionname(atype:TAsmSectiontype;const aname:string;aorder:TAsmSectionOrder):string;
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procedure WriteSection(atype:TAsmSectiontype;const aname:string;aorder:TAsmSectionOrder;secalign:longint;
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secflags:TSectionFlags=[];secprogbits:TSectionProgbits=SPB_None);
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procedure WriteInstruction(hp: taicpu);
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procedure WriteOper(const o:toper; opcode: tasmop;ops:longint;dest : boolean);
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procedure WriteOper_jmp(const o:toper; ai : taicpu);
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procedure WriteExternals;
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public
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procedure WriteTree(p : TAsmList); override;
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procedure WriteAsmList;override;
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function MakeCmdLine: TCmdStr; override;
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end;
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implementation
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uses
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cutils,globals,verbose,
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cpuinfo,
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cgbase,cgutils,
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{$ifdef FPC_SOFT_FPUX80}
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sfpux80,
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{$endif FPC_SOFT_FPUX80}
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finput;
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const
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line_length = 70;
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max_tokens : longint = 25;
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ait_const2str : array[aitconst_128bit..aitconst_64bit_unaligned] of string[20]=(
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#9''#9,#9'FIXMEDQ'#9,#9'FIXMEDD'#9,#9'.dw'#9,#9'.db'#9,
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#9'FIXMESLEB',#9'FIXEMEULEB',
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#9'FIXMEDD RVA'#9,#9'FIXMEDD SECREL32'#9,
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#9'FIXME',#9'FIXME',#9'FIXME',#9'FIXME',
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#9'.dw'#9,#9'FIXMEDD'#9,#9'FIXMEDQ'#9
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);
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procedure TSdccSdasZ80Assembler.WriteRealConstAsBytes(hp: tai_realconst; const dbdir: string; do_line: boolean);
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var
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pdata: pbyte;
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index, step, swapmask, count: longint;
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ssingle: single;
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ddouble: double;
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ccomp: comp;
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{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
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eextended: extended;
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{$else}
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{$ifdef FPC_SOFT_FPUX80}
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eextended: floatx80;
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{$endif}
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{$endif cpuextended}
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begin
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if do_line then
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begin
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case tai_realconst(hp).realtyp of
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aitrealconst_s32bit:
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writer.AsmWriteLn(asminfo^.comment+'value: '+single2str(tai_realconst(hp).value.s32val));
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aitrealconst_s64bit:
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writer.AsmWriteLn(asminfo^.comment+'value: '+double2str(tai_realconst(hp).value.s64val));
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{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
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{ can't write full 80 bit floating point constants yet on non-x86 }
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aitrealconst_s80bit:
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writer.AsmWriteLn(asminfo^.comment+'value: '+extended2str(tai_realconst(hp).value.s80val));
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{$else}
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{$ifdef FPC_SOFT_FPUX80}
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{$push}{$warn 6018 off} { Unreachable code due to compile time evaluation }
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aitrealconst_s80bit:
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begin
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if sizeof(tai_realconst(hp).value.s80val) = sizeof(double) then
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writer.AsmWriteLn(asminfo^.comment+'value: '+double2str(tai_realconst(hp).value.s80val))
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else if sizeof(tai_realconst(hp).value.s80val) = sizeof(single) then
