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/>.
22 #include "sysemu/sysemu.h"
27 static const char * const excp_names
[0x80] = {
28 [TT_TFAULT
] = "Instruction Access Fault",
29 [TT_ILL_INSN
] = "Illegal Instruction",
30 [TT_PRIV_INSN
] = "Privileged Instruction",
31 [TT_NFPU_INSN
] = "FPU Disabled",
32 [TT_WIN_OVF
] = "Window Overflow",
33 [TT_WIN_UNF
] = "Window Underflow",
34 [TT_UNALIGNED
] = "Unaligned Memory Access",
35 [TT_FP_EXCP
] = "FPU Exception",
36 [TT_DFAULT
] = "Data Access Fault",
37 [TT_TOVF
] = "Tag Overflow",
38 [TT_EXTINT
| 0x1] = "External Interrupt 1",
39 [TT_EXTINT
| 0x2] = "External Interrupt 2",
40 [TT_EXTINT
| 0x3] = "External Interrupt 3",
41 [TT_EXTINT
| 0x4] = "External Interrupt 4",
42 [TT_EXTINT
| 0x5] = "External Interrupt 5",
43 [TT_EXTINT
| 0x6] = "External Interrupt 6",
44 [TT_EXTINT
| 0x7] = "External Interrupt 7",
45 [TT_EXTINT
| 0x8] = "External Interrupt 8",
46 [TT_EXTINT
| 0x9] = "External Interrupt 9",
47 [TT_EXTINT
| 0xa] = "External Interrupt 10",
48 [TT_EXTINT
| 0xb] = "External Interrupt 11",
49 [TT_EXTINT
| 0xc] = "External Interrupt 12",
50 [TT_EXTINT
| 0xd] = "External Interrupt 13",
51 [TT_EXTINT
| 0xe] = "External Interrupt 14",
52 [TT_EXTINT
| 0xf] = "External Interrupt 15",
53 [TT_TOVF
] = "Tag Overflow",
54 [TT_CODE_ACCESS
] = "Instruction Access Error",
55 [TT_DATA_ACCESS
] = "Data Access Error",
56 [TT_DIV_ZERO
] = "Division By Zero",
57 [TT_NCP_INSN
] = "Coprocessor Disabled",
61 void sparc_cpu_do_interrupt(CPUState
*cs
)
63 SPARCCPU
*cpu
= SPARC_CPU(cs
);
64 CPUSPARCState
*env
= &cpu
->env
;
65 int cwp
, intno
= cs
->exception_index
;
67 /* Compute PSR before exposing state. */
68 if (env
->cc_op
!= CC_OP_FLAGS
) {
73 if (qemu_loglevel_mask(CPU_LOG_INT
)) {
77 if (intno
< 0 || intno
>= 0x100) {
79 } else if (intno
>= 0x80) {
80 name
= "Trap Instruction";
82 name
= excp_names
[intno
];
88 qemu_log("%6d: %s (v=%02x)\n", count
, name
, intno
);
96 ptr
= (uint8_t *)env
->pc
;
97 for (i
= 0; i
< 16; i
++) {
98 qemu_log(" %02x", ldub(ptr
+ i
));
106 #if !defined(CONFIG_USER_ONLY)
107 if (env
->psret
== 0) {
108 if (cs
->exception_index
== 0x80 &&
109 env
->def
->features
& CPU_FEATURE_TA0_SHUTDOWN
) {
110 qemu_system_shutdown_request();
112 cpu_abort(cs
, "Trap 0x%02x while interrupts disabled, Error state",
113 cs
->exception_index
);
119 cwp
= cpu_cwp_dec(env
, env
->cwp
- 1);
120 cpu_set_cwp(env
, cwp
);
121 env
->regwptr
[9] = env
->pc
;
122 env
->regwptr
[10] = env
->npc
;
123 env
->psrps
= env
->psrs
;
125 env
->tbr
= (env
->tbr
& TBR_BASE_MASK
) | (intno
<< 4);
127 env
->npc
= env
->pc
+ 4;
128 cs
->exception_index
= -1;
130 #if !defined(CONFIG_USER_ONLY)
131 /* IRQ acknowledgment */
132 if ((intno
& ~15) == TT_EXTINT
&& env
->qemu_irq_ack
!= NULL
) {
133 env
->qemu_irq_ack(env
, env
->irq_manager
, intno
);
138 #if !defined(CONFIG_USER_ONLY)
139 static void leon3_cache_control_int(CPUSPARCState
*env
)
143 if (env
->cache_control
& CACHE_CTRL_IF
) {
144 /* Instruction cache state */
145 state
= env
->cache_control
& CACHE_STATE_MASK
;
146 if (state
== CACHE_ENABLED
) {
147 state
= CACHE_FROZEN
;
148 trace_int_helper_icache_freeze();
151 env
->cache_control
&= ~CACHE_STATE_MASK
;
152 env
->cache_control
|= state
;
155 if (env
->cache_control
& CACHE_CTRL_DF
) {
156 /* Data cache state */
157 state
= (env
->cache_control
>> 2) & CACHE_STATE_MASK
;
158 if (state
== CACHE_ENABLED
) {
159 state
= CACHE_FROZEN
;
160 trace_int_helper_dcache_freeze();
163 env
->cache_control
&= ~(CACHE_STATE_MASK
<< 2);
164 env
->cache_control
|= (state
<< 2);
168 void leon3_irq_manager(CPUSPARCState
*env
, void *irq_manager
, int intno
)
170 leon3_irq_ack(irq_manager
, intno
);
171 leon3_cache_control_int(env
);