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b8891f8d62
This patch series is a new binutils port for C-SKY processors, including support for both the V1 and V2 processor variants. V1 is derived from the MCore architecture while V2 is substantially different, with mixed 16- and 32-bit instructions, a larger register set, a different (but overlapping) ABI, etc. There is support for bare-metal ELF targets and Linux with both glibc and uClibc.
This code is being contributed jointly by C-SKY Microsystems and Mentor Graphics. C-SKY is responsible for the technical content and has proposed Lifang Xia and Yunhai Shang as port maintainers. (Note that C-SKY does have a corporate copyright assignment on file with the FSF.) Mentor Graphics' role has been cleaning up the code, adding documentation and additional test cases, etc, to address issues we anticipated reviewers would complain about.
bfd * Makefile.am (ALL_MACHINES, ALL_MACHINES_CFILES): Add C-SKY.
(BFD32_BACKENDS, BFD_BACKENDS_CFILES): Likewise.
* Makefile.in: Regenerated.
* archures.c (enum bfd_architecture): Add bfd_arch_csky and
related bfd_mach defines.
(bfd_csky_arch): Declare.
(bfd_archures_list): Add C-SKY.
* bfd-in.h (elf32_csky_build_stubs): Declare.
(elf32_csky_size_stubs): Declare.
(elf32_csky_next_input_section: Declare.
(elf32_csky_setup_section_lists): Declare.
* bfd-in2.h: Regenerated.
* config.bfd: Add C-SKY.
* configure.ac: Likewise.
* configure: Regenerated.
* cpu-csky.c: New file.
* elf-bfd.h (enum elf_target_id): Add C-SKY.
* elf32-csky.c: New file.
* libbfd.h: Regenerated.
* reloc.c: Add C-SKY relocations.
* targets.c (csky_elf32_be_vec, csky_elf32_le_vec): Declare.
(_bfd_target_vector): Add C-SKY target vector entries.
binutils* readelf.c: Include elf/csky.h.
(guess_is_rela): Handle EM_CSKY.
(dump_relocations): Likewise.
(get_machine_name): Likewise.
(is_32bit_abs_reloc): Likewise.
include * dis-asm.h (csky_symbol_is_valid): Declare.
* opcode/csky.h: New file.
opcodes * Makefile.am (TARGET_LIBOPCODES_CFILES): Add csky-dis.c.
* Makefile.in: Regenerated.
* configure.ac: Add C-SKY.
* configure: Regenerated.
* csky-dis.c: New file.
* csky-opc.h: New file.
* disassemble.c (ARCH_csky): Define.
(disassembler, disassemble_init_for_target): Add case for ARCH_csky.
* disassemble.h (print_insn_csky, csky_get_disassembler): Declare.
gas * Makefile.am (TARGET_CPU_CFILES): Add entry for C-SKY.
(TARGET_CPU_HFILES, TARGET_ENV_HFILES): Likewise.
* Makefile.in: Regenerated.
* config/tc-csky.c: New file.
* config/tc-csky.h: New file.
* config/te-csky_abiv1.h: New file.
* config/te-csky_abiv1_linux.h: New file.
* config/te-csky_abiv2.h: New file.
* config/te-csky_abiv2_linux.h: New file.
* configure.tgt: Add C-SKY.
* doc/Makefile.am (CPU_DOCS): Add entry for C-SKY.
* doc/Makefile.in: Regenerated.
* doc/all.texi: Set CSKY feature.
* doc/as.texi (Overview): Add C-SKY options.
(Machine Dependencies): Likewise.
* doc/c-csky.texi: New file.
* testsuite/gas/csky/*: New test cases.
ld * Makefile.am (ALL_EMULATION_SOURCES): Add C-SKY emulations.
(ecskyelf.c, ecskyelf_linux.c): New rules.
* Makefile.in: Regenerated.
* configure.tgt: Add C-SKY.
* emulparams/cskyelf.sh: New file.
* emulparams/cskyelf_linux.sh: New file.
* emultempl/cskyelf.em: New file.
