binutils-gdb/gdb/ch-lang.c
Fred Fish a8a69e6332 * Makefile.in (VERSION): Bump to 4.7.4.
* Makefile.in (SFILES_MAINDIR):  Add typeprint.c, c-typeprint.c,
	  m2-typeprint.c, c-valprint.c cp-valprint.c m2-valprint.c.
	* Makefile.in (HFILES):  Add valprint.h.
	* Makefile.in (OBS):  Add typeprint.o, c-typeprint.o,
	  m2-typeprint.o, c-valprint.o, cp-valprint.o m2-valprint.o.
	* typeprint.c, typeprint.h:  New files for language independent
	  type printing functions.
	* c-typeprint.c, m2-typeprint.c:  New files for language dependent
	  type printing functions and definitions.
	* valprint.h:  New include file for language independent value
	  printing definitions.
	* c-valprint.c, cp-valprint.c, m2-valprint.c:  New files for language
	  dependent value printing functions.
	* c-exp.y (production ptype):  Add range_type variable and use new
	  create_range_type function.
	* c-exp.y (tokentab2, tokentab3), c-lang.c (c_op_print_tab),
	  infcmd.c (path_var_name), language.c (unk_op_print_tab),
	  m2-lang.c (m2_op_print_tab):  Change from ANSI-obsolescent
	  "const static" to ANSI-conformant "static const".
	* c-exp.y (c_create_fundamental_type):  Remove unused nbytes.
	* c-exp.y (c_language_defn, cplus_language_defn):  Add c_print_type,
	  and c_val_print.
	* c-lang.h (c_print_type, c_val_print):  Add prototypes.
	* coffread.c (decode_type):  Add range_type variable and call to
	  new create_range_type function.
	* complaints.c (complain):  Remove unused val variable.
	* complaints.c (_initialize_complaints):  Make it void.
	* convex-tdep.c (value_of_trapped_internalvar):  Add range_type
	  variable and call new create_range_type function.
	* defs.h (enum val_prettyprint):  Move enum from value.h to here
	  so we can avoid having to include value.h just for prototypes that
	  need the enum (thanks ANSI).
	* dwarfread.c (struct_type):  Local anonymous_size variable is
	  only used if !BITS_BIG_ENDIAN.
	* dwarfread.c (decode_subscript_data_item):  Add rangetype
	  variable and call new create_range_type function.
	* elfread.c (elf_symfile_read):  Remove unused dbx and text_sect
	  variables.
	* eval.c (evaluate_subexp):  Remove unused local variable name
	  and the statement with no side effects that initializes it.
	* expprint.c (print_subexp):  Change local_printstr to
	  LA_PRINT_STRING.
	* gdbtypes.c (create_range_type):  New function that creates
	  a range type using code fragments from object file readers as
	  an example of what has to be initialized.
	* gdbtypes.c (create_array_type):  Removed index_type, low_bound,
	  and high_bound parameters, replaced with a single range_type
	  parameter.  Change function body to use passed in range_type
	  rather than handcrafting one.
	* gdbtypes.h (create_range_type):  Add prototype.
	* gdbtypes.h (create_array_type):  Change prototype parameters.
	* infrun.c (normal_stop):  Remove unused local variables tem and c.
	* infrun.c (hook_stop_stub):  Return 0 rather than random value.
	* language.c (unk_lang_print_type, unk_lang_val_print):  Add
	  stub functions that call error if called.
	* language.c (unknown_language_defn, auto_language_defn,
	  local_language_defn):  Add initializers unk_lang_print_type and
	  unk_lang_val_print.
	* language.h (struct language_defn):  Reformat for larger
	  comments, add la_print_type and la_val_print members.  Add
	  LA_PRINT_TYPE and LA_VAL_PRINT macros.  Change local_printchar
	  to LA_PRINT_CHAR and local_printstr to LA_PRINT_STRING.
	* m2-lang.c (m2_create_fundamental_type):  Remove unused local
	  variable nbytes.
	* m2-lang.c (m2_language_defn):  Add initializers m2_print_type
	  and m2_val_print.
	* m2-lang.h (m2_print_type, m2_val_print):  Add prototypes.
