xtensa: add separate property sections option
It is currently not possible to correctly match .xt.prop information for sections with identical VMA. Allow creation of separate property sections in the BFD. Add assembler option --separate-prop-tables to allow creation of separate property sections. 2018-06-04 Volodymyr Arbatov <arbatov@cadence.com> bfd/ * elf32-xtensa.c (elf32xtensa_separate_props): New global variable. (xtensa_add_names): New function. (xtensa_property_section_name): Add new parameter separate_sections, use it to choose property section name. (xtensa_get_separate_property_section): New function. (xtensa_get_property_section): Invoke xtensa_get_separate_property_section to get individual property section if it exists, common property section otherwise. (xtensa_make_property_section): Pass elf32xtensa_separate_props to xtensa_property_section_name. gas/ * config/tc-xtensa.c (elf32xtensa_separate_props): New declaration. (option_separate_props, option_no_separate_props): New enumeration constants. (md_longopts): Add separate-prop-tables option. (md_parse_option): Add cases for option_separate_props and option_no_separate_props. (md_show_usage): Add help for [no-]separate-prop-tables options.
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Max Filippov
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@ -1,3 +1,17 @@
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2018-06-04 Volodymyr Arbatov <arbatov@cadence.com>
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* elf32-xtensa.c (elf32xtensa_separate_props): New global
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variable.
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(xtensa_add_names): New function.
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(xtensa_property_section_name): Add new parameter
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separate_sections, use it to choose property section name.
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(xtensa_get_separate_property_section): New function.
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(xtensa_get_property_section): Invoke
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xtensa_get_separate_property_section to get individual property
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section if it exists, common property section otherwise.
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(xtensa_make_property_section): Pass elf32xtensa_separate_props
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to xtensa_property_section_name.
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2018-06-04 H.J. Lu <hongjiu.lu@intel.com>
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PR binutils/23146
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@ -154,6 +154,11 @@ static bfd_boolean relaxing_section = FALSE;
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int elf32xtensa_no_literal_movement = 1;
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/* Place property records for a section into individual property section
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with xt.prop. prefix. */
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bfd_boolean elf32xtensa_separate_props = FALSE;
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/* Rename one of the generic section flags to better document how it
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is used here. */
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/* Whether relocations have been processed. */
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@ -10987,10 +10992,30 @@ match_section_group (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf)
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}
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static char *
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xtensa_add_names (const char *base, const char *suffix)
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{
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if (suffix)
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{
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size_t base_len = strlen (base);
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size_t suffix_len = strlen (suffix);
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char *str = bfd_malloc (base_len + suffix_len + 1);
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memcpy (str, base, base_len);
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memcpy (str + base_len, suffix, suffix_len + 1);
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return str;
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}
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else
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{
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return strdup (base);
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}
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}
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static int linkonce_len = sizeof (".gnu.linkonce.") - 1;
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static char *
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xtensa_property_section_name (asection *sec, const char *base_name)
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xtensa_property_section_name (asection *sec, const char *base_name,
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bfd_boolean separate_sections)
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{
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const char *suffix, *group_name;
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char *prop_sec_name;
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@ -11001,11 +11026,7 @@ xtensa_property_section_name (asection *sec, const char *base_name)
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suffix = strrchr (sec->name, '.');
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if (suffix == sec->name)
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suffix = 0;
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prop_sec_name = (char *) bfd_malloc (strlen (base_name) + 1
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+ (suffix ? strlen (suffix) : 0));
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strcpy (prop_sec_name, base_name);
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if (suffix)
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strcat (prop_sec_name, suffix);
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prop_sec_name = xtensa_add_names (base_name, suffix);
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}
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else if (strncmp (sec->name, ".gnu.linkonce.", linkonce_len) == 0)
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{
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@ -11033,19 +11054,24 @@ xtensa_property_section_name (asection *sec, const char *base_name)
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strcat (prop_sec_name + linkonce_len, suffix);
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}
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else
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prop_sec_name = strdup (base_name);
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{
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prop_sec_name = xtensa_add_names (base_name,
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separate_sections ? sec->name : NULL);
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}
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return prop_sec_name;
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}
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static asection *
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xtensa_get_property_section (asection *sec, const char *base_name)
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xtensa_get_separate_property_section (asection *sec, const char *base_name,
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bfd_boolean separate_section)
