/* DWARF debugging format support for GDB.
- Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1998
+ Free Software Foundation, Inc.
Written by Fred Fish at Cygnus Support. Portions based on dbxread.c,
mipsread.c, coffread.c, and dwarfread.c from a Data General SVR4 gdb port.
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
/*
-FIXME: Figure out how to get the frame pointer register number in the
-execution environment of the target. Remove R_FP kludge
+ FIXME: Do we need to generate dependencies in partial symtabs?
+ (Perhaps we don't need to).
-FIXME: Add generation of dependencies list to partial symtab code.
+ FIXME: Resolve minor differences between what information we put in the
+ partial symbol table and what dbxread puts in. For example, we don't yet
+ put enum constants there. And dbxread seems to invent a lot of typedefs
+ we never see. Use the new printpsym command to see the partial symbol table
+ contents.
-FIXME: Resolve minor differences between what information we put in the
-partial symbol table and what dbxread puts in. For example, we don't yet
-put enum constants there. And dbxread seems to invent a lot of typedefs
-we never see. Use the new printpsym command to see the partial symbol table
-contents.
+ FIXME: Figure out a better way to tell gdb about the name of the function
+ contain the user's entry point (I.E. main())
-FIXME: Figure out a better way to tell gdb about the name of the function
-contain the user's entry point (I.E. main())
+ FIXME: See other FIXME's and "ifdef 0" scattered throughout the code for
+ other things to work on, if you get bored. :-)
-FIXME: See other FIXME's and "ifdef 0" scattered throughout the code for
-other things to work on, if you get bored. :-)
-
-*/
+ */
#include "defs.h"
-#include <varargs.h>
-#include <fcntl.h>
-#include <string.h>
-
-#include "bfd.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "symfile.h"
#include "objfiles.h"
-#include "libbfd.h" /* FIXME Secret Internal BFD stuff (bfd_read) */
#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 "complaints.h"
-#ifdef MAINTENANCE /* Define to 1 to compile in some maintenance stuff */
-#define SQUAWK(stuff) dwarfwarn stuff
-#else
-#define SQUAWK(stuff)
-#endif
+#include <fcntl.h>
+#include "gdb_string.h"
-#ifndef R_FP /* FIXME */
-#define R_FP 14 /* Kludge to get frame pointer register number */
-#endif
+/* Some macros to provide DIE info for complaints. */
+
+#define DIE_ID (curdie!=NULL ? curdie->die_ref : 0)
+#define DIE_NAME (curdie!=NULL && curdie->at_name!=NULL) ? curdie->at_name : ""
+
+/* Complaints that can be issued during DWARF debug info reading. */
+
+struct complaint no_bfd_get_N =
+{
+ "DIE @ 0x%x \"%s\", no bfd support for %d byte data object", 0, 0
+};
+
+struct complaint malformed_die =
+{
+ "DIE @ 0x%x \"%s\", malformed DIE, bad length (%d bytes)", 0, 0
+};
+
+struct complaint bad_die_ref =
+{
+ "DIE @ 0x%x \"%s\", reference to DIE (0x%x) outside compilation unit", 0, 0
+};
+
+struct complaint unknown_attribute_form =
+{
+ "DIE @ 0x%x \"%s\", unknown attribute form (0x%x)", 0, 0
+};
+
+struct complaint unknown_attribute_length =
+{
+ "DIE @ 0x%x \"%s\", unknown attribute length, skipped remaining attributes", 0, 0
+};
+
+struct complaint unexpected_fund_type =
+{
+ "DIE @ 0x%x \"%s\", unexpected fundamental type 0x%x", 0, 0
+};
+
+struct complaint unknown_type_modifier =
+{
+ "DIE @ 0x%x \"%s\", unknown type modifier %u", 0, 0
+};
+
+struct complaint volatile_ignored =
+{
+ "DIE @ 0x%x \"%s\", type modifier 'volatile' ignored", 0, 0
+};
+
+struct complaint const_ignored =
+{
+ "DIE @ 0x%x \"%s\", type modifier 'const' ignored", 0, 0
+};
+
+struct complaint botched_modified_type =
+{
+ "DIE @ 0x%x \"%s\", botched modified type decoding (mtype 0x%x)", 0, 0
+};
+
+struct complaint op_deref2 =
+{
+ "DIE @ 0x%x \"%s\", OP_DEREF2 address 0x%x not handled", 0, 0
+};
+
+struct complaint op_deref4 =
+{
+ "DIE @ 0x%x \"%s\", OP_DEREF4 address 0x%x not handled", 0, 0
+};
+
+struct complaint basereg_not_handled =
+{
+ "DIE @ 0x%x \"%s\", BASEREG %d not handled", 0, 0
+};
+
+struct complaint dup_user_type_allocation =
+{
+ "DIE @ 0x%x \"%s\", internal error: duplicate user type allocation", 0, 0
+};
+
+struct complaint dup_user_type_definition =
+{
+ "DIE @ 0x%x \"%s\", internal error: duplicate user type definition", 0, 0
+};
+
+struct complaint missing_tag =
+{
+ "DIE @ 0x%x \"%s\", missing class, structure, or union tag", 0, 0
+};
+
+struct complaint bad_array_element_type =
+{
+ "DIE @ 0x%x \"%s\", bad array element type attribute 0x%x", 0, 0
+};
+
+struct complaint subscript_data_items =
+{
+ "DIE @ 0x%x \"%s\", can't decode subscript data items", 0, 0
+};
+
+struct complaint unhandled_array_subscript_format =
+{
+ "DIE @ 0x%x \"%s\", array subscript format 0x%x not handled yet", 0, 0
+};
+
+struct complaint unknown_array_subscript_format =
+{
+ "DIE @ 0x%x \"%s\", unknown array subscript format %x", 0, 0
+};
+
+struct complaint not_row_major =
+{
+ "DIE @ 0x%x \"%s\", array not row major; not handled correctly", 0, 0
+};
+
+struct complaint missing_at_name =
+{
+ "DIE @ 0x%x, AT_name tag missing", 0, 0
+};
typedef unsigned int DIE_REF; /* Reference to a DIE */
#define GCC_PRODUCER "GNU C "
#endif
-#define STREQ(a,b) (strcmp(a,b)==0)
-#define STREQN(a,b,n) (strncmp(a,b,n)==0)
+#ifndef GPLUS_PRODUCER
+#define GPLUS_PRODUCER "GNU C++ "
+#endif
+
+#ifndef LCC_PRODUCER
+#define LCC_PRODUCER "NCR C/C++"
+#endif
+
+#ifndef CHILL_PRODUCER
+#define CHILL_PRODUCER "GNU Chill "
+#endif
+
+/* Provide a default mapping from a DWARF register number to a gdb REGNUM. */
+#ifndef DWARF_REG_TO_REGNUM
+#define DWARF_REG_TO_REGNUM(num) (num)
+#endif
/* Flags to target_to_host() that tell whether or not the data object is
expected to be signed. Used, for example, when fetching a signed
/* External variables referenced. */
-extern int info_verbose; /* From main.c; nonzero => verbose */
-extern char *warning_pre_print; /* From utils.c */
+extern int info_verbose; /* From main.c; nonzero => verbose */
+extern char *warning_pre_print; /* From utils.c */
/* The DWARF debugging information consists of two major pieces,
one is a block of DWARF Information Entries (DIE's) and the other
we may want to test for the presence of some attributes in the DIE,
such as AT_low_pc, without restricting the values of the field,
we need someway to note that we found such an attribute.
-
+
*/
-
+
typedef char BLOCK;
-struct dieinfo {
- char * die; /* Pointer to the raw DIE data */
- unsigned long die_length; /* Length of the raw DIE data */
- DIE_REF die_ref; /* Offset of this DIE */
- unsigned short die_tag; /* Tag for this DIE */
- unsigned long at_padding;
- unsigned long at_sibling;
- BLOCK * at_location;
- char * at_name;
- unsigned short at_fund_type;
- BLOCK * at_mod_fund_type;
- unsigned long at_user_def_type;
- BLOCK * at_mod_u_d_type;
- unsigned short at_ordering;
- BLOCK * at_subscr_data;
- unsigned long at_byte_size;
- unsigned short at_bit_offset;
- unsigned long at_bit_size;
- BLOCK * at_element_list;
- unsigned long at_stmt_list;
- unsigned long at_low_pc;
- unsigned long at_high_pc;
- unsigned long at_language;
- unsigned long at_member;
- unsigned long at_discr;
- BLOCK * at_discr_value;
- unsigned short at_visibility;
- unsigned long at_import;
- BLOCK * at_string_length;
- char * at_comp_dir;
- char * at_producer;
- unsigned long at_frame_base;
- unsigned long at_start_scope;
- unsigned long at_stride_size;
- unsigned long at_src_info;
- char * at_prototyped;
- unsigned int has_at_low_pc:1;
- unsigned int has_at_stmt_list:1;
- unsigned int short_element_list:1;
-};
+struct dieinfo
+ {
+ char *die; /* Pointer to the raw DIE data */
+ unsigned long die_length; /* Length of the raw DIE data */
+ DIE_REF die_ref; /* Offset of this DIE */
+ unsigned short die_tag; /* Tag for this DIE */
+ unsigned long at_padding;
+ unsigned long at_sibling;
+ BLOCK *at_location;
+ char *at_name;
+ unsigned short at_fund_type;
+ BLOCK *at_mod_fund_type;
+ unsigned long at_user_def_type;
+ BLOCK *at_mod_u_d_type;
+ unsigned short at_ordering;
+ BLOCK *at_subscr_data;
+ unsigned long at_byte_size;
+ unsigned short at_bit_offset;
+ unsigned long at_bit_size;
+ BLOCK *at_element_list;
+ unsigned long at_stmt_list;
+ CORE_ADDR at_low_pc;
+ CORE_ADDR at_high_pc;
+ unsigned long at_language;
+ unsigned long at_member;
+ unsigned long at_discr;
+ BLOCK *at_discr_value;
+ BLOCK *at_string_length;
+ char *at_comp_dir;
+ char *at_producer;
+ unsigned long at_start_scope;
+ unsigned long at_stride_size;
+ unsigned long at_src_info;
+ char *at_prototyped;
+ unsigned int has_at_low_pc:1;
+ unsigned int has_at_stmt_list:1;
+ unsigned int has_at_byte_size:1;
+ unsigned int short_element_list:1;
+
+ /* Kludge to identify register variables */
+
+ unsigned int isreg;
+
+ /* Kludge to identify optimized out variables */
+
+ unsigned int optimized_out;
+
+ /* Kludge to identify basereg references.
+ Nonzero if we have an offset relative to a basereg. */
+
+ unsigned int offreg;
+
+ /* Kludge to identify which base register is it relative to. */
+
+ unsigned int basereg;
+ };
-static int diecount; /* Approximate count of dies for compilation unit */
+static int diecount; /* Approximate count of dies for compilation unit */
static struct dieinfo *curdie; /* For warnings and such */
-static char *dbbase; /* Base pointer to dwarf info */
-static int dbroff; /* Relative offset from start of .debug section */
-static char *lnbase; /* Base pointer to line section */
-static int isreg; /* Kludge to identify register variables */
-static int offreg; /* Kludge to identify basereg references */
+static char *dbbase; /* Base pointer to dwarf info */
+static int dbsize; /* Size of dwarf info in bytes */
+static int dbroff; /* Relative offset from start of .debug section */
+static char *lnbase; /* Base pointer to line section */
+/* This value is added to each symbol value. FIXME: Generalize to
+ the section_offsets structure used by dbxread (once this is done,
+ pass the appropriate section number to end_symtab). */
static CORE_ADDR baseaddr; /* Add to each symbol value */
-/* Each partial symbol table entry contains a pointer to private data for the
- read_symtab() function to use when expanding a partial symbol table entry
- to a full symbol table entry. For DWARF debugging info, this data is
- contained in the following structure and macros are provided for easy
- access to the members given a pointer to a partial symbol table entry.
-
- dbfoff Always the absolute file offset to the start of the ".debug"
- section for the file containing the DIE's being accessed.
-
- dbroff Relative offset from the start of the ".debug" access to the
- first DIE to be accessed. When building the partial symbol
- table, this value will be zero since we are accessing the
- entire ".debug" section. When expanding a partial symbol
- table entry, this value will be the offset to the first
- DIE for the compilation unit containing the symbol that
- triggers the expansion.
-
- dblength The size of the chunk of DIE's being examined, in bytes.
-
- lnfoff The absolute file offset to the line table fragment. Ignored
- when building partial symbol tables, but used when expanding
- them, and contains the absolute file offset to the fragment
- of the ".line" section containing the line numbers for the
- current compilation unit.
- */
-
-struct dwfinfo {
- int dbfoff; /* Absolute file offset to start of .debug section */
- int dbroff; /* Relative offset from start of .debug section */
- int dblength; /* Size of the chunk of DIE's being examined */
- int lnfoff; /* Absolute file offset to line table fragment */
-};
+/* The section offsets used in the current psymtab or symtab. FIXME,
+ only used to pass one value (baseaddr) at the moment. */
+static struct section_offsets *base_section_offsets;
+
+/* We put a pointer to this structure in the read_symtab_private field
+ of the psymtab. */
+
+struct dwfinfo
+ {
+ /* Always the absolute file offset to the start of the ".debug"
+ section for the file containing the DIE's being accessed. */
+ file_ptr dbfoff;
+ /* Relative offset from the start of the ".debug" section to the
+ first DIE to be accessed. When building the partial symbol
+ table, this value will be zero since we are accessing the
+ entire ".debug" section. When expanding a partial symbol
+ table entry, this value will be the offset to the first
+ DIE for the compilation unit containing the symbol that
+ triggers the expansion. */
+ int dbroff;
+ /* The size of the chunk of DIE's being examined, in bytes. */
+ int dblength;
+ /* The absolute file offset to the line table fragment. Ignored
+ when building partial symbol tables, but used when expanding
+ them, and contains the absolute file offset to the fragment
+ of the ".line" section containing the line numbers for the
+ current compilation unit. */
+ file_ptr lnfoff;
+ };
#define DBFOFF(p) (((struct dwfinfo *)((p)->read_symtab_private))->dbfoff)
#define DBROFF(p) (((struct dwfinfo *)((p)->read_symtab_private))->dbroff)
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. 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. */
+static void
+free_utypes PARAMS ((PTR));
+
static int
attribute_size PARAMS ((unsigned int));
-static unsigned long
-target_to_host PARAMS ((char *, int, int, struct objfile *));
+static CORE_ADDR
+ target_to_host PARAMS ((char *, int, int, struct objfile *));
static void
add_enum_psymbol PARAMS ((struct dieinfo *, struct objfile *));
+static void
+handle_producer PARAMS ((char *));
+
static void
read_file_scope PARAMS ((struct dieinfo *, char *, char *, struct objfile *));
read_lexical_block_scope PARAMS ((struct dieinfo *, char *, char *,
struct objfile *));
-static void
-dwarfwarn ();
-
static void
scan_partial_symbols PARAMS ((char *, char *, struct objfile *));
static void
-scan_compilation_units PARAMS ((char *, char *, char *, unsigned int,
- unsigned int, struct objfile *));
+scan_compilation_units PARAMS ((char *, char *, file_ptr,
+ file_ptr, struct objfile *));
static void
add_partial_symbol PARAMS ((struct dieinfo *, struct objfile *));
-static void
-init_psymbol_list PARAMS ((struct objfile *, int));
-
static void
basicdieinfo PARAMS ((struct dieinfo *, char *, struct objfile *));
static void
psymtab_to_symtab_1 PARAMS ((struct partial_symtab *));
-static struct symtab *
+static void
read_ofile_symtab PARAMS ((struct partial_symtab *));
static void
struct objfile *));
static struct type *
-decode_array_element_type PARAMS ((char *));
+ decode_array_element_type PARAMS ((char *));
static struct type *
-decode_subscr_data PARAMS ((char *, char *));
+ decode_subscript_data_item PARAMS ((char *, char *));
static void
dwarf_read_array_type PARAMS ((struct dieinfo *));
static void
-read_tag_pointer_type PARAMS ((struct dieinfo *dip));
+read_tag_pointer_type PARAMS ((struct dieinfo * dip));
+
+static void
+read_tag_string_type PARAMS ((struct dieinfo * dip));
static void
read_subroutine_type PARAMS ((struct dieinfo *, char *, char *));
read_enumeration PARAMS ((struct dieinfo *, char *, char *, struct objfile *));
static struct type *
-struct_type PARAMS ((struct dieinfo *, char *, char *, struct objfile *));
+ struct_type PARAMS ((struct dieinfo *, char *, char *, struct objfile *));
static struct type *
-enum_type PARAMS ((struct dieinfo *, struct objfile *));
+ enum_type PARAMS ((struct dieinfo *, struct objfile *));
static void
decode_line_numbers PARAMS ((char *));
static struct type *
-decode_die_type PARAMS ((struct dieinfo *));
+ decode_die_type PARAMS ((struct dieinfo *));
static struct type *
-decode_mod_fund_type PARAMS ((char *));
+ decode_mod_fund_type PARAMS ((char *));
static struct type *
-decode_mod_u_d_type PARAMS ((char *));
+ decode_mod_u_d_type PARAMS ((char *));
static struct type *
-decode_modified_type PARAMS ((unsigned char *, unsigned int, int));
+ decode_modified_type PARAMS ((char *, unsigned int, int));
static struct type *
-decode_fund_type PARAMS ((unsigned int));
+ decode_fund_type PARAMS ((unsigned int));
static char *
-create_name PARAMS ((char *, struct obstack *));
+ create_name PARAMS ((char *, struct obstack *));
static struct type *
-lookup_utype PARAMS ((DIE_REF));
+ lookup_utype PARAMS ((DIE_REF));
static struct type *
-alloc_utype PARAMS ((DIE_REF, struct type *));
+ alloc_utype PARAMS ((DIE_REF, struct type *));
static struct symbol *
-new_symbol PARAMS ((struct dieinfo *, struct objfile *));
+ new_symbol PARAMS ((struct dieinfo *, struct objfile *));
+
+static void
+synthesize_typedef PARAMS ((struct dieinfo *, struct objfile *,
+ struct type *));
static int
-locval PARAMS ((char *));
+locval PARAMS ((struct dieinfo *));
static void
-record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type,
- struct objfile *));
+set_cu_language PARAMS ((struct dieinfo *));
+
+static struct type *
+ dwarf_fundamental_type PARAMS ((struct objfile *, int));
+
/*
-GLOBAL FUNCTION
+ LOCAL FUNCTION
- dwarf_build_psymtabs -- build partial symtabs from DWARF debug info
+ dwarf_fundamental_type -- lookup or create a fundamental type
-SYNOPSIS
+ SYNOPSIS
- void dwarf_build_psymtabs (int desc, char *filename, CORE_ADDR addr,
- int mainline, unsigned int dbfoff, unsigned int dbsize,
- unsigned int lnoffset, unsigned int lnsize,
- struct objfile *objfile)
+ struct type *
+ dwarf_fundamental_type (struct objfile *objfile, int typeid)
-DESCRIPTION
+ DESCRIPTION
- This function is called upon to build partial symtabs from files
- containing DIE's (Dwarf Information Entries) and DWARF line numbers.
