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* c-exp.y (c_create_fundamental_type): New function to create

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language specific fundamental types for C.
	* m2-exp.y (m2_create_fundamental_type):  New function to create
	language specific fundamental types for Modula 2.
	* c-exp.y (c_language_defn, cplus_language_defn):  Add
	c_create_fundamental_type to language struct initializers.
	* m2-exp.y (m2_language_defn):  Add m2_create_fundamental_type
	to language struct initializers.
	* dwarfread.c (expression.h, language.h):  Include.
	* dwarfread.c (ftypes):  New array to hold fundamental types
	for current compilation unit.
	* dwarfread.c (cu_language_defn):  New pointer to language
	struct for language of current compilation unit.
	* dwarfread.c (dwarf_fundamental_type):  New function to
	create/lookup fundamental types.
	* dwarfread.c (set_cu_language):  Initialize cu_language_defn.
	* dwarfread.c (throughout):  Replace lookup_fundamental_type
	with dwarf_fundamental_type.
	* dwarfread.c (read_file_scope):  Zero out ftypes for each new
	compilation unit (may be different language or different objfile).
	* gdbtypes.c (lookup_fundamental_type):  Move actual type
	creations into language specific fundamental type creation
	functions and call via create_fundamental_type.  Add comment
	about this function being obsolescent.
	* gdbtypes.h (FT_BYTE, FT_UNSIGNED_BYTE):  New types, true byte
	sized signed and unsigned integers.
	* gdbtypes.h (FT_NUM_MEMBERS):  Increment, new types added.
	* language.c (language_def):  New function to lookup a language
	struct given it's enumeration.
	* language.h (struct language_defn):  Add la_fund_type, a pointer
	to a function that creates fundamental types for this language.
	* language.h (create_fundamental_type):  New macro to create
	fundamental types based on the current language.
	* language.h (language_def):  Add prototype.
	* language.c (unk_lang_create_fundamental_type):  New function
	for initializing language structs, calls error if called.
	* language.c (unk_language_defn, auto_language_defn,
	local_language_defn):  Use unk_lang_create_fundamental_type.
	**** start-sanitize-chill ****
	ch-exp.y (chill_create_fundamental_type):  New function.
	ch-exp.y (chill_language_defn):  Add chill_create_fundamental_type.
	ch-exp.y (_initialize_chill_exp):  BOOL types are only one byte.
	**** end-sanitize-chill ****
This commit is contained in:
Fred Fish 1992-12-03 20:28:16 +00:00
parent ef6bfbdbcc
commit bf229b4ea5
9 changed files with 601 additions and 231 deletions
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46
gdb/ChangeLog
View File

@ -1,3 +1,49 @@
Thu Dec 3 12:00:06 1992 Fred Fish (fnf@cygnus.com)
* c-exp.y (c_create_fundamental_type): New function to create
language specific fundamental types for C.
* m2-exp.y (m2_create_fundamental_type): New function to create
language specific fundamental types for Modula 2.
* c-exp.y (c_language_defn, cplus_language_defn): Add
c_create_fundamental_type to language struct initializers.
* m2-exp.y (m2_language_defn): Add m2_create_fundamental_type
to language struct initializers.
* dwarfread.c (expression.h, language.h): Include.
* dwarfread.c (ftypes): New array to hold fundamental types
for current compilation unit.
* dwarfread.c (cu_language_defn): New pointer to language
struct for language of current compilation unit.
* dwarfread.c (dwarf_fundamental_type): New function to
create/lookup fundamental types.
* dwarfread.c (set_cu_language): Initialize cu_language_defn.
* dwarfread.c (throughout): Replace lookup_fundamental_type
with dwarf_fundamental_type.
* dwarfread.c (read_file_scope): Zero out ftypes for each new
compilation unit (may be different language or different objfile).
* gdbtypes.c (lookup_fundamental_type): Move actual type
creations into language specific fundamental type creation
functions and call via create_fundamental_type. Add comment
about this function being obsolescent.
* gdbtypes.h (FT_BYTE, FT_UNSIGNED_BYTE): New types, true byte
sized signed and unsigned integers.
* gdbtypes.h (FT_NUM_MEMBERS): Increment, new types added.
* language.c (language_def): New function to lookup a language
struct given it's enumeration.
* language.h (struct language_defn): Add la_fund_type, a pointer
to a function that creates fundamental types for this language.
* language.h (create_fundamental_type): New macro to create
fundamental types based on the current language.
* language.h (language_def): Add prototype.
* language.c (unk_lang_create_fundamental_type): New function
for initializing language structs, calls error if called.
* language.c (unk_language_defn, auto_language_defn,
local_language_defn): Use unk_lang_create_fundamental_type.
**** start-sanitize-chill ****
ch-exp.y (chill_create_fundamental_type): New function.
ch-exp.y (chill_language_defn): Add chill_create_fundamental_type.
ch-exp.y (_initialize_chill_exp): BOOL types are only one byte.
**** end-sanitize-chill ****
**** start-sanitize-chill ****
Tue Dec 1 17:07:31 1992 Fred Fish (fnf@cygnus.com)

