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fpc/compiler/systems/t_embed.pas

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{
This unit implements support import,export,link routines
for the (arm) GameBoy Advance target
Copyright (c) 2001-2002 by Peter Vreman
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_embed;
{$i fpcdefs.inc}
interface
implementation
uses
SysUtils,
cutils,cfileutl,cclasses,
globtype,globals,systems,verbose,script,fmodule,i_embed,link,
cpuinfo;
type
TlinkerEmbedded=class(texternallinker)
private
Function WriteResponseFile: Boolean;
public
constructor Create; override;
procedure SetDefaultInfo; override;
function MakeExecutable:boolean; override;
end;
{*****************************************************************************
TlinkerEmbedded
*****************************************************************************}
Constructor TlinkerEmbedded.Create;
begin
Inherited Create;
SharedLibFiles.doubles:=true;
StaticLibFiles.doubles:=true;
end;
procedure TlinkerEmbedded.SetDefaultInfo;
begin
with Info do
begin
ExeCmd[1]:='ld -g $OPT $DYNLINK $STATIC $GCSECTIONS $STRIP -L. -o $EXE -T $RES';
end;
end;
Function TlinkerEmbedded.WriteResponseFile: Boolean;
Var
linkres : TLinkRes;
i : longint;
HPath : TCmdStrListItem;
s,s1,s2 : TCmdStr;
prtobj,
cprtobj : string[80];
linklibc : boolean;
found1,
found2 : boolean;
begin
WriteResponseFile:=False;
linklibc:=(SharedLibFiles.Find('c')<>nil);
{$if defined(ARM) or defined(i386) or defined(AVR)}
prtobj:='';
{$else}
prtobj:='prt0';
{$endif}
cprtobj:='cprt0';
if linklibc then
prtobj:=cprtobj;
{ Open link.res file }
LinkRes:=TLinkRes.Create(outputexedir+Info.ResName);
{ 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('+(maybequoted(s))+')');
HPath:=TCmdStrListItem(HPath.Next);
end;
LinkRes.Add('INPUT (');
{ add objectfiles, start with prt0 always }
//s:=FindObjectFile('prt0','',false);
if prtobj<>'' then
begin
s:=FindObjectFile(prtobj,'',false);
LinkRes.AddFileName(s);
end;
{ try to add crti and crtbegin if linking to C }
if linklibc then
begin
if librarysearchpath.FindFile('crtbegin.o',false,s) then
LinkRes.AddFileName(s);
if librarysearchpath.FindFile('crti.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;
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;
end;
end;
{ be sure that libc&libgcc is the last lib }
if linklibc then
begin
LinkRes.Add('-lc');
LinkRes.Add('-lgcc');
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 linklibc then
begin
found1:=librarysearchpath.FindFile('crtend.o',false,s1);
found2:=librarysearchpath.FindFile('crtn.o',false,s2);
if found1 or found2 then
begin
LinkRes.Add('INPUT(');
if found1 then
LinkRes.AddFileName(s1);
if found2 then
LinkRes.AddFileName(s2);
LinkRes.Add(')');
end;
end;
{$ifdef ARM}
case current_settings.controllertype of
ct_none:
;
ct_lpc2114,
ct_lpc2124,
ct_lpc2194:
with linkres do
begin
Add('ENTRY(_START)');
Add('MEMORY');
Add('{');
Add(' flash : ORIGIN = 0, LENGTH = 256K');
Add(' ram : ORIGIN = 0x40000000, LENGTH = 16K');
Add('}');
Add('_stack_top = 0x40003FFC;');
end;
ct_at91sam7s256,
ct_at91sam7se256,
ct_at91sam7x256,
ct_at91sam7xc256:
with linkres do
begin
Add('ENTRY(_START)');
Add('MEMORY');
Add('{');
Add(' flash : ORIGIN = 0, LENGTH = 256K');
