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/* -----------------------------------------------------------------------
   ffi.c - Copyright (c) 1996, 2003, 2004 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 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>
 
 
/* ffi_prep_args is called by the assembly routine once stack space
   has been allocated for the function's arguments */
 
void ffi_prep_args_v8(char *stack, extended_cif *ecif)
{
  int i;
  void **p_argv;
  char *argp;
  ffi_type **p_arg;
 
  /* Skip 16 words for the window save area */
  argp = stack + 16*sizeof(int);
 
  /* This should only really be done when we are returning a structure,
     however, it's faster just to do it all the time...
 
  if ( ecif->cif->rtype->type == FFI_TYPE_STRUCT ) */
  *(int *) argp = (long)ecif->rvalue;
 
  /* And 1 word for the  structure return value. */
  argp += sizeof(int);
 
#ifdef USING_PURIFY
  /* Purify will probably complain in our assembly routine, unless we
     zero out this memory. */
 
  ((int*)argp)[0] = 0;
  ((int*)argp)[1] = 0;
  ((int*)argp)[2] = 0;
  ((int*)argp)[3] = 0;
  ((int*)argp)[4] = 0;
  ((int*)argp)[5] = 0;
#endif
 
  p_argv = ecif->avalue;
 
  for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types; i; i--, p_arg++)
    {
      size_t z;
 
          if ((*p_arg)->type == FFI_TYPE_STRUCT
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
              || (*p_arg)->type == FFI_TYPE_LONGDOUBLE
#endif
              )
            {
              *(unsigned int *) argp = (unsigned long)(* p_argv);
              z = sizeof(int);
            }
          else
            {
              z = (*p_arg)->size;
              if (z < sizeof(int))
                {
                  z = sizeof(int);
                  switch ((*p_arg)->type)
                    {
                    case FFI_TYPE_SINT8:
                      *(signed int *) argp = *(SINT8 *)(* p_argv);
                      break;
 
                    case FFI_TYPE_UINT8:
                      *(unsigned int *) argp = *(UINT8 *)(* p_argv);
                      break;
 
                    case FFI_TYPE_SINT16:
                      *(signed int *) argp = *(SINT16 *)(* p_argv);
                      break;
 
                    case FFI_TYPE_UINT16:
                      *(unsigned int *) argp = *(UINT16 *)(* p_argv);
                      break;
 
                    default:
                      FFI_ASSERT(0);
                    }
                }
              else
                {
                  memcpy(argp, *p_argv, z);
                }
            }
          p_argv++;
          argp += z;
    }
 
  return;
}
 
int ffi_prep_args_v9(char *stack, extended_cif *ecif)
{
  int i, ret = 0;
  int tmp;
  void **p_argv;
  char *argp;
  ffi_type **p_arg;
 
  tmp = 0;
 
  /* Skip 16 words for the window save area */
  argp = stack + 16*sizeof(long long);
 
#ifdef USING_PURIFY
  /* Purify will probably complain in our assembly routine, unless we
     zero out this memory. */
 
  ((long long*)argp)[0] = 0;
  ((long long*)argp)[1] = 0;
  ((long long*)argp)[2] = 0;
  ((long long*)argp)[3] = 0;
  ((long long*)argp)[4] = 0;
  ((long long*)argp)[5] = 0;
#endif
 
  p_argv = ecif->avalue;
 
  if (ecif->cif->rtype->type == FFI_TYPE_STRUCT &&
      ecif->cif->rtype->size > 32)
    {
      *(unsigned long long *) argp = (unsigned long)ecif->rvalue;
      argp += sizeof(long long);
      tmp = 1;
    }
 
  for (i = 0, p_arg = ecif->cif->arg_types; i < ecif->cif->nargs;
       i++, p_arg++)
    {
      size_t z;
 
      z = (*p_arg)->size;
      switch ((*p_arg)->type)
        {
        case FFI_TYPE_STRUCT:
          if (z > 16)
            {
              /* For structures larger than 16 bytes we pass reference.  */
              *(unsigned long long *) argp = (unsigned long)* p_argv;
              argp += sizeof(long long);
              tmp++;
              p_argv++;
              continue;
            }
          /* FALLTHROUGH */
        case FFI_TYPE_FLOAT:
        case FFI_TYPE_DOUBLE:
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
        case FFI_TYPE_LONGDOUBLE:
#endif
          ret = 1; /* We should promote into FP regs as well as integer.  */
          break;
        }
      if (z < sizeof(long long))
        {
          switch ((*p_arg)->type)
            {
            case FFI_TYPE_SINT8:
              *(signed long long *) argp = *(SINT8 *)(* p_argv);
              break;
 
            case FFI_TYPE_UINT8:
              *(unsigned long long *) argp = *(UINT8 *)(* p_argv);
              break;
 
            case FFI_TYPE_SINT16:
              *(signed long long *) argp = *(SINT16 *)(* p_argv);
              break;
 
            case FFI_TYPE_UINT16:
              *(unsigned long long *) argp = *(UINT16 *)(* p_argv);
              break;
 
