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* scm-lang.c: Moved Scheme value printing code to ... 

* scm-valprint.c:  ... this new file.
	Also major improvements in support for printing SCM values.
	* scm-lang.h:  New file.
	* scm-tags.h:  New file.
	* Makefile.in:  Note new scm-valprint.{c,o}.
This commit is contained in:
Per Bothner 1995-09-30 23:36:40 +00:00
parent 66efdff907
commit 5b4d668a82
7 changed files with 874 additions and 150 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
gdb/.Sanitize
View File

@ -287,6 +287,9 @@ rs6000-tdep.c
rom68k-rom.c
saber.suppress
scm-lang.c
scm-lang.h
scm-tags.h
scm-valprint.c
ser-e7kpc.c
ser-go32.c
ser-mac.c

9
gdb/ChangeLog
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@ -1,3 +1,12 @@
Sat Sep 30 16:13:36 1995 Per Bothner <bothner@kalessin.cygnus.com>
* scm-lang.c: Moved Scheme value printing code to ...
* scm-valprint.c: ... this new file.
Also major improvements in support for printing SCM values.
* scm-lang.h: New file.
* scm-tags.h: New file.
* Makefile.in: Note new scm-valprint.{c,o}.
Sat Sep 30 09:35:02 1995 Jason Molenda (crash@phydeaux.cygnus.com)
* configure.in: X_INCDIR and X_LIBDIR added.

4
gdb/Makefile.in
View File

@ -355,7 +355,7 @@ SFILES = blockframe.c breakpoint.c buildsym.c callback.c c-exp.y c-lang.c \
gdbtypes.c infcmd.c inflow.c infrun.c language.c \
m2-exp.y m2-lang.c m2-typeprint.c m2-valprint.c main.c maint.c \
mem-break.c minsyms.c mipsread.c nlmread.c objfiles.c parse.c \
printcmd.c remote.c remote-nrom.c scm-lang.c \
printcmd.c remote.c remote-nrom.c scm-lang.c scm-valprint.c \
source.c stabsread.c stack.c symfile.c symmisc.c \
symtab.c target.c thread.c top.c \
typeprint.c utils.c valarith.c valops.c \
@ -466,7 +466,7 @@ COMMON_OBS = version.o blockframe.o breakpoint.o findvar.o stack.o thread.o \
exec.o objfiles.o minsyms.o maint.o demangle.o \
dbxread.o coffread.o elfread.o \
dwarfread.o mipsread.o stabsread.o core.o \
c-lang.o ch-lang.o f-lang.o m2-lang.o scm-lang.o \
c-lang.o ch-lang.o f-lang.o m2-lang.o scm-lang.o scm-valprint.o \
complaints.o typeprint.o \
c-typeprint.o ch-typeprint.o f-typeprint.o m2-typeprint.o \
c-valprint.o cp-valprint.o ch-valprint.o f-valprint.o m2-valprint.o \

174
gdb/scm-lang.c
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@ -23,8 +23,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "c-lang.h"
#include "value.h"
#include "c-lang.h"
#include "scm-lang.h"
#include "scm-tags.h"
extern struct type ** const (c_builtin_types[]);
extern value_ptr value_allocate_space_in_inferior PARAMS ((int));
@ -32,6 +34,8 @@ extern value_ptr find_function_in_inferior PARAMS ((char*));
static void scm_lreadr ();
struct type *SCM_TYPE = NULL;
static void
scm_read_token (c, weird)
int c;
@ -276,7 +280,7 @@ scm_parse ()
return 0;
}
static void
void
scm_printchar (c, stream)
int c;
GDB_FILE *stream;
@ -295,159 +299,33 @@ scm_printstr (stream, string, length, force_ellipses)
}
int
is_object_type (type)
