[ctypes-commit] ctypes/source/gcc/libffi/src/alpha ffi.c,NONE,1.1 ffitarget.h,NONE,1.1 osf.S,NONE,1.1

[Thomas H. <th...@us...>]

Update of /cvsroot/ctypes/ctypes/source/gcc/libffi/src/alpha
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv12302/gcc/libffi/src/alpha

Added Files:
	ffi.c ffitarget.h osf.S 
Log Message:
Importing libffi sources and build tools.


--- NEW FILE: osf.S ---
/* -----------------------------------------------------------------------
   osf.S - Copyright (c) 1998, 2001 Red Hat
   
   Alpha/OSF Foreign Function Interface 

   $Id: osf.S,v 1.1 2004/06/18 20:07:09 theller Exp $

   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.
   ----------------------------------------------------------------------- */

#define LIBFFI_ASM	
#include <fficonfig.h>
#include <ffi.h>

	.arch ev6
	.text

/* ffi_call_osf (void *args, unsigned long bytes, unsigned flags,
		 void *raddr, void (*fnaddr)());

   Bit o trickiness here -- ARGS+BYTES is the base of the stack frame
   for this function.  This has been allocated by ffi_call.  We also
   deallocate some of the stack that has been alloca'd.  */

	.align	3
	.globl	ffi_call_osf
	.ent	ffi_call_osf
ffi_call_osf:
	.frame	$15, 32, $26, 0
	.mask   0x4008000, -32
$LFB1:
	addq	$16,$17,$1
	mov	$16, $30
	stq	$26, 0($1)
$LCFI0:
	stq	$15, 8($1)
$LCFI1:
	stq	$18, 16($1)
	mov	$1, $15
$LCFI2:
	.prologue 0

	stq	$19, 24($1)
	mov	$20, $27

	# Load up all of the (potential) argument registers.
	ldq	$16, 0($30)
	ldt	$f16, 0($30)
	ldt	$f17, 8($30)
	ldq	$17, 8($30)
	ldt	$f18, 16($30)
	ldq	$18, 16($30)
	ldt	$f19, 24($30)
	ldq	$19, 24($30)
	ldt	$f20, 32($30)
	ldq	$20, 32($30)
	ldt	$f21, 40($30)
	ldq	$21, 40($30)

	# Deallocate the register argument area.
	lda	$30, 48($30)

	jsr	$26, ($27), 0
	ldgp	$29, 0($26)

	# If the return value pointer is NULL, assume no return value.
	ldq	$19, 24($15)
	ldq	$18, 16($15)
	ldq	$26, 0($15)
	beq	$19, $noretval

	# Store the return value out in the proper type.
	cmpeq	$18, FFI_TYPE_INT, $1
	bne	$1, $retint
	cmpeq	$18, FFI_TYPE_FLOAT, $2
	bne	$2, $retfloat
	cmpeq	$18, FFI_TYPE_DOUBLE, $3
	bne	$3, $retdouble

$noretval:
	ldq	$15, 8($15)
	ret

$retint:
	stq	$0, 0($19)
	nop
	ldq	$15, 8($15)
	ret

$retfloat:
	sts	$f0, 0($19)
	nop
	ldq	$15, 8($15)
	ret

$retdouble:
	stt	$f0, 0($19)
	nop
	ldq	$15, 8($15)
	ret
$LFE1:

	.end	ffi_call_osf

/* ffi_closure_osf(...)

   Receives the closure argument in $1.   */

	.align	3
	.globl	ffi_closure_osf
	.ent	ffi_closure_osf
ffi_closure_osf:
	.frame	$30, 16*8, $26, 0
	.mask	0x4000000, -16*8
$LFB2:
	ldgp	$29, 0($27)
	subq	$30, 16*8, $30
$LCFI5:
	stq	$26, 0($30)
$LCFI6:
	.prologue 1

	# Store all of the potential argument registers in va_list format.
	stt	$f16, 4*8($30)
	stt	$f17, 5*8($30)
	stt	$f18, 6*8($30)
	stt	$f19, 7*8($30)
	stt	$f20, 8*8($30)
	stt	$f21, 9*8($30)
	stq	$16, 10*8($30)
	stq	$17, 11*8($30)
	stq	$18, 12*8($30)
	stq	$19, 13*8($30)
	stq	$20, 14*8($30)
	stq	$21, 15*8($30)

	# Call ffi_closure_osf_inner to do the bulk of the work.
	mov	$1, $16
	lda	$17, 2*8($30)
	lda	$18, 10*8($30)
	jsr	$26, ffi_closure_osf_inner
	ldgp	$29, 0($26)
	ldq	$26, 0($30)

	# Load up the return value in the proper type.
	lda	$1, $load_table
	s4addq	$0, $1, $1
	ldl	$1, 0($1)
	addq	$1, $29, $1
	jmp	$31, ($1), $load_32