            case FFI_TYPE_SINT32:
              *(signed long long *) argp = *(SINT32 *)(* p_argv);
              break;
 
            case FFI_TYPE_UINT32:
              *(unsigned long long *) argp = *(UINT32 *)(* p_argv);
              break;
 
            case FFI_TYPE_FLOAT:
              *(float *) (argp + 4) = *(FLOAT32 *)(* p_argv); /* Right justify */
              break;
 
            case FFI_TYPE_STRUCT:
              memcpy(argp, *p_argv, z);
              break;
 
            default:
              FFI_ASSERT(0);
            }
          z = sizeof(long long);
          tmp++;
        }
      else if (z == sizeof(long long))
        {
          memcpy(argp, *p_argv, z);
          z = sizeof(long long);
          tmp++;
        }
      else
        {
          if ((tmp & 1) && (*p_arg)->alignment > 8)
            {
              tmp++;
              argp += sizeof(long long);
            }
          memcpy(argp, *p_argv, z);
          z = 2 * sizeof(long long);
          tmp += 2;
        }
      p_argv++;
      argp += z;
    }
 
  return ret;
}
 
/* Perform machine dependent cif processing */
ffi_status ffi_prep_cif_machdep(ffi_cif *cif)
{
  int wordsize;
 
  if (cif->abi != FFI_V9)
    {
      wordsize = 4;
 
      /* If we are returning a struct, this will already have been added.
         Otherwise we need to add it because it's always got to be there! */
 
      if (cif->rtype->type != FFI_TYPE_STRUCT)
        cif->bytes += wordsize;
 
      /* sparc call frames require that space is allocated for 6 args,
         even if they aren't used. Make that space if necessary. */
 
      if (cif->bytes < 4*6+4)
        cif->bytes = 4*6+4;
    }
  else
    {
      wordsize = 8;
 
      /* sparc call frames require that space is allocated for 6 args,
         even if they aren't used. Make that space if necessary. */
 
      if (cif->bytes < 8*6)
        cif->bytes = 8*6;
    }
 
  /* Adjust cif->bytes. to include 16 words for the window save area,
     and maybe the struct/union return pointer area, */
 
  cif->bytes += 16 * wordsize;
 
  /* The stack must be 2 word aligned, so round bytes up
     appropriately. */
 
  cif->bytes = ALIGN(cif->bytes, 2 * wordsize);
 
  /* Set the return type flag */
  switch (cif->rtype->type)
    {
    case FFI_TYPE_VOID:
    case FFI_TYPE_FLOAT:
    case FFI_TYPE_DOUBLE:
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
    case FFI_TYPE_LONGDOUBLE:
#endif
      cif->flags = cif->rtype->type;
      break;
 
    case FFI_TYPE_STRUCT:
      if (cif->abi == FFI_V9 && cif->rtype->size > 32)
        cif->flags = FFI_TYPE_VOID;
      else
        cif->flags = FFI_TYPE_STRUCT;
      break;
 
    case FFI_TYPE_SINT64:
    case FFI_TYPE_UINT64:
      if (cif->abi != FFI_V9)
        {
          cif->flags = FFI_TYPE_SINT64;
          break;
        }
      /* FALLTHROUGH */
    default:
      cif->flags = FFI_TYPE_INT;
      break;
    }
  return FFI_OK;
}
 
int ffi_v9_layout_struct(ffi_type *arg, int off, char *ret, char *intg, char *flt)
{
  ffi_type **ptr = &arg->elements[0];
 
  while (*ptr != NULL)
    {
      if (off & ((*ptr)->alignment - 1))
        off = ALIGN(off, (*ptr)->alignment);
 
      switch ((*ptr)->type)
        {
        case FFI_TYPE_STRUCT:
          off = ffi_v9_layout_struct(*ptr, off, ret, intg, flt);
          off = ALIGN(off, FFI_SIZEOF_ARG);
          break;
        case FFI_TYPE_FLOAT:
        case FFI_TYPE_DOUBLE:
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
        case FFI_TYPE_LONGDOUBLE:
#endif
          memmove(ret + off, flt + off, (*ptr)->size);
          off += (*ptr)->size;
          break;
        default:
          memmove(ret + off, intg + off, (*ptr)->size);
          off += (*ptr)->size;
          break;
        }
      ptr++;
    }
  return off;
}
 
 
#ifdef SPARC64
extern int ffi_call_v9(void *, extended_cif *, unsigned,
                       unsigned, unsigned *, void (*fn)());
#else
extern int ffi_call_v8(void *, extended_cif *, unsigned,
                       unsigned, unsigned *, void (*fn)());
#endif
 
void ffi_call(ffi_cif *cif, void (*fn)(), void *rvalue, void **avalue)
{
  extended_cif ecif;
  void *rval = rvalue;
 