is_scmvalue_type (type)
struct type *type;
{
/* FIXME - this should test for the SCM type, but we can't do that ! */
return TYPE_CODE (type) == TYPE_CODE_INT
&& TYPE_NAME (type)
#if 1
&& strcmp (TYPE_NAME (type), "SCM") == 0;
#else
&& TYPE_LENGTH (type) == TYPE_LENGTH (builtin_type_long)
&& strcmp (TYPE_NAME (type), "long int") == 0;
#endif
}
/* 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. */
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;
}
#define SCM_ITAG8_DATA(X) ((X)>>8)
#define SCM_ICHR(x) ((unsigned char)SCM_ITAG8_DATA(x))
#define SCM_ICHRP(x) (SCM_ITAG8(x) == scm_tc8_char)
#define scm_tc8_char 0xf4
#define SCM_IFLAGP(n) ((0x87 & (int)(n))==4)
#define SCM_ISYMNUM(n) ((int)((n)>>9))
#define SCM_ISYMCHARS(n) (scm_isymnames[SCM_ISYMNUM(n)])
#define SCM_ILOCP(n) ((0xff & (int)(n))==0xfc)
#define SCM_ITAG8(X) ((int)(X) & 0xff)
/* {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>"
};
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_object_type (type))
if (TYPE_CODE (type) == TYPE_CODE_INT
&& TYPE_NAME (type) && strcmp (TYPE_NAME (type), "SCM") == 0)
{
LONGEST svalue = unpack_long (type, valaddr);
if (scm_inferior_print (svalue, stream, format,
deref_ref, recurse, pretty) >= 0)
{
}
else
{
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))
{
#if 0
fputs_filtered ("#@", stream);
scm_intprint ((long) IFRAME (exp), 10, port);
scm_putc (ICDRP (exp) ? '-' : '+', port);
scm_intprint ((long) IDIST (exp), 10, port);
break;
#endif
}
default:
fprintf_filtered (stream, "#<%lX>", svalue);
}
}
gdb_flush (stream);
return (0);
}
else
{
return c_val_print (type, valaddr, address, stream, format,
deref_ref, recurse, pretty);
SCM_TYPE = type;
return 1;
}
return 0;
}
int
scm_value_print (val, stream, format, pretty)
value_ptr val;
GDB_FILE *stream;
int format;
enum val_prettyprint pretty;
/* Get the INDEX'th SCM value, assuming SVALUE is the address
of the 0'th one. */
LONGEST
scm_get_field (svalue, index)
LONGEST svalue;
int index;
{
return (val_print (VALUE_TYPE (val), VALUE_CONTENTS (val),
VALUE_ADDRESS (val), stream, format, 1, 0, pretty));
value_ptr val;
char buffer[20];
if (SCM_TYPE == NULL)
error ("internal error - no SCM type");
read_memory (SCM2PTR (svalue) + index * TYPE_LENGTH (SCM_TYPE),
buffer, TYPE_LENGTH (SCM_TYPE));
return unpack_long (SCM_TYPE, buffer);
}
static value_ptr

44
gdb/scm-lang.h Normal file
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@ -0,0 +1,44 @@
#define SICP
#include "scm-tags.h"
#undef SCM_NCELLP
#define SCM_NCELLP(x) ((SCM_SIZE-1) & (int)(x))
#define SCM_ITAG8_DATA(X) ((X)>>8)
#define SCM_ICHR(x) ((unsigned char)SCM_ITAG8_DATA(x))
#define SCM_ICHRP(x) (SCM_ITAG8(x) == scm_tc8_char)
#define scm_tc8_char 0xf4
#define SCM_IFLAGP(n) ((0x87 & (int)(n))==4)
#define SCM_ISYMNUM(n) ((int)((n)>>9))
#define SCM_ISYMCHARS(n) (scm_isymnames[SCM_ISYMNUM(n)])
#define SCM_ILOCP(n) ((0xff & (int)(n))==0xfc)
#define SCM_ITAG8(X) ((int)(X) & 0xff)