Add(' ram : ORIGIN = 0x200000, LENGTH = 64K');
Add('}');
Add('_stack_top = 0x20FFFC;');
end;
ct_stm32f103re:
with linkres do
begin
Add('ENTRY(_START)');
Add('MEMORY');
Add('{');
Add(' flash : ORIGIN = 0x08000000, LENGTH = 512K');
Add(' ram : ORIGIN = 0x20000000, LENGTH = 64K');
Add('}');
Add('_stack_top = 0x2000FFFC;');
end;
else
internalerror(200902011);
end;
with linkres do
begin
Add('SECTIONS');
Add('{');
Add(' .text :');
Add(' {');
Add(' KEEP(*(.init, .init.*))');
Add(' *(.text, .text.*)');
Add(' *(.strings)');
Add(' *(.rodata, .rodata.*)');
Add(' *(.comment)');
Add(' _etext = .;');
Add(' } >flash');
Add(' .data :');
Add(' {');
Add(' _data = .;');
Add(' *(.data, .data.*)');
Add(' KEEP (*(.fpc .fpc.n_version .fpc.n_links))');
Add(' _edata = .;');
Add(' } >ram AT >flash');
Add(' .bss :');
Add(' {');
Add(' _bss_start = .;');
Add(' *(.bss, .bss.*)');
Add(' *(COMMON)');
Add(' } >ram');
Add('. = ALIGN(4);');
Add('_bss_end = . ;');
Add('}');
Add('_end = .;');
end;
{$endif ARM}
{$ifdef i386}
with linkres do
begin
Add('ENTRY(_START)');
Add('SECTIONS');
Add('{');
Add(' . = 0x100000;');
Add(' .text ALIGN (0x1000) :');
Add(' {');
Add(' KEEP(*(.init, .init.*))');
Add(' *(.text, .text.*)');
Add(' *(.strings)');
Add(' *(.rodata, .rodata.*)');
Add(' *(.comment)');
Add(' _etext = .;');
Add(' }');
Add(' .data ALIGN (0x1000) :');
Add(' {');
Add(' _data = .;');
Add(' *(.data, .data.*)');
Add(' KEEP (*(.fpc .fpc.n_version .fpc.n_links))');
Add(' _edata = .;');
Add(' }');
Add(' . = ALIGN(4);');
Add(' .bss :');
Add(' {');
Add(' _bss_start = .;');
Add(' *(.bss, .bss.*)');
Add(' *(COMMON)');
Add(' }');
Add('_bss_end = . ;');
Add('}');
Add('_end = .;');
end;
{$endif i386}
{$ifdef AVR}
with linkres do
begin
{ linker script from ld 2.19 }
Add('ENTRY(_START)');
Add('OUTPUT_FORMAT("elf32-avr","elf32-avr","elf32-avr")');
Add('OUTPUT_ARCH(avr:2)');
Add('MEMORY');
Add('{');
Add(' text (rx) : ORIGIN = 0, LENGTH = 8K');
Add(' data (rw!x) : ORIGIN = 0x800060, LENGTH = 0xffa0');
Add(' eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K');
Add(' fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K');
Add(' lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K');
Add(' signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K');
Add('}');
Add('SECTIONS');
Add('{');
Add(' /* Read-only sections, merged into text segment: */');
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 :');
Add(' {');
Add(' *(.rel.text)');
Add(' *(.rel.text.*)');
Add(' *(.rel.gnu.linkonce.t*)');
Add(' }');
Add(' .rela.text :');
Add(' {');
Add(' *(.rela.text)');
Add(' *(.rela.text.*)');
Add(' *(.rela.gnu.linkonce.t*)');
Add(' }');
Add(' .rel.fini : { *(.rel.fini) }');
Add(' .rela.fini : { *(.rela.fini) }');
Add(' .rel.rodata :');
Add(' {');
Add(' *(.rel.rodata)');
Add(' *(.rel.rodata.*)');
Add(' *(.rel.gnu.linkonce.r*)');
Add(' }');
Add(' .rela.rodata :');
Add(' {');
Add(' *(.rela.rodata)');
Add(' *(.rela.rodata.*)');
Add(' *(.rela.gnu.linkonce.r*)');
Add(' }');
Add(' .rel.data :');
Add(' {');
Add(' *(.rel.data)');
Add(' *(.rel.data.*)');
Add(' *(.rel.gnu.linkonce.d*)');
Add(' }');
Add(' .rela.data :');
Add(' {');
Add(' *(.rela.data)');
Add(' *(.rela.data.*)');
Add(' *(.rela.gnu.linkonce.d*)');
Add(' }');
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(' .rel.bss : { *(.rel.bss) }');
