#include "libbfd.h" /* FIXME Secret Internal BFD stuff (bfd_read) */
#include "elf/dwarf.h"
#include "buildsym.h"
+#include "demangle.h"
#ifdef MAINTENANCE /* Define to 1 to compile in some maintenance stuff */
#define SQUAWK(stuff) dwarfwarn stuff
#define GCC_PRODUCER "GNU C "
#endif
+#ifndef GPLUS_PRODUCER
+#define GPLUS_PRODUCER "GNU C++ "
+#endif
+
+#ifndef LCC_PRODUCER
+#define LCC_PRODUCER "NCR C/C++"
+#endif
+
+#ifndef CFRONT_PRODUCER
+#define CFRONT_PRODUCER "CFRONT " /* A wild a** guess... */
+#endif
+
#define STREQ(a,b) (strcmp(a,b)==0)
#define STREQN(a,b,n) (strncmp(a,b,n)==0)
/* Macros that return the sizes of various types of data in the target
environment.
- FIXME: They currently just return the sizes in the host environment.
- They need to be able to get the right size either from the bfd or possibly
- from the DWARF info. It would be nice if the DWARF producer inserted DIES
- that describe the fundamental types in the target environment into the
- DWARF info, similar to the way dbx stabs producers produce information
- about their fundamental types. */
+ FIXME: Currently these are just compile time constants (as they are in
+ other parts of gdb as well). They need to be able to get the right size
+ either from the bfd or possibly from the DWARF info. It would be nice if
+ the DWARF producer inserted DIES that describe the fundamental types in
+ the target environment into the DWARF info, similar to the way dbx stabs
+ producers produce information about their fundamental types. */
-#define TARGET_FT_POINTER_SIZE(objfile) sizeof (PTR) /* FIXME */
-#define TARGET_FT_LONG_SIZE(objfile) sizeof (long) /* FIXME */
+#define TARGET_FT_POINTER_SIZE(objfile) (TARGET_PTR_BIT / TARGET_CHAR_BIT)
+#define TARGET_FT_LONG_SIZE(objfile) (TARGET_LONG_BIT / TARGET_CHAR_BIT)
/* The Amiga SVR4 header file <dwarf.h> defines AT_element_list as a
FORM_BLOCK2, and this is the value emitted by the AT&T compiler.
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 has_at_byte_size:1;
unsigned int short_element_list:1;
};
static struct dieinfo *curdie; /* For warnings and such */
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 */
static int isreg; /* Kludge to identify register variables */
static int offreg; /* Kludge to identify basereg references */
+/* This value is added to each symbol value. FIXME: Generalize to
+ the section_offsets structure used by dbxread. */
static CORE_ADDR baseaddr; /* Add to each symbol value */
+/* 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;
+
/* 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
static struct type **utypes; /* Pointer to array of user type pointers */
static int numutypes; /* Max number of user type pointers */
+/* 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. */
+
+static enum language cu_language;
+
/* Forward declarations of static functions so we don't have to worry
about ordering within this file. */
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 *));
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));
static struct symbol *
new_symbol PARAMS ((struct dieinfo *, struct objfile *));
+static void
+synthesize_typedef PARAMS ((struct dieinfo *, struct objfile *,
+ struct type *));
+
static int
locval PARAMS ((char *));
record_minimal_symbol PARAMS ((char *, CORE_ADDR, enum minimal_symbol_type,
struct objfile *));
+static void
+set_cu_language PARAMS ((struct dieinfo *));
+
+/*
+
+LOCAL FUNCTION
+
+ set_cu_language -- set local copy of language for compilation unit
+
+SYNOPSIS
+
+ void
+ set_cu_language (struct dieinfo *dip)
+
+DESCRIPTION
+
+ 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
+set_cu_language (dip)
+ struct dieinfo *dip;
+{
+ 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_ADA83:
+ case LANG_COBOL74:
+ case LANG_COBOL85:
+ case LANG_FORTRAN77:
+ case LANG_FORTRAN90:
+ case LANG_PASCAL83:
+ case LANG_MODULA2:
+ default:
+ cu_language = language_unknown;
+ break;
+ }
+}
+
/*
GLOBAL FUNCTION
SYNOPSIS
- void dwarf_build_psymtabs (int desc, char *filename, CORE_ADDR addr,
- int mainline, unsigned int dbfoff, unsigned int dbsize,
+ void dwarf_build_psymtabs (int desc, char *filename,
+ struct section_offsets *section_offsets,
+ int mainline, unsigned int dbfoff, unsigned int dbfsize,
unsigned int lnoffset, unsigned int lnsize,
struct objfile *objfile)
*/
void
-dwarf_build_psymtabs (desc, filename, addr, mainline, dbfoff, dbsize,
+dwarf_build_psymtabs (desc, filename, section_offsets, mainline, dbfoff, dbfsize,
lnoffset, lnsize, objfile)
int desc;
char *filename;
- CORE_ADDR addr;
+ struct section_offsets *section_offsets;
int mainline;
unsigned int dbfoff;