146
gdb/c-exp.y
View File

@ -1666,6 +1666,148 @@ c_printstr (stream, string, length, force_ellipses)
fputs_filtered ("...", stream);
}
/* Create a fundamental C type using default reasonable for the current
target machine.
Some object/debugging file formats (DWARF version 1, COFF, etc) do not
define fundamental types such as "int" or "double". Others (stabs or
DWARF version 2, etc) do define fundamental types. For the formats which
don't provide fundamental types, gdb can create such types using this
function.
FIXME: Some compilers distinguish explicitly signed integral types
(signed short, signed int, signed long) from "regular" integral types
(short, int, long) in the debugging information. There is some dis-
agreement as to how useful this feature is. In particular, gcc does
not support this. Also, only some debugging formats allow the
distinction to be passed on to a debugger. For now, we always just
use "short", "int", or "long" as the type name, for both the implicit
and explicitly signed types. This also makes life easier for the
gdb test suite since we don't have to account for the differences
in output depending upon what the compiler and debugging format
support. We will probably have to re-examine the issue when gdb
starts taking it's fundamental type information directly from the
debugging information supplied by the compiler. fnf@cygnus.com */
static struct type *
c_create_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
register struct type *type = NULL;
register int nbytes;
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,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "<?type?>", objfile);
warning ("internal error: no C/C++ fundamental type %d", typeid);
break;
case FT_VOID:
type = init_type (TYPE_CODE_VOID,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "void", objfile);
break;
case FT_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "char", objfile);
break;
case FT_SIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "signed char", objfile);
break;
case FT_UNSIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
break;
case FT_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
0, "short", objfile);
break;
case FT_SIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "short", objfile); /* FIXME-fnf */
break;
case FT_UNSIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
break;
case FT_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "int", objfile);
break;
case FT_SIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "int", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
break;
case FT_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
0, "long", objfile);
break;
case FT_SIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "long", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
break;
case FT_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
0, "long long", objfile);
break;
case FT_SIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "signed long long", objfile);
break;
case FT_UNSIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
break;
case FT_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
0, "float", objfile);
break;
case FT_DBL_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "double", objfile);
break;
case FT_EXT_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "long double", objfile);
break;
}
return (type);
}
/* Table mapping opcodes into strings for printing operators
and precedences of the operators. */
@ -1759,7 +1901,8 @@ const struct language_defn c_language_defn = {
c_error,
c_printchar, /* Print a character constant */
c_printstr, /* Function to print string constant */
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
c_create_fundamental_type, /* Create fundamental type in this language */
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
&builtin_type_double, /* longest floating point type */ /*FIXME*/
{"", "", "", ""}, /* Binary format info */
@ -1780,6 +1923,7 @@ const struct language_defn cplus_language_defn = {
c_error,
c_printchar, /* Print a character constant */
c_printstr, /* Function to print string constant */
c_create_fundamental_type, /* Create fundamental type in this language */
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
&builtin_type_double, /* longest floating point type */ /*FIXME*/