  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                     */
 
  ecif.rvalue = rvalue;
  if (cif->rtype->type == FFI_TYPE_STRUCT)
    {
      if (cif->rtype->size <= 32)
        rval = alloca(64);
      else
        {
          rval = NULL;
          if (rvalue == NULL)
            ecif.rvalue = alloca(cif->rtype->size);
        }
    }
 
  switch (cif->abi)
    {
    case FFI_V8:
#ifdef SPARC64
      /* We don't yet support calling 32bit code from 64bit */
      FFI_ASSERT(0);
#else
      ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,
                  cif->flags, rvalue, fn);
#endif
      break;
    case FFI_V9:
#ifdef SPARC64
      ffi_call_v9(ffi_prep_args_v9, &ecif, cif->bytes,
                  cif->flags, rval, fn);
      if (rvalue && rval && cif->rtype->type == FFI_TYPE_STRUCT)
        ffi_v9_layout_struct(cif->rtype, 0, (char *)rvalue, (char *)rval, ((char *)rval)+32);
#else
      /* And vice versa */
      FFI_ASSERT(0);
#endif
      break;
    default:
      FFI_ASSERT(0);
      break;
    }
 
}
 
 
#ifdef SPARC64
extern void ffi_closure_v9(void);
#else
extern void ffi_closure_v8(void);
#endif
 
ffi_status
ffi_prep_closure (ffi_closure* closure,
                  ffi_cif* cif,
                  void (*fun)(ffi_cif*, void*, void**, void*),
                  void *user_data)
{
  unsigned int *tramp = (unsigned int *) &closure->tramp[0];
  unsigned long fn;
#ifdef SPARC64
  /* Trampoline address is equal to the closure address.  We take advantage
     of that to reduce the trampoline size by 8 bytes. */
  FFI_ASSERT (cif->abi == FFI_V9);
  fn = (unsigned long) ffi_closure_v9;
  tramp[0] = 0x83414000; /* rd   %pc, %g1        */
  tramp[1] = 0xca586010;        /* ldx  [%g1+16], %g5   */
  tramp[2] = 0x81c14000;        /* jmp  %g5             */
  tramp[3] = 0x01000000;        /* nop                  */
  *((unsigned long *) &tramp[4]) = fn;
#else
  unsigned long ctx = (unsigned long) closure;
  FFI_ASSERT (cif->abi == FFI_V8);
  fn = (unsigned long) ffi_closure_v8;
  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)  */
#endif
 
  closure->cif = cif;
  closure->fun = fun;
  closure->user_data = user_data;
 
  /* Flush the Icache.  FIXME: alignment isn't certain, assume 8 bytes */
#ifdef SPARC64
  asm volatile ("flush  %0" : : "r" (closure) : "memory");
  asm volatile ("flush  %0" : : "r" (((char *) closure) + 8) : "memory");
#else
  asm volatile ("iflush %0" : : "r" (closure) : "memory");
  asm volatile ("iflush %0" : : "r" (((char *) closure) + 8) : "memory");
#endif
 
  return FFI_OK;
}
 
int
ffi_closure_sparc_inner_v8(ffi_closure *closure,
  void *rvalue, unsigned long *gpr, unsigned long *scratch)
{
  ffi_cif *cif;
  ffi_type **arg_types;
  void **avalue;
  int i, argn;
 
  cif = closure->cif;
  arg_types = cif->arg_types;
  avalue = alloca(cif->nargs * sizeof(void *));
 
  /* Copy the caller's structure return address so that the closure
     returns the data directly to the caller.  */
  if (cif->flags == FFI_TYPE_STRUCT
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE  
      || cif->flags == FFI_TYPE_LONGDOUBLE
#endif
     )
    rvalue = (void *) gpr[0];
 
  /* Always skip the structure return address.  */
  argn = 1;
 
  /* Grab the addresses of the arguments from the stack frame.  */
  for (i = 0; i < cif->nargs; i++)
    {
      if (arg_types[i]->type == FFI_TYPE_STRUCT
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
          || arg_types[i]->type == FFI_TYPE_LONGDOUBLE
#endif
         )
        {
          /* Straight copy of invisible reference.  */
          avalue[i] = (void *)gpr[argn++];
        }
      else if ((arg_types[i]->type == FFI_TYPE_DOUBLE
               || arg_types[i]->type == FFI_TYPE_SINT64
               || arg_types[i]->type == FFI_TYPE_UINT64)
               /* gpr is 8-byte aligned.  */
               && (argn % 2) != 0)
        {
          /* Align on a 8-byte boundary.  */
          scratch[0] = gpr[argn];
          scratch[1] = gpr[argn+1];
          avalue[i] = scratch;
          scratch -= 2;
          argn += 2;
        }
      else
        {
          /* Always right-justify.  */
          argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
          avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;
        }
    }
 
  /* Invoke the closure.  */
  (closure->fun) (cif, rvalue, avalue, closure->user_data);
 