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writer.AsmWriteLn(asminfo^.comment+'value: '+single2str(tai_realconst(hp).value.s80val))
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else
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internalerror(2017091904);
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end;
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{$pop}
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{$endif}
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{$endif cpuextended}
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aitrealconst_s64comp:
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writer.AsmWriteLn(asminfo^.comment+'value: '+extended2str(tai_realconst(hp).value.s64compval));
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else
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internalerror(2014050601);
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end;
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end;
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writer.AsmWrite(dbdir);
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{ generic float writing code: get start address of value, then write
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byte by byte. Can't use fields directly, because e.g ts64comp is
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defined as extended on x86 }
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case tai_realconst(hp).realtyp of
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aitrealconst_s32bit:
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begin
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ssingle:=single(tai_realconst(hp).value.s32val);
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pdata:=@ssingle;
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end;
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aitrealconst_s64bit:
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begin
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ddouble:=double(tai_realconst(hp).value.s64val);
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pdata:=@ddouble;
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end;
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{$if defined(cpuextended) and defined(FPC_HAS_TYPE_EXTENDED)}
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{ can't write full 80 bit floating point constants yet on non-x86 }
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aitrealconst_s80bit:
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begin
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eextended:=extended(tai_realconst(hp).value.s80val);
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pdata:=@eextended;
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end;
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{$else}
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{$ifdef FPC_SOFT_FPUX80}
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{$push}{$warn 6018 off} { Unreachable code due to compile time evaluation }
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aitrealconst_s80bit:
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begin
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if sizeof(tai_realconst(hp).value.s80val) = sizeof(double) then
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eextended:=float64_to_floatx80(float64(double(tai_realconst(hp).value.s80val)))
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else if sizeof(tai_realconst(hp).value.s80val) = sizeof(single) then
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eextended:=float32_to_floatx80(float32(single(tai_realconst(hp).value.s80val)))
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else
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internalerror(2017091905);
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pdata:=@eextended;
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end;
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{$pop}
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{$endif}
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{$endif cpuextended}
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aitrealconst_s64comp:
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begin
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ccomp:=comp(tai_realconst(hp).value.s64compval);
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pdata:=@ccomp;
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end;
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else
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internalerror(2014051002);
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end;
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count:=tai_realconst(hp).datasize;
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{ write bytes in inverse order if source and target endianess don't
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match }
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if source_info.endian<>target_info.endian then
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begin
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{ go from back to front }
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index:=count-1;
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step:=-1;
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end
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else
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begin
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index:=0;
