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-rw-r--r--libffi/src/m68k/ffi.c176
-rw-r--r--libffi/src/m68k/ffitarget.h47
-rw-r--r--libffi/src/m68k/sysv.S97
3 files changed, 320 insertions, 0 deletions
diff --git a/libffi/src/m68k/ffi.c b/libffi/src/m68k/ffi.c
new file mode 100644
index 0000000..55f3a98
--- /dev/null
+++ b/libffi/src/m68k/ffi.c
@@ -0,0 +1,176 @@
+/* -----------------------------------------------------------------------
+ ffi.c
+
+ m68k Foreign Function Interface
+ ----------------------------------------------------------------------- */
+
+#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. */
+
+static void *
+ffi_prep_args (void *stack, extended_cif *ecif)
+{
+ unsigned int i;
+ void **p_argv;
+ char *argp;
+ ffi_type **p_arg;
+ void *struct_value_ptr;
+
+ argp = stack;
+
+ if (ecif->cif->rtype->type == FFI_TYPE_STRUCT
+ && ecif->cif->rtype->size > 8)
+ struct_value_ptr = ecif->rvalue;
+ else
+ struct_value_ptr = NULL;
+
+ p_argv = ecif->avalue;
+
+ for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types;
+ i != 0;
+ i--, p_arg++)
+ {
+ size_t z;
+
+ /* Align if necessary. */
+ if (((*p_arg)->alignment - 1) & (unsigned) argp)
+ argp = (char *) ALIGN (argp, (*p_arg)->alignment);
+
+ z = (*p_arg)->size;
+ if (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;
+
+ case FFI_TYPE_STRUCT:
+ memcpy (argp + sizeof (int) - z, *p_argv, z);
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ }
+ z = sizeof (int);
+ }
+ else
+ memcpy (argp, *p_argv, z);
+ p_argv++;
+ argp += z;
+ }
+
+ return struct_value_ptr;
+}
+
+#define CIF_FLAGS_INT 1
+#define CIF_FLAGS_DINT 2
+#define CIF_FLAGS_FLOAT 4
+#define CIF_FLAGS_DOUBLE 8
+#define CIF_FLAGS_LDOUBLE 16
+#define CIF_FLAGS_POINTER 32
+#define CIF_FLAGS_STRUCT 64
+
+/* Perform machine dependent cif processing */
+ffi_status
+ffi_prep_cif_machdep (ffi_cif *cif)
+{
+ /* Set the return type flag */
+ switch (cif->rtype->type)
+ {
+ case FFI_TYPE_VOID:
+ cif->flags = 0;
+ break;
+
+ case FFI_TYPE_STRUCT:
+ if (cif->rtype->size > 4 && cif->rtype->size <= 8)
+ cif->flags = CIF_FLAGS_DINT;
+ else if (cif->rtype->size <= 4)
+ cif->flags = CIF_FLAGS_STRUCT;
+ else
+ cif->flags = 0;
+ break;
+
+ case FFI_TYPE_FLOAT:
+ cif->flags = CIF_FLAGS_FLOAT;
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ cif->flags = CIF_FLAGS_DOUBLE;
+ break;
+
+ case FFI_TYPE_LONGDOUBLE:
+ cif->flags = CIF_FLAGS_LDOUBLE;
+ break;
+
+ case FFI_TYPE_POINTER:
+ cif->flags = CIF_FLAGS_POINTER;
+ break;
+
+ case FFI_TYPE_SINT64:
+ case FFI_TYPE_UINT64:
+ cif->flags = CIF_FLAGS_DINT;
+ break;
+
+ default:
+ cif->flags = CIF_FLAGS_INT;
+ break;
+ }
+
+ return FFI_OK;
+}
+
+extern void ffi_call_SYSV (void *(*) (void *, extended_cif *),
+ extended_cif *,
+ unsigned, unsigned, unsigned,
+ void *, void (*fn) ());
+
+void
+ffi_call (ffi_cif *cif, void (*fn) (), 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
+ && cif->rtype->size > 8)
+ ecif.rvalue = alloca (cif->rtype->size);
+ else
+ ecif.rvalue = rvalue;
+
+
+ switch (cif->abi)
+ {
+ case FFI_SYSV:
+ ffi_call_SYSV (ffi_prep_args, &ecif, cif->bytes,
+ cif->flags, cif->rtype->size * 8,
+ ecif.rvalue, fn);
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ break;
+ }
+}
diff --git a/libffi/src/m68k/ffitarget.h b/libffi/src/m68k/ffitarget.h
new file mode 100644
index 0000000..aca7fac
--- /dev/null
+++ b/libffi/src/m68k/ffitarget.h
@@ -0,0 +1,47 @@
+/* -----------------------------------------------------------------*-C-*-
+ ffitarget.h - Copyright (c) 1996-2003 Red Hat, Inc.