* gen-doc.texi: Add C-SKY.
* ld.texi: Likewise.
(Options specific to C-SKY targets): New section.
* testsuite/ld-csky/*: New tests.
736 lines
15 KiB
C
736 lines
15 KiB
C
/* Select disassembly routine for specified architecture.
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Copyright (C) 1994-2018 Free Software Foundation, Inc.
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This file is part of the GNU opcodes library.
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This library 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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This program 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; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "disassemble.h"
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#include "safe-ctype.h"
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#include <assert.h>
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#ifdef ARCH_all
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#define ARCH_aarch64
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#define ARCH_alpha
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#define ARCH_arc
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#define ARCH_arm
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#define ARCH_avr
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#define ARCH_bfin
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#define ARCH_cr16
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#define ARCH_cris
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#define ARCH_crx
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#define ARCH_csky
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#define ARCH_d10v
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#define ARCH_d30v
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#define ARCH_dlx
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#define ARCH_epiphany
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#define ARCH_fr30
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#define ARCH_frv
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#define ARCH_ft32
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#define ARCH_h8300
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#define ARCH_hppa
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#define ARCH_i386
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#define ARCH_ia64
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#define ARCH_ip2k
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#define ARCH_iq2000
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#define ARCH_lm32
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#define ARCH_m32c
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#define ARCH_m32r
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#define ARCH_m68hc11
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#define ARCH_m68hc12
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#define ARCH_m68k
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#define ARCH_mcore
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#define ARCH_mep
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#define ARCH_metag
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#define ARCH_microblaze
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#define ARCH_mips
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#define ARCH_mmix
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#define ARCH_mn10200
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#define ARCH_mn10300
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#define ARCH_moxie
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#define ARCH_mt
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#define ARCH_msp430
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#define ARCH_nds32
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#define ARCH_nfp
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#define ARCH_nios2
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#define ARCH_ns32k
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#define ARCH_or1k
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#define ARCH_pdp11
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#define ARCH_pj
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#define ARCH_powerpc
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#define ARCH_pru
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#define ARCH_riscv
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#define ARCH_rs6000
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#define ARCH_rl78
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#define ARCH_rx
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#define ARCH_s390
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#define ARCH_score
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#define ARCH_sh
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#define ARCH_sparc
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#define ARCH_spu
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#define ARCH_tic30
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#define ARCH_tic4x
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#define ARCH_tic54x
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#define ARCH_tic6x
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#define ARCH_tic80
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#define ARCH_tilegx
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#define ARCH_tilepro
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#define ARCH_v850
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#define ARCH_vax
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#define ARCH_visium
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#define ARCH_wasm32
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#define ARCH_xstormy16
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#define ARCH_xc16x
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#define ARCH_xgate
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#define ARCH_xtensa
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#define ARCH_z80
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#define ARCH_z8k
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#endif
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#ifdef ARCH_m32c
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#include "m32c-desc.h"
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#endif
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disassembler_ftype
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disassembler (enum bfd_architecture a,
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bfd_boolean big ATTRIBUTE_UNUSED,
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unsigned long mach ATTRIBUTE_UNUSED,
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bfd *abfd ATTRIBUTE_UNUSED)
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{
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disassembler_ftype disassemble;
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switch (a)
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{
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/* If you add a case to this table, also add it to the
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ARCH_all definition right above this function. */