	* main.c (execute_command): Remove unused local variable cmdlines.
	* main.c (echo_command), stabsread.c (read_type), printcmd.c
	  (clear_displays), symmisc.c (block_depth), values.c
	  (clear_value_history):
	  Make testing of truth value of assignment result explicit.
	* mipsread.c (upgrade_type):  Update FIXME to include future use
	  of create_range_type.
	* printcmd.c (ptype_command, ptype_eval, whatis_command,
	  whatis_exp, maintenance_print_type):  Move prototypes and functions
	  to new typeprint.c.
	* printcmd.c (_initialize_printcmd):  Move add_com calls for
	  ptype_command and whatis_command to new typeprint.c.
	* ser-bsd.c (serial_open):  Remove unused variable sgttyb.
	* source.c (find_source_lines):  Local variable c only used
	  when LSEEK_NOT_LINEAR is defined.
	* stabsread.c (read_array_type):  Use new create_range_type
	  function.
	* stabsread.c (read_range_type):  Add new index_type variable and
	  call new create_range_type function rather than handcrafting
	  range types.
	* symmisc.c (type_print_1):  Change usages to LA_PRINT_TYPE.
	* symtab.c (typedef_print usages):  Use c_typedef_print, renamed.
	* symtab.c (type_print_base usages):  Use c_type_print_base.
	* symtab.c (type_print_varspec_prefix usages):  Use
	  c_type_print_varspec_prefix.
	* symtab.c (type_print_method_args usages):  Use
	  cp_type_print_method_args.
	* valprint.c:  Completely ripped apart and the fragments used
	  to create c-valprint.c, cp-valprint.c, m2-valprint.c, and
	  valprint.h.  Remaining stuff is language independent.
	* value.h (struct fn_field):  Forward declare for prototypes.
	* value.h (type_print_1):  Remove prototype.
	* value.h (enum val_prettyprint):  Moved to defs.h.
	* value.h (typedef_print):  Prototype renamed to c_typedef_print.
	* value.h (baseclass_offset):  Add prototype.
	**** start-sanitize-chill ****
	* Makefile.in (SFILES_MAINDIR):  Add ch-typeprint.c, ch-valprint.c.
	* Makefile.in (OBS):  Add ch-typeprint.o, ch-valprint.o.
	* ch-typeprint.c:  New file for language dependent type printing.
	* ch-valprint.c:  New file for language dependent value printing.
	* ch-exp.y (parse_number):  Remove prototype and stub function.
	* ch-exp.y (decode_integer_literal):  Removed unused digits and
	  temp variables.
	* ch-exp.y (convert_float):  Completely ifdef out for now.
	* ch-exp.y (tokentab2, tokentab3, tokentab4, tokentab5),
	  ch-lang.c (chill_op_print_tab):
	  Change from ANSI-obsolescent "const static" to ANSI-conformant
	  "static const".
	* ch-exp.y (yylex):  Add unhandled storage class enumeration
	  literals to switch statement for completeness.
	* ch-lang.c (chill_create_fundamental_types):  Remove unused
	  nbytes variable.  Change dummy type to 2 bytes to match int.
	  Handle FT_VOID types gratuituously added to chill DWARF by
	  compiler.  Change FT_CHAR case to generate an TYPE_CODE_CHAR
	  type rather than a one byte TYPE_CODE_INT type.
	* ch-lang.c (chill_language_defn):  Add chill_print_type and
	  chill_val_print.
	* ch-lang.h (chill_print_type, chill_val_print):  Add prototypes.
	**** end-sanitize-chill ****
1992-12-18 20:21:32 +00:00

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/* Chill language support routines for GDB, the GNU debugger.
Copyright 1992 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "defs.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "expression.h"
#include "parser-defs.h"
#include "language.h"
#include "ch-lang.h"
static void
chill_printchar (c, stream)
register int c;
FILE *stream;
{
c &= 0xFF; /* Avoid sign bit follies */
if (PRINT_LITERAL_FORM (c))
{
fprintf_filtered (stream, "'%c'", c);
}
else
{
fprintf_filtered (stream, "C'%.2x'", (unsigned int) c);
}
}
/* Print the character string STRING, printing at most LENGTH characters.
