Commit Graph

124 Commits

Author SHA1 Message Date
sergei
1d09005542 + Implemented two-stage removal of empty exe sections. Candidates for removal are first marked with oso_disabled flag, then actually removed. Descendants of TExeOutput that override MemPos_Start may modify list of sections pending removal. In particular, the COFF-specific .reloc section no longer has to be handled in base TExeOutput class.
git-svn-id: trunk@21971 -
2012-07-26 10:04:12 +00:00
sergei
31d004e056 + Basic executable stack support in TExeOutput.
+ Two stubs (TExeOutput.Load_DynamicObject and TObjInput.CanReadObjData) to override in ELF linker.
+ Stop linking if errors were detected while loading object files.
* Changed TStaticLibrary to TObject. It is never looked up by name, so hashing is redundant; moreover its name has been changed to TCmdStr, which may be trimmed by TFPHashList. 

git-svn-id: trunk@21968 -
2012-07-25 11:08:54 +00:00
sergei
24c7b7f433 * If alignment requirement of data is bigger than alignment of the section being written to, increase section alignment to match. This mostly affects cases of non-smart linking, where wrong initial alignment used to cause hard to catch misalignment issues. It also largely obsoletes the need to supply the initial section alignment (hidden tai_section constructor,etc).
* Likewise, when merging object sections into exe sections, set alignment of exe section to maximum value.

git-svn-id: trunk@21964 -
2012-07-24 08:38:11 +00:00
sergei
06844fdb23 * Entirely moved relocation fixup functionality from TObjSection to TExeOutput.
git-svn-id: trunk@21944 -
2012-07-22 07:21:11 +00:00
sergei
2bc792fe97 * TObjData.FName made protected.
* Allow EntryName to remain unspecified.

git-svn-id: trunk@21940 -
2012-07-20 12:50:21 +00:00
sergei
3b3da49ad6 * Merged TElfObjSection.secshidx and TCoffObjSection.secidx into TObjSection.index.
git-svn-id: trunk@21848 -
2012-07-10 13:34:55 +00:00
sergei
712f5d1c26 - Removed oso_readonly and oso_noload section options, it is enough to have just oso_write and oso_load to express possible section states.
git-svn-id: trunk@21825 -
2012-07-09 12:58:37 +00:00
sergei
1c5fa5448e * Do not dereference null pointer, 'real' (not script-provided) common symbols don't have objsection assigned at this point.
git-svn-id: trunk@21748 -
2012-07-01 13:42:25 +00:00
sergei
65e701a198 * Fixed operation of 'PROVIDE' link script directive (all symbols were incorrectly put into .bss section, instead of locations given by placement of the directive).
* Changed type of symbols created by link script from AT_FUNCTION to AT_DATA. This isn't significant for COFF, but matters for ELF targets.
* Changed alignment of .gnu_debuglink section from 0 to 1, this matches behavior of ld.

git-svn-id: trunk@21741 -
2012-06-30 17:32:45 +00:00
sergei
c65abdeeae * Implemented link map generation without involving TObjSection.ObjSymbolDefines, and removed the latter because it isn't used otherwise. The new approach uses CPU/memory only when map generation is requested.
git-svn-id: trunk@21737 -
2012-06-30 07:51:45 +00:00
sergei
80bbd388f9 * Made removal of unused ExeSymbols a separate procedure, call it earlier and regardless of presence of the 'SYMBOLS' directive in the linker script.
git-svn-id: trunk@21727 -
2012-06-27 20:26:49 +00:00
sergei
8c8883cc35 * Once TExeOutput is accessible in TObjSection.fixuprelocs, its ImageBase can be used directly, without a need to have a copy in every TObjSection.
* Also simplified COFF symbol loading, separate array of symbol sizes is not needed because these sizes never change during the load.

