# 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) 2002-2017 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
fragment <<EOF
#include "ldctor.h"
-#include "libbfd.h"
#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,
+ 1, -1, 0,
${DEFAULT_PLT_STATIC_CHAIN-0}, -1, 0,
- 0, -1};
+ 0, -1, -1, 0};
/* Fake input file for stubs. */
static lang_input_statement_type *stub_file;
-static int stub_added = 0;
/* Whether we need to call ppc_layout_sections_again. */
static int need_laying_out = 0;
/* Whether to sort input toc and got sections. */
static int no_toc_sort = 0;
-/* Set if individual PLT call stubs should be aligned. */
-static int plt_stub_align = 0;
-
+/* Input .toc sections will be placed in this output section. */
+static const char *toc_section_name = ".got";
static asection *toc_section = 0;
/* This is called before the input files are opened. We create a new
stub_file->the_bfd->flags |= BFD_LINKER_CREATED;
ldlang_add_file (stub_file);
params.stub_bfd = stub_file->the_bfd;
+ if (params.save_restore_funcs < 0)
+ params.save_restore_funcs = !bfd_link_relocatable (&link_info);
if (!ppc64_elf_init_stub_bfd (&link_info, ¶ms))
einfo ("%F%P: can not init BFD: %E\n");
}
+/* Called after opening files but before mapping sections. */
+
+static void
+ppc_after_open (void)
+{
+ if (stub_file != NULL && link_info.relro && params.object_in_toc)
+ {
+ /* We have a .toc section that might be written to at run time.
+ Don't put .toc into the .got output section. */
+ lang_output_section_statement_type *got;
+
+ got = lang_output_section_find (".got");
+ if (got != NULL)
+ {
+ lang_statement_union_type *s;
+ for (s = got->children.head; s != NULL; s = s->header.next)
+ if (s->header.type == lang_wild_statement_enum
+ && s->wild_statement.filename == NULL)
+ {
+ struct wildcard_list **i = &s->wild_statement.section_list;
+ while (*i != NULL)
+ if (strcmp ((*i)->spec.name, ".toc") == 0)
+ *i = (*i)->next;
+ else
+ i = &(*i)->next;
+ }
+ /* Instead, .toc input sections will be mapped to the
+ read/write .toc output section. If user scripts don't
+ provide one then we'll lose toc sorting and multi-toc. */
+ toc_section_name = ".toc";
+ }
+ }
+ gld${EMULATION_NAME}_after_open ();
+}
+
/* Move the input section statement at *U which happens to be on LIST
to be just before *TO. */
}
if (!no_toc_opt
- && !link_info.relocatable)
+ && !bfd_link_relocatable (&link_info))
{
prelim_size_sections ();
{
lang_output_section_statement_type *toc_os;
- toc_os = lang_output_section_find (".got");
+ toc_os = lang_output_section_find (toc_section_name);
if (toc_os != NULL)
sort_toc_sections (&toc_os->children, NULL, NULL);
}
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;
if (info.add.head == NULL)
goto err_ret;
- stub_added = 1;
if (hook_in_stub (&info, &os->children.head))
return stub_sec;
add even more stubs. */
gld${EMULATION_NAME}_map_segments (TRUE);
- if (!link_info.relocatable)
+ if (!bfd_link_relocatable (&link_info))
ppc64_elf_set_toc (&link_info, link_info.output_bfd);
need_laying_out = -1;
static void
gld${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)
+ if (stub_file != NULL && !bfd_link_relocatable (&link_info))
{
- int ret = ppc64_elf_setup_section_lists (&link_info);
+ 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 (!params.no_multi_toc)
{
toc_section = bfd_get_section_by_name (link_info.output_bfd,
- ".got");
+ toc_section_name);
if (toc_section != NULL)
lang_for_each_statement (build_toc_list);
}
}
}
- if (need_laying_out != -1)
+ /* 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)
{
- gld${EMULATION_NAME}_map_segments (need_laying_out);
-
- if (!link_info.relocatable)
- ppc64_elf_set_toc (&link_info, link_info.output_bfd);
+ einfo ("%X%P: .eh_frame/.stab edit: %E\n");
+ return;
}
+ else if (ret > 0)
+ need_laying_out = 1;
+
+ /* Call map_segments regardless of the state of need_laying_out.
