# This shell script emits a C file. -*- C -*-
-# Copyright 2003, 2004
-# Free Software Foundation, Inc.
+# Copyright (C) 2003-2022 Free Software Foundation, Inc.
#
-# This file is part of GLD, the Gnu Linker.
+# This file is part of the GNU Binutils.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
#
-# This file is sourced from elf32.em, and defines extra xtensa-elf
+# This file is sourced from elf.em, and defines extra xtensa-elf
# specific routines.
#
-cat >>e${EMULATION_NAME}.c <<EOF
+fragment <<EOF
#include <xtensa-config.h>
+#include "../bfd/elf-bfd.h"
+#include "elf/xtensa.h"
+#include "bfd.h"
+
+/* Provide default values for new configuration settings. */
+#ifndef XTHAL_ABI_UNDEFINED
+#define XTHAL_ABI_UNDEFINED -1
+#endif
+
+#ifndef XTHAL_ABI_WINDOWED
+#define XTHAL_ABI_WINDOWED 0
+#endif
+
+#ifndef XTHAL_ABI_CALL0
+#define XTHAL_ABI_CALL0 1
+#endif
static void xtensa_wild_group_interleave (lang_statement_union_type *);
static void xtensa_colocate_output_literals (lang_statement_union_type *);
+static void xtensa_strip_inconsistent_linkonce_sections
+ (lang_statement_list_type *);
-/* Flag for the emulation-specific "--no-relax" option. */
-static bfd_boolean disable_relaxation = FALSE;
-
/* This number is irrelevant until we turn on use_literal_pages */
static bfd_vma xtensa_page_power = 12; /* 4K pages. */
/* To force a page break between literals and text, change
xtensa_use_literal_pages to "true". */
-static bfd_boolean xtensa_use_literal_pages = FALSE;
+static bool xtensa_use_literal_pages = false;
#define EXTRA_VALIDATION 0
+/* Xtensa ABI.
+ This option is defined in BDF library. */
+extern int elf32xtensa_abi;
+
static char *
elf_xtensa_choose_target (int argc ATTRIBUTE_UNUSED,
}
-static bfd_boolean
-elf_xtensa_place_orphan (lang_input_statement_type *file, asection *s)
+static void
+elf_xtensa_before_parse (void)
+{
+ /* Just call the default hook.... Tensilica's version of this function
+ does some other work that isn't relevant here. */
+ gld${EMULATION_NAME}_before_parse ();
+}
+
+
+static void
+remove_section (bfd *abfd, asection *os)
+{
+ asection **spp;
+ for (spp = &abfd->sections; *spp; spp = &(*spp)->next)
+ if (*spp == os)
+ {
+ *spp = os->next;
+ os->owner->section_count--;
+ break;
+ }
+}
+
+
+static bool
+replace_insn_sec_with_prop_sec (bfd *abfd,
+ const char *insn_sec_name,
+ const char *prop_sec_name,
+ char **error_message)
+{
+ asection *insn_sec;
+ asection *prop_sec;
+ bfd_byte *prop_contents = NULL;
+ bfd_byte *insn_contents = NULL;
+ unsigned entry_count;
+ unsigned entry;
+ Elf_Internal_Shdr *rel_hdr;
+ Elf_Internal_Rela *internal_relocs = NULL;
+ unsigned reloc_count;
+
+ *error_message = "";
+ insn_sec = bfd_get_section_by_name (abfd, insn_sec_name);
+ if (insn_sec == NULL)
+ return true;
+ entry_count = insn_sec->size / 8;
+
+ prop_sec = bfd_get_section_by_name (abfd, prop_sec_name);
+ if (prop_sec != NULL && insn_sec != NULL)
+ {
+ *error_message = _("file already has property tables");
+ return false;
+ }
+
+ if (insn_sec->size != 0)
+ {
+ insn_contents = (bfd_byte *) xmalloc (insn_sec->size);
+ if (! bfd_get_section_contents (abfd, insn_sec, insn_contents,
+ (file_ptr) 0, insn_sec->size))
+ {
+ *error_message = _("failed to read section contents");
+ goto cleanup;
+ }
+ }
+
+ /* Create a property table section for it. */
+ prop_sec_name = strdup (prop_sec_name);
+ prop_sec = bfd_make_section_with_flags
+ (abfd, prop_sec_name, bfd_section_flags (insn_sec));
+ if (prop_sec == NULL
+ || !bfd_set_section_alignment (prop_sec, 2))
+ {
+ *error_message = _("could not create new section");
+ goto cleanup;
+ }
+
+ prop_sec->size = entry_count * 12;
+ prop_contents = (bfd_byte *) bfd_zalloc (abfd, prop_sec->size);
+ elf_section_data (prop_sec)->this_hdr.contents = prop_contents;
+
+ /* The entry size and size must be set to allow the linker to compute
+ the number of relocations since it does not use reloc_count. */
+ rel_hdr = _bfd_elf_single_rel_hdr (prop_sec);
+ rel_hdr->sh_entsize = sizeof (Elf32_External_Rela);
+ rel_hdr->sh_size = _bfd_elf_single_rel_hdr (insn_sec)->sh_size;