git-svn-id: trunk@21704 -
2012-06-25 18:39:46 +00:00
sergei
bd7ebdce18 * ELF relocation cleanup/improvement:
+ Store size of relocation and explicit addend in TObjRelocation (reusing 'orgsize' field for the latter). This removes need for reading addends back from section data, addends are stored in full 64 bits and therefore not truncated.
  + Relocation style is now controlled by relocs_use_addend variable instead of $ifdef's.
  - Removed (never working) checks forbidding relocations of readonly sections. At the linking stage readonly sections *can* have relocations, executable stage is different matter to be handled elsewhere.
  - removed ugly hack with mapping 32-bit absolute relocations to RELOC_RVA.
  + support 64-bit relative relocations.
  * actualized list of x86_64 relocations.

git-svn-id: trunk@21662 -
2012-06-20 14:16:48 +00:00
sergei
98fffb7981 * Overloaded MemPos_ExeSection and DataPos_ExeSection accepting a TExeSection instead of name.
git-svn-id: trunk@21661 -
2012-06-20 13:33:18 +00:00
sergei
7cda919547 * Pass ExeOutput as argument to TObjSection.fixuprelocs, needed for ELF targets to relocate the complex GOT stuff.
* TExeSection.AddObjSection made virtual.
- TExeSymbol.ExeSection is nowhere used, removed.

git-svn-id: trunk@21626 -
2012-06-16 22:33:26 +00:00
sergei
807a2f243f * Fixed control flow after r21492, was causing IE 200602252 if compiling with "-g -Xg" (Mantis #22224)
- Also removed accidentally committed debug code.

git-svn-id: trunk@21522 -
2012-06-07 22:30:50 +00:00
sergei
7d3294b504 * Moved 4 procedures for basic reading/writing TObjSection contents into ogcoff.pas, so they don't have to be reimplemented for every output format.
git-svn-id: trunk@21492 -
2012-06-05 19:52:40 +00:00
sergei
8814f56081 * Fixed oso_debug section attribute being not preserved while reading/writing DJCOFF object files.
* Fixed header data positions for DJCOFF executables, they need adjustment by stub size.
* Fixed symbol values in DJCOFF executables, they must be absolute.
* Fixed missing oso_common flag on TExeOutput.commonObjSection, causing incorrect COFF relocations to this section.

git-svn-id: trunk@21408 -
2012-05-28 11:46:52 +00:00
Jonas Maebe
6432c82c01 * don't pass property as var-parameter to val()
git-svn-id: trunk@20137 -
2012-01-21 16:54:57 +00:00
sergei
6280ee2eed * Changed attributes of .pdata section so it is smart-linkable on x86_64.
* Changed alignment of .pdata section to 4.
+ Support saving RELOC_NONE relocations to .o files and reading them back on x86_64.

git-svn-id: trunk@19070 -
2011-09-15 15:22:03 +00:00
sergei
c9f92c0323 * Excluded oso_executable from attributes of user sections. User sections may currently be specified only for variables and typed consts, which are not executable.
* Fixed TLS directory size written to PE header when cross-compiling. It must be the value for target, not for host.

git-svn-id: trunk@18024 -
2011-07-27 14:10:22 +00:00
sergei
6a2e87121b * ogcoff.pas: sort all objsections having '$' in the name, not just .idata$*. This is a documented PECOFF feature and it is required for tls callback stuff to link correctly regardless of the order of declarations in source files.
git-svn-id: trunk@17968 -
2011-07-10 12:24:35 +00:00
pierre
92c92e1945 * Add oso_keep option to threadvar section if FPC_USE_TLS_DIRECTORY is set
git-svn-id: trunk@17905 -
2011-07-01 14:40:02 +00:00
pierre
c07bcefb6b * Fix anumval wrong overwriting as found out by Sergey
git-svn-id: trunk@17861 -
2011-06-28 20:39:53 +00:00
pierre
239944f8d0 + Use DLL name in assembler labels used to import DLL functions/variables
in Windows, Emx and OS2 targets.
    This fixes test failures: test/library/tlib1b.pp and lib2b.pp

    link unit TLinker.AddImportSymbol: Added symmangledname parameter.
    ogbase unit TImportSymbol.Create: Add AMangledName parameter.
    fmodule unit TModule.AddExternalImport: Add symmangledname parameter.
    fppu unit: Also put mangled name string for imported symbol.
    ppu unit: Increase PPUVersion
    utils/ppudump.pp: Adapt to PPU change above.
    systems/T_OS units: Use ImportSymbol.MangledName property to create
    import libraries or .idata sections.

