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binutils-gdb/gdb/scm-valprint.c
Fred Fish b607efe714 See gdb ChangeLog entry with header: 
Thu Jul 25 19:41:31 1996  Fred Fish  <fnf@cygnus.com>

for a rather huge set of changes.  I was going to put them here, but it
made cvs dump core.  :-(
1996-07-26 03:01:51 +00:00

422 lines
9.8 KiB
C
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/* Scheme/Guile language support routines for GDB, the GNU debugger.
Copyright 1995 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "value.h"
#include "scm-lang.h"
#include "valprint.h"
#include "gdbcore.h"
/* FIXME: Should be in a header file that we import. */
extern int
c_val_print PARAMS ((struct type *, char *, CORE_ADDR, GDB_FILE *, int, int,
int, enum val_prettyprint));
static void scm_ipruk PARAMS ((char *, LONGEST, GDB_FILE *));
static void scm_scmlist_print PARAMS ((LONGEST, GDB_FILE *, int, int,
int, enum val_prettyprint));
static int scm_inferior_print PARAMS ((LONGEST, GDB_FILE *, int, int,
int, enum val_prettyprint));
/* Prints the SCM value VALUE by invoking the inferior, if appropraite.
Returns >= 0 on succes; retunr -1 if the inferior cannot/should not
print VALUE. */
static int
scm_inferior_print (value, stream, format, deref_ref, recurse, pretty)
LONGEST value;
GDB_FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
return -1;
}
/* {Names of immediate symbols}
* This table must agree with the declarations in scm.h: {Immediate Symbols}.*/
static char *scm_isymnames[] =
{
/* This table must agree with the declarations */
"and",
"begin",
"case",
"cond",
"do",
"if",
"lambda",
"let",
"let*",
"letrec",
"or",
"quote",
"set!",
"define",
#if 0
"literal-variable-ref",
"literal-variable-set!",
#endif
"apply",
"call-with-current-continuation",
/* user visible ISYMS */
/* other keywords */
/* Flags */
"#f",
"#t",
"#<undefined>",
"#<eof>",
"()",
"#<unspecified>"
};
static void
scm_scmlist_print (svalue, stream, format, deref_ref, recurse, pretty)
LONGEST svalue;
GDB_FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
unsigned int more = print_max;
if (recurse > 6)
{
fputs_filtered ("...", stream);
return;
}
scm_scmval_print (SCM_CAR (svalue), stream, format,
deref_ref, recurse + 1, pretty);
svalue = SCM_CDR (svalue);
for (; SCM_NIMP (svalue); svalue = SCM_CDR (svalue))
{
if (SCM_NECONSP (svalue))
break;
fputs_filtered (" ", stream);
if (--more == 0)
{
fputs_filtered ("...", stream);
return;
}
scm_scmval_print (SCM_CAR (svalue), stream, format,
deref_ref, recurse + 1, pretty);
}
if (SCM_NNULLP (svalue))
{
fputs_filtered (" . ", stream);
scm_scmval_print (svalue, stream, format,
deref_ref, recurse + 1, pretty);
}
}
static void
scm_ipruk (hdr, ptr, stream)
char *hdr;
LONGEST ptr;
GDB_FILE *stream;
{
fprintf_filtered (stream, "#<unknown-%s", hdr);
#define SCM_SIZE TYPE_LENGTH (builtin_type_scm)
if (SCM_CELLP (ptr))
fprintf_filtered (stream, " (0x%lx . 0x%lx) @",
(long) SCM_CAR (ptr), (long) SCM_CDR (ptr));
fprintf_filtered (stream, " 0x%x>", ptr);
}
void
scm_scmval_print (svalue, stream, format, deref_ref, recurse, pretty)
LONGEST svalue;
GDB_FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
taloop:
switch (7 & svalue)
{
case 2:
case 6:
print_longest (stream, format ? format : 'd', 1, svalue >> 2);
break;
case 4:
if (SCM_ICHRP (svalue))
{
svalue = SCM_ICHR (svalue);
scm_printchar (svalue, stream);
break;
}
else if (SCM_IFLAGP (svalue)
&& (SCM_ISYMNUM (svalue)
< (sizeof scm_isymnames / sizeof (char *))))
{
fputs_filtered (SCM_ISYMCHARS (svalue), stream);
break;
}
else if (SCM_ILOCP (svalue))
{
fprintf_filtered (stream, "#@%ld%c%ld",
(long) SCM_IFRAME (svalue),
SCM_ICDRP (svalue) ? '-' : '+',
(long) SCM_IDIST (svalue));
break;
}
else
goto idef;
break;
case 1:
/* gloc */
svalue = SCM_CAR (svalue - 1);
goto taloop;
default:
idef:
scm_ipruk ("immediate", svalue, stream);
break;
case 0:
switch (SCM_TYP7 (svalue))
{
case scm_tcs_cons_gloc:
if (SCM_CDR (SCM_CAR (svalue) - 1L) == 0)
{
#if 0
SCM name;
#endif
fputs_filtered ("#<latte ", stream);
#if 1
fputs_filtered ("???", stream);
#else
