third_party/gofrontend/libffi/src/sparc/ffi.c - llvm-project/llgo - Git at Google

 /* -----------------------------------------------------------------------
    ffi.c - Copyright (c) 2011, 2013 Anthony Green
            Copyright (c) 1996, 2003-2004, 2007-2008 Red Hat, Inc.

    SPARC 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>
 #include "internal.h"

 #ifndef SPARC64

 /* Force FFI_TYPE_LONGDOUBLE to be different than FFI_TYPE_DOUBLE;
    all further uses in this file will refer to the 128-bit type.  */
 #if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
 # if FFI_TYPE_LONGDOUBLE != 4
 #  error FFI_TYPE_LONGDOUBLE out of date
 # endif
 #else
 # undef FFI_TYPE_LONGDOUBLE
 # define FFI_TYPE_LONGDOUBLE 4
 #endif

 /* Perform machine dependent cif processing */
 ffi_status FFI_HIDDEN
 ffi_prep_cif_machdep(ffi_cif *cif)
 {
   ffi_type *rtype = cif->rtype;
   int rtt = rtype->type;
   size_t bytes;
   int i, n, flags;

   /* Set the return type flag */
   switch (rtt)
     {
     case FFI_TYPE_VOID:
       flags = SPARC_RET_VOID;
       break;
     case FFI_TYPE_FLOAT:
       flags = SPARC_RET_F_1;
       break;
     case FFI_TYPE_DOUBLE:
       flags = SPARC_RET_F_2;
       break;
     case FFI_TYPE_LONGDOUBLE:
     case FFI_TYPE_STRUCT:
       flags = (rtype->size & 0xfff) << SPARC_SIZEMASK_SHIFT;
       flags |= SPARC_RET_STRUCT;
       break;
     case FFI_TYPE_SINT8:
       flags = SPARC_RET_SINT8;
       break;
     case FFI_TYPE_UINT8:
       flags = SPARC_RET_UINT8;
       break;
     case FFI_TYPE_SINT16:
       flags = SPARC_RET_SINT16;
       break;
     case FFI_TYPE_UINT16:
       flags = SPARC_RET_UINT16;
       break;
     case FFI_TYPE_INT:
     case FFI_TYPE_SINT32:
     case FFI_TYPE_UINT32:
     case FFI_TYPE_POINTER:
       flags = SPARC_RET_UINT32;
       break;
     case FFI_TYPE_SINT64:
     case FFI_TYPE_UINT64:
       flags = SPARC_RET_INT64;
       break;
     case FFI_TYPE_COMPLEX:
       rtt = rtype->elements[0]->type;
       switch (rtt)
 	{
 	case FFI_TYPE_FLOAT:
 	  flags = SPARC_RET_F_2;
 	  break;
 	case FFI_TYPE_DOUBLE:
 	  flags = SPARC_RET_F_4;
 	  break;
 	case FFI_TYPE_LONGDOUBLE:
 	  flags = SPARC_RET_F_8;
 	  break;
 	case FFI_TYPE_SINT64:
 	case FFI_TYPE_UINT64:
 	  flags = SPARC_RET_INT128;
 	  break;
 	case FFI_TYPE_INT:
 	case FFI_TYPE_SINT32:
 	case FFI_TYPE_UINT32:
 	  flags = SPARC_RET_INT64;
 	  break;
 	case FFI_TYPE_SINT16:
 	case FFI_TYPE_UINT16:
 	  flags = SP_V8_RET_CPLX16;
 	  break;
 	case FFI_TYPE_SINT8:
 	case FFI_TYPE_UINT8:
 	  flags = SP_V8_RET_CPLX8;
 	  break;
 	default:
 	  abort();
 	}
       break;
     default:
       abort();
     }
   cif->flags = flags;

   bytes = 0;
   for (i = 0, n = cif->nargs; i < n; ++i)
     {
       ffi_type *ty = cif->arg_types[i];
       size_t z = ty->size;
       int tt = ty->type;

       switch (tt)
 	{
 	case FFI_TYPE_STRUCT:
 	case FFI_TYPE_LONGDOUBLE:
 	by_reference:
 	  /* Passed by reference.  */
 	  z = 4;
 	  break;

 	case FFI_TYPE_COMPLEX:
 	  tt = ty->elements[0]->type;
 	  if (tt == FFI_TYPE_FLOAT || z > 8)
 	    goto by_reference;
 	  /* FALLTHRU */

 	default:
 	  z = ALIGN(z, 4);
 	}
       bytes += z;
     }

   /* Sparc call frames require that space is allocated for 6 args,
      even if they aren't used. Make that space if necessary.  */
   if (bytes < 6 * 4)
     bytes = 6 * 4;

