# This shell script emits a C file. -*- C -*-
-# Copyright 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2015 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
#include "elf-bfd.h"
#include "elf64-ppc.h"
#include "ldlex.h"
+#include "elf/ppc64.h"
+
+static asection *ppc_add_stub_section (const char *, asection *);
+static void ppc_layout_sections_again (void);
+
+static struct ppc64_elf_params params = { NULL,
+ &ppc_add_stub_section,
+ &ppc_layout_sections_again,
+ 1, 0, 0,
+ ${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 0,
+ 0, -1, -1};
/* Fake input file for stubs. */
static lang_input_statement_type *stub_file;
-static int stub_added = 0;
/* Whether we need to call ppc_layout_sections_again. */
static int need_laying_out = 0;
-/* Maximum size of a group of input sections that can be handled by
- one stub section. A value of +/-1 indicates the bfd back-end
- should use a suitable default size. */
-static bfd_signed_vma group_size = 1;
-
/* Whether to add ".foo" entries for each "foo" in a version script. */
static int dotsyms = 1;
/* Whether to run tls optimization. */
static int no_tls_opt = 0;
-static int no_tls_get_addr_opt = 0;
/* Whether to run opd optimization. */
static int no_opd_opt = 0;
/* Whether to run toc optimization. */
static int no_toc_opt = 0;
-/* Whether to allow multiple toc sections. */
-static int no_multi_toc = 0;
-
/* Whether to sort input toc and got sections. */
static int no_toc_sort = 0;
-/* Set if PLT call stubs should load r11. */
-static int plt_static_chain = ${DEFAULT_PLT_STATIC_CHAIN-0};
-
-/* Set if PLT call stubs need to be thread safe on power7+. */
-static int plt_thread_safe = -1;
-
-/* Set if individual PLT call stubs should be aligned. */
-static int plt_stub_align = 0;
-
-/* Whether to emit symbols for stubs. */
-static int emit_stub_syms = -1;
-
static asection *toc_section = 0;
-/* Whether to canonicalize .opd so that there are no overlapping
- .opd entries. */
-static int non_overlapping_opd = 0;
-
/* This is called before the input files are opened. We create a new
fake input file to hold the stub sections. */
stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
ldlang_add_file (stub_file);
- if (!ppc64_elf_init_stub_bfd (stub_file->the_bfd, &link_info))
+ params.stub_bfd = stub_file->the_bfd;
+ if (params.save_restore_funcs < 0)
+ params.save_restore_funcs = !link_info.relocatable;
+ if (!ppc64_elf_init_stub_bfd (&link_info, ¶ms))
einfo ("%F%P: can not init BFD: %E\n");
}
if (stub_file != NULL)
{
if (!no_opd_opt
- && !ppc64_elf_edit_opd (&link_info, non_overlapping_opd))
+ && !ppc64_elf_edit_opd (&link_info))
einfo ("%X%P: can not edit %s: %E\n", "opd");
- if (ppc64_elf_tls_setup (&link_info, no_tls_get_addr_opt, &no_multi_toc)
+ if (ppc64_elf_tls_setup (&link_info)
&& !no_tls_opt)
{
/* Size the sections. This is premature, but we want to know the
asection *stub_sec;
flagword flags;
asection *output_section;
- const char *secname;
lang_output_section_statement_type *os;
struct hook_stub_info info;
stub_sec_name, flags);
if (stub_sec == NULL
|| !bfd_set_section_alignment (stub_file->the_bfd, stub_sec,
- plt_stub_align > 5 ? plt_stub_align : 5))
+ (params.plt_stub_align > 5
+ ? params.plt_stub_align
+ : 5)))
goto err_ret;
output_section = input_section->output_section;
- secname = bfd_get_section_name (output_section->owner, output_section);
- os = lang_output_section_find (secname);
+ os = lang_output_section_get (output_section);