- unsigned int dbsize;
+ unsigned int dbfsize;
unsigned int lnoffset;
unsigned int lnsize;
struct objfile *objfile;
struct cleanup *back_to;
current_objfile = objfile;
+ dbsize = dbfsize;
dbbase = xmalloc (dbsize);
dbroff = 0;
if ((lseek (desc, dbfoff, 0) != dbfoff) ||
/* Save the relocation factor where everybody can see it. */
- baseaddr = addr;
+ base_section_offsets = section_offsets;
+ baseaddr = ANOFFSET (section_offsets, 0);
/* Follow the compilation unit sibling chain, building a partial symbol
table entry for each one. Save enough information about each compilation
{
register struct context_stack *new;
- (void) push_context (0, dip -> at_low_pc);
+ push_context (0, dip -> at_low_pc);
process_dies (thisdie + dip -> die_length, enddie, objfile);
new = pop_context ();
if (local_symbols != NULL)
{
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;
}
char *tpart1;
struct dieinfo mbr;
char *nextdie;
+ int anonymous_size;
if ((type = lookup_utype (dip -> die_ref)) == NULL)
{
INIT_CPLUS_SPECIFIC(type);
switch (dip -> die_tag)
{
+ case TAG_class_type:
+ TYPE_CODE (type) = TYPE_CODE_CLASS;
+ tpart1 = "class";
+ break;
case TAG_structure_type:
TYPE_CODE (type) = TYPE_CODE_STRUCT;
tpart1 = "struct";
/* Should never happen */
TYPE_CODE (type) = TYPE_CODE_UNDEF;
tpart1 = "???";
- SQUAWK (("missing structure or union tag"));
+ SQUAWK (("missing class, structure, or union tag"));
break;
}
/* Some compilers try to be helpful by inventing "fake" names for
TYPE_NAME (type) = obconcat (&objfile -> type_obstack,
tpart1, " ", dip -> at_name);
}
- if (dip -> at_byte_size != 0)
- {
- TYPE_LENGTH (type) = dip -> at_byte_size;
- }
+ /* 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)
{
new -> next = list;
list = new;
/* Save the data. */
- list -> field.name = savestring (mbr.at_name, strlen (mbr.at_name));
+ list -> field.name =
+ obsavestring (mbr.at_name, strlen (mbr.at_name),
+ &objfile -> type_obstack);
list -> field.type = decode_die_type (&mbr);
list -> field.bitpos = 8 * locval (mbr.at_location);
- list -> field.bitsize = 0;
+ /* 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)
+ {
+ 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);
+ }
+ list -> field.bitpos +=
+ 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)
{
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);
+ }
}
}
}
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;
+ typep = alloc_type (current_objfile);
TYPE_CODE (typep) = TYPE_CODE_ARRAY;
TYPE_LENGTH (typep) = TYPE_LENGTH (nexttype);
- TYPE_LENGTH (typep) *= lowbound + highbound + 1;
+ TYPE_LENGTH (typep) *= (highbound - lowbound) + 1;
TYPE_TARGET_TYPE (typep) = nexttype;
}
}
{
if ((utype = lookup_utype (dip -> die_ref)) == NULL)
{
- (void) alloc_utype (dip -> die_ref, type);
+ alloc_utype (dip -> die_ref, type);
}
else
{
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
{
/* This is the first reference to one of these types. Make
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
{
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);
+ }
}
}
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));
+ memset (sym, 0, sizeof (struct symbol));
SYMBOL_NAME (sym) = create_name (list -> field.name,
&objfile->symbol_obstack);
SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE;
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
+ 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. */
list_in_scope = &file_symbols;
}
+
+/*
+
+LOCAL FUNCTION
+
+ 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. */
+
+ processing_gcc_compilation =
+ STREQN (producer, GPLUS_PRODUCER, strlen (GPLUS_PRODUCER))
+ || STREQN (producer, GCC_PRODUCER, strlen (GCC_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 1 /* Works, but is experimental. -fnf */
+ 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);
+ }
+ else if (STREQN (producer, CFRONT_PRODUCER, strlen (CFRONT_PRODUCER)))
+ {
+ set_demangling_style (CFRONT_DEMANGLING_STYLE_STRING);
+ }
+ }
+#endif
+}
+
+
/*
LOCAL FUNCTION
objfile -> ei.entry_file_lowpc = dip -> at_low_pc;
objfile -> ei.entry_file_highpc = dip -> at_high_pc;
}
+ 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);
+ memset (utypes, 0, numutypes * sizeof (struct type *));
+ start_symtab (dip -> at_name, dip -> at_comp_dir, dip -> at_low_pc);
decode_line_numbers (lnbase);
process_dies (thisdie + dip -> die_length, enddie, objfile);
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)
+ if (symtab != NULL)
{
- case LANG_C89:
- case LANG_C:
- symtab -> language = language_c;
- break;
- case LANG_C_PLUS_PLUS:
- symtab -> language = language_cplus;
- break;
- default:
- ;
- }