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{
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char *prop_sec_name;
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asection *prop_sec;
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prop_sec_name = xtensa_property_section_name (sec, base_name);
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prop_sec_name = xtensa_property_section_name (sec, base_name,
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separate_section);
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prop_sec = bfd_get_section_by_name_if (sec->owner, prop_sec_name,
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match_section_group,
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(void *) elf_group_name (sec));
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@ -11053,6 +11079,21 @@ xtensa_get_property_section (asection *sec, const char *base_name)
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return prop_sec;
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}
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static asection *
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xtensa_get_property_section (asection *sec, const char *base_name)
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{
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asection *prop_sec;
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/* Try individual property section first. */
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prop_sec = xtensa_get_separate_property_section (sec, base_name, TRUE);
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/* Refer to a common property section if individual is not present. */
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if (!prop_sec)
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prop_sec = xtensa_get_separate_property_section (sec, base_name, FALSE);
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return prop_sec;
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}
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asection *
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xtensa_make_property_section (asection *sec, const char *base_name)
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@ -11061,7 +11102,8 @@ xtensa_make_property_section (asection *sec, const char *base_name)
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asection *prop_sec;
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/* Check if the section already exists. */
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prop_sec_name = xtensa_property_section_name (sec, base_name);
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prop_sec_name = xtensa_property_section_name (sec, base_name,
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elf32xtensa_separate_props);
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prop_sec = bfd_get_section_by_name_if (sec->owner, prop_sec_name,
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match_section_group,
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(void *) elf_group_name (sec));
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@ -1,3 +1,14 @@
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2018-06-04 Volodymyr Arbatov <arbatov@cadence.com>
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* config/tc-xtensa.c (elf32xtensa_separate_props): New
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declaration.
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(option_separate_props, option_no_separate_props): New
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enumeration constants.
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(md_longopts): Add separate-prop-tables option.
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(md_parse_option): Add cases for option_separate_props and
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option_no_separate_props.
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(md_show_usage): Add help for [no-]separate-prop-tables options.
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2018-06-01 H.J. Lu <hongjiu.lu@intel.com>
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* configure: Regenerated.
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@ -637,6 +637,9 @@ static bfd_boolean enforce_three_byte_loop_align = FALSE;
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static bfd_boolean workaround_all_short_loops = FALSE;
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/* Generate individual property section for every section.
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This option is defined in BDF library. */
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extern bfd_boolean elf32xtensa_separate_props;
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static void
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xtensa_setup_hw_workarounds (int earliest, int latest)
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@ -722,6 +725,9 @@ enum
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option_auto_litpools,
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option_no_auto_litpools,
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option_auto_litpool_limit,
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option_separate_props,
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option_no_separate_props,
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};
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const char *md_shortopts = "";
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@ -801,6 +807,8 @@ struct option md_longopts[] =
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{ "no-auto-litpools", no_argument, NULL, option_no_auto_litpools },
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{ "auto-litpool-limit", required_argument, NULL, option_auto_litpool_limit },
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{ "separate-prop-tables", no_argument, NULL, option_separate_props },
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{ NULL, no_argument, NULL, 0 }
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};
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@ -1021,6 +1029,14 @@ md_parse_option (int c, const char *arg)
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return 1;
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}
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case option_separate_props:
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elf32xtensa_separate_props = TRUE;
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return 1;
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case option_no_separate_props:
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elf32xtensa_separate_props = FALSE;
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return 1;
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default:
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return 0;
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}
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@ -1051,7 +1067,11 @@ Xtensa options:\n\
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--auto-litpool-limit=<value>\n\
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(range 100-10000) Maximum number of blocks of\n\
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instructions to emit between literal pool\n\
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locations; implies --auto-litpools flag\n", stream);
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locations; implies --auto-litpools flag\n\
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--[no-]separate-prop-tables\n\
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[Do not] place Xtensa property records into\n\
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individual property sections for each section.\n\
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Default is to generate single property section.\n", stream);
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}
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