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authorDavid Edelsohn <dje.gcc@gmail.com>1996-05-07 17:58:43 +0000
committerDavid Edelsohn <dje.gcc@gmail.com>1996-05-07 17:58:43 +0000
commita1613b5f355de2143e5e2909637130f4d1d13e5a (patch)
tree32b5bb3f44bef77edd45df4f3721a8ade0ecec65 /ld/emultempl
parentd38d6b7a8546249f5e68e51553b34d7b64b3f7d1 (diff)
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* scripttempl/pe.em (gld${EMULATION_NAME}_place_orphan): New function.
(gld${EMULATION_NAME}_place_section): New function. (hold_{section,use,text,rdata,data}): New static locals. (ld_${EMULATION_NAME}_emulation): Update orphan field.
Diffstat (limited to 'ld/emultempl')
-rw-r--r--ld/emultempl/pe.em181
1 files changed, 171 insertions, 10 deletions
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em
index 40030a7..02dbd44 100644
--- a/ld/emultempl/pe.em
+++ b/ld/emultempl/pe.em
@@ -48,7 +48,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
static void gld_${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
};