  /* Tell ffi_closure_sparc how to perform return type promotions.  */
  return cif->rtype->type;
}
 
int
ffi_closure_sparc_inner_v9(ffi_closure *closure,
  void *rvalue, unsigned long *gpr, double *fpr)
{
  ffi_cif *cif;
  ffi_type **arg_types;
  void **avalue;
  int i, argn, fp_slot_max;
 
  cif = closure->cif;
  arg_types = cif->arg_types;
  avalue = alloca(cif->nargs * sizeof(void *));
 
  /* Copy the caller's structure return address so that the closure
     returns the data directly to the caller.  */
  if (cif->flags == FFI_TYPE_VOID
      && cif->rtype->type == FFI_TYPE_STRUCT)
    {
      rvalue = (void *) gpr[0];
      /* Skip the structure return address.  */
      argn = 1;
    }
  else
    argn = 0;
 
  fp_slot_max = 16 - argn;
 
  /* Grab the addresses of the arguments from the stack frame.  */
  for (i = 0; i < cif->nargs; i++)
    {
      if (arg_types[i]->type == FFI_TYPE_STRUCT)
        {
          if (arg_types[i]->size > 16)
            {
              /* Straight copy of invisible reference.  */
              avalue[i] = (void *)gpr[argn++];
            }
          else
            {
              /* Left-justify.  */
              ffi_v9_layout_struct(arg_types[i],
                                   0,
                                   (char *) &gpr[argn],
                                   (char *) &gpr[argn],
                                   (char *) &fpr[argn]);
              avalue[i] = &gpr[argn];
              argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
            }
        }
      else
        {
          /* Right-justify.  */
          argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;
 
          if (i < fp_slot_max
              && (arg_types[i]->type == FFI_TYPE_FLOAT
                  || arg_types[i]->type == FFI_TYPE_DOUBLE
#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE
                  || arg_types[i]->type == FFI_TYPE_LONGDOUBLE
#endif
                  ))
            avalue[i] = ((char *) &fpr[argn]) - arg_types[i]->size;
          else
            avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;
        }
    }
 
  /* Invoke the closure.  */
  (closure->fun) (cif, rvalue, avalue, closure->user_data);
 
  /* Tell ffi_closure_sparc how to perform return type promotions.  */
  return cif->rtype->type;
}

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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [libffi/] [src/] [sparc/] [ffi.c] - Blame information for rev 22

