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|
Version:
3.2.0 ▾
|
{
Copyright (c) 2011 by Francesco Lombardi
This unit implements support import, export, link routines
for the Wii (PowerPC) target
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
****************************************************************************
}
unit t_wii;
{$i fpcdefs.inc}
interface
implementation
uses
aasmbase,
SysUtils,
cutils,cfileutl,cclasses,
globtype,globals,systems,verbose,cscript,fmodule,i_wii,link;
type
TlinkerWii=class(texternallinker)
private
Function WriteResponseFile: Boolean;
public
constructor Create; override;
procedure SetDefaultInfo; override;
function MakeExecutable:boolean; override;
end;
{****************************************************************************
TLinkerWii
****************************************************************************}
Constructor TLinkerWii.Create;
begin
Inherited Create;
SharedLibFiles.doubles:=true;
StaticLibFiles.doubles:=true;
end;
procedure TLinkerWii.SetDefaultInfo;
begin
with Info do
begin
ExeCmd[1]:='ld -g $OPT $DYNLINK $STATIC $GCSECTIONS $STRIP -L. -o $EXE -T $RES';
end;
end;
Function TLinkerWii.WriteResponseFile : Boolean;
Var
linkres : TLinkRes;
i : longint;
HPath : TCmdStrListItem;
s,s1,s2 : TCmdStr;
linklibc,
linklibgcc : boolean;
found1,
found2 : boolean;
begin
WriteResponseFile:=False;
linklibc:=(SharedLibFiles.Find('c')<>nil);
linklibgcc:=(SharedLibFiles.Find('gcc')<>nil);
LinkRes:=TLinkRes.Create(outputexedir+Info.ResName,true);
{ Write path to search libraries }
HPath:=TCmdStrListItem(current_module.locallibrarysearchpath.First);
while assigned(HPath) do
begin
s:=HPath.Str;
if (cs_link_on_target in current_settings.globalswitches) then
s:=ScriptFixFileName(s);
LinkRes.Add('-L'+s);
HPath:=TCmdStrListItem(HPath.Next);
end;
HPath:=TCmdStrListItem(LibrarySearchPath.First);
while assigned(HPath) do
begin
s:=HPath.Str;
if s<>'' then
LinkRes.Add('SEARCH_DIR("'+s+'")');
HPath:=TCmdStrListItem(HPath.Next);
end;
LinkRes.Add('INPUT (');
{ add objectfiles, start with prt0 always }
// s:=FindObjectFile('prt0','',false);
// LinkRes.AddFileName(s);
{ try to add crti and crtbegin if linking to C }
if linklibc then
begin
if librarysearchpath.FindFile('ecrti.o',false,s) then
LinkRes.AddFileName(s);
end;
if linklibgcc then
begin
if librarysearchpath.FindFile('crtbegin.o',false,s) then
LinkRes.AddFileName(s);
end;
if linklibc or linklibgcc then
begin
if librarysearchpath.FindFile('crtmain.o',false,s) then
LinkRes.AddFileName(s);
end;
while not ObjectFiles.Empty do
begin
s:=ObjectFiles.GetFirst;
if s<>'' then
begin
{ vlink doesn't use SEARCH_DIR for object files }
if not(cs_link_on_target in current_settings.globalswitches) then
s:=FindObjectFile(s,'',false);
LinkRes.AddFileName((maybequoted(s)));
end;
end;
{ Write staticlibraries }
if not StaticLibFiles.Empty then
begin
{ vlink doesn't need, and doesn't support GROUP }
if (cs_link_on_target in current_settings.globalswitches) then
begin
LinkRes.Add(')');
LinkRes.Add('GROUP(');
end;
while not StaticLibFiles.Empty do
begin
S:=StaticLibFiles.GetFirst;
LinkRes.AddFileName((maybequoted(s)));
end;
end;
if (cs_link_on_target in current_settings.globalswitches) then
begin
LinkRes.Add(')');
{ Write sharedlibraries like -l<lib>, also add the needed dynamic linker
here to be sure that it gets linked this is needed for glibc2 systems (PFV) }
linklibc:=false;
linklibgcc:=false;
while not SharedLibFiles.Empty do
begin
S:=SharedLibFiles.GetFirst;