	.align 4
$load_none:
	addq	$30, 16*8, $30
	ret

	.align 4
$load_float:
	lds	$f0, 16($30)
	nop
	addq	$30, 16*8, $30
	ret

	.align 4
$load_double:
	ldt	$f0, 16($30)
	nop
	addq	$30, 16*8, $30
	ret

	.align 4
$load_u8:
#ifdef __alpha_bwx__
	ldbu	$0, 16($30)
	nop
#else
	ldq	$0, 16($30)
	and	$0, 255, $0
#endif
	addq	$30, 16*8, $30
	ret

	.align 4
$load_s8:
#ifdef __alpha_bwx__
	ldbu	$0, 16($30)
	sextb	$0, $0
#else
	ldq	$0, 16($30)
	sll	$0, 56, $0
	sra	$0, 56, $0
#endif
	addq	$30, 16*8, $30
	ret

	.align 4
$load_u16:
#ifdef __alpha_bwx__
	ldwu	$0, 16($30)
	nop
#else
	ldq	$0, 16($30)
	zapnot	$0, 3, $0
#endif
	addq	$30, 16*8, $30
	ret

	.align 4
$load_s16:
#ifdef __alpha_bwx__
	ldwu	$0, 16($30)
	sextw	$0, $0
#else
	ldq	$0, 16($30)
	sll	$0, 48, $0
	sra	$0, 48, $0
#endif
	addq	$30, 16*8, $30
	ret

	.align 4
$load_32:
	ldl	$0, 16($30)
	nop
	addq	$30, 16*8, $30
	ret

	.align 4
$load_64:
	ldq	$0, 16($30)
	nop
	addq	$30, 16*8, $30
	ret
$LFE2:

	.end	ffi_closure_osf

#ifdef __ELF__
.section .rodata
#else
.rdata
#endif
$load_table:
	.gprel32 $load_none	# FFI_TYPE_VOID
	.gprel32 $load_32	# FFI_TYPE_INT
	.gprel32 $load_float	# FFI_TYPE_FLOAT
	.gprel32 $load_double	# FFI_TYPE_DOUBLE
	.gprel32 $load_double	# FFI_TYPE_LONGDOUBLE
	.gprel32 $load_u8	# FFI_TYPE_UINT8
	.gprel32 $load_s8	# FFI_TYPE_SINT8
	.gprel32 $load_u16	# FFI_TYPE_UINT16
	.gprel32 $load_s16	# FFI_TYPE_SINT16
	.gprel32 $load_32	# FFI_TYPE_UINT32
	.gprel32 $load_32	# FFI_TYPE_SINT32
	.gprel32 $load_64	# FFI_TYPE_UINT64
	.gprel32 $load_64	# FFI_TYPE_SINT64
	.gprel32 $load_none	# FFI_TYPE_STRUCT
	.gprel32 $load_64	# FFI_TYPE_POINTER

/* Assert that the table above is in sync with ffi.h.  */

#if	   FFI_TYPE_FLOAT != 2		\
	|| FFI_TYPE_DOUBLE != 3		\
	|| FFI_TYPE_UINT8 != 5		\
	|| FFI_TYPE_SINT8 != 6		\
	|| FFI_TYPE_UINT16 != 7		\
	|| FFI_TYPE_SINT16 != 8		\
	|| FFI_TYPE_UINT32 != 9		\
	|| FFI_TYPE_SINT32 != 10	\
	|| FFI_TYPE_UINT64 != 11	\
	|| FFI_TYPE_SINT64 != 12	\
	|| FFI_TYPE_STRUCT != 13	\
	|| FFI_TYPE_POINTER != 14	\
	|| FFI_TYPE_LAST != 14
#error "osf.S out of sync with ffi.h"
#endif

