| [444] | 1 | /* Interface between the opcode library and its callers. |
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| 2 | |
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| 3 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009, 2010, |
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| 4 | 2011, 2012 Free Software Foundation, Inc. |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 3, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | This program is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with this program; if not, write to the Free Software |
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| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, |
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| 19 | Boston, MA 02110-1301, USA. |
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| 20 | |
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| 21 | Written by Cygnus Support, 1993. |
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| 22 | |
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| 23 | The opcode library (libopcodes.a) provides instruction decoders for |
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| 24 | a large variety of instruction sets, callable with an identical |
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| 25 | interface, for making instruction-processing programs more independent |
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| 26 | of the instruction set being processed. */ |
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| 27 | |
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| 28 | #ifndef DIS_ASM_H |
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| 29 | #define DIS_ASM_H |
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| 30 | |
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| 31 | #ifdef __cplusplus |
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| 32 | extern "C" { |
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| 33 | #endif |
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| 34 | |
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| 35 | #include <stdio.h> |
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| 36 | #include "bfd.h" |
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| 37 | |
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| 38 | typedef int (*fprintf_ftype) (void *, const char*, ...) ATTRIBUTE_FPTR_PRINTF_2; |
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| 39 | |
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| 40 | enum dis_insn_type |
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| 41 | { |
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| 42 | dis_noninsn, /* Not a valid instruction. */ |
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| 43 | dis_nonbranch, /* Not a branch instruction. */ |
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| 44 | dis_branch, /* Unconditional branch. */ |
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| 45 | dis_condbranch, /* Conditional branch. */ |
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| 46 | dis_jsr, /* Jump to subroutine. */ |
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| 47 | dis_condjsr, /* Conditional jump to subroutine. */ |
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| 48 | dis_dref, /* Data reference instruction. */ |
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| 49 | dis_dref2 /* Two data references in instruction. */ |
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| 50 | }; |
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| 51 | |
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| 52 | /* This struct is passed into the instruction decoding routine, |
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| 53 | and is passed back out into each callback. The various fields are used |
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| 54 | for conveying information from your main routine into your callbacks, |
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| 55 | for passing information into the instruction decoders (such as the |
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| 56 | addresses of the callback functions), or for passing information |
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| 57 | back from the instruction decoders to their callers. |
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| 58 | |
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| 59 | It must be initialized before it is first passed; this can be done |
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| 60 | by hand, or using one of the initialization macros below. */ |
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| 61 | |
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| 62 | typedef struct disassemble_info |
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| 63 | { |
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| 64 | fprintf_ftype fprintf_func; |
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| 65 | void *stream; |
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| 66 | void *application_data; |
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| 67 | |
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| 68 | /* Target description. We could replace this with a pointer to the bfd, |
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| 69 | but that would require one. There currently isn't any such requirement |
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| 70 | so to avoid introducing one we record these explicitly. */ |
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| 71 | /* The bfd_flavour. This can be bfd_target_unknown_flavour. */ |
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| 72 | enum bfd_flavour flavour; |
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| 73 | /* The bfd_arch value. */ |
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| 74 | enum bfd_architecture arch; |
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| 75 | /* The bfd_mach value. */ |
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| 76 | unsigned long mach; |
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| 77 | /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */ |
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| 78 | enum bfd_endian endian; |
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| 79 | /* Endianness of code, for mixed-endian situations such as ARM BE8. */ |
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| 80 | enum bfd_endian endian_code; |
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| 81 | /* An arch/mach-specific bitmask of selected instruction subsets, mainly |
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| 82 | for processors with run-time-switchable instruction sets. The default, |
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| 83 | zero, means that there is no constraint. CGEN-based opcodes ports |
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| 84 | may use ISA_foo masks. */ |
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| 85 | void *insn_sets; |
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| 86 | |
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| 87 | /* Some targets need information about the current section to accurately |
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| 88 | display insns. If this is NULL, the target disassembler function |
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| 89 | will have to make its best guess. */ |
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| 90 | asection *section; |
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| 91 | |
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| 92 | /* An array of pointers to symbols either at the location being disassembled |