Line No.	Rev	Author	Line
1	14	jlechner	`/* -----------------------------------------------------------------------`
2			`ffi.c - Copyright (c) 1996, 2003, 2004 Red Hat, Inc.`
3
4			`SPARC Foreign Function Interface`
5
6			`Permission is hereby granted, free of charge, to any person obtaining`
7			`a copy of this software and associated documentation files (the`
8			``Software''), to deal in the Software without restriction, including
9			`without limitation the rights to use, copy, modify, merge, publish,`
10			`distribute, sublicense, and/or sell copies of the Software, and to`
11			`permit persons to whom the Software is furnished to do so, subject to`
12			`the following conditions:`
13
14			`The above copyright notice and this permission notice shall be included`
15			`in all copies or substantial portions of the Software.`
16
17			THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, EXPRESS
18			`OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF`
19			`MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.`
20			`IN NO EVENT SHALL CYGNUS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR`
21			`OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,`
22			`ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR`
23			`OTHER DEALINGS IN THE SOFTWARE.`
24			`----------------------------------------------------------------------- */`
25
26			`#include <ffi.h>`
27			`#include <ffi_common.h>`
28
29			`#include <stdlib.h>`
30
31
32			`/* ffi_prep_args is called by the assembly routine once stack space`
33			`has been allocated for the function's arguments */`
34
35			`void ffi_prep_args_v8(char stack, extended_cif ecif)`
36			`{`
37			`int i;`
38			`void **p_argv;`
39			`char *argp;`
40			`ffi_type **p_arg;`
41
42			`/* Skip 16 words for the window save area */`
43			`argp = stack + 16*sizeof(int);`
44
45			`/* This should only really be done when we are returning a structure,`
46			`however, it's faster just to do it all the time...`
47
48			`if ( ecif->cif->rtype->type == FFI_TYPE_STRUCT ) */`
49			`(int ) argp = (long)ecif->rvalue;`
50
51			`/* And 1 word for the structure return value. */`
52			`argp += sizeof(int);`
53
54			`#ifdef USING_PURIFY`
55			`/* Purify will probably complain in our assembly routine, unless we`
56			`zero out this memory. */`
57
58			`((int*)argp)[0] = 0;`
59			`((int*)argp)[1] = 0;`
60			`((int*)argp)[2] = 0;`
61			`((int*)argp)[3] = 0;`
62			`((int*)argp)[4] = 0;`
63			`((int*)argp)[5] = 0;`
64			`#endif`
65
66			`p_argv = ecif->avalue;`
67
68			`for (i = ecif->cif->nargs, p_arg = ecif->cif->arg_types; i; i--, p_arg++)`
69			`{`
70			`size_t z;`
71
72			`if ((*p_arg)->type == FFI_TYPE_STRUCT`
73			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
74			`\|\| (*p_arg)->type == FFI_TYPE_LONGDOUBLE`
75			`#endif`
76			`)`
77			`{`
78			`(unsigned int ) argp = (unsigned long)(* p_argv);`
79			`z = sizeof(int);`
80			`}`
81			`else`
82			`{`
83			`z = (*p_arg)->size;`
84			`if (z < sizeof(int))`
85			`{`
86			`z = sizeof(int);`
87			`switch ((*p_arg)->type)`
88			`{`
89			`case FFI_TYPE_SINT8:`
90			`(signed int ) argp = (SINT8 )(* p_argv);`
91			`break;`
92
93			`case FFI_TYPE_UINT8:`
94			`(unsigned int ) argp = (UINT8 )(* p_argv);`
95			`break;`
96
97			`case FFI_TYPE_SINT16:`
98			`(signed int ) argp = (SINT16 )(* p_argv);`
99			`break;`
100
101			`case FFI_TYPE_UINT16:`
102			`(unsigned int ) argp = (UINT16 )(* p_argv);`
103			`break;`
104
105			`default:`
106			`FFI_ASSERT(0);`
107			`}`
108			`}`
109			`else`
110			`{`
111			`memcpy(argp, *p_argv, z);`
112			`}`
113			`}`
114			`p_argv++;`
115			`argp += z;`
116			`}`
117
118			`return;`
119			`}`
120
121			`int ffi_prep_args_v9(char stack, extended_cif ecif)`
122			`{`
123			`int i, ret = 0;`
124			`int tmp;`
125			`void **p_argv;`
126			`char *argp;`
127			`ffi_type **p_arg;`
128
129			`tmp = 0;`
130
131			`/* Skip 16 words for the window save area */`
132			`argp = stack + 16*sizeof(long long);`
133
134			`#ifdef USING_PURIFY`
135			`/* Purify will probably complain in our assembly routine, unless we`
136			`zero out this memory. */`
137
138			`((long long*)argp)[0] = 0;`
139			`((long long*)argp)[1] = 0;`
140			`((long long*)argp)[2] = 0;`
141			`((long long*)argp)[3] = 0;`
142			`((long long*)argp)[4] = 0;`
143			`((long long*)argp)[5] = 0;`
144			`#endif`
145
146			`p_argv = ecif->avalue;`
147
148			`if (ecif->cif->rtype->type == FFI_TYPE_STRUCT &&`
