2023-02-08 20:24:40 +00:00
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.section .text
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.align 4
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.macro ISR_ERROR index
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.global _isr\index
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.type _isr\index, @function
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_isr\index:
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cli
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pushq $\index
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jmp isr_common_stub
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.endm
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.macro ISR_NO_ERROR index
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.global _isr\index
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.type _isr\index, @function
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_isr\index:
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cli
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pushq $0
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pushq $\index
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jmp isr_common_stub
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.endm
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.macro IRQ id byte
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.global _irq\id
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.type _irq\id, @function
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_irq\id:
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cli
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pushq $\id
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pushq $\byte
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jmp irq_common_stub
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.endm
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.macro PUSH_REGS
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push %rax
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push %rcx
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push %rdx
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push %rbx
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pushq $0
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push %rbp
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push %rsi
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push %rdi
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push %r8
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push %r9
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push %r10
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push %r11
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push %r12
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push %r13
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push %r14
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push %r15
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.endm
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.macro POP_REGS
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pop %r15
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pop %r14
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pop %r13
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pop %r12
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pop %r11
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pop %r10
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pop %r9
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pop %r8
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pop %rdi
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pop %rsi
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pop %rbp
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add $8, %rsp
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pop %rbx
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pop %rdx
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pop %rcx
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pop %rax
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.endm
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ISR_NO_ERROR 0
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ISR_NO_ERROR 1
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ISR_NO_ERROR 2
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ISR_NO_ERROR 3
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ISR_NO_ERROR 4
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ISR_NO_ERROR 5
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ISR_NO_ERROR 6
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ISR_NO_ERROR 7
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ISR_ERROR 8
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ISR_NO_ERROR 9
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ISR_ERROR 10
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ISR_ERROR 11
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ISR_ERROR 12
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ISR_ERROR 13
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ISR_ERROR 14
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ISR_NO_ERROR 15
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ISR_NO_ERROR 16
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ISR_NO_ERROR 17
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ISR_NO_ERROR 18
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ISR_NO_ERROR 19
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ISR_NO_ERROR 20
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ISR_NO_ERROR 21
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ISR_NO_ERROR 22
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ISR_NO_ERROR 23
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ISR_NO_ERROR 24
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ISR_NO_ERROR 25
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ISR_NO_ERROR 26
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ISR_NO_ERROR 27
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ISR_NO_ERROR 28
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ISR_NO_ERROR 29
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ISR_NO_ERROR 30
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ISR_NO_ERROR 31
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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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2023-05-07 21:43:04 +01:00
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IRQ 16, 48
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IRQ 17, 49
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IRQ 18, 50
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IRQ 19, 51
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IRQ 20, 52
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IRQ 21, 53
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IRQ 22, 54
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IRQ 23, 55
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IRQ 24, 56
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IRQ 25, 57
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IRQ 26, 58
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IRQ 27, 59
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IRQ 28, 60
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IRQ 29, 61
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IRQ 30, 62
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IRQ 31, 63
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IRQ 32, 64
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IRQ 33, 65
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IRQ 34, 66
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IRQ 35, 67
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IRQ 36, 68
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IRQ 37, 69
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IRQ 38, 70
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IRQ 39, 71
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IRQ 40, 72
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IRQ 41, 73
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IRQ 42, 74
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IRQ 43, 75
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IRQ 44, 76
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IRQ 45, 77
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IRQ 46, 78
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IRQ 47, 79
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IRQ 48, 80
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IRQ 49, 81
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IRQ 50, 82
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IRQ 51, 83
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IRQ 52, 84
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IRQ 53, 85
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IRQ 54, 86
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IRQ 55, 87
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IRQ 56, 88
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IRQ 57, 89
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IRQ 58, 90
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IRQ 59, 91
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IRQ 60, 92
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IRQ 61, 93
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IRQ 62, 94
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IRQ 63, 95
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IRQ 64, 96
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IRQ 65, 97
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IRQ 66, 98
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IRQ 67, 99
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IRQ 68, 100
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IRQ 69, 101
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IRQ 70, 102
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IRQ 71, 103
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IRQ 72, 104
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IRQ 73, 105
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IRQ 74, 106
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IRQ 75, 107
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IRQ 76, 108
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IRQ 77, 109
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IRQ 78, 110
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IRQ 79, 111
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IRQ 80, 112
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IRQ 81, 113
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IRQ 82, 114
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IRQ 83, 115
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IRQ 84, 116
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IRQ 85, 117
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IRQ 86, 118
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IRQ 87, 119
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IRQ 88, 120
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IRQ 89, 121
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IRQ 90, 122
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IRQ 91, 123
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IRQ 92, 124
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IRQ 93, 125
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IRQ 94, 126
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IRQ 95, 127
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IRQ 96, 128
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IRQ 97, 129
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IRQ 98, 130
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IRQ 99, 131
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IRQ 100, 132
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IRQ 101, 133
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IRQ 102, 134
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IRQ 103, 135
