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@@ -0,0 +1,924 @@
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+{
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+ Copyright (c) 2003 by Florian Klaempfl
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+
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+ This unit implements an asm for the Z80
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+
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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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+
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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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+
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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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+}
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+{ This unit implements the assembler writer for the vasm assembler:
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+ http://sun.hasenbraten.de/vasm/
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+}
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+
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+unit agz80vasm;
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+
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+{$i fpcdefs.inc}
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+
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+ interface
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+
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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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+
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+ type
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+
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+ { TZ80vasm }
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+
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+ TZ80Vasm=class(TExternalAssembler)
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+ private
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+ procedure WriteDecodedSleb128(a: int64);
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+ procedure WriteDecodedUleb128(a: qword);
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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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+
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+ implementation
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+
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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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+ finput;
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+
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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'.word'#9,#9'.byte'#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'.uahalf'#9,#9'FIXMEDD'#9,#9'FIXMEDQ'#9
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+ );
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+
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+ procedure TZ80vasm.WriteDecodedSleb128(a: int64);
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+ var
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+ i,len : longint;
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+ buf : array[0..255] of byte;
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+ begin
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+ writer.AsmWrite(#9'.byte'#9);
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+ len:=EncodeSleb128(a,buf,0);
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+ for i:=0 to len-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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+ writer.AsmWrite(tostr(buf[i]));
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+ end;
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+ writer.AsmWriteLn(#9'; sleb '+tostr(a));
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+ end;
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+
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+ procedure TZ80vasm.WriteDecodedUleb128(a: qword);
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+ var
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+ i,len : longint;
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+ buf : array[0..63] of byte;
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+ begin
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+ writer.AsmWrite(#9'.byte'#9);
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+ len:=EncodeUleb128(a,buf,0);
