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gcc: Add ability to generate DWARF pubtypes section if

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DEBUG_PUBTYPES_SECTION is defined.

Obtained from:	gcc 4.3 (rev. 118826; GPLv2)

MFC after:	2 weeks
This commit is contained in:
Pedro F. Giffuni 2013-12-24 20:42:48 +00:00
parent 6c5a340e56
commit 29c20022de
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=259841
4 changed files with 153 additions and 51 deletions
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31
contrib/gcc/ChangeLog.gcc43
View File

@ -550,6 +550,37 @@
(override_options): Add entries for Core2.
(ix86_issue_rate): Add case for Core2.
2006-11-14 Caroline Tice <ctice@apple.com> (r118826)
* dwarf2out.c (debug_pubtypes_section): New static global variable.
(pubname_entry): Add DEF_VEC_O and DEF_VEC_ALLOC_O statements for
this type.
(pubname_table): Redefine as a vector.
(pubtype_table): New static global variable, defined as a vector.
(pubname_table_allocated): Remove static global variable.
(pubname_table_in_use): Remove static global variable.
(PUBNAME_TABLE_INCREMENT): Remove constant.
(size_of_pubnames): Add parameter to deal with either pubnames or
pubtypes, and change code to deal with table being a vector.
(add_pubname): Change to deal with table being a vector.
(add_pubtype): New function.
(output_pubnames): Add parameter to deal with either pubnames or
pubtypes, and change code to deal with table being a vector.
(gen_array_type_die): Add call to add_pubtype.
(gen_enumeration_type_die): Add call to add_pubtype.
(gen_struct_or_union_type_die): Add call to add_pubtype.
(gen_subroutine_type_die): Add call to add_pubtype.
(gen_typedef_die): Add call to add_pubtype.
(dwarf2out_init): Add code to initialize pubname_table and
pubtype_table vectors; also initialize debug_pubtypes_section.
(prune_unused_types): Change to deal with pubnames being a vector.
(dwarf2out_finish): Change to deal with pubnames being a vector; add
pubnames table to call to output_pubnames; Add code to output pubtypes
table if DEBUG_PUBTYPES_SECTION is defined.
* config/darwin.c (darwin_file_start): Add DEBUG_PUBTYPES_SECTION to
debugnames.
* config/darwin.h (DEBUG_PUBTYPES_SECTION): Define new global variable.
2006-11-07 Eric Christopher <echristo@apple.com> (r118576)
* libgcc2.c (__bswapdi2): Rename from bswapDI2.

1
contrib/gcc/config/darwin.c
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@ -1517,6 +1517,7 @@ darwin_file_start (void)
DEBUG_LINE_SECTION,
DEBUG_LOC_SECTION,
DEBUG_PUBNAMES_SECTION,
DEBUG_PUBTYPES_SECTION,
DEBUG_STR_SECTION,
DEBUG_RANGES_SECTION
};

1
contrib/gcc/config/darwin.h
View File

@ -401,6 +401,7 @@ extern GTY(()) int darwin_ms_struct;
#define DEBUG_LINE_SECTION "__DWARF,__debug_line,regular,debug"
#define DEBUG_LOC_SECTION "__DWARF,__debug_loc,regular,debug"
#define DEBUG_PUBNAMES_SECTION "__DWARF,__debug_pubnames,regular,debug"
#define DEBUG_PUBTYPES_SECTION "__DWARF,__debug_pubtypes,regular,debug"
#define DEBUG_STR_SECTION "__DWARF,__debug_str,regular,debug"
#define DEBUG_RANGES_SECTION "__DWARF,__debug_ranges,regular,debug"

