2 * Sparc32 interrupt helpers
4 * Copyright (c) 2003-2005 Fabrice Bellard
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.
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.
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/>.
26 static const char * const excp_names
[0x80] = {
27 [TT_TFAULT
] = "Instruction Access Fault",
28 [TT_ILL_INSN
] = "Illegal Instruction",
29 [TT_PRIV_INSN
] = "Privileged Instruction",
30 [TT_NFPU_INSN
] = "FPU Disabled",
31 [TT_WIN_OVF
] = "Window Overflow",
32 [TT_WIN_UNF
] = "Window Underflow",
33 [TT_UNALIGNED
] = "Unaligned Memory Access",
34 [TT_FP_EXCP
] = "FPU Exception",
35 [TT_DFAULT
] = "Data Access Fault",
36 [TT_TOVF
] = "Tag Overflow",
37 [TT_EXTINT
| 0x1] = "External Interrupt 1",
38 [TT_EXTINT
| 0x2] = "External Interrupt 2",
39 [TT_EXTINT
| 0x3] = "External Interrupt 3",
40 [TT_EXTINT
| 0x4] = "External Interrupt 4",
41 [TT_EXTINT
| 0x5] = "External Interrupt 5",
42 [TT_EXTINT
| 0x6] = "External Interrupt 6",
43 [TT_EXTINT
| 0x7] = "External Interrupt 7",
44 [TT_EXTINT
| 0x8] = "External Interrupt 8",
45 [TT_EXTINT
| 0x9] = "External Interrupt 9",
46 [TT_EXTINT
| 0xa] = "External Interrupt 10",
47 [TT_EXTINT
| 0xb] = "External Interrupt 11",
48 [TT_EXTINT
| 0xc] = "External Interrupt 12",
49 [TT_EXTINT
| 0xd] = "External Interrupt 13",
50 [TT_EXTINT
| 0xe] = "External Interrupt 14",
51 [TT_EXTINT
| 0xf] = "External Interrupt 15",
52 [TT_TOVF
] = "Tag Overflow",
53 [TT_CODE_ACCESS
] = "Instruction Access Error",
54 [TT_DATA_ACCESS
] = "Data Access Error",
55 [TT_DIV_ZERO
] = "Division By Zero",
56 [TT_NCP_INSN
] = "Coprocessor Disabled",
60 void do_interrupt(CPUState
*env
)
62 int cwp
, intno
= env
->exception_index
;
65 if (qemu_loglevel_mask(CPU_LOG_INT
)) {
69 if (intno
< 0 || intno
>= 0x100) {
71 } else if (intno
>= 0x80) {
72 name
= "Trap Instruction";
74 name
= excp_names
[intno
];
80 qemu_log("%6d: %s (v=%02x) pc=%08x npc=%08x SP=%08x\n",
83 env
->npc
, env
->regwptr
[6]);
84 log_cpu_state(env
, 0);
91 ptr
= (uint8_t *)env
->pc
;
92 for (i
= 0; i
< 16; i
++) {
93 qemu_log(" %02x", ldub(ptr
+ i
));
101 #if !defined(CONFIG_USER_ONLY)
102 if (env
->psret
== 0) {
103 cpu_abort(env
, "Trap 0x%02x while interrupts disabled, Error state",
104 env
->exception_index
);
109 cwp
= cpu_cwp_dec(env
, env
->cwp
- 1);
110 cpu_set_cwp(env
, cwp
);
111 env
->regwptr
[9] = env
->pc
;
112 env
->regwptr
[10] = env
->npc
;
113 env
->psrps
= env
->psrs
;
115 env
->tbr
= (env
->tbr
& TBR_BASE_MASK
) | (intno
<< 4);
117 env
->npc
= env
->pc
+ 4;
118 env
->exception_index
= -1;
120 #if !defined(CONFIG_USER_ONLY)
121 /* IRQ acknowledgment */
122 if ((intno
& ~15) == TT_EXTINT
&& env
->qemu_irq_ack
!= NULL
) {
123 env
->qemu_irq_ack(env
, env
->irq_manager
, intno
);
128 #if !defined(CONFIG_USER_ONLY)
129 static void leon3_cache_control_int(CPUState
*env
)
133 if (env
->cache_control
& CACHE_CTRL_IF
) {
134 /* Instruction cache state */
135 state
= env
->cache_control
& CACHE_STATE_MASK
;
136 if (state
== CACHE_ENABLED
) {
137 state
= CACHE_FROZEN
;
138 trace_int_helper_icache_freeze();
141 env
->cache_control
&= ~CACHE_STATE_MASK
;
142 env
->cache_control
|= state
;
145 if (env
->cache_control
& CACHE_CTRL_DF
) {
146 /* Data cache state */
147 state
= (env
->cache_control
>> 2) & CACHE_STATE_MASK
;
148 if (state
== CACHE_ENABLED
) {
149 state
= CACHE_FROZEN
;
150 trace_int_helper_dcache_freeze();
153 env
->cache_control
&= ~(CACHE_STATE_MASK
<< 2);
154 env
->cache_control
|= (state
<< 2);
158 void leon3_irq_manager(CPUState
*env
, void *irq_manager
, int intno
)
160 leon3_irq_ack(irq_manager
, intno
);
161 leon3_cache_control_int(env
);