i.MX: Rename CCM NOCLK to CLK_NONE for naming consistency.
[qemu/ar7.git] / target-unicore32 / helper.c
blob21f5f35744c7b7f0a303a6e0b5ff129e9780c239
1 /*
2 * Copyright (C) 2010-2012 Guan Xuetao
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.
8 * Contributions from 2012-04-01 on are considered under GPL version 2,
9 * or (at your option) any later version.
12 #include "qemu/osdep.h"
13 #include "cpu.h"
14 #include "exec/gdbstub.h"
15 #include "exec/helper-proto.h"
16 #include "qemu/host-utils.h"
17 #ifndef CONFIG_USER_ONLY
18 #include "ui/console.h"
19 #endif
21 #undef DEBUG_UC32
23 #ifdef DEBUG_UC32
24 #define DPRINTF(fmt, ...) printf("%s: " fmt , __func__, ## __VA_ARGS__)
25 #else
26 #define DPRINTF(fmt, ...) do {} while (0)
27 #endif
29 UniCore32CPU *uc32_cpu_init(const char *cpu_model)
31 return UNICORE32_CPU(cpu_generic_init(TYPE_UNICORE32_CPU, cpu_model));
34 uint32_t HELPER(clo)(uint32_t x)
36 return clo32(x);
39 uint32_t HELPER(clz)(uint32_t x)
41 return clz32(x);
44 #ifndef CONFIG_USER_ONLY
45 void helper_cp0_set(CPUUniCore32State *env, uint32_t val, uint32_t creg,
46 uint32_t cop)
48 UniCore32CPU *cpu = uc32_env_get_cpu(env);
51 * movc pp.nn, rn, #imm9
52 * rn: UCOP_REG_D
53 * nn: UCOP_REG_N
54 * 1: sys control reg.
55 * 2: page table base reg.
56 * 3: data fault status reg.
57 * 4: insn fault status reg.
58 * 5: cache op. reg.
59 * 6: tlb op. reg.
60 * imm9: split UCOP_IMM10 with bit5 is 0
62 switch (creg) {
63 case 1:
64 if (cop != 0) {
65 goto unrecognized;
67 env->cp0.c1_sys = val;
68 break;
69 case 2:
70 if (cop != 0) {
71 goto unrecognized;
73 env->cp0.c2_base = val;
74 break;
75 case 3:
76 if (cop != 0) {
77 goto unrecognized;
79 env->cp0.c3_faultstatus = val;
80 break;
81 case 4:
82 if (cop != 0) {
83 goto unrecognized;
85 env->cp0.c4_faultaddr = val;
86 break;
87 case 5:
88 switch (cop) {
89 case 28:
90 DPRINTF("Invalidate Entire I&D cache\n");
91 return;
92 case 20:
93 DPRINTF("Invalidate Entire Icache\n");
94 return;
95 case 12:
96 DPRINTF("Invalidate Entire Dcache\n");
97 return;
98 case 10:
99 DPRINTF("Clean Entire Dcache\n");
100 return;
101 case 14:
102 DPRINTF("Flush Entire Dcache\n");
103 return;
104 case 13:
105 DPRINTF("Invalidate Dcache line\n");
106 return;
107 case 11:
108 DPRINTF("Clean Dcache line\n");
109 return;
110 case 15:
111 DPRINTF("Flush Dcache line\n");
112 return;
114 break;
115 case 6:
116 if ((cop <= 6) && (cop >= 2)) {
117 /* invalid all tlb */
118 tlb_flush(CPU(cpu), 1);
119 return;
121 break;
122 default:
123 goto unrecognized;
125 return;
126 unrecognized:
127 DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
128 creg, cop);
131 uint32_t helper_cp0_get(CPUUniCore32State *env, uint32_t creg, uint32_t cop)
134 * movc rd, pp.nn, #imm9
135 * rd: UCOP_REG_D
136 * nn: UCOP_REG_N
137 * 0: cpuid and cachetype
138 * 1: sys control reg.
139 * 2: page table base reg.
140 * 3: data fault status reg.
141 * 4: insn fault status reg.
142 * imm9: split UCOP_IMM10 with bit5 is 0
144 switch (creg) {
145 case 0:
146 switch (cop) {
147 case 0:
148 return env->cp0.c0_cpuid;
149 case 1:
150 return env->cp0.c0_cachetype;
152 break;
153 case 1:
154 if (cop == 0) {
155 return env->cp0.c1_sys;
157 break;
158 case 2:
159 if (cop == 0) {
160 return env->cp0.c2_base;
162 break;
163 case 3:
164 if (cop == 0) {
165 return env->cp0.c3_faultstatus;
167 break;
168 case 4:
169 if (cop == 0) {
170 return env->cp0.c4_faultaddr;
172 break;
174 DPRINTF("Wrong register (%d) or wrong operation (%d) in cp0_set!\n",
175 creg, cop);
176 return 0;
179 #ifdef CONFIG_CURSES
181 * FIXME:
182 * 1. curses windows will be blank when switching back
183 * 2. backspace is not handled yet
185 static void putc_on_screen(unsigned char ch)
187 static WINDOW *localwin;
188 static int init;
190 if (!init) {
191 /* Assume 80 * 30 screen to minimize the implementation */
192 localwin = newwin(30, 80, 0, 0);
193 scrollok(localwin, TRUE);
194 init = TRUE;
197 if (isprint(ch)) {
198 wprintw(localwin, "%c", ch);
199 } else {
200 switch (ch) {
201 case '\n':
202 wprintw(localwin, "%c", ch);
203 break;
204 case '\r':
205 /* If '\r' is put before '\n', the curses window will destroy the
206 * last print line. And meanwhile, '\n' implifies '\r' inside. */
207 break;
208 default: /* Not handled, so just print it hex code */
209 wprintw(localwin, "-- 0x%x --", ch);
213 wrefresh(localwin);
215 #else
216 #define putc_on_screen(c) do { } while (0)
217 #endif
219 void helper_cp1_putc(target_ulong x)
221 putc_on_screen((unsigned char)x); /* Output to screen */
222 DPRINTF("%c", x); /* Output to stdout */
224 #endif
226 #ifdef CONFIG_USER_ONLY
227 void switch_mode(CPUUniCore32State *env, int mode)
229 UniCore32CPU *cpu = uc32_env_get_cpu(env);
231 if (mode != ASR_MODE_USER) {
232 cpu_abort(CPU(cpu), "Tried to switch out of user mode\n");
236 void uc32_cpu_do_interrupt(CPUState *cs)
238 cpu_abort(cs, "NO interrupt in user mode\n");
241 int uc32_cpu_handle_mmu_fault(CPUState *cs, vaddr address,
242 int access_type, int mmu_idx)
244 cpu_abort(cs, "NO mmu fault in user mode\n");
245 return 1;
247 #endif
249 bool uc32_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
251 if (interrupt_request & CPU_INTERRUPT_HARD) {
252 UniCore32CPU *cpu = UNICORE32_CPU(cs);
253 CPUUniCore32State *env = &cpu->env;
255 if (!(env->uncached_asr & ASR_I)) {
256 cs->exception_index = UC32_EXCP_INTR;
257 uc32_cpu_do_interrupt(cs);
258 return true;
261 return false;