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| 93 | or at the start of the function being disassembled. The array is sorted |
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| 94 | so that the first symbol is intended to be the one used. The others are |
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| 95 | present for any misc. purposes. This is not set reliably, but if it is |
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| 96 | not NULL, it is correct. */ |
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| 97 | asymbol **symbols; |
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| 98 | /* Number of symbols in array. */ |
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| 99 | int num_symbols; |
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| 100 | |
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| 101 | /* Symbol table provided for targets that want to look at it. This is |
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| 102 | used on Arm to find mapping symbols and determine Arm/Thumb code. */ |
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| 103 | asymbol **symtab; |
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| 104 | int symtab_pos; |
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| 105 | int symtab_size; |
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| 106 | |
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| 107 | /* For use by the disassembler. |
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| 108 | The top 16 bits are reserved for public use (and are documented here). |
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| 109 | The bottom 16 bits are for the internal use of the disassembler. */ |
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| 110 | unsigned long flags; |
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| 111 | /* Set if the disassembler has determined that there are one or more |
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| 112 | relocations associated with the instruction being disassembled. */ |
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| 113 | #define INSN_HAS_RELOC (1 << 31) |
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| 114 | /* Set if the user has requested the disassembly of data as well as code. */ |
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| 115 | #define DISASSEMBLE_DATA (1 << 30) |
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| 116 | /* Set if the user has specifically set the machine type encoded in the |
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| 117 | mach field of this structure. */ |
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| 118 | #define USER_SPECIFIED_MACHINE_TYPE (1 << 29) |
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| 119 | |
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| 120 | /* Use internally by the target specific disassembly code. */ |
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| 121 | void *private_data; |
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| 122 | |
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| 123 | /* Function used to get bytes to disassemble. MEMADDR is the |
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| 124 | address of the stuff to be disassembled, MYADDR is the address to |
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| 125 | put the bytes in, and LENGTH is the number of bytes to read. |
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| 126 | INFO is a pointer to this struct. |
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| 127 | Returns an errno value or 0 for success. */ |
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| 128 | int (*read_memory_func) |
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| 129 | (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length, |
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| 130 | struct disassemble_info *dinfo); |
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| 131 | |
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| 132 | /* Function which should be called if we get an error that we can't |
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| 133 | recover from. STATUS is the errno value from read_memory_func and |
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| 134 | MEMADDR is the address that we were trying to read. INFO is a |
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| 135 | pointer to this struct. */ |
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| 136 | void (*memory_error_func) |
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| 137 | (int status, bfd_vma memaddr, struct disassemble_info *dinfo); |
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| 138 | |
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| 139 | /* Function called to print ADDR. */ |
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| 140 | void (*print_address_func) |
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| 141 | (bfd_vma addr, struct disassemble_info *dinfo); |
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| 142 | |
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| 143 | /* Function called to determine if there is a symbol at the given ADDR. |
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| 144 | If there is, the function returns 1, otherwise it returns 0. |
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| 145 | This is used by ports which support an overlay manager where |
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| 146 | the overlay number is held in the top part of an address. In |
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| 147 | some circumstances we want to include the overlay number in the |
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| 148 | address, (normally because there is a symbol associated with |
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| 149 | that address), but sometimes we want to mask out the overlay bits. */ |
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| 150 | int (* symbol_at_address_func) |
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| 151 | (bfd_vma addr, struct disassemble_info *dinfo); |
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| 152 | |
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| 153 | /* Function called to check if a SYMBOL is can be displayed to the user. |
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| 154 | This is used by some ports that want to hide special symbols when |
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| 155 | displaying debugging outout. */ |
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| 156 | bfd_boolean (* symbol_is_valid) |
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| 157 | (asymbol *, struct disassemble_info *dinfo); |
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| 158 | |
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| 159 | /* These are for buffer_read_memory. */ |
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| 160 | bfd_byte *buffer; |
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| 161 | bfd_vma buffer_vma; |
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| 162 | unsigned int buffer_length; |
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| 163 | |
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| 164 | /* This variable may be set by the instruction decoder. It suggests |
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| 165 | the number of bytes objdump should display on a single line. If |
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| 166 | the instruction decoder sets this, it should always set it to |
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| 167 | the same value in order to get reasonable looking output. */ |
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| 168 | int bytes_per_line; |
