RISC-V: Enable lui relaxation for CODE and MERGE sections.

[deliverable/binutils-gdb.git] / bfd / section.c

diff --git a/bfd/section.c b/bfd/section.c
index 5a335a62909ad67754c3d6c6763302b5bf2f01a2..64636334ac9316e31894fa2abf5218091f2253d5 100644 (file)
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -1,7 +1,5 @@
 /* Object file "section" support for the BFD library.
 /* Object file "section" support for the BFD library.

-   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-   Free Software Foundation, Inc.
+   Copyright (C) 1990-2019 Free Software Foundation, Inc.

    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.


@@ -67,10 +65,7 @@ SUBSECTION
        data in place until a <<bfd_get_section_contents>> call is
        made. Other back ends may read in all the data at once.  For
        example, an S-record file has to be read once to determine the
        data in place until a <<bfd_get_section_contents>> call is
        made. Other back ends may read in all the data at once.  For
        example, an S-record file has to be read once to determine the

-       size of the data. An IEEE-695 file doesn't contain raw data in
-       sections, but data and relocation expressions intermixed, so
-       the data area has to be parsed to get out the data and
-       relocations.
+       size of the data.

 
 INODE
 Section Output, typedef asection, Section Input, Sections
 
 INODE
 Section Output, typedef asection, Section Input, Sections


@@ -157,10 +152,10 @@ CODE_FRAGMENT
 .  const char *name;
 .
 .  {* A unique sequence number.  *}
 .  const char *name;
 .
 .  {* A unique sequence number.  *}

-.  int id;
+.  unsigned int id;

 .
 .  {* Which section in the bfd; 0..n-1 as sections are created in a bfd.  *}
 .
 .  {* Which section in the bfd; 0..n-1 as sections are created in a bfd.  *}

-.  int index;
+.  unsigned int index;

 .
 .  {* The next section in the list belonging to the BFD, or NULL.  *}
 .  struct bfd_section *next;
 .
 .  {* The next section in the list belonging to the BFD, or NULL.  *}
 .  struct bfd_section *next;


@@ -173,31 +168,31 @@ CODE_FRAGMENT
 .     synthesized from other information.  *}
 .  flagword flags;
 .
 .     synthesized from other information.  *}
 .  flagword flags;
 .

-.#define SEC_NO_FLAGS   0x000
+.#define SEC_NO_FLAGS                      0x0

 .
 .  {* Tells the OS to allocate space for this section when loading.
 .     This is clear for a section containing debug information only.  *}
 .
 .  {* Tells the OS to allocate space for this section when loading.
 .     This is clear for a section containing debug information only.  *}

-.#define SEC_ALLOC      0x001
+.#define SEC_ALLOC                         0x1

 .
 .  {* Tells the OS to load the section from the file when loading.
 .     This is clear for a .bss section.  *}
 .
 .  {* Tells the OS to load the section from the file when loading.
 .     This is clear for a .bss section.  *}

-.#define SEC_LOAD       0x002
+.#define SEC_LOAD                          0x2

 .
 .  {* The section contains data still to be relocated, so there is
 .     some relocation information too.  *}
 .
 .  {* The section contains data still to be relocated, so there is
 .     some relocation information too.  *}

-.#define SEC_RELOC      0x004
+.#define SEC_RELOC                         0x4

 .
 .  {* A signal to the OS that the section contains read only data.  *}
 .
 .  {* A signal to the OS that the section contains read only data.  *}

-.#define SEC_READONLY   0x008
+.#define SEC_READONLY                      0x8

 .
 .  {* The section contains code only.  *}
 .
 .  {* The section contains code only.  *}

-.#define SEC_CODE       0x010
+.#define SEC_CODE                         0x10

 .
 .  {* The section contains data only.  *}
 .
 .  {* The section contains data only.  *}

-.#define SEC_DATA       0x020
+.#define SEC_DATA                         0x20

 .
 .  {* The section will reside in ROM.  *}
 .
 .  {* The section will reside in ROM.  *}

-.#define SEC_ROM        0x040
+.#define SEC_ROM                          0x40

 .
 .  {* The section contains constructor information. This section
 .     type is used by the linker to create lists of constructors and
 .
 .  {* The section contains constructor information. This section
 .     type is used by the linker to create lists of constructors and


@@ -209,75 +204,72 @@ CODE_FRAGMENT
 .     sections called <<__CTOR_LIST__>> and relocate the data
 .     contained within - exactly the operations it would peform on
 .     standard data.  *}
 .     sections called <<__CTOR_LIST__>> and relocate the data
 .     contained within - exactly the operations it would peform on
 .     standard data.  *}

-.#define SEC_CONSTRUCTOR 0x080
+.#define SEC_CONSTRUCTOR                  0x80

 .
 .  {* The section has contents - a data section could be
 .     <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
 .     <<SEC_HAS_CONTENTS>>  *}
 .
 .  {* The section has contents - a data section could be
 .     <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
 .     <<SEC_HAS_CONTENTS>>  *}

-.#define SEC_HAS_CONTENTS 0x100
+.#define SEC_HAS_CONTENTS                0x100

 .
 .  {* An instruction to the linker to not output the section
 .     even if it has information which would normally be written.  *}
 .
 .  {* An instruction to the linker to not output the section
 .     even if it has information which would normally be written.  *}

-.#define SEC_NEVER_LOAD 0x200
+.#define SEC_NEVER_LOAD                  0x200

 .
 .  {* The section contains thread local data.  *}
 .
 .  {* The section contains thread local data.  *}

-.#define SEC_THREAD_LOCAL 0x400
+.#define SEC_THREAD_LOCAL                0x400

 .
 .

