From 5d4c6d95015015bdc10eba4d6687018d2cc172d3 Mon Sep 17 00:00:00 2001 From: Zachary Ware Date: Sat, 17 Sep 2016 01:25:24 -0500 Subject: Closes #27979: Remove bundled copy of libffi An installed copy of libffi is now required for building _ctypes on any platform but OSX and Windows. --- Modules/_ctypes/libffi/src/xtensa/ffi.c | 298 -------------------------------- 1 file changed, 298 deletions(-) delete mode 100644 Modules/_ctypes/libffi/src/xtensa/ffi.c (limited to 'Modules/_ctypes/libffi/src/xtensa/ffi.c') diff --git a/Modules/_ctypes/libffi/src/xtensa/ffi.c b/Modules/_ctypes/libffi/src/xtensa/ffi.c deleted file mode 100644 index fd94dafbe3..0000000000 --- a/Modules/_ctypes/libffi/src/xtensa/ffi.c +++ /dev/null @@ -1,298 +0,0 @@ -/* ----------------------------------------------------------------------- - ffi.c - Copyright (c) 2013 Tensilica, Inc. - - XTENSA Foreign Function Interface - - 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 -#include - -/* - |----------------------------------------| - | | - on entry to ffi_call ----> |----------------------------------------| - | caller stack frame for registers a0-a3 | - |----------------------------------------| - | | - | additional arguments | - entry of the function ---> |----------------------------------------| - | copy of function arguments a2-a7 | - | - - - - - - - - - - - - - | - | | - - The area below the entry line becomes the new stack frame for the function. - -*/ - - -#define FFI_TYPE_STRUCT_REGS FFI_TYPE_LAST - - -extern void ffi_call_SYSV(void *rvalue, unsigned rsize, unsigned flags, - void(*fn)(void), unsigned nbytes, extended_cif*); -extern void ffi_closure_SYSV(void) FFI_HIDDEN; - -ffi_status ffi_prep_cif_machdep(ffi_cif *cif) -{ - switch(cif->rtype->type) { - case FFI_TYPE_SINT8: - case FFI_TYPE_UINT8: - case FFI_TYPE_SINT16: - case FFI_TYPE_UINT16: - cif->flags = cif->rtype->type; - break; - case FFI_TYPE_VOID: - case FFI_TYPE_FLOAT: - cif->flags = FFI_TYPE_UINT32; - break; - case FFI_TYPE_DOUBLE: - case FFI_TYPE_UINT64: - case FFI_TYPE_SINT64: - cif->flags = FFI_TYPE_UINT64; // cif->rtype->type; - break; - case FFI_TYPE_STRUCT: - cif->flags = FFI_TYPE_STRUCT; //_REGS; - /* Up to 16 bytes are returned in registers */ - if (cif->rtype->size > 4 * 4) { - /* returned structure is referenced by a register; use 8 bytes - (including 4 bytes for potential additional alignment) */ - cif->flags = FFI_TYPE_STRUCT; - cif->bytes += 8; - } - break; - - default: - cif->flags = FFI_TYPE_UINT32; - break; - } - - /* Round the stack up to a full 4 register frame, just in case - (we use this size in movsp). This way, it's also a multiple of - 8 bytes for 64-bit arguments. */ - cif->bytes = ALIGN(cif->bytes, 16); - - return FFI_OK; -} - -void ffi_prep_args(extended_cif *ecif, unsigned char* stack) -{ - unsigned int i; - unsigned long *addr; - ffi_type **ptr; - - union { - void **v; - char **c; - signed char **sc; - unsigned char **uc; - signed short **ss; - unsigned short **us; - unsigned int **i; - long long **ll; - float **f; - double **d; - } p_argv; - - /* Verify that everything is aligned up properly */ - FFI_ASSERT (((unsigned long) stack & 0x7) == 0); - - p_argv.v = ecif->avalue; - addr = (unsigned long*)stack; - - /* structures with a size greater than 16 bytes are passed in memory */ - if (ecif->cif->rtype->type == FFI_TYPE_STRUCT && ecif->cif->rtype->size > 16) - { - *addr++ = (unsigned long)ecif->rvalue; - } - - for (i = ecif->cif->nargs, ptr = ecif->cif->arg_types; - i > 0; - i--, ptr++, p_argv.v++) - { - switch ((*ptr)->type) - { - case FFI_TYPE_SINT8: - *addr++ = **p_argv.sc; - break; - case FFI_TYPE_UINT8: - *addr++ = **p_argv.uc; - break; - case FFI_TYPE_SINT16: - *addr++ = **p_argv.ss; - break; - case FFI_TYPE_UINT16: - *addr++ = **p_argv.us; - break; - case FFI_TYPE_FLOAT: - case FFI_TYPE_INT: - case FFI_TYPE_UINT32: - case FFI_TYPE_SINT32: - case FFI_TYPE_POINTER: - *addr++ = **p_argv.i; - break; - case FFI_TYPE_DOUBLE: - case FFI_TYPE_UINT64: - case FFI_TYPE_SINT64: - if (((unsigned long)addr & 4) != 0) - addr++; - *(unsigned long long*)addr = **p_argv.ll; - addr += sizeof(unsigned long long) / sizeof (addr); - break; - - case FFI_TYPE_STRUCT: - { - unsigned long offs; - unsigned long size; - - if (((unsigned long)addr & 4) != 0 && (*ptr)->alignment > 4) - addr++; - - offs = (unsigned long) addr - (unsigned long) stack; - size = (*ptr)->size; - - /* Entire structure must fit the argument registers or referenced */ - if (offs < FFI_REGISTER_NARGS * 4 - && offs + size > FFI_REGISTER_NARGS * 4) - addr = (unsigned long*) (stack + FFI_REGISTER_NARGS * 4); - - memcpy((char*) addr, *p_argv.c, size); - addr += (size + 3) / 4; - break; - } - - default: - FFI_ASSERT(0); - } - } -} - - -void ffi_call(ffi_cif* cif, void(*fn)(void), void *rvalue, void **avalue) -{ - extended_cif ecif; - unsigned long rsize = cif->rtype->size; - int flags = cif->flags; - void *alloc = NULL; - - ecif.cif = cif; - ecif.avalue = avalue; - - /* Note that for structures that are returned in registers (size <= 16 bytes) - we allocate a temporary buffer and use memcpy to copy it to the final - destination. The reason is that the target address might be misaligned or - the length not a multiple of 4 bytes. Handling all those cases would be - very complex. */ - - if (flags == FFI_TYPE_STRUCT && (rsize <= 16 || rvalue == NULL)) - { - alloc = alloca(ALIGN(rsize, 4)); - ecif.rvalue = alloc; - } - else - { - ecif.rvalue = rvalue; - } - - if (cif->abi != FFI_SYSV) - FFI_ASSERT(0); - - ffi_call_SYSV (ecif.rvalue, rsize, cif->flags, fn, cif->bytes, &ecif); - - if (alloc != NULL && rvalue != NULL) - memcpy(rvalue, alloc, rsize); -} - -extern void ffi_trampoline(); -extern void ffi_cacheflush(void* start, void* end); - -ffi_status -ffi_prep_closure_loc (ffi_closure* closure, - ffi_cif* cif, - void (*fun)(ffi_cif*, void*, void**, void*), - void *user_data, - void *codeloc) -{ - /* copye trampoline to stack and patch 'ffi_closure_SYSV' pointer */ - memcpy(closure->tramp, ffi_trampoline, FFI_TRAMPOLINE_SIZE); - *(unsigned int*)(&closure->tramp[8]) = (unsigned int)ffi_closure_SYSV; - - // Do we have this function? - // __builtin___clear_cache(closer->tramp, closer->tramp + FFI_TRAMPOLINE_SIZE) - ffi_cacheflush(closure->tramp, closure->tramp + FFI_TRAMPOLINE_SIZE); - - closure->cif = cif; - closure->fun = fun; - closure->user_data = user_data; - return FFI_OK; -} - - -long FFI_HIDDEN -ffi_closure_SYSV_inner(ffi_closure *closure, void **values, void *rvalue) -{ - ffi_cif *cif; - ffi_type **arg_types; - void **avalue; - int i, areg; - - cif = closure->cif; - if (cif->abi != FFI_SYSV) - return FFI_BAD_ABI; - - areg = 0; - - int rtype = cif->rtype->type; - if (rtype == FFI_TYPE_STRUCT && cif->rtype->size > 4 * 4) - { - rvalue = *values; - areg++; - } - - cif = closure->cif; - arg_types = cif->arg_types; - avalue = alloca(cif->nargs * sizeof(void *)); - - for (i = 0; i < cif->nargs; i++) - { - if (arg_types[i]->alignment == 8 && (areg & 1) != 0) - areg++; - - // skip the entry 16,a1 framework, add 16 bytes (4 registers) - if (areg == FFI_REGISTER_NARGS) - areg += 4; - - if (arg_types[i]->type == FFI_TYPE_STRUCT) - { - int numregs = ((arg_types[i]->size + 3) & ~3) / 4; - if (areg < FFI_REGISTER_NARGS && areg + numregs > FFI_REGISTER_NARGS) - areg = FFI_REGISTER_NARGS + 4; - } - - avalue[i] = &values[areg]; - areg += (arg_types[i]->size + 3) / 4; - } - - (closure->fun)(cif, rvalue, avalue, closure->user_data); - - return rtype; -} -- cgit v1.2.1