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-rw-r--r--libffi/src/m68k/ffi.c288
-rw-r--r--libffi/src/m68k/ffitarget.h49
-rw-r--r--libffi/src/m68k/sysv.S270
3 files changed, 607 insertions, 0 deletions
diff --git a/libffi/src/m68k/ffi.c b/libffi/src/m68k/ffi.c
new file mode 100644
index 000000000..0d4df1e23
--- /dev/null
+++ b/libffi/src/m68k/ffi.c
@@ -0,0 +1,288 @@
+/* -----------------------------------------------------------------------
+ ffi.c
+
+ m68k Foreign Function Interface
+ ----------------------------------------------------------------------- */
+
+#include <ffi.h>
+#include <ffi_common.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+#ifdef __rtems__
+void rtems_cache_flush_multiple_data_lines( const void *, size_t );
+#else
+#include <sys/syscall.h>
+#include <asm/cachectl.h>
+#endif
+
+void ffi_call_SYSV (extended_cif *,
+ unsigned, unsigned,
+ void *, void (*fn) ());
+void *ffi_prep_args (void *stack, extended_cif *ecif);
+void ffi_closure_SYSV (ffi_closure *);
+void ffi_closure_struct_SYSV (ffi_closure *);
+unsigned int ffi_closure_SYSV_inner (ffi_closure *closure,
+ void *resp, void *args);
+
+/* ffi_prep_args is called by the assembly routine once stack space has
+ been allocated for the function's arguments. */
+
+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->flags)
+ 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;
+
+ 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);
+
+ /* Align if necessary. */
+ if ((sizeof(int) - 1) & z)
+ z = ALIGN(z, sizeof(int));
+ }
+
+ 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_STRUCT1 64
+#define CIF_FLAGS_STRUCT2 128
+
+/* 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:
+ switch (cif->rtype->size)
+ {
+ case 1:
+ cif->flags = CIF_FLAGS_STRUCT1;
+ break;
+ case 2:
+ cif->flags = CIF_FLAGS_STRUCT2;
+ break;
+ case 4:
+ cif->flags = CIF_FLAGS_INT;
+ break;
+ case 8:
+ cif->flags = CIF_FLAGS_DINT;
+ break;
+ default:
+ cif->flags = 0;
+ break;
+ }
+ break;
+
+ case FFI_TYPE_FLOAT:
+ cif->flags = CIF_FLAGS_FLOAT;
+ break;
+
+ case FFI_TYPE_DOUBLE:
+ cif->flags = CIF_FLAGS_DOUBLE;
+ break;
+
+#if (FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE)
+ case FFI_TYPE_LONGDOUBLE:
+ cif->flags = CIF_FLAGS_LDOUBLE;
+ break;
+#endif
+
+ 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;
+}
+
+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 (&ecif, cif->bytes, cif->flags,
+ ecif.rvalue, fn);
+ break;
+
+ default:
+ FFI_ASSERT (0);
+ break;
+ }
+}
+
+static void
+ffi_prep_incoming_args_SYSV (char *stack, void **avalue, ffi_cif *cif)
+{
+ unsigned int i;
+ void **p_argv;
+ char *argp;
+ ffi_type **p_arg;
+
+ argp = stack;
+ p_argv = avalue;
+
+ for (i = cif->nargs, p_arg = cif->arg_types; (i != 0); i--, p_arg++)
+ {
+ size_t z;
+
+ z = (*p_arg)->size;
+ if (z <= 4)
+ {
+ *p_argv = (void *) (argp + 4 - z);
+
+ z = 4;
+ }
+ else
+ {
+ *p_argv = (void *) argp;
+
+ /* Align if necessary */
+ if ((sizeof(int) - 1) & z)
+ z = ALIGN(z, sizeof(int));
+ }
+
+ p_argv++;
+ argp += z;
+ }
+}
+
+unsigned int
+ffi_closure_SYSV_inner (ffi_closure *closure, void *resp, void *args)
+{
+ ffi_cif *cif;
+ void **arg_area;
+
+ cif = closure->cif;
+ arg_area = (void**) alloca (cif->nargs * sizeof (void *));
