summaryrefslogtreecommitdiff
path: root/Modules/_ctypes/libffi/src/moxie/ffi.c
diff options
context:
space:
mode:
Diffstat (limited to 'Modules/_ctypes/libffi/src/moxie/ffi.c')
-rw-r--r--Modules/_ctypes/libffi/src/moxie/ffi.c272
1 files changed, 0 insertions, 272 deletions
diff --git a/Modules/_ctypes/libffi/src/moxie/ffi.c b/Modules/_ctypes/libffi/src/moxie/ffi.c
deleted file mode 100644
index 540a042996..0000000000
--- a/Modules/_ctypes/libffi/src/moxie/ffi.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/* -----------------------------------------------------------------------
- ffi.c - Copyright (C) 2012, 2013 Anthony Green
-
- Moxie 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 <ffi.h>
-#include <ffi_common.h>
-
-#include <stdlib.h>
-
-/* ffi_prep_args is called by the assembly routine once stack space
- has been allocated for the function's arguments */
-
-void *ffi_prep_args(char *stack, extended_cif *ecif)
-{
- register unsigned int i;
- register void **p_argv;
- register char *argp;
- register ffi_type **p_arg;
- register int count = 0;
-
- p_argv = ecif->avalue;
- argp = stack;
-
- if (ecif->cif->rtype->type == FFI_TYPE_STRUCT)
- {
- *(void **) argp = ecif->rvalue;
- argp += 4;
- }
-
- for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types;
- (i != 0);
- i--, p_arg++)
- {
- size_t z;
-
- z = (*p_arg)->size;
-
- if ((*p_arg)->type == FFI_TYPE_STRUCT)
- {
- z = sizeof(void*);
- *(void **) argp = *p_argv;
- }
- else if (z < sizeof(int))
- {
- z = sizeof(int);
- switch ((*p_arg)->type)
- {
- case FFI_TYPE_SINT8:
- *(signed int *) argp = (signed int)*(SINT8 *)(* p_argv);
- break;
-
- case FFI_TYPE_UINT8:
- *(unsigned int *) argp = (unsigned int)*(UINT8 *)(* p_argv);
- break;
-
- case FFI_TYPE_SINT16:
- *(signed int *) argp = (signed int)*(SINT16 *)(* p_argv);
- break;
-
- case FFI_TYPE_UINT16:
- *(unsigned int *) argp = (unsigned int)*(UINT16 *)(* p_argv);
- break;
-
- default:
- FFI_ASSERT(0);
- }
- }
- else if (z == sizeof(int))
- {
- *(unsigned int *) argp = (unsigned int)*(UINT32 *)(* p_argv);
- }
- else
- {
- memcpy(argp, *p_argv, z);
- }
- p_argv++;
- argp += z;
- count += z;
- }
-
- return (stack + ((count > 24) ? 24 : ALIGN_DOWN(count, 8)));
-}
-
-/* Perform machine dependent cif processing */
-ffi_status ffi_prep_cif_machdep(ffi_cif *cif)
-{
- if (cif->rtype->type == FFI_TYPE_STRUCT)
- cif->flags = -1;
- else
- cif->flags = cif->rtype->size;
-
- cif->bytes = ALIGN (cif->bytes, 8);
-
- return FFI_OK;
-}
-
-extern void ffi_call_EABI(void *(*)(char *, extended_cif *),
- extended_cif *,
- unsigned, unsigned,
- unsigned *,
- void (*fn)(void));
-
-void ffi_call(ffi_cif *cif,
- void (*fn)(void),
- void *rvalue,
- void **avalue)
-{
- extended_cif ecif;
-
- ecif.cif = cif;
- ecif.avalue = avalue;
-
- /* If the return value is a struct and we don't have a return */
- /* value address then we need to make one */
-
- if ((rvalue == NULL) &&
- (cif->rtype->type == FFI_TYPE_STRUCT))
- {
- ecif.rvalue = alloca(cif->rtype->size);
- }
- else
- ecif.rvalue = rvalue;
-
- switch (cif->abi)
- {
- case FFI_EABI:
- ffi_call_EABI(ffi_prep_args, &ecif, cif->bytes,
- cif->flags, ecif.rvalue, fn);
- break;
- default:
- FFI_ASSERT(0);
