192 lines
5.1 KiB
C
192 lines
5.1 KiB
C
/*
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* ---------- header ----------------------------------------------------------
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*
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* project kaneton
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*
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* license kaneton
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*
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* file /home/mycure/kane...hitecture/ia32/educational/include/idt.h
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*
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* created renaud voltz [fri feb 10 16:36:20 2006]
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* updated julien quintard [mon apr 11 13:45:20 2011]
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*/
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#ifndef ARCHITECTURE_IDT_H
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#define ARCHITECTURE_IDT_H 1
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/*
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* ---------- macros ----------------------------------------------------------
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*/
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/*
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* these macros define the base entry and the number of entries for the
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* several types of gate: IRQ, exception, IPI or syscall.
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*
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* note that 200 syscalls could be set up but the kernel limits itself
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* to ten which is enough for a microkernel.
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*/
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#define ARCHITECTURE_IDT_EXCEPTION_BASE 0
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#define ARCHITECTURE_IDT_EXCEPTION_SIZE 32
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#define ARCHITECTURE_IDT_IRQ_BASE 32
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#define ARCHITECTURE_IDT_IRQ_SIZE 16
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#define ARCHITECTURE_IDT_IPI_BASE 48
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#define ARCHITECTURE_IDT_IPI_SIZE 8
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#define ARCHITECTURE_IDT_SYSCALL_BASE 56
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#define ARCHITECTURE_IDT_SYSCALL_SIZE 10
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/*
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* these macro define some of the exception handler sources.
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*/
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#define ARCHITECTURE_IDT_EXCEPTION_DE \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 0
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#define ARCHITECTURE_IDT_EXCEPTION_DB \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 1
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#define ARCHITECTURE_IDT_EXCEPTION_BP \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 3
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#define ARCHITECTURE_IDT_EXCEPTION_OF \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 4
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#define ARCHITECTURE_IDT_EXCEPTION_BR \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 5
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#define ARCHITECTURE_IDT_EXCEPTION_UD \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 6
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#define ARCHITECTURE_IDT_EXCEPTION_NM \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 7
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#define ARCHITECTURE_IDT_EXCEPTION_DF \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 8
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#define ARCHITECTURE_IDT_EXCEPTION_TS \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 10
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#define ARCHITECTURE_IDT_EXCEPTION_NP \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 11
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#define ARCHITECTURE_IDT_EXCEPTION_SS \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 12
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#define ARCHITECTURE_IDT_EXCEPTION_GP \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 13
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#define ARCHITECTURE_IDT_EXCEPTION_PF \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 14
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#define ARCHITECTURE_IDT_EXCEPTION_MF \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 16
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#define ARCHITECTURE_IDT_EXCEPTION_AC \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 17
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#define ARCHITECTURE_IDT_EXCEPTION_MC \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 18
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#define ARCHITECTURE_IDT_EXCEPTION_XM \
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ARCHITECTURE_IDT_EXCEPTION_BASE + 19
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/*
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* these macro define some of the IRQ handler sources.
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*/
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#define ARCHITECTURE_IDT_IRQ_PIT \
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ARCHITECTURE_IDT_IRQ_BASE + 0
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#define ARCHITECTURE_IDT_IRQ_KEYBOARD \
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ARCHITECTURE_IDT_IRQ_BASE + 1
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#define ARCHITECTURE_IDT_IRQ_CASCADE \
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ARCHITECTURE_IDT_IRQ_BASE + 2
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#define ARCHITECTURE_IDT_IRQ_COM2 \
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ARCHITECTURE_IDT_IRQ_BASE + 3
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#define ARCHITECTURE_IDT_IRQ_COM1 \
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ARCHITECTURE_IDT_IRQ_BASE + 4
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#define ARCHITECTURE_IDT_IRQ_FLOPPY \
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ARCHITECTURE_IDT_IRQ_BASE + 6
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#define ARCHITECTURE_IDT_IRQ_SPURIOUS \
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ARCHITECTURE_IDT_IRQ_BASE + 7
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#define ARCHITECTURE_IDT_IRQ_RTC \
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ARCHITECTURE_IDT_IRQ_BASE + 8
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#define ARCHITECTURE_IDT_IRQ_ATA1 \
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ARCHITECTURE_IDT_IRQ_BASE + 14
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#define ARCHITECTURE_IDT_IRQ_ATA2 \
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ARCHITECTURE_IDT_IRQ_BASE + 15
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/* Fixed at K1 */
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#define ARCHITECTURE_IDT_SIZE 256
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#define ARCHITECTURE_IDTE_TASK (5LL << 40)
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#define ARCHITECTURE_IDTE_INTERRUPT (6LL << 40)
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#define ARCHITECTURE_IDTE_TRAP (7LL << 40)
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#define ARCHITECTURE_IDTE_32BIT (1LL << 43)
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#define ARCHITECTURE_IDTE_PRESENT (1LL << 47)
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#define ARCHITECTURE_IDTE_OFFSET_SET(_offset_) \
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(at_gdte)((((at_idte)(_offset_) & 0x0000ffff)) | \
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(((at_idte)(_offset_) & 0xffff0000) << 32))
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#define ARCHITECTURE_IDTE_OFFSET_GET(_idte_) \
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(t_paddr)((((_idte_) >> 0) & 0x0000ffff) | \
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(((_idte_) >> 16) & 0xffff0000))
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#define ARCHITECTURE_IDTE_DPL_SET(_privilege_) \
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(((at_idte)(_privilege_) & 0x3) << 45)
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#define ARCHITECTURE_IDTE_DPL_GET(_idte_) \
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(((_idte_) >> 45) & 0x3)
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#define ARCHITECTURE_IDTE_SEGMENT_SET(_segment_) \
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((((t_uint32) _segment_) & 0xffff) << 32)
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/* EOFIXME */
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/*
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* ---------- dependencies ----------------------------------------------------
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*/
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#include <core/types.h>
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/*
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* ---------- types -----------------------------------------------------------
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*/
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typedef t_uint64 at_idte;
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typedef struct
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{
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t_uint16 limit;
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t_paddr base;
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} __attribute__ ((packed)) as_idtr;
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/*
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* ---------- prototypes ------------------------------------------------------
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*
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* ../idt.c
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*/
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/*
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* ../idt.c
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*/
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t_error architecture_idt_dump(void);
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t_error architecture_idt_insert(t_uint16 index,
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t_paddr offset,
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t_flags flags);
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t_error architecture_idt_reserve(t_paddr base,
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t_flags flags,
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t_uint16* index);
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t_error architecture_idt_import(void);
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t_error architecture_idt_export(void);
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t_error architecture_idt_enable(void);
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t_error architecture_idt_disable(void);
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t_error architecture_idt_delete(t_uint16 index);
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t_error architecture_idt_build(void);
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/*
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* eop
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*/
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#endif
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