-.  {* The section has GOT references.  This flag is only for the
-.     linker, and is currently only used by the elf32-hppa back end.
-.     It will be set if global offset table references were detected
-.     in this section, which indicate to the linker that the section
-.     contains PIC code, and must be handled specially when doing a
-.     static link.  *}
-.#define SEC_HAS_GOT_REF 0x800
+.  {* The section's size is fixed.  Generic linker code will not
+.     recalculate it and it is up to whoever has set this flag to
+.     get the size right.  *}
+.#define SEC_FIXED_SIZE                  0x800

 .
 .  {* The section contains common symbols (symbols may be defined
 .     multiple times, the value of a symbol is the amount of
 .     space it requires, and the largest symbol value is the one
 .     used).  Most targets have exactly one of these (which we
 .     translate to bfd_com_section_ptr), but ECOFF has two.  *}
 .
 .  {* The section contains common symbols (symbols may be defined
 .     multiple times, the value of a symbol is the amount of
 .     space it requires, and the largest symbol value is the one
 .     used).  Most targets have exactly one of these (which we
 .     translate to bfd_com_section_ptr), but ECOFF has two.  *}

-.#define SEC_IS_COMMON 0x1000
+.#define SEC_IS_COMMON                  0x1000

 .
 .  {* The section contains only debugging information.  For
 .     example, this is set for ELF .debug and .stab sections.
 .     strip tests this flag to see if a section can be
 .     discarded.  *}
 .
 .  {* The section contains only debugging information.  For
 .     example, this is set for ELF .debug and .stab sections.
 .     strip tests this flag to see if a section can be
 .     discarded.  *}

-.#define SEC_DEBUGGING 0x2000
+.#define SEC_DEBUGGING                  0x2000

 .
 .  {* The contents of this section are held in memory pointed to
 .     by the contents field.  This is checked by bfd_get_section_contents,
 .     and the data is retrieved from memory if appropriate.  *}
 .
 .  {* The contents of this section are held in memory pointed to
 .     by the contents field.  This is checked by bfd_get_section_contents,
 .     and the data is retrieved from memory if appropriate.  *}

-.#define SEC_IN_MEMORY 0x4000
+.#define SEC_IN_MEMORY                  0x4000

 .
 .  {* The contents of this section are to be excluded by the
 .     linker for executable and shared objects unless those
 .     objects are to be further relocated.  *}
 .
 .  {* The contents of this section are to be excluded by the
 .     linker for executable and shared objects unless those
 .     objects are to be further relocated.  *}

-.#define SEC_EXCLUDE 0x8000
+.#define SEC_EXCLUDE                    0x8000

 .
 .  {* The contents of this section are to be sorted based on the sum of
 .     the symbol and addend values specified by the associated relocation
 .     entries.  Entries without associated relocation entries will be
 .     appended to the end of the section in an unspecified order.  *}
 .
 .  {* The contents of this section are to be sorted based on the sum of
 .     the symbol and addend values specified by the associated relocation
 .     entries.  Entries without associated relocation entries will be
 .     appended to the end of the section in an unspecified order.  *}

-.#define SEC_SORT_ENTRIES 0x10000
+.#define SEC_SORT_ENTRIES              0x10000

 .
 .  {* When linking, duplicate sections of the same name should be
 .     discarded, rather than being combined into a single section as
 .     is usually done.  This is similar to how common symbols are
 .     handled.  See SEC_LINK_DUPLICATES below.  *}
 .
 .  {* When linking, duplicate sections of the same name should be
 .     discarded, rather than being combined into a single section as
 .     is usually done.  This is similar to how common symbols are
 .     handled.  See SEC_LINK_DUPLICATES below.  *}

-.#define SEC_LINK_ONCE 0x20000
+.#define SEC_LINK_ONCE                 0x20000

 .
 .  {* If SEC_LINK_ONCE is set, this bitfield describes how the linker
 .     should handle duplicate sections.  *}
 .
 .  {* If SEC_LINK_ONCE is set, this bitfield describes how the linker
 .     should handle duplicate sections.  *}

-.#define SEC_LINK_DUPLICATES 0xc0000
+.#define SEC_LINK_DUPLICATES           0xc0000

 .
 .  {* This value for SEC_LINK_DUPLICATES means that duplicate
 .     sections with the same name should simply be discarded.  *}
 .
 .  {* This value for SEC_LINK_DUPLICATES means that duplicate
 .     sections with the same name should simply be discarded.  *}

-.#define SEC_LINK_DUPLICATES_DISCARD 0x0
+.#define SEC_LINK_DUPLICATES_DISCARD       0x0

 .
 .  {* This value for SEC_LINK_DUPLICATES means that the linker
 .     should warn if there are any duplicate sections, although
 .     it should still only link one copy.  *}
 .
 .  {* This value for SEC_LINK_DUPLICATES means that the linker
 .     should warn if there are any duplicate sections, although
 .     it should still only link one copy.  *}

-.#define SEC_LINK_DUPLICATES_ONE_ONLY 0x40000
+.#define SEC_LINK_DUPLICATES_ONE_ONLY  0x40000

 .
 .  {* This value for SEC_LINK_DUPLICATES means that the linker
 .     should warn if any duplicate sections are a different size.  *}
 .
 .  {* This value for SEC_LINK_DUPLICATES means that the linker
 .     should warn if any duplicate sections are a different size.  *}


@@ -293,28 +285,28 @@ CODE_FRAGMENT
 .     relocation or other arcane processing.  It is skipped when
 .     going through the first-pass output, trusting that someone
 .     else up the line will take care of it later.  *}
 .     relocation or other arcane processing.  It is skipped when
 .     going through the first-pass output, trusting that someone
 .     else up the line will take care of it later.  *}