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+ for i:=0 to len-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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+ writer.AsmWrite(tostr(buf[i]));
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+ end;
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+ writer.AsmWriteLn(#9'; uleb '+tostr(a));
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+ end;
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+
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+ procedure TZ80vasm.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}{$warn 6018 off} { Unreachable code due to compile time evaluation }
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+ aitrealconst_s80bit:
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+ begin
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+ if sizeof(tai_realconst(hp).value.s80val) = sizeof(double) then
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+ writer.AsmWriteLn(asminfo^.comment+'value: '+double2str(tai_realconst(hp).value.s80val))
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+ else if sizeof(tai_realconst(hp).value.s80val) = sizeof(single) then
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+ writer.AsmWriteLn(asminfo^.comment+'value: '+single2str(tai_realconst(hp).value.s80val))
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+ else
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+ internalerror(2017091901);
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+ end;
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+{$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(2014050604);
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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}{$warn 6018 off} { Unreachable code due to compile time evaluation }
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+ aitrealconst_s80bit:
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+ begin
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+ if sizeof(tai_realconst(hp).value.s80val) = sizeof(double) then
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+ eextended:=float64_to_floatx80(float64(double(tai_realconst(hp).value.s80val)))
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+ else if sizeof(tai_realconst(hp).value.s80val) = sizeof(single) then
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+ eextended:=float32_to_floatx80(float32(single(tai_realconst(hp).value.s80val)))
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+ else
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+ internalerror(2017091901);
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+ pdata:=@eextended;
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+ end;
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+{$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(2014051001);
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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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+{$ifdef ARM}
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+ { ARM-specific: low and high dwords of a double may be swapped }
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+ if tai_realconst(hp).formatoptions=fo_hiloswapped then
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+ begin
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+ { only supported for double }
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+ if tai_realconst(hp).datasize<>8 then
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+ internalerror(2014050605);
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+ { switch bit of the index so that the words are written in
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+ the opposite order }
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+ swapmask:=4;
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+ end
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+ else
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+{$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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+
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+ function TZ80vasm.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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+ '.text',
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+ '.data',
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+ '.data',
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+ '.rodata',
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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',
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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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+ var
