mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
a91e1603af
Mark an ALLOC section, which should be placed in special memory area,
with SHF_GNU_MBIND. Its sh_info field indicates the special memory
type. GNU_MBIND section names start with ".mbind" so that they are
placed as orphan sections by linker. All input GNU_MBIND sections
with the same sh_type, sh_flags and sh_info are placed in one output
GNU_MBIND section. In executable and shared object, create a
GNU_MBIND segment for each GNU_MBIND section and its segment type is
PT_GNU_MBIND_LO plus the sh_info value. Each GNU_MBIND segment is
aligned at page boundary.
The assembler syntax:
.section .mbind.foo,"adx",%progbits
^ 0: Special memory type.
|
'd' for SHF_GNU_MBIND.
.section .mbind.foo,"adx",%progbits,0x1
^ 1: Special memory type.
|
'd' for SHF_GNU_MBIND.
.section .mbind.bar,"adG",%progbits,.foo_group,comdat,0x2
^ 2: Special memory type.
|
'd' for SHF_GNU_MBIND.
bfd/
* elf.c (get_program_header_size): Add a GNU_MBIND segment for
each GNU_MBIND section and align GNU_MBIND section to page size.
(_bfd_elf_map_sections_to_segments): Create a GNU_MBIND
segment for each GNU_MBIND section.
(_bfd_elf_init_private_section_data): Copy sh_info from input
for GNU_MBIND section.
binutils/
* NEWS: Mention support for ELF SHF_GNU_MBIND and
PT_GNU_MBIND_XXX.
* readelf.c (get_segment_type): Handle PT_GNU_MBIND_XXX.
(get_elf_section_flags): Handle SHF_GNU_MBIND.
(process_section_headers): Likewise.
* testsuite/binutils-all/mbind1.s: New file.
* testsuite/binutils-all/objcopy.exp: Run readelf test on
mbind1.s.
gas/
* NEWS: Mention support for ELF SHF_GNU_MBIND.
* config/obj-elf.c (section_match): New.
(get_section): Match both sh_info and group name.
(obj_elf_change_section): Add argument for sh_info. Pass both
sh_info and group name to get_section. Issue an error for
SHF_GNU_MBIND section without SHF_ALLOC. Set sh_info.
(obj_elf_parse_section_letters): Set SHF_GNU_MBIND for 'd'.
(obj_elf_section): Support SHF_GNU_MBIND section info.
* config/obj-elf.h (obj_elf_change_section): Add argument for
sh_info.
* config/tc-arm.c (start_unwind_section): Pass 0 as sh_info to
obj_elf_change_section.
* config/tc-ia64.c (obj_elf_vms_common): Likewise.
* config/tc-microblaze.c (microblaze_s_data): Likewise.
(microblaze_s_sdata): Likewise.
(microblaze_s_rdata): Likewise.
(microblaze_s_bss): Likewise.
* config/tc-mips.c (s_change_section): Likewise.
* config/tc-msp430.c (msp430_profiler): Likewise.
* config/tc-rx.c (parse_rx_section): Likewise.
* config/tc-tic6x.c (tic6x_start_unwind_section): Likewise.
* doc/as.texinfo: Document 'd' for SHF_GNU_MBIND.
* testsuite/gas/elf/elf.exp: Run section12a, section12b and
section13.
* testsuite/gas/elf/section10.d: Updated.
* testsuite/gas/elf/section10.s: Likewise.
* testsuite/gas/elf/section12.s: New file.
* testsuite/gas/elf/section12a.d: Likewise.
* testsuite/gas/elf/section12b.d: Likewise.
* testsuite/gas/elf/section13.l: Likewise.
* testsuite/gas/elf/section13.d: Likewise.
* testsuite/gas/elf/section13.s: Likewise.
include/
* elf/common.h (PT_GNU_MBIND_NUM): New.
(PT_GNU_MBIND_LO): Likewise.
(PT_GNU_MBIND_HI): Likewise.
(SHF_GNU_MBIND): Likewise.
ld/
* NEWS: Mention support for ELF SHF_GNU_MBIND and
PT_GNU_MBIND_XXX.
* emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Place
input GNU_MBIND sections with the same type, attributes and
sh_info field into a single output GNU_MBIND section.
* testsuite/ld-elf/elf.exp: Run mbind2a and mbind2b.
* testsuite/ld-elf/mbind1.s: New file.
* testsuite/ld-elf/mbind1a.d: Likewise.
* testsuite/ld-elf/mbind1b.d: Likewise.
* testsuite/ld-elf/mbind1c.d: Likewise.
* testsuite/ld-elf/mbind2a.s: Likewise.
* testsuite/ld-elf/mbind2b.c: Likewise.
