mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-04-29 19:30:36 +02:00
Code Activity

add foreign value wrapper

Browse source 
* libguile/foreign.h:
* libguile/foreign.c: New files, implementing simple wrappers around
  foreign values, such as those that one might link in dynamically from
  a library.

* libguile/tags.h (scm_tc7_foreign): Take a tc7 for foreign values.

* libguile.h:
* libguile/init.c: Add foreign.h to headers and init.

* libguile/print.c (iprin1): Add printer for foreign values.

* libguile/gc.c (scm_i_tag_name): Case for foreign values.
* libguile/goops.c (scm_class_of, create_standard_classes): Add a class
  for foreign values.

* libguile/evalext.c (scm_self_evaluating_p): Add case for foreign
  values.

* libguile/Makefile.am: Add foreign.[ch] to the build.
This commit is contained in:
Andy Wingo 2010-01-04 12:11:33 +01:00
parent 208fae8a0e
commit e2c2a6994d
10 changed files with 401 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

3
libguile.h
View file

@ -1,7 +1,7 @@
#ifndef SCM_LIBGUILE_H
#define SCM_LIBGUILE_H
/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -50,6 +50,7 @@ extern "C" {
#include "libguile/feature.h"
#include "libguile/filesys.h"
#include "libguile/fluids.h"
#include "libguile/foreign.h"
#include "libguile/fports.h"
#include "libguile/gc.h"
#include "libguile/gdbint.h"

6
libguile/Makefile.am
View file

@ -1,6 +1,6 @@
## Process this file with Automake to create Makefile.in
##
## Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
## Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
##
## This file is part of GUILE.
##
@ -129,6 +129,7 @@ libguile_la_SOURCES = \
extensions.c \
feature.c \
fluids.c \
foreign.c \
fports.c \
frames.c \
gc-malloc.c \
@ -230,6 +231,7 @@ DOT_X_FILES = \
extensions.x \
feature.x \
fluids.x \
foreign.x \
fports.x \
gc-malloc.x \
gc.x \
@ -328,6 +330,7 @@ DOT_DOC_FILES = \
extensions.doc \
feature.doc \
fluids.doc \
foreign.doc \
fports.doc \
gc-malloc.doc \
gc.doc \
@ -487,6 +490,7 @@ modinclude_HEADERS = \
feature.h \
filesys.h \
fluids.h \
foreign.h \
fports.h \
frames.h \
gc.h \

3
libguile/evalext.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1998,1999,2000,2001,2002,2003, 2006, 2008, 2009 Free Software Foundation, Inc.
/* Copyright (C) 1998,1999,2000,2001,2002,2003, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -77,6 +77,7 @@ SCM_DEFINE (scm_self_evaluating_p, "self-evaluating?", 1, 0, 0,
{
case scm_tc7_vector:
case scm_tc7_wvect:
case scm_tc7_foreign:
case scm_tc7_hashtable:
case scm_tc7_fluid:
case scm_tc7_dynamic_state:

288
libguile/foreign.c Normal file
View file

@ -0,0 +1,288 @@
/* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include "_scm.h"
#include "foreign.h"
static size_t
sizeof_type (scm_t_foreign_type type)
{
switch (type)
{
case SCM_FOREIGN_TYPE_VOID: abort ();
case SCM_FOREIGN_TYPE_FLOAT: return sizeof(float);
case SCM_FOREIGN_TYPE_DOUBLE: return sizeof(double);
case SCM_FOREIGN_TYPE_UINT8: return sizeof(scm_t_uint8);
case SCM_FOREIGN_TYPE_INT8: return sizeof(scm_t_int8);
case SCM_FOREIGN_TYPE_UINT16: return sizeof(scm_t_uint16);
case SCM_FOREIGN_TYPE_INT16: return sizeof(scm_t_int16);
case SCM_FOREIGN_TYPE_UINT32: return sizeof(scm_t_uint32);
case SCM_FOREIGN_TYPE_INT32: return sizeof(scm_t_int32);
case SCM_FOREIGN_TYPE_UINT64: return sizeof(scm_t_uint64);
case SCM_FOREIGN_TYPE_INT64: return sizeof(scm_t_int64);
case SCM_FOREIGN_TYPE_STRUCT: abort ();
case SCM_FOREIGN_TYPE_POINTER: return sizeof(void*);
default: abort ();
}
}
static void
foreign_finalizer_trampoline (GC_PTR ptr, GC_PTR data)
{
scm_t_foreign_finalizer finalizer = data;
finalizer (SCM_FOREIGN_OBJECT (PTR2SCM (ptr), void*));
}
SCM
scm_c_from_foreign (scm_t_foreign_type type, void *val, size_t size,
scm_t_foreign_finalizer finalizer)
{
void *ret;
if (!size)
size = sizeof_type (type);
ret = scm_gc_malloc_pointerless (sizeof (scm_t_bits) * 2 + size, "foreign");
SCM_SET_CELL_WORD_0 (PTR2SCM (ret), scm_tc7_foreign | (type<<8));
/* set SCM_FOREIGN_OBJECT to point to the third word of the object, which will
be 8-byte aligned. Then copy *val into that space. */
SCM_SET_CELL_WORD_1 (PTR2SCM (ret),
(scm_t_bits)SCM_CELL_OBJECT_LOC (PTR2SCM (ret), 2));
memcpy (SCM_FOREIGN_OBJECT (PTR2SCM (ret), void), val, size);
if (finalizer)
{
/* Register a finalizer for the newly created instance. */
GC_finalization_proc prev_finalizer;
GC_PTR prev_finalizer_data;
GC_REGISTER_FINALIZER_NO_ORDER (ret,
foreign_finalizer_trampoline,
finalizer,
&prev_finalizer,
&prev_finalizer_data);
}
return PTR2SCM (ret);
}
SCM
scm_c_take_foreign (scm_t_foreign_type type, void *val,
scm_t_foreign_finalizer finalizer)
{
void *ret;
ret = scm_gc_malloc_pointerless (sizeof (scm_t_bits) * 2, "foreign");
SCM_SET_CELL_WORD_0 (PTR2SCM (ret), scm_tc7_foreign | (type<<8));
/* Set SCM_FOREIGN_OBJECT to the given pointer. */
SCM_SET_CELL_WORD_1 (PTR2SCM (ret), (scm_t_bits)val);
if (finalizer)
{
/* Register a finalizer for the newly created instance. */
GC_finalization_proc prev_finalizer;
GC_PTR prev_finalizer_data;
GC_REGISTER_FINALIZER_NO_ORDER (ret,
foreign_finalizer_trampoline,
finalizer,
&prev_finalizer,
&prev_finalizer_data);
}
return PTR2SCM (ret);
}
SCM_DEFINE (scm_foreign_ref, "foreign-ref", 1, 0, 0,
(SCM foreign),
"Reference the foreign value wrapped by @var{foreign}.\n\n"
"Note that only \"simple\" types may be referenced by this\n"
"function. See @code{foreign-struct-ref} or @code{foreign-pointer-ref}\n"
"for structs or pointers, respectively.")
#define FUNC_NAME s_scm_foreign_ref
{
SCM_VALIDATE_FOREIGN_SIMPLE (1, foreign);
switch (SCM_FOREIGN_TYPE (foreign))
{
case SCM_FOREIGN_TYPE_FLOAT:
return scm_from_double (SCM_FOREIGN_OBJECT_REF (foreign, float));
case SCM_FOREIGN_TYPE_DOUBLE:
return scm_from_double (SCM_FOREIGN_OBJECT_REF (foreign, double));
case SCM_FOREIGN_TYPE_UINT8:
return scm_from_uint8 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_uint8));
case SCM_FOREIGN_TYPE_INT8:
return scm_from_int8 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_int8));
case SCM_FOREIGN_TYPE_UINT16:
return scm_from_uint16 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_uint16));
case SCM_FOREIGN_TYPE_INT16:
return scm_from_int16 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_int16));
case SCM_FOREIGN_TYPE_UINT32:
return scm_from_uint32 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_uint32));
case SCM_FOREIGN_TYPE_INT32:
return scm_from_int32 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_int32));
case SCM_FOREIGN_TYPE_UINT64:
return scm_from_uint64 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_uint64));
case SCM_FOREIGN_TYPE_INT64:
return scm_from_int64 (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_int64));
case SCM_FOREIGN_TYPE_VOID:
case SCM_FOREIGN_TYPE_STRUCT:
case SCM_FOREIGN_TYPE_POINTER:
default:
/* other cases should have been caught by the FOREIGN_SIMPLE check */
abort ();
}
}
#undef FUNC_NAME
SCM_DEFINE (scm_foreign_set_x, "foreign-set!", 2, 0, 0,
(SCM foreign, SCM val),
"Set the foreign value wrapped by @var{foreign}.\n\n"
"Note that only \"simple\" types may be set by this function.\n"
"See @code{foreign-struct-ref} or @code{foreign-pointer-ref} for\n"
"structs or pointers, respectively.")
#define FUNC_NAME s_scm_foreign_set_x
{
SCM_VALIDATE_FOREIGN_SIMPLE (1, foreign);
switch (SCM_FOREIGN_TYPE (foreign))
{
case SCM_FOREIGN_TYPE_FLOAT:
SCM_FOREIGN_OBJECT_SET (foreign, float, scm_to_double (val));
break;
case SCM_FOREIGN_TYPE_DOUBLE:
SCM_FOREIGN_OBJECT_SET (foreign, double, scm_to_double (val));
break;
case SCM_FOREIGN_TYPE_UINT8:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_uint8, scm_to_uint8 (val));
break;
case SCM_FOREIGN_TYPE_INT8:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_int8, scm_to_int8 (val));
break;
case SCM_FOREIGN_TYPE_UINT16:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_uint16, scm_to_uint16 (val));
break;
case SCM_FOREIGN_TYPE_INT16:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_int16, scm_to_int16 (val));
break;
case SCM_FOREIGN_TYPE_UINT32:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_uint32, scm_to_uint32 (val));
break;
case SCM_FOREIGN_TYPE_INT32:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_int32, scm_to_int32 (val));
break;
case SCM_FOREIGN_TYPE_UINT64:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_uint64, scm_to_uint64 (val));
break;
case SCM_FOREIGN_TYPE_INT64:
SCM_FOREIGN_OBJECT_SET (foreign, scm_t_int64, scm_to_int64 (val));
break;
case SCM_FOREIGN_TYPE_VOID:
case SCM_FOREIGN_TYPE_STRUCT:
case SCM_FOREIGN_TYPE_POINTER:
default:
/* other cases should have been caught by the FOREIGN_SIMPLE check */
abort ();
}
return SCM_UNSPECIFIED;
}
#undef FUNC_NAME
void
scm_i_foreign_print (SCM foreign, SCM port, scm_print_state *pstate)
{
scm_puts ("#<foreign ", port);
switch (SCM_FOREIGN_TYPE (foreign))
{
case SCM_FOREIGN_TYPE_VOID:
abort ();
case SCM_FOREIGN_TYPE_FLOAT:
scm_puts ("float ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_DOUBLE:
scm_puts ("double ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_UINT8:
scm_puts ("uint8 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_INT8:
scm_puts ("int8 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_UINT16:
scm_puts ("uint16 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_INT16:
scm_puts ("int16 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_UINT32:
scm_puts ("uint32 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_INT32:
scm_puts ("int32 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_UINT64:
scm_puts ("uint64 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_INT64:
scm_puts ("int64 ", port);
scm_display (scm_foreign_ref (foreign), port);
break;
case SCM_FOREIGN_TYPE_STRUCT:
scm_puts ("struct at 0x", port);
scm_uintprint (SCM_CELL_WORD_1 (foreign), 16, port);
break;
case SCM_FOREIGN_TYPE_POINTER:
scm_puts ("pointer 0x", port);
scm_uintprint (SCM_FOREIGN_OBJECT_REF (foreign, scm_t_bits), 16, port);
break;
default:
abort ();
}
scm_putc ('>', port);
}
void
scm_init_foreign (void)
{
#ifndef SCM_MAGIC_SNARFER
#include "libguile/foreign.x"
#endif
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/