+ Target configuration macros for Motorola 68K.
+
+ 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 CYGNUS SOLUTIONS 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_ASM
+typedef unsigned long ffi_arg;
+typedef signed long ffi_sarg;
+
+typedef enum ffi_abi {
+ FFI_FIRST_ABI = 0,
+ FFI_SYSV,
+ FFI_DEFAULT_ABI = FFI_SYSV,
+ FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
+} ffi_abi;
+#endif
+
+/* ---- Definitions for closures ----------------------------------------- */
+
+#define FFI_CLOSURES 0
+#define FFI_NATIVE_RAW_API 0
+
+#endif
+
diff --git a/libffi/src/m68k/sysv.S b/libffi/src/m68k/sysv.S
new file mode 100644
index 0000000..d019a37
--- /dev/null
+++ b/libffi/src/m68k/sysv.S
@@ -0,0 +1,97 @@
+/* -----------------------------------------------------------------------
+ sysv.S
+
+ m68k Foreign Function Interface
+ ----------------------------------------------------------------------- */
+
+#define LIBFFI_ASM
+#include <fficonfig.h>
+#include <ffi.h>
+
+ .text
+
+ .globl ffi_call_SYSV
+ .type ffi_call_SYSV,@function
+
+ffi_call_SYSV:
+ link %fp,#0
+ move.l %d2,-(%sp)
+
+ | Make room for all of the new args.
+ sub.l 16(%fp),%sp
+
+ | Call ffi_prep_args
+ move.l 12(%fp),-(%sp)
+ pea 4(%sp)
+ move.l 8(%fp),%a0
+ jsr (%a0)
+ addq.l #8,%sp
+
+ | Pass pointer to struct value, if any
+ move.l %a0,%a1
+
+ | Call the function
+ move.l 32(%fp),%a0
+ jsr (%a0)
+
+ | Remove the space we pushed for the args
+ add.l 16(%fp),%sp
+
+ | Load the pointer to storage for the return value
+ move.l 28(%fp),%a1
+
+ | Load the return type code
+ move.l 20(%fp),%d2
+
+ | If the return value pointer is NULL, assume no return value.
+ tst.l %a1
+ jbeq noretval
+
+ btst #0,%d2
+ jbeq retlongint
+ move.l %d0,(%a1)
+ jbra epilogue
+
+retlongint:
+ btst #1,%d2
+ jbeq retfloat
+ move.l %d0,(%a1)
+ move.l %d1,4(%a1)
+ jbra epilogue
+
+retfloat:
+ btst #2,%d2
+ jbeq retdouble
+ fmove.s %fp0,(%a1)
+ jbra epilogue
+
+retdouble:
+ btst #3,%d2
+ jbeq retlongdouble
+ fmove.d %fp0,(%a1)
+ jbra epilogue
+
+retlongdouble:
+ btst #4,%d2
+ jbeq retpointer
+ fmove.x %fp0,(%a1)
+ jbra epilogue
+
+retpointer:
+ btst #5,%d2
+ jbeq retstruct
+ move.l %a0,(%a1)
+ jbra epilogue
+
+retstruct:
+ btst #6,%d2
+ jbeq noretval
+ move.l 24(%fp),%d2
+ bfins %d0,(%a1){#0,%d2}
+
+noretval:
+epilogue:
+ move.l (%sp)+,%d2
+ unlk %a6
+ rts
+ .size ffi_call_SYSV,.-ffi_call_SYSV
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 19:55:26 +0000