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#ifdef ARCH_aarch64
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case bfd_arch_aarch64:
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disassemble = print_insn_aarch64;
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break;
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#endif
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#ifdef ARCH_alpha
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case bfd_arch_alpha:
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disassemble = print_insn_alpha;
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break;
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#endif
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#ifdef ARCH_arc
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case bfd_arch_arc:
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disassemble = arc_get_disassembler (abfd);
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break;
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#endif
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#ifdef ARCH_arm
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case bfd_arch_arm:
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if (big)
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disassemble = print_insn_big_arm;
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else
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disassemble = print_insn_little_arm;
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break;
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#endif
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#ifdef ARCH_avr
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case bfd_arch_avr:
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disassemble = print_insn_avr;
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break;
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#endif
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#ifdef ARCH_bfin
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case bfd_arch_bfin:
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disassemble = print_insn_bfin;
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break;
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#endif
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#ifdef ARCH_cr16
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case bfd_arch_cr16:
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disassemble = print_insn_cr16;
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break;
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#endif
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#ifdef ARCH_cris
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case bfd_arch_cris:
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disassemble = cris_get_disassembler (abfd);
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break;
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#endif
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#ifdef ARCH_crx
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case bfd_arch_crx:
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disassemble = print_insn_crx;
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break;
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#endif
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#ifdef ARCH_csky
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case bfd_arch_csky:
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disassemble = csky_get_disassembler (abfd);
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break;
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#endif
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#ifdef ARCH_d10v
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case bfd_arch_d10v:
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disassemble = print_insn_d10v;
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break;
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#endif
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#ifdef ARCH_d30v
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case bfd_arch_d30v:
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disassemble = print_insn_d30v;
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break;
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#endif
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#ifdef ARCH_dlx
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case bfd_arch_dlx:
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/* As far as I know we only handle big-endian DLX objects. */
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disassemble = print_insn_dlx;
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break;
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#endif
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#ifdef ARCH_h8300
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case bfd_arch_h8300:
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if (mach == bfd_mach_h8300h || mach == bfd_mach_h8300hn)
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disassemble = print_insn_h8300h;
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else if (mach == bfd_mach_h8300s
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|| mach == bfd_mach_h8300sn
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|| mach == bfd_mach_h8300sx
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|| mach == bfd_mach_h8300sxn)
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disassemble = print_insn_h8300s;
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else
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disassemble = print_insn_h8300;
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break;
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#endif
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#ifdef ARCH_hppa
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case bfd_arch_hppa:
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disassemble = print_insn_hppa;
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break;
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#endif
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#ifdef ARCH_i386
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case bfd_arch_i386:
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case bfd_arch_iamcu:
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case bfd_arch_l1om:
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case bfd_arch_k1om:
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disassemble = print_insn_i386;
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break;
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#endif
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#ifdef ARCH_ia64
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case bfd_arch_ia64:
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disassemble = print_insn_ia64;
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break;
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#endif
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#ifdef ARCH_ip2k
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case bfd_arch_ip2k:
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disassemble = print_insn_ip2k;
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break;
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#endif