+
+ if (prop_contents == NULL && prop_sec->size != 0)
+ {
+ *error_message = _("could not allocate section contents");
+ goto cleanup;
+ }
+
+ /* Read the relocations. */
+ reloc_count = insn_sec->reloc_count;
+ if (reloc_count != 0)
+ {
+ /* If there is already an internal_reloc, then save it so that the
+ read_relocs function freshly allocates a copy. */
+ Elf_Internal_Rela *saved_relocs = elf_section_data (insn_sec)->relocs;
+
+ elf_section_data (insn_sec)->relocs = NULL;
+ internal_relocs =
+ _bfd_elf_link_read_relocs (abfd, insn_sec, NULL, NULL, false);
+ elf_section_data (insn_sec)->relocs = saved_relocs;
+
+ if (internal_relocs == NULL)
+ {
+ *error_message = _("out of memory");
+ goto cleanup;
+ }
+ }
+
+ /* Create a relocation section for the property section. */
+ if (internal_relocs != NULL)
+ {
+ elf_section_data (prop_sec)->relocs = internal_relocs;
+ prop_sec->reloc_count = reloc_count;
+ }
+
+ /* Now copy each insn table entry to the prop table entry with
+ appropriate flags. */
+ for (entry = 0; entry < entry_count; ++entry)
+ {
+ unsigned value;
+ unsigned flags = (XTENSA_PROP_INSN | XTENSA_PROP_NO_TRANSFORM
+ | XTENSA_PROP_INSN_NO_REORDER);
+ value = bfd_get_32 (abfd, insn_contents + entry * 8 + 0);
+ bfd_put_32 (abfd, value, prop_contents + entry * 12 + 0);
+ value = bfd_get_32 (abfd, insn_contents + entry * 8 + 4);
+ bfd_put_32 (abfd, value, prop_contents + entry * 12 + 4);
+ bfd_put_32 (abfd, flags, prop_contents + entry * 12 + 8);
+ }
+
+ /* Now copy all of the relocations. Change offsets for the
+ instruction table section to offsets in the property table
+ section. */
+ if (internal_relocs)
+ {
+ unsigned i;
+
+ for (i = 0; i < reloc_count; i++)
+ {
+ Elf_Internal_Rela *rela;
+ unsigned r_offset;
+
+ rela = &internal_relocs[i];
+
+ /* If this relocation is to the .xt.insn section,
+ change the section number and the offset. */
+ r_offset = rela->r_offset;
+ r_offset += 4 * (r_offset / 8);
+ rela->r_offset = r_offset;
+ }
+ }
+
+ remove_section (abfd, insn_sec);
+
+ free (insn_contents);
+
+ return true;
+
+ cleanup:
+ if (prop_sec && prop_sec->owner)
+ remove_section (abfd, prop_sec);
+ free (insn_contents);
+ free (internal_relocs);
+
+ return false;
+}
+
+
+#define PROP_SEC_BASE_NAME ".xt.prop"
+#define INSN_SEC_BASE_NAME ".xt.insn"
+#define LINKONCE_SEC_OLD_TEXT_BASE_NAME ".gnu.linkonce.x."
+
+
+static void
+replace_instruction_table_sections (bfd *abfd, asection *sec)
+{
+ char *message = "";
+ const char *insn_sec_name = NULL;
+ char *prop_sec_name = NULL;
+ char *owned_prop_sec_name = NULL;
+ const char *sec_name;
+
+ sec_name = bfd_section_name (sec);
+ if (strcmp (sec_name, INSN_SEC_BASE_NAME) == 0)
+ {
+ insn_sec_name = INSN_SEC_BASE_NAME;
+ prop_sec_name = PROP_SEC_BASE_NAME;
+ }
+ else if (startswith (sec_name, LINKONCE_SEC_OLD_TEXT_BASE_NAME))
+ {
+ insn_sec_name = sec_name;
+ owned_prop_sec_name = (char *) xmalloc (strlen (sec_name) + 20);
+ prop_sec_name = owned_prop_sec_name;
+ strcpy (prop_sec_name, ".gnu.linkonce.prop.t.");
+ strcat (prop_sec_name,
+ sec_name + strlen (LINKONCE_SEC_OLD_TEXT_BASE_NAME));
+ }
+ if (insn_sec_name != NULL)
+ {
+ if (! replace_insn_sec_with_prop_sec (abfd, insn_sec_name, prop_sec_name,
+ &message))
+ {
+ einfo (_("%P: warning: failed to convert %s table in %pB (%s); subsequent disassembly may be incomplete\n"),
+ insn_sec_name, abfd, message);
+ }
+ }
+ free (owned_prop_sec_name);
+}
+
+
+/* This is called after all input sections have been opened to convert
+ instruction tables (.xt.insn, gnu.linkonce.x.*) tables into property
+ tables (.xt.prop) before any section placement. */
+
+static void
+elf_xtensa_after_open (void)
+{
+ /* First call the ELF version. */
+ gld${EMULATION_NAME}_after_open ();
+
+ /* Now search the input files looking for instruction table sections. */
+ LANG_FOR_EACH_INPUT_STATEMENT (f)
+ {
+ asection *sec = f->the_bfd->sections;
+ asection *next_sec;
+
+ /* Do not use bfd_map_over_sections here since we are removing
+ sections as we iterate. */
+ while (sec != NULL)
+ {
