9bcc30e417
All ELF backends with TLS descriptor support have
/* The offset into splt of the PLT entry for the TLS descriptor
resolver. Special values are 0, if not necessary (or not found
to be necessary yet), and -1 if needed but not determined
yet. */
bfd_vma tlsdesc_plt;
/* The GOT offset for the lazy trampoline. Communicated to the
loader via DT_TLSDESC_GOT. The magic value (bfd_vma) -1
indicates an offset is not allocated. */
bfd_vma tlsdesc_got;
in symbol hash entry. Move tlsdesc_plt/tlsdesc_got to elf_link_hash_entry
to reduce code duplication.
* elf-bfd.h (elf_link_hash_entry): Add tlsdesc_plt and
tlsdesc_got.
* elf32-arm.c (elf32_arm_link_hash_table): Remove tlsdesc_plt
and dt_tlsdesc_got.
(elf32_arm_size_dynamic_sections): Updated. Clear
root.tlsdesc_plt for DF_BIND_NOW.
(elf32_arm_finish_dynamic_sections): Updated.
(elf32_arm_output_arch_local_syms): Likewise.
* elf32-nds32.c (nds32_elf_size_dynamic_sections): Updated.
Clear root.tlsdesc_plt for DF_BIND_NOW.
(nds32_elf_finish_dynamic_sections): Updated.
* elf32-nds32.h (elf_nds32_link_hash_table): Remove
dt_tlsdesc_plt and dt_tlsdesc_got.
* elf64-x86-64.c (elf_x86_64_finish_dynamic_sections): Updated.
* elfnn-aarch64.c (elf_aarch64_link_hash_table): Remove
tlsdesc_plt and dt_tlsdesc_got.
(elfNN_aarch64_allocate_dynrelocs): Updated.
(elfNN_aarch64_finish_dynamic_sections): Likewise.
(elfNN_aarch64_size_dynamic_sections): Updated. Clear
root.tlsdesc_plt for DF_BIND_NOW. Don't check DF_BIND_NOW
twice.
* elfxx-x86.c (elf_x86_allocate_dynrelocs): Updated.
(_bfd_x86_elf_size_dynamic_sections): Likewise.
(_bfd_x86_elf_finish_dynamic_sections): Likewise.
* elfxx-x86.h (elf_x86_link_hash_table): Remove tlsdesc_plt and
tlsdesc_got.
163 lines
5.5 KiB
C
163 lines
5.5 KiB
C
/* NDS32-specific support for 32-bit ELF.
|
|
Copyright (C) 2012-2020 Free Software Foundation, Inc.
|
|
Contributed by Andes Technology Corporation.
|
|
|
|
This file is part of BFD, the Binary File Descriptor library.
|
|
|
|
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.*/
|
|
|
|
#ifndef ELF32_NDS32_H
|
|
#define ELF32_NDS32_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Relocation flags encoded in r_addend. */
|
|
|
|
/* Relocation flags for R_NDS32_ERLAX_ENTRY. */
|
|
|
|
/* Set if relax on this section is done or disabled. */
|
|
#define R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG (1u << 31)
|
|
/* Optimize for performance. */
|
|
#define R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG (1u << 30)
|
|
/* Optimize for size. Branch destination 4-byte adjustment
|
|
may be disabled. */
|
|
#define R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG (1u << 29)
|
|
/* To distinguish the assembly code generated by compiler
|
|
or written manually. */
|
|
#define R_NDS32_RELAX_ENTRY_VERBATIM_FLAG (1u << 28)
|
|
/* Two bits for ICT to comply with files without directive. */
|
|
/* ICT small model. */
|
|
#define R_NDS32_RELAX_ENTRY_ICT_SMALL (0x2u << 4)
|
|
/* ICT large model. */
|
|
#define R_NDS32_RELAX_ENTRY_ICT_LARGE (0x3u << 4)
|
|
/* Mask for get ict bits. */
|
|
#define R_NDS32_RELAX_ENTRY_ICT_MASK (0x3u << 4)
|
|
|
|
|
|
/* Relocation flags for R_NDS32_INSN16. */
|
|
|
|
/* Tag the nop16 can be removed. */
|
|
#define R_NDS32_INSN16_CONVERT_FLAG (1u << 0)
|
|
/* Convert a gp-relative access (e.g., lwi.gp)
|
|
to fp-as-gp access (lwi37.fp).
|
|
This value is used by linker internally only.