67
gdb/ch-exp.y
View File

@ -1431,6 +1431,70 @@ chill_printstr (stream, string, length, force_ellipses)
}
}
static struct type *
chill_create_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
register struct type *type = NULL;
register int nbytes;
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,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "<?type?>", objfile);
warning ("internal error: no chill fundamental type %d", typeid);
break;
case FT_BOOLEAN:
type = init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "BOOL", objfile);
break;
case FT_CHAR:
type = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "CHAR", objfile);
break;
case FT_BYTE:
type = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "BYTE", objfile);
break;
case FT_UNSIGNED_BYTE:
type = init_type (TYPE_CODE_INT, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "UBYTE", objfile);
break;
case FT_INTEGER:
type = init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "INT", objfile);
break;
case FT_UNSIGNED_INTEGER:
type = init_type (TYPE_CODE_INT, TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "UINT", objfile);
break;
case FT_LONG:
type = init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "LONG", objfile);
break;
case FT_UNSIGNED_LONG:
type = init_type (TYPE_CODE_INT, TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "ULONG", objfile);
break;
case FT_FLOAT:
type = init_type (TYPE_CODE_FLT, TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
0, "REAL", objfile);
break;
case FT_DBL_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT, TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "LONG REAL", objfile);
break;
}
return (type);
}
/* Table of operators and their precedences for printing expressions. */
@ -1483,6 +1547,7 @@ const struct language_defn chill_language_defn = {
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 */
&BUILTIN_TYPE_LONGEST, /* longest signed integral type */
&BUILTIN_TYPE_UNSIGNED_LONGEST,/* longest unsigned integral type */
&builtin_type_chill_real, /* longest floating point type */
@ -1500,7 +1565,7 @@ void
_initialize_chill_exp ()
{
builtin_type_chill_bool =
init_type (TYPE_CODE_BOOL, TARGET_INT_BIT / TARGET_CHAR_BIT,
init_type (TYPE_CODE_BOOL, TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"BOOL", (struct objfile *) NULL);
builtin_type_chill_char =