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+ sep: string[3];
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+ begin
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+ result:=secnames[atype];
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+
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+ if (aname<>'') then
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+ begin
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+ case aorder of
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+ secorder_begin :
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+ sep:='.b_';
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+ secorder_end :
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+ sep:='.z_';
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+ else
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+ sep:='.n_';
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+ end;
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+ result:=result+sep+aname;
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+ end;
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+{ else
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+ result:=secname;}
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+ end;
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+
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+ procedure TZ80vasm.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'.section ');
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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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+
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+ procedure TZ80vasm.WriteInstruction(hp: taicpu);
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+ var
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+ i: Integer;
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+ begin
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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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+
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+ procedure TZ80vasm.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
|
|
|
+ begin
|
|
|
+ {if SmartAsm then
|
|
|
+ AddSymbol(o.ref^.symbol.name,false);}
|
|
|
+ if (o.ref^.base<>NR_NO) or (o.ref^.index<>NR_NO) then
|
|
|
+ internalerror(2020041101);
|
|
|
+ // writer.AsmWrite('#');
|
|
|
+ case o.ref^.refaddr of
|
|
|
+ addr_lo8:
|
|
|
+ writer.AsmWrite('<');
|
|
|
+ addr_hi8:
|
|
|
+ writer.AsmWrite('>');
|
|
|
+ addr_full:
|
|
|
+ {nothing};
|
|
|
+ else
|
|
|
+ ;
|
|
|
+ end;
|
|
|
+ if o.ref^.offset<>0 then
|
|
|
+ writer.AsmWrite('('+ApplyAsmSymbolRestrictions(o.ref^.symbol.name)+'+'+tostr(o.ref^.offset)+')')
|
|
|
+ else
|
|
|
+ writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
|
|
|
+ end
|
|
|
+ else if not assigned(o.ref^.symbol) and
|
|
|
+ ((o.ref^.base<>NR_NO) or (o.ref^.index<>NR_NO)) and
|
|
|
+ (o.ref^.offset<>0) then
|
|
|
+ begin
|
|
|
+ //writer.AsmWrite(tostr(o.ref^.offset));
|
|
|
+ writer.AsmWrite('(');
|
|
|
+ if o.ref^.base<>NR_NO then
|
|
|
+ begin
|
|
|
+ if o.ref^.index<>NR_NO then
|
|
|
+ internalerror(2020040201);
|
|
|
+ writer.AsmWrite(std_regname(o.ref^.base));
|
|
|
+ end
|
|
|
+ else if o.ref^.index<>NR_NO then
|
|
|
+ begin
|
|
|
+ if o.ref^.scalefactor>1 then
|
|
|
+ internalerror(2020040202);
|
|
|
+ writer.AsmWrite(std_regname(o.ref^.index));
|
|
|
+ end;
|
|
|
+ if o.ref^.offset > 0 then
|
|
|
+ writer.AsmWrite('+'+tostr(o.ref^.offset))
|
|
|
+ else
|
|
|
+ if o.ref^.offset < 0 then
|
|
|
+ writer.AsmWrite(tostr(o.ref^.offset));
|
|
|
+ writer.AsmWrite(')');
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ writer.AsmWrite('(');
|
|
|
+ need_plus:=false;
|
|
|
+ if o.ref^.base<>NR_NO then
|
|
|
+ begin
|
|
|
+ if o.ref^.index<>NR_NO then
|
|
|
+ internalerror(2020040201);
|
|
|
+ writer.AsmWrite(std_regname(o.ref^.base));
|
|
|
+ need_plus:=true;
|
|
|
+ end
|
|
|
+ else if o.ref^.index<>NR_NO then
|
|
|
+ begin
|
|
|
+ if o.ref^.scalefactor>1 then
|
|
|
+ internalerror(2020040202);
|
|
|
+ writer.AsmWrite(std_regname(o.ref^.index));
|
|
|
+ need_plus:=true;
|
|
|
+ end;
|
|
|
+ if assigned(o.ref^.symbol) then
|
|
|
+ begin
|
|
|
+ {if SmartAsm then
|
|
|
+ AddSymbol(o.ref^.symbol.name,false);}
|
|
|
+ if need_plus then
|
|
|
+ writer.AsmWrite('+');
|
|
|
+ writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
|
|
|
+ need_plus:=true;
|
|
|
+ end;
|
|
|
+ if o.ref^.offset<>0 then
|
|
|
+ begin
|
|
|
+ if need_plus and (o.ref^.offset>0) then
|
|
|
+ writer.AsmWrite('+');
|
|
|
+ writer.AsmWrite(tostr(o.ref^.offset));
|
|
|
+ need_plus:=true;
|
|
|
+ end;
|
|
|
+ if not need_plus then
|
|
|
+ writer.AsmWrite('0');
|
|
|
+ writer.AsmWrite(')');