#define SCM_TYP7(x) (0x7f & (int)SCM_CAR(x))
#define SCM_LENGTH(x) (((unsigned long)SCM_CAR(x))>>8)
#define SCM_NCONSP(x) (1 & (int)SCM_CAR(x))
#define SCM_NECONSP(x) (SCM_NCONSP(x) && (1 != SCM_TYP3(x)))
#define SCM_CAR(x) scm_get_field (x, 0)
#define SCM_CDR(x) scm_get_field (x, 1)
#define SCM_VELTS(x) ((SCM *)SCM_CDR(x))
#define SCM_CLOSCAR(x) (SCM_CAR(x)-scm_tc3_closure)
#define SCM_CODE(x) SCM_CAR(SCM_CLOSCAR (x))
#ifdef __STDC__ /* Forward decls for prototypes */
struct value;
#endif
extern int scm_value_print PARAMS ((struct value *, GDB_FILE*,
int, enum val_prettyprint));
extern int scm_val_print PARAMS ((struct type*, char*, CORE_ADDR, GDB_FILE*,
int, int, int, enum val_prettyprint));
extern LONGEST scm_get_field PARAMS ((LONGEST, int));
extern int scm_scmval_print PARAMS ((LONGEST, GDB_FILE *,
int, int, int, enum val_prettyprint));
extern int is_scmvalue_type PARAMS ((struct type*));
extern void scm_printchar PARAMS ((int, GDB_FILE*));
struct type *SCM_TYPE;

385
gdb/scm-tags.h Normal file
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@ -0,0 +1,385 @@
/* This is a minimally edited version of Guile's tags.h. */
/* classes: h_files */
#ifndef TAGSH
#define TAGSH
/* Copyright (C) 1995 Free Software Foundation, Inc.
*
* 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, 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*/
/** This file defines the format of SCM values and cons pairs.
** It is here that tag bits are assigned for various purposes.
**/
/* Three Bit Tags
*
* 000 -- a non-immediate value. Points into the pair heap.
*
* 001 -- a gloc (i.e., a resolved global variable in a CAR in a code graph)
* or the CAR of an object handle (i.e., the tagged pointer to the
* vtable part of a user-defined object).
*
* If X has this tag, the value at CDAR(X - 1) distinguishes
* glocs from object handles. The distinction only needs
* to be made in a few places. Only a few parts of the code know
* about glocs. In most cases, when a value in the CAR of a pair
* has the tag 001, it means that the pair is an object handle.
*
* 010 -- the tag for immediate, exact integers.
*
* 011 -- in the CAR of a pair, this tag indicates that the pair is a closure.
* The remaining bits of the CAR are a pointer into the pair heap
* to the code graph for the closure.
*
* 1xy -- an extension tag which means that there is a five or six bit
* tag to the left of the low three bits. See the nice diagrams
* in ../doc/code.doc if you want to know what the bits mean.
*/
#define scm_tc3_cons 0
#define scm_tc3_cons_gloc 1
#define scm_tc3_closure 3
#define scm_tc7_ssymbol 5
#define scm_tc7_msymbol 7
#define scm_tc7_string 13
#define scm_tc7_bvect 15
#define scm_tc7_vector 21
#define scm_tc7_lvector 23
#define scm_tc7_ivect 29
#define scm_tc7_uvect 31
/* spare 37 39 */
#define scm_tc7_fvect 45
#define scm_tc7_dvect 47
#define scm_tc7_cvect 53
#define scm_tc7_port 55
#define scm_tc7_contin 61
#define scm_tc7_cclo 63
/* spare 69 71 77 79 */
