1 /* pj-dis.c -- Disassemble picoJava instructions.
2 Copyright (C) 1999-2019 Free Software Foundation, Inc.
3 Contributed by Steve Chamberlain, of Transmeta (sac@pobox.com).
5 This file is part of the GNU opcodes library.
7 This library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 It is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "opcode/pj.h"
25 #include "disassemble.h"
27 extern const pj_opc_info_t pj_opc_info[512];
30 get_int (bfd_vma memaddr, int *iptr, struct disassemble_info *info)
32 unsigned char ival[4];
33 int status = info->read_memory_func (memaddr, ival, 4, info);
35 *iptr = (ival[0] << 24)
44 print_insn_pj (bfd_vma addr, struct disassemble_info *info)
46 fprintf_ftype fprintf_fn = info->fprintf_func;
47 void *stream = info->stream;
51 if ((status = info->read_memory_func (addr, &opcode, 1, info)))
58 if ((status = info->read_memory_func (addr + 1, &byte_2, 1, info)))
60 fprintf_fn (stream, "%s\t", pj_opc_info[opcode + byte_2].u.name);
66 int insn_start = addr;
67 const pj_opc_info_t *op = &pj_opc_info[opcode];
71 fprintf_fn (stream, "%s", op->u.name);
73 /* The tableswitch instruction is followed by the default
74 address, low value, high value and the destinations. */
76 if (strcmp (op->u.name, "tableswitch") == 0)
82 addr = (addr + 3) & ~3;
83 if ((status = get_int (addr, &val, info)))
86 fprintf_fn (stream, " default: ");
87 (*info->print_address_func) (val + insn_start, info);
90 if ((status = get_int (addr, &lowval, info)))
94 if ((status = get_int (addr, &highval, info)))
98 while (lowval <= highval)
100 if ((status = get_int (addr, &val, info)))
102 fprintf_fn (stream, " %d:[", lowval);
103 (*info->print_address_func) (val + insn_start, info);
104 fprintf_fn (stream, " ]");
108 return addr - insn_start;
111 /* The lookupswitch instruction is followed by the default
112 address, element count and pairs of values and
114 if (strcmp (op->u.name, "lookupswitch") == 0)
119 addr = (addr + 3) & ~3;
120 if ((status = get_int (addr, &val, info)))
124 fprintf_fn (stream, " default: ");
125 (*info->print_address_func) (val + insn_start, info);
127 if ((status = get_int (addr, &count, info)))
133 if ((status = get_int (addr, &val, info)))
136 fprintf_fn (stream, " %d:[", val);
138 if ((status = get_int (addr, &val, info)))
142 (*info->print_address_func) (val + insn_start, info);
143 fprintf_fn (stream, " ]");
145 return addr - insn_start;
148 for (a = 0; op->arg[a]; a++)
150 unsigned char data[4];
153 int size = ASIZE (op->arg[a]);
155 if ((status = info->read_memory_func (addr, data, size, info)))
158 val = (UNS (op->arg[0]) || ((data[0] & 0x80) == 0)) ? 0 : -1;
160 for (i = 0; i < size; i++)
161 val = (val << 8) | (data[i] & 0xff);
163 if (PCREL (op->arg[a]))
164 (*info->print_address_func) (val + insn_start, info);
166 fprintf_fn (stream, "%s%d", sep, val);
175 info->memory_error_func (status, addr, info);