if s<>'c' then
begin
i:=Pos(target_info.sharedlibext,S);
if i>0 then
Delete(S,i,255);
LinkRes.Add('-l'+s);
end
else
begin
LinkRes.Add('-l'+s);
linklibc:=true;
linklibgcc:=true;
end;
end;
{ be sure that libc&libgcc is the last lib }
if linklibgcc then
begin
LinkRes.Add('-lgcc');
end;
if linklibc then
begin
LinkRes.Add('-lc');
end;
end
else
begin
while not SharedLibFiles.Empty do
begin
S:=SharedLibFiles.GetFirst;
LinkRes.Add('lib'+s+target_info.staticlibext);
end;
LinkRes.Add(')');
end;
{ objects which must be at the end }
if linklibgcc then
begin
found1:=librarysearchpath.FindFile('crtend.o',false,s1);
if found1 then
begin
LinkRes.Add('INPUT(');
if found1 then
LinkRes.AddFileName(s1);
LinkRes.Add(')');
end;
end;
if linklibc then
begin
found2:=librarysearchpath.FindFile('ecrtn.o',false,s2);
if found2 then
begin
LinkRes.Add('INPUT(');
if found2 then
LinkRes.AddFileName(s2);
LinkRes.Add(')');
end;
end;
with linkres do
begin
Add('/*');
Add(' * Linkscript for Wii');
Add(' */');
Add('');
Add('OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc");');
Add('OUTPUT_ARCH(powerpc:common);');
Add('EXTERN(_start);');
Add('ENTRY(_start);');
Add('');
Add('PHDRS');
Add('{');
Add(' stub PT_LOAD FLAGS(5);');
Add(' text PT_LOAD FLAGS(5);');
Add(' data PT_LOAD FLAGS(6);');
Add(' bss1 PT_LOAD;');
Add(' bss2 PT_LOAD;');
Add('');
Add('}');
Add('');
Add('SECTIONS');
Add('{');
Add(' /* stub is loaded at physical address 0x00003400 (though both 0x80003400 and 0x00003400 are equivalent for IOS) */');
Add(' /* This can also be used to load an arbitrary standalone stub at an arbitrary address in memory, for any purpose */');
Add(' /* Use -Wl,--section-start,.stub=0xADDRESS to change */');
Add(' . = 0x00003400;');
Add('');
Add(' .stub :');
Add(' {');
Add(' KEEP(*(.stub))');
Add(' } :stub = 0');
Add('');
Add(' /* default base address */');
Add(' /* use -Wl,--section-start,.init=0xADDRESS to change */');
Add(' . = 0x80004000;');
Add('');
Add(' /* Program */');
Add(' .init :');
Add(' {');
Add(' KEEP (*crt0.o(*.init))');
Add(' KEEP (*(.init))');
Add(' } :text = 0');
Add(' .plt : { *(.plt) }');
Add(' .interp : { *(.interp) }');
Add(' .hash : { *(.hash) }');
Add(' .dynsym : { *(.dynsym) }');
Add(' .dynstr : { *(.dynstr) }');
Add(' .gnu.version : { *(.gnu.version) }');
Add(' .gnu.version_d : { *(.gnu.version_d) }');
Add(' .gnu.version_r : { *(.gnu.version_r) }');
Add(' .rel.init : { *(.rel.init) }');
Add(' .rela.init : { *(.rela.init) }');
Add(' .rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }');
Add(' .rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }');
Add(' .rel.fini : { *(.rel.fini) }');
Add(' .rela.fini : { *(.rela.fini) }');
Add(' .rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }');
Add(' .rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }');
Add(' .rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }');
Add(' .rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }');
Add(' .rel.tdata : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }');
Add(' .rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }');
Add(' .rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }');
Add(' .rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }');
Add(' .rel.ctors : { *(.rel.ctors) }');
Add(' .rela.ctors : { *(.rela.ctors) }');
Add(' .rel.dtors : { *(.rel.dtors) }');
Add(' .rela.dtors : { *(.rela.dtors) }');
Add(' .rel.got : { *(.rel.got) }');
Add(' .rela.got : { *(.rela.got) }');
Add(' .rela.got1 : { *(.rela.got1) }');