info.input_section = input_section;
lang_list_init (&info.add);
if (info.add.head == NULL)
goto err_ret;
- stub_added = 1;
if (hook_in_stub (&info, &os->children.head))
return stub_sec;
static void
gld${EMULATION_NAME}_after_allocation (void)
{
- /* bfd_elf_discard_info just plays with data and debugging sections,
- ie. doesn't affect code size, so we can delay resizing the
- sections. It's likely we'll resize everything in the process of
- adding stubs. */
- if (bfd_elf_discard_info (link_info.output_bfd, &link_info))
- need_laying_out = 1;
+ int ret;
/* If generating a relocatable output file, then we don't have any
stubs. */
if (stub_file != NULL && !link_info.relocatable)
{
- int ret = ppc64_elf_setup_section_lists (&link_info,
- &ppc_add_stub_section,
- &ppc_layout_sections_again);
+ ret = ppc64_elf_setup_section_lists (&link_info);
if (ret < 0)
einfo ("%X%P: can not size stub section: %E\n");
- else if (ret > 0)
+ else
{
ppc64_elf_start_multitoc_partition (&link_info);
- if (!no_multi_toc)
+ if (!params.no_multi_toc)
{
toc_section = bfd_get_section_by_name (link_info.output_bfd,
".got");
}
if (ppc64_elf_layout_multitoc (&link_info)
- && !no_multi_toc
+ && !params.no_multi_toc
&& toc_section != NULL)
lang_for_each_statement (build_toc_list);
einfo ("%P: .init/.fini fragments use differing TOC pointers\n");
/* Call into the BFD backend to do the real work. */
- if (!ppc64_elf_size_stubs (&link_info, group_size,
- plt_static_chain, plt_thread_safe,
- plt_stub_align))
+ if (!ppc64_elf_size_stubs (&link_info))
einfo ("%X%P: can not size stub section: %E\n");
}
}
+ /* We can't parse and merge .eh_frame until the glink .eh_frame has
+ been generated. Otherwise the glink .eh_frame CIE won't be
+ merged with other CIEs, and worse, the glink .eh_frame FDEs won't
+ be listed in .eh_frame_hdr. */
+ ret = bfd_elf_discard_info (link_info.output_bfd, &link_info);
+ if (ret < 0)
+ {
+ einfo ("%X%P: .eh_frame/.stab edit: %E\n");
+ return;
+ }
+ else if (ret > 0)
+ need_laying_out = 1;
+
if (need_laying_out != -1)
{
gld${EMULATION_NAME}_map_segments (need_laying_out);
static void
gld${EMULATION_NAME}_finish (void)
{
+ char *msg = NULL;
+ char *line, *endline;
+
/* e_entry on PowerPC64 points to the function descriptor for
_start. If _start is missing, default to the first function
descriptor in the .opd section. */
- entry_section = ".opd";
-
- if (stub_added)
+ if (stub_file != NULL
+ && (elf_elfheader (link_info.output_bfd)->e_flags & EF_PPC64_ABI) == 1)
+ entry_section = ".opd";
+
+ if (params.emit_stub_syms < 0)
+ params.emit_stub_syms = 1;
+ if (stub_file != NULL
+ && !link_info.relocatable
+ && !ppc64_elf_build_stubs (&link_info, config.stats ? &msg : NULL))
+ einfo ("%X%P: can not build stubs: %E\n");
+
+ fflush (stdout);
+ for (line = msg; line != NULL; line = endline)
{
- char *msg = NULL;
- char *line, *endline;
-
- if (emit_stub_syms < 0)
- emit_stub_syms = 1;
- if (!ppc64_elf_build_stubs (emit_stub_syms, &link_info,
- config.stats ? &msg : NULL))
- einfo ("%X%P: can not build stubs: %E\n");
-
- fflush (stdout);
- for (line = msg; line != NULL; line = endline)
- {
- endline = strchr (line, '\n');
- if (endline != NULL)
- *endline++ = '\0';
- fprintf (stderr, "%s: %s\n", program_name, line);
- }
- fflush (stderr);
- if (msg != NULL)
- free (msg);
+ endline = strchr (line, '\n');
+ if (endline != NULL)
+ *endline++ = '\0';
+ fprintf (stderr, "%s: %s\n", program_name, line);
}
+ fflush (stderr);
+ if (msg != NULL)
+ free (msg);
