source: trunk/libs/newlib/src/include/opcode/rl78.h @ 487

Last change on this file since 487 was 444, checked in by satin@…, 7 years ago

add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
File size: 4.5 KB
RevLine 
[444]1/* Opcode decoder for the Renesas RL78
2   Copyright 2011
3   Free Software Foundation, Inc.
4   Written by DJ Delorie <dj@redhat.com>
5
6   This file is part of GDB, the GNU Debugger and GAS, the GNU Assembler.
7
8   This program 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 of the License, or
11   (at your option) any later version.
12
13   This program is distributed in the hope that it will be useful,
14   but WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16   GNU General Public License for more details.
17
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, MA
21   02110-1301, USA.  */
22
23/* The RL78 decoder in libopcodes is used by the simulator, gdb's
24   analyzer, and the disassembler.  Given an opcode data source, it
25   decodes the next opcode into the following structures.  */
26
27#ifndef RL78_OPCODES_H_INCLUDED
28#define RL78_OPCODES_H_INCLUDED
29
30/* For the purposes of these structures, the RL78 registers are as
31   follows, despite most of these being memory-mapped and
32   bank-switched:  */
33typedef enum {
34  RL78_Reg_None,
35  /* The order of these matches the encodings.  */
36  RL78_Reg_X,
37  RL78_Reg_A,
38  RL78_Reg_C,
39  RL78_Reg_B,
40  RL78_Reg_E,
41  RL78_Reg_D,
42  RL78_Reg_L,
43  RL78_Reg_H,
44  /* The order of these matches the encodings.  */
45  RL78_Reg_AX,
46  RL78_Reg_BC,
47  RL78_Reg_DE,
48  RL78_Reg_HL,
49  /* Unordered.  */
50  RL78_Reg_SP,
51  RL78_Reg_PSW,
52  RL78_Reg_CS,
53  RL78_Reg_ES,
54  RL78_Reg_PMC,
55  RL78_Reg_MEM
56} RL78_Register;
57
58typedef enum
59{
60  RL78_Byte = 0,
61  RL78_Word
62} RL78_Size;
63
64typedef enum {
65  RL78_Condition_T,
66  RL78_Condition_F,
67  RL78_Condition_C,
68  RL78_Condition_NC,
69  RL78_Condition_H,
70  RL78_Condition_NH,
71  RL78_Condition_Z,
72  RL78_Condition_NZ
73} RL78_Condition;
74
75typedef enum {
76  RL78_Operand_None = 0,
77  RL78_Operand_Immediate,       /* #addend */
78  RL78_Operand_Register,        /* reg */
79  RL78_Operand_Indirect,        /* [reg + reg2 + addend] */
80  RL78_Operand_Bit,             /* reg.bit */
81  RL78_Operand_BitIndirect,     /* [reg+reg2+addend].bit */
82  RL78_Operand_PreDec,          /* [--reg] = push */
83  RL78_Operand_PostInc          /* [reg++] = pop */
84} RL78_Operand_Type;
85
86typedef enum
87{
88  RLO_unknown,
89  RLO_add,                      /* d += s */
90  RLO_addc,                     /* d += s + CY */
91  RLO_and,                      /* d &= s (byte, word, bit) */
92  RLO_branch,                   /* pc = d */
93  RLO_branch_cond,              /* pc = d if cond(src) */
94  RLO_branch_cond_clear,        /* pc = d if cond(src), and clear(src) */
95  RLO_break,                    /* BRK */
96  RLO_call,                     /* call */
97  RLO_cmp,                      /* cmp d, s */
98  RLO_divhu,                    /* DIVHU */
99  RLO_divwu,                    /* DIVWU */
100  RLO_halt,                     /* HALT */
101  RLO_mov,                      /* d = s */
102  RLO_mach,                     /* MACH */
103  RLO_machu,                    /* MACHU */
104  RLO_mulu,                     /* MULU */
105  RLO_mulh,                     /* MULH */
106  RLO_mulhu,                    /* MULHU */
107  RLO_nop,                      /* NOP */
108  RLO_or,                       /* d |= s */
109  RLO_ret,                      /* RET */
110  RLO_reti,                     /* RETI */
111  RLO_rol,                      /* d <<= s, MSB to LSB and CY */
112  RLO_rolc,                     /* d <<= s, MSB to CY, CY, to LSB */
113  RLO_ror,                      /* d >>= s, LSB to MSB and CY */
114  RLO_rorc,                     /* d >>= s, LSB to CY, CY, to MSB */
115  RLO_sar,                      /* d >>= s, signed */
116  RLO_sel,                      /* rb = s */
117  RLO_shr,                      /* d >>= s, unsigned */
118  RLO_shl,                      /* d <<= s */
119  RLO_skip,                     /* skip next insn is cond(s) */
120  RLO_stop,                     /* STOP */
121  RLO_sub,                      /* d -= s */
122  RLO_subc,                     /* d -= s - CY */
123  RLO_xch,                      /* swap d, s  */
124  RLO_xor,                      /* d ^= s */
125} RL78_Opcode_ID;
126
127typedef struct {
128  RL78_Operand_Type  type;
129  int              addend;
130  RL78_Register    reg : 8;
131  RL78_Register    reg2 : 8;
132  unsigned char    bit_number : 4;
133  unsigned char    condition : 3;
134  unsigned char    use_es : 1;
135} RL78_Opcode_Operand;
136
137/* PSW flag bits */
138#define RL78_PSW_IE     0x80
139#define RL78_PSW_Z      0x40
140#define RL78_PSW_RBS1   0x20
141#define RL78_PSW_AC     0x10
142#define RL78_PSW_RBS0   0x08
143#define RL78_PSW_ISP1   0x04
144#define RL78_PSW_ISP0   0x02
145#define RL78_PSW_CY     0x01
146
147#define RL78_SFR_SP     0xffff8
148#define RL78_SFR_PSW    0xffffa
149#define RL78_SFR_CS     0xffffc
150#define RL78_SFR_ES     0xffffd
151#define RL78_SFR_PMC    0xffffe
152#define RL78_SFR_MEM    0xfffff
153
154typedef struct
155{
156  int lineno;
157  RL78_Opcode_ID        id:24;
158  unsigned              flags:8; /* PSW mask, for side effects only */
159  int                   n_bytes;
160  char *                syntax;
161  RL78_Size             size;
162  /* By convention, these are destination, source.  */
163  RL78_Opcode_Operand   op[2];
164} RL78_Opcode_Decoded;
165
166int rl78_decode_opcode (unsigned long, RL78_Opcode_Decoded *, int (*)(void *), void *);
167
168#endif
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