1 /* pj-dis.c -- Disassemble picoJava instructions.
2 Copyright 1999, 2000, 2001, 2002, 2005, 2007, 2012
3 Free Software Foundation, Inc.
4 Contributed by Steve Chamberlain, of Transmeta (sac@pobox.com).
6 This file is part of the GNU opcodes library.
8 This library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 It is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
25 #include "opcode/pj.h"
28 extern const pj_opc_info_t pj_opc_info[512];
31 get_int (bfd_vma memaddr, int *iptr, struct disassemble_info *info)
33 unsigned char ival[4];
34 int status = info->read_memory_func (memaddr, ival, 4, info);
36 *iptr = (ival[0] << 24)
45 print_insn_pj (bfd_vma addr, struct disassemble_info *info)
47 fprintf_ftype fprintf_fn = info->fprintf_func;
48 void *stream = info->stream;
52 if ((status = info->read_memory_func (addr, &opcode, 1, info)))
59 if ((status = info->read_memory_func (addr + 1, &byte_2, 1, info)))
61 fprintf_fn (stream, "%s\t", pj_opc_info[opcode + byte_2].u.name);
67 int insn_start = addr;
68 const pj_opc_info_t *op = &pj_opc_info[opcode];
72 fprintf_fn (stream, "%s", op->u.name);
74 /* The tableswitch instruction is followed by the default
75 address, low value, high value and the destinations. */
77 if (strcmp (op->u.name, "tableswitch") == 0)
83 addr = (addr + 3) & ~3;
84 if ((status = get_int (addr, &val, info)))
87 fprintf_fn (stream, " default: ");
88 (*info->print_address_func) (val + insn_start, info);
91 if ((status = get_int (addr, &lowval, info)))
95 if ((status = get_int (addr, &highval, info)))
99 while (lowval <= highval)
101 if ((status = get_int (addr, &val, info)))
103 fprintf_fn (stream, " %d:[", lowval);
104 (*info->print_address_func) (val + insn_start, info);
105 fprintf_fn (stream, " ]");
109 return addr - insn_start;
112 /* The lookupswitch instruction is followed by the default
113 address, element count and pairs of values and
115 if (strcmp (op->u.name, "lookupswitch") == 0)
120 addr = (addr + 3) & ~3;
121 if ((status = get_int (addr, &val, info)))
125 fprintf_fn (stream, " default: ");
126 (*info->print_address_func) (val + insn_start, info);
128 if ((status = get_int (addr, &count, info)))
134 if ((status = get_int (addr, &val, info)))
137 fprintf_fn (stream, " %d:[", val);
139 if ((status = get_int (addr, &val, info)))
143 (*info->print_address_func) (val + insn_start, info);
144 fprintf_fn (stream, " ]");
146 return addr - insn_start;
149 for (a = 0; op->arg[a]; a++)
151 unsigned char data[4];
154 int size = ASIZE (op->arg[a]);
156 if ((status = info->read_memory_func (addr, data, size, info)))
159 val = (UNS (op->arg[0]) || ((data[0] & 0x80) == 0)) ? 0 : -1;
161 for (i = 0; i < size; i++)
162 val = (val << 8) | (data[i] & 0xff);
164 if (PCREL (op->arg[a]))
165 (*info->print_address_func) (val + insn_start, info);
167 fprintf_fn (stream, "%s%d", sep, val);
176 info->memory_error_func (status, addr, info);