-.#define SEC_LINKER_CREATED 0x100000
+.#define SEC_LINKER_CREATED           0x100000

 .
 .  {* This section should not be subject to garbage collection.
 .     Also set to inform the linker that this section should not be
 .     listed in the link map as discarded.  *}
 .
 .  {* This section should not be subject to garbage collection.
 .     Also set to inform the linker that this section should not be
 .     listed in the link map as discarded.  *}

-.#define SEC_KEEP 0x200000
+.#define SEC_KEEP                     0x200000

 .
 .  {* This section contains "short" data, and should be placed
 .     "near" the GP.  *}
 .
 .  {* This section contains "short" data, and should be placed
 .     "near" the GP.  *}

-.#define SEC_SMALL_DATA 0x400000
+.#define SEC_SMALL_DATA               0x400000

 .
 .  {* Attempt to merge identical entities in the section.
 .     Entity size is given in the entsize field.  *}
 .
 .  {* Attempt to merge identical entities in the section.
 .     Entity size is given in the entsize field.  *}

-.#define SEC_MERGE 0x800000
+.#define SEC_MERGE                    0x800000

 .
 .  {* If given with SEC_MERGE, entities to merge are zero terminated
 .     strings where entsize specifies character size instead of fixed
 .     size entries.  *}
 .
 .  {* If given with SEC_MERGE, entities to merge are zero terminated
 .     strings where entsize specifies character size instead of fixed
 .     size entries.  *}

-.#define SEC_STRINGS 0x1000000
+.#define SEC_STRINGS                 0x1000000

 .
 .  {* This section contains data about section groups.  *}
 .
 .  {* This section contains data about section groups.  *}

-.#define SEC_GROUP 0x2000000
+.#define SEC_GROUP                   0x2000000

 .
 .  {* The section is a COFF shared library section.  This flag is
 .     only for the linker.  If this type of section appears in
 .
 .  {* The section is a COFF shared library section.  This flag is
 .     only for the linker.  If this type of section appears in


@@ -325,27 +317,46 @@ CODE_FRAGMENT
 .     might be cleaner to have some more general mechanism to
 .     allow the back end to control what the linker does with
 .     sections.  *}
 .     might be cleaner to have some more general mechanism to
 .     allow the back end to control what the linker does with
 .     sections.  *}

-.#define SEC_COFF_SHARED_LIBRARY 0x4000000
+.#define SEC_COFF_SHARED_LIBRARY     0x4000000
+.
+.  {* This input section should be copied to output in reverse order
+.     as an array of pointers.  This is for ELF linker internal use
+.     only.  *}
+.#define SEC_ELF_REVERSE_COPY        0x4000000

 .
 .  {* This section contains data which may be shared with other
 .     executables or shared objects. This is for COFF only.  *}
 .
 .  {* This section contains data which may be shared with other
 .     executables or shared objects. This is for COFF only.  *}

-.#define SEC_COFF_SHARED 0x8000000
+.#define SEC_COFF_SHARED             0x8000000
+.
+.  {* This section should be compressed.  This is for ELF linker
+.     internal use only.  *}
+.#define SEC_ELF_COMPRESS            0x8000000

 .
 .  {* When a section with this flag is being linked, then if the size of
 .     the input section is less than a page, it should not cross a page
 .     boundary.  If the size of the input section is one page or more,
 .     it should be aligned on a page boundary.  This is for TI
 .     TMS320C54X only.  *}
 .
 .  {* When a section with this flag is being linked, then if the size of
 .     the input section is less than a page, it should not cross a page
 .     boundary.  If the size of the input section is one page or more,
 .     it should be aligned on a page boundary.  This is for TI
 .     TMS320C54X only.  *}

-.#define SEC_TIC54X_BLOCK 0x10000000
+.#define SEC_TIC54X_BLOCK           0x10000000
+.
+.  {* This section should be renamed.  This is for ELF linker
+.     internal use only.  *}
+.#define SEC_ELF_RENAME             0x10000000

 .
 .  {* Conditionally link this section; do not link if there are no
 .     references found to any symbol in the section.  This is for TI
 .     TMS320C54X only.  *}
 .
 .  {* Conditionally link this section; do not link if there are no
 .     references found to any symbol in the section.  This is for TI
 .     TMS320C54X only.  *}

-.#define SEC_TIC54X_CLINK 0x20000000
+.#define SEC_TIC54X_CLINK           0x20000000
+.
+.  {* This section contains vliw code.  This is for Toshiba MeP only.  *}
+.#define SEC_MEP_VLIW               0x20000000

 .
 .  {* Indicate that section has the no read flag set. This happens
 .     when memory read flag isn't set. *}
 .
 .  {* Indicate that section has the no read flag set. This happens
 .     when memory read flag isn't set. *}

-.#define SEC_COFF_NOREAD 0x40000000
+.#define SEC_COFF_NOREAD            0x40000000
+.
+.  {* Indicate that section has the purecode flag set.  *}
+.#define SEC_ELF_PURECODE           0x80000000

 .
 .  {*  End of section flags.  *}
 .
 .
 .  {*  End of section flags.  *}
 .


@@ -364,6 +375,12 @@ CODE_FRAGMENT
 .  {* Mark flag used by some linker backends for garbage collection.  *}
 .  unsigned int gc_mark : 1;
 .
 .  {* Mark flag used by some linker backends for garbage collection.  *}
 .  unsigned int gc_mark : 1;
 .

+.  {* Section compression status.  *}
+.  unsigned int compress_status : 2;
+.#define COMPRESS_SECTION_NONE    0
+.#define COMPRESS_SECTION_DONE    1
+.#define DECOMPRESS_SECTION_SIZED 2
+.