Add(' .rela.bss : { *(.rela.bss) }');
Add(' .rel.plt : { *(.rel.plt) }');
Add(' .rela.plt : { *(.rela.plt) }');
Add(' /* Internal text space or external memory. */');
Add(' .text :');
Add(' {');
Add(' *(.vectors)');
Add(' KEEP(*(.vectors))');
Add(' /* For data that needs to reside in the lower 64k of progmem. */');
Add(' *(.progmem.gcc*)');
Add(' *(.progmem*)');
Add(' . = ALIGN(2);');
Add(' __trampolines_start = . ;');
Add(' /* The jump trampolines for the 16-bit limited relocs will reside here. */');
Add(' *(.trampolines)');
Add(' *(.trampolines*)');
Add(' __trampolines_end = . ;');
Add(' /* For future tablejump instruction arrays for 3 byte pc devices.');
Add(' We don''t relax jump/call instructions within these sections. */');
Add(' *(.jumptables)');
Add(' *(.jumptables*)');
Add(' /* For code that needs to reside in the lower 128k progmem. */');
Add(' *(.lowtext)');
Add(' *(.lowtext*)');
Add(' __ctors_start = . ;');
Add(' *(.ctors)');
Add(' __ctors_end = . ;');
Add(' __dtors_start = . ;');
Add(' *(.dtors)');
Add(' __dtors_end = . ;');
Add(' KEEP(SORT(*)(.ctors))');
Add(' KEEP(SORT(*)(.dtors))');
Add(' /* From this point on, we don''t bother about wether the insns are');
Add(' below or above the 16 bits boundary. */');
Add(' *(.init0) /* Start here after reset. */');
Add(' KEEP (*(.init0))');
Add(' *(.init1)');
Add(' KEEP (*(.init1))');
Add(' *(.init2) /* Clear __zero_reg__, set up stack pointer. */');
Add(' KEEP (*(.init2))');
Add(' *(.init3)');
Add(' KEEP (*(.init3))');
Add(' *(.init4) /* Initialize data and BSS. */');
Add(' KEEP (*(.init4))');
Add(' *(.init5)');
Add(' KEEP (*(.init5))');
Add(' *(.init6) /* C++ constructors. */');
Add(' KEEP (*(.init6))');
Add(' *(.init7)');
Add(' KEEP (*(.init7))');
Add(' *(.init8)');
Add(' KEEP (*(.init8))');
Add(' *(.init9) /* Call main(). */');
Add(' KEEP (*(.init9))');
Add(' *(.text)');
Add(' . = ALIGN(2);');
Add(' *(.text.*)');
Add(' . = ALIGN(2);');
Add(' *(.fini9) /* _exit() starts here. */');
Add(' KEEP (*(.fini9))');
Add(' *(.fini8)');
Add(' KEEP (*(.fini8))');
Add(' *(.fini7)');
Add(' KEEP (*(.fini7))');
Add(' *(.fini6) /* C++ destructors. */');
Add(' KEEP (*(.fini6))');
Add(' *(.fini5)');
Add(' KEEP (*(.fini5))');
Add(' *(.fini4)');
Add(' KEEP (*(.fini4))');
Add(' *(.fini3)');
Add(' KEEP (*(.fini3))');
Add(' *(.fini2)');
Add(' KEEP (*(.fini2))');
Add(' *(.fini1)');
Add(' KEEP (*(.fini1))');
Add(' *(.fini0) /* Infinite loop after program termination. */');
Add(' KEEP (*(.fini0))');
Add(' _etext = . ;');
Add(' } > text');
Add(' .data : AT (ADDR (.text) + SIZEOF (.text))');
Add(' {');
Add(' PROVIDE (__data_start = .) ;');
Add(' *(.data)');
Add(' *(.data*)');
Add(' *(.rodata) /* We need to include .rodata here if gcc is used */');
Add(' *(.rodata*) /* with -fdata-sections. */');
Add(' *(.gnu.linkonce.d*)');
Add(' . = ALIGN(2);');
Add(' _edata = . ;');
Add(' PROVIDE (__data_end = .) ;');
Add(' } > data');
Add(' .bss : AT (ADDR (.bss))');
Add(' {');
Add(' PROVIDE (__bss_start = .) ;');
Add(' *(.bss)');
Add(' *(.bss*)');
Add(' *(COMMON)');
Add(' PROVIDE (__bss_end = .) ;');
Add(' } > data');
Add(' __data_load_start = LOADADDR(.data);');
Add(' __data_load_end = __data_load_start + SIZEOF(.data);');
Add(' /* Global data not cleared after reset. */');
