2024-04-09 23:46:56 +08:00
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%macro ISR_NOERRCODE 1 ; nasm宏：定义ISR_NOERRCODE，接收一个参数
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[global isr%1] ; %1代表第一个参数
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isr%1:
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cli
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push byte 0
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push %1
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jmp isr_common_stub
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%endmacro
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%macro ISR_ERRCODE 1
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[global isr%1]
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isr%1:
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cli
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push %1
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jmp isr_common_stub
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%endmacro
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ISR_NOERRCODE 0
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ISR_NOERRCODE 1
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ISR_NOERRCODE 2
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ISR_NOERRCODE 3
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ISR_NOERRCODE 4
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ISR_NOERRCODE 5
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ISR_NOERRCODE 6
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ISR_NOERRCODE 7
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ISR_ERRCODE 8
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ISR_NOERRCODE 9
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ISR_ERRCODE 10
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ISR_ERRCODE 11
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ISR_ERRCODE 12
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ISR_ERRCODE 13
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ISR_ERRCODE 14
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ISR_NOERRCODE 15
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ISR_NOERRCODE 16
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ISR_ERRCODE 17
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ISR_NOERRCODE 18
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ISR_NOERRCODE 19
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ISR_NOERRCODE 20
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ISR_ERRCODE 21
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ISR_NOERRCODE 22
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ISR_NOERRCODE 23
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ISR_NOERRCODE 24
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ISR_NOERRCODE 25
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ISR_NOERRCODE 26
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ISR_NOERRCODE 27
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ISR_NOERRCODE 28
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ISR_NOERRCODE 29
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ISR_NOERRCODE 30
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ISR_NOERRCODE 31
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[extern isr_handler] ; 将会在isr.c中被定义
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; 通用中断处理程序
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isr_common_stub:
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2024-04-14 17:14:26 +08:00
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pusha
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2024-04-09 23:46:56 +08:00
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mov ax, ds
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push eax ; 存储ds
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mov ax, 0x10 ; 将内核数据段赋值给各段
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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2024-04-14 17:14:26 +08:00
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call isr_handler ; call isr_headler(registers_t reg);
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pop eax ; 恢复
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2024-04-09 23:46:56 +08:00
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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2024-04-14 17:14:26 +08:00
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popa
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2024-04-09 23:46:56 +08:00
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add esp, 8 ; 弹出错误码和中断ID
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2024-04-14 17:14:26 +08:00
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iret
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2024-04-09 23:46:56 +08:00
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%macro IRQ 2
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global irq%1
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irq%1:
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cli
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push byte 0
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push %2
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jmp irq_common_stub
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%endmacro
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IRQ 0, 32
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IRQ 1, 33
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IRQ 2, 34
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IRQ 3, 35
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IRQ 4, 36
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IRQ 5, 37
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IRQ 6, 38
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IRQ 7, 39
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IRQ 8, 40
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IRQ 9, 41
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IRQ 10, 42
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IRQ 11, 43
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IRQ 12, 44
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IRQ 13, 45
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IRQ 14, 46
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IRQ 15, 47
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[extern irq_handler]
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; 通用中断处理程序
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irq_common_stub:
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pusha ; 存储所有寄存器
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mov ax, ds
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push eax ; 存储ds
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mov ax, 0x10 ; 将内核数据段赋值给各段
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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call irq_handler ; 调用C语言处理函数
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pop eax ; 恢复各段
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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popa ; 弹出所有寄存器
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add esp, 8 ; 弹出错误码和中断ID
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iret ; 从中断返回
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