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IRQ 104, 136
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IRQ 105, 137
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IRQ 106, 138
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IRQ 107, 139
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IRQ 108, 140
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IRQ 109, 141
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IRQ 110, 142
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IRQ 111, 143
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IRQ 112, 144
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IRQ 113, 145
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IRQ 114, 146
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IRQ 115, 147
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IRQ 116, 148
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IRQ 117, 149
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IRQ 118, 150
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IRQ 119, 151
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IRQ 120, 152
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IRQ 121, 153
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IRQ 122, 154
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IRQ 123, 155
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IRQ 124, 156
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IRQ 125, 157
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IRQ 126, 158
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IRQ 127, 159
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IRQ 128, 160
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IRQ 129, 161
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IRQ 130, 162
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IRQ 131, 163
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IRQ 132, 164
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IRQ 133, 165
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IRQ 134, 166
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IRQ 135, 167
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IRQ 136, 168
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IRQ 137, 169
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IRQ 138, 170
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IRQ 139, 171
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IRQ 140, 172
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IRQ 141, 173
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IRQ 142, 174
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IRQ 143, 175
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IRQ 144, 176
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IRQ 145, 177
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IRQ 146, 178
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IRQ 147, 179
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IRQ 148, 180
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IRQ 149, 181
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IRQ 150, 182
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IRQ 151, 183
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IRQ 152, 184
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IRQ 153, 185
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IRQ 154, 186
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IRQ 155, 187
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IRQ 156, 188
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IRQ 157, 189
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IRQ 158, 190
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IRQ 159, 191
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IRQ 160, 192
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IRQ 161, 193
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IRQ 162, 194
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IRQ 163, 195
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IRQ 164, 196
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IRQ 165, 197
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IRQ 166, 198
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IRQ 167, 199
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IRQ 168, 200
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IRQ 169, 201
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IRQ 170, 202
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IRQ 171, 203
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IRQ 172, 204
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IRQ 173, 205
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IRQ 174, 206
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IRQ 175, 207
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IRQ 176, 208
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IRQ 177, 209
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IRQ 178, 210
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IRQ 179, 211
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IRQ 180, 212
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IRQ 181, 213
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IRQ 182, 214
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IRQ 183, 215
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IRQ 184, 216
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IRQ 185, 217
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IRQ 186, 218
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IRQ 187, 219
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IRQ 188, 220
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IRQ 189, 221
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IRQ 190, 222
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IRQ 191, 223
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IRQ 192, 224
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IRQ 193, 225
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IRQ 194, 226
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IRQ 195, 227
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IRQ 196, 228
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IRQ 197, 229
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IRQ 198, 230
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IRQ 199, 231
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IRQ 200, 232
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IRQ 201, 233
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IRQ 202, 234
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IRQ 203, 235
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IRQ 204, 236
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IRQ 205, 237
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IRQ 206, 238
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IRQ 207, 239
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IRQ 208, 240
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IRQ 209, 241
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IRQ 210, 242
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IRQ 211, 243
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IRQ 212, 244
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IRQ 213, 245
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IRQ 214, 246
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IRQ 215, 247
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IRQ 216, 248
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IRQ 217, 249
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IRQ 218, 250
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IRQ 219, 251
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IRQ 220, 252
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IRQ 221, 253
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IRQ 222, 254
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IRQ 223, 255
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2023-02-08 20:24:40 +00:00
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.global isr_common_stub
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.type isr_common_stub, @function
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isr_common_stub:
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PUSH_REGS
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mov %rsp, %rdi
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call isr_dispatch
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POP_REGS
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add $16, %rsp
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iretq
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.global irq_common_stub
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.type irq_common_stub, @function
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irq_common_stub:
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PUSH_REGS
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mov %rsp, %rdi
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call irq_dispatch
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POP_REGS
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add $16, %rsp
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iretq
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.global syscall_gate
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.type syscall_gate, @function
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.extern syscall_dispatch
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.type syscall_dispatch, @function
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syscall_gate:
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swapgs
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movq %rsp, %gs:20 # GS+20 = rsp2 in the current TSS block (user stack storage)
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movq %gs:4, %rsp # GS+4 = rsp0 in the current TSS block (per-thread kstack)
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# start building a pf_cpu_context
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pushq $0x1b
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pushq %gs:20
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push %r11
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push $0x23
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push %rcx
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pushq $0
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pushq $0x80
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PUSH_REGS
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mov %rsp, %rdi
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# switch back to user gs while in syscall_dispatch. Interrupts are enabled in syscall_dispatch,
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# and if the task gets pre-empted, the incoming task will expect %gs to have its usermode value.
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swapgs
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call syscall_dispatch
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POP_REGS
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add $16, %rsp
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pop %rcx
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add $8, %rsp
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pop %r11
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add $16, %rsp
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swapgs
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movq %gs:20, %rsp # GS+20 = rsp2 in the current TSS block
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swapgs
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# back to usermode
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sysretq
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.global pf_faultptr
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.type pf_faultptr, @function
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pf_faultptr:
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mov %cr2, %rax
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ret
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