linux-user, scripts: add a script to update syscall.tbl
[qemu.git] / target / unicore32 / helper.c
1 /*
2 * Copyright (C) 2010-2012 Guan Xuetao
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * Contributions from 2012-04-01 on are considered under GPL version 2,
9 * or (at your option) any later version.
10 */
11
12 #include "qemu/osdep.h"
13 #include "cpu.h"
14 #include "exec/exec-all.h"
15 #include "exec/gdbstub.h"
16 #include "exec/helper-proto.h"
17 #include "qemu/host-utils.h"
18 #ifndef CONFIG_USER_ONLY
19 #include "ui/console.h"
20 #endif
21
22 #undef DEBUG_UC32
23
24 #ifdef DEBUG_UC32
25 #define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
26 #else
27 #define DPRINTF(fmt, ...) do {} while (0)
28 #endif
29
30 #ifndef CONFIG_USER_ONLY
31 void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg,
32 uint32_t cop)
33 {
34 /*
35 * movc pp.nn, rn, #imm9
36 * rn: UCOP_REG_D
37 * nn: UCOP_REG_N
38 * 1: sys control reg.
39 * 2: page table base reg.
40 * 3: data fault status reg.
41 * 4: insn fault status reg.
42 * 5: cache op. reg.
43 * 6: tlb op. reg.
44 * imm9: split UCOP_IMM10 with bit5 is 0
45 */
46 switch (creg) {
47 case 1:
48 if (cop != 0) {
49 goto unrecognized;
50 }
51 env->cp0.c1_sys = val;
52 break;
53 case 2:
54 if (cop != 0) {
55 goto unrecognized;
56 }
57 env->cp0.c2_base = val;
58 break;
59 case 3:
60 if (cop != 0) {
61 goto unrecognized;
62 }
63 env->cp0.c3_faultstatus = val;
64 break;
65 case 4:
66 if (cop != 0) {
67 goto unrecognized;
68 }
69 env->cp0.c4_faultaddr = val;
70 break;
71 case 5:
72 switch (cop) {
73 case 28:
74 DPRINTF("Invalidate Entire I&D cache\n");
75 return;
76 case 20:
77 DPRINTF("Invalidate Entire Icache\n");
78 return;
79 case 12:
80 DPRINTF("Invalidate Entire Dcache\n");
81 return;
82 case 10:
83 DPRINTF("Clean Entire Dcache\n");
84 return;
85 case 14:
86 DPRINTF("Flush Entire Dcache\n");
87 return;
88 case 13:
89 DPRINTF("Invalidate Dcache line\n");
90 return;
91 case 11:
92 DPRINTF("Clean Dcache line\n");
93 return;
94 case 15:
95 DPRINTF("Flush Dcache line\n");
96 return;
97 }
98 break;
99 case 6:
100 if ((cop <= 6) && (cop >= 2)) {
101 /* invalid all tlb */
102 tlb_flush(env_cpu(env));
103 return;
104 }
105 break;
106 default:
107 goto unrecognized;
108 }
109 return;
110 unrecognized:
111 DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
112 creg, cop);
113 }
114
115 uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop)
116 {
117 /*
118 * movc rd, pp.nn, #imm9
119 * rd: UCOP_REG_D
120 * nn: UCOP_REG_N
121 * 0: cpuid and cachetype
122 * 1: sys control reg.
123 * 2: page table base reg.
124 * 3: data fault status reg.
125 * 4: insn fault status reg.
126 * imm9: split UCOP_IMM10 with bit5 is 0
127 */
128 switch (creg) {
129 case 0:
130 switch (cop) {
131 case 0:
132 return env->cp0.c0_cpuid;
133 case 1:
134 return env->cp0.c0_cachetype;
135 }
136 break;
137 case 1:
138 if (cop == 0) {
139 return env->cp0.c1_sys;
140 }
141 break;
142 case 2:
143 if (cop == 0) {
144 return env->cp0.c2_base;
145 }
146 break;
147 case 3:
148 if (cop == 0) {
149 return env->cp0.c3_faultstatus;
150 }
151 break;
152 case 4:
153 if (cop == 0) {
154 return env->cp0.c4_faultaddr;
155 }
156 break;
157 }
158 DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
159 creg, cop);
160 return 0;
161 }
162
163 #ifdef CONFIG_CURSES
164
165 /* KEY_EVENT is defined in wincon.h and in curses.h. Avoid redefinition. */
166 #undef KEY_EVENT
167 #include <curses.h>
168 #undef KEY_EVENT
169
170 /*
171 * FIXME:
172 * 1. curses windows will be blank when switching back
173 * 2. backspace is not handled yet
174 */
175 static void putc_on_screen(unsigned char ch)
176 {
177 static WINDOW *localwin;
178 static int init;
179
180 if (!init) {
181 /* Assume 80 * 30 screen to minimize the implementation */
182 localwin = newwin(30, 80, 0, 0);
183 scrollok(localwin, TRUE);
184 init = TRUE;
185 }
186
187 if (isprint(ch)) {
188 wprintw(localwin, "%c", ch);
189 } else {
190 switch (ch) {
191 case '\n':
192 wprintw(localwin, "%c", ch);
193 break;
194 case '\r':
195 /* If '\r' is put before '\n', the curses window will destroy the
196 * last print line. And meanwhile, '\n' implifies '\r' inside. */
197 break;
198 default: /* Not handled, so just print it hex code */
199 wprintw(localwin, "-- 0x%x --", ch);
200 }
201 }
202
203 wrefresh(localwin);
204 }
205 #else
206 #define putc_on_screen(c) do { } while (0)
207 #endif
208
209 void helper_cp1_putc(target_ulong x)
210 {
211 putc_on_screen((unsigned char)x); /* Output to screen */
212 DPRINTF("%c", x); /* Output to stdout */
213 }
214 #endif
215
216 bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
217 {
218 if (interrupt_request & CPU_INTERRUPT_HARD) {
219 UniCore32CPU *cpu = UNICORE32_CPU(cs);
220 CPUUniCore32State *env = &cpu->env;
221
222 if (!(env->uncached_asr & ASR_I)) {
223 cs->exception_index = UC32_EXCP_INTR;
224 uc32_cpu_do_interrupt(cs);
225 return true;
226 }
227 }
228 return false;
229 }