Commit Graph

2 Commits

Author SHA1 Message Date
grischka
64552b3faa tccelf: rework linker_sym (_end/end) logic
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- tcc_add_linker_symbols():
    don't add for dlls
- bind_exe_dynsym():
    update _end symbol when done
    allow data definition in the .so override a bss symbol
    in the exe. For example
       exe: int x;
       .so: int x = 123;
- set_elf_sym():
    cannot compare section numbers with symbols from dlls
  tcc_load_obj():
    return -1 from symbol conflict errors

tests/tests2/148_linker_symbols:
- use only one file
- make it print useful output rather than just "2 errors."
  In general, the tests2 setup with .expect files is meant
  to compare text output.  For example:
      printf("val = %d\n", val);

  .expect file can be generated or refreshed using
       make tests2.nnn+
   or in order to force generation with tcc itself
       make tests2.nnn+ GEN-CC='$(GEN-TCC)'

tccgen.c:
- __attribute__((section(...))) : set section type/flags
    according to first usage
- fix bcheck bounds for -fcommon
2026-08-05 17:41:23 +02:00
Mounir IDRASSI
384614a945 tccelf: provide complete ELF boundary symbols
The traditional boundary symbols were recorded against the canonical .text, .data and .bss sections before dynamic binding and final layout. Separately named allocatable sections and copy-relocated data could therefore fall outside the advertised ranges.

Track definitions synthesized by the linker and finalize them from the ordered loadable sections. Refresh both regular and dynamic symbol tables, and give the plain etext, edata and end names PROVIDE semantics on every ELF target while preserving user definitions.

Cover archive references, overrides, copy relocations and independently named text/data/bss sections.

Reported-by: Richard Wheeler <18647491+PythonWillRule@users.noreply.github.com>
2026-07-28 18:06:04 +09:00