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step:=1;
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end;
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{$ifdef ARM}
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{ ARM-specific: low and high dwords of a double may be swapped }
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if tai_realconst(hp).formatoptions=fo_hiloswapped then
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begin
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{ only supported for double }
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if tai_realconst(hp).datasize<>8 then
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internalerror(2014050607);
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{ switch bit of the index so that the words are written in
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the opposite order }
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swapmask:=4;
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end
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else
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{$endif ARM}
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swapmask:=0;
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repeat
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writer.AsmWrite(tostr(pdata[index xor swapmask]));
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inc(index,step);
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dec(count);
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if count<>0 then
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writer.AsmWrite(',');
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until count=0;
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{ padding }
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for count:=tai_realconst(hp).datasize+1 to tai_realconst(hp).savesize do
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writer.AsmWrite(',0');
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writer.AsmLn;
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end;
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function TSdccSdasZ80Assembler.sectionname(atype: TAsmSectiontype;
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const aname: string; aorder: TAsmSectionOrder): string;
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const
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secnames : array[TAsmSectiontype] of string[length('__DATA, __datacoal_nt,coalesced')] = ('','',
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'_CODE',
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'_DATA',
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'_DATA',
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'_DATA',
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'_BSS',
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'.threadvar',
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'.pdata',
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'', { stubs }
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'__DATA,__nl_symbol_ptr',
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'__DATA,__la_symbol_ptr',
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'__DATA,__mod_init_func',
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'__DATA,__mod_term_func',
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'.stab',
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'.stabstr',
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'.idata$2','.idata$4','.idata$5','.idata$6','.idata$7','.edata',
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'.eh_frame',
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'.debug_frame','.debug_info','.debug_line','.debug_abbrev','.debug_aranges','.debug_ranges','.debug_loc','.debug_loclists',
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'.fpc',
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'.toc',
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'.init',
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'.fini',
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'.objc_class',
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'.objc_meta_class',
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'.objc_cat_cls_meth',
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'.objc_cat_inst_meth',
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'.objc_protocol',
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'.objc_string_object',
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'.objc_cls_meth',
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'.objc_inst_meth',
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'.objc_cls_refs',
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'.objc_message_refs',
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'.objc_symbols',
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'.objc_category',
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'.objc_class_vars',
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'.objc_instance_vars',
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'.objc_module_info',
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'.objc_class_names',
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'.objc_meth_var_types',
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'.objc_meth_var_names',
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'.objc_selector_strs',
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'.objc_protocol_ext',
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'.objc_class_ext',