+ symtab -> language = cu_language;
+ }
do_cleanups (back_to);
utypes = NULL;
numutypes = 0;
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);
read_tag_pointer_type (&di);
break;
default:
- (void) new_symbol (&di, objfile);
+ new_symbol (&di, objfile);
break;
}
}
unit, seek to the location in the file, and read in all the DIE's. */
diecount = 0;
- dbbase = xmalloc (DBLENGTH(pst));
+ dbsize = DBLENGTH (pst);
+ dbbase = xmalloc (dbsize);
dbroff = DBROFF(pst);
foffset = DBFOFF(pst) + dbroff;
- baseaddr = pst -> addr;
+ base_section_offsets = pst->section_offsets;
+ baseaddr = ANOFFSET (pst->section_offsets, 0);
if (bfd_seek (abfd, foffset, 0) ||
- (bfd_read (dbbase, DBLENGTH(pst), 1, abfd) != DBLENGTH(pst)))
+ (bfd_read (dbbase, dbsize, 1, abfd) != dbsize))
{
free (dbbase);
error ("can't read DWARF data");
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);
struct partial_symtab *pst;
{
int i;
+ struct cleanup *old_chain;
if (pst != NULL)
{
}
if (DBLENGTH (pst)) /* Otherwise it's a dummy */
{
+ buildsym_init ();
+ old_chain = make_cleanup (really_free_pendings, 0);
pst -> symtab = read_ofile_symtab (pst);
if (info_verbose)
{
fflush (stdout);
}
sort_symtab_syms (pst -> symtab);
+ do_cleanups (old_chain);
}
pst -> readin = 1;
}
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
objfile -> static_psymbols,
0);
break;
+ case TAG_class_type:
case TAG_structure_type:
case TAG_union_type:
+ case TAG_enumeration_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)
+ if (cu_language == language_cplus)
{
+ /* For C++, these implicitly act as typedefs as well. */
ADD_PSYMBOL_TO_LIST (dip -> at_name, strlen (dip -> at_name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
+ VAR_NAMESPACE, LOC_TYPEDEF,
objfile -> static_psymbols,
0);
}
- add_enum_psymbol (dip, objfile);
break;
}
}
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
struct objfile *objfile;
{
char *nextdie;
+ char *temp;
struct dieinfo di;
while (thisdie < enddie)
{
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))
+ {
+ dwarfwarn ("reference to DIE (0x%x) outside compilation unit", 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;
}
}
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,
+ pst = start_psymtab_common (objfile, base_section_offsets,
+ di.at_name, di.at_low_pc,
objfile -> global_psymbols.next,
objfile -> static_psymbols.next);
{
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);
+ 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;
/* 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
+
+ synthesize_typedef -- make a symbol table entry for a "fake" typedef
+
+SYNOPSIS
+
+ static void synthesize_typedef (struct dieinfo *dip,
+ struct objfile *objfile,
+ struct type *type);
+
+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));
+ memset (sym, 0, sizeof (struct symbol));
+ SYMBOL_NAME (sym) = create_name (dip -> at_name,
+ &objfile->symbol_obstack);
+ 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_modified_type (unsigned char *modifiers,
+ static struct type *decode_modified_type (char *modifiers,
unsigned short modcount, int mtype)
DESCRIPTION
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)
SQUAWK (("type modifier 'volatile' ignored")); /* FIXME */
break;
default:
- if (!(MOD_lo_user <= modifier && modifier <= MOD_hi_user))
+ if (!(MOD_lo_user <= (unsigned char) modifier
+ && (unsigned char) modifier <= MOD_hi_user))
{
- SQUAWK (("unknown type modifier %u", modifier));
+ SQUAWK (("unknown type modifier %u",
+ (unsigned char) modifier));
}
break;
}
length = strlen (name) + 1;
newname = (char *) obstack_alloc (obstackp, length);
- (void) strcpy (newname, name);
+ strcpy (newname, name);
return (newname);
}
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));
+ 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)
+ if ((dip -> die_length < SIZEOF_DIE_LENGTH) ||
+ ((diep + dip -> die_length) > (dbbase + dbsize)))
{
dwarfwarn ("malformed DIE, bad length (%d bytes)", dip -> die_length);
+ dip -> die_length = 0;
}
else if (dip -> die_length < (SIZEOF_DIE_LENGTH + SIZEOF_DIE_TAG))
{
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);
- break;
case AT_sibling:
dip -> at_sibling = target_to_host (diep, nbytes, GET_UNSIGNED,
objfile);
case AT_byte_size:
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,
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);
- break;
case AT_location:
dip -> at_location = diep;
break;
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);
- break;
case AT_start_scope:
dip -> at_start_scope = target_to_host (diep, nbytes, GET_UNSIGNED,
objfile);
projects / deliverable / binutils-gdb.git / blobdiff