Add(' .noinit :');
Add(' {');
Add(' PROVIDE (__noinit_start = .) ;');
Add(' *(.noinit*)');
Add(' PROVIDE (__noinit_end = .) ;');
Add(' _end = . ;');
Add(' PROVIDE (__heap_start = .) ;');
Add(' } > data');
Add(' .eeprom :');
Add(' {');
Add(' *(.eeprom*)');
Add(' __eeprom_end = . ;');
Add(' } > eeprom');
Add(' .fuse :');
Add(' {');
Add(' KEEP(*(.fuse))');
Add(' KEEP(*(.lfuse))');
Add(' KEEP(*(.hfuse))');
Add(' KEEP(*(.efuse))');
Add(' } > fuse');
Add(' .lock :');
Add(' {');
Add(' KEEP(*(.lock*))');
Add(' } > lock');
Add(' .signature :');
Add(' {');
Add(' KEEP(*(.signature*))');
Add(' } > signature');
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) *(.gnu.linkonce.wi.*) }');
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('}');
end;
{$endif AVR}
{ Write and Close response }
linkres.writetodisk;
linkres.free;
WriteResponseFile:=True;
end;
function TlinkerEmbedded.MakeExecutable:boolean;
var
binstr,
cmdstr : TCmdStr;
success : boolean;
StaticStr,
GCSectionsStr,
DynLinkStr,
StripStr: string;
begin
{ for future use }
StaticStr:='';
StripStr:='';
DynLinkStr:='';
GCSectionsStr:='--gc-sections';
//if not(cs_link_extern in current_settings.globalswitches) then
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,'$OPT',Info.ExtraOptions);
if not(cs_link_on_target in current_settings.globalswitches) then
begin
Replace(cmdstr,'$EXE',(maybequoted(ScriptFixFileName(ChangeFileExt(current_module.exefilename^,'.elf')))));
Replace(cmdstr,'$RES',(maybequoted(ScriptFixFileName(outputexedir+Info.ResName))));
Replace(cmdstr,'$STATIC',StaticStr);
Replace(cmdstr,'$STRIP',StripStr);
Replace(cmdstr,'$GCSECTIONS',GCSectionsStr);
Replace(cmdstr,'$DYNLINK',DynLinkStr);
end
else
begin
Replace(cmdstr,'$EXE',maybequoted(ScriptFixFileName(ChangeFileExt(current_module.exefilename^,'.elf'))));
Replace(cmdstr,'$RES',maybequoted(ScriptFixFileName(outputexedir+Info.ResName)));
Replace(cmdstr,'$STATIC',StaticStr);
Replace(cmdstr,'$STRIP',StripStr);
Replace(cmdstr,'$GCSECTIONS',GCSectionsStr);
Replace(cmdstr,'$DYNLINK',DynLinkStr);
end;
success:=DoExec(FindUtil(utilsprefix+BinStr),cmdstr,true,false);
{ Remove ReponseFile }
if success and not(cs_link_nolink in current_settings.globalswitches) then
DeleteFile(outputexedir+Info.ResName);
{ Post process }
if success and (target_info.system=system_arm_embedded) then
begin
success:=DoExec(FindUtil(utilsprefix+'objcopy'),'-O ihex '+
ChangeFileExt(current_module.exefilename^,'.elf')+' '+
ChangeFileExt(current_module.exefilename^,'.hex'),true,false);
end;
MakeExecutable:=success; { otherwise a recursive call to link method }
end;
{*****************************************************************************
Initialize
*****************************************************************************}
initialization
{$ifdef arm}
RegisterExternalLinker(system_arm_embedded_info,TlinkerEmbedded);
RegisterTarget(system_arm_embedded_info);
{$endif arm}
{$ifdef avr}
RegisterExternalLinker(system_avr_embedded_info,TlinkerEmbedded);
RegisterTarget(system_avr_embedded_info);
{$endif avr}
{$ifdef i386}
RegisterExternalLinker(system_i386_embedded_info,TlinkerEmbedded);
RegisterTarget(system_i386_embedded_info);
{$endif i386}
end.
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