87
libguile/foreign.h Normal file
View file

@ -0,0 +1,87 @@
/* Copyright (C) 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef SCM_FOREIGN_H
#define SCM_FOREIGN_H
/* A subset of libffi's types. */
typedef enum
{
SCM_FOREIGN_TYPE_VOID,
SCM_FOREIGN_TYPE_FLOAT,
SCM_FOREIGN_TYPE_DOUBLE,
SCM_FOREIGN_TYPE_UINT8,
SCM_FOREIGN_TYPE_INT8,
SCM_FOREIGN_TYPE_UINT16,
SCM_FOREIGN_TYPE_INT16,
SCM_FOREIGN_TYPE_UINT32,
SCM_FOREIGN_TYPE_INT32,
SCM_FOREIGN_TYPE_UINT64,
SCM_FOREIGN_TYPE_INT64,
SCM_FOREIGN_TYPE_STRUCT,
SCM_FOREIGN_TYPE_POINTER
} scm_t_foreign_type;
typedef void (*scm_t_foreign_finalizer) (void *);
#define SCM_FOREIGN_P(x) \
(!SCM_IMP (x) && SCM_TYP7(x) == scm_tc7_foreign)
#define SCM_VALIDATE_FOREIGN(pos, x) \
SCM_MAKE_VALIDATE (pos, x, FOREIGN_P)
#define SCM_FOREIGN_TYPE(x) \
((scm_t_foreign_type)((SCM_CELL_WORD_0 (x) >> 8)&0xff))
#define SCM_FOREIGN_OBJECT(x, ctype) \
((ctype*)SCM_CELL_OBJECT_1 (x))
#define SCM_FOREIGN_OBJECT_REF(x, ctype) \
(*SCM_FOREIGN_OBJECT (x, ctype))
#define SCM_FOREIGN_OBJECT_SET(x, ctype, val) \
(*SCM_FOREIGN_OBJECT (x, ctype) = (val))
#define SCM_FOREIGN_TYPED_P(x, type) \
(SCM_FOREIGN_P (x) && SCM_FOREIGN_TYPE (x) == SCM_FOREIGN_TYPE_##type)
#define SCM_VALIDATE_FOREIGN_TYPED(pos, x, type) \
do { \
SCM_ASSERT_TYPE (SCM_FOREIGN_TYPED_P (x, type), x, pos, FUNC_NAME, \
"FOREIGN_"#type"_P"); \
} while (0)
#define SCM_FOREIGN_SIMPLE_P(x) \
(SCM_FOREIGN_P (x) \
&& SCM_FOREIGN_TYPE (x) != SCM_FOREIGN_TYPE_VOID \
&& SCM_FOREIGN_TYPE (x) != SCM_FOREIGN_TYPE_STRUCT \
&& SCM_FOREIGN_TYPE (x) != SCM_FOREIGN_TYPE_POINTER)
#define SCM_VALIDATE_FOREIGN_SIMPLE(pos, x) \
SCM_MAKE_VALIDATE (pos, x, FOREIGN_SIMPLE_P)
SCM_API SCM scm_c_from_foreign (scm_t_foreign_type type, void *val, size_t size,
scm_t_foreign_finalizer finalizer);
SCM_API SCM scm_c_take_foreign (scm_t_foreign_type type, void *val,
scm_t_foreign_finalizer finalizer);
SCM_API SCM scm_foreign_ref (SCM foreign);
SCM_API SCM scm_foreign_set_x (SCM foreign, SCM val);
SCM_INTERNAL void scm_i_foreign_print (SCM foreign, SCM port,
scm_print_state *pstate);
SCM_INTERNAL void scm_init_foreign (void);
#endif /* SCM_FOREIGN_H */