+
+ ffi_prep_incoming_args_SYSV(args, arg_area, cif);
+
+ (closure->fun) (cif, resp, arg_area, closure->user_data);
+
+ return cif->flags;
+}
+
+ffi_status
+ffi_prep_closure_loc (ffi_closure* closure,
+ ffi_cif* cif,
+ void (*fun)(ffi_cif*,void*,void**,void*),
+ void *user_data,
+ void *codeloc)
+{
+ FFI_ASSERT (cif->abi == FFI_SYSV);
+
+ *(unsigned short *)closure->tramp = 0x207c;
+ *(void **)(closure->tramp + 2) = codeloc;
+ *(unsigned short *)(closure->tramp + 6) = 0x4ef9;
+ if (cif->rtype->type == FFI_TYPE_STRUCT
+ && !cif->flags)
+ *(void **)(closure->tramp + 8) = ffi_closure_struct_SYSV;
+ else
+ *(void **)(closure->tramp + 8) = ffi_closure_SYSV;
+
+#ifdef __rtems__
+ rtems_cache_flush_multiple_data_lines( codeloc, FFI_TRAMPOLINE_SIZE );
+#else
+ syscall(SYS_cacheflush, codeloc, FLUSH_SCOPE_LINE,
+ FLUSH_CACHE_BOTH, FFI_TRAMPOLINE_SIZE);
+#endif
+
+ closure->cif = cif;
+ closure->user_data = user_data;
+ closure->fun = fun;
+
+ return FFI_OK;
+}
+
diff --git a/libffi/src/m68k/ffitarget.h b/libffi/src/m68k/ffitarget.h
new file mode 100644
index 000000000..633717bbf
--- /dev/null
+++ b/libffi/src/m68k/ffitarget.h
@@ -0,0 +1,49 @@
+/* -----------------------------------------------------------------*-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 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.
+
+ ----------------------------------------------------------------------- */
+
+#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 1
+#define FFI_TRAMPOLINE_SIZE 16
+#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 000000000..c782f5192
--- /dev/null
+++ b/libffi/src/m68k/sysv.S
@@ -0,0 +1,270 @@
+/* -----------------------------------------------------------------------
+
+ sysv.S - Copyright (c) 1998 Andreas Schwab
+ Copyright (c) 2008 Red Hat, Inc.
+
+ m68k 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.
+ ----------------------------------------------------------------------- */
+
+#define LIBFFI_ASM
+#include <fficonfig.h>
+#include <ffi.h>
+
+#ifdef HAVE_AS_CFI_PSEUDO_OP
+#define CFI_STARTPROC() .cfi_startproc
+#define CFI_OFFSET(reg,off) .cfi_offset reg,off
+#define CFI_DEF_CFA(reg,off) .cfi_def_cfa reg,off
+#define CFI_ENDPROC() .cfi_endproc
+#else
+#define CFI_STARTPROC()
+#define CFI_OFFSET(reg,off)
+#define CFI_DEF_CFA(reg,off)
+#define CFI_ENDPROC()
+#endif
+
+ .text
+
+ .globl ffi_call_SYSV
+ .type ffi_call_SYSV,@function
+ .align 4
+
+ffi_call_SYSV:
+ CFI_STARTPROC()
+ link %fp,#0
+ CFI_OFFSET(14,-8)
+ CFI_DEF_CFA(14,8)
+ move.l %d2,-(%sp)
+ CFI_OFFSET(2,-12)
+
+ | Make room for all of the new args.
+ sub.l 12(%fp),%sp
+
+ | Call ffi_prep_args
+ move.l 8(%fp),-(%sp)
+ pea 4(%sp)
+#if !defined __PIC__
+ jsr ffi_prep_args
+#else
+ bsr.l ffi_prep_args@PLTPC
+#endif
+ addq.l #8,%sp
+
+ | Pass pointer to struct value, if any
+ move.l %a0,%a1
+
+ | Call the function
+ move.l 24(%fp),%a0
+ jsr (%a0)
+
+ | Remove the space we pushed for the args
+ add.l 12(%fp),%sp
+
+ | Load the pointer to storage for the return value
+ move.l 20(%fp),%a1
+
+ | Load the return type code
+ move.l 16(%fp),%d2
+
+ | If the return value pointer is NULL, assume no return value.
+ | NOTE: On the mc68000, tst on an address register is not supported.
