Index: ld.h =================================================================== --- ld.h (revision 329725) +++ ld.h (working copy) @@ -95,6 +95,7 @@ struct wildcard_spec { const char *name; struct name_list *exclude_name_list; sort_type sorted; + struct flag_info *section_flag_list; }; struct wildcard_list { Index: testsuite/ld-scripts/section-flags-1.s =================================================================== --- testsuite/ld-scripts/section-flags-1.s (revision 0) +++ testsuite/ld-scripts/section-flags-1.s (revision 0) @@ -0,0 +1,2 @@ + .text + .space 16 Index: testsuite/ld-scripts/section-flags-1.t =================================================================== --- testsuite/ld-scripts/section-flags-1.t (revision 0) +++ testsuite/ld-scripts/section-flags-1.t (revision 0) @@ -0,0 +1,17 @@ +MEMORY +{ + ram (rwx) : ORIGIN = 0x100000, LENGTH = 144M +} + +SECTIONS +{ + .text : + { + INPUT_SECTION_FLAGS (!SHF_TLS) *(.text .text.* .text_* .gnu.linkonce.t.*) + } >ram + + .text_vle : + { + INPUT_SECTION_FLAGS (SHF_MERGE & SHF_STRINGS & SHF_LINK_ORDER) *(.text .text.* .text_* .gnu.linkonce.t.*) + } >ram +} Index: testsuite/ld-scripts/section-flags.exp =================================================================== --- testsuite/ld-scripts/section-flags.exp (revision 0) +++ testsuite/ld-scripts/section-flags.exp (revision 0) @@ -0,0 +1,45 @@ +# Test SECTION_FLAGS in a linker script. +# +# 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 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# 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., 51 Franklin Street - Fifth Floor, Boston, +# MA 02110-1301, USA. + +set testname "SECTION_FLAGS-1" + +if ![ld_assemble $as $srcdir/$subdir/section-flags-1.s tmpdir/section-flags-1.o] { + unresolved $testname + return +} + +if ![ld_simple_link $ld tmpdir/section-flags-1 "-T $srcdir/$subdir/section-flags-1.t tmpdir/section-flags-1.o"] { + fail $testname + return +} + +pass $testname + +set testname "SECTION_FLAGS-2" +if ![ld_assemble $as $srcdir/$subdir/section-flags-2.s tmpdir/section-flags-2.o] { + unresolved $testname + return +} + +if ![ld_simple_link $ld tmpdir/section-flags-2 "-T $srcdir/$subdir/section-flags-2.t tmpdir/section-flags-1.o tmpdir/section-flags-2.o"] { + fail $testname + return +} + +pass $testname Index: testsuite/ld-scripts/section-flags-2.s =================================================================== --- testsuite/ld-scripts/section-flags-2.s (revision 0) +++ testsuite/ld-scripts/section-flags-2.s (revision 0) @@ -0,0 +1,2 @@ + .text + .space 16 Index: testsuite/ld-scripts/section-flags-2.t =================================================================== --- testsuite/ld-scripts/section-flags-2.t (revision 0) +++ testsuite/ld-scripts/section-flags-2.t (revision 0) @@ -0,0 +1,12 @@ +MEMORY +{ + ram (rwx) : ORIGIN = 0x100000, LENGTH = 144M +} + +SECTIONS +{ + .text : + { + INPUT_SECTION_FLAGS (!SHF_TLS) *(EXCLUDE_FILE (section-flags-1.o) .text .text.* .text_* .gnu.linkonce.t.*) + } >ram +} Index: ldlang.c =================================================================== --- ldlang.c (revision 329725) +++ ldlang.c (working copy) @@ -232,6 +232,9 @@ walk_wild_consider_section (lang_wild_st { struct name_list *list_tmp; + /* Propagate the section_flag_info from the wild statement to the section. */ + s->section_flag_info = ptr->section_flag_list; + /* Don't process sections from files which were excluded. */ for (list_tmp = sec->spec.exclude_name_list; list_tmp; @@ -2186,8 +2189,11 @@ lang_add_section (lang_statement_list_ty lang_output_section_statement_type *output) { flagword flags = section->flags; + struct flag_info *sflag_info = section->section_flag_info; + bfd_boolean discard; lang_input_section_type *new_section; + bfd *abfd = link_info.output_bfd; /* Discard sections marked with SEC_EXCLUDE. */ discard = (flags & SEC_EXCLUDE) != 0; @@ -2213,6 +2219,21 @@ lang_add_section (lang_statement_list_ty return; } + if (sflag_info) + { + if (sflag_info->flags_initialized == FALSE) + bfd_lookup_section_flags (&link_info, sflag_info); + + if (sflag_info->only_with_flags != 0 + && (sflag_info->only_with_flags & flags) + != sflag_info->only_with_flags) + return; + + if (sflag_info->not_with_flags != 0 + && (sflag_info->not_with_flags & flags) != 0) + return; + } + if (section->output_section != NULL) return; @@ -6455,6 +6476,7 @@ lang_add_wild (struct wildcard_spec *fil { new_stmt->filename = filespec->name; new_stmt->filenames_sorted = filespec->sorted == by_name; + new_stmt->section_flag_list = filespec->section_flag_list; } new_stmt->section_list = section_list; new_stmt->keep_sections = keep_sections; Index: ldlang.h =================================================================== --- ldlang.h (revision 329725) +++ ldlang.h (working copy) @@ -157,6 +157,7 @@ typedef struct lang_output_section_state int section_alignment; /* Alignment of start of section. */ int constraint; flagword flags; + flag_info *sectflags; enum section_type sectype; unsigned int processed_vma : 1; unsigned int processed_lma : 1; @@ -240,6 +241,8 @@ typedef struct lang_input_statement_stru bfd *the_bfd; + struct flag_info *section_flag_list; + /* Point to the next file - whatever it is, wanders up and down archives */ union lang_statement_union *next; @@ -328,6 +331,7 @@ struct lang_wild_statement_struct walk_wild_section_handler_t walk_wild_section_handler; struct wildcard_list *handler_data[4]; lang_section_bst_type *tree; + struct flag_info *section_flag_list; }; typedef struct lang_address_statement_struct Index: ldlex.l =================================================================== --- ldlex.l (revision 329725) +++ ldlex.l (working copy) @@ -309,6 +309,7 @@ V_IDENTIFIER [*?.$_a-zA-Z\[\]\-\!\^\\]([ "org" { RTOKEN(ORIGIN);} "l" { RTOKEN( LENGTH);} "len" { RTOKEN( LENGTH);} +"INPUT_SECTION_FLAGS" { RTOKEN(INPUT_SECTION_FLAGS); } "INCLUDE" { RTOKEN(INCLUDE);} "PHDRS" { RTOKEN (PHDRS); } "AT" { RTOKEN(AT);} Index: ldgram.y =================================================================== --- ldgram.y (revision 329732) +++ ldgram.y (working copy) @@ -72,6 +72,8 @@ static int error_index; struct wildcard_spec wildcard; struct wildcard_list *wildcard_list; struct name_list *name_list; + struct flag_info_list *flag_info_list; + struct flag_info *flag_info; int token; union etree_union *etree; struct phdr_info @@ -93,6 +95,8 @@ static int error_index; %type fill_opt fill_exp %type exclude_name_list %type file_NAME_list +%type sect_flag_list +%type sect_flags %type memspec_opt casesymlist %type memspec_at_opt %type wildcard_name @@ -148,7 +152,7 @@ static int error_index; %token INPUT_SCRIPT INPUT_MRI_SCRIPT INPUT_DEFSYM CASE EXTERN START %token VERS_TAG VERS_IDENTIFIER %token GLOBAL LOCAL VERSIONK INPUT_VERSION_SCRIPT -%token KEEP ONLY_IF_RO ONLY_IF_RW SPECIAL +%token KEEP ONLY_IF_RO ONLY_IF_RW SPECIAL INPUT_SECTION_FLAGS %token EXCLUDE_FILE %token CONSTANT %type vers_defns @@ -433,54 +437,114 @@ wildcard_spec: $$.name = $1; $$.sorted = none; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name { $$.name = $5; $$.sorted = none; $$.exclude_name_list = $3; + $$.section_flag_list = NULL; } | SORT_BY_NAME '(' wildcard_name ')' { $$.name = $3; $$.sorted = by_name; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_ALIGNMENT '(' wildcard_name ')' { $$.name = $3; $$.sorted = by_alignment; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_NAME '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_name_alignment; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_NAME '(' SORT_BY_NAME '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_name; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_ALIGNMENT '(' SORT_BY_NAME '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_alignment_name; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_ALIGNMENT '(' SORT_BY_ALIGNMENT '(' wildcard_name ')' ')' { $$.name = $5; $$.sorted = by_alignment; $$.exclude_name_list = NULL; + $$.section_flag_list = NULL; } | SORT_BY_NAME '(' EXCLUDE_FILE '(' exclude_name_list ')' wildcard_name ')' { $$.name = $7; $$.sorted = by_name; $$.exclude_name_list = $5; + $$.section_flag_list = NULL; + } + ; + +sect_flag_list: NAME + { + struct flag_info_list *n; + n = ((struct flag_info_list *) xmalloc (sizeof *n)); + if ($1[0] == '!') + { + n->with = without_flags; + n->name = &$1[1]; + } + else + { + n->with = with_flags; + n->name = $1; + } + n->valid = FALSE; + n->next = NULL; + $$ = n; + } + | sect_flag_list '&' NAME + { + struct flag_info_list *n; + n = ((struct flag_info_list *) xmalloc (sizeof *n)); + if ($3[0] == '!') + { + n->with = without_flags; + n->name = &$3[1]; + } + else + { + n->with = with_flags; + n->name = $3; + } + n->valid = FALSE; + n->next = $1; + $$ = n; + } + ; + +sect_flags: + INPUT_SECTION_FLAGS '(' sect_flag_list ')' + { + struct flag_info *n; + n = ((struct flag_info *) xmalloc (sizeof *n)); + n->flag_list = $3; + n->flags_initialized = FALSE; + n->not_with_flags = 0; + n->only_with_flags = 0; + $$ = n; } ; @@ -533,14 +597,37 @@ input_section_spec_no_keep: tmp.sorted = none; lang_add_wild (&tmp, NULL, ldgram_had_keep); } + | sect_flags NAME + { + struct wildcard_spec tmp; + tmp.name = $2; + tmp.exclude_name_list = NULL; + tmp.sorted = none; + tmp.section_flag_list = $1; + lang_add_wild (&tmp, NULL, ldgram_had_keep); + } | '[' file_NAME_list ']' { lang_add_wild (NULL, $2, ldgram_had_keep); } + | sect_flags '[' file_NAME_list ']' + { + struct wildcard_spec tmp; + tmp.name = NULL; + tmp.exclude_name_list = NULL; + tmp.sorted = none; + tmp.section_flag_list = $1; + lang_add_wild (NULL, $3, ldgram_had_keep); + } | wildcard_spec '(' file_NAME_list ')' { lang_add_wild (&$1, $3, ldgram_had_keep); } + | sect_flags wildcard_spec '(' file_NAME_list ')' + { + $2.section_flag_list = $1; + lang_add_wild (&$2, $4, ldgram_had_keep); + } ; input_section_spec: Index: ld.texinfo =================================================================== --- ld.texinfo (revision 329725) +++ ld.texinfo (working copy) @@ -3802,6 +3802,26 @@ needs to be at a particular location in data.o(.data) @end smallexample +To refine the sections that are included based on the section flags +of an input section, INPUT_SECTION_FLAGS may be used. + +Here is a simple example for using Section header flags for ELF sections: + +@smallexample +@group +SECTIONS @{ + .text : @{ INPUT_SECTION_FLAGS (SHF_MERGE & SHF_STRINGS) *(.text) @} + .text2 : @{ INPUT_SECTION_FLAGS (!SHF_WRITE) *(.text) @} +@} +@end group +@end smallexample + +In this example, the output section @samp{.text} will be comprised of any +input section matching the name *(.text) whose section header flags +@code{SHF_MERGE} and @code{SHF_STRINGS} are set. The output section +@samp{.text2} will be comprised of any input section matching the name *(.text) +whose section header flag @code{SHF_WRITE} is clear. + You can also specify files within archives by writing a pattern matching the archive, a colon, then the pattern matching the file, with no whitespace around the colon.