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#ifdef ARCH_epiphany
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case bfd_arch_epiphany:
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disassemble = print_insn_epiphany;
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break;
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#endif
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#ifdef ARCH_fr30
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case bfd_arch_fr30:
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disassemble = print_insn_fr30;
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break;
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#endif
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#ifdef ARCH_lm32
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case bfd_arch_lm32:
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disassemble = print_insn_lm32;
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break;
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#endif
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#ifdef ARCH_m32r
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case bfd_arch_m32r:
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disassemble = print_insn_m32r;
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break;
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#endif
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#if defined(ARCH_m68hc11) || defined(ARCH_m68hc12) \
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|| defined(ARCH_9s12x) || defined(ARCH_m9s12xg)
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case bfd_arch_m68hc11:
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disassemble = print_insn_m68hc11;
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break;
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case bfd_arch_m68hc12:
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disassemble = print_insn_m68hc12;
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break;
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case bfd_arch_m9s12x:
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disassemble = print_insn_m9s12x;
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break;
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case bfd_arch_m9s12xg:
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disassemble = print_insn_m9s12xg;
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break;
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#endif
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#if defined(ARCH_s12z)
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case bfd_arch_s12z:
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disassemble = print_insn_s12z;
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break;
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#endif
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#ifdef ARCH_m68k
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case bfd_arch_m68k:
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disassemble = print_insn_m68k;
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break;
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#endif
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#ifdef ARCH_mt
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case bfd_arch_mt:
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disassemble = print_insn_mt;
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break;
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#endif
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#ifdef ARCH_microblaze
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case bfd_arch_microblaze:
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disassemble = print_insn_microblaze;
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break;
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#endif
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#ifdef ARCH_msp430
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case bfd_arch_msp430:
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disassemble = print_insn_msp430;
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break;
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#endif
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#ifdef ARCH_nds32
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case bfd_arch_nds32:
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disassemble = print_insn_nds32;
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break;
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#endif
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#ifdef ARCH_nfp
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case bfd_arch_nfp:
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disassemble = print_insn_nfp;
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break;
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#endif
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#ifdef ARCH_ns32k
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case bfd_arch_ns32k:
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disassemble = print_insn_ns32k;
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break;
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#endif
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#ifdef ARCH_mcore
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case bfd_arch_mcore:
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disassemble = print_insn_mcore;
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break;
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#endif
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#ifdef ARCH_mep
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case bfd_arch_mep:
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disassemble = print_insn_mep;
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break;
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#endif
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#ifdef ARCH_metag
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case bfd_arch_metag:
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disassemble = print_insn_metag;
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break;
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#endif
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#ifdef ARCH_mips
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case bfd_arch_mips:
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if (big)
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disassemble = print_insn_big_mips;
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else
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disassemble = print_insn_little_mips;
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break;
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#endif
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#ifdef ARCH_mmix
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case bfd_arch_mmix:
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disassemble = print_insn_mmix;
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break;
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#endif
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#ifdef ARCH_mn10200
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case bfd_arch_mn10200:
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disassemble = print_insn_mn10200;