+ 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.
- It is passed a file descriptor for an open file containing the DIES
- and line number information, the corresponding filename for that
- file, a base address for relocating the symbols, a flag indicating
- whether or not this debugging information is from a "main symbol
- table" rather than a shared library or dynamically linked file,
- and file offset/size pairs for the DIE information and line number
- information.
+ 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
+ RETURNS
- No return value.
+ Pointer to a fundamental type.
*/
-void
-dwarf_build_psymtabs (desc, filename, addr, mainline, dbfoff, dbsize,
- lnoffset, lnsize, objfile)
- int desc;
- char *filename;
- CORE_ADDR addr;
- int mainline;
- unsigned int dbfoff;
- unsigned int dbsize;
- unsigned int lnoffset;
- unsigned int lnsize;
+static struct type *
+dwarf_fundamental_type (objfile, typeid)
struct objfile *objfile;
+ int typeid;
{
- struct cleanup *back_to;
-
- current_objfile = objfile;
- dbbase = xmalloc (dbsize);
- dbroff = 0;
- if ((lseek (desc, dbfoff, 0) != dbfoff) ||
- (read (desc, dbbase, dbsize) != dbsize))
+ if (typeid < 0 || typeid >= FT_NUM_MEMBERS)
{
- free (dbbase);
- error ("can't read DWARF data from '%s'", filename);
+ error ("internal error - invalid fundamental type id %d", typeid);
}
- back_to = make_cleanup (free, dbbase);
-
- /* If we are reinitializing, or if we have never loaded syms yet, init.
- Since we have no idea how many DIES we are looking at, we just guess
- some arbitrary value. */
-
- if (mainline || objfile -> global_psymbols.size == 0 ||
- objfile -> static_psymbols.size == 0)
+
+ /* 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)
{
- init_psymbol_list (objfile, 1024);
+ ftypes[typeid] = cu_language_defn->la_fund_type (objfile, typeid);
}
-
- /* Save the relocation factor where everybody can see it. */
-
- baseaddr = addr;
- /* Follow the compilation unit sibling chain, building a partial symbol
- table entry for each one. Save enough information about each compilation
- unit to locate the full DWARF information later. */
-
- scan_compilation_units (filename, dbbase, dbbase + dbsize,
- dbfoff, lnoffset, objfile);
-
- do_cleanups (back_to);
- current_objfile = NULL;
+ return (ftypes[typeid]);
}
-
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- record_minimal_symbol -- add entry to gdb's minimal symbol table
+ set_cu_language -- set local copy of language for compilation unit
-SYNOPSIS
+ SYNOPSIS
- static void record_minimal_symbol (char *name, CORE_ADDR address,
- enum minimal_symbol_type ms_type,
- struct objfile *objfile)
+ void
+ set_cu_language (struct dieinfo *dip)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to the name of a symbol that should be added to the
- minimal symbol table, and the address associated with that
- symbol, records this information for later use in building the
- minimal symbol table.
+ Decode the language attribute for a compilation unit DIE and
+ remember what the language was. We use this at various times
+ when processing DIE's for a given compilation unit.
+
+ RETURNS
+
+ No return value.
*/
static void
-record_minimal_symbol (name, address, ms_type, objfile)
- char *name;
- CORE_ADDR address;
- enum minimal_symbol_type ms_type;
- struct objfile *objfile;
+set_cu_language (dip)
+ struct dieinfo *dip;
{
- name = obsavestring (name, strlen (name), &objfile -> symbol_obstack);
- prim_record_minimal_symbol (name, address, ms_type);
+ switch (dip->at_language)
+ {
+ case LANG_C89:
+ case LANG_C:
+ cu_language = language_c;
+ break;
+ case LANG_C_PLUS_PLUS:
+ cu_language = language_cplus;
+ break;
+ case LANG_CHILL:
+ cu_language = language_chill;
+ break;
+ case LANG_MODULA2:
+ cu_language = language_m2;
+ break;
+ case LANG_FORTRAN77:
+ case LANG_FORTRAN90:
+ cu_language = language_fortran;
+ break;
+ case LANG_ADA83:
+ case LANG_COBOL74:
+ case LANG_COBOL85:
+ case LANG_PASCAL83:
+ /* We don't know anything special about these yet. */
+ cu_language = language_unknown;
+ break;
+ default:
+ /* If no at_language, try to deduce one from the filename */
+ cu_language = deduce_language_from_filename (dip->at_name);
+ break;
+ }
+ cu_language_defn = language_def (cu_language);
}
/*
-LOCAL FUNCTION
+ GLOBAL FUNCTION
- dwarfwarn -- issue a DWARF related warning
+ dwarf_build_psymtabs -- build partial symtabs from DWARF debug info
-DESCRIPTION
+ SYNOPSIS
- Issue warnings about DWARF related things that aren't serious enough
- to warrant aborting with an error, but should not be ignored either.
- This includes things like detectable corruption in DIE's, missing
- DIE's, unimplemented features, etc.
+ void dwarf_build_psymtabs (struct objfile *objfile,
+ int mainline, file_ptr dbfoff, unsigned int dbfsize,
+ file_ptr lnoffset, unsigned int lnsize)
- In general, running across tags or attributes that we don't recognize
- is not considered to be a problem and we should not issue warnings
- about such.
+ DESCRIPTION
-NOTES
+ This function is called upon to build partial symtabs from files
+ containing DIE's (Dwarf Information Entries) and DWARF line numbers.
- We mostly follow the example of the error() routine, but without
- returning to command level. It is arguable about whether warnings
- should be issued at all, and if so, where they should go (stdout or
- stderr).
+ It is passed a bfd* containing the DIES
+ and line number information, the corresponding filename for that
+ file, a base address for relocating the symbols, a flag indicating
+ whether or not this debugging information is from a "main symbol
+ table" rather than a shared library or dynamically linked file,
+ and file offset/size pairs for the DIE information and line number
+ information.
- We assume that curdie is valid and contains at least the basic
- information for the DIE where the problem was noticed.
-*/
+ RETURNS
-static void
-dwarfwarn (va_alist)
- va_dcl
-{
- va_list ap;
- char *fmt;
-
- va_start (ap);
- fmt = va_arg (ap, char *);
- warning_setup ();
- fprintf (stderr, "warning: DWARF ref 0x%x: ", curdie -> die_ref);
- if (curdie -> at_name)
- {
- fprintf (stderr, "'%s': ", curdie -> at_name);
- }
- vfprintf (stderr, fmt, ap);
- fprintf (stderr, "\n");
- fflush (stderr);
- va_end (ap);
+ No return value.
+
+ */
+
+void
+dwarf_build_psymtabs (objfile, mainline, dbfoff, dbfsize,
+ lnoffset, lnsize)
+ struct objfile *objfile;
+ int mainline;
+ file_ptr dbfoff;
+ unsigned int dbfsize;
+ file_ptr lnoffset;
+ unsigned int lnsize;
+{
+ bfd *abfd = objfile->obfd;
+ struct cleanup *back_to;
+
+ current_objfile = objfile;
+ dbsize = dbfsize;
+ dbbase = xmalloc (dbsize);
+ dbroff = 0;
+ if ((bfd_seek (abfd, dbfoff, SEEK_SET) != 0) ||
+ (bfd_read (dbbase, dbsize, 1, abfd) != dbsize))
+ {
+ free (dbbase);
+ error ("can't read DWARF data from '%s'", bfd_get_filename (abfd));
+ }
+ back_to = make_cleanup (free, dbbase);
+
+ /* If we are reinitializing, or if we have never loaded syms yet, init.
+ Since we have no idea how many DIES we are looking at, we just guess
+ some arbitrary value. */
+
+ if (mainline || objfile->global_psymbols.size == 0 ||
+ objfile->static_psymbols.size == 0)
+ {
+ init_psymbol_list (objfile, 1024);
+ }
+
+ /* Save the relocation factor where everybody can see it. */
+
+ base_section_offsets = objfile->section_offsets;
+ baseaddr = ANOFFSET (objfile->section_offsets, 0);
+
+ /* Follow the compilation unit sibling chain, building a partial symbol
+ table entry for each one. Save enough information about each compilation
+ unit to locate the full DWARF information later. */
+
+ scan_compilation_units (dbbase, dbbase + dbsize, dbfoff, lnoffset, objfile);
+
+ do_cleanups (back_to);
+ current_objfile = NULL;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_lexical_block_scope -- process all dies in a lexical block
+ read_lexical_block_scope -- process all dies in a lexical block
-SYNOPSIS
+ SYNOPSIS
- static void read_lexical_block_scope (struct dieinfo *dip,
- char *thisdie, char *enddie)
+ static void read_lexical_block_scope (struct dieinfo *dip,
+ char *thisdie, char *enddie)
-DESCRIPTION
+ DESCRIPTION
- Process all the DIES contained within a lexical block scope.
- Start a new scope, process the dies, and then close the scope.
+ Process all the DIES contained within a lexical block scope.
+ Start a new scope, process the dies, and then close the scope.
*/
{
register struct context_stack *new;
- (void) push_context (0, dip -> at_low_pc);
- process_dies (thisdie + dip -> die_length, enddie, objfile);
+ push_context (0, dip->at_low_pc);
+ process_dies (thisdie + dip->die_length, enddie, objfile);
new = pop_context ();
if (local_symbols != NULL)
{
- finish_block (0, &local_symbols, new -> old_blocks, new -> start_addr,
- dip -> at_high_pc, objfile);
+ finish_block (0, &local_symbols, new->old_blocks, new->start_addr,
+ dip->at_high_pc, objfile);
}
- local_symbols = new -> locals;
+ local_symbols = new->locals;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- lookup_utype -- look up a user defined type from die reference
+ lookup_utype -- look up a user defined type from die reference
-SYNOPSIS
+ SYNOPSIS
- static type *lookup_utype (DIE_REF die_ref)
+ static type *lookup_utype (DIE_REF die_ref)
-DESCRIPTION
+ DESCRIPTION
- Given a DIE reference, lookup the user defined type associated with
- that DIE, if it has been registered already. If not registered, then
- return NULL. Alloc_utype() can be called to register an empty
- type for this reference, which will be filled in later when the
- actual referenced DIE is processed.
+ Given a DIE reference, lookup the user defined type associated with
+ that DIE, if it has been registered already. If not registered, then
+ return NULL. Alloc_utype() can be called to register an empty
+ type for this reference, which will be filled in later when the
+ actual referenced DIE is processed.
*/
static struct type *
{
struct type *type = NULL;
int utypeidx;
-
+
utypeidx = (die_ref - dbroff) / 4;
if ((utypeidx < 0) || (utypeidx >= numutypes))
{
- dwarfwarn ("reference to DIE (0x%x) outside compilation unit", die_ref);
+ complain (&bad_die_ref, DIE_ID, DIE_NAME);
}
else
{
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- alloc_utype -- add a user defined type for die reference
+ alloc_utype -- add a user defined type for die reference
-SYNOPSIS
+ SYNOPSIS
- static type *alloc_utype (DIE_REF die_ref, struct type *utypep)
+ static type *alloc_utype (DIE_REF die_ref, struct type *utypep)
-DESCRIPTION
+ DESCRIPTION
- Given a die reference DIE_REF, and a possible pointer to a user
- defined type UTYPEP, register that this reference has a user
- defined type and either use the specified type in UTYPEP or
- make a new empty type that will be filled in later.
+ Given a die reference DIE_REF, and a possible pointer to a user
+ defined type UTYPEP, register that this reference has a user
+ defined type and either use the specified type in UTYPEP or
+ make a new empty type that will be filled in later.
- We should only be called after calling lookup_utype() to verify that
- there is not currently a type registered for DIE_REF.
+ We should only be called after calling lookup_utype() to verify that
+ there is not currently a type registered for DIE_REF.
*/
static struct type *
{
struct type **typep;
int utypeidx;
-
+
utypeidx = (die_ref - dbroff) / 4;
typep = utypes + utypeidx;
if ((utypeidx < 0) || (utypeidx >= numutypes))
{
- utypep = lookup_fundamental_type (current_objfile, FT_INTEGER);
- dwarfwarn ("reference to DIE (0x%x) outside compilation unit", die_ref);
+ utypep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ complain (&bad_die_ref, DIE_ID, DIE_NAME);
}
else if (*typep != NULL)
{
utypep = *typep;
- SQUAWK (("internal error: dup user type allocation"));
+ complain (&dup_user_type_allocation, DIE_ID, DIE_NAME);
}
else
{
if (utypep == NULL)
{
- utypep = (struct type *)
- obstack_alloc (¤t_objfile -> type_obstack,
- sizeof (struct type));
- (void) memset (utypep, 0, sizeof (struct type));
- TYPE_OBJFILE (utypep) = current_objfile;
+ utypep = alloc_type (current_objfile);
}
*typep = utypep;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_die_type -- return a type for a specified die
+ free_utypes -- free the utypes array and reset pointer & count
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_die_type (struct dieinfo *dip)
+ static void free_utypes (PTR dummy)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to a die information structure DIP, decode the
- type of the die and return a pointer to the decoded type. All
- dies without specific types default to type int.
+ Called via do_cleanups to free the utypes array, reset the pointer to NULL,
+ and set numutypes back to zero. This ensures that the utypes does not get
+ referenced after being freed.
+ */
+
+static void
+free_utypes (dummy)
+ PTR dummy;
+{
+ free (utypes);
+ utypes = NULL;
+ numutypes = 0;
+}
+
+
+/*
+
+ LOCAL FUNCTION
+
+ decode_die_type -- return a type for a specified die
+
+ SYNOPSIS
+
+ static struct type *decode_die_type (struct dieinfo *dip)
+
+ DESCRIPTION
+
+ Given a pointer to a die information structure DIP, decode the
+ type of the die and return a pointer to the decoded type. All
+ dies without specific types default to type int.
*/
static struct type *
struct dieinfo *dip;
{
struct type *type = NULL;
-
- if (dip -> at_fund_type != 0)
+
+ if (dip->at_fund_type != 0)
{
- type = decode_fund_type (dip -> at_fund_type);
+ type = decode_fund_type (dip->at_fund_type);
}
- else if (dip -> at_mod_fund_type != NULL)
+ else if (dip->at_mod_fund_type != NULL)
{
- type = decode_mod_fund_type (dip -> at_mod_fund_type);
+ type = decode_mod_fund_type (dip->at_mod_fund_type);
}
- else if (dip -> at_user_def_type)
+ else if (dip->at_user_def_type)
{
- if ((type = lookup_utype (dip -> at_user_def_type)) == NULL)
+ if ((type = lookup_utype (dip->at_user_def_type)) == NULL)
{
- type = alloc_utype (dip -> at_user_def_type, NULL);
+ type = alloc_utype (dip->at_user_def_type, NULL);
}
}
- else if (dip -> at_mod_u_d_type)
+ else if (dip->at_mod_u_d_type)
{
- type = decode_mod_u_d_type (dip -> at_mod_u_d_type);
+ type = decode_mod_u_d_type (dip->at_mod_u_d_type);
}
else
{
- type = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ type = dwarf_fundamental_type (current_objfile, FT_VOID);
}
return (type);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- struct_type -- compute and return the type for a struct or union
+ struct_type -- compute and return the type for a struct or union
-SYNOPSIS
+ SYNOPSIS
- static struct type *struct_type (struct dieinfo *dip, char *thisdie,
- char *enddie, struct objfile *objfile)
+ static struct type *struct_type (struct dieinfo *dip, char *thisdie,
+ char *enddie, struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given pointer to a die information structure for a die which
- defines a union or structure (and MUST define one or the other),
- and pointers to the raw die data that define the range of dies which
- define the members, compute and return the user defined type for the
- structure or union.
+ Given pointer to a die information structure for a die which
+ defines a union or structure (and MUST define one or the other),
+ and pointers to the raw die data that define the range of dies which
+ define the members, compute and return the user defined type for the
+ structure or union.
