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-rw-r--r--src/frv/eabi.S128
-rw-r--r--src/frv/ffi.c292
-rw-r--r--src/frv/ffitarget.h61
3 files changed, 481 insertions, 0 deletions
diff --git a/src/frv/eabi.S b/src/frv/eabi.S
new file mode 100644
index 0000000..379ea4b
--- /dev/null
+++ b/src/frv/eabi.S
@@ -0,0 +1,128 @@
+/* -----------------------------------------------------------------------
+ eabi.S - Copyright (c) 2004 Anthony Green
+
+ FR-V Assembly glue.
+
+ 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 AUTHOR 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>
+
+ .globl ffi_prep_args_EABI
+
+ .text
+ .p2align 4
+ .globl ffi_call_EABI
+ .type ffi_call_EABI, @function
+
+ # gr8 : ffi_prep_args
+ # gr9 : &ecif
+ # gr10: cif->bytes
+ # gr11: fig->flags
+ # gr12: ecif.rvalue
+ # gr13: fn
+
+ffi_call_EABI:
+ addi sp, #-80, sp
+ sti fp, @(sp, #24)
+ addi sp, #24, fp
+ movsg lr, gr5
+
+ /* Make room for the new arguments. */
+ /* subi sp, fp, gr10 */
+
+ /* Store return address and incoming args on stack. */
+ sti gr5, @(fp, #8)
+ sti gr8, @(fp, #-4)
+ sti gr9, @(fp, #-8)
+ sti gr10, @(fp, #-12)
+ sti gr11, @(fp, #-16)
+ sti gr12, @(fp, #-20)
+ sti gr13, @(fp, #-24)
+
+ sub sp, gr10, sp
+
+ /* Call ffi_prep_args. */
+ ldi @(fp, #-4), gr4
+ addi sp, #0, gr8
+ ldi @(fp, #-8), gr9
+#ifdef __FRV_FDPIC__
+ ldd @(gr4, gr0), gr14
+ calll @(gr14, gr0)
+#else
+ calll @(gr4, gr0)
+#endif
+
+ /* ffi_prep_args returns the new stack pointer. */
+ mov gr8, gr4
+
+ ldi @(sp, #0), gr8
+ ldi @(sp, #4), gr9
+ ldi @(sp, #8), gr10
+ ldi @(sp, #12), gr11
+ ldi @(sp, #16), gr12
+ ldi @(sp, #20), gr13
+
+ /* Always copy the return value pointer into the hidden
+ parameter register. This is only strictly necessary
+ when we're returning an aggregate type, but it doesn't
+ hurt to do this all the time, and it saves a branch. */
+ ldi @(fp, #-20), gr3
+
+ /* Use the ffi_prep_args return value for the new sp. */
+ mov gr4, sp
+
+ /* Call the target function. */
+ ldi @(fp, -24), gr4
+#ifdef __FRV_FDPIC__
+ ldd @(gr4, gr0), gr14
+ calll @(gr14, gr0)
+#else
+ calll @(gr4, gr0)
+#endif
+
+ /* Store the result. */
+ ldi @(fp, #-16), gr10 /* fig->flags */
+ ldi @(fp, #-20), gr4 /* ecif.rvalue */
+
+ /* Is the return value stored in two registers? */
+ cmpi gr10, #8, icc0
+ bne icc0, 0, .L2
+ /* Yes, save them. */
+ sti gr8, @(gr4, #0)
+ sti gr9, @(gr4, #4)
+ bra .L3
+.L2:
+ /* Is the return value a structure? */
+ cmpi gr10, #-1, icc0
+ beq icc0, 0, .L3
+ /* No, save a 4 byte return value. */
+ sti gr8, @(gr4, #0)
+.L3:
+
+ /* Restore the stack, and return. */
+ ldi @(fp, 8), gr5
+ ld @(fp, gr0), fp
+ addi sp,#80,sp
+ jmpl @(gr5,gr0)
+ .size ffi_call_EABI, .-ffi_call_EABI
+
diff --git a/src/frv/ffi.c b/src/frv/ffi.c
new file mode 100644
index 0000000..5698c89
--- /dev/null
+++ b/src/frv/ffi.c
@@ -0,0 +1,292 @@
+/* -----------------------------------------------------------------------
+ ffi.c - Copyright (C) 2004 Anthony Green
+ Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2008 Red Hat, Inc.
+
+ FR-V 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;
+
+ 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;
+ }
+ /* if ((*p_arg)->type == FFI_TYPE_FLOAT)
+ {
+ if (count > 24)
+ {
+ // This is going on the stack. Turn it into a double.