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break;
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#endif
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#ifdef ARCH_mn10300
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case bfd_arch_mn10300:
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disassemble = print_insn_mn10300;
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break;
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#endif
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#ifdef ARCH_nios2
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case bfd_arch_nios2:
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if (big)
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disassemble = print_insn_big_nios2;
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else
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disassemble = print_insn_little_nios2;
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break;
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#endif
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#ifdef ARCH_or1k
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case bfd_arch_or1k:
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disassemble = print_insn_or1k;
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break;
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#endif
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#ifdef ARCH_pdp11
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case bfd_arch_pdp11:
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disassemble = print_insn_pdp11;
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break;
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#endif
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#ifdef ARCH_pj
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case bfd_arch_pj:
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disassemble = print_insn_pj;
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break;
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#endif
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#ifdef ARCH_powerpc
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case bfd_arch_powerpc:
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#endif
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#ifdef ARCH_rs6000
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case bfd_arch_rs6000:
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#endif
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#if defined ARCH_powerpc || defined ARCH_rs6000
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if (big)
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disassemble = print_insn_big_powerpc;
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else
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disassemble = print_insn_little_powerpc;
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break;
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#endif
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#ifdef ARCH_pru
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case bfd_arch_pru:
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disassemble = print_insn_pru;
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break;
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#endif
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#ifdef ARCH_riscv
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case bfd_arch_riscv:
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disassemble = print_insn_riscv;
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break;
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#endif
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#ifdef ARCH_rl78
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case bfd_arch_rl78:
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disassemble = rl78_get_disassembler (abfd);
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break;
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#endif
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#ifdef ARCH_rx
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case bfd_arch_rx:
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disassemble = print_insn_rx;
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break;
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#endif
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#ifdef ARCH_s390
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case bfd_arch_s390:
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disassemble = print_insn_s390;
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break;
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#endif
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#ifdef ARCH_score
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case bfd_arch_score:
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if (big)
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disassemble = print_insn_big_score;
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else
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disassemble = print_insn_little_score;
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break;
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#endif
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#ifdef ARCH_sh
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case bfd_arch_sh:
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disassemble = print_insn_sh;
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break;
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#endif
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#ifdef ARCH_sparc
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case bfd_arch_sparc:
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disassemble = print_insn_sparc;
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break;
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#endif
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#ifdef ARCH_spu
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case bfd_arch_spu:
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disassemble = print_insn_spu;
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break;
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#endif
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#ifdef ARCH_tic30
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case bfd_arch_tic30:
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disassemble = print_insn_tic30;
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break;
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#endif
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#ifdef ARCH_tic4x
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case bfd_arch_tic4x:
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disassemble = print_insn_tic4x;
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break;
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#endif
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#ifdef ARCH_tic54x
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case bfd_arch_tic54x:
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disassemble = print_insn_tic54x;
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break;
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#endif
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#ifdef ARCH_tic6x