149			`ecif->cif->rtype->size > 32)`
150			`{`
151			`(unsigned long long ) argp = (unsigned long)ecif->rvalue;`
152			`argp += sizeof(long long);`
153			`tmp = 1;`
154			`}`
155
156			`for (i = 0, p_arg = ecif->cif->arg_types; i < ecif->cif->nargs;`
157			`i++, p_arg++)`
158			`{`
159			`size_t z;`
160
161			`z = (*p_arg)->size;`
162			`switch ((*p_arg)->type)`
163			`{`
164			`case FFI_TYPE_STRUCT:`
165			`if (z > 16)`
166			`{`
167			`/* For structures larger than 16 bytes we pass reference. */`
168			`(unsigned long long ) argp = (unsigned long)* p_argv;`
169			`argp += sizeof(long long);`
170			`tmp++;`
171			`p_argv++;`
172			`continue;`
173			`}`
174			`/* FALLTHROUGH */`
175			`case FFI_TYPE_FLOAT:`
176			`case FFI_TYPE_DOUBLE:`
177			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
178			`case FFI_TYPE_LONGDOUBLE:`
179			`#endif`
180			`ret = 1; /* We should promote into FP regs as well as integer. */`
181			`break;`
182			`}`
183			`if (z < sizeof(long long))`
184			`{`
185			`switch ((*p_arg)->type)`
186			`{`
187			`case FFI_TYPE_SINT8:`
188			`(signed long long ) argp = (SINT8 )(* p_argv);`
189			`break;`
190
191			`case FFI_TYPE_UINT8:`
192			`(unsigned long long ) argp = (UINT8 )(* p_argv);`
193			`break;`
194
195			`case FFI_TYPE_SINT16:`
196			`(signed long long ) argp = (SINT16 )(* p_argv);`
197			`break;`
198
199			`case FFI_TYPE_UINT16:`
200			`(unsigned long long ) argp = (UINT16 )(* p_argv);`
201			`break;`
202
203			`case FFI_TYPE_SINT32:`
204			`(signed long long ) argp = (SINT32 )(* p_argv);`
205			`break;`
206
207			`case FFI_TYPE_UINT32:`
208			`(unsigned long long ) argp = (UINT32 )(* p_argv);`
209			`break;`
210
211			`case FFI_TYPE_FLOAT:`
212			`(float ) (argp + 4) = (FLOAT32 )(* p_argv); /* Right justify */`
213			`break;`
214
215			`case FFI_TYPE_STRUCT:`
216			`memcpy(argp, *p_argv, z);`
217			`break;`
218
219			`default:`
220			`FFI_ASSERT(0);`
221			`}`
222			`z = sizeof(long long);`
223			`tmp++;`
224			`}`
225			`else if (z == sizeof(long long))`
226			`{`
227			`memcpy(argp, *p_argv, z);`
228			`z = sizeof(long long);`
229			`tmp++;`
230			`}`
231			`else`
232			`{`
233			`if ((tmp & 1) && (*p_arg)->alignment > 8)`
234			`{`
235			`tmp++;`
236			`argp += sizeof(long long);`
237			`}`
238			`memcpy(argp, *p_argv, z);`
239			`z = 2 * sizeof(long long);`
240			`tmp += 2;`
241			`}`
242			`p_argv++;`
243			`argp += z;`
244			`}`
245
246			`return ret;`
247			`}`
248
249			`/* Perform machine dependent cif processing */`
250			`ffi_status ffi_prep_cif_machdep(ffi_cif *cif)`
251			`{`
252			`int wordsize;`
253
254			`if (cif->abi != FFI_V9)`
255			`{`
256			`wordsize = 4;`
257
258			`/* If we are returning a struct, this will already have been added.`
259			`Otherwise we need to add it because it's always got to be there! */`
260
261			`if (cif->rtype->type != FFI_TYPE_STRUCT)`
262			`cif->bytes += wordsize;`
263
264			`/* sparc call frames require that space is allocated for 6 args,`
265			`even if they aren't used. Make that space if necessary. */`
266
267			`if (cif->bytes < 4*6+4)`
268			`cif->bytes = 4*6+4;`
269			`}`
270			`else`
271			`{`
272			`wordsize = 8;`
273
274			`/* sparc call frames require that space is allocated for 6 args,`
275			`even if they aren't used. Make that space if necessary. */`
276
277			`if (cif->bytes < 8*6)`
278			`cif->bytes = 8*6;`
279			`}`
280
281			`/* Adjust cif->bytes. to include 16 words for the window save area,`
282			`and maybe the struct/union return pointer area, */`
283
284			`cif->bytes += 16 * wordsize;`
285
286			`/* The stack must be 2 word aligned, so round bytes up`
287			`appropriately. */`
288
289			`cif->bytes = ALIGN(cif->bytes, 2 * wordsize);`
290
291			`/* Set the return type flag */`
292			`switch (cif->rtype->type)`
293			`{`
294			`case FFI_TYPE_VOID:`
295			`case FFI_TYPE_FLOAT:`
296			`case FFI_TYPE_DOUBLE:`
297			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
298			`case FFI_TYPE_LONGDOUBLE:`
299			`#endif`
300			`cif->flags = cif->rtype->type;`
301			`break;`
302
303			`case FFI_TYPE_STRUCT:`
304			`if (cif->abi == FFI_V9 && cif->rtype->size > 32)`
305			`cif->flags = FFI_TYPE_VOID;`
306			`else`
307			`cif->flags = FFI_TYPE_STRUCT;`
308			`break;`
309
310			`case FFI_TYPE_SINT64:`
311			`case FFI_TYPE_UINT64:`
312			`if (cif->abi != FFI_V9)`
313			`{`
314			`cif->flags = FFI_TYPE_SINT64;`
315			`break;`
316			`}`
317			`/* FALLTHROUGH */`
