paweld/fpc
1
0
Fork 0
mirror of https://gitlab.com/freepascal.org/fpc/source.git synced 2025-04-09 08:30:54 +02:00
Code Issues Packages Projects Releases Wiki Activity

sinclairql: when linking with vlink, generate an unrelocated binary with appended relocation info, so the startup code can relocate it

Browse Source 
git-svn-id: trunk@47347 -
This commit is contained in:
Károly Balogh 2020-11-08 20:38:42 +00:00
parent 47066f0ce7
commit 954123deb3
1 changed files with 77 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

87
compiler/systems/t_sinclairql.pas
View File

@ -35,6 +35,7 @@ type
private
Origin: DWord;
UseVLink: boolean;
ExeLength: longint;
function WriteResponseFile(isdll: boolean): boolean;
procedure SetSinclairQLInfo;
function MakeSinclairQLExe: boolean;
@ -54,7 +55,7 @@ implementation
const
DefaultOrigin = $20000;
DefaultOrigin = $0;
constructor TLinkerSinclairQL.Create;
@ -83,7 +84,7 @@ begin
end
else
begin
ExeCmd[1]:='vlink -b rawbin1 $FLAGS $GCSECTIONS $OPT $STRIP -o $EXE -T $RES';
ExeCmd[1]:='vlink -b rawseg -q $FLAGS $GCSECTIONS $OPT $STRIP -o $EXE -T $RES';
end;
end;
end;
@ -105,10 +106,8 @@ end;
function TLinkerSinclairQL.WriteResponseFile(isdll: boolean): boolean;
var
linkres : TLinkRes;
i : longint;
HPath : TCmdStrListItem;
s : string;
linklibc : boolean;
begin
WriteResponseFile:=False;
@ -177,9 +176,13 @@ begin
Add('SECTIONS');
Add('{');
Add(' . = 0x'+hexstr(Origin,8)+';');
Add(' .text : { *(.text .text.* _CODE _CODE.* ) }');
Add(' .data : { *(.data .data.* .rodata .rodata.* .fpc.* ) }');
Add(' .bss : { *(_BSS _BSS.*) *(.bss .bss.*) *(_BSSEND _BSSEND.*) *(_HEAP _HEAP.*) *(.stack .stack.*) *(_STACK _STACK.*) }');
Add(' .text : {');
Add(' _stext = .;');
Add(' *(.text .text.* _CODE _CODE.* ) ');
Add(' *(.data .data.* .rodata .rodata.* .fpc.* ) ');
Add(' *(_BSS _BSS.*) *(.bss .bss.*) *(_BSSEND _BSSEND.*) *(_HEAP _HEAP.*) *(.stack .stack.*) *(_STACK _STACK.*) ');
Add(' _etext = .;');
Add(' }');
Add('}');
end;
@ -200,6 +203,9 @@ var
GCSectionsStr : string;
FlagsStr : string;
ExeName: string;
fd,fs: file;
buf: pointer;
bufread,bufsize: longint;
begin
StripStr:='';
GCSectionsStr:='';
@ -213,12 +219,10 @@ begin
if UseVLink then
begin
if create_smartlink_sections then
GCSectionsStr:='-gc-all -sc';
GCSectionsStr:='-gc-all';
end;
ExeName:=current_module.exefilename;
if apptype = app_gui then
Replace(ExeName,target_info.exeext,'.prg');
{ Call linker }
SplitBinCmd(Info.ExeCmd[1],BinStr,CmdStr);
@ -232,12 +236,57 @@ begin
Replace(cmdstr,'$DYNLINK',DynLinkStr);
MakeSinclairQLExe:=DoExec(BinStr,CmdStr,true,false);
{ Kludge:
With the above linker script, vlink will produce two files,
"exename. text" and "exename. text.rel text". The former is the
binary itself, the second is the relocation info. Here we copy
the two together. I'll try to get vlink to do this for me in the
future. (KB) }
if MakeSinclairQLExe then
begin
ExeLength:=0;
bufsize:=16384;
{$push}
{$i-}
buf:=GetMem(bufsize);
assign(fd,exename);
rewrite(fd,1);
assign(fs,exename+'. text');
reset(fs,1);
repeat
blockread(fs,buf^,bufsize,bufread);
blockwrite(fd,buf^,bufread);
until eof(fs);
close(fs);
// erase(fs);
assign(fs,exename+'. text.rel text');
reset(fs,1);
repeat
blockread(fs,buf^,bufsize,bufread);
blockwrite(fd,buf^,bufread);
until eof(fs);
close(fs);
// erase(fs);
ExeLength:=FileSize(fd);
close(fd);
{$pop}
MakeSinclairQLExe:=not (ExeLength = 0);
end;
end;
function TLinkerSinclairQL.MakeExecutable:boolean;
const
DefaultBootString = '10 $SYM=RESPR($BINSIZE):LBYTES"win1_$EXENAME",$SYM:CALL $SYM';
var
success : boolean;
bootfile : TScript;
ExeName: String;
BootStr: String;
begin
if not(cs_link_nolink in current_settings.globalswitches) then
Message1(exec_i_linking,current_module.exefilename);
@ -251,6 +300,24 @@ begin
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
DeleteFile(outputexedir+Info.ResName);
if (success) then
begin
ExeName:=current_module.exefilename;
BootStr:=DefaultBootString;
Replace(BootStr,'$BINSIZE',tostr(ExeLength)); { FIX ME }
Replace(BootStr,'$EXENAME',ExeName);
Replace(ExeName,target_info.exeext,'');
Replace(BootStr,'$SYM',ExeName);
{ Write bootfile }
bootfile:=TScript.Create(outputexedir+ExeName);
bootfile.Add(BootStr);
bootfile.writetodisk;
bootfile.Free;
end;
MakeExecutable:=success; { otherwise a recursive call to link method }
end;