+ next_sec = sec->next;
+ replace_instruction_table_sections (f->the_bfd, sec);
+ sec = next_sec;
+ }
+ }
+}
+
+
+static bool
+xt_config_info_unpack_and_check (char *data,
+ bool *pmismatch,
+ char **pmsg)
{
- /* Early exit for relocatable links. */
- if (link_info.relocatable)
- return FALSE;
+ char *d, *key;
+ int num;
- return gld${EMULATION_NAME}_place_orphan (file, s);
+ *pmismatch = false;
+
+ d = data;
+ while (*d)
+ {
+ key = d;
+ d = strchr (d, '=');
+ if (! d)
+ goto error;
+
+ /* Overwrite the equal sign. */
+ *d++ = 0;
+
+ /* Check if this is a quoted string or a number. */
+ if (*d == '"')
+ {
+ /* No string values are currently checked by LD;
+ just skip over the quotes. */
+ d++;
+ d = strchr (d, '"');
+ if (! d)
+ goto error;
+ /* Overwrite the trailing quote. */
+ *d++ = 0;
+ }
+ else
+ {
+ if (*d == 0)
+ goto error;
+ num = strtoul (d, &d, 0);
+
+ if (! strcmp (key, "ABI"))
+ {
+ if (elf32xtensa_abi == XTHAL_ABI_UNDEFINED)
+ {
+ elf32xtensa_abi = num;
+ }
+ else if (num != elf32xtensa_abi)
+ {
+ *pmismatch = true;
+ *pmsg = "ABI does not match";
+ }
+ }
+ else if (! strcmp (key, "USE_ABSOLUTE_LITERALS"))
+ {
+ if (num != XSHAL_USE_ABSOLUTE_LITERALS)
+ {
+ *pmismatch = true;
+ *pmsg = "incompatible use of the Extended L32R option";
+ }
+ }
+ }
+
+ if (*d++ != '\n')
+ goto error;
+ }
+
+ return true;
+
+ error:
+ return false;
}
+#define XTINFO_NAME "Xtensa_Info"
+#define XTINFO_NAMESZ 12
+#define XTINFO_TYPE 1
+
static void
-elf_xtensa_before_parse (void)
+check_xtensa_info (bfd *abfd, asection *info_sec)
{
- /* Just call the default hook.... Tensilica's version of this function
- does some other work that isn't relevant here. */
- gld${EMULATION_NAME}_before_parse ();
+ char *data, *errmsg = "";
+ bool mismatch;
+
+ data = xmalloc (info_sec->size);
+ if (! bfd_get_section_contents (abfd, info_sec, data, 0, info_sec->size))
+ einfo (_("%F%P: %pB: cannot read contents of section %pA\n"), abfd, info_sec);
+
+ if (info_sec->size > 24
+ && info_sec->size >= 24 + bfd_get_32 (abfd, data + 4)
+ && bfd_get_32 (abfd, data + 0) == XTINFO_NAMESZ
+ && bfd_get_32 (abfd, data + 8) == XTINFO_TYPE
+ && strcmp (data + 12, XTINFO_NAME) == 0
+ && xt_config_info_unpack_and_check (data + 12 + XTINFO_NAMESZ,
+ &mismatch, &errmsg))
+ {
+ if (mismatch)
+ einfo (_("%P: %pB: warning: incompatible Xtensa configuration (%s)\n"),
+ abfd, errmsg);
+ }
+ else
+ einfo (_("%P: %pB: warning: cannot parse .xtensa.info section\n"), abfd);
+
+ free (data);
}
static void
elf_xtensa_before_allocation (void)
{
- bfd *in_bfd;
- bfd_boolean is_big_endian = XCHAL_HAVE_BE;
+ asection *info_sec, *first_info_sec;
+ bfd *first_bfd;
+ bool is_big_endian = XCHAL_HAVE_BE;
/* Check that the output endianness matches the Xtensa
configuration. The BFD library always includes both big and
required to process relocations) for the selected Xtensa
configuration. */
- if (is_big_endian && output_bfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
+ if (is_big_endian
+ && link_info.output_bfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
{
einfo (_("%F%P: little endian output does not match "
"Xtensa configuration\n"));
}
- if (!is_big_endian && output_bfd->xvec->byteorder == BFD_ENDIAN_BIG)
+ if (!is_big_endian
+ && link_info.output_bfd->xvec->byteorder == BFD_ENDIAN_BIG)
{
einfo (_("%F%P: big endian output does not match "
"Xtensa configuration\n"));
}
- /* Check that the endianness for each input file matches the output.
- The merge_private_bfd_data hook has already reported any mismatches
- as errors, but those errors are not fatal. At this point, we
- cannot go any further if there are any mismatches. */
+ /* Keep track of the first input .xtensa.info section, and as a fallback,
+ the first input bfd where a .xtensa.info section could be created.
+ After the input .xtensa.info has been checked, the contents of the
+ first one will be replaced with the output .xtensa.info table. */
+ first_info_sec = 0;
+ first_bfd = 0;
+
+ LANG_FOR_EACH_INPUT_STATEMENT (f)
+ {
+ /* Check that the endianness for each input file matches the output.
