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235 lines
7.0 KiB
C
235 lines
7.0 KiB
C
/* tc-aarch64.h -- Header file for tc-aarch64.c.
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Copyright (C) 2009-2014 Free Software Foundation, Inc.
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Contributed by ARM Ltd.
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This file is part of GAS.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the license, or
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(at your option) any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#ifndef TC_AARCH64
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#define TC_AARCH64 1
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#include "opcode/aarch64.h"
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#ifndef TARGET_BYTES_BIG_ENDIAN
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#define TARGET_BYTES_BIG_ENDIAN 0
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#endif
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#define WORKING_DOT_WORD
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#define TARGET_ARCH bfd_arch_aarch64
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#define DIFF_EXPR_OK
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/* Permit // comments. */
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#define DOUBLESLASH_LINE_COMMENTS
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#ifdef LITTLE_ENDIAN
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#undef LITTLE_ENDIAN
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#endif
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#ifdef BIG_ENDIAN
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#undef BIG_ENDIAN
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#endif
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#define LITTLE_ENDIAN 1234
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#define BIG_ENDIAN 4321
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#define SWAP_32(n) \
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((((n) & 0xff) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) \
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| (((n) >> 24) & 0xff))
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struct fix;
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struct aarch64_fix
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{
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struct aarch64_inst *inst;
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enum aarch64_opnd opnd;
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};
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#if defined OBJ_ELF
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# define AARCH64_BI_ENDIAN
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# define TARGET_FORMAT elf64_aarch64_target_format ()
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#endif
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#define TC_FORCE_RELOCATION(FIX) aarch64_force_relocation (FIX)
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/* Currently there is no machine specific frags generated. */
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#define md_convert_frag(b,s,f) as_fatal ("aarch64 convert_frag called\n")
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#define md_cleanup() aarch64_cleanup ()
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#define md_start_line_hook() aarch64_start_line_hook ()
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#define tc_frob_label(S) aarch64_frob_label (S)
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/* We also need to mark assembler created symbols: */
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#define tc_frob_fake_label(S) aarch64_frob_label (S)
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#define TC_FIX_TYPE struct aarch64_fix
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#define TC_INIT_FIX_DATA(FIX) { (FIX)->tc_fix_data.inst = NULL; \
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(FIX)->tc_fix_data.opnd = AARCH64_OPND_NIL; }
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#define TC_SYMFIELD_TYPE unsigned int
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#define AARCH64_GET_FLAG(s) (*symbol_get_tc (s))
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void aarch64_copy_symbol_attributes (symbolS *, symbolS *);
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#ifndef TC_COPY_SYMBOL_ATTRIBUTES
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#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
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(aarch64_copy_symbol_attributes (DEST, SRC))
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#endif
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#define TC_START_LABEL(C,S,STR) ((C) == ':' \
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|| ((C) == '/' && aarch64_data_in_code ()))
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#define tc_canonicalize_symbol_name(str) aarch64_canonicalize_symbol_name (str);
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#define obj_adjust_symtab() aarch64_adjust_symtab ()
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#define LISTING_HEADER "AARCH64 GAS "
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#define LOCAL_LABEL(name) (name[0] == '.' && name[1] == 'L')
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#define LOCAL_LABELS_FB 1
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/* This expression evaluates to true if the relocation is for a local
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object for which we still want to do the relocation at runtime.