149
gdb/dwarfread.c
View File

@ -50,6 +50,8 @@ other things to work on, if you get bored. :-)
#include "elf/dwarf.h"
#include "buildsym.h"
#include "demangle.h"
#include "expression.h" /* Needed for enum exp_opcode in language.h, sigh... */
#include "language.h"
#include <varargs.h>
#include <fcntl.h>
@ -311,19 +313,38 @@ struct pending **list_in_scope = &file_symbols;
we can divide any DIE offset by 4 to obtain a unique index into this fixed
size array. Since each element is a 4 byte pointer, it takes exactly as
much memory to hold this array as to hold the DWARF info for a given
compilation unit. But it gets freed as soon as we are done with it. */
compilation unit. But it gets freed as soon as we are done with it.
This has worked well in practice, as a reasonable tradeoff between memory
consumption and speed, without having to resort to much more complicated
algorithms. */
static struct type **utypes; /* Pointer to array of user type pointers */
static int numutypes; /* Max number of user type pointers */
/* Maintain an array of referenced fundamental types for the current
compilation unit being read. For DWARF version 1, we have to construct
the fundamental types on the fly, since no information about the
fundamental types is supplied. Each such fundamental type is created by
calling a language dependent routine to create the type, and then a
pointer to that type is then placed in the array at the index specified
by it's FT_<TYPENAME> value. The array has a fixed size set by the
FT_NUM_MEMBERS compile time constant, which is the number of predefined
fundamental types gdb knows how to construct. */
static struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */
/* Record the language for the compilation unit which is currently being
processed. We know it once we have seen the TAG_compile_unit DIE,
and we need it while processing the DIE's for that compilation unit.
It is eventually saved in the symtab structure, but we don't finalize
the symtab struct until we have processed all the DIE's for the
compilation unit. */
compilation unit. We also need to get and save a pointer to the
language struct for this language, so we can call the language
dependent routines for doing things such as creating fundamental
types. */
static enum language cu_language;
static const struct language_defn *cu_language_defn;
/* Forward declarations of static functions so we don't have to worry
about ordering within this file. */
@ -456,6 +477,66 @@ record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type,
static void
set_cu_language PARAMS ((struct dieinfo *));
static struct type *
dwarf_fundamental_type PARAMS ((struct objfile *, int));
/*
LOCAL FUNCTION
dwarf_fundamental_type -- lookup or create a fundamental type
SYNOPSIS
struct type *
dwarf_fundamental_type (struct objfile *objfile, int typeid)
DESCRIPTION
DWARF version 1 doesn't supply any fundamental type information,
so gdb has to construct such types. It has a fixed number of
fundamental types that it knows how to construct, which is the
union of all types that it knows how to construct for all languages
that it knows about. These are enumerated in gdbtypes.h.
As an example, assume we find a DIE that references a DWARF
fundamental type of FT_integer. We first look in the ftypes
array to see if we already have such a type, indexed by the
gdb internal value of FT_INTEGER. If so, we simply return a
pointer to that type. If not, then we ask an appropriate
language dependent routine to create a type FT_INTEGER, using
defaults reasonable for the current target machine, and install
that type in ftypes for future reference.
RETURNS
Pointer to a fundamental type.
*/
static struct type *
dwarf_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
{
error ("internal error - invalid fundamental type id %d", typeid);
}
/* Look for this particular type in the fundamental type vector. If one is
not found, create and install one appropriate for the current language
and the current target machine. */
if (ftypes[typeid] == NULL)
{
ftypes[typeid] = cu_language_defn -> la_fund_type(objfile, typeid);
}
return (ftypes[typeid]);
}
/*
LOCAL FUNCTION
@ -510,6 +591,7 @@ set_cu_language (dip)
cu_language = language_unknown;
break;
}
cu_language_defn = language_def (cu_language);
}
/*
@ -787,7 +869,7 @@ alloc_utype (die_ref, utypep)
typep = utypes + utypeidx;
if ((utypeidx < 0) || (utypeidx >= numutypes))
{
utypep = lookup_fundamental_type (current_objfile, FT_INTEGER);
utypep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
dwarfwarn ("reference to DIE (0x%x) outside compilation unit", die_ref);
}
else if (*typep != NULL)
@ -850,7 +932,7 @@ decode_die_type (dip)
}
else
{
type = lookup_fundamental_type (current_objfile, FT_INTEGER);
type = dwarf_fundamental_type (current_objfile, FT_INTEGER);
}
return (type);
}
@ -1129,7 +1211,7 @@ decode_array_element_type (scan)
if ((nbytes = attribute_size (attribute)) == -1)
{
SQUAWK (("bad array element type attribute 0x%x", attribute));
typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
}
else
{
@ -1156,7 +1238,7 @@ decode_array_element_type (scan)
break;
default:
SQUAWK (("bad array element type attribute 0x%x", attribute));
typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
break;
}
}
@ -1309,7 +1391,7 @@ dwarf_read_array_type (dip)
}
TYPE_CODE (utype) = TYPE_CODE_ARRAY;
TYPE_TARGET_TYPE (utype) =
lookup_fundamental_type (current_objfile, FT_INTEGER);
dwarf_fundamental_type (current_objfile, FT_INTEGER);
TYPE_LENGTH (utype) = 1 * TYPE_LENGTH (TYPE_TARGET_TYPE (utype));
}
else
@ -1761,6 +1843,7 @@ read_file_scope (dip, thisdie, enddie, objfile)
utypes = (struct type **) xmalloc (numutypes * sizeof (struct type *));
back_to = make_cleanup (free, utypes);
memset (utypes, 0, numutypes * sizeof (struct type *));
memset (ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *));
start_symtab (dip -> at_name, dip -> at_comp_dir, dip -> at_low_pc);
decode_line_numbers (lnbase);
process_dies (thisdie + dip -> die_length, enddie, objfile);
@ -3073,7 +3156,7 @@ decode_modified_type (modifiers, modcount, mtype)
break;
default:
SQUAWK (("botched modified type decoding (mtype 0x%x)", mtype));
typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
break;
}
}
@ -3138,100 +3221,100 @@ decode_fund_type (fundtype)
{
case FT_void:
typep = lookup_fundamental_type (current_objfile, FT_VOID);
typep = dwarf_fundamental_type (current_objfile, FT_VOID);
break;
case FT_boolean: /* Was FT_set in AT&T version */
typep = lookup_fundamental_type (current_objfile, FT_BOOLEAN);
typep = dwarf_fundamental_type (current_objfile, FT_BOOLEAN);
break;
case FT_pointer: /* (void *) */
typep = lookup_fundamental_type (current_objfile, FT_VOID);
typep = dwarf_fundamental_type (current_objfile, FT_VOID);
typep = lookup_pointer_type (typep);
break;
case FT_char:
typep = lookup_fundamental_type (current_objfile, FT_CHAR);
typep = dwarf_fundamental_type (current_objfile, FT_CHAR);
break;
case FT_signed_char:
typep = lookup_fundamental_type (current_objfile, FT_SIGNED_CHAR);
typep = dwarf_fundamental_type (current_objfile, FT_SIGNED_CHAR);
break;
case FT_unsigned_char:
typep = lookup_fundamental_type (current_objfile, FT_UNSIGNED_CHAR);
typep = dwarf_fundamental_type (current_objfile, FT_UNSIGNED_CHAR);
break;
case FT_short:
typep = lookup_fundamental_type (current_objfile, FT_SHORT);
typep = dwarf_fundamental_type (current_objfile, FT_SHORT);
break;
case FT_signed_short:
typep = lookup_fundamental_type (current_objfile, FT_SIGNED_SHORT);
typep = dwarf_fundamental_type (current_objfile, FT_SIGNED_SHORT);
break;
case FT_unsigned_short:
typep = lookup_fundamental_type (current_objfile, FT_UNSIGNED_SHORT);
typep = dwarf_fundamental_type (current_objfile, FT_UNSIGNED_SHORT);
break;
case FT_integer:
typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
break;
case FT_signed_integer:
typep = lookup_fundamental_type (current_objfile, FT_SIGNED_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_SIGNED_INTEGER);
break;
case FT_unsigned_integer:
typep = lookup_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER);
typep = dwarf_fundamental_type (current_objfile, FT_UNSIGNED_INTEGER);
break;
case FT_long:
typep = lookup_fundamental_type (current_objfile, FT_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_LONG);
break;
case FT_signed_long:
typep = lookup_fundamental_type (current_objfile, FT_SIGNED_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_SIGNED_LONG);
break;
case FT_unsigned_long:
typep = lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_UNSIGNED_LONG);
break;
case FT_long_long:
typep = lookup_fundamental_type (current_objfile, FT_LONG_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_LONG_LONG);
break;
case FT_signed_long_long:
typep = lookup_fundamental_type (current_objfile, FT_SIGNED_LONG_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_SIGNED_LONG_LONG);
break;
case FT_unsigned_long_long:
typep = lookup_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG);
typep = dwarf_fundamental_type (current_objfile, FT_UNSIGNED_LONG_LONG);
break;
case FT_float:
typep = lookup_fundamental_type (current_objfile, FT_FLOAT);
typep = dwarf_fundamental_type (current_objfile, FT_FLOAT);
break;
case FT_dbl_prec_float:
typep = lookup_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT);
typep = dwarf_fundamental_type (current_objfile, FT_DBL_PREC_FLOAT);
break;
case FT_ext_prec_float:
typep = lookup_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT);
typep = dwarf_fundamental_type (current_objfile, FT_EXT_PREC_FLOAT);
break;
case FT_complex:
typep = lookup_fundamental_type (current_objfile, FT_COMPLEX);
typep = dwarf_fundamental_type (current_objfile, FT_COMPLEX);
break;
case FT_dbl_prec_complex:
typep = lookup_fundamental_type (current_objfile, FT_DBL_PREC_COMPLEX);
typep = dwarf_fundamental_type (current_objfile, FT_DBL_PREC_COMPLEX);
break;
case FT_ext_prec_complex:
typep = lookup_fundamental_type (current_objfile, FT_EXT_PREC_COMPLEX);
typep = dwarf_fundamental_type (current_objfile, FT_EXT_PREC_COMPLEX);
break;
}
@ -3239,7 +3322,7 @@ decode_fund_type (fundtype)
if ((typep == NULL) && !(FT_lo_user <= fundtype && fundtype <= FT_hi_user))
{
SQUAWK (("unexpected fundamental type 0x%x", fundtype));
typep = lookup_fundamental_type (current_objfile, FT_VOID);
typep = dwarf_fundamental_type (current_objfile, FT_VOID);
}
return (typep);

