/* This file is is generated by a shell script. DO NOT EDIT! */
/* Emulate the original gld for the given ${EMULATION_NAME}
- Copyright (C) 2014-2020 Free Software Foundation, Inc.
+ Copyright (C) 2014-2021 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
Extended for the MSP430 by Nick Clifton nickc@redhat.com
char * lower_name;
char * upper_name;
char * name;
- char * buf = NULL;
lang_output_section_statement_type * lower;
lang_output_section_statement_type * upper;
only use the part of the name before the second dot. */
if (strchr (secname + 1, '.') != NULL)
{
- buf = name = xstrdup (secname);
+ name = xstrdup (secname);
* strchr (name + 1, '.') = 0;
}
end:
free (upper_name);
free (lower_name);
- if (buf)
- free (buf);
return lower;
}
EOF
fragment <<EOF
static bfd_boolean
-change_output_section (lang_statement_union_type ** head,
+change_output_section (lang_statement_union_type **head,
asection *s,
- lang_output_section_statement_type * new_output_section)
+ lang_output_section_statement_type *new_os,
+ lang_output_section_statement_type *old_os)
{
asection *is;
lang_statement_union_type * prev = NULL;
is = curr->input_section.section;
if (is == s)
{
+ lang_statement_list_type *old_list
+ = (lang_statement_list_type *) &old_os->children;
s->output_section = NULL;
- lang_add_section (& (new_output_section->children), s, NULL,
- new_output_section);
+ lang_add_section (&new_os->children, s, NULL, new_os);
+
/* Remove the section from the old output section. */
if (prev == NULL)
*head = curr->header.next;
else
prev->header.next = curr->header.next;
+ /* If the input section we just moved is the tail of the old
+ output section, then we also need to adjust that tail. */
+ if (old_list->tail == (lang_statement_union_type **) curr)
+ old_list->tail = (lang_statement_union_type **) prev;
+
return TRUE;
}
break;
case lang_wild_statement_enum:
if (change_output_section (&(curr->wild_statement.children.head),
- s, new_output_section))
+ s, new_os, old_os))
return TRUE;
break;
default:
upper_size = &upper_size_ram;
}
- /* Move sections in the upper region that would fit in the lower
- region to the lower region. */
- if (*lower_size + s->size < lower->region->length)
+ /* If the upper region is overflowing, try moving sections to the lower
+ region.
+ Note that there isn't any general benefit to using lower memory over upper
+ memory, so we only move sections around with the goal of making the program
+ fit. */
+ if (*upper_size > upper->region->length
+ && *lower_size + s->size < lower->region->length)
{
- if (change_output_section (&(upper->children.head), s, lower))
+ if (change_output_section (&(upper->children.head), s, lower, upper))
{
*upper_size -= s->size;
*lower_size += s->size;
}
/* Move sections that cause the lower region to overflow to the upper region. */
if (*lower_size + s->size > output_sec->region->length)
- change_output_section (&(output_sec->children.head), s, upper);
+ change_output_section (&(output_sec->children.head), s, upper, output_sec);
else
*lower_size += s->size;
end:
gld${EMULATION_NAME}_after_allocation ();
}
+/* Return TRUE if a non-debug input section in L has positive size and matches
+ the given name. */
+static int
+input_section_exists (lang_statement_union_type * l, const char * name)
+{
+ while (l != NULL)
+ {
+ switch (l->header.type)
+ {
+ case lang_input_section_enum:
+ if ((l->input_section.section->flags & SEC_ALLOC)
+ && l->input_section.section->size > 0
+ && !strcmp (l->input_section.section->name, name))
+ return TRUE;
+ break;
+
+ case lang_wild_statement_enum:
+ if (input_section_exists (l->wild_statement.children.head, name))
+ return TRUE;
+ break;
+
+ default:
+ break;
+ }
+ l = l->header.next;
+ }
+ return FALSE;
+}
+
+/* Some MSP430 linker scripts do not include ALIGN directives to ensure
+ __preinit_array_start, __init_array_start or __fini_array_start are word
+ aligned.
+ If __*_array_start symbols are not word aligned, the code in crt0 to run
+ through the array and call the functions will crash.
+ To avoid warning unnecessarily when the .*_array sections are not being
+ used for running constructors/destructors, only emit the warning if
+ the associated section exists and has size. */
+static void
+check_array_section_alignment (void)
+{
+ int i;
+ lang_output_section_statement_type * rodata_sec;
+ lang_output_section_statement_type * rodata2_sec;
+ const char * array_names[3][2] = { { ".init_array", "__init_array_start" },
+ { ".preinit_array", "__preinit_array_start" },
+ { ".fini_array", "__fini_array_start" } };
+
+ /* .{preinit,init,fini}_array could be in either .rodata or .rodata2. */
+ rodata_sec = lang_output_section_find (".rodata");
+ rodata2_sec = lang_output_section_find (".rodata2");
+ if (rodata_sec == NULL && rodata2_sec == NULL)
+ return;
+
+ /* There are 3 .*_array sections which must be checked for alignment. */
+ for (i = 0; i < 3; i++)
+ {
+ struct bfd_link_hash_entry * sym;
+ if (((rodata_sec && input_section_exists (rodata_sec->children.head,
+ array_names[i][0]))
+ || (rodata2_sec && input_section_exists (rodata2_sec->children.head,
+ array_names[i][0])))
+ && (sym = bfd_link_hash_lookup (link_info.hash, array_names[i][1],
+ FALSE, FALSE, TRUE))
+ && sym->type == bfd_link_hash_defined
+ && sym->u.def.value % 2)
+ {
+ einfo ("%P: warning: \"%s\" symbol (%pU) is not word aligned\n",
+ array_names[i][1], NULL);
+ }
+ }
+}
+
+static void
+gld${EMULATION_NAME}_finish (void)
+{
+ finish_default ();
+ check_array_section_alignment ();
+}
+
struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
{
${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
${LDEMUL_AFTER_PARSE-after_parse_default},
msp430_elf_after_open,
after_check_relocs_default,
+ before_place_orphans_default,
msp430_elf_after_allocation,
${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
"${EMULATION_NAME}",
"${OUTPUT_FORMAT}",
- ${LDEMUL_FINISH-finish_default},
+ gld${EMULATION_NAME}_finish,
${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
${LDEMUL_OPEN_DYNAMIC_ARCHIVE-NULL},
${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
${LDEMUL_NEW_VERS_PATTERN-NULL},
${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL},
${LDEMUL_EMIT_CTF_EARLY-NULL},
- ${LDEMUL_EXAMINE_STRTAB_FOR_CTF-NULL}
+ ${LDEMUL_ACQUIRE_STRINGS_FOR_CTF-NULL},
+ ${LDEMUL_NEW_DYNSYM_FOR_CTF-NULL},
+ ${LDEMUL_PRINT_SYMBOL-NULL}
};
EOF
# \f
projects / binutils-gdb.git / blobdiff