bfd/ChangeLog
* coffgen.c (make_a_section_from_file): Set the backend long section names enable if long section names found on input. * coffcode.h: Extend long section names documentation to match. binutils/ChangeLog * objcopy.c (enum long_section_name_handling): New enum type. (enum command_line_switch): Add OPTION_LONG_SECTION_NAMES. (copy_options[]): Add entry for --long-section-names option. (copy_usage): Document it. (set_long_section_mode): New subroutine. (copy_file): Call it. (copy_main): Accept OPTION_LONG_SECTION_NAMES and parse arg. * doc/binutils.texi: Update objcopy documentation with details of new option.
This commit is contained in:
Dave Korn
parent
c38b10fa10
commit
0408dee693
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@ -1,3 +1,9 @@
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2009-04-14 Dave Korn <dave.korn.cygwin@gmail.com>
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* coffgen.c (make_a_section_from_file): Set the backend long
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section names enable if long section names found on input.
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* coffcode.h: Extend long section names documentation to match.
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2009-04-08 H.J. Lu <hongjiu.lu@intel.com>
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* elflink.c (elf_link_add_object_symbols): Warn alternate ELF
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@ -153,6 +153,14 @@ SUBSUBSECTION
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points to a function that allows the value of the flag to be altered
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at runtime, on formats that support long section names at all; on
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other formats it points to a stub that returns an error indication.
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With input BFDs, the flag is set according to whether any long section
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names are detected while reading the section headers. For a completely
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new BFD, the flag is set to the default for the target format. This
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information can be used by a client of the BFD library when deciding
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what output format to generate, and means that a BFD that is opened
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for read and subsequently converted to a writeable BFD and modified
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in-place will retain whatever format it had on input.
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If @code{COFF_LONG_SECTION_NAMES} is simply defined (blank), or is
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defined to the value "1", then long section names are enabled by
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@ -73,6 +73,11 @@ make_a_section_from_file (bfd *abfd,
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char *p;
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const char *strings;
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/* Flag that this BFD uses long names, even though the format might
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expect them to be off by default. This won't directly affect the
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format of any output BFD created from this one, but the information
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can be used to decide what to do. */
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bfd_coff_set_long_section_names (abfd, TRUE);
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memcpy (buf, hdr->s_name + 1, SCNNMLEN - 1);
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buf[SCNNMLEN - 1] = '\0';
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strindex = strtol (buf, &p, 10);
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@ -1,3 +1,15 @@
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2009-04-14 Dave Korn <dave.korn.cygwin@gmail.com>
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* objcopy.c (enum long_section_name_handling): New enum type.
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(enum command_line_switch): Add OPTION_LONG_SECTION_NAMES.
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(copy_options[]): Add entry for --long-section-names option.
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(copy_usage): Document it.
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(set_long_section_mode): New subroutine.
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(copy_file): Call it.
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(copy_main): Accept OPTION_LONG_SECTION_NAMES and parse arg.
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* doc/binutils.texi: Update objcopy documentation with details
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of new option.
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2009-04-01 Dave Korn <dave.korn.cygwin@gmail.com>
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* dlltool.c (set_dll_name_from_def): Accept new second arg that
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@ -1001,6 +1001,7 @@ objcopy [@option{-F} @var{bfdname}|@option{--target=}@var{bfdname}]
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[@option{--set-section-flags} @var{section}=@var{flags}]
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[@option{--add-section} @var{sectionname}=@var{filename}]
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[@option{--rename-section} @var{oldname}=@var{newname}[,@var{flags}]]
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[@option{--long-section-names} @{enable,disable,keep@}]
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[@option{--change-leading-char}] [@option{--remove-leading-char}]
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[@option{--reverse-bytes=}@var{num}]
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[@option{--srec-len=}@var{ival}] [@option{--srec-forceS3}]
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@ -1338,6 +1339,18 @@ data you could use the following command line to achieve it:
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<input_binary_file> <output_object_file>
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@end smallexample
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@item --long-section-names @{enable,disable,keep@}
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Controls the handling of long section names when processing @code{COFF}
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and @code{PE-COFF} object formats. The default behaviour, @samp{keep},
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is to preserve long section names if any are present in the input file.
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The @samp{enable} and @samp{disable} options forcibly enable or disable
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the use of long section names in the output object; when @samp{disable}
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is in effect, any long section names in the input object will be truncated.
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The @samp{enable} option will only emit long section names if any are
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present in the inputs; this is mostly the same as @samp{keep}, but it
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is left undefined whether the @samp{enable} option might force the
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creation of an empty string table in the output file.
