42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef __KERNEL_DRIVERS_VBR_H__
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# define __KERNEL_DRIVERS_VBR_H__
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//---
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// General exception code
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//---
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#define EXP_CODE_USER_BREAK 0x1e0 // <- DBR (or VBR + 0x100)
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#define EXP_CODE_ACCESS_READ 0x0e0
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#define EXP_CODE_TLB_READ 0x040 // <- VBR + 0x400
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#define EXP_CODE_TLB_WRITE 0x060
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#define EXP_CODE_TLB_INITWRITE 0x080
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#define EXP_CODE_TLB_PROTECT_R 0x0a0
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#define EXP_CODE_TLB_PROTECT_W 0x0c0
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#define EXP_CODE_ACCESS_WRITE 0x100
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#define EXP_CODE_TRAPA 0x160
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#define EXP_CODE_BAD_INSTR 0x180
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#define EXP_CODE_BAD_SLOTINSTR 0x1a0
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//---
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// Interruption code
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//---
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//TODO: chech SH7724 code validity (?)
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#define INT_CODE_TMU0_TUNI0 0x400
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#define INT_CODE_TMU0_TUNI1 0x420
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#define INT_CODE_TMU0_TUNI2 0x440
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#define INT_CODE_KEYSC 0xbe0
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// Macros helpers
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// @note:
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// First interrupt code start at 0x400 (TLB miss are redirect)
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// and the last interrupt code is 0xfe0 (undocumented)
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// Each interrupt code are gapped by 0x20
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#define VBR_GET_INTERRUPT_CODE(id, code) (id = ((code - 0x400) / 0x20))
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#define VBR_INTERRUPT_NB ((0xfe0 - 0x400) / 0x20)
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// Driver primitives
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extern void *vbr_interrupt_set(int intcode, void (*handler)(void));
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extern void *vbr_set(void *vbr);
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extern void *vbr_get(void);
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#endif /*__KERNEL_DRIVERS_VBR_H__*/
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