Add(' .rela.got2 : { *(.rela.got2) }');
Add(' .rel.sdata : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }');
Add(' .rela.sdata : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }');
Add(' .rel.sbss : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }');
Add(' .rela.sbss : { *(.rela.sbss .rela.sbss.* .rel.gnu.linkonce.sb.*) }');
Add(' .rel.sdata2 : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }');
Add(' .rela.sdata2 : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }');
Add(' .rel.sbss2 : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }');
Add(' .rela.sbss2 : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }');
Add(' .rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }');
Add(' .rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }');
Add(' .rel.plt : { *(.rel.plt) }');
Add(' .rela.plt : { *(.rela.plt) }');
Add('');
Add(' .text :');
Add(' {');
Add(' *(.text)');
Add(' *(.text.*)');
Add(' /* .gnu.warning sections are handled specially by elf32.em. */');
Add(' *(.gnu.warning)');
Add(' *(.gnu.linkonce.t.*)');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' } = 0');
Add('');
Add(' .fini :');
Add(' {');
Add(' KEEP (*(.fini))');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' } = 0');
Add(' ');
Add(' PROVIDE (__etext = .);');
Add(' PROVIDE (_etext = .);');
Add(' PROVIDE (etext = .);');
Add('');
Add(' .rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) } :data');
Add(' .rodata1 : { *(.rodata1) }');
Add(' .sdata2 : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) }');
Add(' .sbss2 : { *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) }');
Add(' /* Adjust the address for the data segment. We want to adjust up to');
Add(' the same address within the page on the next page up. */');
Add(' /* Ensure the __preinit_array_start label is properly aligned. We');
Add(' could instead move the label definition inside the section, but');
Add(' the linker would then create the section even if it turns out to');
Add(' be empty, which isn''t pretty. */');
Add(' . = ALIGN(32 / 8);');
Add(' PROVIDE (__preinit_array_start = .);');
Add(' .preinit_array : { *(.preinit_array) }');
Add(' PROVIDE (__preinit_array_end = .);');
Add(' PROVIDE (__init_array_start = .);');
Add(' .init_array : { *(.init_array) }');
Add(' PROVIDE (__init_array_end = .);');
Add(' PROVIDE (__fini_array_start = .);');
Add(' .fini_array : { *(.fini_array) }');
Add(' PROVIDE (__fini_array_end = .);');
Add(' .data :');
Add(' {');
Add(' *(.data)');
Add(' *(.data.*)');
Add(' *(.gnu.linkonce.d.*)');
Add(' SORT(CONSTRUCTORS)');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' }');
Add('');
Add(' .data1 : { *(.data1) }');
Add(' .tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }');
Add(' .tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }');
Add(' .eh_frame : { KEEP (*(.eh_frame)) }');
Add(' .gcc_except_table : { *(.gcc_except_table) }');
Add(' .fixup : { *(.fixup) }');
Add(' .got1 : { *(.got1) }');
Add(' .got2 : { *(.got2) }');
Add(' .dynamic : { *(.dynamic) }');
Add('');
Add(' .ctors :');
Add(' {');
Add(' /* gcc uses crtbegin.o to find the start of');
Add(' the constructors, so we make sure it is');
Add(' first. Because this is a wildcard, it');
Add(' doesn''t matter if the user does not');
Add(' actually link against crtbegin.o; the');
Add(' linker won''t look for a file to match a');
Add(' wildcard. The wildcard also means that it');
Add(' doesn''t matter which directory crtbegin.o');
Add(' is in. */');
Add('');
