2 * Copyright (c) 2001-2004 Jakub Jermar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 /** @addtogroup ia32interrupt
35 #ifndef KERN_ia32_INTERRUPT_H_
36 #define KERN_ia32_INTERRUPT_H_
38 #include <arch/types.h>
41 #define IVT_ITEMS IDT_ITEMS
48 #define IVT_IRQBASE (IVT_EXCBASE + EXC_COUNT)
49 #define IVT_FREEBASE (IVT_IRQBASE + IRQ_COUNT)
54 #define IRQ_PIC_SPUR 7
57 /* this one must have four least significant bits set to ones */
58 #define VECTOR_APIC_SPUR (IVT_ITEMS - 1)
60 #if (((VECTOR_APIC_SPUR + 1) % 16) || VECTOR_APIC_SPUR >= IVT_ITEMS)
61 #error Wrong definition of VECTOR_APIC_SPUR
64 #define VECTOR_DEBUG 1
65 #define VECTOR_CLK (IVT_IRQBASE + IRQ_CLK)
66 #define VECTOR_PIC_SPUR (IVT_IRQBASE + IRQ_PIC_SPUR)
67 #define VECTOR_SYSCALL IVT_FREEBASE
68 #define VECTOR_TLB_SHOOTDOWN_IPI (IVT_FREEBASE + 1)
69 #define VECTOR_DEBUG_IPI (IVT_FREEBASE + 2)
92 /** Return true if exception happened while in userspace */
93 static inline int istate_from_uspace(istate_t
*istate
)
95 return !(istate
->eip
& 0x80000000);
98 static inline void istate_set_retaddr(istate_t
*istate
, uintptr_t retaddr
)
100 istate
->eip
= retaddr
;
103 static inline unative_t
istate_get_pc(istate_t
*istate
)
108 extern void (* disable_irqs_function
)(uint16_t irqmask
);
109 extern void (* enable_irqs_function
)(uint16_t irqmask
);
110 extern void (* eoi_function
)(void);
112 extern void decode_istate(istate_t
*istate
);
113 extern void interrupt_init(void);
114 extern void trap_virtual_enable_irqs(uint16_t irqmask
);
115 extern void trap_virtual_disable_irqs(uint16_t irqmask
);