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| author | Kuan-Lin Chen <kuanlinchentw@gmail.com> | 2014-09-11 14:25:05 +0800 |
|---|---|---|
| committer | Kuan-Lin Chen <kuanlinchentw@gmail.com> | 2014-09-16 13:08:00 +0800 |
| commit | 1c8f6a4d1fcca9e56ac705a224778bf690122a07 (patch) | |
| tree | 7ff41099c5a2f8b433f654b509a7c259899124e4 /bfd/elf32-nds32.h | |
| parent | 40c7a7cb74ee4a9ec0830d734198fcd0e99c3a37 (diff) | |
| download | gdb-1c8f6a4d1fcca9e56ac705a224778bf690122a07.zip gdb-1c8f6a4d1fcca9e56ac705a224778bf690122a07.tar.gz gdb-1c8f6a4d1fcca9e56ac705a224778bf690122a07.tar.bz2 | |
NDS32: Code refactoring of relaxation.
Refactor each relaxation pattern to raise the maintainability.
In origin, all patterns is analysed in nds32_elf_relax_section,
so it is hard to debug and maintain. Therefore, we classify all
patterns into different functions in this patch.
Moreover, we adjust all optimizations into nds32_elf_relax_section
to take these optimizations in turn. This can promise all relaxation
being done after calling gld${EMULATION_NAME}_after_allocation.
Diffstat (limited to 'bfd/elf32-nds32.h')
| -rw-r--r-- | bfd/elf32-nds32.h | 40 |
1 files changed, 24 insertions, 16 deletions
diff --git a/bfd/elf32-nds32.h b/bfd/elf32-nds32.h index 9aec0fc..d4d4e93 100644 --- a/bfd/elf32-nds32.h +++ b/bfd/elf32-nds32.h @@ -46,6 +46,7 @@ /* Relocation flags for R_NDS32_INSN16. */ +/* Tag the nop16 can be removed. */ #define R_NDS32_INSN16_CONVERT_FLAG (1 << 0) /* Convert a gp-relative access (e.g., lwi.gp) to fp-as-gp access (lwi37.fp). @@ -67,15 +68,28 @@ in this region due to performance drop. */ #define R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG (1 << 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 +}; + /* Relax tag for nds32_elf_relax_section, we have to specify which optimization do in this round. */ enum { NDS32_RELAX_NONE_ROUND = 0, - NDS32_RELAX_JUMP_IFC_ROUND = 1, + NDS32_RELAX_NORMAL_ROUND, + NDS32_RELAX_JUMP_IFC_ROUND, NDS32_RELAX_EX9_BUILD_ROUND, - NDS32_RELAX_EX9_REPLACE_ROUND - + NDS32_RELAX_EX9_REPLACE_ROUND, + NDS32_RELAX_EMPTY_ROUND }; /* Optimization status mask. */ @@ -85,29 +99,23 @@ enum /* Optimization turn on mask. */ #define NDS32_RELAX_JUMP_IFC_ON (1 << 0) #define NDS32_RELAX_EX9_ON (1 << 1) - -/* The break 0xea defined for ex9 table to keep for trace32 to use 0xeaea. */ -#define INSN_BREAK_EA 0x64001d4a extern void nds32_insertion_sort (void *, size_t, size_t, int (*) (const void *, const void *)); extern int nds32_elf_ex9_init (void); -extern void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *); -extern void nds32_elf_ex9_finish (struct bfd_link_info *); -extern bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *); -extern void nds32_elf_ex9_import_table (struct bfd_link_info *); -extern bfd_boolean nds32_elf_ifc_reloc (void); -extern bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *); 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 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); #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) + == NDS32_ELF_DATA ? \ + ((struct elf_nds32_link_hash_table *) ((info)->hash)) : NULL) /* Hash table structure for target nds32. There are some members to save target options passed from nds32elf.em to bfd. */ |