 .  {* The following flags are used by the ELF linker. *}
 .
 .  {* Mark sections which have been allocated to segments.  *}
 .  {* The following flags are used by the ELF linker. *}
 .
 .  {* Mark sections which have been allocated to segments.  *}


@@ -371,11 +388,13 @@ CODE_FRAGMENT
 .
 .  {* Type of sec_info information.  *}
 .  unsigned int sec_info_type:3;
 .
 .  {* Type of sec_info information.  *}
 .  unsigned int sec_info_type:3;

-.#define ELF_INFO_TYPE_NONE      0
-.#define ELF_INFO_TYPE_STABS     1
-.#define ELF_INFO_TYPE_MERGE     2
-.#define ELF_INFO_TYPE_EH_FRAME  3
-.#define ELF_INFO_TYPE_JUST_SYMS 4
+.#define SEC_INFO_TYPE_NONE      0
+.#define SEC_INFO_TYPE_STABS     1
+.#define SEC_INFO_TYPE_MERGE     2
+.#define SEC_INFO_TYPE_EH_FRAME  3
+.#define SEC_INFO_TYPE_JUST_SYMS 4
+.#define SEC_INFO_TYPE_TARGET    5
+.#define SEC_INFO_TYPE_EH_FRAME_ENTRY 6

 .
 .  {* Nonzero if this section uses RELA relocations, rather than REL.  *}
 .  unsigned int use_rela_p:1;
 .
 .  {* Nonzero if this section uses RELA relocations, rather than REL.  *}
 .  unsigned int use_rela_p:1;


@@ -383,20 +402,12 @@ CODE_FRAGMENT
 .  {* Bits used by various backends.  The generic code doesn't touch
 .     these fields.  *}
 .
 .  {* Bits used by various backends.  The generic code doesn't touch
 .     these fields.  *}
 .

-.  {* Nonzero if this section has TLS related relocations.  *}
-.  unsigned int has_tls_reloc:1;
-.
-.  {* Nonzero if this section has a call to __tls_get_addr.  *}
-.  unsigned int has_tls_get_addr_call:1;
-.
-.  {* Nonzero if this section has a gp reloc.  *}
-.  unsigned int has_gp_reloc:1;
-.
-.  {* Nonzero if this section needs the relax finalize pass.  *}
-.  unsigned int need_finalize_relax:1;
-.
-.  {* Whether relocations have been processed.  *}
-.  unsigned int reloc_done : 1;
+.  unsigned int sec_flg0:1;
+.  unsigned int sec_flg1:1;
+.  unsigned int sec_flg2:1;
+.  unsigned int sec_flg3:1;
+.  unsigned int sec_flg4:1;
+.  unsigned int sec_flg5:1;

 .
 .  {* End of internal packed boolean fields.  *}
 .
 .
 .  {* End of internal packed boolean fields.  *}
 .


@@ -413,7 +424,7 @@ CODE_FRAGMENT
 .      information.  *}
 .  bfd_vma lma;
 .
 .      information.  *}
 .  bfd_vma lma;
 .

-.  {* The size of the section in octets, as it will be output.
+.  {* The size of the section in *octets*, as it will be output.

 .     Contains a value even if the section has no contents (e.g., the
 .     size of <<.bss>>).  *}
 .  bfd_size_type size;
 .     Contains a value even if the section has no contents (e.g., the
 .     size of <<.bss>>).  *}
 .  bfd_size_type size;


@@ -428,6 +439,16 @@ CODE_FRAGMENT
 .     section size calculated on a previous linker relaxation pass.  *}
 .  bfd_size_type rawsize;
 .
 .     section size calculated on a previous linker relaxation pass.  *}
 .  bfd_size_type rawsize;
 .

+.  {* The compressed size of the section in octets.  *}
+.  bfd_size_type compressed_size;
+.
+.  {* Relaxation table. *}
+.  struct relax_table *relax;
+.
+.  {* Count of used relaxation table entries. *}
+.  int relax_count;
+.
+.

 .  {* If this section is going to be output, then this value is the
 .     offset in *bytes* into the output section of the first byte in the
 .     input section (byte ==> smallest addressable unit on the
 .  {* If this section is going to be output, then this value is the
 .     offset in *bytes* into the output section of the first byte in the
 .     input section (byte ==> smallest addressable unit on the


@@ -517,30 +538,66 @@ CODE_FRAGMENT
 .  } map_head, map_tail;
 .} asection;
 .
 .  } map_head, map_tail;
 .} asection;
 .

+.{* Relax table contains information about instructions which can
+.   be removed by relaxation -- replacing a long address with a
+.   short address.  *}
+.struct relax_table {
+.  {* Address where bytes may be deleted. *}
+.  bfd_vma addr;
+.
+.  {* Number of bytes to be deleted.  *}
+.  int size;
+.};
+.
+.{* Note: the following are provided as inline functions rather than macros
+.   because not all callers use the return value.  A macro implementation
+.   would use a comma expression, eg: "((ptr)->foo = val, TRUE)" and some
+.   compilers will complain about comma expressions that have no effect.  *}
+.static inline bfd_boolean
+.bfd_set_section_userdata (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr,
+.                         void * val)
+.{
+.  ptr->userdata = val;
+.  return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_vma (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr, bfd_vma val)
+.{
+.  ptr->vma = ptr->lma = val;
+.  ptr->user_set_vma = TRUE;
+.  return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_alignment (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr,
+.                          unsigned int val)
+.{
+.  ptr->alignment_power = val;
+.  return TRUE;
+.}
+.

