radare2/libr/asm/p/asm_sh.c

84 lines
2.2 KiB
C

/* radare - LGPL - Copyright 2010-2011 eloi<limited-entropy.com> */
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <r_types.h>
#include <r_lib.h>
#include <r_util.h>
#include <r_asm.h>
#include "disas-asm.h"
static unsigned long Offset = 0;
static RStrBuf *buf_global = NULL;
static unsigned char bytes[4];
static int sh_buffer_read_memory (bfd_vma memaddr, bfd_byte *myaddr, unsigned int length, struct disassemble_info *info) {
//this is obviously wrong. but how can we read arbitrary data @ memaddr from here?
memcpy (myaddr, bytes, length);
return 0;
}
int print_insn_shl (bfd_vma memaddr, struct disassemble_info *info);
int print_insn_shb (bfd_vma memaddr, struct disassemble_info *info);
static int symbol_at_address(bfd_vma addr, struct disassemble_info * info) {
return 0;
}
static void memory_error_func(int status, bfd_vma memaddr, struct disassemble_info *info) {
//--
}
DECLARE_GENERIC_PRINT_ADDRESS_FUNC()
DECLARE_GENERIC_FPRINTF_FUNC()
static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
static struct disassemble_info disasm_obj;
if (len < 2) {
return -1;
}
buf_global = &op->buf_asm;
Offset = a->pc;
memcpy (bytes, buf, 2);
/* prepare disassembler */
memset (&disasm_obj,'\0', sizeof (struct disassemble_info));
disasm_obj.buffer = bytes;
disasm_obj.read_memory_func = &sh_buffer_read_memory;
disasm_obj.symbol_at_address_func = &symbol_at_address;
disasm_obj.memory_error_func = &memory_error_func;
disasm_obj.print_address_func = &generic_print_address_func;
disasm_obj.endian = !a->big_endian;
disasm_obj.fprintf_func = &generic_fprintf_func;
disasm_obj.stream = stdout;
if (disasm_obj.endian == BFD_ENDIAN_BIG) {
op->size = print_insn_shb ((bfd_vma)Offset, &disasm_obj);
} else {
op->size = print_insn_shl ((bfd_vma)Offset, &disasm_obj);
}
if (op->size == -1) {
r_asm_op_set_asm (op, "(data)");
}
return op->size;
}
RAsmPlugin r_asm_plugin_sh = {
.name = "sh",
.arch = "sh",
.license = "GPL3",
.bits = 32,
.endian = R_SYS_ENDIAN_LITTLE | R_SYS_ENDIAN_BIG,
.desc = "SuperH-4 CPU",
.disassemble = &disassemble
};
#ifndef CORELIB
R_API RLibStruct radare_plugin = {
.type = R_LIB_TYPE_ASM,
.data = &r_asm_plugin_sh,
.version = R2_VERSION
};
#endif