| /* NDS32-specific support for 32-bit ELF. |
| Copyright (C) 2012-2024 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 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(p) \ |
| ((is_elf_hash_table ((p)->hash) \ |
| && elf_hash_table_id (elf_hash_table (p)) == NDS32_ELF_DATA) \ |
| ? (struct elf_nds32_link_hash_table *) (p)->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; |
| |
| /* 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 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 */ |