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* emultempl/hppaosf.em: Various fixes and support for linker stub

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generation.
	(hppaosf_finish, hppaosf_search_for_padding_statements,
	hppaosf_create_output_section_statements): New functions in
	support of linker stub generation.
	(ld_hppaosf_emulation):  Redefine to include new
	emulation-specific routines.
This commit is contained in:
Jeff Law 1993-11-02 23:54:04 +00:00
parent 97fbbaca20
commit 9d9d72fcf5
1 changed files with 171 additions and 1 deletions
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172
ld/emultempl/hppaosf.em
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@ -29,6 +29,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "config.h"
#include "ldemul.h"
#include "ldfile.h"
#include "ldlang.h"
#include "ldmisc.h"
extern boolean lang_float_flag;
@ -45,6 +46,173 @@ static void hppaosf_before_parse()
ldfile_output_architecture = bfd_arch_hppa;
}
static lang_input_statement_type *stub_file = 0;
static lang_input_section_type *stub_input_section = NULL;
extern lang_statement_list_type *stat_ptr;
/* List of statements needed to handle constructors */
extern lang_statement_list_type constructor_list;
static void
hppaosf_search_for_padding_statements(s,prev)
lang_statement_union_type *s;
lang_statement_union_type **prev;
{
lang_statement_union_type *sprev = NULL;
for (; s != (lang_statement_union_type *) NULL; s = s->next)
{
switch (s->header.type)
{
case lang_constructors_statement_enum:
hppaosf_search_for_padding_statements (constructor_list.head,&constructor_list.head);
break;
case lang_output_section_statement_enum:
hppaosf_search_for_padding_statements
(s->output_section_statement.children.head,&s->output_section_statement.children.head);
break;
case lang_wild_statement_enum:
hppaosf_search_for_padding_statements
(s->wild_statement.children.head,&s->wild_statement.children.head);
break;
case lang_data_statement_enum:
case lang_object_symbols_statement_enum:
case lang_output_statement_enum:
case lang_target_statement_enum:
case lang_input_section_enum:
case lang_input_statement_enum:
case lang_assignment_statement_enum:
case lang_address_statement_enum:
break;
case lang_padding_statement_enum:
if ( sprev )
{
sprev->header.next = s->header.next;
}
else
{
**prev = *s;
}
break;
default:
FAIL ();
break;
}
sprev = s;
}
}
static void
hppaosf_finish()
{
extern asymbol *hppa_look_for_stubs_in_section();
extern ld_config_type config;
if (config.relocateable_output == false)
{
/* check for needed stubs */
LANG_FOR_EACH_INPUT_SECTION
(statement, abfd, section,
(
{
int new_sym_cnt = 0;
int i,j;
asymbol *syms = hppa_look_for_stubs_in_section (stub_file->the_bfd,
abfd,
output_bfd,
section,
statement->asymbols,
&new_sym_cnt);
if ( (new_sym_cnt > 0) && syms )
{
struct symbol_cache_entry **old_asymbols = stub_file->asymbols;
stub_file->asymbols = ldmalloc((stub_file->symbol_count + new_sym_cnt) * sizeof(asymbol *));
for ( j = 0; j < stub_file->symbol_count; j++ )
stub_file->asymbols[j] = old_asymbols[j];
for ( j = 0, i = stub_file->symbol_count; j < new_sym_cnt; j++, i++ )
stub_file->asymbols[i] = &syms[j];
stub_file->symbol_count += new_sym_cnt;
/* Now, attach the contents of the new linker stub(s) */
/* to the linker stub input section. */
}
}
)
)
/* Add a statement to get the linker stubs included in the output */
lang_add_wild(".hppa_linker_stubs",NULL);
/* If we've added stubs,remove the padding_statements because */
/* they are no longer valid */
hppaosf_search_for_padding_statements(stat_ptr->head,&(stat_ptr->head));
}
}
static void
hppaosf_create_output_section_statements()
{
asection *stub_sec;
asection *output_text_sec = bfd_make_section_old_way(output_bfd,".text");
lang_input_section_type *new_input_sec;
stub_file = lang_add_input_file ("linker stubs",
lang_input_file_is_fake_enum,
(char *) NULL);
stub_file->the_bfd = bfd_create ("linker stubs", output_bfd);
stub_file->symbol_count = 0;
stub_file->the_bfd->sections = 0;
stub_sec = bfd_make_section_old_way(stub_file->the_bfd,".hppa_linker_stubs");
stub_sec->output_section = output_text_sec;
bfd_set_section_flags(stub_file->the_bfd, stub_sec, SEC_HAS_CONTENTS | SEC_ALLOC | SEC_CODE | SEC_RELOC );
/* The user data of a bfd points to the input statement attached */
stub_file->the_bfd->usrdata = (void *)stub_file;
stub_file->common_section =
bfd_make_section(stub_file->the_bfd,"COMMON");
new_input_sec = (lang_input_section_type *)stat_alloc(sizeof(lang_input_section_type));
if ( new_input_sec )
{
lang_output_section_statement_type *text_output_sec;
lang_statement_union_type *stmt;
lang_wild_statement_type *stub_statement;
new_input_sec->section = stub_sec;
new_input_sec->ifile = stub_file;
new_input_sec->header.type = lang_input_section_enum;
new_input_sec->header.next = NULL;
stub_input_section = new_input_sec;
/* Find the output_section_statement for .text, */
/* then find the wild_statement for .hppa_linker_stubs */
text_output_sec = lang_output_section_find(".text");
stmt = text_output_sec->children.head;
while (stmt && stmt->header.type != lang_wild_statement_enum)
{
stmt = stmt->header.next;
}
if ( stmt )
{
lang_wild_statement_type *wstmt = (lang_wild_statement_type *)stmt;
lang_list_init(&wstmt->children);
lang_statement_append(&wstmt->children,
(lang_statement_union_type *)new_input_sec,
&new_input_sec->header.next);
}
}
}
static void
hppaosf_set_output_arch()
{
@ -126,6 +294,8 @@ struct ld_emulation_xfer_struct ld_hppaosf_emulation =
before_allocation_default,
hppaosf_get_script,
"hppaosf",
"elf32-hppa"
"elf32-hppa",
hppaosf_finish,
hppaosf_create_output_section_statements
};
EOF