 sergei
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8688f5e7b9
* Moved ELF definitions into a separate unit, which can be reused by CPU back-end units.
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13 vuotta sitten |
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sergei
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129d737523
+ Allow TObjRelocation to be created without a symbol, such relocations are being used to tag specific positions on non-x86 targets.
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13 vuotta sitten |
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sergei
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a730830c19
* Factored code for allocating GOT slots into TElfExeOutput.AllocGOTSlot.
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13 vuotta sitten |
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sergei
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a7e7d97da6
* ELF linker: fixed written values of STT_TLS symbols, they must be relative to PT_TLS segment address.
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13 vuotta sitten |
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sergei
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0369a30f49
* Internal linker: made sec_rodata_norel read-only.
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13 vuotta sitten |
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sergei
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2c011312db
* Changed TElf32Header and TElf64Header definitions, making them look closer to canonical ones (first 16 bytes are a single array field, addressable via EI_xx indices).
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13 vuotta sitten |
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sergei
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1aea22a6ca
+ Internal linker: generic and ELF-specific support for grouped sections, allow same symbol to be defined in several COMDAT groups.
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13 vuotta sitten |
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sergei
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277200e7ae
+ ELF linker: Support writing RELATIVE dynamic relocations ahead of the rest, and their number in DT_REL[A]COUNT dynamic tag (still needs changes in CPU-specific code to function properly).
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13 vuotta sitten |
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sergei
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d019670495
- Removed generic implementation of TObjData.sectionname, its existence is useless because it is completely overridden by all TObjData descendants.
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13 vuotta sitten |
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sergei
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4410fe86d2
* ELF linker: moved some code (which must be executed only once when linking with separate debug file) from MemPos_Start into AfterUnusedSectionRemoval, this removes some checks and simplifies things.
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13 vuotta sitten |
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sergei
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6023f73e2a
* ELF linker: improved dynamic symbol handling.
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13 vuotta sitten |
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sergei
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6d70009f06
+ ELF linker. Works on x86_64-linux and i386-linux good enough to pass the testsuite, but still requires a lot of work in nearly all aspects. In particular, no attempt to resolve symbols from shared libs is done, everything is just treated as imports. Symbol versioning isn't supported either.
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13 vuotta sitten |
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sergei
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339d06aa58
* When writing section names of .o files, let sh_name of sections with relocations point into names of corresponding relocation sections past the .rel/.rela prefix. In case of smartlinked sections this saves almost half of .shstrtab section size.
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13 vuotta sitten |
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sergei
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c41b407119
* Changed TObjSection.WriteStr method to write a zero byte after the string.
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13 vuotta sitten |
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sergei
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c529356693
* Split most CPU-specific code from ogelf.pas into newly created cpuelf.pas units in CPU subdirectories.
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13 vuotta sitten |
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sergei
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f14e038172
+ Implemented writeReloc_internal method for TElfObjSection.
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13 vuotta sitten |
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sergei
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95535ea845
- Do not create any default object sections. On targets with section-based smartlink these sections remain empty and only cause linker to do useless job of removing them. The same happens when loading object files because duplicate section names are allowed at that time. On targets without smartlink they don't stay empty, but the internal assembler creates sections when required, so not creating initial sections effectively doesn't change anything.
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13 vuotta sitten |
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sergei
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944189f046
- don't supply sh_link and sh_info members to TElfObjSection.create_ext.
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13 vuotta sitten |
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sergei
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d4b7a6a9bd
+ Added some more ELF definitions
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13 vuotta sitten |
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sergei
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3b3da49ad6
* Merged TElfObjSection.secshidx and TCoffObjSection.secidx into TObjSection.index.
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13 vuotta sitten |
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sergei
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27f342225a
* Changed most fields of ELF structures to unsigned, to conform to their official declarations.
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13 vuotta sitten |
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sergei
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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.
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13 vuotta sitten |
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sergei
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37b8cd1b7a
* If relocation to a local label cannot be translated into (section+offset), then the target symbol must be written into symbol table. Fixes IE 200603012 in number of tests with -Cg on i386-linux (and possibly other targets with internal ELF assembler).
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13 vuotta sitten |
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sergei
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1284be72ea
* Fixed alignment of '.data' section, which got accidentally changed from 16 to 8 by r21374, causing e.g. tests/test/tasm3.pp to crash if compiled without -Cg and on target without tf_smartlink_sections. The root problem is not here, however: if appending data with higher alignment to a section with lower alignment, we likely need to raise the alignment of section.
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13 vuotta sitten |
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sergei
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bd7ebdce18
* ELF relocation cleanup/improvement:
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13 vuotta sitten |
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sergei
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85f6062e05
* Reworked writing ELF symbols into a separate class, TElfSymtab, which is also suitable for creating symbol tables in executable and dynamic ELF files.
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13 vuotta sitten |
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sergei
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d0df2b247b
* ogelf.pas: pass objdata into TElfObjSection.create_ext, so sections created via create_ext are 'owned' the same way as ones created via objData.CreateSection.
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13 vuotta sitten |
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sergei
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cc5fda2a1e
+ ogelf.pas: added definitions for program headers and .dynamic section, and reformatted existing ones to reduce line count.
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13 vuotta sitten |
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sergei
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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.
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13 vuotta sitten |
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sergei
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263b46be86
* ogelf.pas: Changed MaybeSwap* into procedures, makes them more suitable for reuse in the upcoming reader (and reduces amount of copying while writing, too).
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13 vuotta sitten |