#ifdef __ELF__
	.section	.eh_frame,EH_FRAME_FLAGS,@progbits
__FRAME_BEGIN__:
	.4byte	$LECIE1-$LSCIE1	 # Length of Common Information Entry
$LSCIE1:
	.4byte	0x0	 # CIE Identifier Tag
	.byte	0x1	 # CIE Version
	.ascii "zR\0"	 # CIE Augmentation
	.byte	0x1	 # uleb128 0x1; CIE Code Alignment Factor
	.byte	0x78	 # sleb128 -8; CIE Data Alignment Factor
	.byte	0x1a	 # CIE RA Column
	.byte	0x1	 # uleb128 0x1; Augmentation size
	.byte	0x1b	 # FDE Encoding (pcrel sdata4)
	.byte	0xc	 # DW_CFA_def_cfa
	.byte	0x1e	 # uleb128 0x1e
	.byte	0x0	 # uleb128 0x0
	.align 3
$LECIE1:
$LSFDE1:
	.4byte	$LEFDE1-$LASFDE1	 # FDE Length
$LASFDE1:
	.4byte	$LASFDE1-__FRAME_BEGIN__	 # FDE CIE offset
	.4byte	$LFB1-.	 # FDE initial location
	.4byte	$LFE1-$LFB1	 # FDE address range
	.byte	0x0	 # uleb128 0x0; Augmentation size
	.byte	0x4	 # DW_CFA_advance_loc4
	.4byte	$LCFI0-$LFB1
	.byte	0xe	 # DW_CFA_def_cfa_offset
	.byte	0x30	 # uleb128 0x30
	.byte	0x4	 # DW_CFA_advance_loc4
	.4byte	$LCFI1-$LCFI0
	.byte	0x9a	 # DW_CFA_offset, column 0x1a
	.byte	0x6	 # uleb128 0x6
	.byte	0x8f	 # DW_CFA_offset, column 0xf
	.byte	0x5	 # uleb128 0x5
	.byte	0x4	 # DW_CFA_advance_loc4
	.4byte	$LCFI2-$LCFI1
	.byte	0xc	 # DW_CFA_def_cfa
	.byte	0xf	 # uleb128 0xf
	.byte	0x30	 # uleb128 0x30
	.align 3
$LEFDE1:

$LSFDE3:
	.4byte	$LEFDE3-$LASFDE3	 # FDE Length
$LASFDE3:
	.4byte	$LASFDE3-__FRAME_BEGIN__	 # FDE CIE offset
	.4byte	$LFB2-.	 # FDE initial location
	.4byte	$LFE2-$LFB2	 # FDE address range
	.byte	0x0	 # uleb128 0x0; Augmentation size
	.byte	0x4	 # DW_CFA_advance_loc4
	.4byte	$LCFI5-$LFB2
	.byte	0xe	 # DW_CFA_def_cfa_offset
	.byte	0x90,0x1	 # uleb128 0x90
	.byte	0x4	 # DW_CFA_advance_loc4
	.4byte	$LCFI6-$LCFI5
	.byte	0x9a	 # DW_CFA_offset, column 0x1a
	.byte	0x12	 # uleb128 0x12
	.align 3
$LEFDE3:
#endif

--- NEW FILE: ffi.c ---
/* -----------------------------------------------------------------------
   ffi.c - Copyright (c) 1998, 2001 Red Hat, Inc.
   
   Alpha 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 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.
   ----------------------------------------------------------------------- */

#include <ffi.h>
#include <ffi_common.h>

#include <stdlib.h>

extern void ffi_call_osf(void *, unsigned long, unsigned, void *, void (*)());
extern void ffi_closure_osf(void);


ffi_status
ffi_prep_cif_machdep(ffi_cif *cif)
{
  /* Adjust cif->bytes to represent a minimum 6 words for the temporary
     register argument loading area.  */
  if (cif->bytes < 6*FFI_SIZEOF_ARG)
    cif->bytes = 6*FFI_SIZEOF_ARG;

  /* Set the return type flag */
  switch (cif->rtype->type)
    {
    case FFI_TYPE_STRUCT:
    case FFI_TYPE_FLOAT:
    case FFI_TYPE_DOUBLE:
      cif->flags = cif->rtype->type;
      break;

    default:
      cif->flags = FFI_TYPE_INT;
      break;
    }
  
  return FFI_OK;
}

void
ffi_call(ffi_cif *cif, void (*fn)(), void *rvalue, void **avalue)
{
  unsigned long *stack, *argp;
  long i, avn;
  ffi_type **arg_types;
  
  FFI_ASSERT (cif->abi == FFI_OSF);

  /* 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->flags == FFI_TYPE_STRUCT)
    rvalue = alloca(cif->rtype->size);

  /* Allocate the space for the arguments, plus 4 words of temp
     space for ffi_call_osf.  */
  argp = stack = alloca(cif->bytes + 4*FFI_SIZEOF_ARG);

  if (cif->flags == FFI_TYPE_STRUCT)
    *(void **) argp++ = rvalue;

  i = 0;
  avn = cif->nargs;
  arg_types = cif->arg_types;

  while (i < avn)
    {
      switch ((*arg_types)->type)
	{
	case FFI_TYPE_SINT8:
	  *(SINT64 *) argp = *(SINT8 *)(* avalue);
	  break;
		  
	case FFI_TYPE_UINT8:
	  *(SINT64 *) argp = *(UINT8 *)(* avalue);
	  break;
		  
	case FFI_TYPE_SINT16:
	  *(SINT64 *) argp = *(SINT16 *)(* avalue);
	  break;
		  
	case FFI_TYPE_UINT16:
	  *(SINT64 *) argp = *(UINT16 *)(* avalue);
	  break;
		  
