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. */
19 typedef int (*fprintf_ftype) PARAMS((PTR, const char*, ...));
22 dis_noninsn, /* Not a valid instruction */
23 dis_nonbranch, /* Not a branch instruction */
24 dis_branch, /* Unconditional branch */
25 dis_condbranch, /* Conditional branch */
26 dis_jsr, /* Jump to subroutine */
27 dis_condjsr, /* Conditional jump to subroutine */
28 dis_dref, /* Data reference instruction */
29 dis_dref2 /* Two data references in instruction */
32 /* This struct is passed into the instruction decoding routine,
33 and is passed back out into each callback. The various fields are used
34 for conveying information from your main routine into your callbacks,
35 for passing information into the instruction decoders (such as the
36 addresses of the callback functions), or for passing information
37 back from the instruction decoders to their callers.
39 It must be initialized before it is first passed; this can be done
40 by hand, or using one of the initialization macros below. */
42 typedef struct disassemble_info {
43 fprintf_ftype fprintf_func;
47 /* Target description. We could replace this with a pointer to the bfd,
48 but that would require one. There currently isn't any such requirement
49 so to avoid introducing one we record these explicitly. */
50 /* The bfd_flavour. This can be bfd_target_unknown_flavour. */
51 enum bfd_flavour flavour;
52 /* The bfd_arch value. */
53 enum bfd_architecture arch;
54 /* The bfd_mach value. */
56 /* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
57 enum bfd_endian endian;
59 /* An array of pointers to symbols either at the location being disassembled
60 or at the start of the function being disassembled. The array is sorted
61 so that the first symbol is intended to be the one used. The others are
62 present for any misc. purposes. This is not set reliably, but if it is
63 not NULL, it is correct. */
65 /* Number of symbols in array. */
68 /* For use by the disassembler.
69 The top 16 bits are reserved for public use (and are documented here).
70 The bottom 16 bits are for the internal use of the disassembler. */
72 #define INSN_HAS_RELOC 0x80000000
75 /* Function used to get bytes to disassemble. MEMADDR is the
76 address of the stuff to be disassembled, MYADDR is the address to
77 put the bytes in, and LENGTH is the number of bytes to read.
78 INFO is a pointer to this struct.
79 Returns an errno value or 0 for success. */
80 int (*read_memory_func)
81 PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int length,
82 struct disassemble_info *info));
84 /* Function which should be called if we get an error that we can't
85 recover from. STATUS is the errno value from read_memory_func and
86 MEMADDR is the address that we were trying to read. INFO is a
87 pointer to this struct. */
88 void (*memory_error_func)
89 PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
91 /* Function called to print ADDR. */
92 void (*print_address_func)
93 PARAMS ((bfd_vma addr, struct disassemble_info *info));
95 /* Function called to determine if there is a symbol at the given ADDR.
96 If there is, the function returns 1, otherwise it returns 0.
97 This is used by ports which support an overlay manager where
98 the overlay number is held in the top part of an address. In
99 some circumstances we want to include the overlay number in the
100 address, (normally because there is a symbol associated with
101 that address), but sometimes we want to mask out the overlay bits. */
102 int (* symbol_at_address_func)
103 PARAMS ((bfd_vma addr, struct disassemble_info * info));
105 /* These are for buffer_read_memory. */
110 /* This variable may be set by the instruction decoder. It suggests
111 the number of bytes objdump should display on a single line. If
112 the instruction decoder sets this, it should always set it to
113 the same value in order to get reasonable looking output. */
116 /* the next two variables control the way objdump displays the raw data */
117 /* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
118 /* output will look like this:
119 00: 00000000 00000000
120 with the chunks displayed according to "display_endian". */
122 enum bfd_endian display_endian;
124 /* Results from instruction decoders. Not all decoders yet support
125 this information. This info is set each time an instruction is
126 decoded, and is only valid for the last such instruction.