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'.objc_property',
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'.objc_image_info',
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'.objc_cstring_object',
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'.objc_sel_fixup',
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'__DATA,__objc_data',
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'__DATA,__objc_const',
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'.objc_superrefs',
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'__DATA, __datacoal_nt,coalesced',
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'.objc_classlist',
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'.objc_nlclasslist',
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'.objc_catlist',
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'.obcj_nlcatlist',
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'.objc_protolist',
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'_STACK',
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'_HEAP',
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'.gcc_except_table',
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'.ARM.attributes'
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);
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begin
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if atype=sec_user then
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result:=aname
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else
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result:=secnames[atype];
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end;
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procedure TSdccSdasZ80Assembler.WriteSection(atype: TAsmSectiontype;
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const aname: string; aorder: TAsmSectionOrder; secalign: longint;
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secflags: TSectionFlags; secprogbits: TSectionProgbits);
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var
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s : string;
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secflag: TSectionFlag;
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sectionprogbits,
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sectionflags: boolean;
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begin
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writer.AsmLn;
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sectionflags:=false;
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sectionprogbits:=false;
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writer.AsmWrite(#9'.area ');
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{ sectionname may rename those sections, so we do not write flags/progbits for them,
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the assembler will ignore them/spite out a warning anyways }
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if not(atype in [sec_data,sec_rodata,sec_rodata_norel]) then
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begin
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sectionflags:=true;
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sectionprogbits:=true;
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end;
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s:=sectionname(atype,aname,aorder);
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writer.AsmWrite(s);
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writer.AsmLn;
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LastSecType:=atype;
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end;
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procedure TSdccSdasZ80Assembler.WriteInstruction(hp: taicpu);
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var
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i: Integer;
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begin
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if hp.opcode=A_JRJP then
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writer.AsmWrite(#9#9'jp')
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else
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writer.AsmWrite(#9#9+std_op2str[hp.opcode]);
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if (taicpu(hp).ops<>0) or (hp.condition<>C_None) then
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begin
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writer.AsmWrite(#9);
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if hp.condition<>C_None then
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begin
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writer.AsmWrite(uppercond2str[hp.condition]);
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if taicpu(hp).ops<>0 then
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writer.AsmWrite(',');
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end;
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for i:=0 to taicpu(hp).ops-1 do
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begin
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if i<>0 then
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writer.AsmWrite(',');
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if is_calljmp(hp.opcode) then
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WriteOper_jmp(taicpu(hp).oper[i]^,hp)
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else
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WriteOper(taicpu(hp).oper[i]^,hp.opcode,taicpu(hp).ops,(i=2));
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end;
