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2 Commits

Author SHA1 Message Date
grischka
9670d10294 fix github CI & stuff
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workflows/build.yml:
- win32/64: install mingw32/64 gcc on msys (because the default
  gcc installed elsewhere seems to use ucrt, producing incompatible
  fp printf formats.)
tccgen.c:
- cleanup funcs: save any lvalues from return expressions.  Also use
  get_temp_local_var() which however was causing a problem on i386
  because its gfunc_call() removes the arguments from vstack and by
  that defeats the 'in-use'  tracking of get_temp_local_var().  Fixed by:
i386/arm/arm64/x86_64-gen.c:
- in gfunc_call(): save_regs before anything else, fixes
  problems seen in arm64/i386
tccpp.c:
- allow arm asm specific use of '#' in macros
libtcc.c:
- organize -M options, and:
tccpe.c:
- move the subsystem option parsing from libtcc.c
tccelf.c:
- improved error handling in tcc_load_ldscript()
lib/atomic.S:
- TCC_TARGET_... not defined when building the lib
- endbrNN security feature not supported by TCC
tests/tests2/136_atomic_gcc_style.c:
- never use standard assert() in tests
2025-07-16 21:32:21 +02:00
kbkpbot
36ff4f52b5 Add GCC-style atomic builtins: __atomic_*_n
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This commit adds GCC-compatible atomic builtins to stdatomic.h for
better compatibility with code relying on GCC's atomic primitives.

1. ​**​New Macros​**​:
   - `__atomic_compare_exchange_n`.
   - `__atomic_load_n`.
   - `__atomic_store_n`.

2. ​**​Motivation​**​:
   - Improves compatibility with codebases using GCC's atomic builtins
     directly.
   - Simplifies atomic operations by allowing direct value passing
     (instead of pointers), enhancing code readability.
   - Aligns TCC's atomic support closer to GCC/Clang for cross-compiler
     projects.

3. ​**​Testing​**​:
   - Verified with basic test cases (integer CAS, load/store) on x86.
   - Confirmed no regressions in existing atomic operations.

- This change does not affect existing C11 `atomic_*` APIs.
- Struct types are intentionally unsupported in `_n` variants due to
  complexity.
2025-04-19 08:05:27 +08:00