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author | doko <doko@ubuntu.com> | 2017-02-01 13:02:16 +0100 |
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committer | doko <doko@ubuntu.com> | 2017-02-01 13:02:16 +0100 |
commit | 2e835c97b60f5f554ea4742abc1c0f801567f1b9 (patch) | |
tree | e57b9697de6321a39541c2e947940e275ca844d3 /Modules/_ctypes/libffi/src/prep_cif.c | |
parent | ba5a055a00d91a449a23ae14dd468e9b769a6b74 (diff) | |
parent | 75a56cd1847142d9c893b6df5fb674f54b34d9ed (diff) | |
download | cpython-2e835c97b60f5f554ea4742abc1c0f801567f1b9.tar.gz |
Merge 3.6
Diffstat (limited to 'Modules/_ctypes/libffi/src/prep_cif.c')
-rw-r--r-- | Modules/_ctypes/libffi/src/prep_cif.c | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/Modules/_ctypes/libffi/src/prep_cif.c b/Modules/_ctypes/libffi/src/prep_cif.c deleted file mode 100644 index 55ceed8c5e..0000000000 --- a/Modules/_ctypes/libffi/src/prep_cif.c +++ /dev/null @@ -1,245 +0,0 @@ -/* ----------------------------------------------------------------------- - prep_cif.c - Copyright (c) 2011, 2012 Anthony Green - Copyright (c) 1996, 1998, 2007 Red Hat, Inc. - - 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. - ----------------------------------------------------------------------- */ - -#include <ffi.h> -#include <ffi_common.h> -#include <stdlib.h> - -/* Round up to FFI_SIZEOF_ARG. */ - -#define STACK_ARG_SIZE(x) ALIGN(x, FFI_SIZEOF_ARG) - -/* Perform machine independent initialization of aggregate type - specifications. */ - -static ffi_status initialize_aggregate(ffi_type *arg) -{ - ffi_type **ptr; - - if (UNLIKELY(arg == NULL || arg->elements == NULL)) - return FFI_BAD_TYPEDEF; - - arg->size = 0; - arg->alignment = 0; - - ptr = &(arg->elements[0]); - - if (UNLIKELY(ptr == 0)) - return FFI_BAD_TYPEDEF; - - while ((*ptr) != NULL) - { - if (UNLIKELY(((*ptr)->size == 0) - && (initialize_aggregate((*ptr)) != FFI_OK))) - return FFI_BAD_TYPEDEF; - - /* Perform a sanity check on the argument type */ - FFI_ASSERT_VALID_TYPE(*ptr); - - arg->size = ALIGN(arg->size, (*ptr)->alignment); - arg->size += (*ptr)->size; - - arg->alignment = (arg->alignment > (*ptr)->alignment) ? - arg->alignment : (*ptr)->alignment; - - ptr++; - } - - /* Structure size includes tail padding. This is important for - structures that fit in one register on ABIs like the PowerPC64 - Linux ABI that right justify small structs in a register. - It's also needed for nested structure layout, for example - struct A { long a; char b; }; struct B { struct A x; char y; }; - should find y at an offset of 2*sizeof(long) and result in a - total size of 3*sizeof(long). */ - arg->size = ALIGN (arg->size, arg->alignment); - - /* On some targets, the ABI defines that structures have an additional - alignment beyond the "natural" one based on their elements. */ -#ifdef FFI_AGGREGATE_ALIGNMENT - if (FFI_AGGREGATE_ALIGNMENT > arg->alignment) - arg->alignment = FFI_AGGREGATE_ALIGNMENT; -#endif - - if (arg->size == 0) - return FFI_BAD_TYPEDEF; - else - return FFI_OK; -} - -#ifndef __CRIS__ -/* The CRIS ABI specifies structure elements to have byte - alignment only, so it completely overrides this functions, - which assumes "natural" alignment and padding. */ - -/* Perform machine independent ffi_cif preparation, then call - machine dependent routine. */ - -/* For non variadic functions isvariadic should be 0 and - nfixedargs==ntotalargs. - - For variadic calls, isvariadic should be 1 and nfixedargs - and ntotalargs set as appropriate. nfixedargs must always