*/
static struct type *
struct objfile *objfile;
{
struct type *type;
- struct nextfield {
- struct nextfield *next;
- struct field field;
- };
+ struct nextfield
+ {
+ struct nextfield *next;
+ struct field field;
+ };
struct nextfield *list = NULL;
struct nextfield *new;
int nfields = 0;
int n;
- char *tpart1;
struct dieinfo mbr;
char *nextdie;
-
- if ((type = lookup_utype (dip -> die_ref)) == NULL)
+ int anonymous_size;
+
+ if ((type = lookup_utype (dip->die_ref)) == NULL)
{
/* No forward references created an empty type, so install one now */
- type = alloc_utype (dip -> die_ref, NULL);
+ type = alloc_utype (dip->die_ref, NULL);
}
- INIT_CPLUS_SPECIFIC(type);
- switch (dip -> die_tag)
+ INIT_CPLUS_SPECIFIC (type);
+ switch (dip->die_tag)
{
- case TAG_structure_type:
- TYPE_CODE (type) = TYPE_CODE_STRUCT;
- tpart1 = "struct";
- break;
- case TAG_union_type:
- TYPE_CODE (type) = TYPE_CODE_UNION;
- tpart1 = "union";
- break;
- default:
- /* Should never happen */
- TYPE_CODE (type) = TYPE_CODE_UNDEF;
- tpart1 = "???";
- SQUAWK (("missing structure or union tag"));
- break;
+ case TAG_class_type:
+ TYPE_CODE (type) = TYPE_CODE_CLASS;
+ break;
+ case TAG_structure_type:
+ TYPE_CODE (type) = TYPE_CODE_STRUCT;
+ break;
+ case TAG_union_type:
+ TYPE_CODE (type) = TYPE_CODE_UNION;
+ break;
+ default:
+ /* Should never happen */
+ TYPE_CODE (type) = TYPE_CODE_UNDEF;
+ complain (&missing_tag, DIE_ID, DIE_NAME);
+ break;
}
/* Some compilers try to be helpful by inventing "fake" names for
anonymous enums, structures, and unions, like "~0fake" or ".0fake".
Thanks, but no thanks... */
- if (dip -> at_name != NULL
- && *dip -> at_name != '~'
- && *dip -> at_name != '.')
- {
- TYPE_NAME (type) = obconcat (&objfile -> type_obstack,
- tpart1, " ", dip -> at_name);
- }
- if (dip -> at_byte_size != 0)
- {
- TYPE_LENGTH (type) = dip -> at_byte_size;
- }
- thisdie += dip -> die_length;
+ if (dip->at_name != NULL
+ && *dip->at_name != '~'
+ && *dip->at_name != '.')
+ {
+ TYPE_TAG_NAME (type) = obconcat (&objfile->type_obstack,
+ "", "", dip->at_name);
+ }
+ /* Use whatever size is known. Zero is a valid size. We might however
+ wish to check has_at_byte_size to make sure that some byte size was
+ given explicitly, but DWARF doesn't specify that explicit sizes of
+ zero have to present, so complaining about missing sizes should
+ probably not be the default. */
+ TYPE_LENGTH (type) = dip->at_byte_size;
+ thisdie += dip->die_length;
while (thisdie < enddie)
{
basicdieinfo (&mbr, thisdie, objfile);
case TAG_member:
/* Get space to record the next field's data. */
new = (struct nextfield *) alloca (sizeof (struct nextfield));
- new -> next = list;
+ new->next = list;
list = new;
/* Save the data. */
- list -> field.name = savestring (mbr.at_name, strlen (mbr.at_name));
- list -> field.type = decode_die_type (&mbr);
- list -> field.bitpos = 8 * locval (mbr.at_location);
+ list->field.name =
+ obsavestring (mbr.at_name, strlen (mbr.at_name),
+ &objfile->type_obstack);
+ FIELD_TYPE (list->field) = decode_die_type (&mbr);
+ FIELD_BITPOS (list->field) = 8 * locval (&mbr);
/* Handle bit fields. */
- list -> field.bitsize = mbr.at_bit_size;
-#if BITS_BIG_ENDIAN
- /* For big endian bits, the at_bit_offset gives the additional
- bit offset from the MSB of the containing anonymous object to
- the MSB of the field. We don't have to do anything special
- since we don't need to know the size of the anonymous object. */
- list -> field.bitpos += mbr.at_bit_offset;
-#else
- /* For little endian bits, we need to have a non-zero at_bit_size,
- so that we know we are in fact dealing with a bitfield. Compute
- the bit offset to the MSB of the anonymous object, subtract off
- the number of bits from the MSB of the field to the MSB of the
- object, and then subtract off the number of bits of the field
- itself. The result is the bit offset of the LSB of the field. */
- if (mbr.at_bit_size > 0)
+ FIELD_BITSIZE (list->field) = mbr.at_bit_size;
+ if (BITS_BIG_ENDIAN)
{
- list -> field.bitpos +=
- mbr.at_byte_size * 8 - mbr.at_bit_offset - mbr.at_bit_size;
+ /* For big endian bits, the at_bit_offset gives the
+ additional bit offset from the MSB of the containing
+ anonymous object to the MSB of the field. We don't
+ have to do anything special since we don't need to
+ know the size of the anonymous object. */
+ FIELD_BITPOS (list->field) += mbr.at_bit_offset;
+ }
+ else
+ {
+ /* For little endian bits, we need to have a non-zero
+ at_bit_size, so that we know we are in fact dealing
+ with a bitfield. Compute the bit offset to the MSB
+ of the anonymous object, subtract off the number of
+ bits from the MSB of the field to the MSB of the
+ object, and then subtract off the number of bits of
+ the field itself. The result is the bit offset of
+ the LSB of the field. */
+ if (mbr.at_bit_size > 0)
+ {
+ if (mbr.has_at_byte_size)
+ {
+ /* The size of the anonymous object containing
+ the bit field is explicit, so use the
+ indicated size (in bytes). */
+ anonymous_size = mbr.at_byte_size;
+ }
+ else
+ {
+ /* The size of the anonymous object containing
+ the bit field matches the size of an object
+ of the bit field's type. DWARF allows
+ at_byte_size to be left out in such cases, as
+ a debug information size optimization. */
+ anonymous_size = TYPE_LENGTH (list->field.type);
+ }
+ FIELD_BITPOS (list->field) +=
+ anonymous_size * 8 - mbr.at_bit_offset - mbr.at_bit_size;
+ }
}
-#endif
nfields++;
break;
default:
{
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
- obstack_alloc (&objfile -> type_obstack,
- sizeof (struct field) * nfields);
+ TYPE_ALLOC (type, sizeof (struct field) * nfields);
/* Copy the saved-up fields into the field vector. */
- for (n = nfields; list; list = list -> next)
+ for (n = nfields; list; list = list->next)
{
- TYPE_FIELD (type, --n) = list -> field;
- }
+ TYPE_FIELD (type, --n) = list->field;
+ }
}
return (type);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_structure_scope -- process all dies within struct or union
+ read_structure_scope -- process all dies within struct or union
-SYNOPSIS
+ SYNOPSIS
- static void read_structure_scope (struct dieinfo *dip,
- char *thisdie, char *enddie, struct objfile *objfile)
+ static void read_structure_scope (struct dieinfo *dip,
+ char *thisdie, char *enddie, struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Called when we find the DIE that starts a structure or union
- scope (definition) to process all dies that define the members
- of the structure or union. DIP is a pointer to the die info
- struct for the DIE that names the structure or union.
+ Called when we find the DIE that starts a structure or union
+ scope (definition) to process all dies that define the members
+ of the structure or union. DIP is a pointer to the die info
+ struct for the DIE that names the structure or union.
-NOTES
+ NOTES
+
+ Note that we need to call struct_type regardless of whether or not
+ the DIE has an at_name attribute, since it might be an anonymous
+ structure or union. This gets the type entered into our set of
+ user defined types.
+
+ However, if the structure is incomplete (an opaque struct/union)
+ then suppress creating a symbol table entry for it since gdb only
+ wants to find the one with the complete definition. Note that if
+ it is complete, we just call new_symbol, which does it's own
+ checking about whether the struct/union is anonymous or not (and
+ suppresses creating a symbol table entry itself).
- Note that we need to call struct_type regardless of whether or not
- the DIE has an at_name attribute, since it might be an anonymous
- structure or union. This gets the type entered into our set of
- user defined types.
-
- However, if the structure is incomplete (an opaque struct/union)
- then suppress creating a symbol table entry for it since gdb only
- wants to find the one with the complete definition. Note that if
- it is complete, we just call new_symbol, which does it's own
- checking about whether the struct/union is anonymous or not (and
- suppresses creating a symbol table entry itself).
-
*/
static void
{
struct type *type;
struct symbol *sym;
-
+
type = struct_type (dip, thisdie, enddie, objfile);
if (!(TYPE_FLAGS (type) & TYPE_FLAG_STUB))
{
- if ((sym = new_symbol (dip, objfile)) != NULL)
+ sym = new_symbol (dip, objfile);
+ if (sym != NULL)
{
SYMBOL_TYPE (sym) = type;
+ if (cu_language == language_cplus)
+ {
+ synthesize_typedef (dip, objfile, type);
+ }
}
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_array_element_type -- decode type of the array elements
+ decode_array_element_type -- decode type of the array elements
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_array_element_type (char *scan, char *end)
+ static struct type *decode_array_element_type (char *scan, char *end)
-DESCRIPTION
+ DESCRIPTION
- As the last step in decoding the array subscript information for an
- array DIE, we need to decode the type of the array elements. We are
- passed a pointer to this last part of the subscript information and
- must return the appropriate type. If the type attribute is not
- recognized, just warn about the problem and return type int.
+ As the last step in decoding the array subscript information for an
+ array DIE, we need to decode the type of the array elements. We are
+ passed a pointer to this last part of the subscript information and
+ must return the appropriate type. If the type attribute is not
+ recognized, just warn about the problem and return type int.
*/
static struct type *
unsigned short attribute;
unsigned short fundtype;
int nbytes;
-
+
attribute = target_to_host (scan, SIZEOF_ATTRIBUTE, GET_UNSIGNED,
current_objfile);
scan += SIZEOF_ATTRIBUTE;
if ((nbytes = attribute_size (attribute)) == -1)
{
- SQUAWK (("bad array element type attribute 0x%x", attribute));
- typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ complain (&bad_array_element_type, DIE_ID, DIE_NAME, attribute);
+ typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
}
else
{
switch (attribute)
{
- case AT_fund_type:
- fundtype = target_to_host (scan, nbytes, GET_UNSIGNED,
- current_objfile);
- typep = decode_fund_type (fundtype);
- break;
- case AT_mod_fund_type:
- typep = decode_mod_fund_type (scan);
- break;
- case AT_user_def_type:
- die_ref = target_to_host (scan, nbytes, GET_UNSIGNED,
- current_objfile);
- if ((typep = lookup_utype (die_ref)) == NULL)
- {
- typep = alloc_utype (die_ref, NULL);
- }
- break;
- case AT_mod_u_d_type:
- typep = decode_mod_u_d_type (scan);
- break;
- default:
- SQUAWK (("bad array element type attribute 0x%x", attribute));
- typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
- break;
- }
+ case AT_fund_type:
+ fundtype = target_to_host (scan, nbytes, GET_UNSIGNED,
+ current_objfile);
+ typep = decode_fund_type (fundtype);
+ break;
+ case AT_mod_fund_type:
+ typep = decode_mod_fund_type (scan);
+ break;
+ case AT_user_def_type:
+ die_ref = target_to_host (scan, nbytes, GET_UNSIGNED,
+ current_objfile);
+ if ((typep = lookup_utype (die_ref)) == NULL)
+ {
+ typep = alloc_utype (die_ref, NULL);
+ }
+ break;
+ case AT_mod_u_d_type:
+ typep = decode_mod_u_d_type (scan);
+ break;
+ default:
+ complain (&bad_array_element_type, DIE_ID, DIE_NAME, attribute);
+ typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ break;
+ }
}
return (typep);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_subscr_data -- decode array subscript and element type data
+ decode_subscript_data_item -- decode array subscript item
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_subscr_data (char *scan, char *end)
+ static struct type *
+ decode_subscript_data_item (char *scan, char *end)
-DESCRIPTION
+ DESCRIPTION
+
+ The array subscripts and the data type of the elements of an
+ array are described by a list of data items, stored as a block
+ of contiguous bytes. There is a data item describing each array
+ dimension, and a final data item describing the element type.
+ The data items are ordered the same as their appearance in the
+ source (I.E. leftmost dimension first, next to leftmost second,
+ etc).
+
+ The data items describing each array dimension consist of four
+ parts: (1) a format specifier, (2) type type of the subscript
+ index, (3) a description of the low bound of the array dimension,
+ and (4) a description of the high bound of the array dimension.
+
+ The last data item is the description of the type of each of
+ the array elements.
- The array subscripts and the data type of the elements of an
- array are described by a list of data items, stored as a block
- of contiguous bytes. There is a data item describing each array
- dimension, and a final data item describing the element type.
- The data items are ordered the same as their appearance in the
- source (I.E. leftmost dimension first, next to leftmost second,
- etc).
+ We are passed a pointer to the start of the block of bytes
+ containing the remaining data items, and a pointer to the first
+ byte past the data. This function recursively decodes the
+ remaining data items and returns a type.
- We are passed a pointer to the start of the block of bytes
- containing the data items, and a pointer to the first byte past
- the data. This function decodes the data and returns a type.
+ If we somehow fail to decode some data, we complain about it
+ and return a type "array of int".
-BUGS
- FIXME: This code only implements the forms currently used
- by the AT&T and GNU C compilers.
+ BUGS
+ FIXME: This code only implements the forms currently used
+ by the AT&T and GNU C compilers.
- The end pointer is supplied for error checking, maybe we should
- use it for that...
+ The end pointer is supplied for error checking, maybe we should
+ use it for that...
*/
static struct type *
-decode_subscr_data (scan, end)
+decode_subscript_data_item (scan, end)
char *scan;
char *end;
{
- struct type *typep = NULL;
- struct type *nexttype;
+ struct type *typep = NULL; /* Array type we are building */
+ struct type *nexttype; /* Type of each element (may be array) */
+ struct type *indextype; /* Type of this index */
+ struct type *rangetype;
unsigned int format;
unsigned short fundtype;
unsigned long lowbound;
unsigned long highbound;
int nbytes;
-
+
format = target_to_host (scan, SIZEOF_FORMAT_SPECIFIER, GET_UNSIGNED,
current_objfile);
scan += SIZEOF_FORMAT_SPECIFIER;
case FMT_FT_C_C:
fundtype = target_to_host (scan, SIZEOF_FMT_FT, GET_UNSIGNED,
current_objfile);
+ indextype = decode_fund_type (fundtype);
scan += SIZEOF_FMT_FT;
- if (fundtype != FT_integer && fundtype != FT_signed_integer
- && fundtype != FT_unsigned_integer)
+ nbytes = TARGET_FT_LONG_SIZE (current_objfile);
+ lowbound = target_to_host (scan, nbytes, GET_UNSIGNED, current_objfile);
+ scan += nbytes;
+ highbound = target_to_host (scan, nbytes, GET_UNSIGNED, current_objfile);
+ scan += nbytes;
+ nexttype = decode_subscript_data_item (scan, end);
+ if (nexttype == NULL)
{
- SQUAWK (("array subscripts must be integral types, not type 0x%x",
- fundtype));
- }
- else
- {
- nbytes = TARGET_FT_LONG_SIZE (current_objfile);
- lowbound = target_to_host (scan, nbytes, GET_UNSIGNED,
- current_objfile);
- scan += nbytes;
- highbound = target_to_host (scan, nbytes, GET_UNSIGNED,
- current_objfile);
- scan += nbytes;
- nexttype = decode_subscr_data (scan, end);
- if (nexttype != NULL)
- {
- typep = (struct type *)
- obstack_alloc (¤t_objfile -> type_obstack,
- sizeof (struct type));
- (void) memset (typep, 0, sizeof (struct type));
- TYPE_OBJFILE (typep) = current_objfile;
- TYPE_CODE (typep) = TYPE_CODE_ARRAY;
- TYPE_LENGTH (typep) = TYPE_LENGTH (nexttype);
- TYPE_LENGTH (typep) *= (highbound - lowbound) + 1;
- TYPE_TARGET_TYPE (typep) = nexttype;
- }
+ /* Munged subscript data or other problem, fake it. */
+ complain (&subscript_data_items, DIE_ID, DIE_NAME);
+ nexttype = dwarf_fundamental_type (current_objfile, FT_INTEGER);
}
+ rangetype = create_range_type ((struct type *) NULL, indextype,
+ lowbound, highbound);
+ typep = create_array_type ((struct type *) NULL, nexttype, rangetype);
break;
case FMT_FT_C_X:
case FMT_FT_X_C:
case FMT_UT_C_X:
case FMT_UT_X_C:
case FMT_UT_X_X:
- SQUAWK (("array subscript format 0x%x not handled yet", format));
+ complain (&unhandled_array_subscript_format, DIE_ID, DIE_NAME, format);
+ nexttype = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ rangetype = create_range_type ((struct type *) NULL, nexttype, 0, 0);
+ typep = create_array_type ((struct type *) NULL, nexttype, rangetype);
break;
default:
- SQUAWK (("unknown array subscript format %x", format));
+ complain (&unknown_array_subscript_format, DIE_ID, DIE_NAME, format);
+ nexttype = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ rangetype = create_range_type ((struct type *) NULL, nexttype, 0, 0);
+ typep = create_array_type ((struct type *) NULL, nexttype, rangetype);
break;
}
return (typep);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- dwarf_read_array_type -- read TAG_array_type DIE
+ dwarf_read_array_type -- read TAG_array_type DIE
-SYNOPSIS
+ SYNOPSIS
- static void dwarf_read_array_type (struct dieinfo *dip)
+ static void dwarf_read_array_type (struct dieinfo *dip)
-DESCRIPTION
+ DESCRIPTION
- Extract all information from a TAG_array_type DIE and add to
- the user defined type vector.
+ Extract all information from a TAG_array_type DIE and add to
+ the user defined type vector.
