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2004-01-22 David Carlton <carlton@kealia.com>

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* dwarf2read.c (psymtab_to_symtab_1): Calculate lowpc, highpc via
	get_scope_pc_bounds.
	(read_file_scope): Ditto.
	(get_scope_pc_bounds): New function, produced by extracting code
	from the above two functions, consolidating it, and adding support
	for DW_TAG_namespace.
This commit is contained in:
David Carlton 2004-01-22 19:56:54 +00:00
parent 37254c9a9e
commit fae299cdd3
2 changed files with 80 additions and 44 deletions
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9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2004-01-22 David Carlton <carlton@kealia.com>
* dwarf2read.c (psymtab_to_symtab_1): Calculate lowpc, highpc via
get_scope_pc_bounds.
(read_file_scope): Ditto.
(get_scope_pc_bounds): New function, produced by extracting code
from the above two functions, consolidating it, and adding support
for DW_TAG_namespace.
2004-01-22 Mark Kettenis <kettenis@gnu.org>
* osabi.c (MAX_NOTESZ): New define.

115
gdb/dwarf2read.c
View File

@ -793,6 +793,10 @@ static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *);
static int dwarf2_get_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *);
static void get_scope_pc_bounds (struct die_info *,
CORE_ADDR *, CORE_ADDR *,
struct dwarf2_cu *);
static void dwarf2_add_field (struct field_info *, struct die_info *,
struct dwarf2_cu *);
@ -1874,30 +1878,11 @@ psymtab_to_symtab_1 (struct partial_symtab *pst)
/* Do line number decoding in read_file_scope () */
process_die (dies, &cu);
if (!dwarf2_get_pc_bounds (dies, &lowpc, &highpc, &cu))
{
/* Some compilers don't define a DW_AT_high_pc attribute for
the compilation unit. If the DW_AT_high_pc is missing,
synthesize it, by scanning the DIE's below the compilation unit. */
highpc = 0;
if (dies->child != NULL)
{
child_die = dies->child;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_subprogram)
{
CORE_ADDR low, high;
/* Some compilers don't define a DW_AT_high_pc attribute for the
compilation unit. If the DW_AT_high_pc is missing, synthesize
it, by scanning the DIE's below the compilation unit. */
get_scope_pc_bounds (dies, &lowpc, &highpc, &cu);
if (dwarf2_get_pc_bounds (child_die, &low, &high, &cu))
{
highpc = max (highpc, high);
}
}
child_die = sibling_die (child_die);
}
}
}
symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile));
/* Set symtab language to language from DW_AT_language.
@ -2029,27 +2014,7 @@ read_file_scope (struct die_info *die, struct dwarf2_cu *cu)
bfd *abfd = objfile->obfd;
struct line_header *line_header = 0;
if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu))
{
if (die->child != NULL)
{
child_die = die->child;
while (child_die && child_die->tag)
{
if (child_die->tag == DW_TAG_subprogram)
{
CORE_ADDR low, high;
if (dwarf2_get_pc_bounds (child_die, &low, &high, cu))
{
lowpc = min (lowpc, low);
highpc = max (highpc, high);
}
}
child_die = sibling_die (child_die);
}
}
}
get_scope_pc_bounds (die, &lowpc, &highpc, cu);
/* If we didn't find a lowpc, set it to highpc to avoid complaints
from finish_block. */
@ -2440,6 +2405,68 @@ dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc,
return ret;
}
/* Get the low and high pc's represented by the scope DIE, and store
them in *LOWPC and *HIGHPC. If the correct values can't be
determined, set *LOWPC to -1 and *HIGHPC to 0. */
static void
get_scope_pc_bounds (struct die_info *die,
CORE_ADDR *lowpc, CORE_ADDR *highpc,
struct dwarf2_cu *cu)
{
CORE_ADDR best_low = (CORE_ADDR) -1;
CORE_ADDR best_high = (CORE_ADDR) 0;
CORE_ADDR current_low, current_high;
if (dwarf2_get_pc_bounds (die, &current_low, &current_high, cu))
{
best_low = current_low;
best_high = current_high;
}
else
{
struct die_info *child = die->child;
while (child && child->tag)
{
switch (child->tag) {
case DW_TAG_subprogram:
if (dwarf2_get_pc_bounds (child, &current_low, &current_high, cu))
{
best_low = min (best_low, current_low);
best_high = max (best_high, current_high);
}
break;
case DW_TAG_namespace:
/* FIXME: carlton/2004-01-16: Should we do this for
DW_TAG_class_type/DW_TAG_structure_type, too? I think
that current GCC's always emit the DIEs corresponding
to definitions of methods of classes as children of a
DW_TAG_compile_unit or DW_TAG_namespace (as opposed to
the DIEs giving the declarations, which could be
anywhere). But I don't see any reason why the
standards says that they have to be there. */
get_scope_pc_bounds (child, &current_low, &current_high, cu);
if (current_low != ((CORE_ADDR) -1))
{
best_low = min (best_low, current_low);
best_high = max (best_high, current_high);
}
break;
default:
/* Ignore. */
break;
}
child = sibling_die (child);
}
}
*lowpc = best_low;
*highpc = best_high;
}
/* Add an aggregate field to the field list. */
static void