Printing stops early if the number hits print_max; repeat counts
are printed as appropriate. Print ellipses at the end if we
had to stop before printing LENGTH characters, or if FORCE_ELLIPSES.
Note that gdb maintains the length of strings without counting the
terminating null byte, while chill strings are typically written with
an explicit null byte. So we always assume an implied null byte
until gdb is able to maintain non-null terminated strings as well
as null terminated strings (FIXME).
*/
static void
chill_printstr (stream, string, length, force_ellipses)
FILE *stream;
char *string;
unsigned int length;
int force_ellipses;
{
register unsigned int i;
unsigned int things_printed = 0;
int in_literal_form = 0;
int in_control_form = 0;
int need_slashslash = 0;
unsigned int c;
extern int repeat_count_threshold;
extern int print_max;
if (length == 0)
{
chill_printchar ('\0', stream);
return;
}
for (i = 0; i < length && things_printed < print_max; ++i)
{
/* Position of the character we are examining
to see whether it is repeated. */
unsigned int rep1;
/* Number of repetitions we have detected so far. */
unsigned int reps;
QUIT;
if (need_slashslash)
{
fputs_filtered ("//", stream);
need_slashslash = 0;
}
rep1 = i + 1;
reps = 1;
while (rep1 < length && string[rep1] == string[i])
{
++rep1;
++reps;
}
c = string[i];
if (reps > repeat_count_threshold)
{
if (in_control_form || in_literal_form)
{
fputs_filtered ("'//", stream);
in_control_form = in_literal_form = 0;
}
chill_printchar (c, stream);
fprintf_filtered (stream, "<repeats %u times>", reps);
i = rep1 - 1;
things_printed += repeat_count_threshold;
need_slashslash = 1;
}
else
{
if (PRINT_LITERAL_FORM (c))
{
if (!in_literal_form)
{
if (in_control_form)
{
fputs_filtered ("'//", stream);
in_control_form = 0;
}
fputs_filtered ("'", stream);
in_literal_form = 1;
}
fprintf_filtered (stream, "%c", c);
}
else
{
if (!in_control_form)
{
if (in_literal_form)
{
fputs_filtered ("'//", stream);
in_literal_form = 0;
}
fputs_filtered ("c'", stream);
in_control_form = 1;
}
fprintf_filtered (stream, "%.2x", c);
}
++things_printed;
}
}
/* Terminate the quotes if necessary. */
if (in_literal_form || in_control_form)
{
fputs_filtered ("'", stream);
}
if (force_ellipses || (i < length))
{
fputs_filtered ("...", stream);
}
}
static struct type *
chill_create_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
register struct type *type = NULL;
switch (typeid)
{
default:
/* FIXME: For now, if we are asked to produce a type not in this
language, create the equivalent of a C integer type with the
name "<?type?>". When all the dust settles from the type
reconstruction work, this should probably become an error. */
type = init_type (TYPE_CODE_INT, 2, 0, "<?type?>", objfile);
warning ("internal error: no chill fundamental type %d", typeid);
break;
case FT_VOID:
/* FIXME: Currently the GNU Chill compiler emits some DWARF entries for
typedefs, unrelated to anything directly in the code being compiled,
that have some FT_VOID types. Just fake it for now. */
type = init_type (TYPE_CODE_VOID, 0, 0, "<?VOID?>", objfile);
break;
case FT_BOOLEAN:
type = init_type (TYPE_CODE_BOOL, 1, TYPE_FLAG_UNSIGNED, "BOOL", objfile);
break;
case FT_CHAR:
type = init_type (TYPE_CODE_CHAR, 1, TYPE_FLAG_UNSIGNED, "CHAR", objfile);
break;
case FT_SIGNED_CHAR:
type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_SIGNED, "BYTE", objfile);
break;
case FT_UNSIGNED_CHAR:
type = init_type (TYPE_CODE_INT, 1, TYPE_FLAG_UNSIGNED, "UBYTE", objfile);