 .{* These sections are global, and are managed by BFD.  The application
 .   and target back end are not permitted to change the values in
 .{* These sections are global, and are managed by BFD.  The application
 .   and target back end are not permitted to change the values in

-.   these sections.  New code should use the section_ptr macros rather
-.   than referring directly to the const sections.  The const sections
-.   may eventually vanish.  *}
+.   these sections.  *}
+.extern asection _bfd_std_section[4];
+.

 .#define BFD_ABS_SECTION_NAME "*ABS*"
 .#define BFD_UND_SECTION_NAME "*UND*"
 .#define BFD_COM_SECTION_NAME "*COM*"
 .#define BFD_IND_SECTION_NAME "*IND*"
 .
 .#define BFD_ABS_SECTION_NAME "*ABS*"
 .#define BFD_UND_SECTION_NAME "*UND*"
 .#define BFD_COM_SECTION_NAME "*COM*"
 .#define BFD_IND_SECTION_NAME "*IND*"
 .

-.{* The absolute section.  *}
-.extern asection bfd_abs_section;
-.#define bfd_abs_section_ptr ((asection *) &bfd_abs_section)
-.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
-.{* Pointer to the undefined section.  *}
-.extern asection bfd_und_section;
-.#define bfd_und_section_ptr ((asection *) &bfd_und_section)
-.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)

 .{* Pointer to the common section.  *}
 .{* Pointer to the common section.  *}

-.extern asection bfd_com_section;
-.#define bfd_com_section_ptr ((asection *) &bfd_com_section)
+.#define bfd_com_section_ptr (&_bfd_std_section[0])
+.{* Pointer to the undefined section.  *}
+.#define bfd_und_section_ptr (&_bfd_std_section[1])
+.{* Pointer to the absolute section.  *}
+.#define bfd_abs_section_ptr (&_bfd_std_section[2])

 .{* Pointer to the indirect section.  *}
 .{* Pointer to the indirect section.  *}

-.extern asection bfd_ind_section;
-.#define bfd_ind_section_ptr ((asection *) &bfd_ind_section)
+.#define bfd_ind_section_ptr (&_bfd_std_section[3])
+.
+.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
+.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)

 .#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr)
 .
 .#define bfd_is_const_section(SEC)             \
 .#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr)
 .
 .#define bfd_is_const_section(SEC)             \


@@ -639,24 +696,24 @@ CODE_FRAGMENT
 .#define bfd_section_removed_from_list(ABFD, S) \
 .  ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
 .
 .#define bfd_section_removed_from_list(ABFD, S) \
 .  ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
 .

-.#define BFD_FAKE_SECTION(SEC, FLAGS, SYM, NAME, IDX)                  \
+.#define BFD_FAKE_SECTION(SEC, SYM, NAME, IDX, FLAGS)                  \

 .  {* name, id,  index, next, prev, flags, user_set_vma,            *} \
 .  {* name, id,  index, next, prev, flags, user_set_vma,            *} \

-.  { NAME,  IDX, 0,     NULL, NULL, FLAGS, 0,                          \
+.  {  NAME, IDX, 0,     NULL, NULL, FLAGS, 0,                          \

 .                                                                      \
 .                                                                      \

-.  {* linker_mark, linker_has_input, gc_mark,                       *} \
-.     0,           0,                1,                                \
+.  {* linker_mark, linker_has_input, gc_mark, decompress_status,    *} \
+.     0,           0,                1,       0,                       \

 .                                                                      \
 .                                                                      \

-.  {* segment_mark, sec_info_type, use_rela_p, has_tls_reloc,       *} \
-.     0,            0,             0,          0,                      \
+.  {* segment_mark, sec_info_type, use_rela_p,                      *} \
+.     0,            0,             0,                                  \

 .                                                                      \
 .                                                                      \

-.  {* has_tls_get_addr_call, has_gp_reloc, need_finalize_relax,     *} \
-.     0,                     0,            0,                          \
+.  {* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5,   *} \
+.     0,        0,        0,        0,        0,        0,             \

 .                                                                      \
 .                                                                      \

-.  {* reloc_done, vma, lma, size, rawsize                           *} \
-.     0,          0,   0,   0,    0,                                   \
+.  {* vma, lma, size, rawsize, compressed_size, relax, relax_count, *} \
+.     0,   0,   0,    0,       0,               0,     0,              \

 .                                                                      \
 .                                                                      \

-.  {* output_offset, output_section,              alignment_power,  *} \
-.     0,             (struct bfd_section *) &SEC, 0,                   \
+.  {* output_offset, output_section, alignment_power,               *} \
+.     0,             &SEC,           0,                                        \

 .                                                                      \
 .  {* relocation, orelocation, reloc_count, filepos, rel_filepos,   *} \
 .     NULL,       NULL,        0,           0,       0,                        \
 .                                                                      \
 .  {* relocation, orelocation, reloc_count, filepos, rel_filepos,   *} \
 .     NULL,       NULL,        0,           0,       0,                        \


@@ -677,39 +734,40 @@ CODE_FRAGMENT
 .     { NULL }, { NULL }                                               \
 .    }
 .
 .     { NULL }, { NULL }                                               \
 .    }
 .

+.{* We use a macro to initialize the static asymbol structures because
+.   traditional C does not permit us to initialize a union member while
+.   gcc warns if we don't initialize it.
+.   the_bfd, name, value, attr, section [, udata]  *}
+.#ifdef __STDC__
+.#define GLOBAL_SYM_INIT(NAME, SECTION) \
+.  { 0, NAME, 0, BSF_SECTION_SYM, SECTION, { 0 }}
+.#else
+.#define GLOBAL_SYM_INIT(NAME, SECTION) \
+.  { 0, NAME, 0, BSF_SECTION_SYM, SECTION }
+.#endif
+.