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end;
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writer.AsmLn;
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end;
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procedure TSdccSdasZ80Assembler.WriteOper(const o: toper; opcode: tasmop; ops: longint; dest: boolean);
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var
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need_plus: Boolean;
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begin
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case o.typ of
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top_reg :
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writer.AsmWrite(std_regname(o.reg));
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top_const :
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begin
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writer.AsmWrite('#'+tostr(longint(o.val)));
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end;
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top_ref:
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begin
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if assigned(o.ref^.symbol) and (o.ref^.refaddr in [addr_lo8,addr_hi8,addr_full]) then
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begin
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{if SmartAsm then
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AddSymbol(o.ref^.symbol.name,false);}
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if (o.ref^.base<>NR_NO) or (o.ref^.index<>NR_NO) then
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internalerror(2020041101);
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writer.AsmWrite('#');
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case o.ref^.refaddr of
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addr_lo8:
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writer.AsmWrite('<');
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addr_hi8:
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writer.AsmWrite('>');
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addr_full:
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{nothing};
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else
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;
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end;
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if o.ref^.offset<>0 then
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writer.AsmWrite('('+ApplyAsmSymbolRestrictions(o.ref^.symbol.name)+'+'+tostr(o.ref^.offset)+')')
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else
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writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
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end
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else if not assigned(o.ref^.symbol) and
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((o.ref^.base<>NR_NO) or (o.ref^.index<>NR_NO)) and
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(o.ref^.offset<>0) then
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begin
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{ sdasz80 doesn't range check the offset d in the (IX+d) and
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(IY+d) addressing modes, but instead truncates it to
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shortint, introducing silent bugs, and prevents us from
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catching bugs in the code generator during compilation }
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if ((o.ref^.base<>NR_NO) or (o.ref^.index<>NR_NO)) and
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((o.ref^.offset<-128) or (o.ref^.offset>127)) then
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internalerror(2020042805);
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writer.AsmWrite(tostr(o.ref^.offset));
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writer.AsmWrite(' (');
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if o.ref^.base<>NR_NO then
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begin
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if o.ref^.index<>NR_NO then
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internalerror(2020040201);
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writer.AsmWrite(std_regname(o.ref^.base));
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end
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else if o.ref^.index<>NR_NO then
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begin
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if o.ref^.scalefactor>1 then
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internalerror(2020040202);
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writer.AsmWrite(std_regname(o.ref^.index));
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end;
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writer.AsmWrite(')');
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end
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else
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begin
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writer.AsmWrite('(');
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need_plus:=false;
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if o.ref^.base<>NR_NO then
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begin
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if o.ref^.index<>NR_NO then