254 lines
7.2 KiB
C
254 lines
7.2 KiB
C
/* ELF object file format.
|
|
Copyright (C) 1992-2017 Free Software Foundation, Inc.
|
|
|
|
This file is part of GAS, the GNU Assembler.
|
|
|
|
GAS 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, or (at your option)
|
|
any later version.
|
|
|
|
GAS 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 GAS; see the file COPYING. If not, write to the Free
|
|
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
|
|
02110-1301, USA. */
|
|
|
|
/* HP PA-RISC support was contributed by the Center for Software Science
|
|
at the University of Utah. */
|
|
|
|
#ifndef _OBJ_ELF_H
|
|
#define _OBJ_ELF_H
|
|
|
|
#define OBJ_ELF 1
|
|
|
|
/* Note that all macros in this file should be wrapped in #ifndef, for
|
|
sake of obj-multi.h which includes this file. */
|
|
|
|
#ifndef OUTPUT_FLAVOR
|
|
#define OUTPUT_FLAVOR bfd_target_elf_flavour
|
|
#endif
|
|
|
|
#define BYTES_IN_WORD 4 /* for now */
|
|
#include "bfd/elf-bfd.h"
|
|
|
|
#include "targ-cpu.h"
|
|
|
|
#ifdef TC_ALPHA
|
|
#define ECOFF_DEBUGGING (alpha_flag_mdebug > 0)
|
|
extern int alpha_flag_mdebug;
|
|
#endif
|
|
|
|
/* For now, always set ECOFF_DEBUGGING for a MIPS target. */
|
|
#ifdef TC_MIPS
|
|
#define ECOFF_DEBUGGING mips_flag_mdebug
|
|
extern int mips_flag_mdebug;
|
|
#endif /* TC_MIPS */
|
|
|
|
#ifdef OBJ_MAYBE_ECOFF
|
|
#ifndef ECOFF_DEBUGGING
|
|
#define ECOFF_DEBUGGING 1
|
|
#endif
|
|
#endif
|
|
|
|
/* Additional information we keep for each symbol. */
|
|
struct elf_obj_sy
|
|
{
|
|
/* Whether the symbol has been marked as local. */
|
|
int local;
|
|
|
|
/* Use this to keep track of .size expressions that involve
|
|
differences that we can't compute yet. */
|
|
expressionS *size;
|
|
|
|
/* The name specified by the .symver directive. */
|
|
char *versioned_name;
|
|
|
|
#ifdef ECOFF_DEBUGGING
|
|
/* If we are generating ECOFF debugging information, we need some
|
|
additional fields for each symbol. */
|
|
struct efdr *ecoff_file;
|
|
struct localsym *ecoff_symbol;
|
|
valueT ecoff_extern_size;
|
|
#endif
|
|
};
|
|
|
|
#define OBJ_SYMFIELD_TYPE struct elf_obj_sy
|
|
|
|
#ifndef FALSE
|
|
#define FALSE 0
|
|
#define TRUE !FALSE
|
|
#endif
|
|
|
|
#ifndef obj_begin
|
|
#define obj_begin() elf_begin ()
|
|
#endif
|
|
extern void elf_begin (void);
|
|
|
|
#ifndef LOCAL_LABEL_PREFIX
|
|
#define LOCAL_LABEL_PREFIX '.'
|
|
#endif
|
|
|
|
/* should be conditional on address size! */
|
|
#define elf_symbol(asymbol) ((elf_symbol_type *) (&(asymbol)->the_bfd))
|
|
|
|
#ifndef S_GET_SIZE
|
|
#define S_GET_SIZE(S) \
|
|
(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size)
|
|
#endif
|
|
#ifndef S_SET_SIZE
|
|
#define S_SET_SIZE(S,V) \
|
|
(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_size = (V))
|
|
#endif
|
|
|
|
#ifndef S_GET_ALIGN
|
|
#define S_GET_ALIGN(S) \
|
|
(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value)
|
|
#endif
|
|
#ifndef S_SET_ALIGN
|
|
#define S_SET_ALIGN(S,V) \
|
|
(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_value = (V))
|
|
#endif
|
|
|
|
int elf_s_get_other (symbolS *);
|
|
#ifndef S_GET_OTHER
|
|
#define S_GET_OTHER(S) (elf_s_get_other (S))
|
|
#endif
|
|
#ifndef S_SET_OTHER
|
|
#define S_SET_OTHER(S,V) \
|
|
(elf_symbol (symbol_get_bfdsym (S))->internal_elf_sym.st_other = (V))
|
|
#endif
|
|
|
|
extern asection *gdb_section;
|
|
|
|
#ifndef obj_frob_file
|
|
#define obj_frob_file elf_frob_file
|
|
#endif
|
|
extern void elf_frob_file (void);
|
|
|
|
#ifndef obj_frob_file_before_adjust
|
|
#define obj_frob_file_before_adjust elf_frob_file_before_adjust
|
|
#endif
|
|
extern void elf_frob_file_before_adjust (void);
|
|
|
|
#ifndef obj_frob_file_after_relocs
|
|
#define obj_frob_file_after_relocs elf_frob_file_after_relocs
|
|
#endif
|
|
extern void elf_frob_file_after_relocs (void);
|
|
|
|
/* If the target doesn't have special processing for labels, take care of
|
|