+ The merge_private_bfd_data hook has already reported any mismatches
+ as errors, but those errors are not fatal. At this point, we
+ cannot go any further if there are any mismatches. */
+ if ((is_big_endian && f->the_bfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
+ || (!is_big_endian && f->the_bfd->xvec->byteorder == BFD_ENDIAN_BIG))
+ einfo (_("%F%P: cross-endian linking for %pB not supported\n"),
+ f->the_bfd);
+
+ if (! first_bfd)
+ first_bfd = f->the_bfd;
+
+ info_sec = bfd_get_section_by_name (f->the_bfd, ".xtensa.info");
+ if (! info_sec)
+ continue;
+
+ if (! first_info_sec)
+ first_info_sec = info_sec;
+
+ /* Unpack the .xtensa.info section and check it against the current
+ Xtensa configuration. */
+ check_xtensa_info (f->the_bfd, info_sec);
+
+ /* Do not include this copy of .xtensa.info in the output. */
+ info_sec->size = 0;
+ info_sec->flags |= SEC_EXCLUDE;
+ }
- for (in_bfd = link_info.input_bfds;
- in_bfd != NULL;
- in_bfd = in_bfd->link_next)
+ /* Reuse the first .xtensa.info input section to hold the output
+ .xtensa.info; or, if none were found, create a new section in the
+ first input bfd (assuming there is one). */
+ info_sec = first_info_sec;
+ if (! info_sec && first_bfd)
{
- if ((is_big_endian && in_bfd->xvec->byteorder == BFD_ENDIAN_LITTLE)
- || (!is_big_endian && in_bfd->xvec->byteorder == BFD_ENDIAN_BIG))
- einfo (_("%F%P: cross-endian linking not supported\n"));
+ info_sec = bfd_make_section_with_flags (first_bfd, ".xtensa.info",
+ SEC_HAS_CONTENTS | SEC_READONLY);
+ if (! info_sec)
+ einfo (_("%F%P: failed to create .xtensa.info section\n"));
+ }
+ if (info_sec)
+ {
+ int xtensa_info_size;
+ char *data;
+
+ info_sec->flags &= ~SEC_EXCLUDE;
+ info_sec->flags |= SEC_IN_MEMORY;
+
+ data = xmalloc (100);
+ sprintf (data, "USE_ABSOLUTE_LITERALS=%d\nABI=%d\n",
+ XSHAL_USE_ABSOLUTE_LITERALS, xtensa_abi_choice ());
+ xtensa_info_size = strlen (data) + 1;
+
+ /* Add enough null terminators to pad to a word boundary. */
+ do
+ data[xtensa_info_size++] = 0;
+ while ((xtensa_info_size & 3) != 0);
+
+ info_sec->size = 12 + XTINFO_NAMESZ + xtensa_info_size;
+ info_sec->contents = xmalloc (info_sec->size);
+ bfd_put_32 (info_sec->owner, XTINFO_NAMESZ, info_sec->contents + 0);
+ bfd_put_32 (info_sec->owner, xtensa_info_size, info_sec->contents + 4);
+ bfd_put_32 (info_sec->owner, XTINFO_TYPE, info_sec->contents + 8);
+ memcpy (info_sec->contents + 12, XTINFO_NAME, XTINFO_NAMESZ);
+ memcpy (info_sec->contents + 12 + XTINFO_NAMESZ, data, xtensa_info_size);
+ free (data);
}
/* Enable relaxation by default if the "--no-relax" option was not
specified. This is done here instead of in the before_parse hook
because there is a check in main() to prohibit use of --relax and
-r together and that combination should be allowed for Xtensa. */
+ if (RELAXATION_DISABLED_BY_DEFAULT)
+ ENABLE_RELAXATION;
- if (!disable_relaxation)
- command_line.relax = TRUE;
+ xtensa_strip_inconsistent_linkonce_sections (stat_ptr);
gld${EMULATION_NAME}_before_allocation ();
xtensa_wild_group_interleave (stat_ptr->head);
- if (command_line.relax)
+
+ if (RELAXATION_ENABLED)
xtensa_colocate_output_literals (stat_ptr->head);
/* TBD: We need to force the page alignments to here and only do
{
reloc_deps_e *preds;
reloc_deps_e *succs;
- bfd_boolean is_only_literal;
+ bool is_only_literal;
};
bfd_vma, /* target_offset */
void *); /* closure */
-extern bfd_boolean xtensa_callback_required_dependence
+extern bool xtensa_callback_required_dependence
(bfd *, asection *, struct bfd_link_info *, deps_callback_t, void *);
-static void xtensa_ldlang_clear_addresses
- (lang_statement_union_type *);
-static bfd_boolean ld_local_file_relocations_fit
+static void xtensa_ldlang_clear_addresses (lang_statement_union_type *);
+static bool ld_local_file_relocations_fit
(lang_statement_union_type *, const reloc_deps_graph *);
static bfd_vma ld_assign_relative_paged_dot
(bfd_vma, lang_statement_union_type *, const reloc_deps_graph *,
- bfd_boolean);
+ bool);
static bfd_vma ld_xtensa_insert_page_offsets
- (bfd_vma, lang_statement_union_type *, reloc_deps_graph *, bfd_boolean);
+ (bfd_vma, lang_statement_union_type *, reloc_deps_graph *, bool);
#if EXTRA_VALIDATION
-static size_t ld_count_children
- (lang_statement_union_type *);
+static size_t ld_count_children (lang_statement_union_type *);
#endif
extern lang_statement_list_type constructor_list;
-/* Begin verbatim code from ldlang.c:
- the following are copied from ldlang.c because they are defined
- there statically. */
-
-static void
-lang_for_each_statement_worker (void (*func) (lang_statement_union_type *),
- lang_statement_union_type *s)
-{
- for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
- {
- func (s);
-
- switch (s->header.type)
- {
- case lang_constructors_statement_enum:
- lang_for_each_statement_worker (func, constructor_list.head);
- break;
- case lang_output_section_statement_enum:
- lang_for_each_statement_worker
- (func,
- s->output_section_statement.children.head);
- break;
- case lang_wild_statement_enum:
- lang_for_each_statement_worker
- (func,
- s->wild_statement.children.head);
- break;
- case lang_group_statement_enum:
- lang_for_each_statement_worker (func,
- s->group_statement.children.head);
- break;
- case lang_data_statement_enum:
- case lang_reloc_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_padding_statement_enum:
- case lang_address_statement_enum:
- case lang_fill_statement_enum:
- break;
- default:
- FAIL ();
- break;
- }
- }
-}
-
-/* End of verbatim code from ldlang.c. */
-
-
static reloc_deps_section *
xtensa_get_section_deps (const reloc_deps_graph *deps ATTRIBUTE_UNUSED,
asection *sec)
/* We have a separate function for this so that
we could in the future keep a completely independent
structure that maps a section to its dependence edges.