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| 169 | |
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| 170 | /* The next two variables control the way objdump displays the raw data. */ |
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| 171 | /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */ |
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| 172 | /* output will look like this: |
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| 173 | 00: 00000000 00000000 |
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| 174 | with the chunks displayed according to "display_endian". */ |
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| 175 | int bytes_per_chunk; |
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| 176 | enum bfd_endian display_endian; |
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| 177 | |
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| 178 | /* Number of octets per incremented target address |
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| 179 | Normally one, but some DSPs have byte sizes of 16 or 32 bits. */ |
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| 180 | unsigned int octets_per_byte; |
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| 181 | |
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| 182 | /* The number of zeroes we want to see at the end of a section before we |
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| 183 | start skipping them. */ |
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| 184 | unsigned int skip_zeroes; |
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| 185 | |
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| 186 | /* The number of zeroes to skip at the end of a section. If the number |
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| 187 | of zeroes at the end is between SKIP_ZEROES_AT_END and SKIP_ZEROES, |
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| 188 | they will be disassembled. If there are fewer than |
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| 189 | SKIP_ZEROES_AT_END, they will be skipped. This is a heuristic |
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| 190 | attempt to avoid disassembling zeroes inserted by section |
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| 191 | alignment. */ |
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| 192 | unsigned int skip_zeroes_at_end; |
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| 193 | |
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| 194 | /* Whether the disassembler always needs the relocations. */ |
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| 195 | bfd_boolean disassembler_needs_relocs; |
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| 196 | |
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| 197 | /* Results from instruction decoders. Not all decoders yet support |
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| 198 | this information. This info is set each time an instruction is |
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| 199 | decoded, and is only valid for the last such instruction. |
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| 200 | |
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| 201 | To determine whether this decoder supports this information, set |
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| 202 | insn_info_valid to 0, decode an instruction, then check it. */ |
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| 203 | |
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| 204 | char insn_info_valid; /* Branch info has been set. */ |
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| 205 | char branch_delay_insns; /* How many sequential insn's will run before |
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| 206 | a branch takes effect. (0 = normal) */ |
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| 207 | char data_size; /* Size of data reference in insn, in bytes */ |
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| 208 | enum dis_insn_type insn_type; /* Type of instruction */ |
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| 209 | bfd_vma target; /* Target address of branch or dref, if known; |
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| 210 | zero if unknown. */ |
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| 211 | bfd_vma target2; /* Second target address for dref2 */ |
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| 212 | |
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| 213 | /* Command line options specific to the target disassembler. */ |
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| 214 | char * disassembler_options; |
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| 215 | |
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| 216 | } disassemble_info; |
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| 217 | |
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| 218 | |
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| 219 | /* Standard disassemblers. Disassemble one instruction at the given |
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| 220 | target address. Return number of octets processed. */ |
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| 221 | typedef int (*disassembler_ftype) (bfd_vma, disassemble_info *); |
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| 222 | |
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| 223 | extern int print_insn_aarch64 (bfd_vma, disassemble_info *); |
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| 224 | extern int print_insn_alpha (bfd_vma, disassemble_info *); |
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| 225 | extern int print_insn_avr (bfd_vma, disassemble_info *); |
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| 226 | extern int print_insn_bfin (bfd_vma, disassemble_info *); |
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| 227 | extern int print_insn_big_arm (bfd_vma, disassemble_info *); |
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| 228 | extern int print_insn_big_mips (bfd_vma, disassemble_info *); |
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| 229 | extern int print_insn_big_nios2 (bfd_vma, disassemble_info *); |
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| 230 | extern int print_insn_big_or32 (bfd_vma, disassemble_info *); |
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| 231 | extern int print_insn_big_powerpc (bfd_vma, disassemble_info *); |
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| 232 | extern int print_insn_big_score (bfd_vma, disassemble_info *); |
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| 233 | extern int print_insn_cr16 (bfd_vma, disassemble_info *); |
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| 234 | extern int print_insn_crx (bfd_vma, disassemble_info *); |
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| 235 | extern int print_insn_d10v (bfd_vma, disassemble_info *); |
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| 236 | extern int print_insn_d30v (bfd_vma, disassemble_info *); |
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| 237 | extern int print_insn_dlx (bfd_vma, disassemble_info *); |
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| 238 | extern int print_insn_epiphany (bfd_vma, disassemble_info *); |
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| 239 | extern int print_insn_fr30 (bfd_vma, disassemble_info *); |
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| 240 | extern int print_insn_frv (bfd_vma, disassemble_info *); |
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| 241 | extern int print_insn_h8300 (bfd_vma, disassemble_info *); |
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| 242 | extern int print_insn_h8300h (bfd_vma, disassemble_info *); |