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False if we are willing to perform this relocation while building
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the .o file. GOTOFF does not need to be checked here because it is
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not pcrel. I am not sure if some of the others are ever used with
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pcrel, but it is easier to be safe than sorry. */
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#define TC_FORCE_RELOCATION_LOCAL(FIX) \
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(!(FIX)->fx_pcrel \
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|| (FIX)->fx_r_type == BFD_RELOC_64 \
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|| (FIX)->fx_r_type == BFD_RELOC_32 \
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|| TC_FORCE_RELOCATION (FIX))
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#define TC_CONS_FIX_NEW cons_fix_new_aarch64
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/* Max code alignment is 32 bytes */
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#define MAX_MEM_FOR_RS_ALIGN_CODE 31
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/* For frags in code sections we need to record whether they contain
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code or data. */
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struct aarch64_frag_type
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{
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int recorded;
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#ifdef OBJ_ELF
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/* If there is a mapping symbol at offset 0 in this frag,
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it will be saved in FIRST_MAP. If there are any mapping
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symbols in this frag, the last one will be saved in
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LAST_MAP. */
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symbolS *first_map, *last_map;
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#endif
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};
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#define TC_FRAG_TYPE struct aarch64_frag_type
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/* NOTE: max_chars is a local variable from frag_var / frag_variant. */
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#define TC_FRAG_INIT(fragp) aarch64_init_frag (fragp, max_chars)
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#define HANDLE_ALIGN(fragp) aarch64_handle_align (fragp)
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#define md_do_align(N, FILL, LEN, MAX, LABEL) \
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if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
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{ \
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aarch64_frag_align_code (N, MAX); \
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goto LABEL; \
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}
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#define DWARF2_LINE_MIN_INSN_LENGTH 2
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/* The lr register is r30. */
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#define DWARF2_DEFAULT_RETURN_COLUMN 30
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/* Registers are generally saved at negative offsets to the CFA. */
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#define DWARF2_CIE_DATA_ALIGNMENT (-4)
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extern int aarch64_dwarf2_addr_size (void);
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#define DWARF2_ADDR_SIZE(bfd) aarch64_dwarf2_addr_size ()
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#ifdef OBJ_ELF
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# define obj_frob_symbol(sym, punt) aarch64elf_frob_symbol ((sym), & (punt))
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# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
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# define TC_SEGMENT_INFO_TYPE struct aarch64_segment_info_type
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/* This is not really an alignment operation, but it's something we
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need to do at the same time: whenever we are figuring out the
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alignment for data, we should check whether a $d symbol is
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necessary. */
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# define md_cons_align(nbytes) mapping_state (MAP_DATA)
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enum mstate
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{
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MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
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MAP_DATA,
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MAP_INSN,
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};
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void mapping_state (enum mstate);
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struct aarch64_segment_info_type
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{
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enum mstate mapstate;
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unsigned int marked_pr_dependency;
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};
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/* We want .cfi_* pseudo-ops for generating unwind info. */
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#define TARGET_USE_CFIPOP 1
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/* CFI hooks. */
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#define tc_regname_to_dw2regnum tc_aarch64_regname_to_dw2regnum
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#define tc_cfi_frame_initial_instructions tc_aarch64_frame_initial_instructions
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#else /* Not OBJ_ELF. */
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#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
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#endif
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#if defined OBJ_ELF || defined OBJ_COFF
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# define EXTERN_FORCE_RELOC 1
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# define tc_fix_adjustable(FIX) 1
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/* Values passed to md_apply_fix don't include the symbol value. */
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# define MD_APPLY_SYM_VALUE(FIX) 0
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#endif
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#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
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extern long md_pcrel_from_section (struct fix *, segT);
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extern void aarch64_frag_align_code (int, int);
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extern const char * elf64_aarch64_target_format (void);
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extern int aarch64_force_relocation (struct fix *);
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extern void aarch64_cleanup (void);
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extern void aarch64_start_line_hook (void);
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extern void aarch64_frob_label (symbolS *);
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extern int aarch64_data_in_code (void);
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extern char * aarch64_canonicalize_symbol_name (char *);
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extern void aarch64_adjust_symtab (void);
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extern void aarch64elf_frob_symbol (symbolS *, int *);
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extern void cons_fix_new_aarch64 (fragS *, int, int, expressionS *);
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extern void aarch64_init_frag (struct frag *, int);
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extern void aarch64_handle_align (struct frag *);
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extern int tc_aarch64_regname_to_dw2regnum (char *regname);
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extern void tc_aarch64_frame_initial_instructions (void);
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#ifdef TE_PE
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#define O_secrel O_md1
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#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
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void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
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#endif /* TE_PE */
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#endif /* TC_AARCH64 */
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