- break;
- }
-}
-
-void ffi_closure_eabi (unsigned arg1, unsigned arg2, unsigned arg3,
- unsigned arg4, unsigned arg5, unsigned arg6)
-{
- /* This function is called by a trampoline. The trampoline stows a
- pointer to the ffi_closure object in $r7. We must save this
- pointer in a place that will persist while we do our work. */
- register ffi_closure *creg __asm__ ("$r12");
- ffi_closure *closure = creg;
-
- /* Arguments that don't fit in registers are found on the stack
- at a fixed offset above the current frame pointer. */
- register char *frame_pointer __asm__ ("$fp");
-
- /* Pointer to a struct return value. */
- void *struct_rvalue = (void *) arg1;
-
- /* 6 words reserved for register args + 3 words from jsr */
- char *stack_args = frame_pointer + 9*4;
-
- /* Lay the register arguments down in a continuous chunk of memory. */
- unsigned register_args[6] =
- { arg1, arg2, arg3, arg4, arg5, arg6 };
- char *register_args_ptr = (char *) register_args;
-
- ffi_cif *cif = closure->cif;
- ffi_type **arg_types = cif->arg_types;
- void **avalue = alloca (cif->nargs * sizeof(void *));
- char *ptr = (char *) register_args;
- int i;
-
- /* preserve struct type return pointer passing */
- if ((cif->rtype != NULL) && (cif->rtype->type == FFI_TYPE_STRUCT)) {
- ptr += 4;
- register_args_ptr = (char *)&register_args[1];
- }
-
- /* Find the address of each argument. */
- for (i = 0; i < cif->nargs; i++)
- {
- switch (arg_types[i]->type)
- {
- case FFI_TYPE_SINT8:
- case FFI_TYPE_UINT8:
- avalue[i] = ptr + 3;
- break;
- case FFI_TYPE_SINT16:
- case FFI_TYPE_UINT16:
- avalue[i] = ptr + 2;
- break;
- case FFI_TYPE_SINT32:
- case FFI_TYPE_UINT32:
- case FFI_TYPE_FLOAT:
- case FFI_TYPE_POINTER:
- avalue[i] = ptr;
- break;
- case FFI_TYPE_STRUCT:
- avalue[i] = *(void**)ptr;
- break;
- default:
- /* This is an 8-byte value. */
- avalue[i] = ptr;
- ptr += 4;
- break;
- }
- ptr += 4;
-
- /* If we've handled more arguments than fit in registers,
- start looking at the those passed on the stack. */
- if (ptr == &register_args[6])
- ptr = stack_args;
- }
-
- /* Invoke the closure. */
- if (cif->rtype && (cif->rtype->type == FFI_TYPE_STRUCT))
- {
- (closure->fun) (cif, struct_rvalue, avalue, closure->user_data);
- }
- else
- {
- /* Allocate space for the return value and call the function. */
- long long rvalue;
- (closure->fun) (cif, &rvalue, avalue, closure->user_data);
- asm ("mov $r12, %0\n ld.l $r0, ($r12)\n ldo.l $r1, 4($r12)" : : "r" (&rvalue));
- }
-}
-
-ffi_status
-ffi_prep_closure_loc (ffi_closure* closure,
- ffi_cif* cif,
- void (*fun)(ffi_cif*, void*, void**, void*),
- void *user_data,
- void *codeloc)
-{
- unsigned short *tramp = (unsigned short *) &closure->tramp[0];
- unsigned long fn = (long) ffi_closure_eabi;
- unsigned long cls = (long) codeloc;
-
- if (cif->abi != FFI_EABI)
- return FFI_BAD_ABI;
-
- fn = (unsigned long) ffi_closure_eabi;
-
- tramp[0] = 0x01e0; /* ldi.l $r7, .... */
- tramp[1] = cls >> 16;
- tramp[2] = cls & 0xffff;
- tramp[3] = 0x1a00; /* jmpa .... */
- tramp[4] = fn >> 16;
- tramp[5] = fn & 0xffff;
-
- closure->cif = cif;
- closure->fun = fun;
- closure->user_data = user_data;
-
- return FFI_OK;
-}
View Lorry Controller Status