kbkpbot 36ff4f52b5 Add GCC-style atomic builtins: __atomic_*_n ...

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

..

float.h

Define LDBL_MAX_10_EXP for aarch64, riscv

2024-12-12 18:25:20 -08:00

stdalign.h

add C11 stdalign.h header

2019-09-08 15:04:06 +03:00

stdarg.h

stdarg: always have the __builtin_va_* available

2020-04-15 22:06:52 +02:00

stdatomic.h

Add GCC-style atomic builtins: __atomic_*_n

2025-04-19 08:05:27 +08:00

stdbool.h

stdbool.h: Make conformant to ISOC99

2014-04-07 00:30:31 +02:00

stddef.h

Only define alloca on i386/x86_64

2022-04-12 07:07:40 +02:00

stdnoreturn.h

C11 conformance: Add _Noreturn, stdnoreturn.h, and partial _Alignas support

2019-03-20 15:03:27 -04:00

tccdefs.h

Revert "Fix tcc -run on Windows" (almost)

2025-03-26 20:36:20 +01:00

tgmath.h

Overhauled WIN32 math and added missing functions:

2020-11-20 23:34:35 +01:00

varargs.h

win64: use new headers from mingw

2009-07-18 22:06:37 +02:00