mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-28 05:51:04 +00:00
240 lines
7.3 KiB
C
240 lines
7.3 KiB
C
/* tc-aarch64.h -- Header file for tc-aarch64.c.
|
|
Copyright (C) 2009-2017 Free Software Foundation, Inc.
|
|
Contributed by ARM Ltd.
|
|
|
|
This file is part of GAS.
|
|
|
|
GAS 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.
|
|
|
|
GAS 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; see the file COPYING3. If not,
|
|
see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef TC_AARCH64
|
|
#define TC_AARCH64 1
|
|
|
|
#include "opcode/aarch64.h"
|
|
|
|
#ifndef TARGET_BYTES_BIG_ENDIAN
|
|
#define TARGET_BYTES_BIG_ENDIAN 0
|
|
#endif
|
|
|
|
#define WORKING_DOT_WORD
|
|
|
|
#define TARGET_ARCH bfd_arch_aarch64
|
|
|
|
#define DIFF_EXPR_OK
|
|
|
|
/* Permit // comments. */
|
|
#define DOUBLESLASH_LINE_COMMENTS
|
|
|
|
#ifdef LITTLE_ENDIAN
|
|
#undef LITTLE_ENDIAN
|
|
#endif
|
|
|
|
#ifdef BIG_ENDIAN
|
|
#undef BIG_ENDIAN
|
|
#endif
|
|
|
|
#define LITTLE_ENDIAN 1234
|
|
#define BIG_ENDIAN 4321
|
|
|
|
#define SWAP_32(n) \
|
|
((((n) & 0xff) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) \
|
|
| (((n) >> 24) & 0xff))
|
|
|
|
struct fix;
|
|
|
|
struct aarch64_fix
|
|
{
|
|
struct aarch64_inst *inst;
|
|
enum aarch64_opnd opnd;
|
|
};
|
|
|
|
#if defined OBJ_ELF
|
|
# define AARCH64_BI_ENDIAN
|
|
# define TARGET_FORMAT elf64_aarch64_target_format ()
|
|
#endif
|
|
|
|
#define TC_FORCE_RELOCATION(FIX) aarch64_force_relocation (FIX)
|
|
|
|
/* Currently there is no machine specific frags generated. */
|
|
#define md_convert_frag(b,s,f) as_fatal ("aarch64 convert_frag called\n")
|
|
|
|
#define md_cleanup() aarch64_cleanup ()
|
|
|
|
#define md_start_line_hook() aarch64_start_line_hook ()
|
|
|
|
#define tc_frob_label(S) aarch64_frob_label (S)
|
|
|
|
/* We also need to mark assembler created symbols: */
|
|
#define tc_frob_fake_label(S) aarch64_frob_label (S)
|
|
|
|
#define TC_FIX_TYPE struct aarch64_fix
|
|
#define TC_INIT_FIX_DATA(FIX) { (FIX)->tc_fix_data.inst = NULL; \
|
|
(FIX)->tc_fix_data.opnd = AARCH64_OPND_NIL; }
|
|
|
|
#define TC_SYMFIELD_TYPE unsigned int
|
|
#define AARCH64_GET_FLAG(s) (*symbol_get_tc (s))
|
|
|
|
void aarch64_copy_symbol_attributes (symbolS *, symbolS *);
|
|
#ifndef TC_COPY_SYMBOL_ATTRIBUTES
|
|
#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
|
|
(aarch64_copy_symbol_attributes (DEST, SRC))
|
|
#endif
|
|
|
|
#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) \
|
|
(NEXT_CHAR == ':' || (NEXT_CHAR == '/' && aarch64_data_in_code ()))
|
|
#define tc_canonicalize_symbol_name(str) aarch64_canonicalize_symbol_name (str);
|
|
#define obj_adjust_symtab() aarch64_adjust_symtab ()
|
|
|
|
#define LISTING_HEADER "AARCH64 GAS "
|
|
|
|
#define LOCAL_LABEL(name) (name[0] == '.' && name[1] == 'L')
|
|
#define LOCAL_LABELS_FB 1
|
|
|
|
/* This expression evaluates to true if the relocation is for a local
|
|
object for which we still want to do the relocation at runtime.