ppc64_elf_restore_symbols (&link_info);
finish_default ();
#define OPTION_NO_PLT_ALIGN (OPTION_PLT_ALIGN + 1)
#define OPTION_STUBSYMS (OPTION_NO_PLT_ALIGN + 1)
#define OPTION_NO_STUBSYMS (OPTION_STUBSYMS + 1)
-#define OPTION_DOTSYMS (OPTION_NO_STUBSYMS + 1)
+#define OPTION_SAVRES (OPTION_NO_STUBSYMS + 1)
+#define OPTION_NO_SAVRES (OPTION_SAVRES + 1)
+#define OPTION_DOTSYMS (OPTION_NO_SAVRES + 1)
#define OPTION_NO_DOTSYMS (OPTION_DOTSYMS + 1)
#define OPTION_NO_TLS_OPT (OPTION_NO_DOTSYMS + 1)
#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
{ "no-emit-stub-syms", no_argument, NULL, OPTION_NO_STUBSYMS },
{ "dotsyms", no_argument, NULL, OPTION_DOTSYMS },
{ "no-dotsyms", no_argument, NULL, OPTION_NO_DOTSYMS },
+ { "save-restore-funcs", no_argument, NULL, OPTION_SAVRES },
+ { "no-save-restore-funcs", no_argument, NULL, OPTION_NO_SAVRES },
{ "no-tls-optimize", no_argument, NULL, OPTION_NO_TLS_OPT },
{ "no-tls-get-addr-optimize", no_argument, NULL, OPTION_NO_TLS_GET_ADDR_OPT },
{ "no-opd-optimize", no_argument, NULL, OPTION_NO_OPD_OPT },
--no-dotsyms Don'\''t do anything special in version scripts.\n"
));
fprintf (file, _("\
+ --save-restore-funcs Provide register save and restore routines used\n\
+ by gcc -Os code. Defaults to on for normal\n\
+ final link, off for ld -r.\n"
+ ));
+ fprintf (file, _("\
+ --no-save-restore-funcs Don'\''t provide these routines.\n"
+ ));
+ fprintf (file, _("\
--no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
));
fprintf (file, _("\
case OPTION_STUBGROUP_SIZE:
{
const char *end;
- group_size = bfd_scan_vma (optarg, &end, 0);
+ params.group_size = bfd_scan_vma (optarg, &end, 0);
if (*end)
einfo (_("%P%F: invalid number `%s'\''\n"), optarg);
}
break;
case OPTION_PLT_STATIC_CHAIN:
- plt_static_chain = 1;
+ params.plt_static_chain = 1;
break;
case OPTION_NO_PLT_STATIC_CHAIN:
- plt_static_chain = 0;
+ params.plt_static_chain = 0;
break;
case OPTION_PLT_THREAD_SAFE:
- plt_thread_safe = 1;
+ params.plt_thread_safe = 1;
break;
case OPTION_NO_PLT_THREAD_SAFE:
- plt_thread_safe = 0;
+ params.plt_thread_safe = 0;
break;
case OPTION_PLT_ALIGN:
unsigned long val = strtoul (optarg, &end, 0);
if (*end || val > 8)
einfo (_("%P%F: invalid --plt-align `%s'\''\n"), optarg);
- plt_stub_align = val;
+ params.plt_stub_align = val;
}
else
- plt_stub_align = 5;
+ params.plt_stub_align = 5;
break;
case OPTION_NO_PLT_ALIGN:
- plt_stub_align = 0;
+ params.plt_stub_align = 0;
break;
case OPTION_STUBSYMS:
- emit_stub_syms = 1;
+ params.emit_stub_syms = 1;
break;
case OPTION_NO_STUBSYMS:
- emit_stub_syms = 0;
+ params.emit_stub_syms = 0;
break;
case OPTION_DOTSYMS:
dotsyms = 0;
break;
+ case OPTION_SAVRES:
+ params.save_restore_funcs = 1;
+ break;
+
+ case OPTION_NO_SAVRES:
+ params.save_restore_funcs = 0;
+ break;
+
case OPTION_NO_TLS_OPT:
no_tls_opt = 1;
break;
case OPTION_NO_TLS_GET_ADDR_OPT:
- no_tls_get_addr_opt = 1;
+ params.no_tls_get_addr_opt = 1;
break;
case OPTION_NO_OPD_OPT:
break;
case OPTION_NO_MULTI_TOC:
- no_multi_toc = 1;
+ params.no_multi_toc = 1;
break;
case OPTION_NO_TOC_SORT:
break;
case OPTION_NON_OVERLAPPING_OPD:
- non_overlapping_opd = 1;
+ params.non_overlapping_opd = 1;
break;
case OPTION_TRADITIONAL_FORMAT:
no_tls_opt = 1;
- no_tls_get_addr_opt = 1;
+ params.no_tls_get_addr_opt = 1;
no_opd_opt = 1;
no_toc_opt = 1;
- no_multi_toc = 1;
+ params.no_multi_toc = 1;
no_toc_sort = 1;
- plt_static_chain = 1;
+ params.plt_static_chain = 1;
return FALSE;
'
projects / deliverable / binutils-gdb.git / blobdiff