int print_insn_xtensa(bfd_vma memaddr, struct disassemble_info *info) { xtensa_isa isa = info->private_data; xtensa_insnbuf insnbuf = xtensa_insnbuf_alloc(isa); xtensa_insnbuf slotbuf = xtensa_insnbuf_alloc(isa); bfd_byte *buffer = g_malloc(1); int status = info->read_memory_func(memaddr, buffer, 1, info); xtensa_format fmt; unsigned slot, slots; unsigned len; if (status) { info->memory_error_func(status, memaddr, info); len = -1; goto out; } len = xtensa_isa_length_from_chars(isa, buffer); if (len == XTENSA_UNDEFINED) { info->fprintf_func(info->stream, ".byte 0x%02x", buffer[0]); len = 1; goto out; } buffer = g_realloc(buffer, len); status = info->read_memory_func(memaddr + 1, buffer + 1, len - 1, info); if (status) { info->fprintf_func(info->stream, ".byte 0x%02x", buffer[0]); info->memory_error_func(status, memaddr + 1, info); len = 1; goto out; } xtensa_insnbuf_from_chars(isa, insnbuf, buffer, len); fmt = xtensa_format_decode(isa, insnbuf); if (fmt == XTENSA_UNDEFINED) { unsigned i; for (i = 0; i < len; ++i) { info->fprintf_func(info->stream, "%s 0x%02x", i ? ", " : ".byte ", buffer[i]); } goto out; } slots = xtensa_format_num_slots(isa, fmt); if (slots > 1) { info->fprintf_func(info->stream, "{ "); } for (slot = 0; slot < slots; ++slot) { xtensa_opcode opc; unsigned opnd, vopnd, opnds; if (slot) { info->fprintf_func(info->stream, "; "); } xtensa_format_get_slot(isa, fmt, slot, insnbuf, slotbuf); opc = xtensa_opcode_decode(isa, fmt, slot, slotbuf); if (opc == XTENSA_UNDEFINED) { info->fprintf_func(info->stream, "???"); continue; } opnds = xtensa_opcode_num_operands(isa, opc); info->fprintf_func(info->stream, "%s", xtensa_opcode_name(isa, opc)); for (opnd = vopnd = 0; opnd < opnds; ++opnd) { if (xtensa_operand_is_visible(isa, opc, opnd)) { uint32_t v = 0xbadc0de; int rc; info->fprintf_func(info->stream, vopnd ? ", " : "\t"); xtensa_operand_get_field(isa, opc, opnd, fmt, slot, slotbuf, &v); rc = xtensa_operand_decode(isa, opc, opnd, &v); if (rc == XTENSA_UNDEFINED) { info->fprintf_func(info->stream, "???"); } else if (xtensa_operand_is_register(isa, opc, opnd)) { xtensa_regfile rf = xtensa_operand_regfile(isa, opc, opnd); info->fprintf_func(info->stream, "%s%d", xtensa_regfile_shortname(isa, rf), v); } else if (xtensa_operand_is_PCrelative(isa, opc, opnd)) { xtensa_operand_undo_reloc(isa, opc, opnd, &v, memaddr); info->fprintf_func(info->stream, "0x%x", v); } else { info->fprintf_func(info->stream, "%d", v); } ++vopnd; } } } if (slots > 1) { info->fprintf_func(info->stream, " }"); } out: g_free(buffer); xtensa_insnbuf_free(isa, insnbuf); xtensa_insnbuf_free(isa, slotbuf); return len; }