*/
static void
char *subend;
unsigned short blocksz;
int nbytes;
-
- if (dip -> at_ordering != ORD_row_major)
+
+ if (dip->at_ordering != ORD_row_major)
{
/* FIXME: Can gdb even handle column major arrays? */
- SQUAWK (("array not row major; not handled correctly"));
+ complain (¬_row_major, DIE_ID, DIE_NAME);
}
- if ((sub = dip -> at_subscr_data) != NULL)
+ if ((sub = dip->at_subscr_data) != NULL)
{
nbytes = attribute_size (AT_subscr_data);
blocksz = target_to_host (sub, nbytes, GET_UNSIGNED, current_objfile);
subend = sub + nbytes + blocksz;
sub += nbytes;
- type = decode_subscr_data (sub, subend);
- if (type == NULL)
+ type = decode_subscript_data_item (sub, subend);
+ if ((utype = lookup_utype (dip->die_ref)) == NULL)
{
- if ((utype = lookup_utype (dip -> die_ref)) == NULL)
- {
- utype = alloc_utype (dip -> die_ref, NULL);
- }
- TYPE_CODE (utype) = TYPE_CODE_ARRAY;
- TYPE_TARGET_TYPE (utype) =
- lookup_fundamental_type (current_objfile, FT_INTEGER);
- TYPE_LENGTH (utype) = 1 * TYPE_LENGTH (TYPE_TARGET_TYPE (utype));
+ /* Install user defined type that has not been referenced yet. */
+ alloc_utype (dip->die_ref, type);
+ }
+ else if (TYPE_CODE (utype) == TYPE_CODE_UNDEF)
+ {
+ /* Ick! A forward ref has already generated a blank type in our
+ slot, and this type probably already has things pointing to it
+ (which is what caused it to be created in the first place).
+ If it's just a place holder we can plop our fully defined type
+ on top of it. We can't recover the space allocated for our
+ new type since it might be on an obstack, but we could reuse
+ it if we kept a list of them, but it might not be worth it
+ (FIXME). */
+ *utype = *type;
}
else
{
- if ((utype = lookup_utype (dip -> die_ref)) == NULL)
- {
- (void) alloc_utype (dip -> die_ref, type);
- }
- else
- {
- TYPE_CODE (utype) = TYPE_CODE_ARRAY;
- TYPE_LENGTH (utype) = TYPE_LENGTH (type);
- TYPE_TARGET_TYPE (utype) = TYPE_TARGET_TYPE (type);
- }
+ /* Double ick! Not only is a type already in our slot, but
+ someone has decorated it. Complain and leave it alone. */
+ complain (&dup_user_type_definition, DIE_ID, DIE_NAME);
}
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_tag_pointer_type -- read TAG_pointer_type DIE
+ read_tag_pointer_type -- read TAG_pointer_type DIE
-SYNOPSIS
+ SYNOPSIS
- static void read_tag_pointer_type (struct dieinfo *dip)
+ static void read_tag_pointer_type (struct dieinfo *dip)
-DESCRIPTION
+ DESCRIPTION
- Extract all information from a TAG_pointer_type DIE and add to
- the user defined type vector.
+ Extract all information from a TAG_pointer_type DIE and add to
+ the user defined type vector.
*/
static void
{
struct type *type;
struct type *utype;
-
+
type = decode_die_type (dip);
- if ((utype = lookup_utype (dip -> die_ref)) == NULL)
+ if ((utype = lookup_utype (dip->die_ref)) == NULL)
{
utype = lookup_pointer_type (type);
- (void) alloc_utype (dip -> die_ref, utype);
+ alloc_utype (dip->die_ref, utype);
}
else
{
TYPE_POINTER_TYPE (type) = utype;
/* We assume the machine has only one representation for pointers! */
- /* FIXME: This confuses host<->target data representations, and is a
- poor assumption besides. */
-
- TYPE_LENGTH (utype) = sizeof (char *);
+ /* FIXME: Possably a poor assumption */
+ TYPE_LENGTH (utype) = TARGET_PTR_BIT / TARGET_CHAR_BIT;
TYPE_CODE (utype) = TYPE_CODE_PTR;
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_subroutine_type -- process TAG_subroutine_type dies
+ read_tag_string_type -- read TAG_string_type DIE
-SYNOPSIS
+ SYNOPSIS
- static void read_subroutine_type (struct dieinfo *dip, char thisdie,
- char *enddie)
+ static void read_tag_string_type (struct dieinfo *dip)
-DESCRIPTION
+ DESCRIPTION
- Handle DIES due to C code like:
+ Extract all information from a TAG_string_type DIE and add to
+ the user defined type vector. It isn't really a user defined
+ type, but it behaves like one, with other DIE's using an
+ AT_user_def_type attribute to reference it.
+ */
- struct foo {
- int (*funcp)(int a, long l); (Generates TAG_subroutine_type DIE)
- int b;
- };
+static void
+read_tag_string_type (dip)
+ struct dieinfo *dip;
+{
+ struct type *utype;
+ struct type *indextype;
+ struct type *rangetype;
+ unsigned long lowbound = 0;
+ unsigned long highbound;
-NOTES
+ if (dip->has_at_byte_size)
+ {
+ /* A fixed bounds string */
+ highbound = dip->at_byte_size - 1;
+ }
+ else
+ {
+ /* A varying length string. Stub for now. (FIXME) */
+ highbound = 1;
+ }
+ indextype = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ rangetype = create_range_type ((struct type *) NULL, indextype, lowbound,
+ highbound);
+
+ utype = lookup_utype (dip->die_ref);
+ if (utype == NULL)
+ {
+ /* No type defined, go ahead and create a blank one to use. */
+ utype = alloc_utype (dip->die_ref, (struct type *) NULL);
+ }
+ else
+ {
+ /* Already a type in our slot due to a forward reference. Make sure it
+ is a blank one. If not, complain and leave it alone. */
+ if (TYPE_CODE (utype) != TYPE_CODE_UNDEF)
+ {
+ complain (&dup_user_type_definition, DIE_ID, DIE_NAME);
+ return;
+ }
+ }
+
+ /* Create the string type using the blank type we either found or created. */
+ utype = create_string_type (utype, rangetype);
+}
+
+/*
+
+ LOCAL FUNCTION
+
+ read_subroutine_type -- process TAG_subroutine_type dies
+
+ SYNOPSIS
+
+ static void read_subroutine_type (struct dieinfo *dip, char thisdie,
+ char *enddie)
+
+ DESCRIPTION
+
+ Handle DIES due to C code like:
+
+ struct foo {
+ int (*funcp)(int a, long l); (Generates TAG_subroutine_type DIE)
+ int b;
+ };
+
+ NOTES
- The parameter DIES are currently ignored. See if gdb has a way to
- include this info in it's type system, and decode them if so. Is
- this what the type structure's "arg_types" field is for? (FIXME)
+ The parameter DIES are currently ignored. See if gdb has a way to
+ include this info in it's type system, and decode them if so. Is
+ this what the type structure's "arg_types" field is for? (FIXME)
*/
static void
{
struct type *type; /* Type that this function returns */
struct type *ftype; /* Function that returns above type */
-
+
/* Decode the type that this subroutine returns */
type = decode_die_type (dip);
/* Check to see if we already have a partially constructed user
defined type for this DIE, from a forward reference. */
- if ((ftype = lookup_utype (dip -> die_ref)) == NULL)
+ if ((ftype = lookup_utype (dip->die_ref)) == NULL)
{
/* This is the first reference to one of these types. Make
- a new one and place it in the user defined types. */
+ a new one and place it in the user defined types. */
ftype = lookup_function_type (type);
- (void) alloc_utype (dip -> die_ref, ftype);
+ alloc_utype (dip->die_ref, ftype);
}
- else
+ else if (TYPE_CODE (ftype) == TYPE_CODE_UNDEF)
{
/* We have an existing partially constructed type, so bash it
- into the correct type. */
+ into the correct type. */
TYPE_TARGET_TYPE (ftype) = type;
- TYPE_FUNCTION_TYPE (type) = ftype;
TYPE_LENGTH (ftype) = 1;
TYPE_CODE (ftype) = TYPE_CODE_FUNC;
}
+ else
+ {
+ complain (&dup_user_type_definition, DIE_ID, DIE_NAME);
+ }
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_enumeration -- process dies which define an enumeration
+ read_enumeration -- process dies which define an enumeration
-SYNOPSIS
+ SYNOPSIS
- static void read_enumeration (struct dieinfo *dip, char *thisdie,
- char *enddie, struct objfile *objfile)
+ static void read_enumeration (struct dieinfo *dip, char *thisdie,
+ char *enddie, struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to a die which begins an enumeration, process all
- the dies that define the members of the enumeration.
+ Given a pointer to a die which begins an enumeration, process all
+ the dies that define the members of the enumeration.
-NOTES
+ NOTES
- Note that we need to call enum_type regardless of whether or not we
- have a symbol, since we might have an enum without a tag name (thus
- no symbol for the tagname).
+ Note that we need to call enum_type regardless of whether or not we
+ have a symbol, since we might have an enum without a tag name (thus
+ no symbol for the tagname).
*/
static void
{
struct type *type;
struct symbol *sym;
-
+
type = enum_type (dip, objfile);
- if ((sym = new_symbol (dip, objfile)) != NULL)
+ sym = new_symbol (dip, objfile);
+ if (sym != NULL)
{
SYMBOL_TYPE (sym) = type;
+ if (cu_language == language_cplus)
+ {
+ synthesize_typedef (dip, objfile, type);
+ }
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- enum_type -- decode and return a type for an enumeration
+ enum_type -- decode and return a type for an enumeration
-SYNOPSIS
+ SYNOPSIS
- static type *enum_type (struct dieinfo *dip, struct objfile *objfile)
+ static type *enum_type (struct dieinfo *dip, struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to a die information structure for the die which
- starts an enumeration, process all the dies that define the members
- of the enumeration and return a type pointer for the enumeration.
+ Given a pointer to a die information structure for the die which
+ starts an enumeration, process all the dies that define the members
+ of the enumeration and return a type pointer for the enumeration.
- At the same time, for each member of the enumeration, create a
- symbol for it with namespace VAR_NAMESPACE and class LOC_CONST,
- and give it the type of the enumeration itself.
+ At the same time, for each member of the enumeration, create a
+ symbol for it with namespace VAR_NAMESPACE and class LOC_CONST,
+ and give it the type of the enumeration itself.
-NOTES
+ NOTES
- Note that the DWARF specification explicitly mandates that enum
- constants occur in reverse order from the source program order,
- for "consistency" and because this ordering is easier for many
- compilers to generate. (Draft 6, sec 3.8.5, Enumeration type
- Entries). Because gdb wants to see the enum members in program
- source order, we have to ensure that the order gets reversed while
- we are processing them.
+ Note that the DWARF specification explicitly mandates that enum
+ constants occur in reverse order from the source program order,
+ for "consistency" and because this ordering is easier for many
+ compilers to generate. (Draft 6, sec 3.8.5, Enumeration type
+ Entries). Because gdb wants to see the enum members in program
+ source order, we have to ensure that the order gets reversed while
+ we are processing them.
*/
static struct type *
struct objfile *objfile;
{
struct type *type;
- struct nextfield {
- struct nextfield *next;
- struct field field;
- };
+ struct nextfield
+ {
+ struct nextfield *next;
+ struct field field;
+ };
struct nextfield *list = NULL;
struct nextfield *new;
int nfields = 0;
unsigned short blocksz;
struct symbol *sym;
int nbytes;
-
- if ((type = lookup_utype (dip -> die_ref)) == NULL)
+ int unsigned_enum = 1;
+
+ if ((type = lookup_utype (dip->die_ref)) == NULL)
{
/* No forward references created an empty type, so install one now */
- type = alloc_utype (dip -> die_ref, NULL);
+ type = alloc_utype (dip->die_ref, NULL);
}
TYPE_CODE (type) = TYPE_CODE_ENUM;
/* Some compilers try to be helpful by inventing "fake" names for
anonymous enums, structures, and unions, like "~0fake" or ".0fake".
Thanks, but no thanks... */
- if (dip -> at_name != NULL
- && *dip -> at_name != '~'
- && *dip -> at_name != '.')
+ if (dip->at_name != NULL
+ && *dip->at_name != '~'
+ && *dip->at_name != '.')
{
- TYPE_NAME (type) = obconcat (&objfile -> type_obstack, "enum",
- " ", dip -> at_name);
+ TYPE_TAG_NAME (type) = obconcat (&objfile->type_obstack,
+ "", "", dip->at_name);
}
- if (dip -> at_byte_size != 0)
+ if (dip->at_byte_size != 0)
{
- TYPE_LENGTH (type) = dip -> at_byte_size;
+ TYPE_LENGTH (type) = dip->at_byte_size;
}
- if ((scan = dip -> at_element_list) != NULL)
+ if ((scan = dip->at_element_list) != NULL)
{
- if (dip -> short_element_list)
+ if (dip->short_element_list)
{
nbytes = attribute_size (AT_short_element_list);
}
while (scan < listend)
{
new = (struct nextfield *) alloca (sizeof (struct nextfield));
- new -> next = list;
+ new->next = list;
list = new;
- list -> field.type = NULL;
- list -> field.bitsize = 0;
- list -> field.bitpos =
+ FIELD_TYPE (list->field) = NULL;
+ FIELD_BITSIZE (list->field) = 0;
+ FIELD_BITPOS (list->field) =
target_to_host (scan, TARGET_FT_LONG_SIZE (objfile), GET_SIGNED,
objfile);
scan += TARGET_FT_LONG_SIZE (objfile);
- list -> field.name = savestring (scan, strlen (scan));
+ list->field.name = obsavestring (scan, strlen (scan),
+ &objfile->type_obstack);
scan += strlen (scan) + 1;
nfields++;
/* Handcraft a new symbol for this enum member. */
sym = (struct symbol *) obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
- (void) memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = create_name (list -> field.name,
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = create_name (list->field.name,
&objfile->symbol_obstack);
+ SYMBOL_INIT_LANGUAGE_SPECIFIC (sym, cu_language);
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_CLASS (sym) = LOC_CONST;
SYMBOL_TYPE (sym) = type;
- SYMBOL_VALUE (sym) = list -> field.bitpos;
+ SYMBOL_VALUE (sym) = FIELD_BITPOS (list->field);
+ if (SYMBOL_VALUE (sym) < 0)
+ unsigned_enum = 0;
add_symbol_to_list (sym, list_in_scope);
}
/* Now create the vector of fields, and record how big it is. This is
- where we reverse the order, by pulling the members of the list in
- reverse order from how they were inserted. If we have no fields
- (this is apparently possible in C++) then skip building a field
- vector. */
+ where we reverse the order, by pulling the members off the list in
+ reverse order from how they were inserted. If we have no fields
+ (this is apparently possible in C++) then skip building a field
+ vector. */
if (nfields > 0)
{
+ if (unsigned_enum)
+ TYPE_FLAGS (type) |= TYPE_FLAG_UNSIGNED;
TYPE_NFIELDS (type) = nfields;
TYPE_FIELDS (type) = (struct field *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct field) * nfields);
/* Copy the saved-up fields into the field vector. */
- for (n = 0; (n < nfields) && (list != NULL); list = list -> next)
+ for (n = 0; (n < nfields) && (list != NULL); list = list->next)
{
- TYPE_FIELD (type, n++) = list -> field;
- }
+ TYPE_FIELD (type, n++) = list->field;
+ }
}
}
return (type);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_func_scope -- process all dies within a function scope
+ read_func_scope -- process all dies within a function scope
-DESCRIPTION
+ DESCRIPTION
+
+ Process all dies within a given function scope. We are passed
+ a die information structure pointer DIP for the die which
+ starts the function scope, and pointers into the raw die data
+ that define the dies within the function scope.
- Process all dies within a given function scope. We are passed
- a die information structure pointer DIP for the die which
- starts the function scope, and pointers into the raw die data
- that define the dies within the function scope.
-
- For now, we ignore lexical block scopes within the function.
- The problem is that AT&T cc does not define a DWARF lexical
- block scope for the function itself, while gcc defines a
- lexical block scope for the function. We need to think about
- how to handle this difference, or if it is even a problem.
- (FIXME)
+ For now, we ignore lexical block scopes within the function.
+ The problem is that AT&T cc does not define a DWARF lexical
+ block scope for the function itself, while gcc defines a
+ lexical block scope for the function. We need to think about
+ how to handle this difference, or if it is even a problem.
+ (FIXME)
*/
static void
struct objfile *objfile;
{
register struct context_stack *new;
-
- if (objfile -> ei.entry_point >= dip -> at_low_pc &&
- objfile -> ei.entry_point < dip -> at_high_pc)
+
+ /* AT_name is absent if the function is described with an
+ AT_abstract_origin tag.
+ Ignore the function description for now to avoid GDB core dumps.
+ FIXME: Add code to handle AT_abstract_origin tags properly. */
+ if (dip->at_name == NULL)
{
- objfile -> ei.entry_func_lowpc = dip -> at_low_pc;
- objfile -> ei.entry_func_highpc = dip -> at_high_pc;
+ complain (&missing_at_name, DIE_ID);
+ return;
}
- if (STREQ (dip -> at_name, "main")) /* FIXME: hardwired name */
+
+ if (objfile->ei.entry_point >= dip->at_low_pc &&
+ objfile->ei.entry_point < dip->at_high_pc)
{
- objfile -> ei.main_func_lowpc = dip -> at_low_pc;
- objfile -> ei.main_func_highpc = dip -> at_high_pc;
+ objfile->ei.entry_func_lowpc = dip->at_low_pc;
+ objfile->ei.entry_func_highpc = dip->at_high_pc;
}
- new = push_context (0, dip -> at_low_pc);
- new -> name = new_symbol (dip, objfile);
+ new = push_context (0, dip->at_low_pc);
+ new->name = new_symbol (dip, objfile);
list_in_scope = &local_symbols;
- process_dies (thisdie + dip -> die_length, enddie, objfile);
+ process_dies (thisdie + dip->die_length, enddie, objfile);
new = pop_context ();
/* Make a block for the local symbols within. */
- finish_block (new -> name, &local_symbols, new -> old_blocks,
- new -> start_addr, dip -> at_high_pc, objfile);
+ finish_block (new->name, &local_symbols, new->old_blocks,
+ new->start_addr, dip->at_high_pc, objfile);
list_in_scope = &file_symbols;
}
+
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- read_file_scope -- process all dies within a file scope
+ handle_producer -- process the AT_producer attribute
+
+ DESCRIPTION
+
+ Perform any operations that depend on finding a particular
+ AT_producer attribute.