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internalerror(2020040203);
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writer.AsmWrite(std_regname(o.ref^.base));
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need_plus:=true;
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end
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else if o.ref^.index<>NR_NO then
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begin
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if o.ref^.scalefactor>1 then
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internalerror(2020040206);
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writer.AsmWrite(std_regname(o.ref^.index));
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need_plus:=true;
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end;
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if assigned(o.ref^.symbol) then
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begin
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{if SmartAsm then
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AddSymbol(o.ref^.symbol.name,false);}
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if need_plus then
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writer.AsmWrite('+');
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writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
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need_plus:=true;
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end;
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if o.ref^.offset<>0 then
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begin
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if need_plus and (o.ref^.offset>0) then
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writer.AsmWrite('+');
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writer.AsmWrite(tostr(o.ref^.offset));
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need_plus:=true;
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end;
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if not need_plus then
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writer.AsmWrite('0');
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writer.AsmWrite(')');
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end;
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end;
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else
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internalerror(2020100803);
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end;
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end;
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procedure TSdccSdasZ80Assembler.WriteOper_jmp(const o: toper; ai: taicpu);
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begin
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case o.typ of
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top_reg :
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writer.AsmWrite(std_regname(o.reg));
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top_const :
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begin
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writer.AsmWrite('#'+tostr(longint(o.val)));
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end;
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top_ref:
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begin
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if o.ref^.refaddr=addr_no then
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begin
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writer.AsmWrite('TODO:indirect jump ref');
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//WriteReference(o.ref^);
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end
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else
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begin
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writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
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//if SmartAsm then
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// AddSymbol(o.ref^.symbol.name,false);
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if o.ref^.offset>0 then
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writer.AsmWrite('+'+tostr(o.ref^.offset))
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else
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if o.ref^.offset<0 then
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writer.AsmWrite(tostr(o.ref^.offset));
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end;
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end;
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else
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internalerror(2020100804);
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end;
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end;
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procedure TSdccSdasZ80Assembler.WriteExternals;
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var
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sym : TAsmSymbol;
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i : longint;
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begin
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writer.AsmWriteln('; Begin externals');
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for i:=0 to current_asmdata.AsmSymbolDict.Count-1 do
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begin
|
|
sym:=TAsmSymbol(current_asmdata.AsmSymbolDict[i]);
|
|
if sym.bind in [AB_EXTERNAL,AB_EXTERNAL_INDIRECT] then