4
libguile/gc.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -748,6 +748,8 @@ scm_i_tag_name (scm_t_bits tag)
return "cons (immediate car)";
case scm_tcs_cons_nimcar:
return "cons (non-immediate car)";
case scm_tc7_foreign:
return "foreign";
case scm_tc7_hashtable:
return "hashtable";
case scm_tc7_fluid:

7
libguile/goops.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009
/* Copyright (C) 1998,1999,2000,2001,2002,2003,2004,2008,2009,2010
* Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
@ -157,6 +157,7 @@ SCM scm_class_protected_hidden, scm_class_protected_opaque, scm_class_protected_
SCM scm_class_scm;
SCM scm_class_int, scm_class_float, scm_class_double;
static SCM class_foreign;
static SCM class_hashtable;
static SCM class_fluid;
static SCM class_dynamic_state;
@ -213,6 +214,8 @@ SCM_DEFINE (scm_class_of, "class-of", 1, 0, 0,
case scm_tc7_vector:
case scm_tc7_wvect:
return scm_class_vector;
case scm_tc7_foreign:
return class_foreign;
case scm_tc7_hashtable:
return class_hashtable;
case scm_tc7_fluid:
@ -2394,6 +2397,8 @@ create_standard_classes (void)
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&scm_class_vector, "<vector>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_foreign, "<foreign>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_hashtable, "<hashtable>",
scm_class_class, scm_class_top, SCM_EOL);
make_stdcls (&class_fluid, "<fluid>",

3
libguile/init.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2009 Free Software Foundation, Inc.
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001, 2002, 2003, 2004, 2006, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -474,6 +474,7 @@ scm_i_init_guile (SCM_STACKITEM *base)
scm_init_ports ();
scm_init_hash ();
scm_init_hashtab ();
scm_init_foreign ();
scm_init_deprecation ();
scm_init_objprop ();
scm_init_promises (); /* requires smob_prehistory */

5
libguile/print.c
View file

@ -1,4 +1,4 @@
/* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
/* Copyright (C) 1995-1999,2000,2001, 2002, 2003, 2004, 2006, 2008, 2009, 2010 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
@ -708,6 +708,9 @@ iprin1 (SCM exp, SCM port, scm_print_state *pstate)
case scm_tc7_program:
scm_i_program_print (exp, port, pstate);
break;
case scm_tc7_foreign:
scm_i_foreign_print (exp, port, pstate);
break;
case scm_tc7_hashtable:
scm_i_hashtable_print (exp, port, pstate);
break;

4
libguile/tags.h
View file

@ -3,7 +3,7 @@
#ifndef SCM_TAGS_H
#define SCM_TAGS_H
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2008,2009
/* Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004,2008,2009,2010
* Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
@ -411,7 +411,7 @@ typedef scm_t_uintptr scm_t_bits;
#define scm_tc7_stringbuf 39
#define scm_tc7_bytevector 77
#define scm_tc7_unused_1 31
#define scm_tc7_foreign 31
#define scm_tc7_hashtable 29
#define scm_tc7_fluid 37
#define scm_tc7_dynamic_state 45