#define scm_tc7_subr_0 85
#define scm_tc7_subr_1 87
#define scm_tc7_cxr 93
#define scm_tc7_subr_3 95
#define scm_tc7_subr_2 101
#define scm_tc7_asubr 103
#define scm_tc7_subr_1o 109
#define scm_tc7_subr_2o 111
#define scm_tc7_lsubr_2 117
#define scm_tc7_lsubr 119
#define scm_tc7_rpsubr 125
#define scm_tc7_smob 127
#define scm_tc_free_cell 127
#define scm_tc16_flo 0x017f
#define scm_tc_flo 0x017fL
#define SCM_REAL_PART (1L<<16)
#define SCM_IMAG_PART (2L<<16)
#define scm_tc_dblr (scm_tc16_flo|REAL_PART)
#define scm_tc_dblc (scm_tc16_flo|REAL_PART|IMAG_PART)
#define scm_tc16_bigpos 0x027f
#define scm_tc16_bigneg 0x037f
#define scm_tc16_fport (scm_tc7_port + 0*256L)
#define scm_tc16_pipe (scm_tc7_port + 1*256L)
#define scm_tc16_strport (scm_tc7_port + 2*256L)
#define scm_tc16_sfport (scm_tc7_port + 3*256L)
/* For cons pairs with immediate values in the CAR */
#define scm_tcs_cons_imcar 2:case 4:case 6:case 10:\
case 12:case 14:case 18:case 20:\
case 22:case 26:case 28:case 30:\
case 34:case 36:case 38:case 42:\
case 44:case 46:case 50:case 52:\
case 54:case 58:case 60:case 62:\
case 66:case 68:case 70:case 74:\
case 76:case 78:case 82:case 84:\
case 86:case 90:case 92:case 94:\
case 98:case 100:case 102:case 106:\
case 108:case 110:case 114:case 116:\
case 118:case 122:case 124:case 126
/* For cons pairs with non-immediate values in the CAR */
#define scm_tcs_cons_nimcar 0:case 8:case 16:case 24:\
case 32:case 40:case 48:case 56:\
case 64:case 72:case 80:case 88:\
case 96:case 104:case 112:case 120
/* A CONS_GLOC occurs in code. It's CAR is a pointer to the
* CDR of a variable. The low order bits of the CAR are 001.
* The CDR of the gloc is the code continuation.
*/
#define scm_tcs_cons_gloc 1:case 9:case 17:case 25:\
case 33:case 41:case 49:case 57:\
case 65:case 73:case 81:case 89:\
case 97:case 105:case 113:case 121
#define scm_tcs_closures 3:case 11:case 19:case 27:\
case 35:case 43:case 51:case 59:\
case 67:case 75:case 83:case 91:\
case 99:case 107:case 115:case 123
#define scm_tcs_subrs scm_tc7_asubr:case scm_tc7_subr_0:case scm_tc7_subr_1:case scm_tc7_cxr:\
case scm_tc7_subr_3:case scm_tc7_subr_2:case scm_tc7_rpsubr:case scm_tc7_subr_1o:\
case scm_tc7_subr_2o:case scm_tc7_lsubr_2:case scm_tc7_lsubr
#define scm_tcs_symbols scm_tc7_ssymbol:case scm_tc7_msymbol
#define scm_tcs_bignums tc16_bigpos:case tc16_bigneg
/* References to objects are of type SCM. Values may be non-immediate
* (pointers) or immediate (encoded, immutable, scalar values that fit
* in an SCM variable).
*/
typedef long SCM;
/* Cray machines have pointers that are incremented once for each word,
* rather than each byte, the 3 most significant bits encode the byte
* within the word. The following macros deal with this by storing the
* native Cray pointers like the ones that looks like scm expects. This
* is done for any pointers that might appear in the car of a scm_cell, pointers
* to scm_vector elts, functions, &c are not munged.