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| 243 | extern int print_insn_h8300s (bfd_vma, disassemble_info *); |
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| 244 | extern int print_insn_h8500 (bfd_vma, disassemble_info *); |
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| 245 | extern int print_insn_hppa (bfd_vma, disassemble_info *); |
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| 246 | extern int print_insn_i370 (bfd_vma, disassemble_info *); |
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| 247 | extern int print_insn_i386 (bfd_vma, disassemble_info *); |
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| 248 | extern int print_insn_i386_att (bfd_vma, disassemble_info *); |
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| 249 | extern int print_insn_i386_intel (bfd_vma, disassemble_info *); |
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| 250 | extern int print_insn_i860 (bfd_vma, disassemble_info *); |
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| 251 | extern int print_insn_i960 (bfd_vma, disassemble_info *); |
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| 252 | extern int print_insn_ia64 (bfd_vma, disassemble_info *); |
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| 253 | extern int print_insn_ip2k (bfd_vma, disassemble_info *); |
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| 254 | extern int print_insn_iq2000 (bfd_vma, disassemble_info *); |
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| 255 | extern int print_insn_little_arm (bfd_vma, disassemble_info *); |
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| 256 | extern int print_insn_little_mips (bfd_vma, disassemble_info *); |
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| 257 | extern int print_insn_little_nios2 (bfd_vma, disassemble_info *); |
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| 258 | extern int print_insn_little_or32 (bfd_vma, disassemble_info *); |
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| 259 | extern int print_insn_little_powerpc (bfd_vma, disassemble_info *); |
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| 260 | extern int print_insn_little_score (bfd_vma, disassemble_info *); |
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| 261 | extern int print_insn_lm32 (bfd_vma, disassemble_info *); |
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| 262 | extern int print_insn_m32c (bfd_vma, disassemble_info *); |
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| 263 | extern int print_insn_m32r (bfd_vma, disassemble_info *); |
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| 264 | extern int print_insn_m68hc11 (bfd_vma, disassemble_info *); |
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| 265 | extern int print_insn_m68hc12 (bfd_vma, disassemble_info *); |
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| 266 | extern int print_insn_m9s12x (bfd_vma, disassemble_info *); |
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| 267 | extern int print_insn_m9s12xg (bfd_vma, disassemble_info *); |
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| 268 | extern int print_insn_m68k (bfd_vma, disassemble_info *); |
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| 269 | extern int print_insn_m88k (bfd_vma, disassemble_info *); |
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| 270 | extern int print_insn_mcore (bfd_vma, disassemble_info *); |
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| 271 | extern int print_insn_mep (bfd_vma, disassemble_info *); |
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| 272 | extern int print_insn_metag (bfd_vma, disassemble_info *); |
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| 273 | extern int print_insn_microblaze (bfd_vma, disassemble_info *); |
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| 274 | extern int print_insn_mmix (bfd_vma, disassemble_info *); |
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| 275 | extern int print_insn_mn10200 (bfd_vma, disassemble_info *); |
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| 276 | extern int print_insn_mn10300 (bfd_vma, disassemble_info *); |
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| 277 | extern int print_insn_moxie (bfd_vma, disassemble_info *); |
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| 278 | extern int print_insn_msp430 (bfd_vma, disassemble_info *); |
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| 279 | extern int print_insn_mt (bfd_vma, disassemble_info *); |
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| 280 | extern int print_insn_ns32k (bfd_vma, disassemble_info *); |
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| 281 | extern int print_insn_openrisc (bfd_vma, disassemble_info *); |
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| 282 | extern int print_insn_pdp11 (bfd_vma, disassemble_info *); |
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| 283 | extern int print_insn_pj (bfd_vma, disassemble_info *); |
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| 284 | extern int print_insn_rs6000 (bfd_vma, disassemble_info *); |
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| 285 | extern int print_insn_s390 (bfd_vma, disassemble_info *); |
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| 286 | extern int print_insn_sh (bfd_vma, disassemble_info *); |
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| 287 | extern int print_insn_sh64 (bfd_vma, disassemble_info *); |
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| 288 | extern int print_insn_sh64x_media (bfd_vma, disassemble_info *); |
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| 289 | extern int print_insn_sparc (bfd_vma, disassemble_info *); |
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| 290 | extern int print_insn_spu (bfd_vma, disassemble_info *); |
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| 291 | extern int print_insn_tic30 (bfd_vma, disassemble_info *); |
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| 292 | extern int print_insn_tic4x (bfd_vma, disassemble_info *); |
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| 293 | extern int print_insn_tic54x (bfd_vma, disassemble_info *); |
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| 294 | extern int print_insn_tic6x (bfd_vma, disassemble_info *); |
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| 295 | extern int print_insn_tic80 (bfd_vma, disassemble_info *); |
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| 296 | extern int print_insn_tilegx (bfd_vma, disassemble_info *); |
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| 297 | extern int print_insn_tilepro (bfd_vma, disassemble_info *); |
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| 298 | extern int print_insn_v850 (bfd_vma, disassemble_info *); |
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| 299 | extern int print_insn_vax (bfd_vma, disassemble_info *); |
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| 300 | extern int print_insn_w65 (bfd_vma, disassemble_info *); |
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| 301 | extern int print_insn_xc16x (bfd_vma, disassemble_info *); |
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| 302 | extern int print_insn_xgate (bfd_vma, disassemble_info *); |
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| 303 | extern int print_insn_xstormy16 (bfd_vma, disassemble_info *); |
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| 304 | extern int print_insn_xtensa (bfd_vma, disassemble_info *); |
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| 305 | extern int print_insn_z80 (bfd_vma, disassemble_info *); |
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| 306 | extern int print_insn_z8001 (bfd_vma, disassemble_info *); |