225
gdb/gdbtypes.c
View File

@ -910,28 +910,24 @@ init_type (code, length, flags, name, objfile)
define fundamental types.
For the formats which don't provide fundamental types, gdb can create
such types, using defaults reasonable for the current target machine.
such types, using defaults reasonable for the current language and
the current target machine.
NOTE: This routine is obsolescent. Each debugging format reader
should manage it's own fundamental types, either creating them from
suitable defaults or reading them from the debugging information,
whichever is appropriate. The DWARF reader has already been
fixed to do this. Once the other readers are fixed, this routine
will go away. Also note that fundamental types should be managed
on a compilation unit basis in a multi-language environment, not
on a linkage unit basis as is done here. */
FIXME: Some compilers distinguish explicitly signed integral types
(signed short, signed int, signed long) from "regular" integral types
(short, int, long) in the debugging information. There is some dis-
agreement as to how useful this feature is. In particular, gcc does
not support this. Also, only some debugging formats allow the
distinction to be passed on to a debugger. For now, we always just
use "short", "int", or "long" as the type name, for both the implicit
and explicitly signed types. This also makes life easier for the
gdb test suite since we don't have to account for the differences
in output depending upon what the compiler and debugging format
support. We will probably have to re-examine the issue when gdb
starts taking it's fundamental type information directly from the
debugging information supplied by the compiler. fnf@cygnus.com */
struct type *
lookup_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
register struct type *type = NULL;
register struct type **typep;
register int nbytes;
@ -939,187 +935,28 @@ lookup_fundamental_type (objfile, typeid)
{
error ("internal error - invalid fundamental type id %d", typeid);
}
else
/* If this is the first time we need a fundamental type for this objfile
then we need to initialize the vector of type pointers. */
if (objfile -> fundamental_types == NULL)
{
/* If this is the first time we */
if (objfile -> fundamental_types == NULL)
{
nbytes = FT_NUM_MEMBERS * sizeof (struct type *);
objfile -> fundamental_types = (struct type **)
obstack_alloc (&objfile -> type_obstack, nbytes);
memset ((char *) objfile -> fundamental_types, 0, nbytes);
}
typep = objfile -> fundamental_types + typeid;
if ((type = *typep) == NULL)
{
switch (typeid)
{
default:
error ("internal error: unhandled type id %d", typeid);
break;
case FT_VOID:
type = init_type (TYPE_CODE_VOID,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0,
"void", objfile);
break;
case FT_BOOLEAN:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"boolean", objfile);
break;
case FT_STRING:
type = init_type (TYPE_CODE_PASCAL_ARRAY,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0,
"string", objfile);
break;
case FT_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0,
"char", objfile);
break;
case FT_SIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED,
"signed char", objfile);
break;
case FT_UNSIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"unsigned char", objfile);
break;
case FT_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
0,
"short", objfile);
break;
case FT_SIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED,
"short", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"unsigned short", objfile);
break;
case FT_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0,
"int", objfile);
break;
case FT_SIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED,
"int", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"unsigned int", objfile);
break;
case FT_FIXED_DECIMAL:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0,
"fixed decimal", objfile);
break;
case FT_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
0,
"long", objfile);
break;
case FT_SIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED,
"long", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"unsigned long", objfile);
break;
case FT_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
0,
"long long", objfile);
break;
case FT_SIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED,
"signed long long", objfile);
break;
case FT_UNSIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED,
"unsigned long long", objfile);
break;
case FT_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
0,
"float", objfile);
break;
case FT_DBL_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0,
"double", objfile);
break;
case FT_FLOAT_DECIMAL:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0,
"floating decimal", objfile);
break;
case FT_EXT_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
0,
"long double", objfile);
break;
case FT_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
0,
"complex", objfile);
break;
case FT_DBL_PREC_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
0,
"double complex", objfile);
break;
case FT_EXT_PREC_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
0,
"long double complex", objfile);
break;
}
/* Install the newly created type in the objfile's fundamental_types
vector. */
*typep = type;
}
nbytes = FT_NUM_MEMBERS * sizeof (struct type *);
objfile -> fundamental_types = (struct type **)
obstack_alloc (&objfile -> type_obstack, nbytes);
memset ((char *) objfile -> fundamental_types, 0, nbytes);
}
return (type);
/* Look for this particular type in the fundamental type vector. If one is
not found, create and install one appropriate for the current language. */
typep = objfile -> fundamental_types + typeid;
if (*typep == NULL)
{
*typep = create_fundamental_type (objfile, typeid);
}
return (*typep);
}
#if MAINTENANCE_CMDS