+
+ */
+
+static void
+handle_producer (producer)
+ char *producer;
+{
+
+ /* If this compilation unit was compiled with g++ or gcc, then set the
+ processing_gcc_compilation flag. */
+
+ if (STREQN (producer, GCC_PRODUCER, strlen (GCC_PRODUCER)))
+ {
+ char version = producer[strlen (GCC_PRODUCER)];
+ processing_gcc_compilation = (version == '2' ? 2 : 1);
+ }
+ else
+ {
+ processing_gcc_compilation =
+ STREQN (producer, GPLUS_PRODUCER, strlen (GPLUS_PRODUCER))
+ || STREQN (producer, CHILL_PRODUCER, strlen (CHILL_PRODUCER));
+ }
+
+ /* Select a demangling style if we can identify the producer and if
+ the current style is auto. We leave the current style alone if it
+ is not auto. We also leave the demangling style alone if we find a
+ gcc (cc1) producer, as opposed to a g++ (cc1plus) producer. */
+
+ if (AUTO_DEMANGLING)
+ {
+ if (STREQN (producer, GPLUS_PRODUCER, strlen (GPLUS_PRODUCER)))
+ {
+ set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
+ }
+ else if (STREQN (producer, LCC_PRODUCER, strlen (LCC_PRODUCER)))
+ {
+ set_demangling_style (LUCID_DEMANGLING_STYLE_STRING);
+ }
+ }
+}
-DESCRIPTION
- Process all dies within a given file scope. We are passed a
- pointer to the die information structure for the die which
- starts the file scope, and pointers into the raw die data which
- mark the range of dies within the file scope.
-
- When the partial symbol table is built, the file offset for the line
- number table for each compilation unit is saved in the partial symbol
- table entry for that compilation unit. As the symbols for each
- compilation unit are read, the line number table is read into memory
- and the variable lnbase is set to point to it. Thus all we have to
- do is use lnbase to access the line number table for the current
- compilation unit.
+/*
+
+ LOCAL FUNCTION
+
+ read_file_scope -- process all dies within a file scope
+
+ DESCRIPTION
+
+ Process all dies within a given file scope. We are passed a
+ pointer to the die information structure for the die which
+ starts the file scope, and pointers into the raw die data which
+ mark the range of dies within the file scope.
+
+ When the partial symbol table is built, the file offset for the line
+ number table for each compilation unit is saved in the partial symbol
+ table entry for that compilation unit. As the symbols for each
+ compilation unit are read, the line number table is read into memory
+ and the variable lnbase is set to point to it. Thus all we have to
+ do is use lnbase to access the line number table for the current
+ compilation unit.
*/
static void
{
struct cleanup *back_to;
struct symtab *symtab;
-
- if (objfile -> ei.entry_point >= dip -> at_low_pc &&
- objfile -> ei.entry_point < dip -> at_high_pc)
+
+ if (objfile->ei.entry_point >= dip->at_low_pc &&
+ objfile->ei.entry_point < dip->at_high_pc)
{
- objfile -> ei.entry_file_lowpc = dip -> at_low_pc;
- objfile -> ei.entry_file_highpc = dip -> at_high_pc;
+ objfile->ei.entry_file_lowpc = dip->at_low_pc;
+ objfile->ei.entry_file_highpc = dip->at_high_pc;
}
- if (dip -> at_producer != NULL)
+ set_cu_language (dip);
+ if (dip->at_producer != NULL)
{
- processing_gcc_compilation =
- STREQN (dip -> at_producer, GCC_PRODUCER, strlen (GCC_PRODUCER));
+ handle_producer (dip->at_producer);
}
numutypes = (enddie - thisdie) / 4;
utypes = (struct type **) xmalloc (numutypes * sizeof (struct type *));
- back_to = make_cleanup (free, utypes);
- (void) memset (utypes, 0, numutypes * sizeof (struct type *));
- start_symtab (dip -> at_name, NULL, dip -> at_low_pc);
+ back_to = make_cleanup (free_utypes, NULL);
+ 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);
+ record_debugformat ("DWARF 1");
decode_line_numbers (lnbase);
- process_dies (thisdie + dip -> die_length, enddie, objfile);
- symtab = end_symtab (dip -> at_high_pc, 0, 0, objfile);
- /* FIXME: The following may need to be expanded for other languages */
- switch (dip -> at_language)
- {
- case LANG_C89:
- case LANG_C:
- symtab -> language = language_c;
- break;
- case LANG_C_PLUS_PLUS:
- symtab -> language = language_cplus;
- break;
- default:
- ;
+ process_dies (thisdie + dip->die_length, enddie, objfile);
+
+ symtab = end_symtab (dip->at_high_pc, objfile, 0);
+ if (symtab != NULL)
+ {
+ symtab->language = cu_language;
}
do_cleanups (back_to);
- utypes = NULL;
- numutypes = 0;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- process_dies -- process a range of DWARF Information Entries
+ process_dies -- process a range of DWARF Information Entries
-SYNOPSIS
+ SYNOPSIS
- static void process_dies (char *thisdie, char *enddie,
- struct objfile *objfile)
+ static void process_dies (char *thisdie, char *enddie,
+ struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Process all DIE's in a specified range. May be (and almost
- certainly will be) called recursively.
+ Process all DIE's in a specified range. May be (and almost
+ certainly will be) called recursively.
*/
static void
{
char *nextdie;
struct dieinfo di;
-
+
while (thisdie < enddie)
{
basicdieinfo (&di, thisdie, objfile);
{
nextdie = thisdie + di.die_length;
}
+#ifdef SMASH_TEXT_ADDRESS
+ /* I think that these are always text, not data, addresses. */
+ SMASH_TEXT_ADDRESS (di.at_low_pc);
+ SMASH_TEXT_ADDRESS (di.at_high_pc);
+#endif
switch (di.die_tag)
{
case TAG_compile_unit:
- read_file_scope (&di, thisdie, nextdie, objfile);
+ /* Skip Tag_compile_unit if we are already inside a compilation
+ unit, we are unable to handle nested compilation units
+ properly (FIXME). */
+ if (current_subfile == NULL)
+ read_file_scope (&di, thisdie, nextdie, objfile);
+ else
+ nextdie = thisdie + di.die_length;
break;
case TAG_global_subroutine:
case TAG_subroutine:
case TAG_lexical_block:
read_lexical_block_scope (&di, thisdie, nextdie, objfile);
break;
+ case TAG_class_type:
case TAG_structure_type:
case TAG_union_type:
read_structure_scope (&di, thisdie, nextdie, objfile);
case TAG_pointer_type:
read_tag_pointer_type (&di);
break;
+ case TAG_string_type:
+ read_tag_string_type (&di);
+ break;
default:
- (void) new_symbol (&di, objfile);
+ new_symbol (&di, objfile);
break;
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_line_numbers -- decode a line number table fragment
+ decode_line_numbers -- decode a line number table fragment
-SYNOPSIS
+ SYNOPSIS
- static void decode_line_numbers (char *tblscan, char *tblend,
- long length, long base, long line, long pc)
+ static void decode_line_numbers (char *tblscan, char *tblend,
+ long length, long base, long line, long pc)
-DESCRIPTION
+ DESCRIPTION
- Translate the DWARF line number information to gdb form.
+ Translate the DWARF line number information to gdb form.
- The ".line" section contains one or more line number tables, one for
- each ".line" section from the objects that were linked.
+ The ".line" section contains one or more line number tables, one for
+ each ".line" section from the objects that were linked.
- The AT_stmt_list attribute for each TAG_source_file entry in the
- ".debug" section contains the offset into the ".line" section for the
- start of the table for that file.
+ The AT_stmt_list attribute for each TAG_source_file entry in the
+ ".debug" section contains the offset into the ".line" section for the
+ start of the table for that file.
- The table itself has the following structure:
+ The table itself has the following structure:
-
<table length><base address><source statement entry>
- 4 bytes 4 bytes 10 bytes
+ <table length><base address><source statement entry>
+ 4 bytes 4 bytes 10 bytes
- The table length is the total size of the table, including the 4 bytes
- for the length information.
+ The table length is the total size of the table, including the 4 bytes
+ for the length information.
- The base address is the address of the first instruction generated
- for the source file.
+ The base address is the address of the first instruction generated
+ for the source file.
- Each source statement entry has the following structure:
+ Each source statement entry has the following structure:
-
<line number><statement position><address delta>
- 4 bytes 2 bytes 4 bytes
+ <line number><statement position><address delta>
+ 4 bytes 2 bytes 4 bytes
- The line number is relative to the start of the file, starting with
- line 1.
+ The line number is relative to the start of the file, starting with
+ line 1.
- The statement position either -1 (0xFFFF) or the number of characters
- from the beginning of the line to the beginning of the statement.
+ The statement position either -1 (0xFFFF) or the number of characters
+ from the beginning of the line to the beginning of the statement.
- The address delta is the difference between the base address and
- the address of the first instruction for the statement.
+ The address delta is the difference between the base address and
+ the address of the first instruction for the statement.
- Note that we must copy the bytes from the packed table to our local
- variables before attempting to use them, to avoid alignment problems
- on some machines, particularly RISC processors.
+ Note that we must copy the bytes from the packed table to our local
+ variables before attempting to use them, to avoid alignment problems
+ on some machines, particularly RISC processors.
-BUGS
+ BUGS
- Does gdb expect the line numbers to be sorted? They are now by
- chance/luck, but are not required to be. (FIXME)
+ Does gdb expect the line numbers to be sorted? They are now by
+ chance/luck, but are not required to be. (FIXME)
- The line with number 0 is unused, gdb apparently can discover the
- span of the last line some other way. How? (FIXME)
+ The line with number 0 is unused, gdb apparently can discover the
+ span of the last line some other way. How? (FIXME)
*/
static void
unsigned long base;
unsigned long line;
unsigned long pc;
-
+
if (linetable != NULL)
{
tblscan = tblend = linetable;
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- locval -- compute the value of a location attribute
+ locval -- compute the value of a location attribute
-SYNOPSIS
+ SYNOPSIS
- static int locval (char *loc)
+ static int locval (struct dieinfo *dip)
-DESCRIPTION
+ DESCRIPTION
- Given pointer to a string of bytes that define a location, compute
- the location and return the value.
+ Given pointer to a string of bytes that define a location, compute
+ the location and return the value.
+ A location description containing no atoms indicates that the
+ object is optimized out. The optimized_out flag is set for those,
+ the return value is meaningless.
- When computing values involving the current value of the frame pointer,
- the value zero is used, which results in a value relative to the frame
- pointer, rather than the absolute value. This is what GDB wants
- anyway.
-
- When the result is a register number, the global isreg flag is set,
- otherwise it is cleared. This is a kludge until we figure out a better
- way to handle the problem. Gdb's design does not mesh well with the
- DWARF notion of a location computing interpreter, which is a shame
- because the flexibility goes unused.
+ When computing values involving the current value of the frame pointer,
+ the value zero is used, which results in a value relative to the frame
+ pointer, rather than the absolute value. This is what GDB wants
+ anyway.
-NOTES
+ When the result is a register number, the isreg flag is set, otherwise
+ it is cleared. This is a kludge until we figure out a better
+ way to handle the problem. Gdb's design does not mesh well with the
+ DWARF notion of a location computing interpreter, which is a shame
+ because the flexibility goes unused.
- Note that stack[0] is unused except as a default error return.
- Note that stack overflow is not yet handled.
+ NOTES
+
+ Note that stack[0] is unused except as a default error return.
+ Note that stack overflow is not yet handled.
*/
static int
-locval (loc)
- char *loc;
+locval (dip)
+ struct dieinfo *dip;
{
unsigned short nbytes;
unsigned short locsize;
auto long stack[64];
int stacki;
+ char *loc;
char *end;
- long regno;
int loc_atom_code;
int loc_value_size;
-
+
+ loc = dip->at_location;
nbytes = attribute_size (AT_location);
locsize = target_to_host (loc, nbytes, GET_UNSIGNED, current_objfile);
loc += nbytes;
end = loc + locsize;
stacki = 0;
stack[stacki] = 0;
- isreg = 0;
- offreg = 0;
+ dip->isreg = 0;
+ dip->offreg = 0;
+ dip->optimized_out = 1;
loc_value_size = TARGET_FT_LONG_SIZE (current_objfile);
while (loc < end)
{
+ dip->optimized_out = 0;
loc_atom_code = target_to_host (loc, SIZEOF_LOC_ATOM_CODE, GET_UNSIGNED,
current_objfile);
loc += SIZEOF_LOC_ATOM_CODE;
switch (loc_atom_code)
{
- case 0:
- /* error */
- loc = end;
- break;
- case OP_REG:
- /* push register (number) */
- stack[++stacki] = target_to_host (loc, loc_value_size,
- GET_UNSIGNED, current_objfile);
- loc += loc_value_size;
- isreg = 1;
- break;
- case OP_BASEREG:
- /* push value of register (number) */
- /* Actually, we compute the value as if register has 0 */
- offreg = 1;
- regno = target_to_host (loc, loc_value_size, GET_UNSIGNED,
- current_objfile);
- loc += loc_value_size;
- if (regno == R_FP)
- {
- stack[++stacki] = 0;
- }
- else
- {
- stack[++stacki] = 0;
- SQUAWK (("BASEREG %d not handled!", regno));
- }
- break;
- case OP_ADDR:
- /* push address (relocated address) */
- stack[++stacki] = target_to_host (loc, loc_value_size,
- GET_UNSIGNED, current_objfile);
- loc += loc_value_size;
- break;
- case OP_CONST:
- /* push constant (number) FIXME: signed or unsigned! */
- stack[++stacki] = target_to_host (loc, loc_value_size,
- GET_SIGNED, current_objfile);
- loc += loc_value_size;
- break;
- case OP_DEREF2:
- /* pop, deref and push 2 bytes (as a long) */
- SQUAWK (("OP_DEREF2 address 0x%x not handled", stack[stacki]));
- break;
- case OP_DEREF4: /* pop, deref and push 4 bytes (as a long) */
- SQUAWK (("OP_DEREF4 address 0x%x not handled", stack[stacki]));
- break;
- case OP_ADD: /* pop top 2 items, add, push result */
- stack[stacki - 1] += stack[stacki];
- stacki--;
- break;
+ case 0:
+ /* error */
+ loc = end;
+ break;
+ case OP_REG:
+ /* push register (number) */
+ stack[++stacki]
+ = DWARF_REG_TO_REGNUM (target_to_host (loc, loc_value_size,
+ GET_UNSIGNED,
+ current_objfile));
+ loc += loc_value_size;
+ dip->isreg = 1;
+ break;
+ case OP_BASEREG:
+ /* push value of register (number) */
+ /* Actually, we compute the value as if register has 0, so the
+ value ends up being the offset from that register. */
+ dip->offreg = 1;
+ dip->basereg = target_to_host (loc, loc_value_size, GET_UNSIGNED,
+ current_objfile);
+ loc += loc_value_size;
+ stack[++stacki] = 0;
+ break;
+ case OP_ADDR:
+ /* push address (relocated address) */
+ stack[++stacki] = target_to_host (loc, loc_value_size,
+ GET_UNSIGNED, current_objfile);
+ loc += loc_value_size;
+ break;
+ case OP_CONST:
+ /* push constant (number) FIXME: signed or unsigned! */
+ stack[++stacki] = target_to_host (loc, loc_value_size,
+ GET_SIGNED, current_objfile);
+ loc += loc_value_size;
+ break;
+ case OP_DEREF2:
+ /* pop, deref and push 2 bytes (as a long) */
+ complain (&op_deref2, DIE_ID, DIE_NAME, stack[stacki]);
+ break;
+ case OP_DEREF4: /* pop, deref and push 4 bytes (as a long) */
+ complain (&op_deref4, DIE_ID, DIE_NAME, stack[stacki]);
+ break;
+ case OP_ADD: /* pop top 2 items, add, push result */
+ stack[stacki - 1] += stack[stacki];
+ stacki--;
+ break;
}
}
return (stack[stacki]);
/*
-LOCAL FUNCTION
-
- read_ofile_symtab -- build a full symtab entry from chunk of DIE's
+ LOCAL FUNCTION
-SYNOPSIS
+ read_ofile_symtab -- build a full symtab entry from chunk of DIE's
- static struct symtab *read_ofile_symtab (struct partial_symtab *pst)
+ SYNOPSIS
-DESCRIPTION
+ static void read_ofile_symtab (struct partial_symtab *pst)
- When expanding a partial symbol table entry to a full symbol table
- entry, this is the function that gets called to read in the symbols
- for the compilation unit.
+ DESCRIPTION
- Returns a pointer to the newly constructed symtab (which is now
- the new first one on the objfile's symtab list).
+ When expanding a partial symbol table entry to a full symbol table
+ entry, this is the function that gets called to read in the symbols
+ for the compilation unit. A pointer to the newly constructed symtab,
+ which is now the new first one on the objfile's symtab list, is
+ stashed in the partial symbol table entry.
