aboutsummaryrefslogtreecommitdiff
path: root/target/hexagon/opcodes.c
blob: 35d790cdd5b2a775cb2decf061d7e259a84ad79f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
/*
 *  Copyright(c) 2019-2021 Qualcomm Innovation Center, Inc. All Rights Reserved.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*
 * opcodes.c
 *
 * data tables generated automatically
 * Maybe some functions too
 */

#include "qemu/osdep.h"
#include "attribs.h"
#include "decode.h"

#define VEC_DESCR(A, B, C) DESCR(A, B, C)
#define DONAME(X) #X

const char * const opcode_names[] = {
#define OPCODE(IID) DONAME(IID)
#include "opcodes_def_generated.h.inc"
    NULL
#undef OPCODE
};

const char * const opcode_reginfo[] = {
#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
#define REGINFO(TAG, REGINFO, RREGS, WREGS) REGINFO,
#include "op_regs_generated.h.inc"
    NULL
#undef REGINFO
#undef IMMINFO
};


const char * const opcode_rregs[] = {
#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
#define REGINFO(TAG, REGINFO, RREGS, WREGS) RREGS,
#include "op_regs_generated.h.inc"
    NULL
#undef REGINFO
#undef IMMINFO
};


const char * const opcode_wregs[] = {
#define IMMINFO(TAG, SIGN, SIZE, SHAMT, SIGN2, SIZE2, SHAMT2)    /* nothing */
#define REGINFO(TAG, REGINFO, RREGS, WREGS) WREGS,
#include "op_regs_generated.h.inc"
    NULL
#undef REGINFO
#undef IMMINFO
};

const char * const opcode_short_semantics[] = {
#define DEF_SHORTCODE(TAG, SHORTCODE)              [TAG] = #SHORTCODE,
#include "shortcode_generated.h.inc"
#undef DEF_SHORTCODE
    NULL
};

DECLARE_BITMAP(opcode_attribs[XX_LAST_OPCODE], A_ZZ_LASTATTRIB);

static void init_attribs(int tag, ...)
{
    va_list ap;
    int attr;
    va_start(ap, tag);
    while ((attr = va_arg(ap, int)) != 0) {
        set_bit(attr, opcode_attribs[tag]);
    }
    va_end(ap);
}

const OpcodeEncoding opcode_encodings[] = {
#define DEF_ENC32(OPCODE, ENCSTR) \
    [OPCODE] = { .encoding = ENCSTR },

#define DEF_ENC_SUBINSN(OPCODE, CLASS, ENCSTR) \
    [OPCODE] = { .encoding = ENCSTR, .enc_class = CLASS },

#define DEF_EXT_ENC(OPCODE, CLASS, ENCSTR) \
    [OPCODE] = { .encoding = ENCSTR, .enc_class = CLASS },

#include "imported/encode.def"

#undef DEF_ENC32
#undef DEF_ENC_SUBINSN
#undef DEF_EXT_ENC
};

void opcode_init(void)
{
    init_attribs(0, 0);

#define ATTRIBS(...) , ## __VA_ARGS__, 0
#define OP_ATTRIB(TAG, ARGS) init_attribs(TAG ARGS);
#include "op_attribs_generated.h.inc"
#undef OP_ATTRIB
#undef ATTRIBS

    decode_init();
}


#define NEEDLE "IMMEXT("

int opcode_which_immediate_is_extended(Opcode opcode)
{
    const char *p;

    g_assert(opcode < XX_LAST_OPCODE);
    g_assert(GET_ATTRIB(opcode, A_EXTENDABLE));

    p = opcode_short_semantics[opcode];
    p = strstr(p, NEEDLE);
    g_assert(p);
    p += strlen(NEEDLE);
    while (isspace(*p)) {
        p++;
    }
    /* lower is always imm 0, upper always imm 1. */
    if (islower(*p)) {
        return 0;
    } else if (isupper(*p)) {
        return 1;
    } else {
        g_assert_not_reached();
    }
}