318			`default:`
319			`cif->flags = FFI_TYPE_INT;`
320			`break;`
321			`}`
322			`return FFI_OK;`
323			`}`
324
325			`int ffi_v9_layout_struct(ffi_type arg, int off, char ret, char intg, char flt)`
326			`{`
327			`ffi_type **ptr = &arg->elements[0];`
328
329			`while (*ptr != NULL)`
330			`{`
331			`if (off & ((*ptr)->alignment - 1))`
332			`off = ALIGN(off, (*ptr)->alignment);`
333
334			`switch ((*ptr)->type)`
335			`{`
336			`case FFI_TYPE_STRUCT:`
337			`off = ffi_v9_layout_struct(*ptr, off, ret, intg, flt);`
338			`off = ALIGN(off, FFI_SIZEOF_ARG);`
339			`break;`
340			`case FFI_TYPE_FLOAT:`
341			`case FFI_TYPE_DOUBLE:`
342			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
343			`case FFI_TYPE_LONGDOUBLE:`
344			`#endif`
345			`memmove(ret + off, flt + off, (*ptr)->size);`
346			`off += (*ptr)->size;`
347			`break;`
348			`default:`
349			`memmove(ret + off, intg + off, (*ptr)->size);`
350			`off += (*ptr)->size;`
351			`break;`
352			`}`
353			`ptr++;`
354			`}`
355			`return off;`
356			`}`
357
358
359			`#ifdef SPARC64`
360			`extern int ffi_call_v9(void , extended_cif , unsigned,`
361			`unsigned, unsigned , void (fn)());`
362			`#else`
363			`extern int ffi_call_v8(void , extended_cif , unsigned,`
364			`unsigned, unsigned , void (fn)());`
365			`#endif`
366
367			`void ffi_call(ffi_cif cif, void (fn)(), void rvalue, void *avalue)`
368			`{`
369			`extended_cif ecif;`
370			`void *rval = rvalue;`
371
372			`ecif.cif = cif;`
373			`ecif.avalue = avalue;`
374
375			`/* If the return value is a struct and we don't have a return */`
376			`/* value address then we need to make one */`
377
378			`ecif.rvalue = rvalue;`
379			`if (cif->rtype->type == FFI_TYPE_STRUCT)`
380			`{`
381			`if (cif->rtype->size <= 32)`
382			`rval = alloca(64);`
383			`else`
384			`{`
385			`rval = NULL;`
386			`if (rvalue == NULL)`
387			`ecif.rvalue = alloca(cif->rtype->size);`
388			`}`
389			`}`
390
391			`switch (cif->abi)`
392			`{`
393			`case FFI_V8:`
394			`#ifdef SPARC64`
395			`/* We don't yet support calling 32bit code from 64bit */`
396			`FFI_ASSERT(0);`
397			`#else`
398			`ffi_call_v8(ffi_prep_args_v8, &ecif, cif->bytes,`
399			`cif->flags, rvalue, fn);`
400			`#endif`
401			`break;`
402			`case FFI_V9:`
403			`#ifdef SPARC64`
404			`ffi_call_v9(ffi_prep_args_v9, &ecif, cif->bytes,`
405			`cif->flags, rval, fn);`
406			`if (rvalue && rval && cif->rtype->type == FFI_TYPE_STRUCT)`
407			`ffi_v9_layout_struct(cif->rtype, 0, (char )rvalue, (char )rval, ((char *)rval)+32);`
408			`#else`
409			`/* And vice versa */`
410			`FFI_ASSERT(0);`
411			`#endif`
412			`break;`
413			`default:`
414			`FFI_ASSERT(0);`
415			`break;`
416			`}`
417
418			`}`
419
420
421			`#ifdef SPARC64`
422			`extern void ffi_closure_v9(void);`
423			`#else`
424			`extern void ffi_closure_v8(void);`
425			`#endif`
426
427			`ffi_status`
428			`ffi_prep_closure (ffi_closure* closure,`
429			`ffi_cif* cif,`
430			`void (fun)(ffi_cif, void, void, void),`
431			`void *user_data)`
432			`{`
433			`unsigned int tramp = (unsigned int ) &closure->tramp[0];`
434			`unsigned long fn;`
435			`#ifdef SPARC64`
436			`/* Trampoline address is equal to the closure address. We take advantage`
437			`of that to reduce the trampoline size by 8 bytes. */`
438			`FFI_ASSERT (cif->abi == FFI_V9);`
439			`fn = (unsigned long) ffi_closure_v9;`
440			`tramp[0] = 0x83414000; /* rd %pc, %g1 */`
441			`tramp[1] = 0xca586010; /* ldx [%g1+16], %g5 */`
442			`tramp[2] = 0x81c14000; /* jmp %g5 */`
443			`tramp[3] = 0x01000000; /* nop */`
444			`((unsigned long ) &tramp[4]) = fn;`
445			`#else`
446			`unsigned long ctx = (unsigned long) closure;`
447			`FFI_ASSERT (cif->abi == FFI_V8);`
448			`fn = (unsigned long) ffi_closure_v8;`
449			`tramp[0] = 0x03000000 \| fn >> 10; /* sethi %hi(fn), %g1 */`
450			`tramp[1] = 0x05000000 \| ctx >> 10; /* sethi %hi(ctx), %g2 */`
451			`tramp[2] = 0x81c06000 \| (fn & 0x3ff); /* jmp %g1+%lo(fn) */`
452			`tramp[3] = 0x8410a000 \| (ctx & 0x3ff);/* or %g2, %lo(ctx) */`
453			`#endif`
454
455			`closure->cif = cif;`
456			`closure->fun = fun;`
457			`closure->user_data = user_data;`
458
459			`/* Flush the Icache. FIXME: alignment isn't certain, assume 8 bytes */`
460			`#ifdef SPARC64`
461			`asm volatile ("flush %0" : : "r" (closure) : "memory");`
462			`asm volatile ("flush %0" : : "r" (((char *) closure) + 8) : "memory");`
463			`#else`
464			`asm volatile ("iflush %0" : : "r" (closure) : "memory");`