   /* The ABI always requires space for the struct return pointer.  */
   bytes += 4;

   /* The stack must be 2 word aligned, so round bytes up appropriately. */
   bytes = ALIGN(bytes, 2 * 4);

   /* Include the call frame to prep_args.  */
   bytes += 4*16 + 4*8;
   cif->bytes = bytes;

   return FFI_OK;
 }

 extern void ffi_call_v8(ffi_cif *cif, void (*fn)(void), void *rvalue,
 			void **avalue, size_t bytes, void *closure) FFI_HIDDEN;

 int FFI_HIDDEN
 ffi_prep_args_v8(ffi_cif *cif, unsigned long *argp, void *rvalue, void **avalue)
 {
   ffi_type **p_arg;
   int flags = cif->flags;
   int i, nargs;

   if (rvalue == NULL)
     {
       if ((flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
 	{
 	  /* Since we pass the pointer to the callee, we need a value.
 	     We allowed for this space in ffi_call, before ffi_call_v8
 	     alloca'd the space.  */
 	  rvalue = (char *)argp + cif->bytes;
 	}
       else
 	{
 	  /* Otherwise, we can ignore the return value.  */
 	  flags = SPARC_RET_VOID;
 	}
     }

   /* This could only really be done when we are returning a structure.
      However, the space is reserved so we can do it unconditionally.  */
   *argp++ = (unsigned long)rvalue;

 #ifdef USING_PURIFY
   /* Purify will probably complain in our assembly routine,
      unless we zero out this memory. */
   memset(argp, 0, 6*4);
 #endif

   p_arg = cif->arg_types;
   for (i = 0, nargs = cif->nargs; i < nargs; i++)
     {
       ffi_type *ty = p_arg[i];
       void *a = avalue[i];
       int tt = ty->type;
       size_t z;

       switch (tt)
 	{
 	case FFI_TYPE_STRUCT:
 	case FFI_TYPE_LONGDOUBLE:
 	by_reference:
 	  *argp++ = (unsigned long)a;
 	  break;

 	case FFI_TYPE_DOUBLE:
 	case FFI_TYPE_UINT64:
 	case FFI_TYPE_SINT64:
 	  memcpy(argp, a, 8);
 	  argp += 2;
 	  break;

 	case FFI_TYPE_INT:
 	case FFI_TYPE_FLOAT:
 	case FFI_TYPE_UINT32:
 	case FFI_TYPE_SINT32:
 	case FFI_TYPE_POINTER:
 	  *argp++ = *(unsigned *)a;
 	  break;

 	case FFI_TYPE_UINT8:
 	  *argp++ = *(UINT8 *)a;
 	  break;
 	case FFI_TYPE_SINT8:
 	  *argp++ = *(SINT8 *)a;
 	  break;
 	case FFI_TYPE_UINT16:
 	  *argp++ = *(UINT16 *)a;
 	  break;
 	case FFI_TYPE_SINT16:
 	  *argp++ = *(SINT16 *)a;
 	  break;

         case FFI_TYPE_COMPLEX:
 	  tt = ty->elements[0]->type;
 	  z = ty->size;
 	  if (tt == FFI_TYPE_FLOAT || z > 8)
 	    goto by_reference;
 	  if (z < 4)
 	    {
 	      memcpy((char *)argp + 4 - z, a, z);
 	      argp++;
 	    }
 	  else
 	    {
 	      memcpy(argp, a, z);
 	      argp += z / 4;
 	    }
 	  break;

 	default:
 	  abort();
 	}
     }

   return flags;
 }

 static void
 ffi_call_int (ffi_cif *cif, void (*fn)(void), void *rvalue,
 	      void **avalue, void *closure)
 {
   size_t bytes = cif->bytes;

   FFI_ASSERT (cif->abi == FFI_V8);

   /* If we've not got a return value, we need to create one if we've
      got to pass the return value to the callee.  Otherwise ignore it.  */
   if (rvalue == NULL
       && (cif->flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
     bytes += ALIGN (cif->rtype->size, 8);

   ffi_call_v8(cif, fn, rvalue, avalue, -bytes, closure);
 }

 void
 ffi_call (ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue)
 {
   ffi_call_int (cif, fn, rvalue, avalue, NULL);
 }

 void
 ffi_call_go (ffi_cif *cif, void (*fn)(void), void *rvalue,
 	     void **avalue, void *closure)
 {
   ffi_call_int (cif, fn, rvalue, avalue, closure);
 }