171
contrib/gcc/dwarf2out.c
View File

@ -156,6 +156,7 @@ static GTY(()) section *debug_macinfo_section;
static GTY(()) section *debug_line_section;
static GTY(()) section *debug_loc_section;
static GTY(()) section *debug_pubnames_section;
static GTY(()) section *debug_pubtypes_section;
static GTY(()) section *debug_str_section;
static GTY(()) section *debug_ranges_section;
static GTY(()) section *debug_frame_section;
@ -3759,6 +3760,9 @@ typedef struct pubname_struct GTY(())
}
pubname_entry;
DEF_VEC_O(pubname_entry);
DEF_VEC_ALLOC_O(pubname_entry, gc);
struct dw_ranges_struct GTY(())
{
int block_num;
@ -3940,17 +3944,11 @@ static GTY(()) unsigned separate_line_info_table_in_use;
/* A pointer to the base of a table that contains a list of publicly
accessible names. */
static GTY ((length ("pubname_table_allocated"))) pubname_ref pubname_table;
static GTY (()) VEC (pubname_entry, gc) * pubname_table;
/* Number of elements currently allocated for pubname_table. */
static GTY(()) unsigned pubname_table_allocated;
/* Number of elements in pubname_table currently in use. */
static GTY(()) unsigned pubname_table_in_use;
/* Size (in elements) of increments by which we may expand the
pubname_table. */
#define PUBNAME_TABLE_INCREMENT 64
/* A pointer to the base of a table that contains a list of publicly
accessible types. */
static GTY (()) VEC (pubname_entry, gc) * pubtype_table;
/* Array of dies for which we should generate .debug_arange info. */
static GTY((length ("arange_table_allocated"))) dw_die_ref *arange_table;
@ -4115,7 +4113,7 @@ static void calc_die_sizes (dw_die_ref);
static void mark_dies (dw_die_ref);
static void unmark_dies (dw_die_ref);
static void unmark_all_dies (dw_die_ref);
static unsigned long size_of_pubnames (void);
static unsigned long size_of_pubnames (VEC (pubname_entry,gc) *);
static unsigned long size_of_aranges (void);
static enum dwarf_form value_format (dw_attr_ref);
static void output_value_format (dw_attr_ref);
@ -4126,7 +4124,8 @@ static void output_compilation_unit_header (void);
static void output_comp_unit (dw_die_ref, int);
static const char *dwarf2_name (tree, int);
static void add_pubname (tree, dw_die_ref);
static void output_pubnames (void);
static void add_pubtype (tree, dw_die_ref);
static void output_pubnames (VEC (pubname_entry,gc) *);
static void add_arange (tree, dw_die_ref);
static void output_aranges (void);
static unsigned int add_ranges (tree);
@ -6750,21 +6749,22 @@ unmark_all_dies (dw_die_ref die)
unmark_all_dies (AT_ref (a));
}
/* Return the size of the .debug_pubnames table generated for the
compilation unit. */
/* Return the size of the .debug_pubnames or .debug_pubtypes table
generated for the compilation unit. */
static unsigned long
size_of_pubnames (void)
size_of_pubnames (VEC (pubname_entry, gc) * names)
{
unsigned long size;
unsigned i;
pubname_ref p;
size = DWARF_PUBNAMES_HEADER_SIZE;
for (i = 0; i < pubname_table_in_use; i++)
{
pubname_ref p = &pubname_table[i];
size += DWARF_OFFSET_SIZE + strlen (p->name) + 1;
}
for (i = 0; VEC_iterate (pubname_entry, names, i, p); i++)
if (names != pubtype_table
|| p->die->die_offset != 0
|| !flag_eliminate_unused_debug_types)
size += strlen (p->name) + DWARF_OFFSET_SIZE + 1;
size += DWARF_OFFSET_SIZE;
return size;
@ -7332,41 +7332,73 @@ dwarf2_name (tree decl, int scope)
static void
add_pubname (tree decl, dw_die_ref die)
{
pubname_ref p;
pubname_entry e;
if (! TREE_PUBLIC (decl))
return;
if (pubname_table_in_use == pubname_table_allocated)
{