*/
-static struct symtab *
+static void
read_ofile_symtab (pst)
struct partial_symtab *pst;
{
struct cleanup *back_to;
unsigned long lnsize;
- int foffset;
+ file_ptr foffset;
bfd *abfd;
char lnsizedata[SIZEOF_LINETBL_LENGTH];
- abfd = pst -> objfile -> obfd;
- current_objfile = pst -> objfile;
+ abfd = pst->objfile->obfd;
+ current_objfile = pst->objfile;
/* Allocate a buffer for the entire chunk of DIE's for this compilation
unit, seek to the location in the file, and read in all the DIE's. */
diecount = 0;
- dbbase = xmalloc (DBLENGTH(pst));
- dbroff = DBROFF(pst);
- foffset = DBFOFF(pst) + dbroff;
- baseaddr = pst -> addr;
- if (bfd_seek (abfd, foffset, 0) ||
- (bfd_read (dbbase, DBLENGTH(pst), 1, abfd) != DBLENGTH(pst)))
+ dbsize = DBLENGTH (pst);
+ dbbase = xmalloc (dbsize);
+ dbroff = DBROFF (pst);
+ foffset = DBFOFF (pst) + dbroff;
+ base_section_offsets = pst->section_offsets;
+ baseaddr = ANOFFSET (pst->section_offsets, 0);
+ if (bfd_seek (abfd, foffset, SEEK_SET) ||
+ (bfd_read (dbbase, dbsize, 1, abfd) != dbsize))
{
free (dbbase);
error ("can't read DWARF data");
lnbase = NULL;
if (LNFOFF (pst))
{
- if (bfd_seek (abfd, LNFOFF (pst), 0) ||
+ if (bfd_seek (abfd, LNFOFF (pst), SEEK_SET) ||
(bfd_read ((PTR) lnsizedata, sizeof (lnsizedata), 1, abfd) !=
sizeof (lnsizedata)))
{
error ("can't read DWARF line number table size");
}
lnsize = target_to_host (lnsizedata, SIZEOF_LINETBL_LENGTH,
- GET_UNSIGNED, pst -> objfile);
+ GET_UNSIGNED, pst->objfile);
lnbase = xmalloc (lnsize);
- if (bfd_seek (abfd, LNFOFF (pst), 0) ||
+ if (bfd_seek (abfd, LNFOFF (pst), SEEK_SET) ||
(bfd_read (lnbase, lnsize, 1, abfd) != lnsize))
{
free (lnbase);
make_cleanup (free, lnbase);
}
- process_dies (dbbase, dbbase + DBLENGTH(pst), pst -> objfile);
+ process_dies (dbbase, dbbase + dbsize, pst->objfile);
do_cleanups (back_to);
current_objfile = NULL;
- return (pst -> objfile -> symtabs);
+ pst->symtab = pst->objfile->symtabs;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- psymtab_to_symtab_1 -- do grunt work for building a full symtab entry
+ psymtab_to_symtab_1 -- do grunt work for building a full symtab entry
-SYNOPSIS
+ SYNOPSIS
- static void psymtab_to_symtab_1 (struct partial_symtab *pst)
+ static void psymtab_to_symtab_1 (struct partial_symtab *pst)
-DESCRIPTION
+ DESCRIPTION
- Called once for each partial symbol table entry that needs to be
- expanded into a full symbol table entry.
+ Called once for each partial symbol table entry that needs to be
+ expanded into a full symbol table entry.
-*/
+ */
static void
psymtab_to_symtab_1 (pst)
struct partial_symtab *pst;
{
int i;
-
+ struct cleanup *old_chain;
+
if (pst != NULL)
{
if (pst->readin)
{
warning ("psymtab for %s already read in. Shouldn't happen.",
- pst -> filename);
+ pst->filename);
}
else
{
/* Read in all partial symtabs on which this one is dependent */
- for (i = 0; i < pst -> number_of_dependencies; i++)
+ for (i = 0; i < pst->number_of_dependencies; i++)
{
- if (!pst -> dependencies[i] -> readin)
+ if (!pst->dependencies[i]->readin)
{
/* Inform about additional files that need to be read in. */
if (info_verbose)
{
- fputs_filtered (" ", stdout);
+ fputs_filtered (" ", gdb_stdout);
wrap_here ("");
- fputs_filtered ("and ", stdout);
+ fputs_filtered ("and ", gdb_stdout);
wrap_here ("");
printf_filtered ("%s...",
- pst -> dependencies[i] -> filename);
+ pst->dependencies[i]->filename);
wrap_here ("");
- fflush (stdout); /* Flush output */
+ gdb_flush (gdb_stdout); /* Flush output */
}
- psymtab_to_symtab_1 (pst -> dependencies[i]);
+ psymtab_to_symtab_1 (pst->dependencies[i]);
}
- }
- if (DBLENGTH (pst)) /* Otherwise it's a dummy */
+ }
+ if (DBLENGTH (pst)) /* Otherwise it's a dummy */
{
- pst -> symtab = read_ofile_symtab (pst);
+ buildsym_init ();
+ old_chain = make_cleanup (really_free_pendings, 0);
+ read_ofile_symtab (pst);
if (info_verbose)
{
printf_filtered ("%d DIE's, sorting...", diecount);
wrap_here ("");
- fflush (stdout);
+ gdb_flush (gdb_stdout);
}
- sort_symtab_syms (pst -> symtab);
+ sort_symtab_syms (pst->symtab);
+ do_cleanups (old_chain);
}
- pst -> readin = 1;
+ pst->readin = 1;
}
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- dwarf_psymtab_to_symtab -- build a full symtab entry from partial one
+ dwarf_psymtab_to_symtab -- build a full symtab entry from partial one
-SYNOPSIS
+ SYNOPSIS
- static void dwarf_psymtab_to_symtab (struct partial_symtab *pst)
+ static void dwarf_psymtab_to_symtab (struct partial_symtab *pst)
-DESCRIPTION
+ DESCRIPTION
- This is the DWARF support entry point for building a full symbol
- table entry from a partial symbol table entry. We are passed a
- pointer to the partial symbol table entry that needs to be expanded.
+ This is the DWARF support entry point for building a full symbol
+ table entry from a partial symbol table entry. We are passed a
+ pointer to the partial symbol table entry that needs to be expanded.
-*/
+ */
static void
dwarf_psymtab_to_symtab (pst)
if (pst != NULL)
{
- if (pst -> readin)
+ if (pst->readin)
{
warning ("psymtab for %s already read in. Shouldn't happen.",
- pst -> filename);
+ pst->filename);
}
else
{
- if (DBLENGTH (pst) || pst -> number_of_dependencies)
+ if (DBLENGTH (pst) || pst->number_of_dependencies)
{
/* Print the message now, before starting serious work, to avoid
- disconcerting pauses. */
+ disconcerting pauses. */
if (info_verbose)
{
printf_filtered ("Reading in symbols for %s...",
- pst -> filename);
- fflush (stdout);
+ pst->filename);
+ gdb_flush (gdb_stdout);
}
-
+
psymtab_to_symtab_1 (pst);
-
-#if 0 /* FIXME: Check to see what dbxread is doing here and see if
- we need to do an equivalent or is this something peculiar to
- stabs/a.out format.
- Match with global symbols. This only needs to be done once,
- after all of the symtabs and dependencies have been read in.
- */
- scan_file_globals (pst -> objfile);
+
+#if 0 /* FIXME: Check to see what dbxread is doing here and see if
+ we need to do an equivalent or is this something peculiar to
+ stabs/a.out format.
+ Match with global symbols. This only needs to be done once,
+ after all of the symtabs and dependencies have been read in.
+ */
+ scan_file_globals (pst->objfile);
#endif
-
+
/* Finish up the verbose info message. */
if (info_verbose)
{
printf_filtered ("done.\n");
- fflush (stdout);
+ gdb_flush (gdb_stdout);
}
}
}
/*
-LOCAL FUNCTION
-
- init_psymbol_list -- initialize storage for partial symbols
-
-SYNOPSIS
+ LOCAL FUNCTION
- static void init_psymbol_list (struct objfile *objfile, int total_symbols)
+ add_enum_psymbol -- add enumeration members to partial symbol table
-DESCRIPTION
+ DESCRIPTION
- Initializes storage for all of the partial symbols that will be
- created by dwarf_build_psymtabs and subsidiaries.
+ Given pointer to a DIE that is known to be for an enumeration,
+ extract the symbolic names of the enumeration members and add
+ partial symbols for them.
*/
-static void
-init_psymbol_list (objfile, total_symbols)
- struct objfile *objfile;
- int total_symbols;
-{
- /* Free any previously allocated psymbol lists. */
-
- if (objfile -> global_psymbols.list)
- {
- mfree (objfile -> md, (PTR)objfile -> global_psymbols.list);
- }
- if (objfile -> static_psymbols.list)
- {
- mfree (objfile -> md, (PTR)objfile -> static_psymbols.list);
- }
-
- /* Current best guess is that there are approximately a twentieth
- of the total symbols (in a debugging file) are global or static
- oriented symbols */
-
- objfile -> global_psymbols.size = total_symbols / 10;
- objfile -> static_psymbols.size = total_symbols / 10;
- objfile -> global_psymbols.next =
- objfile -> global_psymbols.list = (struct partial_symbol *)
- xmmalloc (objfile -> md, objfile -> global_psymbols.size
- * sizeof (struct partial_symbol));
- objfile -> static_psymbols.next =
- objfile -> static_psymbols.list = (struct partial_symbol *)
- xmmalloc (objfile -> md, objfile -> static_psymbols.size
- * sizeof (struct partial_symbol));
-}
-
-/*
-
-LOCAL FUNCTION
-
- add_enum_psymbol -- add enumeration members to partial symbol table
-
-DESCRIPTION
-
- Given pointer to a DIE that is known to be for an enumeration,
- extract the symbolic names of the enumeration members and add
- partial symbols for them.
-*/
-
static void
add_enum_psymbol (dip, objfile)
struct dieinfo *dip;
char *listend;
unsigned short blocksz;
int nbytes;
-
- if ((scan = dip -> at_element_list) != NULL)
+
+ if ((scan = dip->at_element_list) != NULL)
{
- if (dip -> short_element_list)
+ if (dip->short_element_list)
{
nbytes = attribute_size (AT_short_element_list);
}
while (scan < listend)
{
scan += TARGET_FT_LONG_SIZE (objfile);
- ADD_PSYMBOL_TO_LIST (scan, strlen (scan), VAR_NAMESPACE, LOC_CONST,
- objfile -> static_psymbols, 0);
+ add_psymbol_to_list (scan, strlen (scan), VAR_NAMESPACE, LOC_CONST,
+ &objfile->static_psymbols, 0, 0, cu_language,
+ objfile);
scan += strlen (scan) + 1;
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- add_partial_symbol -- add symbol to partial symbol table
+ add_partial_symbol -- add symbol to partial symbol table
-DESCRIPTION
+ DESCRIPTION
- Given a DIE, if it is one of the types that we want to
- add to a partial symbol table, finish filling in the die info
- and then add a partial symbol table entry for it.
+ Given a DIE, if it is one of the types that we want to
+ add to a partial symbol table, finish filling in the die info
+ and then add a partial symbol table entry for it.
-*/
+ NOTES
+
+ The caller must ensure that the DIE has a valid name attribute.
+ */
static void
add_partial_symbol (dip, objfile)
struct dieinfo *dip;
struct objfile *objfile;
{
- switch (dip -> die_tag)
+ switch (dip->die_tag)
{
case TAG_global_subroutine:
- record_minimal_symbol (dip -> at_name, dip -> at_low_pc, mst_text,
- objfile);
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
VAR_NAMESPACE, LOC_BLOCK,
- objfile -> global_psymbols,
- dip -> at_low_pc);
+ &objfile->global_psymbols,
+ 0, dip->at_low_pc, cu_language, objfile);
break;
case TAG_global_variable:
- record_minimal_symbol (dip -> at_name, locval (dip -> at_location),
- mst_data, objfile);
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
VAR_NAMESPACE, LOC_STATIC,
- objfile -> global_psymbols,
- 0);
+ &objfile->global_psymbols,
+ 0, 0, cu_language, objfile);
break;
case TAG_subroutine:
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
VAR_NAMESPACE, LOC_BLOCK,
- objfile -> static_psymbols,
- dip -> at_low_pc);
+ &objfile->static_psymbols,
+ 0, dip->at_low_pc, cu_language, objfile);
break;
case TAG_local_variable:
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
VAR_NAMESPACE, LOC_STATIC,
- objfile -> static_psymbols,
- 0);
+ &objfile->static_psymbols,
+ 0, 0, cu_language, objfile);
break;
case TAG_typedef:
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
VAR_NAMESPACE, LOC_TYPEDEF,
- objfile -> static_psymbols,
- 0);
+ &objfile->static_psymbols,
+ 0, 0, cu_language, objfile);
break;
+ case TAG_class_type:
case TAG_structure_type:
case TAG_union_type:
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
- objfile -> static_psymbols,
- 0);
- break;
case TAG_enumeration_type:
- if (dip -> at_name)
+ /* Do not add opaque aggregate definitions to the psymtab. */
+ if (!dip->has_at_byte_size)
+ break;
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
+ STRUCT_NAMESPACE, LOC_TYPEDEF,
+ &objfile->static_psymbols,
+ 0, 0, cu_language, objfile);
+ if (cu_language == language_cplus)
{
- ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
- objfile -> static_psymbols,
- 0);
+ /* For C++, these implicitly act as typedefs as well. */
+ add_psymbol_to_list (dip->at_name, strlen (dip->at_name),
+ VAR_NAMESPACE, LOC_TYPEDEF,
+ &objfile->static_psymbols,
+ 0, 0, cu_language, objfile);
}
- add_enum_psymbol (dip, objfile);
break;
}
}
-
+/* *INDENT-OFF* */
/*
LOCAL FUNCTION
Process the DIE's within a single compilation unit, looking for
interesting DIE's that contribute to the partial symbol table entry
- for this compilation unit. Since we cannot follow any sibling
- chains without reading the complete DIE info for every DIE,
- it is probably faster to just sequentially check each one to
- see if it is one of the types we are interested in, and if so,
- then extract all the attributes info and generate a partial
- symbol table entry.
+ for this compilation unit.
NOTES
+ There are some DIE's that may appear both at file scope and within
+ the scope of a function. We are only interested in the ones at file
+ scope, and the only way to tell them apart is to keep track of the
+ scope. For example, consider the test case:
+
+ static int i;
+ main () { int j; }
+
+ for which the relevant DWARF segment has the structure:
+
+ 0x51:
+ 0x23 global subrtn sibling 0x9b
+ name main
+ fund_type FT_integer
+ low_pc 0x800004cc
+ high_pc 0x800004d4
+
+ 0x74:
+ 0x23 local var sibling 0x97
+ name j
+ fund_type FT_integer
+ location OP_BASEREG 0xe
+ OP_CONST 0xfffffffc
+ OP_ADD
+ 0x97:
+ 0x4
+
+ 0x9b:
+ 0x1d local var sibling 0xb8
+ name i
+ fund_type FT_integer
+ location OP_ADDR 0x800025dc
+
+ 0xb8:
+ 0x4
+
+ We want to include the symbol 'i' in the partial symbol table, but
+ not the symbol 'j'. In essence, we want to skip all the dies within
+ the scope of a TAG_global_subroutine DIE.
+
Don't attempt to add anonymous structures or unions since they have
no name. Anonymous enumerations however are processed, because we
want to extract their member names (the check for a tag name is
where the actual definition occurs, rather than just a reference
to an external.
*/
+/* *INDENT-ON* */
+
+
static void
scan_partial_symbols (thisdie, enddie, objfile)
struct objfile *objfile;
{
char *nextdie;
+ char *temp;
struct dieinfo di;
-
+
while (thisdie < enddie)
{
basicdieinfo (&di, thisdie, objfile);
{
case TAG_global_subroutine:
case TAG_subroutine:
+ completedieinfo (&di, objfile);
+ if (di.at_name && (di.has_at_low_pc || di.at_location))
+ {
+ add_partial_symbol (&di, objfile);
+ /* If there is a sibling attribute, adjust the nextdie
+ pointer to skip the entire scope of the subroutine.
+ Apply some sanity checking to make sure we don't
+ overrun or underrun the range of remaining DIE's */
+ if (di.at_sibling != 0)
+ {
+ temp = dbbase + di.at_sibling - dbroff;
+ if ((temp < thisdie) || (temp >= enddie))
+ {
+ complain (&bad_die_ref, DIE_ID, DIE_NAME,
+ di.at_sibling);
+ }
+ else
+ {
+ nextdie = temp;
+ }
+ }
+ }
+ break;
case TAG_global_variable:
case TAG_local_variable:
completedieinfo (&di, objfile);
}
break;
case TAG_typedef:
+ case TAG_class_type:
case TAG_structure_type:
case TAG_union_type:
completedieinfo (&di, objfile);
break;
case TAG_enumeration_type:
completedieinfo (&di, objfile);
- add_partial_symbol (&di, objfile);
+ if (di.at_name)
+ {
+ add_partial_symbol (&di, objfile);
+ }
+ add_enum_psymbol (&di, objfile);
break;
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- scan_compilation_units -- build a psymtab entry for each compilation
+ scan_compilation_units -- build a psymtab entry for each compilation
-DESCRIPTION
+ DESCRIPTION
- This is the top level dwarf parsing routine for building partial
- symbol tables.
-
- It scans from the beginning of the DWARF table looking for the first
- TAG_compile_unit DIE, and then follows the sibling chain to locate
- each additional TAG_compile_unit DIE.
-
- For each TAG_compile_unit DIE it creates a partial symtab structure,
- calls a subordinate routine to collect all the compilation unit's
- global DIE's, file scope DIEs, typedef DIEs, etc, and then links the
- new partial symtab structure into the partial symbol table. It also
- records the appropriate information in the partial symbol table entry
- to allow the chunk of DIE's and line number table for this compilation
- unit to be located and re-read later, to generate a complete symbol
- table entry for the compilation unit.
-
- Thus it effectively partitions up a chunk of DIE's for multiple
- compilation units into smaller DIE chunks and line number tables,
- and associates them with a partial symbol table entry.
+ This is the top level dwarf parsing routine for building partial
+ symbol tables.
-NOTES
+ It scans from the beginning of the DWARF table looking for the first
+ TAG_compile_unit DIE, and then follows the sibling chain to locate
+ each additional TAG_compile_unit DIE.
- If any compilation unit has no line number table associated with
- it for some reason (a missing at_stmt_list attribute, rather than
- just one with a value of zero, which is valid) then we ensure that
- the recorded file offset is zero so that the routine which later
- reads line number table fragments knows that there is no fragment
- to read.
+ For each TAG_compile_unit DIE it creates a partial symtab structure,
+ calls a subordinate routine to collect all the compilation unit's
+ global DIE's, file scope DIEs, typedef DIEs, etc, and then links the
+ new partial symtab structure into the partial symbol table. It also
+ records the appropriate information in the partial symbol table entry
+ to allow the chunk of DIE's and line number table for this compilation
+ unit to be located and re-read later, to generate a complete symbol
+ table entry for the compilation unit.