465			`asm volatile ("iflush %0" : : "r" (((char *) closure) + 8) : "memory");`
466			`#endif`
467
468			`return FFI_OK;`
469			`}`
470
471			`int`
472			`ffi_closure_sparc_inner_v8(ffi_closure *closure,`
473			`void rvalue, unsigned long gpr, unsigned long *scratch)`
474			`{`
475			`ffi_cif *cif;`
476			`ffi_type **arg_types;`
477			`void **avalue;`
478			`int i, argn;`
479
480			`cif = closure->cif;`
481			`arg_types = cif->arg_types;`
482			`avalue = alloca(cif->nargs * sizeof(void *));`
483
484			`/* Copy the caller's structure return address so that the closure`
485			`returns the data directly to the caller. */`
486			`if (cif->flags == FFI_TYPE_STRUCT`
487			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
488			`\|\| cif->flags == FFI_TYPE_LONGDOUBLE`
489			`#endif`
490			`)`
491			`rvalue = (void *) gpr[0];`
492
493			`/* Always skip the structure return address. */`
494			`argn = 1;`
495
496			`/* Grab the addresses of the arguments from the stack frame. */`
497			`for (i = 0; i < cif->nargs; i++)`
498			`{`
499			`if (arg_types[i]->type == FFI_TYPE_STRUCT`
500			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
501			`\|\| arg_types[i]->type == FFI_TYPE_LONGDOUBLE`
502			`#endif`
503			`)`
504			`{`
505			`/* Straight copy of invisible reference. */`
506			`avalue[i] = (void *)gpr[argn++];`
507			`}`
508			`else if ((arg_types[i]->type == FFI_TYPE_DOUBLE`
509			`\|\| arg_types[i]->type == FFI_TYPE_SINT64`
510			`\|\| arg_types[i]->type == FFI_TYPE_UINT64)`
511			`/* gpr is 8-byte aligned. */`
512			`&& (argn % 2) != 0)`
513			`{`
514			`/* Align on a 8-byte boundary. */`
515			`scratch[0] = gpr[argn];`
516			`scratch[1] = gpr[argn+1];`
517			`avalue[i] = scratch;`
518			`scratch -= 2;`
519			`argn += 2;`
520			`}`
521			`else`
522			`{`
523			`/* Always right-justify. */`
524			`argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;`
525			`avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;`
526			`}`
527			`}`
528
529			`/* Invoke the closure. */`
530			`(closure->fun) (cif, rvalue, avalue, closure->user_data);`
531
532			`/* Tell ffi_closure_sparc how to perform return type promotions. */`
533			`return cif->rtype->type;`
534			`}`
535
536			`int`
537			`ffi_closure_sparc_inner_v9(ffi_closure *closure,`
538			`void rvalue, unsigned long gpr, double *fpr)`
539			`{`
540			`ffi_cif *cif;`
541			`ffi_type **arg_types;`
542			`void **avalue;`
543			`int i, argn, fp_slot_max;`
544
545			`cif = closure->cif;`
546			`arg_types = cif->arg_types;`
547			`avalue = alloca(cif->nargs * sizeof(void *));`
548
549			`/* Copy the caller's structure return address so that the closure`
550			`returns the data directly to the caller. */`
551			`if (cif->flags == FFI_TYPE_VOID`
552			`&& cif->rtype->type == FFI_TYPE_STRUCT)`
553			`{`
554			`rvalue = (void *) gpr[0];`
555			`/* Skip the structure return address. */`
556			`argn = 1;`
557			`}`
558			`else`
559			`argn = 0;`
560
561			`fp_slot_max = 16 - argn;`
562
563			`/* Grab the addresses of the arguments from the stack frame. */`
564			`for (i = 0; i < cif->nargs; i++)`
565			`{`
566			`if (arg_types[i]->type == FFI_TYPE_STRUCT)`
567			`{`
568			`if (arg_types[i]->size > 16)`
569			`{`
570			`/* Straight copy of invisible reference. */`
571			`avalue[i] = (void *)gpr[argn++];`
572			`}`
573			`else`
574			`{`
575			`/* Left-justify. */`
576			`ffi_v9_layout_struct(arg_types[i],`
577			`0,`
578			`(char *) &gpr[argn],`
579			`(char *) &gpr[argn],`
580			`(char *) &fpr[argn]);`
581			`avalue[i] = &gpr[argn];`
582			`argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;`
583			`}`
584			`}`
585			`else`
586			`{`
587			`/* Right-justify. */`
588			`argn += ALIGN(arg_types[i]->size, FFI_SIZEOF_ARG) / FFI_SIZEOF_ARG;`
589
590			`if (i < fp_slot_max`
591			`&& (arg_types[i]->type == FFI_TYPE_FLOAT`
592			`\|\| arg_types[i]->type == FFI_TYPE_DOUBLE`
593			`#if FFI_TYPE_LONGDOUBLE != FFI_TYPE_DOUBLE`
594			`\|\| arg_types[i]->type == FFI_TYPE_LONGDOUBLE`
595			`#endif`
596			`))`
597			`avalue[i] = ((char *) &fpr[argn]) - arg_types[i]->size;`
598			`else`
599			`avalue[i] = ((char *) &gpr[argn]) - arg_types[i]->size;`
600			`}`
601			`}`
602
603			`/* Invoke the closure. */`
604			`(closure->fun) (cif, rvalue, avalue, closure->user_data);`
605
606			`/* Tell ffi_closure_sparc how to perform return type promotions. */`
607			`return cif->rtype->type;`
608			`}`