- For now, we place these in the sec->userdata field. */
- reloc_deps_section *sec_deps = sec->userdata;
+ For now, we place these in the sec->userdata field.
+ This doesn't clash with ldlang.c use of userdata for output
+ sections, and during map output for input sections, since the
+ xtensa use is only for input sections and only extant in
+ before_allocation. */
+ reloc_deps_section *sec_deps = bfd_section_userdata (sec);
return sec_deps;
}
asection *sec,
reloc_deps_section *deps_section)
{
- sec->userdata = deps_section;
+ bfd_set_section_userdata (sec, deps_section);
}
{
new_sections[i] = deps->sections[i];
}
- if (deps->sections != NULL)
- free (deps->sections);
+ free (deps->sections);
deps->sections = new_sections;
deps->size = new_size;
}
}
xtensa_set_section_deps (deps, sec, NULL);
}
- if (deps->sections)
- free (deps->sections);
-
+ free (deps->sections);
free (deps);
}
-static bfd_boolean
+static bool
section_is_source (const reloc_deps_graph *deps ATTRIBUTE_UNUSED,
lang_statement_union_type *s)
{
const reloc_deps_section *sec_deps;
if (s->header.type != lang_input_section_enum)
- return FALSE;
+ return false;
sec = s->input_section.section;
sec_deps = xtensa_get_section_deps (deps, sec);
}
-static bfd_boolean
+static bool
section_is_target (const reloc_deps_graph *deps ATTRIBUTE_UNUSED,
lang_statement_union_type *s)
{
const reloc_deps_section *sec_deps;
if (s->header.type != lang_input_section_enum)
- return FALSE;
+ return false;
sec = s->input_section.section;
sec_deps = xtensa_get_section_deps (deps, sec);
return sec_deps && sec_deps->preds != NULL;
}
-static bfd_boolean
+
+static bool
section_is_source_or_target (const reloc_deps_graph *deps ATTRIBUTE_UNUSED,
lang_statement_union_type *s)
{
/* Can only be called with lang_statements that have lists. Returns
- false if the list is empty. */
+ FALSE if the list is empty. */
-static bfd_boolean
+static bool
iter_stack_empty (xtensa_ld_iter_stack **stack_p)
{
return *stack_p == NULL;
}
-static bfd_boolean
+static bool
iter_stack_push (xtensa_ld_iter_stack **stack_p,
lang_statement_union_type *parent)
{
break;
default:
ASSERT (0);
- return FALSE;
+ return false;
}
/* Empty. do not push. */
if (l->tail == &l->head)
- return FALSE;
+ return false;
stack = xmalloc (sizeof (xtensa_ld_iter_stack));
memset (stack, 0, sizeof (xtensa_ld_iter_stack));
if (*stack_p != NULL)
(*stack_p)->prev = stack;
*stack_p = stack;
- return TRUE;
+ return true;
}
static void
-iter_stack_copy_current (xtensa_ld_iter_stack **stack_p,
- xtensa_ld_iter *front)
+iter_stack_copy_current (xtensa_ld_iter_stack **stack_p, xtensa_ld_iter *front)
{
*front = (*stack_p)->iterloc;
}
xtensa_ld_iter current; /* Location we are checking. */
xtensa_ld_iter *current_p = NULL;
- bfd_boolean in_literals = FALSE;
+ bool in_literals = false;
if (deps->count == 0)
return;
-#if 0
- ld_assign_relative_paged_dot (0x100000, statement, deps,
- xtensa_use_literal_pages);
-
- if (!ld_local_file_relocations_fit (statement, deps))
- fprintf (stderr, "initial relocation placement does not fit\n");
-
- lang_for_each_statement_worker (xtensa_ldlang_clear_addresses, statement);
-#endif
-
iter_stack_create (stack_p, statement);
while (!iter_stack_empty (stack_p))
{
- bfd_boolean skip_increment = FALSE;
+ bool skip_increment = false;
lang_statement_union_type *l = iter_stack_current (stack_p);
switch (l->header.type)
case lang_assignment_statement_enum:
/* Any assignment statement should block reordering across it. */
front_p = NULL;
- in_literals = FALSE;
+ in_literals = false;
break;
case lang_input_section_enum:
}
else
{
- bfd_boolean is_target;
+ bool is_target;
current_p = ¤t;
iter_stack_copy_current (stack_p, current_p);
is_target = (section_is_target (deps, l)
{
iter_stack_copy_current (stack_p, front_p);
if (!is_target)
- in_literals = FALSE;
+ in_literals = false;
}
else
{
front_p->loc = &(*front_p->loc)->header.next;
/* Do not increment the current pointer. */
- skip_increment = TRUE;
+ skip_increment = true;
}
}
}
}
-static bfd_boolean
-deps_has_sec_edge (const reloc_deps_graph *deps,
- asection *src,
- asection *tgt)
+static bool
+deps_has_sec_edge (const reloc_deps_graph *deps, asection *src, asection *tgt)
{
const reloc_deps_section *sec_deps;
const reloc_deps_e *sec_deps_e;
sec_deps = xtensa_get_section_deps (deps, src);
if (sec_deps == NULL)
- return FALSE;
+ return false;
for (sec_deps_e = sec_deps->succs;
sec_deps_e != NULL;
{
ASSERT (sec_deps_e->src == src);
if (sec_deps_e->tgt == tgt)
- return TRUE;
+ return true;
}
- return FALSE;
+ return false;
}
-static bfd_boolean