|
|
writer.AsmWriteln(#9'.globl'#9+ApplyAsmSymbolRestrictions(sym.name));
|
|
end;
|
|
writer.AsmWriteln('; End externals');
|
|
end;
|
|
|
|
procedure TSdccSdasZ80Assembler.WriteTree(p: TAsmList);
|
|
|
|
procedure doalign(alignment: byte; use_op: boolean; fillop: byte; maxbytes: byte; out last_align: longint;lasthp:tai);
|
|
var
|
|
i: longint;
|
|
alignment64 : int64;
|
|
begin
|
|
last_align:=alignment;
|
|
if alignment>1 then
|
|
writer.AsmWriteLn(#9'.bndry '+tostr(alignment));
|
|
end;
|
|
|
|
var
|
|
lasthp,
|
|
hp: tai;
|
|
s, sb, LastSecName: string;
|
|
counter,lines,i,j,l,tokens,pos,last_align: longint;
|
|
quoted, do_line: Boolean;
|
|
consttype: taiconst_type;
|
|
ch: Char;
|
|
InlineLevel : longint;
|
|
prevfileinfo : tfileposinfo;
|
|
previnfile : tinputfile;
|
|
LastAlign: Integer;
|
|
LastSecOrder: TAsmSectionOrder;
|
|
begin
|
|
if not assigned(p) then
|
|
exit;
|
|
InlineLevel:=0;
|
|
last_align:=1;
|
|
lasthp:=nil;
|
|
{ lineinfo is only needed for al_procedures (PFV) }
|
|
do_line:=(cs_asm_source in current_settings.globalswitches) or
|
|
((cs_lineinfo in current_settings.moduleswitches)
|
|
and (p=current_asmdata.asmlists[al_procedures]));
|
|
hp:=tai(p.first);
|
|
while assigned(hp) do
|
|
begin
|
|
prefetch(pointer(hp.next)^);
|
|
if not(hp.typ in SkipLineInfo) then
|
|
begin
|
|
previnfile:=lastinfile;
|
|
prevfileinfo:=lastfileinfo;
|
|
current_filepos:=tailineinfo(hp).fileinfo;
|
|
|
|
{ no line info for inlined code }
|
|
if do_line and (inlinelevel=0) then
|
|
WriteSourceLine(hp as tailineinfo);
|
|
(*if (lastfileinfo.line<>prevfileinfo.line) or
|
|
(previnfile<>lastinfile) then
|
|
begin
|
|
{ +0 postfix means no line increment per assembler instruction }
|
|
writer.AsmWrite('%LINE '+tostr(current_filepos.line)+'+0');
|
|
if assigned(lastinfile) and ((previnfile<>lastinfile) or NewObject) then
|
|
writer.AsmWriteLn(' '+lastinfile.name)
|
|
else
|
|
writer.AsmLn;
|
|
NewObject:=false;
|
|
end;*)
|
|
end;
|
|
case hp.typ of
|
|
ait_section :
|
|
begin
|
|
ResetSourceLines;
|
|
|
|
if tai_section(hp).sectype<>sec_none then
|
|
WriteSection(tai_section(hp).sectype,tai_section(hp).name^,tai_section(hp).secorder,
|
|
tai_section(hp).secalign,tai_section(hp).secflags,tai_section(hp).secprogbits)
|
|
else
|
|
begin
|
|
{$ifdef EXTDEBUG}
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWriteln(' sec_none');
|
|
{$endif EXTDEBUG}
|
|
end;
|
|
end;
|
|
ait_align :
|
|
begin
|
|
doalign(tai_align_abstract(hp).aligntype,tai_align_abstract(hp).use_op,tai_align_abstract(hp).fillop,tai_align_abstract(hp).maxbytes,last_align,lasthp);
|
|
end;
|
|
ait_label :
|
|
begin
|
|
if tai_label(hp).labsym.is_used then
|
|
begin
|
|
writer.AsmWrite(ApplyAsmSymbolRestrictions(tai_label(hp).labsym.name));
|
|
if tai_label(hp).labsym.bind in [AB_GLOBAL,AB_PRIVATE_EXTERN] then
|
|
writer.AsmWriteLn('::')
|
|
else
|
|
writer.AsmWriteLn(':');
|
|
end;
|
|
end;
|
|
ait_symbol :
|
|
begin
|
|
if not(tai_symbol(hp).has_value) then
|
|
begin
|
|
if tai_symbol(hp).is_global then
|
|
writer.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_symbol(hp).sym.name) + '::')
|
|
else
|
|
writer.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_symbol(hp).sym.name) + ':');
|
|
end
|
|
else
|
|
begin
|
|
if tai_symbol(hp).is_global then
|
|
writer.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_symbol(hp).sym.name) + '==' + tostr(tai_symbol(hp).value))
|
|
else
|
|
writer.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_symbol(hp).sym.name) + '=' + tostr(tai_symbol(hp).value));
|
|
end;
|
|
end;
|
|
ait_symbol_end :
|
|
begin
|
|
end;
|
|
ait_datablock :
|
|
begin
|
|
if tai_datablock(hp).is_global or SmartAsm then
|
|
writer.AsmWrite(ApplyAsmSymbolRestrictions(tai_datablock(hp).sym.name) + '::')
|
|
else
|
|
writer.AsmWrite(ApplyAsmSymbolRestrictions(tai_datablock(hp).sym.name) + ':');
|
|
{if SmartAsm then
|
|
AddSymbol(tai_datablock(hp).sym.name,true);}
|
|
writer.AsmWriteLn(#9'.rs'#9+tostr(tai_datablock(hp).size));
|
|
end;
|
|
ait_realconst:
|
|
WriteRealConstAsBytes(tai_realconst(hp),#9'.db'#9,do_line);
|
|
ait_const:
|
|
begin
|
|
consttype:=tai_const(hp).consttype;
|
|
case consttype of
|
|
aitconst_uleb128bit:
|
|
writer.AsmWriteLn(ait_const2str[aitconst_8bit]+uleb128tostr(qword(tai_const(hp).value)));
|
|
aitconst_sleb128bit:
|
|
writer.AsmWriteLn(ait_const2str[aitconst_8bit]+sleb128tostr(tai_const(hp).value));
|
|
aitconst_64bit,
|
|
aitconst_64bit_unaligned,
|
|
aitconst_32bit,
|
|
aitconst_32bit_unaligned:
|
|
begin
|
|
writer.AsmWrite(#9'.dw'#9);
|
|
l:=0;
|
|
tokens:=1;
|
|
repeat
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if assigned(tai_const(hp).endsym) then
|
|
s:=ApplyAsmSymbolRestrictions(tai_const(hp).endsym.name)+'-'+ApplyAsmSymbolRestrictions(tai_const(hp).sym.name)
|
|
else
|
|
s:=ApplyAsmSymbolRestrictions(tai_const(hp).sym.name);
|
|
if tai_const(hp).value<>0 then
|
|
s:=s+tostr_with_plus(tai_const(hp).value);
|
|
if consttype in [aitconst_64bit,aitconst_64bit_unaligned] then
|
|
s:=s+',0,0,0'
|
|
else
|
|
s:=s+',0';
|
|
end
|
|
else
|
|
if consttype in [aitconst_64bit,aitconst_64bit_unaligned] then
|
|
s:=tostr(Word(tai_const(hp).value)) +','+tostr(Word(tai_const(hp).value shr 16))+','+
|
|
tostr(Word(tai_const(hp).value shr 32))+','+tostr(Word(tai_const(hp).value shr 48))
|
|
else
|
|
s:=tostr(Word(tai_const(hp).value))+','+tostr(Word(tai_const(hp).value shr 16));
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
inc(tokens);
|
|
if (l>line_length) or
|
|
(tokens>max_tokens) or
|
|
(hp.next=nil) or
|
|
(tai(hp.next).typ<>ait_const) or
|
|
(tai_const(hp.next).consttype<>consttype) then
|
|
break;
|
|