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case bfd_arch_tic6x:
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disassemble = print_insn_tic6x;
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break;
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#endif
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#ifdef ARCH_tic80
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case bfd_arch_tic80:
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disassemble = print_insn_tic80;
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break;
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#endif
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#ifdef ARCH_ft32
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case bfd_arch_ft32:
|
|
disassemble = print_insn_ft32;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_v850
|
|
case bfd_arch_v850:
|
|
case bfd_arch_v850_rh850:
|
|
disassemble = print_insn_v850;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_wasm32
|
|
case bfd_arch_wasm32:
|
|
disassemble = print_insn_wasm32;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_xgate
|
|
case bfd_arch_xgate:
|
|
disassemble = print_insn_xgate;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_xstormy16
|
|
case bfd_arch_xstormy16:
|
|
disassemble = print_insn_xstormy16;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_xc16x
|
|
case bfd_arch_xc16x:
|
|
disassemble = print_insn_xc16x;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_xtensa
|
|
case bfd_arch_xtensa:
|
|
disassemble = print_insn_xtensa;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_z80
|
|
case bfd_arch_z80:
|
|
disassemble = print_insn_z80;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_z8k
|
|
case bfd_arch_z8k:
|
|
if (mach == bfd_mach_z8001)
|
|
disassemble = print_insn_z8001;
|
|
else
|
|
disassemble = print_insn_z8002;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_vax
|
|
case bfd_arch_vax:
|
|
disassemble = print_insn_vax;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_visium
|
|
case bfd_arch_visium:
|
|
disassemble = print_insn_visium;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_frv
|
|
case bfd_arch_frv:
|
|
disassemble = print_insn_frv;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_moxie
|
|
case bfd_arch_moxie:
|
|
disassemble = print_insn_moxie;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_iq2000
|
|
case bfd_arch_iq2000:
|
|
disassemble = print_insn_iq2000;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_m32c
|
|
case bfd_arch_m32c:
|
|
disassemble = print_insn_m32c;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_tilegx
|
|
case bfd_arch_tilegx:
|
|
disassemble = print_insn_tilegx;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_tilepro
|
|
case bfd_arch_tilepro:
|
|
disassemble = print_insn_tilepro;
|
|
break;
|
|
#endif
|
|
default:
|
|
return 0;
|
|
}
|
|
return disassemble;
|
|
}
|
|
|
|
void
|
|
disassembler_usage (FILE *stream ATTRIBUTE_UNUSED)
|
|
{
|
|
#ifdef ARCH_aarch64
|
|
print_aarch64_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_arc
|
|
print_arc_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_arm
|
|
print_arm_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_mips
|
|
print_mips_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_nfp
|
|
print_nfp_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_powerpc
|
|
print_ppc_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_riscv
|
|
print_riscv_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_i386
|
|
print_i386_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_s390
|
|
print_s390_disassembler_options (stream);
|
|
#endif
|
|
#ifdef ARCH_wasm32
|
|
print_wasm32_disassembler_options (stream);
|
|
#endif
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
disassemble_init_for_target (struct disassemble_info * info)
|
|
{
|
|
if (info == NULL)
|
|
return;
|
|
|
|
switch (info->arch)
|
|
{
|
|
#ifdef ARCH_aarch64
|
|
case bfd_arch_aarch64:
|
|
info->symbol_is_valid = aarch64_symbol_is_valid;
|
|
info->disassembler_needs_relocs = TRUE;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_arm
|
|
case bfd_arch_arm:
|
|
info->symbol_is_valid = arm_symbol_is_valid;
|
|
info->disassembler_needs_relocs = TRUE;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_csky
|
|
case bfd_arch_csky:
|
|
info->symbol_is_valid = csky_symbol_is_valid;
|
|
info->disassembler_needs_relocs = TRUE;
|
|
break;
|
|
#endif
|
|
|
|
#ifdef ARCH_ia64
|
|
case bfd_arch_ia64:
|
|
info->skip_zeroes = 16;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_tic4x
|
|
case bfd_arch_tic4x:
|
|
info->skip_zeroes = 32;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_mep
|
|
case bfd_arch_mep:
|
|
info->skip_zeroes = 256;
|
|
info->skip_zeroes_at_end = 0;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_metag
|
|
case bfd_arch_metag:
|
|
info->disassembler_needs_relocs = TRUE;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_m32c
|
|
case bfd_arch_m32c:
|
|
/* This processor in fact is little endian. The value set here
|
|
reflects the way opcodes are written in the cgen description. */
|
|
info->endian = BFD_ENDIAN_BIG;
|
|
if (! info->insn_sets)
|
|
{
|
|
info->insn_sets = cgen_bitset_create (ISA_MAX);
|
|
if (info->mach == bfd_mach_m16c)
|
|
cgen_bitset_set (info->insn_sets, ISA_M16C);
|
|
else
|
|
cgen_bitset_set (info->insn_sets, ISA_M32C);
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_pru
|
|
case bfd_arch_pru:
|
|
info->disassembler_needs_relocs = TRUE;
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_powerpc
|
|
case bfd_arch_powerpc:
|
|
#endif
|
|
#ifdef ARCH_rs6000
|
|
case bfd_arch_rs6000:
|
|
#endif
|
|
#if defined (ARCH_powerpc) || defined (ARCH_rs6000)
|
|
disassemble_init_powerpc (info);
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_wasm32
|
|
case bfd_arch_wasm32:
|
|
disassemble_init_wasm32 (info);
|
|
break;
|
|
#endif
|
|
#ifdef ARCH_s390
|
|
case bfd_arch_s390:
|
|
disassemble_init_s390 (info);
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Remove whitespace and consecutive commas from OPTIONS. */
|
|
|
|
char *
|
|
remove_whitespace_and_extra_commas (char *options)
|
|
{
|
|
char *str;
|
|
size_t i, len;
|
|
|
|
if (options == NULL)
|
|
return NULL;
|
|
|
|
/* Strip off all trailing whitespace and commas. */
|
|
for (len = strlen (options); len > 0; len--)
|
|
{
|
|
if (!ISSPACE (options[len - 1]) && options[len - 1] != ',')
|
|
break;
|
|
options[len - 1] = '\0';
|
|
}
|
|
|
|
/* Convert all remaining whitespace to commas. */
|
|
for (i = 0; options[i] != '\0'; i++)
|
|
if (ISSPACE (options[i]))
|
|
options[i] = ',';
|
|
|
|
/* Remove consecutive commas. */
|
|
for (str = options; *str != '\0'; str++)
|
|
if (*str == ',' && (*(str + 1) == ',' || str == options))
|
|
{
|
|
char *next = str + 1;
|
|
while (*next == ',')
|
|
next++;
|
|
len = strlen (next);
|
|
if (str != options)
|
|
str++;
|
|
memmove (str, next, len);
|
|
next[len - (size_t)(next - str)] = '\0';
|
|
}
|
|
return (strlen (options) != 0) ? options : NULL;
|
|
}
|
|
|
|
/* Like STRCMP, but treat ',' the same as '\0' so that we match
|
|
strings like "foobar" against "foobar,xxyyzz,...". */
|
|
|
|
int
|
|
disassembler_options_cmp (const char *s1, const char *s2)
|
|
{
|
|
unsigned char c1, c2;
|
|
|
|
do
|
|
{
|
|
c1 = (unsigned char) *s1++;
|
|
if (c1 == ',')
|
|
c1 = '\0';
|
|
c2 = (unsigned char) *s2++;
|
|
if (c2 == ',')
|
|
c2 = '\0';
|
|
if (c1 == '\0')
|
|
return c1 - c2;
|
|
}
|
|
while (c1 == c2);
|
|
|
|
return c1 - c2;
|
|
}
|