 */
 
 */
 

-/* We use a macro to initialize the static asymbol structures because
-   traditional C does not permit us to initialize a union member while
-   gcc warns if we don't initialize it.  */
- /* the_bfd, name, value, attr, section [, udata] */
-#ifdef __STDC__
-#define GLOBAL_SYM_INIT(NAME, SECTION) \
-  { 0, NAME, 0, BSF_SECTION_SYM, (asection *) SECTION, { 0 }}
-#else
-#define GLOBAL_SYM_INIT(NAME, SECTION) \
-  { 0, NAME, 0, BSF_SECTION_SYM, (asection *) SECTION }
-#endif
-

 /* These symbols are global, not specific to any BFD.  Therefore, anything
    that tries to change them is broken, and should be repaired.  */
 
 static const asymbol global_syms[] =
 {
 /* These symbols are global, not specific to any BFD.  Therefore, anything
    that tries to change them is broken, and should be repaired.  */
 
 static const asymbol global_syms[] =
 {

-  GLOBAL_SYM_INIT (BFD_COM_SECTION_NAME, &bfd_com_section),
-  GLOBAL_SYM_INIT (BFD_UND_SECTION_NAME, &bfd_und_section),
-  GLOBAL_SYM_INIT (BFD_ABS_SECTION_NAME, &bfd_abs_section),
-  GLOBAL_SYM_INIT (BFD_IND_SECTION_NAME, &bfd_ind_section)
+  GLOBAL_SYM_INIT (BFD_COM_SECTION_NAME, bfd_com_section_ptr),
+  GLOBAL_SYM_INIT (BFD_UND_SECTION_NAME, bfd_und_section_ptr),
+  GLOBAL_SYM_INIT (BFD_ABS_SECTION_NAME, bfd_abs_section_ptr),
+  GLOBAL_SYM_INIT (BFD_IND_SECTION_NAME, bfd_ind_section_ptr)

 };
 
 };
 

-#define STD_SECTION(SEC, FLAGS, NAME, IDX)                             \
-  asection SEC = BFD_FAKE_SECTION(SEC, FLAGS, &global_syms[IDX],       \
-                                 NAME, IDX)
+#define STD_SECTION(NAME, IDX, FLAGS) \
+  BFD_FAKE_SECTION(_bfd_std_section[IDX], &global_syms[IDX], NAME, IDX, FLAGS)

 
 

-STD_SECTION (bfd_com_section, SEC_IS_COMMON, BFD_COM_SECTION_NAME, 0);
-STD_SECTION (bfd_und_section, 0, BFD_UND_SECTION_NAME, 1);
-STD_SECTION (bfd_abs_section, 0, BFD_ABS_SECTION_NAME, 2);
-STD_SECTION (bfd_ind_section, 0, BFD_IND_SECTION_NAME, 3);
+asection _bfd_std_section[] = {
+  STD_SECTION (BFD_COM_SECTION_NAME, 0, SEC_IS_COMMON),
+  STD_SECTION (BFD_UND_SECTION_NAME, 1, 0),
+  STD_SECTION (BFD_ABS_SECTION_NAME, 2, 0),
+  STD_SECTION (BFD_IND_SECTION_NAME, 3, 0)
+};

 #undef STD_SECTION
 
 /* Initialize an entry in the section hash table.  */
 #undef STD_SECTION
 
 /* Initialize an entry in the section hash table.  */


@@ -762,21 +820,21 @@ _bfd_generic_new_section_hook (bfd *abfd, asection *newsect)
   return TRUE;
 }
 
   return TRUE;
 }
 

+unsigned int _bfd_section_id = 0x10;  /* id 0 to 3 used by STD_SECTION.  */
+

 /* Initializes a new section.  NEWSECT->NAME is already set.  */
 
 static asection *
 bfd_section_init (bfd *abfd, asection *newsect)
 {
 /* Initializes a new section.  NEWSECT->NAME is already set.  */
 
 static asection *
 bfd_section_init (bfd *abfd, asection *newsect)
 {

-  static int section_id = 0x10;  /* id 0 to 3 used by STD_SECTION.  */
-
-  newsect->id = section_id;
+  newsect->id = _bfd_section_id;

   newsect->index = abfd->section_count;
   newsect->owner = abfd;
 
   if (! BFD_SEND (abfd, _new_section_hook, (abfd, newsect)))
     return NULL;
 
   newsect->index = abfd->section_count;
   newsect->owner = abfd;
 
   if (! BFD_SEND (abfd, _new_section_hook, (abfd, newsect)))
     return NULL;
 

-  section_id++;
+  _bfd_section_id++;

   abfd->section_count++;
   bfd_section_list_append (abfd, newsect);
   return newsect;
   abfd->section_count++;
   bfd_section_list_append (abfd, newsect);
   return newsect;


@@ -812,6 +870,7 @@ bfd_section_list_clear (bfd *abfd)
   abfd->section_count = 0;
   memset (abfd->section_htab.table, 0,
          abfd->section_htab.size * sizeof (struct bfd_hash_entry *));
   abfd->section_count = 0;
   memset (abfd->section_htab.table, 0,
          abfd->section_htab.size * sizeof (struct bfd_hash_entry *));

+  abfd->section_htab.count = 0;

 }
 
 /*
 }
 
 /*


@@ -822,14 +881,8 @@ SYNOPSIS
        asection *bfd_get_section_by_name (bfd *abfd, const char *name);
 
 DESCRIPTION
        asection *bfd_get_section_by_name (bfd *abfd, const char *name);
 
 DESCRIPTION

-       Run through @var{abfd} and return the one of the
-       <<asection>>s whose name matches @var{name}, otherwise <<NULL>>.
-       @xref{Sections}, for more information.
-
-       This should only be used in special cases; the normal way to process
-       all sections of a given name is to use <<bfd_map_over_sections>> and
-       <<strcmp>> on the name (or better yet, base it on the section flags
-       or something else) for each section.
+       Return the most recently created section attached to @var{abfd}
+       named @var{name}.  Return NULL if no such section exists.