+static bool
deps_has_edge (const reloc_deps_graph *deps,
lang_statement_union_type *src,
lang_statement_union_type *tgt)
{
if (!section_is_source (deps, src))
- return FALSE;
+ return false;
if (!section_is_target (deps, tgt))
- return FALSE;
+ return false;
if (src->header.type != lang_input_section_enum)
- return FALSE;
+ return false;
if (tgt->header.type != lang_input_section_enum)
- return FALSE;
+ return false;
return deps_has_sec_edge (deps, src->input_section.section,
tgt->input_section.section);
static void
-add_deps_edge (reloc_deps_graph *deps,
- asection *src_sec,
- asection *tgt_sec)
+add_deps_edge (reloc_deps_graph *deps, asection *src_sec, asection *tgt_sec)
{
reloc_deps_section *src_sec_deps;
reloc_deps_section *tgt_sec_deps;
{
lang_statement_union_type *l = iter_stack_current (&stack);
+ if (l == NULL && link_info.non_contiguous_regions)
+ einfo (_("%F%P: Relaxation not supported with "
+ "--enable-non-contiguous-regions.\n"));
+
if (l->header.type == lang_input_section_enum)
{
lang_input_section_type *input;
input = &l->input_section;
- xtensa_callback_required_dependence (input->ifile->the_bfd,
+ xtensa_callback_required_dependence (input->section->owner,
input->section,
&link_info,
/* Use the same closure. */
#endif /* EXTRA_VALIDATION */
+/* Check if a particular section is included in the link. This will only
+ be true for one instance of a particular linkonce section. */
+
+static bool input_section_found = false;
+static asection *input_section_target = NULL;
+
+static void
+input_section_linked_worker (lang_statement_union_type *statement)
+{
+ if ((statement->header.type == lang_input_section_enum
+ && (statement->input_section.section == input_section_target)))
+ input_section_found = true;
+}
+
+static bool
+input_section_linked (asection *sec)
+{
+ input_section_found = false;
+ input_section_target = sec;
+ lang_for_each_statement_worker (input_section_linked_worker, stat_ptr->head);
+ return input_section_found;
+}
+
+
+/* Strip out any linkonce property tables or XCC exception tables where the
+ associated linkonce text is from a different object file. Normally,
+ a matching set of linkonce sections is taken from the same object file,
+ but sometimes the files are compiled differently so that some of the
+ linkonce sections are not present in all files. Stripping the
+ inconsistent sections like this is not completely robust -- a much
+ better solution is to use comdat groups. */
+
+static int linkonce_len = sizeof (".gnu.linkonce.") - 1;
+
+static bool
+is_inconsistent_linkonce_section (asection *sec)
+{
+ bfd *abfd = sec->owner;
+ const char *sec_name = bfd_section_name (sec);
+ const char *name;
+
+ if ((bfd_section_flags (sec) & SEC_LINK_ONCE) == 0
+ || strncmp (sec_name, ".gnu.linkonce.", linkonce_len) != 0)
+ return false;
+
+ /* Check if this is an Xtensa property section or an exception table
+ for Tensilica's XCC compiler. */
+ name = sec_name + linkonce_len;
+ if (startswith (name, "prop."))
+ name = strchr (name + 5, '.') ? strchr (name + 5, '.') + 1 : name + 5;
+ else if (name[1] == '.'
+ && (name[0] == 'p' || name[0] == 'e' || name[0] == 'h'))
+ name += 2;
+ else
+ name = 0;
+
+ if (name)
+ {
+ char *dep_sec_name = xmalloc (strlen (sec_name) + 1);
+ asection *dep_sec;
+
+ /* Get the associated linkonce text section and check if it is
+ included in the link. If not, this section is inconsistent
+ and should be stripped. */
+ strcpy (dep_sec_name, ".gnu.linkonce.t.");
+ strcat (dep_sec_name, name);
+ dep_sec = bfd_get_section_by_name (abfd, dep_sec_name);
+ if (dep_sec == NULL || ! input_section_linked (dep_sec))
+ {
+ free (dep_sec_name);
+ return true;
+ }
+ free (dep_sec_name);
+ }
+
+ return false;
+}
+
+
+static void
+xtensa_strip_inconsistent_linkonce_sections (lang_statement_list_type *slist)
+{
+ lang_statement_union_type **s_p = &slist->head;
+ while (*s_p)
+ {
+ lang_statement_union_type *s = *s_p;
+ lang_statement_union_type *s_next = (*s_p)->header.next;
+
+ switch (s->header.type)
+ {
+ case lang_input_section_enum:
+ if (is_inconsistent_linkonce_section (s->input_section.section))
+ {
+ s->input_section.section->output_section = bfd_abs_section_ptr;
+ *s_p = s_next;
+ continue;
+ }
+ break;
+
+ case lang_constructors_statement_enum:
+ xtensa_strip_inconsistent_linkonce_sections (&constructor_list);
+ break;
+
+ case lang_output_section_statement_enum:
+ if (s->output_section_statement.children.head)
+ xtensa_strip_inconsistent_linkonce_sections
+ (&s->output_section_statement.children);
+ break;
+
+ case lang_wild_statement_enum:
