261 lines
11 KiB
C
261 lines
11 KiB
C
/* Interface between the opcode library and its callers.
|
||
Written by Cygnus Support, 1993.
|
||
|
||
The opcode library (libopcodes.a) provides instruction decoders for
|
||
a large variety of instruction sets, callable with an identical
|
||
interface, for making instruction-processing programs more independent
|
||
of the instruction set being processed. */
|
||
|
||
#ifndef DIS_ASM_H
|
||
#define DIS_ASM_H
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
|
||
#include <stdio.h>
|
||
#include "bfd.h"
|
||
|
||
typedef int (*fprintf_ftype) PARAMS((PTR, const char*, ...));
|
||
|
||
enum dis_insn_type {
|
||
dis_noninsn, /* Not a valid instruction */
|
||
dis_nonbranch, /* Not a branch instruction */
|
||
dis_branch, /* Unconditional branch */
|
||
dis_condbranch, /* Conditional branch */
|
||
dis_jsr, /* Jump to subroutine */
|
||
dis_condjsr, /* Conditional jump to subroutine */
|
||
dis_dref, /* Data reference instruction */
|
||
dis_dref2 /* Two data references in instruction */
|
||
};
|
||
|
||
/* This struct is passed into the instruction decoding routine,
|
||
and is passed back out into each callback. The various fields are used
|
||
for conveying information from your main routine into your callbacks,
|
||
for passing information into the instruction decoders (such as the
|
||
addresses of the callback functions), or for passing information
|
||
back from the instruction decoders to their callers.
|
||
|
||
It must be initialized before it is first passed; this can be done
|
||
by hand, or using one of the initialization macros below. */
|
||
|
||
typedef struct disassemble_info {
|
||
fprintf_ftype fprintf_func;
|
||
PTR stream;
|
||
PTR application_data;
|
||
|
||
/* Target description. We could replace this with a pointer to the bfd,
|
||
but that would require one. There currently isn't any such requirement
|
||
so to avoid introducing one we record these explicitly. */
|
||
/* The bfd_flavour. This can be bfd_target_unknown_flavour. */
|
||
enum bfd_flavour flavour;
|
||
/* The bfd_arch value. */
|
||
enum bfd_architecture arch;
|
||
/* The bfd_mach value. */
|
||
unsigned long mach;
|
||
/* Endianness (for bi-endian cpus). Mono-endian cpus can ignore this. */
|
||
enum bfd_endian endian;
|
||
|
||
/* An array of pointers to symbols either at the location being disassembled
|
||
or at the start of the function being disassembled. The array is sorted
|
||
so that the first symbol is intended to be the one used. The others are
|
||
present for any misc. purposes. This is not set reliably, but if it is
|
||
not NULL, it is correct. */
|
||
asymbol **symbols;
|
||
/* Number of symbols in array. */
|
||
int num_symbols;
|
||
|
||
/* For use by the disassembler.
|
||
The top 16 bits are reserved for public use (and are documented here).
|
||
The bottom 16 bits are for the internal use of the disassembler. */
|
||
unsigned long flags;
|
||
#define INSN_HAS_RELOC 0x80000000
|
||
PTR private_data;
|
||
|
||
/* Function used to get bytes to disassemble. MEMADDR is the
|
||
address of the stuff to be disassembled, MYADDR is the address to
|
||
put the bytes in, and LENGTH is the number of bytes to read.
|
||
INFO is a pointer to this struct.
|
||
Returns an errno value or 0 for success. */
|
||
int (*read_memory_func)
|
||
PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int length,
|
||
struct disassemble_info *info));
|
||
|
||
/* Function which should be called if we get an error that we can't
|
||
recover from. STATUS is the errno value from read_memory_func and
|
||
MEMADDR is the address that we were trying to read. INFO is a
|
||
pointer to this struct. */
|
||
void (*memory_error_func)
|
||
PARAMS ((int status, bfd_vma memaddr, struct disassemble_info *info));
|
||
|
||
/* Function called to print ADDR. */
|
||
void (*print_address_func)
|
||
PARAMS ((bfd_vma addr, struct disassemble_info *info));
|
||
|
||
/* Function called to determine if there is a symbol at the given ADDR.
|
||
If there is, the function returns 1, otherwise it returns 0.
|
||
This is used by ports which support an overlay manager where
|
||
the overlay number is held in the top part of an address. In
|
||
some circumstances we want to include the overlay number in the
|
||
address, (normally because there is a symbol associated with
|
||
that address), but sometimes we want to mask out the overlay bits. */
|
||
int (* symbol_at_address_func)
|
||
PARAMS ((bfd_vma addr, struct disassemble_info * info));
|
||
|
||
/* These are for buffer_read_memory. */
|
||
bfd_byte *buffer;
|
||
bfd_vma buffer_vma;
|
||
int buffer_length;
|
||
|
||
/* This variable may be set by the instruction decoder. It suggests
|
||
the number of bytes objdump should display on a single line. If
|
||
the instruction decoder sets this, it should always set it to
|
||
the same value in order to get reasonable looking output. */
|
||
int bytes_per_line;
|
||
|
||
/* the next two variables control the way objdump displays the raw data */
|
||
/* For example, if bytes_per_line is 8 and bytes_per_chunk is 4, the */
|
||
/* output will look like this:
|
||
00: 00000000 00000000
|
||
with the chunks displayed according to "display_endian". */
|
||
int bytes_per_chunk;
|
||
enum bfd_endian display_endian;
|
||
|
||
/* Results from instruction decoders. Not all decoders yet support
|
||
this information. This info is set each time an instruction is
|
||
decoded, and is only valid for the last such instruction.