+ *(double *) argp = (double) *(float*)(* p_argv);
+ z = sizeof(double);
+ }
+ else
+ *(void **) argp = *(void **)(* 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 gr7. We must save this
+ pointer in a place that will persist while we do our work. */
+ register ffi_closure *creg __asm__ ("gr7");
+ 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");
+ char *stack_args = frame_pointer + 16;
+
+ /* Lay the register arguments down in a continuous chunk of memory. */
+ unsigned register_args[6] =
+ { arg1, arg2, arg3, arg4, arg5, arg6 };
+
+ 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;
+
+ /* 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:
+ 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 == ((char *)register_args + (6*4)))
+ ptr = stack_args;
+ }
+
+ /* Invoke the closure. */
+ if (cif->rtype->type == FFI_TYPE_STRUCT)
+ {
+ /* The caller allocates space for the return structure, and
+ passes a pointer to this space in gr3. Use this value directly
+ as the return value. */
+ register void *return_struct_ptr __asm__("gr3");
+ (closure->fun) (cif, return_struct_ptr, 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);
+
+ /* Functions return 4-byte or smaller results in gr8. 8-byte
+ values also use gr9. We fill the both, even for small return
+ values, just to avoid a branch. */
+ asm ("ldi @(%0, #0), gr8" : : "r" (&rvalue));
+ asm ("ldi @(%0, #0), gr9" : : "r" (&((int *) &rvalue)[1]));
+ }
+}
+
+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 int *tramp = (unsigned int *) &closure->tramp[0];
+ unsigned long fn = (long) ffi_closure_eabi;
+ unsigned long cls = (long) codeloc;
+#ifdef __FRV_FDPIC__
+ register void *got __asm__("gr15");
+#endif
+ int i;
+
+ fn = (unsigned long) ffi_closure_eabi;
+
+#ifdef __FRV_FDPIC__
+ tramp[0] = &((unsigned int *)codeloc)[2];
+ tramp[1] = got;
+ tramp[2] = 0x8cfc0000 + (fn & 0xffff); /* setlos lo(fn), gr6 */
+ tramp[3] = 0x8efc0000 + (cls & 0xffff); /* setlos lo(cls), gr7 */
+ tramp[4] = 0x8cf80000 + (fn >> 16); /* sethi hi(fn), gr6 */
+ tramp[5] = 0x8ef80000 + (cls >> 16); /* sethi hi(cls), gr7 */
+ tramp[6] = 0x9cc86000; /* ldi @(gr6, #0), gr14 */
+ tramp[7] = 0x8030e000; /* jmpl @(gr14, gr0) */
+#else
+ tramp[0] = 0x8cfc0000 + (fn & 0xffff); /* setlos lo(fn), gr6 */
+ tramp[1] = 0x8efc0000 + (cls & 0xffff); /* setlos lo(cls), gr7 */
+ tramp[2] = 0x8cf80000 + (fn >> 16); /* sethi hi(fn), gr6 */
+ tramp[3] = 0x8ef80000 + (cls >> 16); /* sethi hi(cls), gr7 */
+ tramp[4] = 0x80300006; /* jmpl @(gr0, gr6) */
+#endif
+
+ closure->cif = cif;
+ closure->fun = fun;
+ closure->user_data = user_data;
+
+ /* Cache flushing. */
+ for (i = 0; i < FFI_TRAMPOLINE_SIZE; i++)
+ __asm__ volatile ("dcf @(%0,%1)\n\tici @(%2,%1)" :: "r" (tramp), "r" (i),
+ "r" (codeloc));
+
+ return FFI_OK;
+}
diff --git a/src/frv/ffitarget.h b/src/frv/ffitarget.h
new file mode 100644
index 0000000..1c319ea
--- /dev/null
+++ b/src/frv/ffitarget.h
@@ -0,0 +1,61 @@
+/* -----------------------------------------------------------------*-C-*-
+ ffitarget.h - Copyright (c) 1996-2004 Red Hat, Inc.
+ Target configuration macros for FR-V
+
+ 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
+
+/* ---- System specific configurations ----------------------------------- */
+
+#ifndef LIBFFI_ASM
+typedef unsigned long ffi_arg;
+typedef signed long ffi_sarg;
+
+typedef enum ffi_abi {
+ FFI_FIRST_ABI = 0,
+
+#ifdef FRV
+ FFI_EABI,
+ FFI_DEFAULT_ABI = FFI_EABI,
+#endif
+
+ FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
+} ffi_abi;
+#endif
+
+/* ---- Definitions for closures ----------------------------------------- */
+
+#define FFI_CLOSURES 1
+#define FFI_NATIVE_RAW_API 0
+
+#ifdef __FRV_FDPIC__
+/* Trampolines are 8 4-byte instructions long. */
+#define FFI_TRAMPOLINE_SIZE (8*4)
+#else
+/* Trampolines are 5 4-byte instructions long. */
+#define FFI_TRAMPOLINE_SIZE (5*4)
+#endif
+
+#endif
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