kc3-lang/libffi/src/powerpc/internal.h

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• Author : Peter Bergner
  Date : 2025-04-08 05:52:37
  Hash : 3429ed6b
  Message : powerpc: Add static trampoline support (#894) (#895) Add static trampoline support to all three powerpc Linux ABIs, specifically powerpc-linux (32-bit SYSV BE), powerpc64-linux (64-bit ELFv1 BE) and powerpc64le-linux (64-bit ELFv2 LE). This follows the s390x implementation and does not introduce a ffi_closure_*_alt function, but rather jumps directly to the ffi_closure_* function itself. If compiling with --with-gcc-arch=power10 and pc-relative is enabled, we use a simpler and smaller trampoline that utilizes Power10's new pc-relative load instructions.

• src/powerpc/internal.h

• #ifdef FFI_EXEC_STATIC_TRAMP
  /* For the trampoline code table mapping, a mapping size of 64K is chosen.  */
  #define PPC_TRAMP_MAP_SHIFT	16
  #define PPC_TRAMP_MAP_SIZE	(1 << PPC_TRAMP_MAP_SHIFT)
  # ifdef __PCREL__
  #  define PPC_TRAMP_SIZE	24
  # else
  #  define PPC_TRAMP_SIZE	40
  # endif /* __PCREL__ */
  #endif /* FFI_EXEC_STATIC_TRAMP */