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[qemu.git] / target / hppa / helper.c
1 /*
2 * HPPA emulation cpu helpers for qemu.
3 *
4 * Copyright (c) 2016 Richard Henderson <rth@twiddle.net>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "qemu/osdep.h"
21
22 #include "cpu.h"
23 #include "fpu/softfloat.h"
24 #include "exec/exec-all.h"
25 #include "exec/helper-proto.h"
26 #include "qemu/qemu-print.h"
27
28 target_ureg cpu_hppa_get_psw(CPUHPPAState *env)
29 {
30 target_ureg psw;
31
32 /* Fold carry bits down to 8 consecutive bits. */
33 /* ??? Needs tweaking for hppa64. */
34 /* .......b...c...d...e...f...g...h */
35 psw = (env->psw_cb >> 4) & 0x01111111;
36 /* .......b..bc..cd..de..ef..fg..gh */
37 psw |= psw >> 3;
38 /* .............bcd............efgh */
39 psw |= (psw >> 6) & 0x000f000f;
40 /* .........................bcdefgh */
41 psw |= (psw >> 12) & 0xf;
42 psw |= env->psw_cb_msb << 7;
43 psw = (psw & 0xff) << 8;
44
45 psw |= env->psw_n * PSW_N;
46 psw |= (env->psw_v < 0) * PSW_V;
47 psw |= env->psw;
48
49 return psw;
50 }
51
52 void cpu_hppa_put_psw(CPUHPPAState *env, target_ureg psw)
53 {
54 target_ureg old_psw = env->psw;
55 target_ureg cb = 0;
56
57 env->psw = psw & ~(PSW_N | PSW_V | PSW_CB);
58 env->psw_n = (psw / PSW_N) & 1;
59 env->psw_v = -((psw / PSW_V) & 1);
60 env->psw_cb_msb = (psw >> 15) & 1;
61
62 cb |= ((psw >> 14) & 1) << 28;
63 cb |= ((psw >> 13) & 1) << 24;
64 cb |= ((psw >> 12) & 1) << 20;
65 cb |= ((psw >> 11) & 1) << 16;
66 cb |= ((psw >> 10) & 1) << 12;
67 cb |= ((psw >> 9) & 1) << 8;
68 cb |= ((psw >> 8) & 1) << 4;
69 env->psw_cb = cb;
70
71 /* If PSW_P changes, it affects how we translate addresses. */
72 if ((psw ^ old_psw) & PSW_P) {
73 #ifndef CONFIG_USER_ONLY
74 tlb_flush_by_mmuidx(env_cpu(env), 0xf);
75 #endif
76 }
77 }
78
79 void hppa_cpu_dump_state(CPUState *cs, FILE *f, int flags)
80 {
81 HPPACPU *cpu = HPPA_CPU(cs);
82 CPUHPPAState *env = &cpu->env;
83 target_ureg psw = cpu_hppa_get_psw(env);
84 target_ureg psw_cb;
85 char psw_c[20];
86 int i;
87
88 qemu_fprintf(f, "IA_F " TARGET_FMT_lx " IA_B " TARGET_FMT_lx "\n",
89 hppa_form_gva_psw(psw, env->iasq_f, env->iaoq_f),
90 hppa_form_gva_psw(psw, env->iasq_b, env->iaoq_b));
91
92 psw_c[0] = (psw & PSW_W ? 'W' : '-');
93 psw_c[1] = (psw & PSW_E ? 'E' : '-');
94 psw_c[2] = (psw & PSW_S ? 'S' : '-');
95 psw_c[3] = (psw & PSW_T ? 'T' : '-');
96 psw_c[4] = (psw & PSW_H ? 'H' : '-');
97 psw_c[5] = (psw & PSW_L ? 'L' : '-');
98 psw_c[6] = (psw & PSW_N ? 'N' : '-');
99 psw_c[7] = (psw & PSW_X ? 'X' : '-');
100 psw_c[8] = (psw & PSW_B ? 'B' : '-');
101 psw_c[9] = (psw & PSW_C ? 'C' : '-');
102 psw_c[10] = (psw & PSW_V ? 'V' : '-');
103 psw_c[11] = (psw & PSW_M ? 'M' : '-');
104 psw_c[12] = (psw & PSW_F ? 'F' : '-');
105 psw_c[13] = (psw & PSW_R ? 'R' : '-');
106 psw_c[14] = (psw & PSW_Q ? 'Q' : '-');
107 psw_c[15] = (psw & PSW_P ? 'P' : '-');
108 psw_c[16] = (psw & PSW_D ? 'D' : '-');
109 psw_c[17] = (psw & PSW_I ? 'I' : '-');
110 psw_c[18] = '\0';
111 psw_cb = ((env->psw_cb >> 4) & 0x01111111) | (env->psw_cb_msb << 28);
112
113 qemu_fprintf(f, "PSW " TREG_FMT_lx " CB " TREG_FMT_lx " %s\n",
114 psw, psw_cb, psw_c);
115
116 for (i = 0; i < 32; i++) {
117 qemu_fprintf(f, "GR%02d " TREG_FMT_lx "%c", i, env->gr[i],
118 (i & 3) == 3 ? '\n' : ' ');
119 }
120 #ifndef CONFIG_USER_ONLY
121 for (i = 0; i < 8; i++) {
122 qemu_fprintf(f, "SR%02d %08x%c", i, (uint32_t)(env->sr[i] >> 32),
123 (i & 3) == 3 ? '\n' : ' ');
124 }
125 #endif
126 qemu_fprintf(f, "\n");
127
128 /* ??? FR */
129 }