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, unsigned 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. */
108 unsigned int buffer_length;
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 /* Number of octets per incremented target address
125 Normally one, but some DSPs have byte sizes of 16 or 32 bits
127 unsigned int octets_per_byte;
129 /* Results from instruction decoders. Not all decoders yet support
130 this information. This info is set each time an instruction is
131 decoded, and is only valid for the last such instruction.
133 To determine whether this decoder supports this information, set
134 insn_info_valid to 0, decode an instruction, then check it. */
136 char insn_info_valid; /* Branch info has been set. */
137 char branch_delay_insns; /* How many sequential insn's will run before
138 a branch takes effect. (0 = normal) */
139 char data_size; /* Size of data reference in insn, in bytes */
140 enum dis_insn_type insn_type; /* Type of instruction */
141 bfd_vma target; /* Target address of branch or dref, if known;
143 bfd_vma target2; /* Second target address for dref2 */
145 /* Command line options specific to the target disassembler. */
146 char * disassembler_options;
151 /* Standard disassemblers. Disassemble one instruction at the given
152 target address. Return number of bytes processed. */
153 typedef int (*disassembler_ftype)
154 PARAMS((bfd_vma, disassemble_info *));
156 extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
157 extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
158 extern int print_insn_i386_att PARAMS ((bfd_vma, disassemble_info*));
159 extern int print_insn_i386_intel PARAMS ((bfd_vma, disassemble_info*));
160 extern int print_insn_i370 PARAMS ((bfd_vma, disassemble_info*));
161 extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
162 extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
163 extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
164 extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
165 extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
166 extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
167 extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
168 extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
169 extern disassembler_ftype arc_get_disassembler PARAMS ((int, int));
170 extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
171 extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
172 extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
173 extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
174 extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
175 extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
176 extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
177 extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
178 extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
179 extern int print_insn_fr30 PARAMS ((bfd_vma, disassemble_info*));
180 extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
181 extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
182 extern int print_insn_mcore PARAMS ((bfd_vma, disassemble_info*));
183 extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
184 extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
185 extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
186 extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
187 extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
188 extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
189 extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
190 extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
191 extern int print_insn_d30v PARAMS ((bfd_vma, disassemble_info*));
192 extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
193 extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
194 extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
195 extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
196 extern int print_insn_pj PARAMS ((bfd_vma, disassemble_info*));
198 extern void print_arm_disassembler_options PARAMS ((FILE *));
199 extern void parse_arm_disassembler_option PARAMS ((char *));
200 extern int get_arm_regname_num_options PARAMS ((void));
201 extern int set_arm_regname_option PARAMS ((int));
202 extern int get_arm_regnames PARAMS ((int, const char **, const char **, const char ***));
204 /* Fetch the disassembler for a given BFD, if that support is available. */
205 extern disassembler_ftype disassembler PARAMS ((bfd *));
207 /* Document any target specific options available from the disassembler. */
208 extern void disassembler_usage PARAMS ((FILE *));
211 /* This block of definitions is for particular callers who read instructions
212 into a buffer before calling the instruction decoder. */
214 /* Here is a function which callers may wish to use for read_memory_func.
215 It gets bytes from a buffer. */
216 extern int buffer_read_memory
217 PARAMS ((bfd_vma, bfd_byte *, unsigned int, struct disassemble_info *));
219 /* This function goes with buffer_read_memory.
220 It prints a message using info->fprintf_func and info->stream. */
221 extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
224 /* Just print the address in hex. This is included for completeness even
225 though both GDB and objdump provide their own (to print symbolic
227 extern void generic_print_address
228 PARAMS ((bfd_vma, struct disassemble_info *));
231 extern int generic_symbol_at_address
232 PARAMS ((bfd_vma, struct disassemble_info *));
234 /* Macro to initialize a disassemble_info struct. This should be called
235 by all applications creating such a struct. */
236 #define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
237 (INFO).flavour = bfd_target_unknown_flavour, \
238 (INFO).arch = bfd_arch_unknown, \
240 (INFO).endian = BFD_ENDIAN_UNKNOWN, \
241 (INFO).octets_per_byte = 1, \
242 INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
244 /* Call this macro to initialize only the internal variables for the
245 disassembler. Architecture dependent things such as byte order, or machine
246 variant are not touched by this macro. This makes things much easier for
247 GDB which must initialize these things seperatly. */
249 #define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
250 (INFO).fprintf_func = (fprintf_ftype)(FPRINTF_FUNC), \
251 (INFO).stream = (PTR)(STREAM), \
252 (INFO).symbols = NULL, \
253 (INFO).num_symbols = 0, \
254 (INFO).buffer = NULL, \
255 (INFO).buffer_vma = 0, \
256 (INFO).buffer_length = 0, \
257 (INFO).read_memory_func = buffer_read_memory, \
258 (INFO).memory_error_func = perror_memory, \
259 (INFO).print_address_func = generic_print_address, \
260 (INFO).symbol_at_address_func = generic_symbol_at_address, \
262 (INFO).bytes_per_line = 0, \
263 (INFO).bytes_per_chunk = 0, \
264 (INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
265 (INFO).insn_info_valid = 0
271 #endif /* ! defined (DIS_ASM_H) */