| /* 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. */ |
| |
| #include <stdio.h> |
| #include "bfd.h" |
| |
| typedef int (*fprintf_ftype) PARAMS((FILE*, 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; |
| FILE *stream; |
| PTR application_data; |
| |
| /* For use by the disassembler. */ |
| int flags; |
| 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)); |
| |
| /* These are for buffer_read_memory. */ |
| bfd_byte *buffer; |
| bfd_vma buffer_vma; |
| int buffer_length; |
| |
| /* 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 */ |
| |
| } 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_i286 PARAMS ((bfd_vma, disassemble_info*)); |
| extern int print_insn_i386 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_h8500 PARAMS ((bfd_vma, disassemble_info*)); |
| extern int print_insn_alpha 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_hppa PARAMS ((bfd_vma, disassemble_info*)); |
| extern int print_insn_m88k 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*)); |
| |
| /* Fetch the disassembler for a given BFD, if that support is available. */ |
| extern disassembler_ftype disassembler PARAMS ((bfd *)); |
| |
| |
| /* 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 is 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 *)); |
| |
| #define INIT_DISASSEMBLE_INFO(INFO, STREAM) \ |
| (INFO).fprintf_func = (fprintf_ftype)fprintf, \ |
| (INFO).stream = (STREAM), \ |
| (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).insn_info_valid = 0 |
| |
| |
| |
| |
| /* This block of definitions is for calling the instruction decoders |
| from GDB. */ |
| |
| /* GDB--Like target_read_memory, but slightly different parameters. */ |
| extern int |
| dis_asm_read_memory PARAMS ((bfd_vma memaddr, bfd_byte *myaddr, int len, |
| disassemble_info *info)); |
| |
| /* GDB--Like memory_error with slightly different parameters. */ |
| extern void |
| dis_asm_memory_error |
| PARAMS ((int status, bfd_vma memaddr, disassemble_info *info)); |
| |
| /* GDB--Like print_address with slightly different parameters. */ |
| extern void |
| dis_asm_print_address PARAMS ((bfd_vma addr, disassemble_info *info)); |
| |
| #define GDB_INIT_DISASSEMBLE_INFO(INFO, STREAM) \ |
| (INFO).fprintf_func = (fprintf_ftype)fprintf_filtered, \ |
| (INFO).stream = (STREAM), \ |
| (INFO).read_memory_func = dis_asm_read_memory, \ |
| (INFO).memory_error_func = dis_asm_memory_error, \ |
| (INFO).print_address_func = dis_asm_print_address, \ |
| (INFO).insn_info_valid = 0 |