*/
#ifdef _UNICOS
# define SCM2PTR(x) ((int)(x) >> 3)
# define PTR2SCM(x) (((SCM)(x)) << 3)
# define SCM_POINTERS_MUNGED
#else
# define SCM2PTR(x) (x)
# define PTR2SCM(x) ((SCM)(x))
#endif /* def _UNICOS */
/* Immediate? Predicates
*/
#define SCM_IMP(x) (6 & (int)(x))
#define SCM_NIMP(x) (!SCM_IMP(x))
enum scm_tags
{
scm_tc8_char = 0xf4,
};
#define SCM_ITAG8(X) ((int)(X) & 0xff)
#define SCM_MAKE_ITAG8(X, TAG) (((X)<<8) + TAG)
#define SCM_ITAG8_DATA(X) ((X)>>8)
/* Local Environment Structure
*/
#define SCM_ILOCP(n) ((0xff & (int)(n))==0xfc)
#define SCM_ILOC00 (0x000000fcL)
#define SCM_IDINC (0x00100000L)
#define SCM_ICDR (0x00080000L)
#define SCM_IFRINC (0x00000100L)
#define SCM_IDSTMSK (-SCM_IDINC)
#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8))
#define SCM_IDIST(n) (((unsigned long)(n))>>20)
#define SCM_ICDRP(n) (SCM_ICDR & (n))
/* Immediate Symbols, Special Symbols, Flags (various constants).
*/
/* ISYMP tests for ISPCSYM and ISYM */
#define SCM_ISYMP(n) ((0x187 & (int)(n))==4)
/* IFLAGP tests for ISPCSYM, ISYM and IFLAG */
#define SCM_IFLAGP(n) ((0x87 & (int)(n))==4)
#define SCM_ISYMNUM(n) ((int)((n)>>9))
#define SCM_ISYMCHARS(n) (scm_isymnames[SCM_ISYMNUM(n)])
#define SCM_MAKSPCSYM(n) (((n)<<9)+((n)<<3)+4L)
#define SCM_MAKISYM(n) (((n)<<9)+0x74L)
#define SCM_MAKIFLAG(n) (((n)<<9)+0x174L)
/* This table must agree with the declarations
* in repl.c: {Names of immediate symbols}.
*
* These are used only in eval but their values
* have to be allocated here.
*
*/
#define SCM_IM_AND SCM_MAKSPCSYM(0)
#define SCM_IM_BEGIN SCM_MAKSPCSYM(1)
#define SCM_IM_CASE SCM_MAKSPCSYM(2)
#define SCM_IM_COND SCM_MAKSPCSYM(3)
#define SCM_IM_DO SCM_MAKSPCSYM(4)
#define SCM_IM_IF SCM_MAKSPCSYM(5)
#define SCM_IM_LAMBDA SCM_MAKSPCSYM(6)
#define SCM_IM_LET SCM_MAKSPCSYM(7)
#define SCM_IM_LETSTAR SCM_MAKSPCSYM(8)
#define SCM_IM_LETREC SCM_MAKSPCSYM(9)
#define SCM_IM_OR SCM_MAKSPCSYM(10)
#define SCM_IM_QUOTE SCM_MAKSPCSYM(11)
#define SCM_IM_SET SCM_MAKSPCSYM(12)
#define SCM_IM_DEFINE SCM_MAKSPCSYM(13)
#define SCM_IM_APPLY SCM_MAKISYM(14)
#define SCM_IM_CONT SCM_MAKISYM(15)
#define SCM_NUM_ISYMS 16
/* Important immediates
*/
#define SCM_BOOL_F SCM_MAKIFLAG(SCM_NUM_ISYMS+0)
#define SCM_BOOL_T SCM_MAKIFLAG(SCM_NUM_ISYMS+1)
#define SCM_UNDEFINED SCM_MAKIFLAG(SCM_NUM_ISYMS+2)
#define SCM_EOF_VAL SCM_MAKIFLAG(SCM_NUM_ISYMS+3)
#ifdef SICP
#define SCM_EOL SCM_BOOL_F
#else
#define SCM_EOL SCM_MAKIFLAG(SCM_NUM_ISYMS+4)
#endif
#define SCM_UNSPECIFIED SCM_MAKIFLAG(SCM_NUM_ISYMS+5)
/* Heap Pairs and the Empty List Predicates
*/
#define SCM_NULLP(x) (SCM_EOL == (x))
#define SCM_NNULLP(x) (SCM_EOL != (x))
#define SCM_CELLP(x) (!SCM_NCELLP(x))
#define SCM_NCELLP(x) ((sizeof(scm_cell)-1) & (int)(x))
#define SCM_UNBNDP(x) (SCM_UNDEFINED==(x))
/* Testing and Changing GC Marks in Various Standard Positions