break;
case FT_SHORT: /* Chill ints are 2 bytes */
type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_SIGNED, "INT", objfile);
break;
case FT_UNSIGNED_SHORT: /* Chill ints are 2 bytes */
type = init_type (TYPE_CODE_INT, 2, TYPE_FLAG_UNSIGNED, "UINT", objfile);
break;
case FT_INTEGER: /* Chill longs are 4 bytes */
type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_SIGNED, "LONG", objfile);
break;
case FT_UNSIGNED_INTEGER: /* Chill longs are 4 bytes */
type = init_type (TYPE_CODE_INT, 4, TYPE_FLAG_UNSIGNED, "ULONG", objfile);
break;
case FT_FLOAT:
type = init_type (TYPE_CODE_FLT, 4, 0, "REAL", objfile);
break;
case FT_DBL_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT, 8, 0, "LONG_REAL", objfile);
break;
}
return (type);
}
/* Table of operators and their precedences for printing expressions. */
static const struct op_print chill_op_print_tab[] = {
{"AND", BINOP_LOGICAL_AND, PREC_LOGICAL_AND, 0},
{"OR", BINOP_LOGICAL_OR, PREC_LOGICAL_OR, 0},
{"NOT", UNOP_LOGICAL_NOT, PREC_PREFIX, 0},
{"MOD", BINOP_REM, PREC_MUL, 0},
{":=", BINOP_ASSIGN, PREC_ASSIGN, 1},
{"=", BINOP_EQUAL, PREC_EQUAL, 0},
{"/=", BINOP_NOTEQUAL, PREC_EQUAL, 0},
{"<=", BINOP_LEQ, PREC_ORDER, 0},
{">=", BINOP_GEQ, PREC_ORDER, 0},
{">", BINOP_GTR, PREC_ORDER, 0},
{"<", BINOP_LESS, PREC_ORDER, 0},
{"+", BINOP_ADD, PREC_ADD, 0},
{"-", BINOP_SUB, PREC_ADD, 0},
{"*", BINOP_MUL, PREC_MUL, 0},
{"/", BINOP_DIV, PREC_MUL, 0},
{"-", UNOP_NEG, PREC_PREFIX, 0},
{NULL, 0, 0, 0}
};
/* The built-in types of Chill. */
struct type *builtin_type_chill_bool;
struct type *builtin_type_chill_char;
struct type *builtin_type_chill_long;
struct type *builtin_type_chill_ulong;
struct type *builtin_type_chill_real;
struct type ** const (chill_builtin_types[]) =
{
&builtin_type_chill_bool,
&builtin_type_chill_char,
&builtin_type_chill_long,
&builtin_type_chill_ulong,
&builtin_type_chill_real,
0
};
const struct language_defn chill_language_defn = {
"chill",
language_chill,
chill_builtin_types,
range_check_on,
type_check_on,
chill_parse, /* parser */
chill_error, /* parser error function */
chill_printchar, /* print a character constant */
chill_printstr, /* function to print a string constant */
chill_create_fundamental_type,/* Create fundamental type in this language */
chill_print_type, /* Print a type using appropriate syntax */
chill_val_print, /* Print a value using appropriate syntax */
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
&builtin_type_chill_real, /* longest floating point type */
{"", "B'", "", ""}, /* Binary format info */
{"O'%o", "O'", "o", ""}, /* Octal format info */
{"D'%d", "D'", "d", ""}, /* Decimal format info */
{"H'%x", "H'", "x", ""}, /* Hex format info */
chill_op_print_tab, /* expression operators for printing */
LANG_MAGIC
};
/* Initialization for Chill */
void
_initialize_chill_language ()
{
builtin_type_chill_bool =
init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"BOOL", (struct objfile *) NULL);
builtin_type_chill_char =
init_type (TYPE_CODE_CHAR, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"CHAR", (struct objfile *) NULL);
builtin_type_chill_long =
init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
0,
"LONG", (struct objfile *) NULL);
builtin_type_chill_ulong =
init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"ULONG", (struct objfile *) NULL);
builtin_type_chill_real =
init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0,
"LONG_REAL", (struct objfile *) NULL);
add_language (&chill_language_defn);
}