/* NDS32-specific support for 32-bit ELF.
- Copyright (C) 2012-2017 Free Software Foundation, Inc.
+ Copyright (C) 2012-2020 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
This file is part of BFD, the Binary File Descriptor library.
/* 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 (1 << 31)
+#define R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG (1u << 31)
/* Optimize for performance. */
-#define R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG (1 << 30)
+#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 (1 << 29)
+#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 (1 << 28)
-/* EX9 and link-time IFC must be explicitly enabled, so we
- won't mess up handcraft assembly code. */
-/* Enable EX9 optimization for this section. */
-#define R_NDS32_RELAX_ENTRY_EX9_FLAG (1 << 2)
-/* Enable IFC optimization for this section. */
-#define R_NDS32_RELAX_ENTRY_IFC_FLAG (1 << 3)
+#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 (1 << 0)
+#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 (1 << 1)
+#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 (1 << 0)
+#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 (1 << 1)
-/* Suppress EX9 optimization in the region. */
-#define R_NDS32_RELAX_REGION_NO_EX9_FLAG (1 << 2)
+#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 (1 << 4)
+#define R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG (1u << 4)
/* Tag range for LOADSTORE relocation. */
enum
NDS32_LOADSTORE_IMM = 0x20
};
-/* Relax tag for nds32_elf_relax_section, we have to specify which
- optimization do in this round. */
-enum
+struct section_id_list_t
{
- NDS32_RELAX_NONE_ROUND = 0,
- NDS32_RELAX_NORMAL_ROUND,
- NDS32_RELAX_JUMP_IFC_ROUND,
- NDS32_RELAX_EX9_BUILD_ROUND,
- NDS32_RELAX_EX9_REPLACE_ROUND,
- NDS32_RELAX_EMPTY_ROUND
+ int id;
+ struct section_id_list_t *next;
};
-/* Optimization status mask. */
-#define NDS32_RELAX_JUMP_IFC_DONE (1 << 0)
-#define NDS32_RELAX_EX9_DONE (1 << 1)
-
-/* Optimization turn on mask. */
-#define NDS32_RELAX_JUMP_IFC_ON (1 << 0)
-#define NDS32_RELAX_EX9_ON (1 << 1)
-\f
+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 *));
+(void *, size_t, size_t, int (*) (const void *, const void *));
-extern int nds32_elf_ex9_init (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, int, FILE *,
- FILE *, int, int,
- bfd_boolean, bfd_boolean);
+ 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 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> */
+ 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;
- int target_optimize; /* Switch optimization. */
- int relax_status; /* Finished optimization. */
- int relax_round; /* Going optimization. */
- FILE *ex9_export_file; /* --mexport-ex9=<file> */
- FILE *ex9_import_file; /* --mimport-ex9=<file> */
- int update_ex9_table; /* --mupdate-ex9. */
- int ex9_limit;
- bfd_boolean ex9_loop_aware; /* Ignore ex9 if inside a loop. */
- bfd_boolean ifc_loop_aware; /* Ignore ifc if inside a loop. */
+
+ /* 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 dt_tlsdesc_plt;
+
+ /* The offset into sgot of the GOT entry used by the PLT entry
+ above. */
+ bfd_vma dt_tlsdesc_got;
+
+ /* 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
+#endif /* ELF32_NDS32_H */
projects / deliverable / binutils-gdb.git / blobdiff