c3-lang/libffi/src/pa/ffitarget.h

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• Hash : 8eb2d2b0
  Author :
  Date : 2020-02-24T10:29:20
  

  Revamp PA_LINUX and PA_HPUX target closures to use function descriptors. 2020-02-23 John David Anglin <danglin@gcc.gnu.org> * include/ffi.h.in (FFI_CLOSURE_PTR, FFI_RESTORE_PTR): Define. * src/closures.c (ffi_closure_alloc): Convert closure pointer return by malloc to function pointer. (ffi_closure_free): Convert function pointer back to malloc pointer. * src/pa/ffi.c (ffi_closure_inner_pa32): Use union to double word align return address on stack. Adjust statements referencing return address. Convert closure argument from function pointer to standard closure pointer. (ffi_prep_closure_loc): Likewise convert closure argument back to closure pointer. Remove assembler trampolines. Setup simulated function descriptor as on ia64. src/pa/ffitarget.h (FFI_TRAMPOLINE_SIZE): Reduce to 12. src/pa/hpux32.S (ffi_closure_pa32): Retrieve closure pointer and real gp from fake gp value in register %r19. src/pa/linux.S (ffi_closure_pa32): Likewise.

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• src/pa/ffitarget.h

• /* -----------------------------------------------------------------*-C-*-
     ffitarget.h - Copyright (c) 2012  Anthony Green
                   Copyright (c) 1996-2003  Red Hat, Inc.
     Target configuration macros for hppa.
  
     Permission is hereby granted, free of charge, to any person obtaining
     a copy of this software and associated documentation files (the
     ``Software''), to deal in the Software without restriction, including
     without limitation the rights to use, copy, modify, merge, publish,
     distribute, sublicense, and/or sell copies of the Software, and to
     permit persons to whom the Software is furnished to do so, subject to
     the following conditions:
  
     The above copyright notice and this permission notice shall be included
     in all copies or substantial portions of the Software.
  
     THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     DEALINGS IN THE SOFTWARE.
  
     ----------------------------------------------------------------------- */
  
  #ifndef LIBFFI_TARGET_H
  #define LIBFFI_TARGET_H
  
  #ifndef LIBFFI_H
  #error "Please do not include ffitarget.h directly into your source.  Use ffi.h instead."
  #endif
  
  /* ---- System specific configurations ----------------------------------- */
  
  #ifndef LIBFFI_ASM
  typedef unsigned long          ffi_arg;
  typedef signed long            ffi_sarg;
  
  typedef enum ffi_abi {
    FFI_FIRST_ABI = 0,
  
  #ifdef PA_LINUX
    FFI_PA32,
    FFI_LAST_ABI,
    FFI_DEFAULT_ABI = FFI_PA32
  #endif
  
  #ifdef PA_HPUX
    FFI_PA32,
    FFI_LAST_ABI,
    FFI_DEFAULT_ABI = FFI_PA32
  #endif
  
  #ifdef PA64_HPUX
  #error "PA64_HPUX FFI is not yet implemented"
    FFI_PA64,
    FFI_LAST_ABI,
    FFI_DEFAULT_ABI = FFI_PA64
  #endif
  } ffi_abi;
  #endif
  
  #define FFI_TARGET_SPECIFIC_STACK_SPACE_ALLOCATION
  
  /* ---- Definitions for closures ----------------------------------------- */
  
  #define FFI_CLOSURES 1
  #define FFI_NATIVE_RAW_API 0
  #define FFI_TRAMPOLINE_SIZE 12
  
  #define FFI_TYPE_SMALL_STRUCT2 -1
  #define FFI_TYPE_SMALL_STRUCT3 -2
  #define FFI_TYPE_SMALL_STRUCT4 -3
  #define FFI_TYPE_SMALL_STRUCT5 -4
  #define FFI_TYPE_SMALL_STRUCT6 -5
  #define FFI_TYPE_SMALL_STRUCT7 -6
  #define FFI_TYPE_SMALL_STRUCT8 -7
  #endif
  

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