diff options
Diffstat (limited to 'binutils-2.25/bfd/elf32-nds32.h')
| -rw-r--r-- | binutils-2.25/bfd/elf32-nds32.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/elf32-nds32.h b/binutils-2.25/bfd/elf32-nds32.h new file mode 100644 index 00000000..d4d4e934 --- /dev/null +++ b/binutils-2.25/bfd/elf32-nds32.h @@ -0,0 +1,155 @@ +/* NDS32-specific support for 32-bit ELF. + Copyright (C) 2012-2014 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 + +/* 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) +/* Optimize for performance. */ +#define R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG (1 << 30) +/* Optimize for size. Branch destination 4-byte adjustment + may be disabled. */ +#define R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG (1 << 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) + + +/* 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). + This value is used by linker internally only. + It's fine to change the vlaue. */ +#define R_NDS32_INSN16_FP7U2_FLAG (1 << 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) +/* 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) +/* 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) + +/* 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_NORMAL_ROUND, + NDS32_RELAX_JUMP_IFC_ROUND, + NDS32_RELAX_EX9_BUILD_ROUND, + NDS32_RELAX_EX9_REPLACE_ROUND, + NDS32_RELAX_EMPTY_ROUND +}; + +/* 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 void nds32_insertion_sort + (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); + +#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) + +/* 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 *sgot; + asection *sgotplt; + asection *srelgot; + asection *splt; + asection *srelplt; + 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> */ + /* 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. */ +}; +#endif |