X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-nds32.h;h=5f683664bfc6c2c7c753d8a4b13c801e8efb959f;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=c28617fcb5bed467a611c0a5c95ab49045ccf708;hpb=6f2750feaf2827ef8a1a0a5b2f90c1e9a6cabbd1;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-nds32.h b/bfd/elf32-nds32.h index c28617fcb5..5f683664bf 100644 --- a/bfd/elf32-nds32.h +++ b/bfd/elf32-nds32.h @@ -1,5 +1,5 @@ /* NDS32-specific support for 32-bit ELF. - Copyright (C) 2012-2016 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. @@ -22,51 +22,54 @@ #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 (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 @@ -80,43 +83,38 @@ 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) - +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); +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. */ @@ -125,11 +123,6 @@ struct elf_nds32_link_hash_table struct elf_link_hash_table root; /* Short-cuts to get to dynamic linker sections. */ - asection *sgot; - asection *sgotplt; - asection *srelgot; - asection *splt; - asection *srelplt; asection *sdynbss; asection *srelbss; @@ -137,19 +130,43 @@ struct elf_nds32_link_hash_table 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= */ + int relax_fp_as_gp; /* --mrelax-omit-fp. */ + int eliminate_gc_relocs; /* --meliminate-gc-relocs. */ + FILE *sym_ld_script; /* --mgen-symbol-ld-script=. */ + 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 *ex9_import_file; /* --mimport-ex9= */ - 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 /* ELF32_NDS32_H */