 #ifdef __GNUC__
 static inline void
 ffi_flush_icache (void *p)
 {
   /* SPARC v8 requires 5 instructions for flush to be visible */
   asm volatile ("iflush	%0; iflush %0+8; nop; nop; nop; nop; nop"
 		: : "r" (p) : "memory");
 }
 #else
 extern void ffi_flush_icache (void *) FFI_HIDDEN;
 #endif

 extern void ffi_closure_v8(void) FFI_HIDDEN;
 extern void ffi_go_closure_v8(void) FFI_HIDDEN;

 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 ctx = (unsigned long) closure;
   unsigned long fn = (unsigned long) ffi_closure_v8;

   if (cif->abi != FFI_V8)
     return FFI_BAD_ABI;

   tramp[0] = 0x03000000 | fn >> 10;	/* sethi %hi(fn), %g1	*/
   tramp[1] = 0x05000000 | ctx >> 10;	/* sethi %hi(ctx), %g2	*/
   tramp[2] = 0x81c06000 | (fn & 0x3ff);	/* jmp   %g1+%lo(fn)	*/
   tramp[3] = 0x8410a000 | (ctx & 0x3ff);/* or    %g2, %lo(ctx)	*/

   closure->cif = cif;
   closure->fun = fun;
   closure->user_data = user_data;

   ffi_flush_icache (closure);

   return FFI_OK;
 }

 ffi_status
 ffi_prep_go_closure (ffi_go_closure *closure, ffi_cif *cif,
 		     void (*fun)(ffi_cif*, void*, void**, void*))
 {
   if (cif->abi != FFI_V8)
     return FFI_BAD_ABI;

   closure->tramp = ffi_go_closure_v8;
   closure->cif = cif;
   closure->fun = fun;

   return FFI_OK;
 }

 int FFI_HIDDEN
 ffi_closure_sparc_inner_v8(ffi_cif *cif,
 			   void (*fun)(ffi_cif*, void*, void**, void*),
 			   void *user_data, void *rvalue,
 			   unsigned long *argp)
 {
   ffi_type **arg_types;
   void **avalue;
   int i, nargs, flags;

   arg_types = cif->arg_types;
   nargs = cif->nargs;
   flags = cif->flags;
   avalue = alloca(nargs * sizeof(void *));

   /* Copy the caller's structure return address so that the closure
      returns the data directly to the caller.  Also install it so we
      can return the address in %o0.  */
   if ((flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
     {
       void *new_rvalue = (void *)*argp;
       *(void **)rvalue = new_rvalue;
       rvalue = new_rvalue;
     }

   /* Always skip the structure return address.  */
   argp++;

   /* Grab the addresses of the arguments from the stack frame.  */
   for (i = 0; i < nargs; i++)
     {
       ffi_type *ty = arg_types[i];
       int tt = ty->type;
       void *a = argp;
       size_t z;

       switch (tt)
 	{
 	case FFI_TYPE_STRUCT:
 	case FFI_TYPE_LONGDOUBLE:
 	by_reference:
 	  /* Straight copy of invisible reference.  */
 	  a = (void *)*argp;
 	  break;

 	case FFI_TYPE_DOUBLE:
 	case FFI_TYPE_SINT64:
 	case FFI_TYPE_UINT64:
 	  if ((unsigned long)a & 7)
 	    {
 	      /* Align on a 8-byte boundary.  */
 	      UINT64 *tmp = alloca(8);
 	      *tmp = ((UINT64)argp[0] << 32) | argp[1];
 	      a = tmp;
 	    }
 	  argp++;
 	  break;

 	case FFI_TYPE_INT:
 	case FFI_TYPE_FLOAT:
 	case FFI_TYPE_UINT32:
 	case FFI_TYPE_SINT32:
 	case FFI_TYPE_POINTER:
 	  break;
         case FFI_TYPE_UINT16:
         case FFI_TYPE_SINT16:
 	  a += 2;
 	  break;
         case FFI_TYPE_UINT8:
         case FFI_TYPE_SINT8:
 	  a += 3;
 	  break;

         case FFI_TYPE_COMPLEX:
 	  tt = ty->elements[0]->type;
 	  z = ty->size;
 	  if (tt == FFI_TYPE_FLOAT || z > 8)
 	    goto by_reference;
 	  if (z < 4)
 	    a += 4 - z;
 	  else if (z > 4)
 	    argp++;
 	  break;

 	default:
 	  abort();
 	}
       argp++;
       avalue[i] = a;
     }

   /* Invoke the closure.  */
   fun (cif, rvalue, avalue, user_data);

   /* Tell ffi_closure_sparc how to perform return type promotions.  */
   return flags;
 }
 #endif /* !SPARC64 */
	/* -----------------------------------------------------------------------
	ffi.c - Copyright (c) 2011, 2013 Anthony Green
	Copyright (c) 1996, 2003-2004, 2007-2008 Red Hat, Inc.

