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142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/* radare - LGPL - Copyright 2014 - pancake */
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#if 0
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Documentation
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-------------
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http://developer.axis.com/old/documentation/hw/etraxfs/des_ref/des_ref.pdf
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http://developer.axis.com/old/documentation/hw/etraxfs/iop_howto/iop_howto.pdf
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#endif
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <r_types.h>
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#include <r_lib.h>
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#include <r_util.h>
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#include <r_asm.h>
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#include "dis-asm.h"
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static unsigned long Offset = 0;
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static char *buf_global = NULL;
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static unsigned char bytes[8];
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static int cris_buffer_read_memory (bfd_vma memaddr, bfd_byte *myaddr, ut32 length, struct disassemble_info *info) {
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memcpy (myaddr, bytes, length);
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return 0;
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}
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static int symbol_at_address(bfd_vma addr, struct disassemble_info * info) {
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return 0;
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}
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static void memory_error_func(int status, bfd_vma memaddr, struct disassemble_info *info) {
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//--
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}
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static void print_address(bfd_vma address, struct disassemble_info *info) {
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char tmp[32];
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if (!buf_global)
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return;
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sprintf(tmp, "0x%08"PFMT64x"", (ut64)address);
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strcat(buf_global, tmp);
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}
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static int buf_fprintf(void *stream, const char *format, ...) {
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int flen, glen;
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va_list ap;
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char *tmp;
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if (!buf_global)
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return 0;
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va_start (ap, format);
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flen = strlen (format);
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glen = strlen (buf_global);
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tmp = malloc (flen + glen + 2);
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if (!tmp) return 0;
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memcpy (tmp, buf_global, glen);
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memcpy (tmp+glen, format, flen);
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tmp[flen+glen] = 0;
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// XXX: overflow here?
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vsprintf (buf_global, tmp, ap);
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va_end (ap);
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free (tmp);
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return 0;
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}
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//static int print_insn_crisv10_v32_with_register_prefix (bfd_vma vma, disassemble_info *info);
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int print_insn_crisv10_v32_without_register_prefix (bfd_vma vma, disassemble_info *info);
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bfd_boolean cris_parse_disassembler_options (disassemble_info *info, int distype);
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int print_insn_crisv10_v32_with_register_prefix (bfd_vma vma, disassemble_info *info);
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static int disassemble(RAsm *a, RAsmOp *op, const ut8 *buf, int len) {
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struct disassemble_info disasm_obj;
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int mode = 2;
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op->buf_asm[0]='\0';
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if (len<4)
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return -1;
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buf_global = op->buf_asm;
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Offset = a->pc;
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memcpy (bytes, buf, R_MIN (len, 8)); // TODO handle thumb
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/* prepare disassembler */
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memset (&disasm_obj, '\0', sizeof (struct disassemble_info));
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disasm_obj.disassembler_options=(a->bits==64)?"64":"";
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disasm_obj.buffer = bytes;
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disasm_obj.read_memory_func = &cris_buffer_read_memory;
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disasm_obj.symbol_at_address_func = &symbol_at_address;
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disasm_obj.memory_error_func = &memory_error_func;
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disasm_obj.print_address_func = &print_address;
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disasm_obj.endian = !a->big_endian;
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disasm_obj.fprintf_func = &buf_fprintf;
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disasm_obj.stream = stdout;
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if (a->cpu && *a->cpu) {
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if (!strcmp (a->cpu, "v10+v32")) {
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mode = 1;
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} else
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if (!strcmp (a->cpu, "v10")) {
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mode = 0;
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} else
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if (!strcmp (a->cpu, "v32")) {
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mode = 2;
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} else mode = 2;
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} else mode = 2;
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(void)cris_parse_disassembler_options (&disasm_obj, mode);
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if (a->syntax == R_ASM_SYNTAX_ATT) {
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op->size = print_insn_crisv10_v32_with_register_prefix (
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(bfd_vma)Offset, &disasm_obj);
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} else {
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op->size = print_insn_crisv10_v32_without_register_prefix (
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(bfd_vma)Offset, &disasm_obj);
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}
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if (op->size == -1)
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strncpy (op->buf_asm, " (data)", R_ASM_BUFSIZE);
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return op->size;
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}
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RAsmPlugin r_asm_plugin_cris_gnu = {
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.name = "cris",
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.arch = "cris",
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.cpus = "v10,v32,v10+v32",
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.license = "GPL3",
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.bits = 32,
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.endian = R_SYS_ENDIAN_LITTLE,
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.desc = "Axis Communications 32-bit embedded processor",
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.disassemble = &disassemble
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};
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#ifndef CORELIB
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struct r_lib_struct_t radare_plugin = {
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.type = R_LIB_TYPE_ASM,
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.data = &r_asm_plugin_cris_gnu,
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.version = R2_VERSION
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};
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#endif
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