 */
 
 asection *
 */
 
 asection *


@@ -844,6 +897,75 @@ bfd_get_section_by_name (bfd *abfd, const char *name)
   return NULL;
 }
 
   return NULL;
 }
 

+/*
+FUNCTION
+       bfd_get_next_section_by_name
+
+SYNOPSIS
+       asection *bfd_get_next_section_by_name (bfd *ibfd, asection *sec);
+
+DESCRIPTION
+       Given @var{sec} is a section returned by @code{bfd_get_section_by_name},
+       return the next most recently created section attached to the same
+       BFD with the same name, or if no such section exists in the same BFD and
+       IBFD is non-NULL, the next section with the same name in any input
+       BFD following IBFD.  Return NULL on finding no section.
+*/
+
+asection *
+bfd_get_next_section_by_name (bfd *ibfd, asection *sec)
+{
+  struct section_hash_entry *sh;
+  const char *name;
+  unsigned long hash;
+
+  sh = ((struct section_hash_entry *)
+       ((char *) sec - offsetof (struct section_hash_entry, section)));
+
+  hash = sh->root.hash;
+  name = sec->name;
+  for (sh = (struct section_hash_entry *) sh->root.next;
+       sh != NULL;
+       sh = (struct section_hash_entry *) sh->root.next)
+    if (sh->root.hash == hash
+       && strcmp (sh->root.string, name) == 0)
+      return &sh->section;
+
+  if (ibfd != NULL)
+    {
+      while ((ibfd = ibfd->link.next) != NULL)
+       {
+         asection *s = bfd_get_section_by_name (ibfd, name);
+         if (s != NULL)
+           return s;
+       }
+    }
+
+  return NULL;
+}
+
+/*
+FUNCTION
+       bfd_get_linker_section
+
+SYNOPSIS
+       asection *bfd_get_linker_section (bfd *abfd, const char *name);
+
+DESCRIPTION
+       Return the linker created section attached to @var{abfd}
+       named @var{name}.  Return NULL if no such section exists.
+*/
+
+asection *
+bfd_get_linker_section (bfd *abfd, const char *name)
+{
+  asection *sec = bfd_get_section_by_name (abfd, name);
+
+  while (sec != NULL && (sec->flags & SEC_LINKER_CREATED) == 0)
+    sec = bfd_get_next_section_by_name (NULL, sec);
+  return sec;
+}
+

 /*
 FUNCTION
        bfd_get_section_by_name_if
 /*
 FUNCTION
        bfd_get_section_by_name_if


@@ -883,14 +1005,11 @@ bfd_get_section_by_name_if (bfd *abfd, const char *name,
     return NULL;
 
   hash = sh->root.hash;
     return NULL;
 
   hash = sh->root.hash;

-  do
-    {
-      if ((*operation) (abfd, &sh->section, user_storage))
-       return &sh->section;
-      sh = (struct section_hash_entry *) sh->root.next;
-    }
-  while (sh != NULL && sh->root.hash == hash
-        && strcmp (sh->root.string, name) == 0);
+  for (; sh != NULL; sh = (struct section_hash_entry *) sh->root.next)
+    if (sh->root.hash == hash
+       && strcmp (sh->root.string, name) == 0
+       && (*operation) (abfd, &sh->section, user_storage))
+      return &sh->section;

 
   return NULL;
 }
 
   return NULL;
 }


@@ -919,7 +1038,7 @@ bfd_get_unique_section_name (bfd *abfd, const char *templat, int *count)
   char *sname;
 
   len = strlen (templat);
   char *sname;
 
   len = strlen (templat);

-  sname = bfd_malloc (len + 8);
+  sname = (char *) bfd_malloc (len + 8);

   if (sname == NULL)
     return NULL;
   memcpy (sname, templat, len);
   if (sname == NULL)
     return NULL;
   memcpy (sname, templat, len);


@@ -1117,7 +1236,7 @@ bfd_make_section_with_flags (bfd *abfd, const char *name,
   struct section_hash_entry *sh;
   asection *newsect;
 
   struct section_hash_entry *sh;
   asection *newsect;
 

-  if (abfd->output_has_begun)
+  if (abfd == NULL || name == NULL || abfd->output_has_begun)

     {
       bfd_set_error (bfd_error_invalid_operation);
       return NULL;
     {
       bfd_set_error (bfd_error_invalid_operation);
       return NULL;


@@ -1194,6 +1313,29 @@ bfd_set_section_flags (bfd *abfd ATTRIBUTE_UNUSED,
   return TRUE;
 }
 
   return TRUE;
 }
 

+/*
+FUNCTION
+       bfd_rename_section
+
+SYNOPSIS
+       void bfd_rename_section
+         (bfd *abfd, asection *sec, const char *newname);
+
+DESCRIPTION
+       Rename section @var{sec} in @var{abfd} to @var{newname}.
+*/
+
+void
+bfd_rename_section (bfd *abfd, sec_ptr sec, const char *newname)
+{
+  struct section_hash_entry *sh;
+
+  sh = (struct section_hash_entry *)
+    ((char *) sec - offsetof (struct section_hash_entry, section));
+  sh->section.name = newname;
+  bfd_hash_rename (&abfd->section_htab, newname, &sh->root);
+}
+

 /*
 FUNCTION
        bfd_map_over_sections
 /*
 FUNCTION
        bfd_map_over_sections


@@ -1214,7 +1356,7 @@ DESCRIPTION
        This is the preferred method for iterating over sections; an
        alternative would be to use a loop:
 
        This is the preferred method for iterating over sections; an
        alternative would be to use a loop:
 

-|         section *p;
+|         asection *p;

 |         for (p = abfd->sections; p != NULL; p = p->next)
 |            func (abfd, p, ...)
 
 |         for (p = abfd->sections; p != NULL; p = p->next)
 |            func (abfd, p, ...)
 