	SPARC 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>
	#include "internal.h"

	#ifndef SPARC64

	/* Force FFI_TYPE_LONGDOUBLE to be different than FFI_TYPE_DOUBLE;
	all further uses in this file will refer to the 128-bit type. */
	#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
	# if FFI_TYPE_LONGDOUBLE != 4
	# error FFI_TYPE_LONGDOUBLE out of date
	# endif
	#else
	# undef FFI_TYPE_LONGDOUBLE
	# define FFI_TYPE_LONGDOUBLE 4
	#endif

	/* Perform machine dependent cif processing */
	ffi_status FFI_HIDDEN
	ffi_prep_cif_machdep(ffi_cif *cif)
	{
	ffi_type *rtype = cif->rtype;
	int rtt = rtype->type;
	size_t bytes;
	int i, n, flags;

	/* Set the return type flag */
	switch (rtt)
	{
	case FFI_TYPE_VOID:
	flags = SPARC_RET_VOID;
	break;
	case FFI_TYPE_FLOAT:
	flags = SPARC_RET_F_1;
	break;
	case FFI_TYPE_DOUBLE:
	flags = SPARC_RET_F_2;
	break;
	case FFI_TYPE_LONGDOUBLE:
	case FFI_TYPE_STRUCT:
	flags = (rtype->size & 0xfff) << SPARC_SIZEMASK_SHIFT;
	flags \|= SPARC_RET_STRUCT;
	break;
	case FFI_TYPE_SINT8:
	flags = SPARC_RET_SINT8;
	break;
	case FFI_TYPE_UINT8:
	flags = SPARC_RET_UINT8;
	break;
	case FFI_TYPE_SINT16:
	flags = SPARC_RET_SINT16;
	break;
	case FFI_TYPE_UINT16:
	flags = SPARC_RET_UINT16;
	break;
	case FFI_TYPE_INT:
	case FFI_TYPE_SINT32:
	case FFI_TYPE_UINT32:
	case FFI_TYPE_POINTER:
	flags = SPARC_RET_UINT32;
	break;
	case FFI_TYPE_SINT64:
	case FFI_TYPE_UINT64:
	flags = SPARC_RET_INT64;
	break;
	case FFI_TYPE_COMPLEX:
	rtt = rtype->elements[0]->type;
	switch (rtt)
	{
	case FFI_TYPE_FLOAT:
	flags = SPARC_RET_F_2;
	break;
	case FFI_TYPE_DOUBLE:
	flags = SPARC_RET_F_4;
	break;
	case FFI_TYPE_LONGDOUBLE:
	flags = SPARC_RET_F_8;
	break;
	case FFI_TYPE_SINT64:
	case FFI_TYPE_UINT64:
	flags = SPARC_RET_INT128;
	break;
	case FFI_TYPE_INT:
	case FFI_TYPE_SINT32:
	case FFI_TYPE_UINT32:
	flags = SPARC_RET_INT64;
	break;
	case FFI_TYPE_SINT16:
	case FFI_TYPE_UINT16:
	flags = SP_V8_RET_CPLX16;
	break;
	case FFI_TYPE_SINT8:
	case FFI_TYPE_UINT8:
	flags = SP_V8_RET_CPLX8;
	break;
	default:
	abort();
	}
	break;
	default:
	abort();
	}
	cif->flags = flags;

	bytes = 0;
	for (i = 0, n = cif->nargs; i < n; ++i)
	{
	ffi_type *ty = cif->arg_types[i];
	size_t z = ty->size;
	int tt = ty->type;

	switch (tt)
	{
	case FFI_TYPE_STRUCT:
	case FFI_TYPE_LONGDOUBLE:
	by_reference:
	/* Passed by reference. */
	z = 4;
	break;

	case FFI_TYPE_COMPLEX:
	tt = ty->elements[0]->type;
	if (tt == FFI_TYPE_FLOAT \|\| z > 8)
	goto by_reference;
	/* FALLTHRU */

	default:
	z = ALIGN(z, 4);
	}
	bytes += z;
	}

	/* Sparc call frames require that space is allocated for 6 args,
	even if they aren't used. Make that space if necessary. */
	if (bytes < 6 * 4)
	bytes = 6 * 4;