Add(' KEEP (*crtbegin.o(.ctors))');
Add('');
Add(' /* We don''t want to include the .ctor section from');
Add(' from the crtend.o file until after the sorted ctors.');
Add(' The .ctor section from the crtend file contains the');
Add(' end of ctors marker and it must be last */');
Add('');
Add(' KEEP (*(EXCLUDE_FILE (*crtend.o ) .ctors))');
Add(' KEEP (*(SORT(.ctors.*)))');
Add(' KEEP (*(.ctors))');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' }');
Add('');
Add(' .dtors :');
Add(' {');
Add(' KEEP (*crtbegin.o(.dtors))');
Add(' KEEP (*(EXCLUDE_FILE (*crtend.o ) .dtors))');
Add(' KEEP (*(SORT(.dtors.*)))');
Add(' KEEP (*(.dtors))');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' }');
Add('');
Add(' .jcr : { KEEP (*(.jcr)) }');
Add(' .got : { *(.got.plt) *(.got) }');
Add('');
Add('');
Add(' /* We want the small data sections together, so single-instruction offsets');
Add(' can access them all, and initialized data all before uninitialized, so');
Add(' we can shorten the on-disk segment size. */');
Add('');
Add(' .sdata :');
Add(' {');
Add(' *(.sdata)');
Add(' *(.sdata.*)');
Add(' *(.gnu.linkonce.s.*)');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' }');
Add('');
Add(' _edata = .;');
Add(' PROVIDE (edata = .);');
Add(' ');
Add(' .sbss :');
Add(' {');
Add(' __sbss_start = .;');
Add(' PROVIDE (__sbss_start = .);');
Add(' PROVIDE (___sbss_start = .);');
Add(' *(.dynsbss)');
Add(' *(.sbss)');
Add(' *(.sbss.*)');
Add(' *(.gnu.linkonce.sb.*)');
Add(' *(.scommon)');
Add(' PROVIDE (__sbss_end = .);');
Add(' PROVIDE (___sbss_end = .);');
Add(' . = ALIGN(32); /* REQUIRED. LD is flaky without it. */');
Add(' __sbss_end = .;');
Add(' } :bss1');
Add('');
Add(' .bss :');
Add(' {');
Add(' __bss_start = .;');
Add(' PROVIDE (__bss_start = .);');
Add(' *(.dynbss)');
Add(' *(.bss)');
Add(' *(.bss.*)');
Add(' *(.gnu.linkonce.b.*)');
Add(' *(COMMON)');
Add(' /* Align here to ensure that the .bss section occupies space up to');
Add(' _end. Align after .bss to ensure correct alignment even if the');
Add(' .bss section disappears because there are no input sections. */');
Add('');
Add(' . = ALIGN(32);');
Add('');
Add(' PROVIDE (__bss_end = .);');
Add(' __bss_end = .;');
Add(' } :bss2');
Add('');
Add(' _end = .;');
Add(' PROVIDE(end = .);');
Add(' /* Stabs debugging sections. */');
Add(' .stab 0 : { *(.stab) }');
Add(' .stabstr 0 : { *(.stabstr) }');
Add(' .stab.excl 0 : { *(.stab.excl) }');
Add(' .stab.exclstr 0 : { *(.stab.exclstr) }');
Add(' .stab.index 0 : { *(.stab.index) }');
Add(' .stab.indexstr 0 : { *(.stab.indexstr) }');
Add(' .comment 0 : { *(.comment) }');
Add(' /* DWARF debug sections.');
Add(' Symbols in the DWARF debugging sections are relative to the beginning');
Add(' of the section so we begin them at 0. */');
Add(' /* DWARF 1 */');
Add(' .debug 0 : { *(.debug) }');
Add(' .line 0 : { *(.line) }');
Add(' /* GNU DWARF 1 extensions */');
Add(' .debug_srcinfo 0 : { *(.debug_srcinfo) }');
Add(' .debug_sfnames 0 : { *(.debug_sfnames) }');
Add(' /* DWARF 1.1 and DWARF 2 */');
Add(' .debug_aranges 0 : { *(.debug_aranges) }');
Add(' .debug_pubnames 0 : { *(.debug_pubnames) }');
Add(' /* DWARF 2 */');
Add(' .debug_info 0 : { *(.debug_info) }');
Add(' .debug_abbrev 0 : { *(.debug_abbrev) }');
Add(' .debug_line 0 : { *(.debug_line) }');
Add(' .debug_frame 0 : { *(.debug_frame) }');
Add(' .debug_str 0 : { *(.debug_str) }');
Add(' .debug_loc 0 : { *(.debug_loc) }');
Add(' .debug_macinfo 0 : { *(.debug_macinfo) }');