hp:=tai(hp.next);
|
|
writer.AsmWrite(',');
|
|
until false;
|
|
{ Substract section start for secrel32 type }
|
|
{if consttype=aitconst_secrel32_symbol then
|
|
writer.AsmWrite(' - $$');}
|
|
writer.AsmLn;
|
|
end;
|
|
{aitconst_128bit,}
|
|
aitconst_16bit,
|
|
aitconst_8bit,
|
|
aitconst_16bit_unaligned{,
|
|
aitconst_rva_symbol,
|
|
aitconst_secrel32_symbol} :
|
|
begin
|
|
writer.AsmWrite(ait_const2str[consttype]);
|
|
l:=0;
|
|
tokens:=1;
|
|
repeat
|
|
if assigned(tai_const(hp).sym) then
|
|
begin
|
|
if assigned(tai_const(hp).endsym) then
|
|
s:=ApplyAsmSymbolRestrictions(tai_const(hp).endsym.name)+'-'+ApplyAsmSymbolRestrictions(tai_const(hp).sym.name)
|
|
else
|
|
s:=ApplyAsmSymbolRestrictions(tai_const(hp).sym.name);
|
|
if tai_const(hp).value<>0 then
|
|
s:=s+tostr_with_plus(tai_const(hp).value);
|
|
end
|
|
else
|
|
s:=tostr(tai_const(hp).value);
|
|
writer.AsmWrite(s);
|
|
inc(l,length(s));
|
|
inc(tokens);
|
|
if (l>line_length) or
|
|
(tokens>max_tokens) or
|
|
(hp.next=nil) or
|
|
(tai(hp.next).typ<>ait_const) or
|
|
(tai_const(hp.next).consttype<>consttype) then
|
|
break;
|
|
hp:=tai(hp.next);
|
|
writer.AsmWrite(',');
|
|
until false;
|
|
{ Substract section start for secrel32 type }
|
|
if consttype=aitconst_secrel32_symbol then
|
|
writer.AsmWrite(' - $$');
|
|
writer.AsmLn;
|
|
end;
|
|
else
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWrite('WARNING: not yet implemented in assembler output: ');
|
|
Str(consttype,s);
|
|
writer.AsmWriteLn(s);
|
|
end;
|
|
end;
|
|
end;
|
|
ait_string :
|
|
begin
|
|
pos:=0;
|
|
s:='';
|
|
sb:='';
|
|
for i:=1 to tai_string(hp).len do
|
|
begin
|
|
ch:=tai_string(hp).str[i-1];
|
|
if ch in [#32..chr(ord('"')-1),char(ord('"')+1)..#127] then
|
|
begin
|
|
if sb<>'' then
|
|
begin
|
|
writer.AsmWriteln(sb);
|
|
sb:='';
|
|
pos:=0;
|
|
end;
|
|
if pos=0 then
|
|
begin
|
|
s:=#9'.ascii'#9'"'+ch;
|
|
pos:=20;
|
|
end
|
|
else
|
|
begin
|
|
s:=s+ch;
|
|
inc(pos);
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if s<>'' then
|
|
begin
|
|
writer.AsmWriteln(s+'"');
|
|
s:='';
|
|
pos:=0;
|
|
end;
|
|
if pos=0 then
|
|
begin
|
|
sb:=#9'.byte'#9+tostr(ord(ch));
|
|
pos:=15;
|
|
end
|
|
else
|
|
begin
|
|
sb:=sb+','+tostr(ord(ch));
|
|
inc(pos,4);
|
|
end;
|
|
end;
|
|
if (pos>line_length) or (i=tai_string(hp).len) then
|
|
begin
|
|
if s<>'' then
|
|
begin
|
|
writer.AsmWriteLn(s+'"');
|
|
s:='';
|
|
end
|
|
else if sb<>'' then
|
|
begin
|
|
writer.AsmWriteLn(sb);
|
|
sb:='';
|
|
end;
|
|
pos:=0;
|
|
end;
|
|
end;
|
|
end;
|
|
ait_instruction :
|
|
begin
|
|
WriteInstruction(taicpu(hp));
|
|
end;
|
|
ait_directive :
|
|
begin
|
|
case tai_directive(hp).directive of
|
|
asd_cpu :
|
|
writer.AsmWriteLn('; CPU '+tai_directive(hp).name);
|
|
else
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWrite('WARNING: not yet implemented in assembler output: ait_directive.');
|
|
Str(tai_directive(hp).directive,s);
|
|
writer.AsmWriteLn(s);
|
|
end;
|
|
end;
|
|
end;
|
|
ait_cutobject :
|
|
begin
|
|
if SmartAsm then
|
|
begin
|
|
{ only reset buffer if nothing has changed }
|
|
if not writer.ClearIfEmpty then
|
|
begin
|
|
{if SmartAsm then
|
|
begin
|
|
WriteSmartExternals;
|
|
FreeExternChainList;
|
|
end;
|
|
WriteGroups;}
|
|
writer.AsmClose;
|
|
DoAssemble;
|
|
writer.AsmCreate(tai_cutobject(hp).place);
|
|
{ResetSectionsList;
|
|
WriteHeader;}
|
|
end;
|
|
{ avoid empty files }
|
|
LastSecType:=sec_none;
|
|
LastSecName:='';
|
|
LastSecOrder:=secorder_default;
|
|
LastAlign:=1;
|
|
while assigned(hp.next) and (tai(hp.next).typ in [ait_cutobject,ait_section,ait_comment]) do
|
|
begin
|
|
if tai(hp.next).typ=ait_section then
|
|
begin
|
|
LastSecType:=tai_section(hp.next).sectype;
|
|
LastSecName:=tai_section(hp.next).name^;
|
|
LastSecOrder:=tai_section(hp.next).secorder;
|
|
LastAlign:=tai_section(hp.next).secalign;
|
|
end;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
if LastSecType<>sec_none then
|
|
WriteSection(LastSecType,LastSecName,LastSecOrder,LastAlign);
|
|
writer.MarkEmpty;
|
|
//NewObject:=true;
|
|
end;
|
|
end;
|
|
ait_marker :
|
|
if tai_marker(hp).kind=mark_NoLineInfoStart then
|
|
inc(InlineLevel)
|
|
else if tai_marker(hp).kind=mark_NoLineInfoEnd then
|
|
dec(InlineLevel);
|
|
ait_stab,
|
|
ait_force_line,
|
|
ait_function_name : ;
|
|
else
|
|
if not WriteComments(hp) then
|
|
begin
|
|
writer.AsmWrite(asminfo^.comment);
|
|
writer.AsmWrite('WARNING: not yet implemented in assembler output: ');
|
|
Str(hp.typ,s);
|
|
writer.AsmWriteLn(s);
|
|
end;
|
|
end;
|
|
lasthp:=hp;
|
|
hp:=tai(hp.next);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure TSdccSdasZ80Assembler.WriteAsmList;
|
|
var
|
|
hal: TAsmListType;
|
|
begin
|
|
WriteExternals;
|
|
|
|
for hal:=low(TasmlistType) to high(TasmlistType) do
|
|
begin
|
|
writer.AsmWriteLn(asminfo^.comment+'Begin asmlist '+AsmListTypeStr[hal]);
|
|
writetree(current_asmdata.asmlists[hal]);
|
|
writer.AsmWriteLn(asminfo^.comment+'End asmlist '+AsmListTypeStr[hal]);
|
|
end;
|
|
end;
|
|
|
|
|
|
function TSdccSdasZ80Assembler.MakeCmdLine: TCmdStr;
|
|
begin
|
|
result := {'-mmcu='+lower(cputypestr[current_settings.cputype])+' '+}inherited MakeCmdLine;
|
|
end;
|
|
|
|
|
|
const
|
|
as_sdcc_sdasZ80_asm_info : tasminfo =
|
|
(
|
|
id : as_sdcc_sdasz80;
|
|
|
|
idtxt : 'SDCC-SDASZ80';
|
|
asmbin : 'sdasz80';
|
|
asmcmd : '-g -o $EXTRAOPT $OBJ $ASM';
|
|
supported_targets : [system_Z80_embedded,system_z80_zxspectrum,system_z80_msxdos];
|
|
flags : [af_needar];
|
|
labelprefix : '.L';
|
|
labelmaxlen : 79;
|
|
comment : '; ';
|
|
dollarsign: '$';
|
|
);
|
|
|
|
|
|
begin
|
|
RegisterAssembler(as_sdcc_sdasZ80_asm_info,TSdccSdasZ80Assembler);
|
|
end.
|