mirror of
https://github.com/partic2/libffi
synced 2026-11-09 17:47:19 +00:00
Alan Modra
164283f4ac
fpr area and the parameter save area, necessary when the backend doesn't know if a function argument corresponds to the ellipsis arguments of a variadic function. This patch adds powerpc support for variadic functions, and changes the code to only pass fp in the ABI mandated area. ELFv2 needs this change since the parameter save area may not exist there. This also fixes two faulty tests that used a non-variadic function cast to call a variadic function, and spuriously reasoned that this is somehow necessary for static functions..
146 lines
4.1 KiB
C
146 lines
4.1 KiB
C
/* -----------------------------------------------------------------*-C-*-
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ffitarget.h - Copyright (c) 2012 Anthony Green
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Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc
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Copyright (c) 1996-2003 Red Hat, Inc.
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Target configuration macros for PowerPC.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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``Software''), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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----------------------------------------------------------------------- */
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#ifndef LIBFFI_TARGET_H
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#define LIBFFI_TARGET_H
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#ifndef LIBFFI_H
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#error "Please do not include ffitarget.h directly into your source. Use ffi.h instead."
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#endif
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/* ---- System specific configurations ----------------------------------- */
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#if defined (POWERPC) && defined (__powerpc64__) /* linux64 */
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#ifndef POWERPC64
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#define POWERPC64
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#endif
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#elif defined (POWERPC_DARWIN) && defined (__ppc64__) /* Darwin64 */
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#ifndef POWERPC64
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#define POWERPC64
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#endif
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#ifndef POWERPC_DARWIN64
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#define POWERPC_DARWIN64
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#endif
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#elif defined (POWERPC_AIX) && defined (__64BIT__) /* AIX64 */
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#ifndef POWERPC64
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#define POWERPC64
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#endif
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#endif
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#ifndef LIBFFI_ASM
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typedef unsigned long ffi_arg;
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typedef signed long ffi_sarg;
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typedef enum ffi_abi {
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FFI_FIRST_ABI = 0,
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#ifdef POWERPC
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FFI_SYSV,
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FFI_GCC_SYSV,
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FFI_LINUX64,
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FFI_LINUX,
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FFI_LINUX_SOFT_FLOAT,
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# if defined(POWERPC64)
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FFI_DEFAULT_ABI = FFI_LINUX64,
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# elif defined(__NO_FPRS__)
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FFI_DEFAULT_ABI = FFI_LINUX_SOFT_FLOAT,
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# elif (__LDBL_MANT_DIG__ == 106)
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FFI_DEFAULT_ABI = FFI_LINUX,
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# else
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FFI_DEFAULT_ABI = FFI_GCC_SYSV,
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# endif
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#endif
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#ifdef POWERPC_AIX
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FFI_AIX,
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FFI_DARWIN,
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FFI_DEFAULT_ABI = FFI_AIX,
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#endif
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#ifdef POWERPC_DARWIN
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FFI_AIX,
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FFI_DARWIN,
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FFI_DEFAULT_ABI = FFI_DARWIN,
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#endif
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#ifdef POWERPC_FREEBSD
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FFI_SYSV,
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FFI_GCC_SYSV,
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FFI_LINUX64,
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FFI_LINUX,
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FFI_LINUX_SOFT_FLOAT,
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FFI_DEFAULT_ABI = FFI_SYSV,
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#endif
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FFI_LAST_ABI
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} ffi_abi;
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#endif
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/* ---- Definitions for closures ----------------------------------------- */
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#define FFI_CLOSURES 1
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#define FFI_NATIVE_RAW_API 0
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#if defined (POWERPC) || defined (POWERPC_FREEBSD)
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# define FFI_TARGET_SPECIFIC_VARIADIC 1
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# define FFI_EXTRA_CIF_FIELDS unsigned nfixedargs
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#endif
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/* For additional types like the below, take care about the order in
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ppc_closures.S. They must follow after the FFI_TYPE_LAST. */
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/* Needed for soft-float long-double-128 support. */
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#define FFI_TYPE_UINT128 (FFI_TYPE_LAST + 1)
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/* Needed for FFI_SYSV small structure returns.
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We use two flag bits, (FLAG_SYSV_SMST_R3, FLAG_SYSV_SMST_R4) which are
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defined in ffi.c, to determine the exact return type and its size. */
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#define FFI_SYSV_TYPE_SMALL_STRUCT (FFI_TYPE_LAST + 2)
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#if defined(POWERPC64) || defined(POWERPC_AIX)
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# if defined(POWERPC_DARWIN64)
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# define FFI_TRAMPOLINE_SIZE 48
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# else
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# define FFI_TRAMPOLINE_SIZE 24
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# endif
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#else /* POWERPC || POWERPC_AIX */
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# define FFI_TRAMPOLINE_SIZE 40
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#endif
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#ifndef LIBFFI_ASM
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#if defined(POWERPC_DARWIN) || defined(POWERPC_AIX)
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struct ffi_aix_trampoline_struct {
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void * code_pointer; /* Pointer to ffi_closure_ASM */
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void * toc; /* TOC */
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void * static_chain; /* Pointer to closure */
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};
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#endif
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#endif
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#endif
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