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ else
|
|
|
+ internalerror(10001);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+
|
|
|
+ procedure TZ80vasm.WriteOper_jmp(const o: toper; ai: taicpu);
|
|
|
+ begin
|
|
|
+ case o.typ of
|
|
|
+ top_reg :
|
|
|
+ writer.AsmWrite(std_regname(o.reg));
|
|
|
+ top_const :
|
|
|
+ begin
|
|
|
+ writer.AsmWrite(tostr(longint(o.val)));
|
|
|
+ end;
|
|
|
+ top_ref:
|
|
|
+ begin
|
|
|
+ if o.ref^.refaddr=addr_no then
|
|
|
+ begin
|
|
|
+ writer.AsmWrite('TODO:indirect jump ref');
|
|
|
+ //WriteReference(o.ref^);
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ writer.AsmWrite(ApplyAsmSymbolRestrictions(o.ref^.symbol.name));
|
|
|
+ //if SmartAsm then
|
|
|
+ // AddSymbol(o.ref^.symbol.name,false);
|
|
|
+ if o.ref^.offset>0 then
|
|
|
+ writer.AsmWrite('+'+tostr(o.ref^.offset))
|
|
|
+ else
|
|
|
+ if o.ref^.offset<0 then
|
|
|
+ writer.AsmWrite(tostr(o.ref^.offset));
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ else
|
|
|
+ internalerror(10001);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+
|
|
|
+ procedure TZ80vasm.WriteExternals;
|
|
|
+ var
|
|
|
+ sym : TAsmSymbol;
|
|
|
+ i : longint;
|
|
|
+ begin
|
|
|
+ writer.AsmWriteln('; Begin externals');
|
|
|
+ for i:=0 to current_asmdata.AsmSymbolDict.Count-1 do
|
|
|
+ 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 TZ80vasm.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'.balign '+tostr(alignment));
|
|
|
+ end;
|
|
|
+
|
|
|
+ var
|
|
|
+ lasthp,
|
|
|
+ hp: tai;
|
|
|
+ s, 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_comment :
|
|
|
+ begin
|
|
|
+ writer.AsmWrite(asminfo^.comment);
|
|
|
+ writer.AsmWritePChar(tai_comment(hp).str);
|
|
|
+ writer.AsmLn;
|
|
|
+ end;
|
|
|
+ ait_regalloc :
|
|
|
+ begin
|
|
|
+ if (cs_asm_regalloc in current_settings.globalswitches) then
|
|
|
+ writer.AsmWriteLn(#9#9+asminfo^.comment+'Register '+std_regname(tai_regalloc(hp).reg)+' '+
|
|
|
+ regallocstr[tai_regalloc(hp).ratype]);
|
|
|
+ end;
|
|
|
+ ait_tempalloc :
|
|
|
+ begin
|
|
|
+ if (cs_asm_tempalloc in current_settings.globalswitches) then
|
|
|
+ WriteTempalloc(tai_tempalloc(hp));
|
|
|
+ end;
|
|
|
+ ait_section :
|
|
|
+ begin
|
|
|
+ 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.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_datablock(hp).sym.name) + ':')
|
|
|
+ else
|
|
|
+ writer.AsmWriteLn(ApplyAsmSymbolRestrictions(tai_datablock(hp).sym.name) + ':');
|
|
|
+ {if SmartAsm then
|
|
|
+ AddSymbol(tai_datablock(hp).sym.name,true);}
|
|
|
+ writer.AsmWriteLn(#9'.zero'#9+tostr(tai_datablock(hp).size));
|
|
|
+ end;
|
|
|
+ ait_realconst:
|
|
|
+ WriteRealConstAsBytes(tai_realconst(hp),#9'.byte'#9,do_line);
|
|
|
+ ait_const:
|
|
|
+ begin
|
|
|
+ consttype:=tai_const(hp).consttype;
|
|
|
+ case consttype of
|
|
|
+ aitconst_uleb128bit:
|
|
|
+ WriteDecodedUleb128(qword(tai_const(hp).value));
|
|
|
+ aitconst_sleb128bit:
|
|
|
+ WriteDecodedSleb128(int64(tai_const(hp).value));
|
|
|
+ aitconst_64bit,
|
|
|
+ aitconst_64bit_unaligned,
|
|
|
+ aitconst_32bit,
|
|
|
+ aitconst_32bit_unaligned:
|
|
|
+ begin
|
|
|
+ writer.AsmWrite(#9'.uahalf'#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;
|
|
|
+ for i:=1 to tai_string(hp).len do
|
|
|
+ begin
|
|
|
+ if pos=0 then
|
|
|
+ begin
|
|
|
+ writer.AsmWrite(#9'.ascii'#9'"');
|
|
|
+ pos:=20;
|
|
|
+ end;
|
|
|
+ ch:=tai_string(hp).str[i-1];
|
|
|
+ case ch of
|
|
|
+ #0, {This can't be done by range, because a bug in FPC}
|
|
|
+ #1..#31,
|
|
|
+ #128..#255 : s:='\'+tostr(ord(ch) shr 6)+tostr((ord(ch) and 63) shr 3)+tostr(ord(ch) and 7);
|
|
|
+ '"' : s:='\"';
|
|
|
+ '\' : s:='\\';
|
|
|
+ else
|
|
|
+ s:=ch;
|
|
|
+ end;
|
|
|
+ writer.AsmWrite(s);
|
|
|
+ inc(pos,length(s));
|
|
|
+ if (pos>line_length) or (i=tai_string(hp).len) then
|
|
|
+ begin
|
|
|
+ writer.AsmWriteLn('"');
|
|
|
+ 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
|
|
|
+ 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 TZ80vasm.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 TZ80vasm.MakeCmdLine: TCmdStr;
|
|
|
+ begin
|
|
|
+ result := {'-mmcu='+lower(cputypestr[current_settings.cputype])+' '+}inherited MakeCmdLine;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+ const
|
|
|
+ as_z80_vasm_info : tasminfo =
|
|
|
+ (
|
|
|
+ id : as_z80_vasm;
|
|
|
+
|
|
|
+ idtxt : 'VASM';
|
|
|
+ asmbin : 'vasmz80_std';
|
|
|
+ asmcmd : '-quiet -Fvobj -o $OBJ $EXTRAOPT $ASM';
|
|
|
+ supported_targets : [system_z80_embedded, system_z80_zxspectrum];
|
|
|
+ flags : [af_needar,af_smartlink_sections];
|
|
|
+ labelprefix : '.L';
|
|
|
+ labelmaxlen : -1;
|
|
|
+ comment : '; ';
|
|
|
+ dollarsign: '$';
|
|
|
+ );
|
|
|
+
|
|
|
+
|
|
|
+begin
|
|
|
+ RegisterAssembler(as_z80_vasm_info,TZ80vasm);
|
|
|
+end.
|
Károly Balogh