x86_64 is the most elaborated, has some degree of indirect function (GNU_IFUNC) and TLS support, so it is even able to link with static libc/pthreads code (tw14265) and produce an executable that can launch (but still fails due to invalid DWARF unwind info).
i386 produces working shared libraries if they are compiled with -Cg, without one your mileage may vary. tw14265 does not link yet due to missing COMDAT group support.
git-svn-id: trunk@22775 -
* TExeOutput.FixupSymbols:
+ Collect AT_GNU_IFUNC symbols in IndirectObjSymbols list for further processing by ELF back-end.
* Do not overwrite bind and size while fixing AB_COMMON symbols, this removes need in storing symbol size in every relocation and dedicated handling of oso_common section.
* Remove symbols with objsection<>nil from lists, so calling FixupSymbols several times skips already processed symbols.
git-svn-id: trunk@22393 -
+ Added TObjSection.WriteBytes method that writes just a string (without zero byte).
* ogelf.pas: Fixed st_value of COMMON symbols, it must contain required symbol alignment.
+ ogelf.pas: Some more definitions.
git-svn-id: trunk@22332 -
+ Allow unresolved external symbols in RemoveUnreferencedSections, such symbols are marked as 'dynamic' if referenced. This approach allows to collect unused sections early and generate import structures only for actually used symbols.
git-svn-id: trunk@22312 -
+ Support linker input source grouping functionality.
* Promote TStaticLibrary to something like generic linker input statement, it can now hold regular ObjData or a group of other TStaticLibrary objects in addition to tarobjectreader.
git-svn-id: trunk@22155 -
* Optimized COFF importing code using the new method.
- Don't create .text sections for imported variables.
- Don't create .idata$6 sections for imports by ordinal.
git-svn-id: trunk@22086 -
+ 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 -
* 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 -
* 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 -
+ 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 -
* 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 -
* 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 -
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 -
+ 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 -
* 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 -
* 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 -
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 -
