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* scripttempl/pe.em (gld${EMULATION_NAME}_place_orphan): New function.

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(gld${EMULATION_NAME}_place_section): New function.
	(hold_{section,use,text,rdata,data}): New static locals.
	(ld_${EMULATION_NAME}_emulation): Update orphan field.
This commit is contained in:
David Edelsohn 1996-05-07 17:58:43 +00:00
parent d38d6b7a85
commit a1613b5f35
1 changed files with 171 additions and 10 deletions
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181
ld/emultempl/pe.em
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@ -48,7 +48,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
static void gld_${EMULATION_NAME}_before_parse PARAMS ((void));
static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *isfile));
static boolean gld${EMULATION_NAME}_place_orphan
PARAMS ((lang_input_statement_type *, asection *));
static void gld${EMULATION_NAME}_place_section
PARAMS ((lang_statement_union_type *));
static struct internal_extra_pe_aouthdr pe;
static int dll;
@ -76,7 +79,7 @@ gld_${EMULATION_NAME}_before_parse()
#define OPTION_SUBSYSTEM (OPTION_STACK + 1)
#define OPTION_HEAP (OPTION_SUBSYSTEM + 1)
static struct option longopts[] = {
static struct option longopts[] = {
/* PE options */
{"base-file", required_argument, NULL, OPTION_BASE_FILE},
{"dll", no_argument, NULL, OPTION_DLL},
@ -99,8 +102,6 @@ gld_${EMULATION_NAME}_before_parse()
/* PE/WIN32; added routines to get the subsystem type, heap and/or stack
parameters which may be input from the command line */
typedef struct {
void *ptr;
int size;
@ -266,10 +267,10 @@ gld_${EMULATION_NAME}_parse_args(argc, argv)
/* PE options */
case OPTION_HEAP:
set_pe_stack_heap ("__heap_reserve__", "__heap_commit__");
set_pe_stack_heap ("__size_of_heap_reserve__", "__size_of_heap_commit__");
break;
case OPTION_STACK:
set_pe_stack_heap ("__stack_reserve__", "__stack_commit__");
set_pe_stack_heap ("__size_of_stack_reserve__", "__size_of_stack_commit__");
break;
case OPTION_SUBSYSTEM:
set_pe_subsystem ();
@ -361,7 +362,7 @@ gld_${EMULATION_NAME}_after_open()
pe_data(output_bfd)->dll = init[DLLOFF].value;
}
/* Callback function for qsort in sort_sections. */
static int sfunc (a, b)
@ -375,7 +376,7 @@ void *b;
}
/* Sort the input sections of archives into filename order. */
static void
sort_sections (s)
lang_statement_union_type *s;
@ -463,7 +464,168 @@ gld_${EMULATION_NAME}_before_allocation()
sort_sections (*stat_ptr);
}
/* Place an orphan section. We use this to put random sections
(e.g. those used to implement linkonce support) into the right place. */
/* These are used to communicate information from
gld${EMULATION_NAME}_place_section to gld${EMULATION_NAME}_place_orphan. */
static asection *hold_section;
static lang_output_section_statement_type *hold_use;
static lang_output_section_statement_type *hold_text;
static lang_output_section_statement_type *hold_rdata;
static lang_output_section_statement_type *hold_data;
/*ARGSUSED*/
static boolean
gld${EMULATION_NAME}_place_orphan (file, s)
lang_input_statement_type *file;
asection *s;
{
lang_output_section_statement_type *place;
asection *snew, **pps;
lang_statement_list_type *old;
lang_statement_list_type add;
etree_type *address;
const char *secname, *ps;
lang_output_section_statement_type *os;
if ((s->flags & SEC_ALLOC) == 0)
return false;
/* Look through the script to see where to place this section. */
hold_section = s;
hold_use = NULL;
lang_for_each_statement (gld${EMULATION_NAME}_place_section);
if (hold_use != NULL)
{
/* We have already placed a section with this name. */
wild_doit (&hold_use->children, s, hold_use, file);
return true;
}
secname = bfd_get_section_name (s->owner, s);
/* Decide which output section the section should go in.