	case FFI_TYPE_SINT32:
	case FFI_TYPE_UINT32:
	  /* Note that unsigned 32-bit quantities are sign extended.  */
	  *(SINT64 *) argp = *(SINT32 *)(* avalue);
	  break;
		  
	case FFI_TYPE_SINT64:
	case FFI_TYPE_UINT64:
	case FFI_TYPE_POINTER:
	  *(UINT64 *) argp = *(UINT64 *)(* avalue);
	  break;

	case FFI_TYPE_FLOAT:
	  if (argp - stack < 6)
	    {
	      /* Note the conversion -- all the fp regs are loaded as
		 doubles.  The in-register format is the same.  */
	      *(double *) argp = *(float *)(* avalue);
	    }
	  else
	    *(float *) argp = *(float *)(* avalue);
	  break;

	case FFI_TYPE_DOUBLE:
	  *(double *) argp = *(double *)(* avalue);
	  break;

	case FFI_TYPE_STRUCT:
	  memcpy(argp, *avalue, (*arg_types)->size);
	  break;

	default:
	  FFI_ASSERT(0);
	}

      argp += ALIGN((*arg_types)->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
      i++, arg_types++, avalue++;
    }

  ffi_call_osf(stack, cif->bytes, cif->flags, rvalue, fn);
}


ffi_status
ffi_prep_closure (ffi_closure* closure,
		  ffi_cif* cif,
		  void (*fun)(ffi_cif*, void*, void**, void*),
		  void *user_data)
{
  unsigned int *tramp;

  FFI_ASSERT (cif->abi == FFI_OSF);

  tramp = (unsigned int *) &closure->tramp[0];
  tramp[0] = 0x47fb0401;	/* mov $27,$1		*/
  tramp[1] = 0xa77b0010;	/* ldq $27,16($27)	*/
  tramp[2] = 0x6bfb0000;	/* jmp $31,($27),0	*/
  tramp[3] = 0x47ff041f;	/* nop			*/
  *(void **) &tramp[4] = ffi_closure_osf;

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

  /* Flush the Icache.

     Tru64 UNIX as doesn't understand the imb mnemonic, so use call_pal
     instead, since both Compaq as and gas can handle it.

     0x86 is PAL_imb in Tru64 UNIX <alpha/pal.h>.  */
  asm volatile ("call_pal 0x86" : : : "memory");

  return FFI_OK;
}

int
ffi_closure_osf_inner(ffi_closure *closure, void *rvalue, unsigned long *argp)
{
  ffi_cif *cif;
  void **avalue;
  ffi_type **arg_types;
  long i, avn, argn;

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

  argn = 0;

  /* Copy the caller's structure return address to that the closure
     returns the data directly to the caller.  */
  if (cif->flags == FFI_TYPE_STRUCT)
    {
      rvalue = (void *) argp[0];
      argn = 1;
    }

  i = 0;
  avn = cif->nargs;
  arg_types = cif->arg_types;
  
  /* Grab the addresses of the arguments from the stack frame.  */
  while (i < avn)
    {
      switch (arg_types[i]->type)
	{
	case FFI_TYPE_SINT8:
	case FFI_TYPE_UINT8:
	case FFI_TYPE_SINT16:
	case FFI_TYPE_UINT16:
	case FFI_TYPE_SINT32:
	case FFI_TYPE_UINT32:
	case FFI_TYPE_SINT64:
	case FFI_TYPE_UINT64:
	case FFI_TYPE_POINTER:
	case FFI_TYPE_STRUCT:
	  avalue[i] = &argp[argn];
	  break;

	case FFI_TYPE_FLOAT:
	  if (argn < 6)
	    {
	      /* Floats coming from registers need conversion from double
	         back to float format.  */
	      *(float *)&argp[argn - 6] = *(double *)&argp[argn - 6];
	      avalue[i] = &argp[argn - 6];
	    }
	  else
	    avalue[i] = &argp[argn];
	  break;

	case FFI_TYPE_DOUBLE:
	  avalue[i] = &argp[argn - (argn < 6 ? 6 : 0)];
	  break;

	default:
	  FFI_ASSERT(0);
	}

      argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
      i++;
    }

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

  /* Tell ffi_closure_osf how to perform return type promotions.  */
  return cif->rtype->type;
}

--- NEW FILE: ffitarget.h ---
/* -----------------------------------------------------------------*-C-*-
   ffitarget.h - Copyright (c) 1996-2003  Red Hat, Inc.
   Target configuration macros for Alpha.

   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_OSF,
  FFI_DEFAULT_ABI = FFI_OSF,
  FFI_LAST_ABI = FFI_DEFAULT_ABI + 1
} ffi_abi;
#endif

/* ---- Definitions for closures ----------------------------------------- */

#define FFI_CLOSURES 1
#define FFI_TRAMPOLINE_SIZE 24
#define FFI_NATIVE_RAW_API 0

#endif