git-svn-id: trunk@17804 -
2011-06-23 11:38:57 +00:00
pierre
1a9f4ba314 * Improve ogbase linker script support, add warnings for unknown entries
git-svn-id: trunk@17784 -
2011-06-21 16:49:50 +00:00
florian
c97869bd89 * merge user sections support branch
git-svn-id: trunk@17285 -
2011-04-10 18:08:59 +00:00
armin
7eace122dc internal linker support for creating novell netware loadable modules
git-svn-id: trunk@17192 -
2011-03-27 14:47:25 +00:00
florian
f328b6d635 + user section type
+ parsing of section directive for variables
  + section test
  + write section names in the assembler/binary writers correctly
  * allow section only after ; and for embedded targets

git-svn-id: branches/usersections@17154 -
2011-03-20 15:42:28 +00:00
florian
26fbfaf5a7 + introduce the usage of asizeint/asizeuint for cpus with sizeof("alu")<>sizeof(pointer)
git-svn-id: trunk@17011 -
2011-02-26 20:10:03 +00:00
pierre
292e85a59a * Partial fix for i386 linux PIC code generation
git-svn-id: trunk@16080 -
2010-10-05 08:07:15 +00:00
Jonas Maebe
28cd8271c9 * initial version of internal Mach-O/i386 assembler by Dmitry Boyarintsev
(mantis #15163)

git-svn-id: trunk@14628 -
2010-01-12 19:52:55 +00:00
florian
c1f3d8dcaa * unified names of system_*/systems_* sets
git-svn-id: trunk@14566 -
2010-01-07 18:16:20 +00:00
Jonas Maebe
edacea82be * changed assembler directives for darwin lazy/non-lazy symbol pointers
and init/fini routines into their section equivalents (based on patch
    by Dmitry Boyarintsev, mantis #15037)

git-svn-id: trunk@14128 -
2009-11-09 22:20:01 +00:00
Jonas Maebe
0c675a4039 * the objc1 unit has been renamed to objc
* the objc unit links against the Foundation instead of against the Cocoa
    framework, and inludes an interface to either the fragile or non-fragile
    obj-c run time depending on the target platform
  + support for the non-fragile Objective-C runtime/ABI, as used on Mac OS X
    for ARM (iPhone) 64 bit (PowerPC/64, x86_64) -- all these targets now
    are now also supported for the objectivec1 modeswitch
  + support for private_extern symbol bindings, required for the above
  * mark objcclasses that are declared in the implementation section of a
    unit as "hidden" (not sure what the effect is, since the Objective-C
    runtime does not seem to do anything with this flag)
  * enabled all obj-c tests for the newly supported platforms

git-svn-id: branches/objc@13763 -
2009-09-27 15:24:50 +00:00
yury
5cd83b26d9 * More proper check for executable image size limits.
* Proper handling of 64-bit COFF relocations.
* Use jumps with 32-bit relative addressing in imports on win64.
* This fixes are related to bug #13657. The bug is not fully fixed yet...

git-svn-id: trunk@13104 -
2009-05-06 18:07:07 +00:00
Jonas Maebe
6165536b5e + added {$modeswitch objectivec1}/-Mobjectivec1 mode switch to enable
the use of Objective-C 1.0 constructs. Because it is a mode switch, it
    can be used cumulatively with every syntax mode. Note that a {$mode xxx}
    statement resets all mode switches as well, so you cannot use the
    -Mobjectivec1 variant if you have such a statement in a unit. This
    modeswitch is currently only enabled for Darwin/PowerPC and Darwin/i386,
    as the backend support is not yet implemented for other platforms.
  + implemented selector() statement that can be used to create an Objective-C
    selector for the message with the specified *constant* name (in the future,
    it will also work for Objective-C method identifiers)
  + added SEL type to the system unit (the selector() statement returns it)
  + added all Objective-C segments to the assembler writers
  + (currently mostly dummy) objc1 unit that is automatically included if the
    {$modeswitch objectivec1} statement is used
  + some tests for the selector() statement

git-svn-id: trunk@12870 -
2009-03-08 18:40:32 +00:00
yury
afa7ade545 * Replace ? and @ in external names only if the external is imported from DLL on Windows.
Also @ character is allowed in symbol names by GNU AS for x86.