@@ -1315,16 +1457,20 @@ SYNOPSIS
 
 DESCRIPTION
        Sets the contents of the section @var{section} in BFD
 
 DESCRIPTION
        Sets the contents of the section @var{section} in BFD

-       @var{abfd} to the data starting in memory at @var{data}. The
-       data is written to the output section starting at offset
+       @var{abfd} to the data starting in memory at @var{location}.
+       The data is written to the output section starting at offset

        @var{offset} for @var{count} octets.
 
        @var{offset} for @var{count} octets.
 

-       Normally <<TRUE>> is returned, else <<FALSE>>. Possible error
-       returns are:
+       Normally <<TRUE>> is returned, but <<FALSE>> is returned if
+       there was an error.  Possible error returns are:

        o <<bfd_error_no_contents>> -
        The output section does not have the <<SEC_HAS_CONTENTS>>
        attribute, so nothing can be written to it.
        o <<bfd_error_no_contents>> -
        The output section does not have the <<SEC_HAS_CONTENTS>>
        attribute, so nothing can be written to it.

-       o and some more too
+       o <<bfd_error_bad_value>> -
+       The section is unable to contain all of the data.
+       o <<bfd_error_invalid_operation>> -
+       The BFD is not writeable.
+       o and some more too.

 
        This routine is front end to the back end function
        <<_bfd_set_section_contents>>.
 
        This routine is front end to the back end function
        <<_bfd_set_section_contents>>.


@@ -1414,7 +1560,10 @@ bfd_get_section_contents (bfd *abfd,
       return TRUE;
     }
 
       return TRUE;
     }
 

-  sz = section->rawsize ? section->rawsize : section->size;
+  if (abfd->direction != write_direction && section->rawsize != 0)
+    sz = section->rawsize;
+  else
+    sz = section->size;

   if ((bfd_size_type) offset > sz
       || count > sz
       || offset + count > sz
   if ((bfd_size_type) offset > sz
       || count > sz
       || offset + count > sz


@@ -1436,7 +1585,17 @@ bfd_get_section_contents (bfd *abfd,
 
   if ((section->flags & SEC_IN_MEMORY) != 0)
     {
 
   if ((section->flags & SEC_IN_MEMORY) != 0)
     {

-      memcpy (location, section->contents + offset, (size_t) count);
+      if (section->contents == NULL)
+       {
+         /* This can happen because of errors earlier on in the linking process.
+            We do not want to seg-fault here, so clear the flag and return an
+            error code.  */
+         section->flags &= ~ SEC_IN_MEMORY;
+         bfd_set_error (bfd_error_invalid_operation);
+         return FALSE;
+       }
+
+      memmove (location, section->contents + offset, (size_t) count);

       return TRUE;
     }
 
       return TRUE;
     }
 


@@ -1460,19 +1619,8 @@ DESCRIPTION
 bfd_boolean
 bfd_malloc_and_get_section (bfd *abfd, sec_ptr sec, bfd_byte **buf)
 {
 bfd_boolean
 bfd_malloc_and_get_section (bfd *abfd, sec_ptr sec, bfd_byte **buf)
 {

-  bfd_size_type sz = sec->rawsize ? sec->rawsize : sec->size;
-  bfd_byte *p = NULL;
-
-  *buf = p;
-  if (sz == 0)
-    return TRUE;
-
-  p = bfd_malloc (sec->rawsize > sec->size ? sec->rawsize : sec->size);
-  if (p == NULL)
-    return FALSE;
-  *buf = p;
-
-  return bfd_get_section_contents (abfd, sec, p, 0, sz);
+  *buf = NULL;
+  return bfd_get_full_section_contents (abfd, sec, buf);

 }
 /*
 FUNCTION
 }
 /*
 FUNCTION


@@ -1492,8 +1640,8 @@ DESCRIPTION
        Not enough memory exists to create private data for @var{osec}.
 
 .#define bfd_copy_private_section_data(ibfd, isection, obfd, osection) \
        Not enough memory exists to create private data for @var{osec}.
 
 .#define bfd_copy_private_section_data(ibfd, isection, obfd, osection) \

-.     BFD_SEND (obfd, _bfd_copy_private_section_data, \
-.              (ibfd, isection, obfd, osection))
+.      BFD_SEND (obfd, _bfd_copy_private_section_data, \
+.                (ibfd, isection, obfd, osection))

 */
 
 /*
 */
 
 /*


@@ -1531,3 +1679,13 @@ bfd_generic_discard_group (bfd *abfd ATTRIBUTE_UNUSED,
 {
   return TRUE;
 }
 {
   return TRUE;
 }

+
+bfd_boolean
+_bfd_nowrite_set_section_contents (bfd *abfd,
+                                  sec_ptr section ATTRIBUTE_UNUSED,
+                                  const void *location ATTRIBUTE_UNUSED,
+                                  file_ptr offset ATTRIBUTE_UNUSED,
+                                  bfd_size_type count ATTRIBUTE_UNUSED)
+{
+  return _bfd_bool_bfd_false_error (abfd);
+}