|
|
False if we are willing to perform this relocation while building
|
|
the .o file. GOTOFF does not need to be checked here because it is
|
|
not pcrel. I am not sure if some of the others are ever used with
|
|
pcrel, but it is easier to be safe than sorry. */
|
|
|
|
#define TC_FORCE_RELOCATION_LOCAL(FIX) \
|
|
(GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
|
|
|| (FIX)->fx_r_type == BFD_RELOC_64 \
|
|
|| (FIX)->fx_r_type == BFD_RELOC_32)
|
|
|
|
#define TC_CONS_FIX_NEW(f,w,s,e,r) cons_fix_new_aarch64 ((f), (w), (s), (e))
|
|
|
|
/* Max space for a rs_align_code fragment is 3 unaligned bytes
|
|
(fr_fix) plus 4 bytes to contain the repeating NOP (fr_var). */
|
|
#define MAX_MEM_FOR_RS_ALIGN_CODE 7
|
|
|
|
/* For frags in code sections we need to record whether they contain
|
|
code or data. */
|
|
struct aarch64_frag_type
|
|
{
|
|
int recorded;
|
|
#ifdef OBJ_ELF
|
|
/* If there is a mapping symbol at offset 0 in this frag,
|
|
it will be saved in FIRST_MAP. If there are any mapping
|
|
symbols in this frag, the last one will be saved in
|
|
LAST_MAP. */
|
|
symbolS *first_map, *last_map;
|
|
#endif
|
|
};
|
|
|
|
#define TC_FRAG_TYPE struct aarch64_frag_type
|
|
/* NOTE: max_chars is a local variable from frag_var / frag_variant. */
|
|
#define TC_FRAG_INIT(fragp) aarch64_init_frag (fragp, max_chars)
|
|
#define HANDLE_ALIGN(fragp) aarch64_handle_align (fragp)
|
|
|
|
#define md_do_align(N, FILL, LEN, MAX, LABEL) \
|
|
if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
|
|
{ \
|
|
frag_align_code (N, MAX); \
|
|
goto LABEL; \
|
|
}
|
|
|
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
|
|
|
|
#define DWARF2_LINE_MIN_INSN_LENGTH 4
|
|
|
|
/* The lr register is r30. */
|
|
#define DWARF2_DEFAULT_RETURN_COLUMN 30
|
|
|
|
/* Registers are generally saved at negative offsets to the CFA. */
|
|
#define DWARF2_CIE_DATA_ALIGNMENT (-8)
|
|
|
|
extern int aarch64_dwarf2_addr_size (void);
|
|
#define DWARF2_ADDR_SIZE(bfd) aarch64_dwarf2_addr_size ()
|
|
|
|
#ifdef OBJ_ELF
|
|
# define obj_frob_symbol(sym, punt) aarch64elf_frob_symbol ((sym), & (punt))
|
|
|
|
# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
|
|
# define TC_SEGMENT_INFO_TYPE struct aarch64_segment_info_type
|
|
|
|
/* This is not really an alignment operation, but it's something we
|
|
need to do at the same time: whenever we are figuring out the
|
|
alignment for data, we should check whether a $d symbol is
|
|
necessary. */
|
|
# define md_cons_align(nbytes) mapping_state (MAP_DATA)
|
|
|
|
enum mstate
|
|
{
|
|
MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
|
|
MAP_DATA,
|
|
MAP_INSN,
|
|
};
|
|
|
|
void mapping_state (enum mstate);
|
|
|
|
struct aarch64_segment_info_type
|
|
{
|
|
enum mstate mapstate;
|
|
unsigned int marked_pr_dependency;
|
|
};
|
|
|
|
/* We want .cfi_* pseudo-ops for generating unwind info. */
|
|
#define TARGET_USE_CFIPOP 1
|
|
|
|
/* CFI hooks. */
|
|
#define tc_regname_to_dw2regnum tc_aarch64_regname_to_dw2regnum
|
|
#define tc_cfi_frame_initial_instructions tc_aarch64_frame_initial_instructions
|
|
|
|
extern void aarch64_after_parse_args (void);
|
|
#define md_after_parse_args() aarch64_after_parse_args ()
|
|
|
|
#else /* Not OBJ_ELF. */
|
|
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
|
|
#endif
|
|
|
|
#if defined OBJ_ELF || defined OBJ_COFF
|
|
|
|
# define EXTERN_FORCE_RELOC 1
|
|
# define tc_fix_adjustable(FIX) 1
|
|
/* Values passed to md_apply_fix don't include the symbol value. */
|
|
# define MD_APPLY_SYM_VALUE(FIX) 0
|
|
|
|
#endif
|
|
|
|
#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
|
|
|
|
extern long md_pcrel_from_section (struct fix *, segT);
|
|
extern void aarch64_frag_align_code (int, int);
|
|
extern const char * elf64_aarch64_target_format (void);
|
|
extern int aarch64_force_relocation (struct fix *);
|
|
extern void aarch64_cleanup (void);
|
|
extern void aarch64_start_line_hook (void);
|
|
extern void aarch64_frob_label (symbolS *);
|
|
extern int aarch64_data_in_code (void);
|
|
extern char * aarch64_canonicalize_symbol_name (char *);
|
|
extern void aarch64_adjust_symtab (void);
|
|
extern void aarch64elf_frob_symbol (symbolS *, int *);
|
|
extern void cons_fix_new_aarch64 (fragS *, int, int, expressionS *);
|
|
extern void aarch64_init_frag (struct frag *, int);
|
|
extern void aarch64_handle_align (struct frag *);
|
|
extern int tc_aarch64_regname_to_dw2regnum (char *regname);
|
|
extern void tc_aarch64_frame_initial_instructions (void);
|
|
|
|
#ifdef TE_PE
|
|
|
|
#define O_secrel O_md1
|
|
|
|
#define TC_DWARF2_EMIT_OFFSET tc_pe_dwarf2_emit_offset
|
|
void tc_pe_dwarf2_emit_offset (symbolS *, unsigned int);
|
|
|
|
#endif /* TE_PE */
|
|
|
|
#endif /* TC_AARCH64 */
|