+ xtensa_strip_inconsistent_linkonce_sections
+ (&s->wild_statement.children);
+ break;
+
+ case lang_group_statement_enum:
+ xtensa_strip_inconsistent_linkonce_sections
+ (&s->group_statement.children);
+ break;
+
+ case lang_data_statement_enum:
+ case lang_reloc_statement_enum:
+ case lang_object_symbols_statement_enum:
+ case lang_output_statement_enum:
+ case lang_target_statement_enum:
+ case lang_input_statement_enum:
+ case lang_assignment_statement_enum:
+ case lang_padding_statement_enum:
+ case lang_address_statement_enum:
+ case lang_fill_statement_enum:
+ break;
+
+ default:
+ FAIL ();
+ break;
+ }
+
+ s_p = &(*s_p)->header.next;
+ }
+
+ /* Reset the tail of the list, in case the last entry was removed. */
+ if (s_p != slist->tail)
+ slist->tail = s_p;
+}
+
+
static void
xtensa_wild_group_interleave_callback (lang_statement_union_type *statement)
{
size_t old_child_count;
size_t new_child_count;
#endif
- bfd_boolean no_reorder;
+ bool no_reorder;
w = &statement->wild_statement;
- no_reorder = FALSE;
+ no_reorder = false;
/* If it has 0 or 1 section bound, then do not reorder. */
if (w->children.head == NULL
|| (w->children.head->header.type == lang_input_section_enum
&& w->children.head->header.next == NULL))
- no_reorder = TRUE;
+ no_reorder = true;
if (w->filenames_sorted)
- no_reorder = TRUE;
+ no_reorder = true;
/* Check for sorting in a section list wildcard spec as well. */
if (!no_reorder)
struct wildcard_list *l;
for (l = w->section_list; l != NULL; l = l->next)
{
- if (l->spec.sorted == TRUE)
+ if (l->spec.sorted == by_name)
{
- no_reorder = TRUE;
+ no_reorder = true;
break;
}
}
&& ((strcmp (".init", l->spec.name) == 0)
|| (strcmp (".fini", l->spec.name) == 0)))
{
- no_reorder = TRUE;
+ no_reorder = true;
break;
}
}
static void
-xtensa_layout_wild (const reloc_deps_graph *deps,
- lang_wild_statement_type *w)
+xtensa_layout_wild (const reloc_deps_graph *deps, lang_wild_statement_type *w)
{
/* If it does not fit initially, we need to do this step. Move all
of the wild literal sections to a new list, then move each of
literal_wild.header.next = NULL;
literal_wild.header.type = lang_wild_statement_enum;
literal_wild.filename = NULL;
- literal_wild.filenames_sorted = FALSE;
+ literal_wild.filenames_sorted = false;
literal_wild.section_list = NULL;
- literal_wild.keep_sections = FALSE;
+ literal_wild.keep_sections = false;
literal_wild.children.head = NULL;
literal_wild.children.tail = &literal_wild.children.head;
while (literal_wild.children.head != NULL)
{
lang_statement_union_type *lit = literal_wild.children.head;
- bfd_boolean placed = FALSE;
+ bool placed = false;
#if EXTRA_VALIDATION
ASSERT (ct2 > 0);
/* Place it here. */
lit->header.next = *s_p;
*s_p = lit;
- placed = TRUE;
+ placed = true;
break;
}
}
static void
xtensa_colocate_output_literals_callback (lang_statement_union_type *statement)
{
- lang_output_section_statement_type *os;
reloc_deps_graph *deps;
if (statement->header.type == lang_output_section_statement_enum)
{
size_t old_child_count;
size_t new_child_count;
#endif
- bfd_boolean no_reorder = FALSE;
-
- os = &statement->output_section_statement;
+ bool no_reorder = false;
#if EXTRA_VALIDATION
old_child_count = ld_count_children (statement);
ld_assign_relative_paged_dot (bfd_vma dot,
lang_statement_union_type *s,
const reloc_deps_graph *deps ATTRIBUTE_UNUSED,
- bfd_boolean lit_align)
+ bool lit_align)
{
/* Walk through all of the input statements in this wild statement
assign dot to all of them. */
xtensa_ld_iter_stack *stack = NULL;
xtensa_ld_iter_stack **stack_p = &stack;
- bfd_boolean first_section = FALSE;
- bfd_boolean in_literals = FALSE;
+ bool first_section = false;
+ bool in_literals = false;
for (iter_stack_create (stack_p, s);
!iter_stack_empty (stack_p);
{
asection *section = l->input_section.section;
size_t align_pow = section->alignment_power;
- bfd_boolean do_xtensa_alignment = FALSE;
+ bool do_xtensa_alignment = false;
if (lit_align)
{
- bfd_boolean sec_is_target = section_is_target (deps, l);
- bfd_boolean sec_is_source = section_is_source (deps, l);
+ bool sec_is_target = section_is_target (deps, l);
+ bool sec_is_source = section_is_source (deps, l);
if (section->size != 0
&& (first_section
|| (in_literals && !sec_is_target)
|| (!in_literals && sec_is_target)))
{
- do_xtensa_alignment = TRUE;
+ do_xtensa_alignment = true;
}
- first_section = FALSE;
+ first_section = false;
if (section->size != 0)
in_literals = (sec_is_target && !sec_is_source);
}
}
-static bfd_boolean
+static bool
ld_local_file_relocations_fit (lang_statement_union_type *statement,