128 To determine whether this decoder supports this information, set
129 insn_info_valid to 0, decode an instruction, then check it. */
131 char insn_info_valid; /* Branch info has been set. */
132 char branch_delay_insns; /* How many sequential insn's will run before
133 a branch takes effect. (0 = normal) */
134 char data_size; /* Size of data reference in insn, in bytes */
135 enum dis_insn_type insn_type; /* Type of instruction */
136 bfd_vma target; /* Target address of branch or dref, if known;
138 bfd_vma target2; /* Second target address for dref2 */
140 /* Command line options specific to the target disassembler. */
141 char * disassembler_options;
146 /* Standard disassemblers. Disassemble one instruction at the given
147 target address. Return number of bytes processed. */
148 typedef int (*disassembler_ftype)
149 PARAMS((bfd_vma, disassemble_info *));
151 extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
152 extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
153 extern int print_insn_i386_att PARAMS ((bfd_vma, disassemble_info*));
154 extern int print_insn_i386_intel PARAMS ((bfd_vma, disassemble_info*));
155 extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
156 extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
157 extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
158 extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
159 extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
160 extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
161 extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
162 extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
163 extern disassembler_ftype arc_get_disassembler PARAMS ((int, int));
164 extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
165 extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
166 extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
167 extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
168 extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
169 extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
170 extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
171 extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
172 extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
173 extern int print_insn_fr30 PARAMS ((bfd_vma, disassemble_info*));
174 extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
175 extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
176 extern int print_insn_mcore PARAMS ((bfd_vma, disassemble_info*));
177 extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
178 extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
179 extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
180 extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
181 extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
182 extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
183 extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
184 extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
185 extern int print_insn_d30v PARAMS ((bfd_vma, disassemble_info*));
186 extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
187 extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
188 extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
189 extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
190 extern int print_insn_pj PARAMS ((bfd_vma, disassemble_info*));
192 extern int arm_toggle_regnames PARAMS ((void));
194 /* Fetch the disassembler for a given BFD, if that support is available. */
195 extern disassembler_ftype disassembler PARAMS ((bfd *));
197 /* Document any target specific options available from the disassembler. */
198 extern void disassembler_usage PARAMS ((FILE *));
201 /* This block of definitions is for particular callers who read instructions
202 into a buffer before calling the instruction decoder. */
204 /* Here is a function which callers may wish to use for read_memory_func.
205 It gets bytes from a buffer. */
206 extern int buffer_read_memory
207 PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
209 /* This function goes with buffer_read_memory.
210 It prints a message using info->fprintf_func and info->stream. */
211 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
214 /* Just print the address in hex. This is included for completeness even
215 though both GDB and objdump provide their own (to print symbolic
217 extern void generic_print_address
218 PARAMS ((bfd_vma, struct disassemble_info *));
221 extern int generic_symbol_at_address
222 PARAMS ((bfd_vma, struct disassemble_info *));
224 /* Macro to initialize a disassemble_info struct. This should be called
225 by all applications creating such a struct. */
226 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
227 (INFO).flavour = bfd_target_unknown_flavour, \
228 (INFO).arch = bfd_arch_unknown, \
230 (INFO).endian = BFD_ENDIAN_UNKNOWN, \
231 INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
233 /* Call this macro to initialize only the internal variables for the
234 disassembler. Architecture dependent things such as byte order, or machine
235 variant are not touched by this macro. This makes things much easier for
236 GDB which must initialize these things seperatly. */
238 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
239 (INFO).fprintf_func = (fprintf_ftype)(FPRINTF_FUNC), \
240 (INFO).stream = (PTR)(STREAM), \
241 (INFO).symbols = NULL, \
242 (INFO).num_symbols = 0, \
243 (INFO).buffer = NULL, \
244 (INFO).buffer_vma = 0, \
245 (INFO).buffer_length = 0, \
246 (INFO).read_memory_func = buffer_read_memory, \
247 (INFO).memory_error_func = perror_memory, \
248 (INFO).print_address_func = generic_print_address, \
249 (INFO).symbol_at_address_func = generic_symbol_at_address, \
251 (INFO).bytes_per_line = 0, \
252 (INFO).bytes_per_chunk = 0, \
253 (INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
254 (INFO).insn_info_valid = 0
260 #endif /* ! defined (DIS_ASM_H) */