+#if defined(__mc68000__) && !defined(__mcoldfire__)
+ cmp.w #0, %a1
+#else
+ tst.l %a1
+#endif
+ 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
+#if defined(__MC68881__)
+ fmove.s %fp0,(%a1)
+#else
+ move.l %d0,(%a1)
+#endif
+ jbra epilogue
+
+retdouble:
+ btst #3,%d2
+ jbeq retlongdouble
+#if defined(__MC68881__)
+ fmove.d %fp0,(%a1)
+#else
+ move.l %d0,(%a1)+
+ move.l %d1,(%a1)
+#endif
+ jbra epilogue
+
+retlongdouble:
+ btst #4,%d2
+ jbeq retpointer
+#if defined(__MC68881__)
+ fmove.x %fp0,(%a1)
+#else
+ move.l %d0,(%a1)+
+ move.l %d1,(%a1)+
+ move.l %d2,(%a1)
+#endif
+ jbra epilogue
+
+retpointer:
+ btst #5,%d2
+ jbeq retstruct1
+ move.l %a0,(%a1)
+ jbra epilogue
+
+retstruct1:
+ btst #6,%d2
+ jbeq retstruct2
+ move.b %d0,(%a1)
+ jbra epilogue
+
+retstruct2:
+ btst #7,%d2
+ jbeq noretval
+ move.w %d0,(%a1)
+
+noretval:
+epilogue:
+ move.l (%sp)+,%d2
+ unlk %fp
+ rts
+ CFI_ENDPROC()
+ .size ffi_call_SYSV,.-ffi_call_SYSV
+
+ .globl ffi_closure_SYSV
+ .type ffi_closure_SYSV, @function
+ .align 4
+
+ffi_closure_SYSV:
+ CFI_STARTPROC()
+ link %fp,#-12
+ CFI_OFFSET(14,-8)
+ CFI_DEF_CFA(14,8)
+ move.l %sp,-12(%fp)
+ pea 8(%fp)
+ pea -12(%fp)
+ move.l %a0,-(%sp)
+#if !defined __PIC__
+ jsr ffi_closure_SYSV_inner
+#else
+ bsr.l ffi_closure_SYSV_inner@PLTPC
+#endif
+
+ lsr.l #1,%d0
+ jne 1f
+ jcc .Lcls_epilogue
+ move.l -12(%fp),%d0
+.Lcls_epilogue:
+ unlk %fp
+ rts
+1:
+ lea -12(%fp),%a0
+ lsr.l #2,%d0
+ jne 1f
+ jcs .Lcls_ret_float
+ move.l (%a0)+,%d0
+ move.l (%a0),%d1
+ jra .Lcls_epilogue
+.Lcls_ret_float:
+#if defined(__MC68881__)
+ fmove.s (%a0),%fp0
+#else
+ move.l (%a0),%d0
+#endif
+ jra .Lcls_epilogue
+1:
+ lsr.l #2,%d0
+ jne 1f
+ jcs .Lcls_ret_ldouble
+#if defined(__MC68881__)
+ fmove.d (%a0),%fp0
+#else
+ move.l (%a0)+,%d0
+ move.l (%a0),%d1
+#endif
+ jra .Lcls_epilogue
+.Lcls_ret_ldouble:
+#if defined(__MC68881__)
+ fmove.x (%a0),%fp0
+#else
+ move.l (%a0)+,%d0
+ move.l (%a0)+,%d1
+ move.l (%a0),%d2
+#endif
+ jra .Lcls_epilogue
+1:
+ lsr.l #2,%d0
+ jne .Lcls_ret_struct2
+ jcs .Lcls_ret_struct1
+ move.l (%a0),%a0
+ move.l %a0,%d0
+ jra .Lcls_epilogue
+.Lcls_ret_struct1:
+ move.b (%a0),%d0
+ jra .Lcls_epilogue
+.Lcls_ret_struct2:
+ move.w (%a0),%d0
+ jra .Lcls_epilogue
+ CFI_ENDPROC()
+
+ .size ffi_closure_SYSV,.-ffi_closure_SYSV
+
+ .globl ffi_closure_struct_SYSV
+ .type ffi_closure_struct_SYSV, @function
+ .align 4
+
+ffi_closure_struct_SYSV:
+ CFI_STARTPROC()
+ link %fp,#0
+ CFI_OFFSET(14,-8)
+ CFI_DEF_CFA(14,8)
+ move.l %sp,-12(%fp)
+ pea 8(%fp)
+ move.l %a1,-(%sp)
+ move.l %a0,-(%sp)
+#if !defined __PIC__
+ jsr ffi_closure_SYSV_inner
+#else
+ bsr.l ffi_closure_SYSV_inner@PLTPC
+#endif
+ unlk %fp
+ rts
+ CFI_ENDPROC()
+ .size ffi_closure_struct_SYSV,.-ffi_closure_struct_SYSV
+
+#if defined __ELF__ && defined __linux__
+ .section .note.GNU-stack,"",@progbits
+#endif
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