name = ((SCM n*)(STRUCT_TYPE( exp)))[struct_i_name];
scm_lfwrite (CHARS (name),
(sizet) sizeof (char),
(sizet) LENGTH (name),
port);
#endif
fprintf_filtered (stream, " #X%lX>", svalue);
break;
}
case scm_tcs_cons_imcar:
case scm_tcs_cons_nimcar:
fputs_filtered ("(", stream);
scm_scmlist_print (svalue, stream, format,
deref_ref, recurse + 1, pretty);
fputs_filtered (")", stream);
break;
case scm_tcs_closures:
fputs_filtered ("#<CLOSURE ", stream);
scm_scmlist_print (SCM_CODE (svalue), stream, format,
deref_ref, recurse + 1, pretty);
fputs_filtered (">", stream);
break;
case scm_tc7_string:
{
int len = SCM_LENGTH (svalue);
CORE_ADDR addr = (CORE_ADDR) SCM_CDR (svalue);
int i;
int done = 0;
int buf_size;
char buffer[64];
int truncate = print_max && len > (int) print_max;
if (truncate)
len = print_max;
fputs_filtered ("\"", stream);
for (; done < len; done += buf_size)
{
buf_size = min (len - done, 64);
read_memory (addr + done, buffer, buf_size);
for (i = 0; i < buf_size; ++i)
switch (buffer[i])
{
case '\"':
case '\\':
fputs_filtered ("\\", stream);
default:
fprintf_filtered (stream, "%c", buffer[i]);
}
}
fputs_filtered (truncate ? "...\"" : "\"", stream);
break;
}
break;
case scm_tcs_symbols:
{
int len = SCM_LENGTH (svalue);
char * str = (char*) alloca (len);
read_memory (SCM_CDR (svalue), str, len + 1);
/* Should handle weird characters FIXME */
str[len] = '\0';
fputs_filtered (str, stream);
break;
}
case scm_tc7_vector:
{
int len = SCM_LENGTH (svalue);
int i;
LONGEST elements = SCM_CDR(svalue);
fputs_filtered ("#(", stream);
for (i = 0; i < len; ++i)
{
if (i > 0)
fputs_filtered (" ", stream);
scm_scmval_print (scm_get_field (elements, i), stream, format,
deref_ref, recurse + 1, pretty);
}
fputs_filtered (")", stream);
}
break;
#if 0
case tc7_lvector:
{
SCM result;
SCM hook;
hook = scm_get_lvector_hook (exp, LV_PRINT_FN);
if (hook == BOOL_F)
{
scm_puts ("#<locked-vector ", port);
scm_intprint(CDR(exp), 16, port);
scm_puts (">", port);
}
else
{
result
= scm_apply (hook,
scm_listify (exp, port, (writing ? BOOL_T : BOOL_F),
SCM_UNDEFINED),
EOL);
if (result == BOOL_F)
goto punk;
}
break;
}
break;
case tc7_bvect:
case tc7_ivect:
case tc7_uvect:
case tc7_fvect:
case tc7_dvect:
case tc7_cvect:
scm_raprin1 (exp, port, writing);
break;
#endif
case scm_tcs_subrs:
{
int index = SCM_CAR (svalue) >> 8;
#if 1
char str[20];
sprintf (str, "#%d", index);
#else
char *str = index ? SCM_CHARS (scm_heap_org+index) : "";
#define SCM_CHARS(x) ((char *)(SCM_CDR(x)))
char *str = CHARS (SNAME (exp));
#endif
fprintf_filtered (stream, "#<primitive-procedure %s>",
str);
}
break;
#if 0
#ifdef CCLO
case tc7_cclo:
scm_puts ("#<compiled-closure ", port);
scm_iprin1 (CCLO_SUBR (exp), port, writing);
scm_putc ('>', port);
break;
#endif
case tc7_contin:
fprintf_filtered (stream, "#<continuation %d @ #X%lx >",
LENGTH (svalue),
(long) CHARS (svalue));
break;
case tc7_port:
i = PTOBNUM (exp);
if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
break;
goto punk;
case tc7_smob:
i = SMOBNUM (exp);
if (i < scm_numsmob && scm_smobs[i].print
&& (scm_smobs[i].print) (exp, port, writing))
break;
goto punk;
#endif
default:
#if 0
punk:
#endif
scm_ipruk ("type", svalue, stream);
}
break;
}
}
int
scm_val_print (type, valaddr, address, stream, format, deref_ref, recurse,
pretty)
struct type *type;
char *valaddr;
CORE_ADDR address;
GDB_FILE *stream;
int format;
int deref_ref;
int recurse;
enum val_prettyprint pretty;
{
if (is_scmvalue_type (type))
{
LONGEST svalue = extract_signed_integer (valaddr, TYPE_LENGTH (type));
if (scm_inferior_print (svalue, stream, format,
deref_ref, recurse, pretty) >= 0)
{
}
else
{
scm_scmval_print (svalue, stream, format,
deref_ref, recurse, pretty);
}
gdb_flush (stream);
return (0);
}
else
{
return c_val_print (type, valaddr, address, stream, format,
deref_ref, recurse, pretty);
}
}
int
scm_value_print (val, stream, format, pretty)
value_ptr val;
GDB_FILE *stream;
int format;
enum val_prettyprint pretty;
{
return (val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
}
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