|
||
|
||
To determine whether this decoder supports this information, set
|
||
insn_info_valid to 0, decode an instruction, then check it. */
|
||
|
||
char insn_info_valid; /* Branch info has been set. */
|
||
char branch_delay_insns; /* How many sequential insn's will run before
|
||
a branch takes effect. (0 = normal) */
|
||
char data_size; /* Size of data reference in insn, in bytes */
|
||
enum dis_insn_type insn_type; /* Type of instruction */
|
||
bfd_vma target; /* Target address of branch or dref, if known;
|
||
zero if unknown. */
|
||
bfd_vma target2; /* Second target address for dref2 */
|
||
|
||
/* Command line options specific to the target disassembler. */
|
||
char * disassembler_options;
|
||
|
||
} disassemble_info;
|
||
|
||
|
||
/* Standard disassemblers. Disassemble one instruction at the given
|
||
target address. Return number of bytes processed. */
|
||
typedef int (*disassembler_ftype)
|
||
PARAMS((bfd_vma, disassemble_info *));
|
||
|
||
extern int print_insn_big_mips PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_little_mips PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_i386_att PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_i386_intel PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_m68k PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_z8001 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_z8002 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_h8300 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_h8300h PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_h8300s PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_h8500 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_alpha PARAMS ((bfd_vma, disassemble_info*));
|
||
extern disassembler_ftype arc_get_disassembler PARAMS ((int, int));
|
||
extern int print_insn_big_arm PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_little_arm PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_sparc PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_big_a29k PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_little_a29k PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_i960 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_sh PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_shl PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_hppa PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_fr30 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_m32r PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_m88k PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_mcore PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_mn10200 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_mn10300 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_ns32k PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_big_powerpc PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_little_powerpc PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_rs6000 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_w65 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_d10v PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_d30v PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_v850 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_tic30 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_vax PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_tic80 PARAMS ((bfd_vma, disassemble_info*));
|
||
extern int print_insn_pj PARAMS ((bfd_vma, disassemble_info*));
|
||
|
||
extern int arm_toggle_regnames PARAMS ((void));
|
||
|
||
/* Fetch the disassembler for a given BFD, if that support is available. */
|
||
extern disassembler_ftype disassembler PARAMS ((bfd *));
|
||
|
||
/* Document any target specific options available from the disassembler. */
|
||
extern void disassembler_usage PARAMS ((FILE *));
|
||
|
||
|
||
/* This block of definitions is for particular callers who read instructions
|
||
into a buffer before calling the instruction decoder. */
|
||
|
||
/* Here is a function which callers may wish to use for read_memory_func.
|
||
It gets bytes from a buffer. */
|
||
extern int buffer_read_memory
|
||
PARAMS ((bfd_vma, bfd_byte *, int, struct disassemble_info *));
|
||
|
||
/* This function goes with buffer_read_memory.
|
||
It prints a message using info->fprintf_func and info->stream. */
|
||
extern void perror_memory PARAMS ((int, bfd_vma, struct disassemble_info *));
|
||
|
||
|
||
/* Just print the address in hex. This is included for completeness even
|
||
though both GDB and objdump provide their own (to print symbolic
|
||
addresses). */
|
||
extern void generic_print_address
|
||
PARAMS ((bfd_vma, struct disassemble_info *));
|
||
|
||
/* Always true. */
|
||
extern int generic_symbol_at_address
|
||
PARAMS ((bfd_vma, struct disassemble_info *));
|
||
|
||
/* Macro to initialize a disassemble_info struct. This should be called
|
||
by all applications creating such a struct. */
|
||
#define INIT_DISASSEMBLE_INFO(INFO, STREAM, FPRINTF_FUNC) \
|
||
(INFO).flavour = bfd_target_unknown_flavour, \
|
||
(INFO).arch = bfd_arch_unknown, \
|
||
(INFO).mach = 0, \
|
||
(INFO).endian = BFD_ENDIAN_UNKNOWN, \
|
||
INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC)
|
||
|
||
/* Call this macro to initialize only the internal variables for the
|
||
disassembler. Architecture dependent things such as byte order, or machine
|
||
variant are not touched by this macro. This makes things much easier for
|
||
GDB which must initialize these things seperatly. */
|
||
|
||
#define INIT_DISASSEMBLE_INFO_NO_ARCH(INFO, STREAM, FPRINTF_FUNC) \
|
||
(INFO).fprintf_func = (fprintf_ftype)(FPRINTF_FUNC), \
|
||
(INFO).stream = (PTR)(STREAM), \
|
||
(INFO).symbols = NULL, \
|
||
(INFO).num_symbols = 0, \
|
||
(INFO).buffer = NULL, \
|
||
(INFO).buffer_vma = 0, \
|
||
(INFO).buffer_length = 0, \
|
||
(INFO).read_memory_func = buffer_read_memory, \
|
||
(INFO).memory_error_func = perror_memory, \
|
||
(INFO).print_address_func = generic_print_address, \
|
||
(INFO).symbol_at_address_func = generic_symbol_at_address, \
|
||
(INFO).flags = 0, \
|
||
(INFO).bytes_per_line = 0, \
|
||
(INFO).bytes_per_chunk = 0, \
|
||
(INFO).display_endian = BFD_ENDIAN_UNKNOWN, \
|
||
(INFO).insn_info_valid = 0
|
||
|
||
#ifdef __cplusplus
|
||
};
|
||
#endif
|
||
|
||
#endif /* ! defined (DIS_ASM_H) */
|