	/* The ABI always requires space for the struct return pointer. */
	bytes += 4;

	/* The stack must be 2 word aligned, so round bytes up appropriately. */
	bytes = ALIGN(bytes, 2 * 4);

	/* Include the call frame to prep_args. */
	bytes += 416 + 48;
	cif->bytes = bytes;

	return FFI_OK;
	}

	extern void ffi_call_v8(ffi_cif cif, void (fn)(void), void *rvalue,
	void *avalue, size_t bytes, void closure) FFI_HIDDEN;

	int FFI_HIDDEN
	ffi_prep_args_v8(ffi_cif cif, unsigned long argp, void rvalue, void *avalue)
	{
	ffi_type **p_arg;
	int flags = cif->flags;
	int i, nargs;

	if (rvalue == NULL)
	{
	if ((flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
	{
	/* Since we pass the pointer to the callee, we need a value.
	We allowed for this space in ffi_call, before ffi_call_v8
	alloca'd the space. */
	rvalue = (char *)argp + cif->bytes;
	}
	else
	{
	/* Otherwise, we can ignore the return value. */
	flags = SPARC_RET_VOID;
	}
	}

	/* This could only really be done when we are returning a structure.
	However, the space is reserved so we can do it unconditionally. */
	*argp++ = (unsigned long)rvalue;

	#ifdef USING_PURIFY
	/* Purify will probably complain in our assembly routine,
	unless we zero out this memory. */
	memset(argp, 0, 6*4);
	#endif

	p_arg = cif->arg_types;
	for (i = 0, nargs = cif->nargs; i < nargs; i++)
	{
	ffi_type *ty = p_arg[i];
	void *a = avalue[i];
	int tt = ty->type;
	size_t z;

	switch (tt)
	{
	case FFI_TYPE_STRUCT:
	case FFI_TYPE_LONGDOUBLE:
	by_reference:
	*argp++ = (unsigned long)a;
	break;

	case FFI_TYPE_DOUBLE:
	case FFI_TYPE_UINT64:
	case FFI_TYPE_SINT64:
	memcpy(argp, a, 8);
	argp += 2;
	break;

	case FFI_TYPE_INT:
	case FFI_TYPE_FLOAT:
	case FFI_TYPE_UINT32:
	case FFI_TYPE_SINT32:
	case FFI_TYPE_POINTER:
	argp++ = (unsigned *)a;
	break;

	case FFI_TYPE_UINT8:
	argp++ = (UINT8 *)a;
	break;
	case FFI_TYPE_SINT8:
	argp++ = (SINT8 *)a;
	break;
	case FFI_TYPE_UINT16:
	argp++ = (UINT16 *)a;
	break;
	case FFI_TYPE_SINT16:
	argp++ = (SINT16 *)a;
	break;

	case FFI_TYPE_COMPLEX:
	tt = ty->elements[0]->type;
	z = ty->size;
	if (tt == FFI_TYPE_FLOAT \|\| z > 8)
	goto by_reference;
	if (z < 4)
	{
	memcpy((char *)argp + 4 - z, a, z);
	argp++;
	}
	else
	{
	memcpy(argp, a, z);
	argp += z / 4;
	}
	break;

	default:
	abort();
	}
	}

	return flags;
	}

	static void
	ffi_call_int (ffi_cif cif, void (fn)(void), void *rvalue,
	void *avalue, void closure)
	{
	size_t bytes = cif->bytes;

	FFI_ASSERT (cif->abi == FFI_V8);

	/* If we've not got a return value, we need to create one if we've
	got to pass the return value to the callee. Otherwise ignore it. */
	if (rvalue == NULL
	&& (cif->flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
	bytes += ALIGN (cif->rtype->size, 8);

	ffi_call_v8(cif, fn, rvalue, avalue, -bytes, closure);
	}

	void
	ffi_call (ffi_cif cif, void (fn)(void), void rvalue, void *avalue)
	{
	ffi_call_int (cif, fn, rvalue, avalue, NULL);
	}

	void
	ffi_call_go (ffi_cif cif, void (fn)(void), void *rvalue,
	void *avalue, void closure)
	{
	ffi_call_int (cif, fn, rvalue, avalue, closure);
	}