git-svn-id: trunk@12842 -
2009-03-01 12:24:53 +00:00
Károly Balogh
049280bc21 * fix bug #8391 only for arm-wince, because otherwise it breaks other platforms (incl. i386-win32)
git-svn-id: trunk@11871 -
2008-10-09 18:37:56 +00:00
yury
23da33b75a * Fixed hang while linking in some cases.
git-svn-id: trunk@11508 -
2008-08-03 21:19:33 +00:00
yury
4cabbe0e39 * Fixed compiler cycling with enabled range and overflow checking.
git-svn-id: trunk@11489 -
2008-07-29 21:11:03 +00:00
yury
c84aa860bd * Added error message if resulting executable image size is too big to fit in memory. bug #11702.
git-svn-id: trunk@11481 -
2008-07-28 21:54:18 +00:00
yury
5e11e697b4 * Use unsigned integers for sizes and positions to break 2GB limit in tdynamicarray, object writer, internal linker, coff and PE headers.
git-svn-id: trunk@11480 -
2008-07-28 20:29:25 +00:00
yury
491f0fa1d8 * Replaced all user defined warnings by TODO comments to reduce compiler noise.
git-svn-id: trunk@11443 -
2008-07-23 11:00:03 +00:00
yury
403ce8c2c1 * Fixed removing stabs for unused functions. It fixes debugging problems.
git-svn-id: trunk@10963 -
2008-05-13 13:12:07 +00:00
Jonas Maebe
f36e5411af * split cpu64bit compiler define into
a) cpu64bitaddr, which means that we are generating a compiler which
       will generate code for targets with a 64 bit address space/abi
    b) cpu64bitalu, which means that we are generating a compiler which
       will generate code for a cpu with support for 64 bit integer
       operations (possibly running in a 32 bit address space, depending
       on the cpu64bitaddr define)
   All cpus which had cpu64bit set now have both the above defines set,
   and none of the 32 bit cpus have cpu64bitalu set (and none will
   compile with it currently)
  + pint and puint types, similar to aint/aword (not pword because that
    that conflicts with pword=^word)
  * several changes from aint/aword to pint/pword
  * some changes of tcgsize2size[OS_INT] to sizeof(pint)

git-svn-id: trunk@10320 -
2008-02-13 20:44:00 +00:00
peter
793fd8fc09 * Add -Xg to help pages
* -Xg now produces a .dbg file with debuginfo
    that can be used by gdb. The main executable gets
    a debuglink section that references the .dbg file.

git-svn-id: trunk@9778 -
2008-01-17 01:20:37 +00:00
Jonas Maebe
0bf43d223b * fixed uses of custom-length string types in function/property
result types

git-svn-id: trunk@9486 -
2007-12-17 13:36:30 +00:00
peter
c767df348f * idata must be aligned on 4 bytes to prevent a corrupt
idata2 section where the entries are always 20 bytes

git-svn-id: trunk@8725 -
2007-10-02 18:41:47 +00:00
Jonas Maebe
70c2414daa * split off sec_rodata_norel from sec_rodata, and only put constant data
without relocations in sec_rodata_norel. It should be possible to make
    this new section read-only on all platforms, although currently it
    is only done for darwin, and for non-pic code written using the
    -Aas assembler writer.

    Most platforms also have a special section for "constant but with
    relocations" data, but such a section is currently only used for
    Darwin (others still use plain .data sections for that, like they
    did before)

git-svn-id: trunk@8650 -
2007-09-26 15:49:01 +00:00