|
|
It's fine to change the vlaue. */
|
|
#define R_NDS32_INSN16_FP7U2_FLAG (1u << 1)
|
|
|
|
/* Relocation flags for R_NDS32_RELAX_REGION_OMIT_FP_START/END. */
|
|
|
|
/* OMIT_FP_FLAG marks the region for applying fp-as-gp
|
|
optimization. */
|
|
#define R_NDS32_RELAX_REGION_OMIT_FP_FLAG (1u << 0)
|
|
/* NOT_OMIT_FP_FLAG is set if this region is not worth
|
|
for fp-as-gp. */
|
|
#define R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG (1u << 1)
|
|
/* A Innermost loop region. Some optimizations is suppressed
|
|
in this region due to performance drop. */
|
|
#define R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG (1u << 4)
|
|
|
|
/* Tag range for LOADSTORE relocation. */
|
|
enum
|
|
{
|
|
NDS32_LOADSTORE_NONE = 0x0,
|
|
NDS32_LOADSTORE_BYTE = 0x1,
|
|
NDS32_LOADSTORE_HALF = 0x2,
|
|
NDS32_LOADSTORE_WORD = 0x4,
|
|
NDS32_LOADSTORE_FLOAT_S = 0x8,
|
|
NDS32_LOADSTORE_FLOAT_D = 0x10,
|
|
NDS32_LOADSTORE_IMM = 0x20
|
|
};
|
|
|
|
struct section_id_list_t
|
|
{
|
|
int id;
|
|
struct section_id_list_t *next;
|
|
};
|
|
|
|
extern struct section_id_list_t *elf32_nds32_lookup_section_id
|
|
(int, struct section_id_list_t **);
|
|
extern int elf32_nds32_check_relax_group (bfd *, asection *);
|
|
extern int elf32_nds32_unify_relax_group (bfd *, asection *);
|
|
extern int nds32_elf_unify_tls_model (bfd *, asection *, bfd_byte *,
|
|
struct bfd_link_info *);
|
|
extern void nds32_insertion_sort
|
|
(void *, size_t, size_t, int (*) (const void *, const void *));
|
|
|
|
extern int nds32_convert_32_to_16 (bfd *, uint32_t, uint16_t *, int *);
|
|
extern int nds32_convert_16_to_32 (bfd *, uint16_t, uint32_t *);
|
|
extern void bfd_elf32_nds32_set_target_option (struct bfd_link_info *,
|
|
int, int, FILE *,
|
|
int, int, int);
|
|
|
|
#define nds32_elf_hash_table(info) \
|
|
(elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
|
|
== NDS32_ELF_DATA ? \
|
|
((struct elf_nds32_link_hash_table *) ((info)->hash)) : NULL)
|
|
|
|
#define elf32_nds32_compute_jump_table_size(htab) \
|
|
((htab)->next_tls_desc_index * 4)
|
|
|
|
#define elf32_nds32_local_tlsdesc_gotent(bfd) \
|
|
(elf_nds32_tdata (bfd)->local_tlsdesc_gotent)
|
|
|
|
/* Hash table structure for target nds32. There are some members to
|
|
save target options passed from nds32elf.em to bfd. */
|
|
|
|
struct elf_nds32_link_hash_table
|
|
{
|
|
struct elf_link_hash_table root;
|
|
|
|
/* Short-cuts to get to dynamic linker sections. */
|
|
asection *sdynbss;
|
|
asection *srelbss;
|
|
|
|
/* Small local sym to section mapping cache. */
|
|
struct sym_cache sym_cache;
|
|
|
|
/* Target dependent options. */
|
|
int relax_fp_as_gp; /* --mrelax-omit-fp. */
|
|
int eliminate_gc_relocs; /* --meliminate-gc-relocs. */
|
|
FILE *sym_ld_script; /* --mgen-symbol-ld-script=<file>. */
|
|
bfd_boolean hyper_relax; /* Relax for symbol not in RW sections. */
|
|
int tls_desc_trampoline; /* --m[no-]tlsdesc-trampoline. */
|
|
/* Disable if linking a dynamically linked executable. */
|
|
int load_store_relax;
|
|
|
|
/* Offset in .plt section of tls_nds32_trampoline. */
|
|
bfd_vma tls_trampoline;
|
|
|
|
/* The index of the next unused R_NDS32_TLS_DESC slot in .rel.plt. */
|
|
bfd_vma next_tls_desc_index;
|
|
|
|
/* How many R_NDS32_TLS_DESC relocations were generated so far. */
|
|
bfd_vma num_tls_desc;
|
|
|
|
/* The amount of space used by the reserved portion of the sgotplt
|
|
section, plus whatever space is used by the jump slots. */
|
|
bfd_vma sgotplt_jump_table_size;
|
|
|
|
/* True if the target uses REL relocations. */
|
|
int use_rel;
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ELF32_NDS32_H */
|