1 /* Interface between the opcode library and its callers.
2 Written by Cygnus Support, 1993.
4 The opcode library (libopcodes.a) provides instruction decoders for
5 a large variety of instruction sets, callable with an identical
6 interface, for making instruction-processing programs more independent
7 of the instruction set being processed. */
15 typedef int (*fprintf_ftype) PARAMS((FILE*, const char*, ...));
18 dis_noninsn, /* Not a valid instruction */
19 dis_nonbranch, /* Not a branch instruction */
20 dis_branch, /* Unconditional branch */
21 dis_condbranch, /* Conditional branch */
22 dis_jsr, /* Jump to subroutine */
23 dis_condjsr, /* Conditional jump to subroutine */
24 dis_dref, /* Data reference instruction */
25 dis_dref2 /* Two data references in instruction */
28 /* This struct is passed into the instruction decoding routine,
29 and is passed back out into each callback. The various fields are used
30 for conveying information from your main routine into your callbacks,
31 for passing information into the instruction decoders (such as the
32 addresses of the callback functions), or for passing information
33 back from the instruction decoders to their callers.
35 It must be initialized before it is first passed; this can be done
36 by hand, or using one of the initialization macros below. */
38 typedef struct disassemble_info {
39 fprintf_ftype fprintf_func;
43 /* Target description. We could replace this with a pointer to the bfd,
44 but that would require one. There currently isn't any such requirement
45 so to avoid introducing one we record these explicitly. */
46 /* The bfd_arch value. */
47 enum bfd_architecture arch;
48 /* The bfd_mach value. */
50 /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
51 enum bfd_endian endian;
53 /* For use by the disassembler.
54 The top 16 bits are reserved for public use (and are documented here).
55 The bottom 16 bits are for the internal use of the disassembler. */
59 /* Function used to get bytes to disassemble. MEMADDR is the
60 address of the stuff to be disassembled, MYADDR is the address to
61 put the bytes in, and LENGTH is the number of bytes to read.
62 INFO is a pointer to this struct.
63 Returns an errno value or 0 for success. */
64 int (*read_memory_func)
65 PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int length,
66 struct disassemble_info *info));
68 /* Function which should be called if we get an error that we can't
69 recover from. STATUS is the errno value from read_memory_func and
70 MEMADDR is the address that we were trying to read. INFO is a
71 pointer to this struct. */
72 void (*memory_error_func)
73 PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
75 /* Function called to print ADDR. */
76 void (*print_address_func)
77 PARAMS ((bfd_vma addr, struct disassemble_info *info));
79 /* These are for buffer_read_memory. */
84 /* Results from instruction decoders. Not all decoders yet support
85 this information. This info is set each time an instruction is
86 decoded, and is only valid for the last such instruction.
88 To determine whether this decoder supports this information, set
89 insn_info_valid to 0, decode an instruction, then check it. */
91 char insn_info_valid; /* Branch info has been set. */
92 char branch_delay_insns; /* How many sequential insn's will run before
93 a branch takes effect. (0 = normal) */
94 char data_size; /* Size of data reference in insn, in bytes */
95 enum dis_insn_type insn_type; /* Type of instruction */
96 bfd_vma target; /* Target address of branch or dref, if known;
98 bfd_vma target2; /* Second target address for dref2 */
103 /* Standard disassemblers. Disassemble one instruction at the given
104 target address. Return number of bytes processed. */
105 typedef int (*disassembler_ftype)
106 PARAMS((bfd_vma, disassemble_info *));
108 extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
109 extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
110 extern int print_insn_i386 PARAMS ((bfd_vma, disassemble_info*));
111 extern int print_insn_i8086 PARAMS ((bfd_vma, disassemble_info*));
112 extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
113 extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
114 extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
115 extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
116 extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
117 extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
118 extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
119 extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
120 /* start-sanitize-arc */
121 extern disassembler_ftype arc_get_disassembler PARAMS ((int, int));
122 /* end-sanitize-arc */
123 extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
124 extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
125 extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
126 extern int print_insn_sparc64 PARAMS ((bfd_vma, disassemble_info*));
127 extern int print_insn_sparclite PARAMS ((bfd_vma, disassemble_info*));
128 extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
129 extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
130 extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
131 extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
132 extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
133 extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
134 extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
135 extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
136 extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
137 extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
138 extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
139 extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
141 /* Fetch the disassembler for a given BFD, if that support is available. */
142 extern disassembler_ftype disassembler PARAMS ((bfd *));
145 /* This block of definitions is for particular callers who read instructions
146 into a buffer before calling the instruction decoder. */
148 /* Here is a function which callers may wish to use for read_memory_func.
149 It gets bytes from a buffer. */
150 extern int buffer_read_memory
151 PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
153 /* This function goes with buffer_read_memory.
154 It prints a message using info->fprintf_func and info->stream. */
155 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
158 /* Just print the address in hex. This is included for completeness even
159 though both GDB and objdump provide their own (to print symbolic
161 extern void generic_print_address
162 PARAMS ((bfd_vma, struct disassemble_info *));
164 /* Macro to initialize a disassemble_info struct. This should be called
165 by all applications creating such a struct. */
166 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
167 (INFO).fprintf_func = (FPRINTF_FUNC), \
168 (INFO).stream = (STREAM), \
169 (INFO).buffer = NULL, \
170 (INFO).buffer_vma = 0, \
171 (INFO).buffer_length = 0, \
172 (INFO).read_memory_func = buffer_read_memory, \
173 (INFO).memory_error_func = perror_memory, \
174 (INFO).print_address_func = generic_print_address, \
175 (INFO).arch = bfd_arch_unknown, \
177 (INFO).endian = BFD_ENDIAN_UNKNOWN, \
179 (INFO).insn_info_valid = 0
181 #endif /* ! defined (DIS_ASM_H) */