-RETURNS
+ Thus it effectively partitions up a chunk of DIE's for multiple
+ compilation units into smaller DIE chunks and line number tables,
+ and associates them with a partial symbol table entry.
- Returns no value.
+ NOTES
+
+ If any compilation unit has no line number table associated with
+ it for some reason (a missing at_stmt_list attribute, rather than
+ just one with a value of zero, which is valid) then we ensure that
+ the recorded file offset is zero so that the routine which later
+ reads line number table fragments knows that there is no fragment
+ to read.
+
+ RETURNS
+
+ Returns no value.
*/
static void
-scan_compilation_units (filename, thisdie, enddie, dbfoff, lnoffset, objfile)
- char *filename;
+scan_compilation_units (thisdie, enddie, dbfoff, lnoffset, objfile)
char *thisdie;
char *enddie;
- unsigned int dbfoff;
- unsigned int lnoffset;
+ file_ptr dbfoff;
+ file_ptr lnoffset;
struct objfile *objfile;
{
char *nextdie;
struct partial_symtab *pst;
int culength;
int curoff;
- int curlnoffset;
+ file_ptr curlnoffset;
while (thisdie < enddie)
{
else
{
completedieinfo (&di, objfile);
+ set_cu_language (&di);
if (di.at_sibling != 0)
{
nextdie = dbbase + di.at_sibling - dbroff;
/* First allocate a new partial symbol table structure */
- pst = start_psymtab_common (objfile, baseaddr, di.at_name,
- di.at_low_pc,
- objfile -> global_psymbols.next,
- objfile -> static_psymbols.next);
+ pst = start_psymtab_common (objfile, base_section_offsets,
+ di.at_name, di.at_low_pc,
+ objfile->global_psymbols.next,
+ objfile->static_psymbols.next);
- pst -> texthigh = di.at_high_pc;
- pst -> read_symtab_private = (char *)
- obstack_alloc (&objfile -> psymbol_obstack,
- sizeof (struct dwfinfo));
+ pst->texthigh = di.at_high_pc;
+ pst->read_symtab_private = (char *)
+ obstack_alloc (&objfile->psymbol_obstack,
+ sizeof (struct dwfinfo));
DBFOFF (pst) = dbfoff;
DBROFF (pst) = curoff;
DBLENGTH (pst) = culength;
- LNFOFF (pst) = curlnoffset;
- pst -> read_symtab = dwarf_psymtab_to_symtab;
+ LNFOFF (pst) = curlnoffset;
+ pst->read_symtab = dwarf_psymtab_to_symtab;
/* Now look for partial symbols */
scan_partial_symbols (thisdie + di.die_length, nextdie, objfile);
- pst -> n_global_syms = objfile -> global_psymbols.next -
- (objfile -> global_psymbols.list + pst -> globals_offset);
- pst -> n_static_syms = objfile -> static_psymbols.next -
- (objfile -> static_psymbols.list + pst -> statics_offset);
+ pst->n_global_syms = objfile->global_psymbols.next -
+ (objfile->global_psymbols.list + pst->globals_offset);
+ pst->n_static_syms = objfile->static_psymbols.next -
+ (objfile->static_psymbols.list + pst->statics_offset);
sort_pst_symbols (pst);
/* If there is already a psymtab or symtab for a file of this name,
remove it. (If there is a symtab, more drastic things also
happen.) This happens in VxWorks. */
- free_named_symtabs (pst -> filename);
+ free_named_symtabs (pst->filename);
}
- thisdie = nextdie;
+ thisdie = nextdie;
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- new_symbol -- make a symbol table entry for a new symbol
+ new_symbol -- make a symbol table entry for a new symbol
-SYNOPSIS
+ SYNOPSIS
- static struct symbol *new_symbol (struct dieinfo *dip,
- struct objfile *objfile)
+ static struct symbol *new_symbol (struct dieinfo *dip,
+ struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to a DWARF information entry, figure out if we need
- to make a symbol table entry for it, and if so, create a new entry
- and return a pointer to it.
+ Given a pointer to a DWARF information entry, figure out if we need
+ to make a symbol table entry for it, and if so, create a new entry
+ and return a pointer to it.
*/
static struct symbol *
struct objfile *objfile;
{
struct symbol *sym = NULL;
-
- if (dip -> at_name != NULL)
+
+ if (dip->at_name != NULL)
{
- sym = (struct symbol *) obstack_alloc (&objfile -> symbol_obstack,
+ sym = (struct symbol *) obstack_alloc (&objfile->symbol_obstack,
sizeof (struct symbol));
- (void) memset (sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (sym) = create_name (dip -> at_name, &objfile->symbol_obstack);
+ OBJSTAT (objfile, n_syms++);
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = create_name (dip->at_name,
+ &objfile->symbol_obstack);
/* default assumptions */
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_TYPE (sym) = decode_die_type (dip);
- switch (dip -> die_tag)
+
+ /* If this symbol is from a C++ compilation, then attempt to cache the
+ demangled form for future reference. This is a typical time versus
+ space tradeoff, that was decided in favor of time because it sped up
+ C++ symbol lookups by a factor of about 20. */
+
+ SYMBOL_LANGUAGE (sym) = cu_language;
+ SYMBOL_INIT_DEMANGLED_NAME (sym, &objfile->symbol_obstack);
+ switch (dip->die_tag)
{
case TAG_label:
- SYMBOL_VALUE (sym) = dip -> at_low_pc;
+ SYMBOL_VALUE_ADDRESS (sym) = dip->at_low_pc;
SYMBOL_CLASS (sym) = LOC_LABEL;
break;
case TAG_global_subroutine:
case TAG_subroutine:
- SYMBOL_VALUE (sym) = dip -> at_low_pc;
+ SYMBOL_VALUE_ADDRESS (sym) = dip->at_low_pc;
SYMBOL_TYPE (sym) = lookup_function_type (SYMBOL_TYPE (sym));
+ if (dip->at_prototyped)
+ TYPE_FLAGS (SYMBOL_TYPE (sym)) |= TYPE_FLAG_PROTOTYPED;
SYMBOL_CLASS (sym) = LOC_BLOCK;
- if (dip -> die_tag == TAG_global_subroutine)
+ if (dip->die_tag == TAG_global_subroutine)
{
add_symbol_to_list (sym, &global_symbols);
}
}
break;
case TAG_global_variable:
- if (dip -> at_location != NULL)
+ if (dip->at_location != NULL)
{
- SYMBOL_VALUE (sym) = locval (dip -> at_location);
+ SYMBOL_VALUE_ADDRESS (sym) = locval (dip);
add_symbol_to_list (sym, &global_symbols);
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_VALUE (sym) += baseaddr;
}
break;
case TAG_local_variable:
- if (dip -> at_location != NULL)
+ if (dip->at_location != NULL)
{
- SYMBOL_VALUE (sym) = locval (dip -> at_location);
- add_symbol_to_list (sym, list_in_scope);
- if (isreg)
+ int loc = locval (dip);
+ if (dip->optimized_out)
+ {
+ SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT;
+ }
+ else if (dip->isreg)
{
SYMBOL_CLASS (sym) = LOC_REGISTER;
}
- else if (offreg)
+ else if (dip->offreg)
{
- SYMBOL_CLASS (sym) = LOC_LOCAL;
+ SYMBOL_CLASS (sym) = LOC_BASEREG;
+ SYMBOL_BASEREG (sym) = dip->basereg;
}
else
{
SYMBOL_CLASS (sym) = LOC_STATIC;
SYMBOL_VALUE (sym) += baseaddr;
}
+ if (SYMBOL_CLASS (sym) == LOC_STATIC)
+ {
+ /* LOC_STATIC address class MUST use SYMBOL_VALUE_ADDRESS,
+ which may store to a bigger location than SYMBOL_VALUE. */
+ SYMBOL_VALUE_ADDRESS (sym) = loc;
+ }
+ else
+ {
+ SYMBOL_VALUE (sym) = loc;
+ }
+ add_symbol_to_list (sym, list_in_scope);
}
break;
case TAG_formal_parameter:
- if (dip -> at_location != NULL)
+ if (dip->at_location != NULL)
{
- SYMBOL_VALUE (sym) = locval (dip -> at_location);
+ SYMBOL_VALUE (sym) = locval (dip);
}
add_symbol_to_list (sym, list_in_scope);
- if (isreg)
+ if (dip->isreg)
{
SYMBOL_CLASS (sym) = LOC_REGPARM;
}
+ else if (dip->offreg)
+ {
+ SYMBOL_CLASS (sym) = LOC_BASEREG_ARG;
+ SYMBOL_BASEREG (sym) = dip->basereg;
+ }
else
{
SYMBOL_CLASS (sym) = LOC_ARG;
/* From varargs functions; gdb doesn't seem to have any interest in
this information, so just ignore it for now. (FIXME?) */
break;
+ case TAG_class_type:
case TAG_structure_type:
case TAG_union_type:
case TAG_enumeration_type:
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_mod_fund_type -- decode a modified fundamental type
+ synthesize_typedef -- make a symbol table entry for a "fake" typedef
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_mod_fund_type (char *typedata)
+ static void synthesize_typedef (struct dieinfo *dip,
+ struct objfile *objfile,
+ struct type *type);
-DESCRIPTION
+ DESCRIPTION
+
+ Given a pointer to a DWARF information entry, synthesize a typedef
+ for the name in the DIE, using the specified type.
+
+ This is used for C++ class, structs, unions, and enumerations to
+ set up the tag name as a type.
+
+ */
+
+static void
+synthesize_typedef (dip, objfile, type)
+ struct dieinfo *dip;
+ struct objfile *objfile;
+ struct type *type;
+{
+ struct symbol *sym = NULL;
+
+ if (dip->at_name != NULL)
+ {
+ sym = (struct symbol *)
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct symbol));
+ OBJSTAT (objfile, n_syms++);
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = create_name (dip->at_name,
+ &objfile->symbol_obstack);
+ SYMBOL_INIT_LANGUAGE_SPECIFIC (sym, cu_language);
+ SYMBOL_TYPE (sym) = type;
+ SYMBOL_CLASS (sym) = LOC_TYPEDEF;
+ SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
+ add_symbol_to_list (sym, list_in_scope);
+ }
+}
+
+/*
+
+ LOCAL FUNCTION
+
+ decode_mod_fund_type -- decode a modified fundamental type
+
+ SYNOPSIS
+
+ static struct type *decode_mod_fund_type (char *typedata)
- Decode a block of data containing a modified fundamental
- type specification. TYPEDATA is a pointer to the block,
- which starts with a length containing the size of the rest
- of the block. At the end of the block is a fundmental type
- code value that gives the fundamental type. Everything
- in between are type modifiers.
+ DESCRIPTION
- We simply compute the number of modifiers and call the general
- function decode_modified_type to do the actual work.
-*/
+ Decode a block of data containing a modified fundamental
+ type specification. TYPEDATA is a pointer to the block,
+ which starts with a length containing the size of the rest
+ of the block. At the end of the block is a fundmental type
+ code value that gives the fundamental type. Everything
+ in between are type modifiers.
+
+ We simply compute the number of modifiers and call the general
+ function decode_modified_type to do the actual work.
+ */
static struct type *
decode_mod_fund_type (typedata)
struct type *typep = NULL;
unsigned short modcount;
int nbytes;
-
+
/* Get the total size of the block, exclusive of the size itself */
nbytes = attribute_size (AT_mod_fund_type);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_mod_u_d_type -- decode a modified user defined type
+ decode_mod_u_d_type -- decode a modified user defined type
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_mod_u_d_type (char *typedata)
+ static struct type *decode_mod_u_d_type (char *typedata)
-DESCRIPTION
+ DESCRIPTION
- Decode a block of data containing a modified user defined
- type specification. TYPEDATA is a pointer to the block,
- which consists of a two byte length, containing the size
- of the rest of the block. At the end of the block is a
- four byte value that gives a reference to a user defined type.
- Everything in between are type modifiers.
+ Decode a block of data containing a modified user defined
+ type specification. TYPEDATA is a pointer to the block,
+ which consists of a two byte length, containing the size
+ of the rest of the block. At the end of the block is a
+ four byte value that gives a reference to a user defined type.
+ Everything in between are type modifiers.
- We simply compute the number of modifiers and call the general
- function decode_modified_type to do the actual work.
-*/
+ We simply compute the number of modifiers and call the general
+ function decode_modified_type to do the actual work.
+ */
static struct type *
decode_mod_u_d_type (typedata)
struct type *typep = NULL;
unsigned short modcount;
int nbytes;
-
+
/* Get the total size of the block, exclusive of the size itself */
nbytes = attribute_size (AT_mod_u_d_type);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_modified_type -- decode modified user or fundamental type
+ decode_modified_type -- decode modified user or fundamental type
-SYNOPSIS
+ SYNOPSIS
- static struct type *decode_modified_type (unsigned char *modifiers,
- unsigned short modcount, int mtype)
+ static struct type *decode_modified_type (char *modifiers,
+ unsigned short modcount, int mtype)
-DESCRIPTION
+ DESCRIPTION
- Decode a modified type, either a modified fundamental type or
- a modified user defined type. MODIFIERS is a pointer to the
- block of bytes that define MODCOUNT modifiers. Immediately
- following the last modifier is a short containing the fundamental
- type or a long containing the reference to the user defined
- type. Which one is determined by MTYPE, which is either
- AT_mod_fund_type or AT_mod_u_d_type to indicate what modified
- type we are generating.
-
- We call ourself recursively to generate each modified type,`
- until MODCOUNT reaches zero, at which point we have consumed
- all the modifiers and generate either the fundamental type or
- user defined type. When the recursion unwinds, each modifier
- is applied in turn to generate the full modified type.
+ Decode a modified type, either a modified fundamental type or
+ a modified user defined type. MODIFIERS is a pointer to the
+ block of bytes that define MODCOUNT modifiers. Immediately
+ following the last modifier is a short containing the fundamental
+ type or a long containing the reference to the user defined
+ type. Which one is determined by MTYPE, which is either
+ AT_mod_fund_type or AT_mod_u_d_type to indicate what modified
+ type we are generating.
-NOTES
+ We call ourself recursively to generate each modified type,`
+ until MODCOUNT reaches zero, at which point we have consumed
+ all the modifiers and generate either the fundamental type or
+ user defined type. When the recursion unwinds, each modifier
+ is applied in turn to generate the full modified type.
- If we find a modifier that we don't recognize, and it is not one
- of those reserved for application specific use, then we issue a
- warning and simply ignore the modifier.
+ NOTES
-BUGS
+ If we find a modifier that we don't recognize, and it is not one
+ of those reserved for application specific use, then we issue a
+ warning and simply ignore the modifier.
- We currently ignore MOD_const and MOD_volatile. (FIXME)
+ BUGS
+
+ We currently ignore MOD_const and MOD_volatile. (FIXME)
*/
static struct type *
decode_modified_type (modifiers, modcount, mtype)
- unsigned char *modifiers;
+ char *modifiers;
unsigned int modcount;
int mtype;
{
struct type *typep = NULL;
unsigned short fundtype;
DIE_REF die_ref;
- unsigned char modifier;
+ char modifier;
int nbytes;
-
+
if (modcount == 0)
{
switch (mtype)
}
break;
default:
- SQUAWK (("botched modified type decoding (mtype 0x%x)", mtype));
- typep = lookup_fundamental_type (current_objfile, FT_INTEGER);
+ complain (&botched_modified_type, DIE_ID, DIE_NAME, mtype);
+ typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
break;
}
}
typep = decode_modified_type (modifiers, --modcount, mtype);
switch (modifier)
{
- case MOD_pointer_to:
- typep = lookup_pointer_type (typep);
- break;
- case MOD_reference_to:
- typep = lookup_reference_type (typep);
- break;
- case MOD_const:
- SQUAWK (("type modifier 'const' ignored")); /* FIXME */
- break;
- case MOD_volatile:
- SQUAWK (("type modifier 'volatile' ignored")); /* FIXME */
- break;
- default:
- if (!(MOD_lo_user <= modifier && modifier <= MOD_hi_user))
- {
- SQUAWK (("unknown type modifier %u", modifier));
- }
- break;
+ case MOD_pointer_to:
+ typep = lookup_pointer_type (typep);
+ break;
+ case MOD_reference_to:
+ typep = lookup_reference_type (typep);
+ break;
+ case MOD_const:
+ complain (&const_ignored, DIE_ID, DIE_NAME); /* FIXME */
+ break;
+ case MOD_volatile:
+ complain (&volatile_ignored, DIE_ID, DIE_NAME); /* FIXME */
+ break;
+ default:
+ if (!(MOD_lo_user <= (unsigned char) modifier
+ && (unsigned char) modifier <= MOD_hi_user))
+ {
+ complain (&unknown_type_modifier, DIE_ID, DIE_NAME, modifier);
+ }
+ break;
}
}
return (typep);
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- decode_fund_type -- translate basic DWARF type to gdb base type
+ decode_fund_type -- translate basic DWARF type to gdb base type
-DESCRIPTION
+ DESCRIPTION
- Given an integer that is one of the fundamental DWARF types,
- translate it to one of the basic internal gdb types and return
- a pointer to the appropriate gdb type (a "struct type *").
+ Given an integer that is one of the fundamental DWARF types,
+ translate it to one of the basic internal gdb types and return
+ a pointer to the appropriate gdb type (a "struct type *").
-NOTES
+ NOTES
- If we encounter a fundamental type that we are unprepared to
- deal with, and it is not in the range of those types defined
- as application specific types, then we issue a warning and
- treat the type as an "int".
-*/
+ For robustness, if we are asked to translate a fundamental
+ type that we are unprepared to deal with, we return int so
+ callers can always depend upon a valid type being returned,
+ and so gdb may at least do something reasonable by default.
+ If the type is not in the range of those types defined as
+ application specific types, we also issue a warning.