pubname_table_allocated += PUBNAME_TABLE_INCREMENT;
pubname_table
= ggc_realloc (pubname_table,
(pubname_table_allocated * sizeof (pubname_entry)));
memset (pubname_table + pubname_table_in_use, 0,
PUBNAME_TABLE_INCREMENT * sizeof (pubname_entry));
}
e.die = die;
e.name = xstrdup (dwarf2_name (decl, 1));
VEC_safe_push (pubname_entry, gc, pubname_table, &e);
}
p = &pubname_table[pubname_table_in_use++];
p->die = die;
p->name = xstrdup (dwarf2_name (decl, 1));
/* Add a new entry to .debug_pubtypes if appropriate. */
static void
add_pubtype (tree decl, dw_die_ref die)
{
pubname_entry e;
e.name = NULL;
if ((TREE_PUBLIC (decl)
|| die->die_parent == comp_unit_die)
&& (die->die_tag == DW_TAG_typedef || COMPLETE_TYPE_P (decl)))
{
e.die = die;
if (TYPE_P (decl))
{
if (TYPE_NAME (decl))
{
if (TREE_CODE (TYPE_NAME (decl)) == IDENTIFIER_NODE)
e.name = xstrdup ((const char *) IDENTIFIER_POINTER
(TYPE_NAME (decl)));
else if (TREE_CODE (TYPE_NAME (decl)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (decl)))
e.name = xstrdup ((const char *) IDENTIFIER_POINTER
(DECL_NAME (TYPE_NAME (decl))));
else
e.name = xstrdup ((const char *) get_AT_string (die, DW_AT_name));
}
}
else
e.name = xstrdup (dwarf2_name (decl, 1));
/* If we don't have a name for the type, there's no point in adding
it to the table. */
if (e.name && e.name[0] != '\0')
VEC_safe_push (pubname_entry, gc, pubtype_table, &e);
}
}
/* Output the public names table used to speed up access to externally
visible names. For now, only generate entries for externally
visible procedures. */
visible names; or the public types table used to find type definitions. */
static void
output_pubnames (void)
output_pubnames (VEC (pubname_entry, gc) * names)
{
unsigned i;
unsigned long pubnames_length = size_of_pubnames ();
unsigned long pubnames_length = size_of_pubnames (names);
pubname_ref pub;
if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4)
dw2_asm_output_data (4, 0xffffffff,
"Initial length escape value indicating 64-bit DWARF extension");
dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length,
"Length of Public Names Info");
if (names == pubname_table)
dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length,
"Length of Public Names Info");
else
dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length,
"Length of Public Type Names Info");
dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version");
dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label,
debug_info_section,
@ -7374,17 +7406,21 @@ output_pubnames (void)
dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset,
"Compilation Unit Length");
for (i = 0; i < pubname_table_in_use; i++)
for (i = 0; VEC_iterate (pubname_entry, names, i, pub); i++)
{
pubname_ref pub = &pubname_table[i];
/* We shouldn't see pubnames for DIEs outside of the main CU. */
if (names == pubname_table)
gcc_assert (pub->die->die_mark);
/* We shouldn't see pubnames for DIEs outside of the main CU. */
gcc_assert (pub->die->die_mark);
if (names != pubtype_table
|| pub->die->die_offset != 0
|| !flag_eliminate_unused_debug_types)
{
dw2_asm_output_data (DWARF_OFFSET_SIZE, pub->die->die_offset,
"DIE offset");
dw2_asm_output_data (DWARF_OFFSET_SIZE, pub->die->die_offset,
"DIE offset");
dw2_asm_output_nstring (pub->name, -1, "external name");
dw2_asm_output_nstring (pub->name, -1, "external name");
}
}
dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, NULL);
@ -11298,6 +11334,9 @@ gen_array_type_die (tree type, dw_die_ref context_die)
#endif