+ need_laying_out set to -1 means we have just laid everything out,
+ but ppc64_elf_size_stubs strips .branch_lt and .eh_frame if
+ unneeded, after ppc_layout_sections_again. Another call removes
+ these sections from the segment map. Their presence is
+ innocuous except for confusing ELF_SECTION_IN_SEGMENT. */
+ gld${EMULATION_NAME}_map_segments (need_laying_out > 0);
+
+ if (need_laying_out != -1 && !bfd_link_relocatable (&link_info))
+ ppc64_elf_set_toc (&link_info, link_info.output_bfd);
}
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
+ && !bfd_link_relocatable (&link_info)
+ && !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 (params.emit_stub_syms < 0)
- params.emit_stub_syms = 1;
- if (!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)
- {
- 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)
+#define OPTION_TLS_GET_ADDR_OPT (OPTION_NO_TLS_OPT + 1)
+#define OPTION_NO_TLS_GET_ADDR_OPT (OPTION_TLS_GET_ADDR_OPT + 1)
#define OPTION_NO_OPD_OPT (OPTION_NO_TLS_GET_ADDR_OPT + 1)
#define OPTION_NO_TOC_OPT (OPTION_NO_OPD_OPT + 1)
#define OPTION_NO_MULTI_TOC (OPTION_NO_TOC_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 },
+ { "tls-get-addr-optimize", no_argument, NULL, OPTION_TLS_GET_ADDR_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-toc-optimize", no_argument, NULL, OPTION_NO_TOC_OPT },
choose suitable defaults.\n"
));
fprintf (file, _("\
- --plt-static-chain PLT call stubs should load r11.${DEFAULT_PLT_STATIC_CHAIN- (default)}\n"
+ --plt-static-chain PLT call stubs should load r11.'${DEFAULT_PLT_STATIC_CHAIN- (default)}'\n"
));
fprintf (file, _("\
- --no-plt-static-chain PLT call stubs should not load r11.${DEFAULT_PLT_STATIC_CHAIN+ (default)}\n"
+ --no-plt-static-chain PLT call stubs should not load r11.'${DEFAULT_PLT_STATIC_CHAIN+ (default)}'\n"
));
fprintf (file, _("\
--plt-thread-safe PLT call stubs with load-load barrier.\n"
--no-dotsyms Don'\''t do anything special in version scripts.\n"
));
fprintf (file, _("\
+ --save-restore-funcs Provide register save and restore routines used\n\
+ by gcc -Os code. Defaults to on for normal\n\
+ final link, off for ld -r.\n"
+ ));
+ fprintf (file, _("\
+ --no-save-restore-funcs Don'\''t provide these routines.\n"
+ ));
+ fprintf (file, _("\
--no-tls-optimize Don'\''t try to optimize TLS accesses.\n"
));
fprintf (file, _("\
+ --tls-get-addr-optimize Force use of special __tls_get_addr call.\n"
+ ));
+ fprintf (file, _("\
--no-tls-get-addr-optimize Don'\''t use a special __tls_get_addr call.\n"
));
fprintf (file, _("\
unsigned long val = strtoul (optarg, &end, 0);
if (*end || val > 8)
einfo (_("%P%F: invalid --plt-align `%s'\''\n"), optarg);
- plt_stub_align = val;
+ params.plt_stub_align = val;
}
else
- plt_stub_align = 5;
+ params.plt_stub_align = 5;
break;
case OPTION_NO_PLT_ALIGN:
- plt_stub_align = 0;
+ params.plt_stub_align = 0;
break;
case OPTION_STUBSYMS:
dotsyms = 0;
break;
+ case OPTION_SAVRES:
+ params.save_restore_funcs = 1;
+ break;
+
+ case OPTION_NO_SAVRES:
+ params.save_restore_funcs = 0;
+ break;
+
case OPTION_NO_TLS_OPT:
no_tls_opt = 1;
break;
+ case OPTION_TLS_GET_ADDR_OPT:
+ params.tls_get_addr_opt = 1;
+ break;
+
case OPTION_NO_TLS_GET_ADDR_OPT:
- params.no_tls_get_addr_opt = 1;
+ params.tls_get_addr_opt = 0;
break;
case OPTION_NO_OPD_OPT:
case OPTION_TRADITIONAL_FORMAT:
no_tls_opt = 1;
- params.no_tls_get_addr_opt = 1;
+ params.tls_get_addr_opt = 0;
no_opd_opt = 1;
no_toc_opt = 1;
params.no_multi_toc = 1;
# Put these extra ppc64elf routines in ld_${EMULATION_NAME}_emulation
#
+LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern
+LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
+LDEMUL_AFTER_OPEN=ppc_after_open
LDEMUL_BEFORE_ALLOCATION=ppc_before_allocation
LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
LDEMUL_FINISH=gld${EMULATION_NAME}_finish
-LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=ppc_create_output_section_statements
-LDEMUL_NEW_VERS_PATTERN=gld${EMULATION_NAME}_new_vers_pattern
projects / binutils-gdb.git / blobdiff