be >=1 */ - - -ffi_status FFI_HIDDEN ffi_prep_cif_core(ffi_cif *cif, ffi_abi abi, - unsigned int isvariadic, - unsigned int nfixedargs, - unsigned int ntotalargs, - ffi_type *rtype, ffi_type **atypes) -{ - unsigned bytes = 0; - unsigned int i; - ffi_type **ptr; - - FFI_ASSERT(cif != NULL); - FFI_ASSERT((!isvariadic) || (nfixedargs >= 1)); - FFI_ASSERT(nfixedargs <= ntotalargs); - - if (! (abi > FFI_FIRST_ABI && abi < FFI_LAST_ABI)) - return FFI_BAD_ABI; - - cif->abi = abi; - cif->arg_types = atypes; - cif->nargs = ntotalargs; - cif->rtype = rtype; - - cif->flags = 0; - -#if HAVE_LONG_DOUBLE_VARIANT - ffi_prep_types (abi); -#endif - - /* Initialize the return type if necessary */ - if ((cif->rtype->size == 0) && (initialize_aggregate(cif->rtype) != FFI_OK)) - return FFI_BAD_TYPEDEF; - - /* Perform a sanity check on the return type */ - FFI_ASSERT_VALID_TYPE(cif->rtype); - - /* x86, x86-64 and s390 stack space allocation is handled in prep_machdep. */ -#if !defined M68K && !defined X86_ANY && !defined S390 && !defined PA - /* Make space for the return structure pointer */ - if (cif->rtype->type == FFI_TYPE_STRUCT -#ifdef SPARC - && (cif->abi != FFI_V9 || cif->rtype->size > 32) -#endif -#ifdef TILE - && (cif->rtype->size > 10 * FFI_SIZEOF_ARG) -#endif -#ifdef XTENSA - && (cif->rtype->size > 16) -#endif -#ifdef NIOS2 - && (cif->rtype->size > 8) -#endif - ) - bytes = STACK_ARG_SIZE(sizeof(void*)); -#endif - - for (ptr = cif->arg_types, i = cif->nargs; i > 0; i--, ptr++) - { - - /* Initialize any uninitialized aggregate type definitions */ - if (((*ptr)->size == 0) && (initialize_aggregate((*ptr)) != FFI_OK)) - return FFI_BAD_TYPEDEF; - - /* Perform a sanity check on the argument type, do this - check after the initialization. */ - FFI_ASSERT_VALID_TYPE(*ptr); - -#if !defined X86_ANY && !defined S390 && !defined PA -#ifdef SPARC - if (((*ptr)->type == FFI_TYPE_STRUCT - && ((*ptr)->size > 16 || cif->abi != FFI_V9)) - || ((*ptr)->type == FFI_TYPE_LONGDOUBLE - && cif->abi != FFI_V9)) - bytes += sizeof(void*); - else -#endif - { - /* Add any padding if necessary */ - if (((*ptr)->alignment - 1) & bytes) - bytes = (unsigned)ALIGN(bytes, (*ptr)->alignment); - -#ifdef TILE - if (bytes < 10 * FFI_SIZEOF_ARG && - bytes + STACK_ARG_SIZE((*ptr)->size) > 10 * FFI_SIZEOF_ARG) - { - /* An argument is never split between the 10 parameter - registers and the stack. */ - bytes = 10 * FFI_SIZEOF_ARG; - } -#endif -#ifdef XTENSA - if (bytes <= 6*4 && bytes + STACK_ARG_SIZE((*ptr)->size) > 6*4) - bytes = 6*4; -#endif - - bytes += STACK_ARG_SIZE((*ptr)->size); - } -#endif - } - - cif->bytes = bytes; - - /* Perform machine dependent cif processing */ -#ifdef FFI_TARGET_SPECIFIC_VARIADIC - if (isvariadic) - return ffi_prep_cif_machdep_var(cif, nfixedargs, ntotalargs); -#endif - - return ffi_prep_cif_machdep(cif); -} -#endif /* not __CRIS__ */ - -ffi_status ffi_prep_cif(ffi_cif *cif, ffi_abi abi, unsigned int nargs, - ffi_type *rtype, ffi_type **atypes) -{ - return ffi_prep_cif_core(cif, abi, 0, nargs, nargs, rtype, atypes); -} - -ffi_status ffi_prep_cif_var(ffi_cif *cif, - ffi_abi abi, - unsigned int nfixedargs, - unsigned int ntotalargs, - ffi_type *rtype, - ffi_type **atypes) -{ - return ffi_prep_cif_core(cif, abi, 1, nfixedargs, ntotalargs, rtype, atypes); -} - -#if FFI_CLOSURES - -ffi_status -ffi_prep_closure (ffi_closure* closure, - ffi_cif* cif, - void (*fun)(ffi_cif*,void*,void**,void*), - void *user_data) -{ - return ffi_prep_closure_loc (closure, cif, fun, user_data, closure); -} - -#endif |