6
gdb/gdbtypes.h
View File

@ -51,8 +51,10 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#define FT_STRING 23
#define FT_FIXED_DECIMAL 24
#define FT_FLOAT_DECIMAL 25
#define FT_BYTE 26
#define FT_UNSIGNED_BYTE 27
#define FT_NUM_MEMBERS 26
#define FT_NUM_MEMBERS 28 /* Highest FT_* above, plus one. */
/* Different kinds of data types are distinguished by the `code' field. */
@ -80,7 +82,7 @@ enum type_code
/* Modula-2 */
TYPE_CODE_CHAR, /* *real* character type */
TYPE_CODE_BOOL /* Builtin BOOLEAN type */
TYPE_CODE_BOOL /* BOOLEAN type */
};
/* For now allow source to use TYPE_CODE_CLASS for C++ classes, as an

27
gdb/language.c
View File

@ -1022,6 +1022,22 @@ range_error (va_alist)
/* This page contains miscellaneous functions */
/* Return the language struct for a given language enum. */
const struct language_defn *
language_def(lang)
enum language lang;
{
int i;
for (i = 0; i < languages_size; i++) {
if (languages[i]->la_language == lang) {
return languages[i];
}
}
return NULL;
}
/* Return the language as a string */
char *
language_str(lang)
@ -1116,6 +1132,14 @@ unk_lang_printstr (stream, string, length, force_ellipses)
error ("internal error - unimplemented function unk_lang_printstr called.");
}
static struct type *
unk_lang_create_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
error ("internal error - unimplemented function unk_lang_create_fundamental_type called.");
}
static struct type ** const (unknown_builtin_types[]) = { 0 };
static const struct op_print unk_op_print_tab[] = { 0 };
@ -1129,6 +1153,7 @@ const struct language_defn unknown_language_defn = {
unk_lang_error,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_create_fundamental_type,
&builtin_type_error, /* longest signed integral type */
&builtin_type_error, /* longest unsigned integral type */
&builtin_type_error, /* longest floating point type */
@ -1151,6 +1176,7 @@ const struct language_defn auto_language_defn = {
unk_lang_error,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_create_fundamental_type,
&builtin_type_error, /* longest signed integral type */
&builtin_type_error, /* longest unsigned integral type */
&builtin_type_error, /* longest floating point type */
@ -1172,6 +1198,7 @@ const struct language_defn local_language_defn = {
unk_lang_error,
unk_lang_printchar, /* Print character constant */
unk_lang_printstr,
unk_lang_create_fundamental_type,
&builtin_type_error, /* longest signed integral type */
&builtin_type_error, /* longest unsigned integral type */
&builtin_type_error, /* longest floating point type */

7
gdb/language.h
View File

@ -108,6 +108,7 @@ struct language_defn {
void (*la_error) PARAMS ((char *)); /* Parser error function */
void (*la_printchar) PARAMS ((int, FILE *));
void (*la_printstr) PARAMS ((FILE *, char *, unsigned int, int));
struct type *(*la_fund_type) PARAMS ((struct objfile *, int));
struct type **la_longest_int; /* Longest signed integral type */
struct type **la_longest_unsigned_int; /* Longest uns integral type */
struct type **la_longest_float; /* Longest floating point type */
@ -176,6 +177,9 @@ set_language PARAMS ((enum language));
#define longest_unsigned_int() (*current_language->la_longest_unsigned_int)
#define longest_float() (*current_language->la_longest_float)
#define create_fundamental_type(objfile,typeid) \
(current_language->la_fund_type(objfile, typeid))
/* Return a format string for printf that will print a number in one of
the local (language-specific) formats. Result is static and is
overwritten by the next call. Takes printf options like "08" or "l"
@ -320,6 +324,9 @@ value_true PARAMS ((struct value *));
/* Misc: The string representing a particular enum language. */
extern const struct language_defn *
language_def PARAMS ((enum language));
extern char *
language_str PARAMS ((enum language));

