68 lines
839 B
ArmAsm
68 lines
839 B
ArmAsm
.code32
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.section .text
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.global disable_interrupts
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disable_interrupts:
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cli
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ret
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.global enable_interrupts
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enable_interrupts:
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sti
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ret
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.global io_wait
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io_wait:
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outb %al, $0x80
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ret
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.global liftoff
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liftoff:
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cli
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mov 4(%esp), %ecx
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mov 8(%esp), %ebx
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mov $0x23, %ax
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mov %ax, %ds
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mov %ax, %es
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mov %ax, %fs
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mov %ax, %gs
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push $0x23
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push %ebx
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push $0x202
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push $0x1B
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push %ecx
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xor %eax, %eax
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xor %edx, %edx
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iret
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.global outb
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outb:
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push %ebp
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mov %esp, %ebp
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# 8(%ebp) port
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# 12(%ebp) data
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mov 8(%ebp), %edx
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mov 12(%ebp), %eax
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outb %al, %dx
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leave
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ret
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.global inb
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inb:
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push %ebp
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mov %esp, %ebp
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# 8(%ebp) port
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mov 8(%ebp), %edx
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xor %eax, %eax
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inb %dx, %al
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leave
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ret |