dwarf2 output at the object file level. */
|
|
#ifndef tc_frob_label
|
|
#include "dwarf2dbg.h"
|
|
#define obj_frob_label dwarf2_emit_label
|
|
#endif
|
|
|
|
#ifndef obj_app_file
|
|
#define obj_app_file elf_file_symbol
|
|
#endif
|
|
extern void elf_file_symbol (const char *, int);
|
|
|
|
extern void obj_elf_section_change_hook (void);
|
|
|
|
extern void obj_elf_section (int);
|
|
extern const char * obj_elf_section_name (void);
|
|
extern void obj_elf_previous (int);
|
|
extern void obj_elf_version (int);
|
|
extern void obj_elf_common (int);
|
|
extern void obj_elf_data (int);
|
|
extern void obj_elf_text (int);
|
|
extern void obj_elf_change_section
|
|
(const char *, unsigned int, unsigned int, bfd_vma, int, const char *,
|
|
int, int);
|
|
extern struct fix *obj_elf_vtable_inherit (int);
|
|
extern struct fix *obj_elf_vtable_entry (int);
|
|
extern bfd_boolean obj_elf_seen_attribute
|
|
(int, unsigned int);
|
|
extern int obj_elf_vendor_attribute (int);
|
|
|
|
/* BFD wants to write the udata field, which is a no-no for the
|
|
predefined section symbols in bfd/section.c. They are read-only. */
|
|
#ifndef obj_sec_sym_ok_for_reloc
|
|
#define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0)
|
|
#endif
|
|
|
|
void elf_obj_read_begin_hook (void);
|
|
#ifndef obj_read_begin_hook
|
|
#define obj_read_begin_hook elf_obj_read_begin_hook
|
|
#endif
|
|
|
|
void elf_obj_symbol_new_hook (symbolS *);
|
|
#ifndef obj_symbol_new_hook
|
|
#define obj_symbol_new_hook elf_obj_symbol_new_hook
|
|
#endif
|
|
|
|
void elf_copy_symbol_attributes (symbolS *, symbolS *);
|
|
#ifndef OBJ_COPY_SYMBOL_ATTRIBUTES
|
|
#define OBJ_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
|
|
(elf_copy_symbol_attributes (DEST, SRC))
|
|
#endif
|
|
|
|
void elf_adjust_symtab (void);
|
|
#ifndef obj_adjust_symtab
|
|
#define obj_adjust_symtab elf_adjust_symtab
|
|
#endif
|
|
|
|
#ifndef SEPARATE_STAB_SECTIONS
|
|
/* Avoid ifndef each separate macro setting by wrapping the whole of the
|
|
stab group on the assumption that whoever sets SEPARATE_STAB_SECTIONS
|
|
caters to ECOFF_DEBUGGING and the right setting of INIT_STAB_SECTIONS
|
|
and OBJ_PROCESS_STAB too, without needing the tweaks below. */
|
|
|
|
/* Stabs go in a separate section. */
|
|
#define SEPARATE_STAB_SECTIONS 1
|
|
|
|
/* We need 12 bytes at the start of the section to hold some initial
|
|
information. */
|
|
extern void obj_elf_init_stab_section (segT);
|
|
#define INIT_STAB_SECTION(seg) obj_elf_init_stab_section (seg)
|
|
|
|
#ifdef ECOFF_DEBUGGING
|
|
/* We smuggle stabs in ECOFF rather than using a separate section.
|
|
The Irix linker can not handle a separate stabs section. */
|
|
|
|
#undef SEPARATE_STAB_SECTIONS
|
|
#define SEPARATE_STAB_SECTIONS (!ECOFF_DEBUGGING)
|
|
|
|
#undef INIT_STAB_SECTION
|
|
#define INIT_STAB_SECTION(seg) \
|
|
((void) (ECOFF_DEBUGGING ? 0 : (obj_elf_init_stab_section (seg), 0)))
|
|
|
|
#undef OBJ_PROCESS_STAB
|
|
#define OBJ_PROCESS_STAB(seg, what, string, type, other, desc) \
|
|
if (ECOFF_DEBUGGING) \
|
|
ecoff_stab ((seg), (what), (string), (type), (other), (desc))
|
|
#endif /* ECOFF_DEBUGGING */
|
|
|
|
#endif /* SEPARATE_STAB_SECTIONS not defined. */
|
|
|
|
extern void elf_frob_symbol (symbolS *, int *);
|
|
#ifndef obj_frob_symbol
|
|
#define obj_frob_symbol(symp, punt) elf_frob_symbol (symp, &punt)
|
|
#endif
|
|
|
|
extern void elf_pop_insert (void);
|
|
#ifndef obj_pop_insert
|
|
#define obj_pop_insert() elf_pop_insert()
|
|
#endif
|
|
|
|
#ifndef OBJ_MAYBE_ELF
|
|
/* If OBJ_MAYBE_ELF then obj-multi.h will define obj_ecoff_set_ext. */
|
|
#define obj_ecoff_set_ext elf_ecoff_set_ext
|
|
struct ecoff_extr;
|
|
extern void elf_ecoff_set_ext (symbolS *, struct ecoff_extr *);
|
|
#endif
|
|
extern asection *elf_com_section_ptr;
|
|
extern symbolS * elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP,
|
|
addressT size);
|
|
|
|
#endif /* _OBJ_ELF_H */
|