159
gdb/m2-exp.y
View File

@ -1341,6 +1341,164 @@ m2_printstr (stream, string, length, force_ellipses)
fputs_filtered ("...", stream);
}
/* FIXME: This is a copy of c_create_fundamental_type(), before
all the non-C types were stripped from it. Needs to be fixed
by an experienced Modula programmer. */
static struct type *
m2_create_fundamental_type (objfile, typeid)
struct objfile *objfile;
int typeid;
{
register struct type *type = NULL;
register int nbytes;
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,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "<?type?>", objfile);
warning ("internal error: no Modula fundamental type %d", typeid);
break;
case FT_VOID:
type = init_type (TYPE_CODE_VOID,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "void", objfile);
break;
case FT_BOOLEAN:
type = init_type (TYPE_CODE_BOOL,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "boolean", objfile);
break;
case FT_STRING:
type = init_type (TYPE_CODE_PASCAL_ARRAY,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "string", objfile);
break;
case FT_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
0, "char", objfile);
break;
case FT_SIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "signed char", objfile);
break;
case FT_UNSIGNED_CHAR:
type = init_type (TYPE_CODE_INT,
TARGET_CHAR_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned char", objfile);
break;
case FT_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
0, "short", objfile);
break;
case FT_SIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "short", objfile); /* FIXME-fnf */
break;
case FT_UNSIGNED_SHORT:
type = init_type (TYPE_CODE_INT,
TARGET_SHORT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned short", objfile);
break;
case FT_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "int", objfile);
break;
case FT_SIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "int", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_INTEGER:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned int", objfile);
break;
case FT_FIXED_DECIMAL:
type = init_type (TYPE_CODE_INT,
TARGET_INT_BIT / TARGET_CHAR_BIT,
0, "fixed decimal", objfile);
break;
case FT_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
0, "long", objfile);
break;
case FT_SIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "long", objfile); /* FIXME -fnf */
break;
case FT_UNSIGNED_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long", objfile);
break;
case FT_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
0, "long long", objfile);
break;
case FT_SIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_SIGNED, "signed long long", objfile);
break;
case FT_UNSIGNED_LONG_LONG:
type = init_type (TYPE_CODE_INT,
TARGET_LONG_LONG_BIT / TARGET_CHAR_BIT,
TYPE_FLAG_UNSIGNED, "unsigned long long", objfile);
break;
case FT_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_FLOAT_BIT / TARGET_CHAR_BIT,
0, "float", objfile);
break;
case FT_DBL_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "double", objfile);
break;
case FT_FLOAT_DECIMAL:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "floating decimal", objfile);
break;
case FT_EXT_PREC_FLOAT:
type = init_type (TYPE_CODE_FLT,
TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT,
0, "long double", objfile);
break;
case FT_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_COMPLEX_BIT / TARGET_CHAR_BIT,
0, "complex", objfile);
break;
case FT_DBL_PREC_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
0, "double complex", objfile);
break;
case FT_EXT_PREC_COMPLEX:
type = init_type (TYPE_CODE_FLT,
TARGET_DOUBLE_COMPLEX_BIT / TARGET_CHAR_BIT,
0, "long double complex", objfile);
break;
}
return (type);
}
/* Table of operators and their precedences for printing expressions. */
@ -1396,6 +1554,7 @@ const struct language_defn m2_language_defn = {
m2_error, /* parser error function */
m2_printchar, /* Print character constant */
m2_printstr, /* function to print string constant */
m2_create_fundamental_type, /* Create fundamental type in this language */
&builtin_type_m2_int, /* longest signed integral type */
&builtin_type_m2_card, /* longest unsigned integral type */
&builtin_type_m2_real, /* longest floating point type */