This is here to help implement "one-only" support. Such functions and
variables are prefixed with .text., .rdata., or .data. We must keep all
all functions together but the linker doesn't support wildcard section
names. */
place = NULL;
if (strncmp (secname, ".text.", 6) == 0
&& hold_text != NULL)
place = hold_text;
else if (strncmp (secname, ".rdata.", 7) == 0
&& hold_rdata != NULL)
place = hold_rdata;
else if (strncmp (secname, ".data.", 6) == 0
&& hold_data != NULL)
place = hold_data;
if (place == NULL)
return false;
/* Create the section in the output file, and put it in the right
place. This shuffling is to make the output file look neater. */
snew = bfd_make_section (output_bfd, secname);
if (snew == NULL)
einfo ("%P%F: output format %s cannot represent section called %s\n",
output_bfd->xvec->name, secname);
if (place->bfd_section != NULL)
{
for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
;
*pps = snew->next;
snew->next = place->bfd_section->next;
place->bfd_section->next = snew;
}
/* Start building a list of statements for this section. */
old = stat_ptr;
stat_ptr = &add;
lang_list_init (stat_ptr);
#if 0 /* ??? elf32.em does this, do we need to? */
/* If the name of the section is representable in C, then create
symbols to mark the start and the end of the section. */
for (ps = secname; *ps != '\0'; ps++)
if (! isalnum (*ps) && *ps != '_')
break;
if (*ps == '\0' && config.build_constructors)
{
char *symname;
symname = (char *) xmalloc (ps - secname + sizeof "__start_");
sprintf (symname, "__start_%s", secname);
lang_add_assignment (exp_assop ('=', symname,
exp_nameop (NAME, ".")));
}
#endif
if (! link_info.relocateable)
address = NULL;
else
address = exp_intop ((bfd_vma) 0);
lang_enter_output_section_statement (secname, address, 0,
(bfd_vma) 0,
(etree_type *) NULL,
(etree_type *) NULL,
(etree_type *) NULL);
os = lang_output_section_statement_lookup (secname);
wild_doit (&os->children, s, os, file);
lang_leave_output_section_statement ((bfd_vma) 0, "*default*");
stat_ptr = &add;
#if 0 /* ??? elf32.em does this, do we need to? */
if (*ps == '\0' && config.build_constructors)
{
char *symname;
symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
sprintf (symname, "__stop_%s", secname);
lang_add_assignment (exp_assop ('=', symname,
exp_nameop (NAME, ".")));
}
#endif
/* Now stick the new statement list right after PLACE. */
*add.tail = place->header.next;
place->header.next = add.head;
stat_ptr = old;
return true;
}
/* Subroutine of gld${EMULATION_NAME}_place_orphan, passed as argument to
lang_for_each_statement to see if S has already been output, and to scan
for .text,.rdata,.data. */
static void
gld${EMULATION_NAME}_place_section (s)
lang_statement_union_type *s;
{
lang_output_section_statement_type *os;
if (s->header.type != lang_output_section_statement_enum)
return;
os = &s->output_section_statement;
if (strcmp (os->name, hold_section->name) == 0)
hold_use = os;
if (strcmp (os->name, ".text") == 0)
hold_text = os;
else if (strcmp (os->name, ".rdata") == 0)
hold_rdata = os;
else if (strcmp (os->name, ".data") == 0)
hold_data = os;
}
static char *
gld_${EMULATION_NAME}_get_script(isfile)
int *isfile;
@ -493,7 +655,6 @@ echo '; }' >> e${EMULATION_NAME}
cat >>e${EMULATION_NAME}.c <<EOF
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
gld_${EMULATION_NAME}_before_parse,
@ -511,7 +672,7 @@ struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
NULL, /* finish */
NULL, /* create output section statements */
NULL, /* open dynamic archive */
NULL, /* place orphan */
gld${EMULATION_NAME}_place_orphan,
gld_${EMULATION_NAME}_set_symbols,
gld_${EMULATION_NAME}_parse_args
};