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| 307 | extern int print_insn_z8002 (bfd_vma, disassemble_info *); |
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| 308 | extern int print_insn_rx (bfd_vma, disassemble_info *); |
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| 309 | extern int print_insn_rl78 (bfd_vma, disassemble_info *); |
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| 310 | |
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| 311 | extern disassembler_ftype arc_get_disassembler (void *); |
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| 312 | extern disassembler_ftype cris_get_disassembler (bfd *); |
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| 313 | |
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| 314 | extern void print_aarch64_disassembler_options (FILE *); |
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| 315 | extern void print_i386_disassembler_options (FILE *); |
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| 316 | extern void print_mips_disassembler_options (FILE *); |
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| 317 | extern void print_ppc_disassembler_options (FILE *); |
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| 318 | extern void print_arm_disassembler_options (FILE *); |
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| 319 | extern void parse_arm_disassembler_option (char *); |
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| 320 | extern void print_s390_disassembler_options (FILE *); |
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| 321 | extern int get_arm_regname_num_options (void); |
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| 322 | extern int set_arm_regname_option (int); |
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| 323 | extern int get_arm_regnames (int, const char **, const char **, const char *const **); |
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| 324 | extern bfd_boolean aarch64_symbol_is_valid (asymbol *, struct disassemble_info *); |
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| 325 | extern bfd_boolean arm_symbol_is_valid (asymbol *, struct disassemble_info *); |
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| 326 | extern void disassemble_init_powerpc (struct disassemble_info *); |
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| 327 | |
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| 328 | /* Fetch the disassembler for a given BFD, if that support is available. */ |
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| 329 | extern disassembler_ftype disassembler (bfd *); |
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| 330 | |
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| 331 | /* Amend the disassemble_info structure as necessary for the target architecture. |
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| 332 | Should only be called after initialising the info->arch field. */ |
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| 333 | extern void disassemble_init_for_target (struct disassemble_info * dinfo); |
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| 334 | |
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| 335 | /* Document any target specific options available from the disassembler. */ |
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| 336 | extern void disassembler_usage (FILE *); |
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| 337 | |
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| 338 | |
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| 339 | /* This block of definitions is for particular callers who read instructions |
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| 340 | into a buffer before calling the instruction decoder. */ |
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| 341 | |
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| 342 | /* Here is a function which callers may wish to use for read_memory_func. |
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| 343 | It gets bytes from a buffer. */ |
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| 344 | extern int buffer_read_memory |
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| 345 | (bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *); |
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| 346 | |
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| 347 | /* This function goes with buffer_read_memory. |
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| 348 | It prints a message using info->fprintf_func and info->stream. */ |
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| 349 | extern void perror_memory (int, bfd_vma, struct disassemble_info *); |
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| 350 | |
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| 351 | |
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| 352 | /* Just print the address in hex. This is included for completeness even |
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| 353 | though both GDB and objdump provide their own (to print symbolic |
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| 354 | addresses). */ |
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| 355 | extern void generic_print_address |
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| 356 | (bfd_vma, struct disassemble_info *); |
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| 357 | |
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| 358 | /* Always true. */ |
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| 359 | extern int generic_symbol_at_address |
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| 360 | (bfd_vma, struct disassemble_info *); |
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| 361 | |
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| 362 | /* Also always true. */ |
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| 363 | extern bfd_boolean generic_symbol_is_valid |
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| 364 | (asymbol *, struct disassemble_info *); |
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| 365 | |
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| 366 | /* Method to initialize a disassemble_info struct. This should be |
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| 367 | called by all applications creating such a struct. */ |
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| 368 | extern void init_disassemble_info (struct disassemble_info *dinfo, void *stream, |
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| 369 | fprintf_ftype fprintf_func); |
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| 370 | |
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| 371 | /* For compatibility with existing code. */ |
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| 372 | #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \ |
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| 373 | init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC)) |
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| 374 | #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \ |
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| 375 | init_disassemble_info (&(INFO), (STREAM), (fprintf_ftype) (FPRINTF_FUNC)) |
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| 376 | |
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| 377 | |
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| 378 | #ifdef __cplusplus |
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| 379 | } |
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| 380 | #endif |
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| 381 | |
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| 382 | #endif /* ! defined (DIS_ASM_H) */ |
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