Add(' /* SGI/MIPS DWARF 2 extensions */');
Add(' .debug_weaknames 0 : { *(.debug_weaknames) }');
Add(' .debug_funcnames 0 : { *(.debug_funcnames) }');
Add(' .debug_typenames 0 : { *(.debug_typenames) }');
Add(' .debug_varnames 0 : { *(.debug_varnames) }');
Add(' /* These must appear regardless of . */');
Add('}');
Add('');
Add('__isIPL = 0;');
Add('__stack_addr = (__bss_start + SIZEOF(.bss) + 0x20000 + 7) & (-8);');
Add('__stack_end = (__bss_start + SIZEOF(.bss));');
Add('__intrstack_addr = (__stack_addr + 0x4000);');
Add('__intrstack_end = (__stack_addr);');
Add('__Arena1Lo = (__intrstack_addr + 31) & (-32);');
Add('__Arena1Hi = (0x817FEFF0);');
Add('__Arena2Lo = (0x90002000);');
Add('__Arena2Hi = (0x933E0000);');
Add('');
Add('__gxregs = (__Arena1Hi + 31) & (-32);');
Add('__ipcbufferLo = (0x933e0000);');
Add('__ipcbufferHi = (0x93400000);');
Add('');
Add('/* for backward compatibility with old crt0 */');
Add('PROVIDE (__stack = (0x817FEFF0));');
Add('');
Add('PROVIDE(__isIPL = __isIPL);');
Add('PROVIDE(__stack_addr = __stack_addr);');
Add('PROVIDE(__stack_end = __stack_end);');
Add('PROVIDE(__intrstack_addr = __intrstack_addr);');
Add('PROVIDE(__intrstack_end = __intrstack_end);');
Add('PROVIDE(__Arena1Lo = __Arena1Lo);');
Add('PROVIDE(__Arena1Hi = __Arena1Hi);');
Add('PROVIDE(__Arena2Lo = __Arena2Lo);');
Add('PROVIDE(__Arena2Hi = __Arena2Hi);');
Add('PROVIDE(__ipcbufferLo = __ipcbufferLo);');
Add('PROVIDE(__ipcbufferHi = __ipcbufferHi);');
Add('PROVIDE(__gxregs = __gxregs);');
end;
{ Write and Close response }
linkres.writetodisk;
linkres.free;
WriteResponseFile:=True;
end;
function TLinkerWii.MakeExecutable:boolean;
var
binstr,
cmdstr : TCmdStr;
success : boolean;
StaticStr,
GCSectionsStr,
DynLinkStr,
StripStr: string;
begin
StaticStr:='';
StripStr:='';
GCSectionsStr:='';
DynLinkStr:='';
if (cs_link_strip in current_settings.globalswitches) and
not(cs_link_separate_dbg_file in current_settings.globalswitches) then
StripStr:='-s';
if (cs_link_map in current_settings.globalswitches) then
StripStr:='-Map '+maybequoted(ChangeFileExt(current_module.exefilename,'.map'));
if create_smartlink_sections then
GCSectionsStr:='--gc-sections';
if not(cs_link_nolink in current_settings.globalswitches) then
Message1(exec_i_linking,current_module.exefilename);
{ Write used files and libraries }
WriteResponseFile();
{ Call linker }
SplitBinCmd(Info.ExeCmd[1],binstr,cmdstr);
Replace(cmdstr,'$EXE',(maybequoted(ScriptFixFileName(ChangeFileExt(current_module.exefilename,'.elf')))));
Replace(cmdstr,'$OPT',Info.ExtraOptions);
Replace(cmdstr,'$RES',(maybequoted(ScriptFixFileName(outputexedir+Info.ResName))));
Replace(cmdstr,'$STATIC',StaticStr);
Replace(cmdstr,'$STRIP',StripStr);
Replace(cmdstr,'$GCSECTIONS',GCSectionsStr);
Replace(cmdstr,'$DYNLINK',DynLinkStr);
success:=DoExec(FindUtil(utilsprefix+BinStr),cmdstr,true,false);
{ Remove ReponseFile }
if (success) and not(cs_link_nolink in current_settings.globalswitches) then
DeleteFile(outputexedir+Info.ResName);
{ Post process }
if success then
begin
success:=DoExec(FindUtil('elf2dol'),ChangeFileExt(current_module.exefilename,'.elf')+' '+
current_module.exefilename,true,false);
end;
MakeExecutable:=success; { otherwise a recursive call to link method }
end;
{*****************************************************************************
Initialize
*****************************************************************************}
initialization
RegisterLinker(ld_wii,TLinkerWii);
RegisterTarget(system_powerpc_wii_info);
end.