add_type_attribute (array_die, element_type, 0, 0, context_die);
if (get_AT (array_die, DW_AT_name))
add_pubtype (type, array_die);
}
#if 0
@ -11433,6 +11472,9 @@ gen_enumeration_type_die (tree type, dw_die_ref context_die)
else
add_AT_flag (type_die, DW_AT_declaration, 1);
if (get_AT (type_die, DW_AT_name))
add_pubtype (type, type_die);
return type_die;
}
@ -12553,6 +12595,9 @@ gen_struct_or_union_type_die (tree type, dw_die_ref context_die,
&& ! decl_function_context (TYPE_STUB_DECL (type)))
VEC_safe_push (tree, gc, incomplete_types, type);
}
if (get_AT (type_die, DW_AT_name))
add_pubtype (type, type_die);
}
/* Generate a DIE for a subroutine _type_. */
@ -12569,6 +12614,9 @@ gen_subroutine_type_die (tree type, dw_die_ref context_die)
add_prototyped_attribute (subr_die, type);
add_type_attribute (subr_die, return_type, 0, 0, context_die);
gen_formal_types_die (type, subr_die);
if (get_AT (subr_die, DW_AT_name))
add_pubtype (type, subr_die);
}
/* Generate a DIE for a type definition. */
@ -12608,6 +12656,9 @@ gen_typedef_die (tree decl, dw_die_ref context_die)
if (DECL_ABSTRACT (decl))
equate_decl_number_to_die (decl, type_die);
if (get_AT (type_die, DW_AT_name))
add_pubtype (decl, type_die);
}
/* Generate a type description DIE. */
@ -13932,6 +13983,10 @@ dwarf2out_init (const char *filename ATTRIBUTE_UNUSED)
/* Zero-th entry is allocated, but unused. */
line_info_table_in_use = 1;
/* Allocate the pubtypes and pubnames vectors. */
pubname_table = VEC_alloc (pubname_entry, gc, 32);
pubtype_table = VEC_alloc (pubname_entry, gc, 32);
/* Generate the initial DIE for the .debug section. Note that the (string)
value given in the DW_AT_name attribute of the DW_TAG_compile_unit DIE
will (typically) be a relative pathname and that this pathname should be
@ -13958,6 +14013,10 @@ dwarf2out_init (const char *filename ATTRIBUTE_UNUSED)
SECTION_DEBUG, NULL);
debug_pubnames_section = get_section (DEBUG_PUBNAMES_SECTION,
SECTION_DEBUG, NULL);
#ifdef DEBUG_PUBTYPES_SECTION
debug_pubtypes_section = get_section (DEBUG_PUBTYPES_SECTION,
SECTION_DEBUG, NULL);
#endif
debug_str_section = get_section (DEBUG_STR_SECTION,
DEBUG_STR_SECTION_FLAGS, NULL);
debug_ranges_section = get_section (DEBUG_RANGES_SECTION,
@ -14240,6 +14299,7 @@ prune_unused_types (void)
{
unsigned int i;
limbo_die_node *node;
pubname_ref pub;
#if ENABLE_ASSERT_CHECKING
/* All the marks should already be clear. */
@ -14255,8 +14315,8 @@ prune_unused_types (void)
/* Also set the mark on nodes referenced from the
pubname_table or arange_table. */
for (i = 0; i < pubname_table_in_use; i++)
prune_unused_types_mark (pubname_table[i].die, 1);
for (i = 0; VEC_iterate (pubname_entry, pubname_table, i, pub); i++)
prune_unused_types_mark (pub->die, 1);
for (i = 0; i < arange_table_in_use; i++)
prune_unused_types_mark (arange_table[i], 1);
@ -14437,12 +14497,21 @@ dwarf2out_finish (const char *filename)
output_abbrev_section ();
/* Output public names table if necessary. */
if (pubname_table_in_use)
if (!VEC_empty (pubname_entry, pubname_table))
{
switch_to_section (debug_pubnames_section);
output_pubnames ();
output_pubnames (pubname_table);
}
#ifdef DEBUG_PUBTYPES_SECTION
/* Output public types table if necessary. */
if (!VEC_empty (pubname_entry, pubtype_table))
{
switch_to_section (debug_pubtypes_section);
output_pubnames (pubtype_table);
}
#endif
/* Output the address range information. We only put functions in the arange
table, so don't write it out if we don't have any. */
if (fde_table_in_use)