+ */
static struct type *
decode_fund_type (fundtype)
unsigned int fundtype;
{
struct type *typep = NULL;
-
+
switch (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;
-
+
}
- if ((typep == NULL) && !(FT_lo_user <= fundtype && fundtype <= FT_hi_user))
+ if (typep == NULL)
{
- SQUAWK (("unexpected fundamental type 0x%x", fundtype));
- typep = lookup_fundamental_type (current_objfile, FT_VOID);
+ typep = dwarf_fundamental_type (current_objfile, FT_INTEGER);
+ if (!(FT_lo_user <= fundtype && fundtype <= FT_hi_user))
+ {
+ complain (&unexpected_fund_type, DIE_ID, DIE_NAME, fundtype);
+ }
}
-
+
return (typep);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- create_name -- allocate a fresh copy of a string on an obstack
+ create_name -- allocate a fresh copy of a string on an obstack
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to a string and a pointer to an obstack, allocates
- a fresh copy of the string on the specified obstack.
+ Given a pointer to a string and a pointer to an obstack, allocates
+ a fresh copy of the string on the specified obstack.
-*/
+ */
static char *
create_name (name, obstackp)
length = strlen (name) + 1;
newname = (char *) obstack_alloc (obstackp, length);
- (void) strcpy (newname, name);
+ strcpy (newname, name);
return (newname);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- basicdieinfo -- extract the minimal die info from raw die data
+ basicdieinfo -- extract the minimal die info from raw die data
-SYNOPSIS
+ SYNOPSIS
- void basicdieinfo (char *diep, struct dieinfo *dip,
- struct objfile *objfile)
+ void basicdieinfo (char *diep, struct dieinfo *dip,
+ struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to raw DIE data, and a pointer to an instance of a
- die info structure, this function extracts the basic information
- from the DIE data required to continue processing this DIE, along
- with some bookkeeping information about the DIE.
+ Given a pointer to raw DIE data, and a pointer to an instance of a
+ die info structure, this function extracts the basic information
+ from the DIE data required to continue processing this DIE, along
+ with some bookkeeping information about the DIE.
- The information we absolutely must have includes the DIE tag,
- and the DIE length. If we need the sibling reference, then we
- will have to call completedieinfo() to process all the remaining
- DIE information.
+ The information we absolutely must have includes the DIE tag,
+ and the DIE length. If we need the sibling reference, then we
+ will have to call completedieinfo() to process all the remaining
+ DIE information.
- Note that since there is no guarantee that the data is properly
- aligned in memory for the type of access required (indirection
- through anything other than a char pointer), and there is no
- guarantee that it is in the same byte order as the gdb host,
- we call a function which deals with both alignment and byte
- swapping issues. Possibly inefficient, but quite portable.
+ Note that since there is no guarantee that the data is properly
+ aligned in memory for the type of access required (indirection
+ through anything other than a char pointer), and there is no
+ guarantee that it is in the same byte order as the gdb host,
+ we call a function which deals with both alignment and byte
+ swapping issues. Possibly inefficient, but quite portable.
- We also take care of some other basic things at this point, such
- as ensuring that the instance of the die info structure starts
- out completely zero'd and that curdie is initialized for use
- in error reporting if we have a problem with the current die.
+ We also take care of some other basic things at this point, such
+ as ensuring that the instance of the die info structure starts
+ out completely zero'd and that curdie is initialized for use
+ in error reporting if we have a problem with the current die.
-NOTES
+ NOTES
- All DIE's must have at least a valid length, thus the minimum
- DIE size is SIZEOF_DIE_LENGTH. In order to have a valid tag, the
- DIE size must be at least SIZEOF_DIE_TAG larger, otherwise they
- are forced to be TAG_padding DIES.
+ All DIE's must have at least a valid length, thus the minimum
+ DIE size is SIZEOF_DIE_LENGTH. In order to have a valid tag, the
+ DIE size must be at least SIZEOF_DIE_TAG larger, otherwise they
+ are forced to be TAG_padding DIES.
- Padding DIES must be at least SIZEOF_DIE_LENGTH in length, implying
- that if a padding DIE is used for alignment and the amount needed is
- less than SIZEOF_DIE_LENGTH, then the padding DIE has to be big
- enough to align to the next alignment boundry.
+ Padding DIES must be at least SIZEOF_DIE_LENGTH in length, implying
+ that if a padding DIE is used for alignment and the amount needed is
+ less than SIZEOF_DIE_LENGTH, then the padding DIE has to be big
+ enough to align to the next alignment boundry.
+
+ We do some basic sanity checking here, such as verifying that the
+ length of the die would not cause it to overrun the recorded end of
+ the buffer holding the DIE info. If we find a DIE that is either
+ too small or too large, we force it's length to zero which should
+ cause the caller to take appropriate action.
*/
static void
struct objfile *objfile;
{
curdie = dip;
- (void) memset (dip, 0, sizeof (struct dieinfo));
- dip -> die = diep;
- dip -> die_ref = dbroff + (diep - dbbase);
- dip -> die_length = target_to_host (diep, SIZEOF_DIE_LENGTH, GET_UNSIGNED,
- objfile);
- if (dip -> die_length < SIZEOF_DIE_LENGTH)
+ memset (dip, 0, sizeof (struct dieinfo));
+ dip->die = diep;
+ dip->die_ref = dbroff + (diep - dbbase);
+ dip->die_length = target_to_host (diep, SIZEOF_DIE_LENGTH, GET_UNSIGNED,
+ objfile);
+ if ((dip->die_length < SIZEOF_DIE_LENGTH) ||
+ ((diep + dip->die_length) > (dbbase + dbsize)))
{
- dwarfwarn ("malformed DIE, bad length (%d bytes)", dip -> die_length);
+ complain (&malformed_die, DIE_ID, DIE_NAME, dip->die_length);
+ dip->die_length = 0;
}
- else if (dip -> die_length < (SIZEOF_DIE_LENGTH + SIZEOF_DIE_TAG))
+ else if (dip->die_length < (SIZEOF_DIE_LENGTH + SIZEOF_DIE_TAG))
{
- dip -> die_tag = TAG_padding;
+ dip->die_tag = TAG_padding;
}
else
{
diep += SIZEOF_DIE_LENGTH;
- dip -> die_tag = target_to_host (diep, SIZEOF_DIE_TAG, GET_UNSIGNED,
- objfile);
+ dip->die_tag = target_to_host (diep, SIZEOF_DIE_TAG, GET_UNSIGNED,
+ objfile);
}
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- completedieinfo -- finish reading the information for a given DIE
+ completedieinfo -- finish reading the information for a given DIE
-SYNOPSIS
+ SYNOPSIS
- void completedieinfo (struct dieinfo *dip, struct objfile *objfile)
+ void completedieinfo (struct dieinfo *dip, struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given a pointer to an already partially initialized die info structure,
- scan the raw DIE data and finish filling in the die info structure
- from the various attributes found.
-
- Note that since there is no guarantee that the data is properly
- aligned in memory for the type of access required (indirection
- through anything other than a char pointer), and there is no
- guarantee that it is in the same byte order as the gdb host,
- we call a function which deals with both alignment and byte
- swapping issues. Possibly inefficient, but quite portable.
+ Given a pointer to an already partially initialized die info structure,
+ scan the raw DIE data and finish filling in the die info structure
+ from the various attributes found.
-NOTES
+ Note that since there is no guarantee that the data is properly
+ aligned in memory for the type of access required (indirection
+ through anything other than a char pointer), and there is no
+ guarantee that it is in the same byte order as the gdb host,
+ we call a function which deals with both alignment and byte
+ swapping issues. Possibly inefficient, but quite portable.
- Each time we are called, we increment the diecount variable, which
- keeps an approximate count of the number of dies processed for
- each compilation unit. This information is presented to the user
- if the info_verbose flag is set.
+ NOTES
+
+ Each time we are called, we increment the diecount variable, which
+ keeps an approximate count of the number of dies processed for
+ each compilation unit. This information is presented to the user
+ if the info_verbose flag is set.
*/
unsigned short attr; /* Current attribute being scanned */
unsigned short form; /* Form of the attribute */
int nbytes; /* Size of next field to read */
-
+
diecount++;
- diep = dip -> die;
- end = diep + dip -> die_length;
+ diep = dip->die;
+ end = diep + dip->die_length;
diep += SIZEOF_DIE_LENGTH + SIZEOF_DIE_TAG;
while (diep < end)
{
diep += SIZEOF_ATTRIBUTE;
if ((nbytes = attribute_size (attr)) == -1)
{
- SQUAWK (("unknown attribute length, skipped remaining attributes"));;
+ complain (&unknown_attribute_length, DIE_ID, DIE_NAME);
diep = end;
continue;
}
switch (attr)
{
case AT_fund_type:
- dip -> at_fund_type = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_fund_type = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_ordering:
- dip -> at_ordering = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_ordering = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_bit_offset:
- dip -> at_bit_offset = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
- break;
- case AT_visibility:
- dip -> at_visibility = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_bit_offset = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_sibling:
- dip -> at_sibling = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_sibling = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_stmt_list:
- dip -> at_stmt_list = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
- dip -> has_at_stmt_list = 1;
+ dip->at_stmt_list = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
+ dip->has_at_stmt_list = 1;
break;
case AT_low_pc:
- dip -> at_low_pc = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
- dip -> at_low_pc += baseaddr;
- dip -> has_at_low_pc = 1;
+ dip->at_low_pc = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
+ dip->at_low_pc += baseaddr;
+ dip->has_at_low_pc = 1;
break;
case AT_high_pc:
- dip -> at_high_pc = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
- dip -> at_high_pc += baseaddr;
+ dip->at_high_pc = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
+ dip->at_high_pc += baseaddr;
break;
case AT_language:
- dip -> at_language = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_language = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_user_def_type:
- dip -> at_user_def_type = target_to_host (diep, nbytes,
- GET_UNSIGNED, objfile);
+ dip->at_user_def_type = target_to_host (diep, nbytes,
+ GET_UNSIGNED, objfile);
break;
case AT_byte_size:
- dip -> at_byte_size = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_byte_size = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
+ dip->has_at_byte_size = 1;
break;
case AT_bit_size:
- dip -> at_bit_size = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_bit_size = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_member:
- dip -> at_member = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_member = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_discr:
- dip -> at_discr = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
- break;
- case AT_import:
- dip -> at_import = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_discr = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_location:
- dip -> at_location = diep;
+ dip->at_location = diep;
break;
case AT_mod_fund_type:
- dip -> at_mod_fund_type = diep;
+ dip->at_mod_fund_type = diep;
break;
case AT_subscr_data:
- dip -> at_subscr_data = diep;
+ dip->at_subscr_data = diep;
break;
case AT_mod_u_d_type:
- dip -> at_mod_u_d_type = diep;
+ dip->at_mod_u_d_type = diep;
break;
case AT_element_list:
- dip -> at_element_list = diep;
- dip -> short_element_list = 0;
+ dip->at_element_list = diep;
+ dip->short_element_list = 0;
break;
case AT_short_element_list:
- dip -> at_element_list = diep;
- dip -> short_element_list = 1;
+ dip->at_element_list = diep;
+ dip->short_element_list = 1;
break;
case AT_discr_value:
- dip -> at_discr_value = diep;
+ dip->at_discr_value = diep;
break;
case AT_string_length:
- dip -> at_string_length = diep;
+ dip->at_string_length = diep;
break;
case AT_name:
- dip -> at_name = diep;
+ dip->at_name = diep;
break;
case AT_comp_dir:
- dip -> at_comp_dir = diep;
+ /* For now, ignore any "hostname:" portion, since gdb doesn't
+ know how to deal with it. (FIXME). */
+ dip->at_comp_dir = strrchr (diep, ':');
+ if (dip->at_comp_dir != NULL)
+ {
+ dip->at_comp_dir++;
+ }
+ else
+ {
+ dip->at_comp_dir = diep;
+ }
break;
case AT_producer:
- dip -> at_producer = diep;
- break;
- case AT_frame_base:
- dip -> at_frame_base = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_producer = diep;
break;
case AT_start_scope:
- dip -> at_start_scope = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_start_scope = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_stride_size:
- dip -> at_stride_size = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_stride_size = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_src_info:
- dip -> at_src_info = target_to_host (diep, nbytes, GET_UNSIGNED,
- objfile);
+ dip->at_src_info = target_to_host (diep, nbytes, GET_UNSIGNED,
+ objfile);
break;
case AT_prototyped:
- dip -> at_prototyped = diep;
+ dip->at_prototyped = diep;
break;
default:
/* Found an attribute that we are unprepared to handle. However
diep += strlen (diep) + 1;
break;
default:
- SQUAWK (("unknown attribute form (0x%x)", form));
- SQUAWK (("unknown attribute length, skipped remaining attributes"));;
+ complain (&unknown_attribute_form, DIE_ID, DIE_NAME, form);
diep = end;
break;
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- target_to_host -- swap in target data to host
+ target_to_host -- swap in target data to host
-SYNOPSIS
+ SYNOPSIS
- target_to_host (char *from, int nbytes, int signextend,
- struct objfile *objfile)
+ target_to_host (char *from, int nbytes, int signextend,
+ struct objfile *objfile)
-DESCRIPTION
+ DESCRIPTION
- Given pointer to data in target format in FROM, a byte count for
- the size of the data in NBYTES, a flag indicating whether or not
- the data is signed in SIGNEXTEND, and a pointer to the current
- objfile in OBJFILE, convert the data to host format and return
- the converted value.
+ Given pointer to data in target format in FROM, a byte count for
+ the size of the data in NBYTES, a flag indicating whether or not
+ the data is signed in SIGNEXTEND, and a pointer to the current
+ objfile in OBJFILE, convert the data to host format and return
+ the converted value.
-NOTES
+ NOTES
- FIXME: If we read data that is known to be signed, and expect to
- use it as signed data, then we need to explicitly sign extend the
- result until the bfd library is able to do this for us.
+ FIXME: If we read data that is known to be signed, and expect to
+ use it as signed data, then we need to explicitly sign extend the
+ result until the bfd library is able to do this for us.
+
+ FIXME: Would a 32 bit target ever need an 8 byte result?
*/
-static unsigned long
+static CORE_ADDR
target_to_host (from, nbytes, signextend, objfile)
char *from;
int nbytes;
int signextend; /* FIXME: Unused */
struct objfile *objfile;
{
- unsigned long rtnval;
+ CORE_ADDR rtnval;
switch (nbytes)
{
- case 8:
- rtnval = bfd_get_64 (objfile -> obfd, (bfd_byte *) from);
- break;
- case 4:
- rtnval = bfd_get_32 (objfile -> obfd, (bfd_byte *) from);
- break;
- case 2:
- rtnval = bfd_get_16 (objfile -> obfd, (bfd_byte *) from);
- break;
- case 1:
- rtnval = bfd_get_8 (objfile -> obfd, (bfd_byte *) from);
- break;
- default:
- dwarfwarn ("no bfd support for %d byte data object", nbytes);
- rtnval = 0;
- break;
+ case 8:
+ rtnval = bfd_get_64 (objfile->obfd, (bfd_byte *) from);
+ break;
+ case 4:
+ rtnval = bfd_get_32 (objfile->obfd, (bfd_byte *) from);
+ break;
+ case 2:
+ rtnval = bfd_get_16 (objfile->obfd, (bfd_byte *) from);
+ break;
+ case 1:
+ rtnval = bfd_get_8 (objfile->obfd, (bfd_byte *) from);
+ break;
+ default:
+ complain (&no_bfd_get_N, DIE_ID, DIE_NAME, nbytes);
+ rtnval = 0;
+ break;
}
return (rtnval);
}
/*
-LOCAL FUNCTION
+ LOCAL FUNCTION
- attribute_size -- compute size of data for a DWARF attribute
+ attribute_size -- compute size of data for a DWARF attribute
-SYNOPSIS
+ SYNOPSIS
- static int attribute_size (unsigned int attr)
+ static int attribute_size (unsigned int attr)
-DESCRIPTION
+ DESCRIPTION
- Given a DWARF attribute in ATTR, compute the size of the first
- piece of data associated with this attribute and return that
- size.
+ Given a DWARF attribute in ATTR, compute the size of the first
+ piece of data associated with this attribute and return that
+ size.
- Returns -1 for unrecognized attributes.
+ Returns -1 for unrecognized attributes.
*/
form = FORM_FROM_ATTR (attr);
switch (form)
{
- case FORM_STRING: /* A variable length field is next */
- nbytes = 0;
- break;
- case FORM_DATA2: /* Next 2 byte field is the data itself */
- case FORM_BLOCK2: /* Next 2 byte field is a block length */
- nbytes = 2;
- break;
- case FORM_DATA4: /* Next 4 byte field is the data itself */
- case FORM_BLOCK4: /* Next 4 byte field is a block length */
- case FORM_REF: /* Next 4 byte field is a DIE offset */
- nbytes = 4;
- break;
- case FORM_DATA8: /* Next 8 byte field is the data itself */
- nbytes = 8;
- break;
- case FORM_ADDR: /* Next field size is target sizeof(void *) */
- nbytes = TARGET_FT_POINTER_SIZE (objfile);
- break;
- default:
- SQUAWK (("unknown attribute form (0x%x)", form));
- nbytes = -1;
- break;
- }
+ case FORM_STRING: /* A variable length field is next */
+ nbytes = 0;
+ break;
+ case FORM_DATA2: /* Next 2 byte field is the data itself */
+ case FORM_BLOCK2: /* Next 2 byte field is a block length */
+ nbytes = 2;
+ break;
+ case FORM_DATA4: /* Next 4 byte field is the data itself */
+ case FORM_BLOCK4: /* Next 4 byte field is a block length */
+ case FORM_REF: /* Next 4 byte field is a DIE offset */
+ nbytes = 4;
+ break;
+ case FORM_DATA8: /* Next 8 byte field is the data itself */
+ nbytes = 8;
+ break;
+ case FORM_ADDR: /* Next field size is target sizeof(void *) */
+ nbytes = TARGET_FT_POINTER_SIZE (objfile);
+ break;
+ default:
+ complain (&unknown_attribute_form, DIE_ID, DIE_NAME, form);
+ nbytes = -1;
+ break;
+ }
return (nbytes);
}
projects / deliverable / binutils-gdb.git / blobdiff