*/
#define SCM_GCMARKP(x) (1 & (int)SCM_CDR(x))
#define SCM_GC8MARKP(x) (0x80 & (int)SCM_CAR(x))
#define SCM_SETGCMARK(x) (SCM_CDR(x) |= 1)
#define SCM_CLRGCMARK(x) (SCM_CDR(x) &= ~1L)
#define SCM_SETGC8MARK(x) (SCM_CAR(x) |= 0x80)
#define SCM_CLRGC8MARK(x) (SCM_CAR(x) &= ~0x80L)
/* Extracting Tag Bits, With or Without GC Safety and Optional Bits
*/
#define SCM_TYP3(x) (7 & (int)SCM_CAR(x))
#define SCM_TYP7(x) (0x7f & (int)SCM_CAR(x))
#define SCM_TYP7S(x) (0x7d & (int)SCM_CAR(x))
#define SCM_TYP16(x) (0xffff & (int)SCM_CAR(x))
#define SCM_TYP16S(x) (0xfeff & (int)SCM_CAR(x))
#define SCM_GCTYP16(x) (0xff7f & (int)SCM_CAR(x))
/* Two slightly extensible types: smobs and ptobs.
*
*/
#define SCM_SMOBNUM(x) (0x0ff & (CAR(x)>>8));
#define SCM_PTOBNUM(x) (0x0ff & (CAR(x)>>8));
#define SCM_DIRP(x) (SCM_NIMP(x) && (TYP16(x)==(scm_tc16_dir)))
#define SCM_OPDIRP(x) (SCM_NIMP(x) && (CAR(x)==(scm_tc16_dir | OPN)))
/* Lvectors
*/
#define SCM_LVECTORP(x) (TYP7(x)==tc7_lvector)
#if 0
/* Sockets
*/
#define tc_socket (tc7_port | OPN)
#define SCM_SOCKP(x) (((0x7f | OPN | RDNG | WRTNG) & CAR(x))==(tc_socket))
#define SCM_SOCKTYP(x) (CAR(x)>>24)
extern int scm_tc16_key_vector;
#define SCM_KEYVECP(X) (scm_tc16_key_vector == TYP16 (X))
#define SCM_KEYVECLEN(OBJ) (((unsigned long)CAR (obj)) >> 16)
#define SCM_MALLOCDATA(obj) ((char *)CDR(obj))
#define SCM_MALLOCLEN(obj) (((unsigned long)CAR (obj)) >> 16)
#define SCM_WORDDATA(obj) (CDR (obj))
#define SCM_BYTECODEP(X) ((TYP7 (X) == tc7_cclo) && (CCLO_SUBR (X) == rb_proc))
#define SCM_BYTECODE_CONSTANTS(X) (VELTS(X)[1])
#define SCM_BYTECODE_CODE(X) (VELTS(X)[2])
#define SCM_BYTECODE_NAME(X) (VELTS(X)[3])
#define SCM_BYTECODE_BCODE(X) (VELTS(X)[4])
#define SCM_BYTECODE_ELTS 5
#define SCM_FREEP(x) (CAR(x)==tc_free_cell)
#define SCM_NFREEP(x) (!FREEP(x))
#endif /* 0*/
#ifdef __STDC__
#else /* STDC */
#endif /* STDC */
#endif /* TAGSH */

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gdb/scm-valprint.c Normal file
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@ -0,0 +1,405 @@
/* 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"
/* 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. */
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 int
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 0;
}
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 (SCM_TYPE ? TYPE_LENGTH (SCM_TYPE) : sizeof (void*))
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);
}
int
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 */
fputs_filtered ("#@", stream);
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)
{
SCM name;
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:
punk: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 = unpack_long (type, valaddr);
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));
}