const reloc_deps_graph *deps ATTRIBUTE_UNUSED)
{
bfd_vma target_addr = e->tgt->output_offset & ~3;
if (l32r_addr < target_addr)
{
+ fflush (stdout);
fprintf (stderr, "Warning: "
"l32r target section before l32r\n");
- return FALSE;
+ fflush (stderr);
+ return false;
}
if (l32r_addr - target_addr > 256 * 1024 - align_penalty)
- return FALSE;
+ return false;
}
}
}
}
- return TRUE;
+ return true;
}
ld_xtensa_insert_page_offsets (bfd_vma dot,
lang_statement_union_type *s,
reloc_deps_graph *deps,
- bfd_boolean lit_align)
+ bool lit_align)
{
xtensa_ld_iter_stack *stack = NULL;
xtensa_ld_iter_stack **stack_p = &stack;
- bfd_boolean first_section = FALSE;
- bfd_boolean in_literals = FALSE;
+ bool first_section = false;
+ bool in_literals = false;
if (!lit_align)
- return FALSE;
+ return false;
for (iter_stack_create (stack_p, s);
!iter_stack_empty (stack_p);
case lang_input_section_enum:
{
asection *section = l->input_section.section;
- bfd_boolean do_xtensa_alignment = FALSE;
+ bool do_xtensa_alignment = false;
if (lit_align)
{
|| (in_literals && !section_is_target (deps, l))
|| (!in_literals && section_is_target (deps, l))))
{
- do_xtensa_alignment = TRUE;
+ do_xtensa_alignment = true;
}
- first_section = FALSE;
+ first_section = false;
if (section->size != 0)
{
in_literals = (section_is_target (deps, l)
etree_type *name_op = exp_nameop (NAME, ".");
etree_type *addend_op = exp_intop (1 << xtensa_page_power);
etree_type *add_op = exp_binop ('+', name_op, addend_op);
- etree_type *assign_op = exp_assop ('=', ".", add_op);
+ etree_type *assign_op = exp_assign (".", add_op, false);
lang_assignment_statement_type *assign_stmt;
lang_statement_union_type *assign_union;
lang_statement_list_type tmplist;
- lang_statement_list_type *old_stat_ptr = stat_ptr;
/* There is hidden state in "lang_add_assignment". It
appends the new assignment statement to the stat_ptr
list. Thus, we swap it before and after the call. */
- tmplist.head = NULL;
- tmplist.tail = &tmplist.head;
-
- stat_ptr = &tmplist;
+ lang_list_init (&tmplist);
+ push_stat_ptr (&tmplist);
/* Warning: side effect; statement appended to stat_ptr. */
assign_stmt = lang_add_assignment (assign_op);
assign_union = (lang_statement_union_type *) assign_stmt;
- stat_ptr = old_stat_ptr;
+ pop_stat_ptr ();
assign_union->header.next = l;
*(*stack_p)->iterloc.loc = assign_union;
EOF
-# Define some shell vars to insert bits of code into the standard elf
+# Define some shell vars to insert bits of code into the standard ELF
# parse_args and list_options functions.
#
PARSE_AND_LIST_PROLOGUE='
-#define OPTION_NO_RELAX 301
+#define OPTION_OPT_SIZEOPT (300)
+#define OPTION_LITERAL_MOVEMENT (OPTION_OPT_SIZEOPT + 1)
+#define OPTION_NO_LITERAL_MOVEMENT (OPTION_LITERAL_MOVEMENT + 1)
+#define OPTION_ABI_WINDOWED (OPTION_NO_LITERAL_MOVEMENT + 1)
+#define OPTION_ABI_CALL0 (OPTION_ABI_WINDOWED + 1)
+extern int elf32xtensa_size_opt;
+extern int elf32xtensa_no_literal_movement;
+extern int elf32xtensa_abi;
'
PARSE_AND_LIST_LONGOPTS='
- { "no-relax", no_argument, NULL, OPTION_NO_RELAX},
+ { "size-opt", no_argument, NULL, OPTION_OPT_SIZEOPT},
+ { "literal-movement", no_argument, NULL, OPTION_LITERAL_MOVEMENT},
+ { "no-literal-movement", no_argument, NULL, OPTION_NO_LITERAL_MOVEMENT},
+ { "abi-windowed", no_argument, NULL, OPTION_ABI_WINDOWED},
+ { "abi-call0", no_argument, NULL, OPTION_ABI_CALL0},
'
PARSE_AND_LIST_OPTIONS='
- fprintf (file, _(" --no-relax\t\tDo not relax branches or coalesce literals\n"));
+ fprintf (file, _("\
+ --size-opt When relaxing longcalls, prefer size\n\
+ optimization over branch target alignment\n"));
+ fprintf (file, _("\
+ --abi-windowed Choose windowed ABI for the output object\n"));
+ fprintf (file, _("\
+ --abi-call0 Choose call0 ABI for the output object\n"));
'
PARSE_AND_LIST_ARGS_CASES='
- case OPTION_NO_RELAX:
- disable_relaxation = TRUE;
+ case OPTION_OPT_SIZEOPT:
+ elf32xtensa_size_opt = 1;
+ break;
+ case OPTION_LITERAL_MOVEMENT:
+ elf32xtensa_no_literal_movement = 0;
+ break;
+ case OPTION_NO_LITERAL_MOVEMENT:
+ elf32xtensa_no_literal_movement = 1;
+ break;
+ case OPTION_ABI_WINDOWED:
+ elf32xtensa_abi = XTHAL_ABI_WINDOWED;
+ break;
+ case OPTION_ABI_CALL0:
+ elf32xtensa_abi = XTHAL_ABI_CALL0;
break;
'
# Replace some of the standard ELF functions with our own versions.
#
LDEMUL_BEFORE_PARSE=elf_xtensa_before_parse
+LDEMUL_AFTER_OPEN=elf_xtensa_after_open
LDEMUL_CHOOSE_TARGET=elf_xtensa_choose_target
-LDEMUL_PLACE_ORPHAN=elf_xtensa_place_orphan
LDEMUL_BEFORE_ALLOCATION=elf_xtensa_before_allocation
-
projects / binutils-gdb.git / blobdiff