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@item --change-leading-char
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Some object file formats use special characters at the start of
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symbols. The most common such character is underscore, which compilers
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@ -32,6 +32,8 @@
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#include "elf-bfd.h"
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#include <sys/stat.h>
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#include "libbfd.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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struct is_specified_symbol_predicate_data
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{
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@ -216,6 +218,18 @@ static bfd_boolean extract_symbol = FALSE;
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of <reverse_bytes> bytes within each output section. */
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static int reverse_bytes = 0;
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/* For Coff objects, we may want to allow or disallow long section names,
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or preserve them where found in the inputs. Debug info relies on them. */
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enum long_section_name_handling
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{
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DISABLE,
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ENABLE,
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KEEP
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};
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/* The default long section handling mode is to preserve them.
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This is also the only behaviour for 'strip'. */
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static enum long_section_name_handling long_section_names = KEEP;
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/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
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enum command_line_switch
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@ -247,6 +261,7 @@ enum command_line_switch
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OPTION_KEEP_SYMBOLS,
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OPTION_LOCALIZE_HIDDEN,
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OPTION_LOCALIZE_SYMBOLS,
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OPTION_LONG_SECTION_NAMES,
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OPTION_GLOBALIZE_SYMBOL,
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OPTION_GLOBALIZE_SYMBOLS,
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OPTION_KEEPGLOBAL_SYMBOLS,
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@ -340,6 +355,7 @@ static struct option copy_options[] =
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{"localize-hidden", no_argument, 0, OPTION_LOCALIZE_HIDDEN},
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{"localize-symbol", required_argument, 0, 'L'},
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{"localize-symbols", required_argument, 0, OPTION_LOCALIZE_SYMBOLS},
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{"long-section-names", required_argument, 0, OPTION_LONG_SECTION_NAMES},
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{"no-adjust-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
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{"no-change-warnings", no_argument, 0, OPTION_NO_CHANGE_WARNINGS},
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{"only-keep-debug", no_argument, 0, OPTION_ONLY_KEEP_DEBUG},
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@ -470,6 +486,8 @@ copy_usage (FILE *stream, int exit_status)
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Set section <name>'s properties to <flags>\n\
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--add-section <name>=<file> Add section <name> found in <file> to output\n\
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--rename-section <old>=<new>[,<flags>] Rename section <old> to <new>\n\
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--long-section-names {enable|disable|keep}\n\
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Handle long section names in Coff objects.\n\
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--change-leading-char Force output format's leading character style\n\
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--remove-leading-char Remove leading character from global symbols\n\
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--reverse-bytes=<num> Reverse <num> bytes at a time, in output sections with content\n\
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@ -2025,6 +2043,18 @@ copy_unknown_element:
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rmdir (dir);
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}
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static void
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set_long_section_mode (bfd *output_bfd, bfd *input_bfd, enum long_section_name_handling style)
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{
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/* This is only relevant to Coff targets. */
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if (bfd_get_flavour (output_bfd) == bfd_target_coff_flavour)
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{
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if (style == KEEP)
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style = bfd_coff_long_section_names (input_bfd) ? ENABLE : DISABLE;
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bfd_coff_set_long_section_names (output_bfd, style != DISABLE);
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}
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}
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/* The top-level control. */
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static void
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@ -2073,6 +2103,8 @@ copy_file (const char *input_filename, const char *output_filename,
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status = 1;
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return;
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}
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/* This is a no-op on non-Coff targets. */
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set_long_section_mode (obfd, ibfd, long_section_names);
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copy_archive (ibfd, obfd, output_target, force_output_target);
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}
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@ -2093,6 +2125,8 @@ copy_file (const char *input_filename, const char *output_filename,
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status = 1;
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return;
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}
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/* This is a no-op on non-Coff targets. */
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set_long_section_mode (obfd, ibfd, long_section_names);
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if (! copy_object (ibfd, obfd))
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status = 1;
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@ -3353,6 +3387,17 @@ copy_main (int argc, char *argv[])
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add_specific_symbols (optarg, localize_specific_htab);
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break;
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case OPTION_LONG_SECTION_NAMES:
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if (!strcmp ("enable", optarg))
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long_section_names = ENABLE;
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else if (!strcmp ("disable", optarg))
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long_section_names = DISABLE;
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else if (!strcmp ("keep", optarg))
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long_section_names = KEEP;
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else
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fatal (_("unknown long section names option '%s'"), optarg);
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break;
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case OPTION_GLOBALIZE_SYMBOLS:
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add_specific_symbols (optarg, globalize_specific_htab);
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break;
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