	#ifdef __GNUC__
	static inline void
	ffi_flush_icache (void *p)
	{
	/* SPARC v8 requires 5 instructions for flush to be visible */
	asm volatile ("iflush %0; iflush %0+8; nop; nop; nop; nop; nop"
	: : "r" (p) : "memory");
	}
	#else
	extern void ffi_flush_icache (void *) FFI_HIDDEN;
	#endif

	extern void ffi_closure_v8(void) FFI_HIDDEN;
	extern void ffi_go_closure_v8(void) FFI_HIDDEN;

	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 ctx = (unsigned long) closure;
	unsigned long fn = (unsigned long) ffi_closure_v8;

	if (cif->abi != FFI_V8)
	return FFI_BAD_ABI;

	tramp[0] = 0x03000000 \| fn >> 10; /* sethi %hi(fn), %g1 */
	tramp[1] = 0x05000000 \| ctx >> 10; /* sethi %hi(ctx), %g2 */
	tramp[2] = 0x81c06000 \| (fn & 0x3ff); /* jmp %g1+%lo(fn) */
	tramp[3] = 0x8410a000 \| (ctx & 0x3ff);/* or %g2, %lo(ctx) */

	closure->cif = cif;
	closure->fun = fun;
	closure->user_data = user_data;

	ffi_flush_icache (closure);

	return FFI_OK;
	}

	ffi_status
	ffi_prep_go_closure (ffi_go_closure closure, ffi_cif cif,
	void (fun)(ffi_cif, void, void, void))
	{
	if (cif->abi != FFI_V8)
	return FFI_BAD_ABI;

	closure->tramp = ffi_go_closure_v8;
	closure->cif = cif;
	closure->fun = fun;

	return FFI_OK;
	}

	int FFI_HIDDEN
	ffi_closure_sparc_inner_v8(ffi_cif *cif,
	void (fun)(ffi_cif, void, void, void),
	void user_data, void rvalue,
	unsigned long *argp)
	{
	ffi_type **arg_types;
	void **avalue;
	int i, nargs, flags;

	arg_types = cif->arg_types;
	nargs = cif->nargs;
	flags = cif->flags;
	avalue = alloca(nargs * sizeof(void *));

	/* Copy the caller's structure return address so that the closure
	returns the data directly to the caller. Also install it so we
	can return the address in %o0. */
	if ((flags & SPARC_FLAG_RET_MASK) == SPARC_RET_STRUCT)
	{
	void new_rvalue = (void )*argp;
	(void *)rvalue = new_rvalue;
	rvalue = new_rvalue;
	}

	/* Always skip the structure return address. */
	argp++;

	/* Grab the addresses of the arguments from the stack frame. */
	for (i = 0; i < nargs; i++)
	{
	ffi_type *ty = arg_types[i];
	int tt = ty->type;
	void *a = argp;
	size_t z;

	switch (tt)
	{
	case FFI_TYPE_STRUCT:
	case FFI_TYPE_LONGDOUBLE:
	by_reference:
	/* Straight copy of invisible reference. */
	a = (void )argp;
	break;

	case FFI_TYPE_DOUBLE:
	case FFI_TYPE_SINT64:
	case FFI_TYPE_UINT64:
	if ((unsigned long)a & 7)
	{
	/* Align on a 8-byte boundary. */
	UINT64 *tmp = alloca(8);
	*tmp = ((UINT64)argp[0] << 32) \| argp[1];
	a = tmp;
	}
	argp++;
	break;

	case FFI_TYPE_INT:
	case FFI_TYPE_FLOAT:
	case FFI_TYPE_UINT32:
	case FFI_TYPE_SINT32:
	case FFI_TYPE_POINTER:
	break;
	case FFI_TYPE_UINT16:
	case FFI_TYPE_SINT16:
	a += 2;
	break;
	case FFI_TYPE_UINT8:
	case FFI_TYPE_SINT8:
	a += 3;
	break;

	case FFI_TYPE_COMPLEX:
	tt = ty->elements[0]->type;
	z = ty->size;
	if (tt == FFI_TYPE_FLOAT \|\| z > 8)
	goto by_reference;
	if (z < 4)
	a += 4 - z;
	else if (z > 4)
	argp++;
	break;

	default:
	abort();
	}
	argp++;
	avalue[i] = a;
	}

	/* Invoke the closure. */
	fun (cif, rvalue, avalue, user_data);

	/* Tell ffi_closure_sparc how to perform return type promotions. */
	return flags;
	}
	#endif /* !SPARC64 */