195 lines
2.1 KiB
ArmAsm
195 lines
2.1 KiB
ArmAsm
.macro pushaq
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pushq %rax
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pushq %rbx
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pushq %rcx
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pushq %rdx
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pushq %rbp
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pushq %rdi
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pushq %rsi
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pushq %r8
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pushq %r9
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pushq %r10
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pushq %r11
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pushq %r12
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pushq %r13
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pushq %r14
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pushq %r15
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.endm
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.macro popaq
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %r11
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popq %r10
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popq %r9
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popq %r8
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popq %rsi
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popq %rdi
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popq %rbp
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popq %rdx
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popq %rcx
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popq %rbx
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popq %rax
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.endm
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.macro popaq_no_rax
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %r11
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popq %r10
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popq %r9
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popq %r8
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popq %rsi
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popq %rdi
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popq %rbp
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popq %rdx
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popq %rcx
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popq %rbx
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.endm
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isr_stub:
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pushaq
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movq %cr0, %rax; pushq %rax
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movq %cr2, %rax; pushq %rax
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movq %cr3, %rax; pushq %rax
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movq %cr4, %rax; pushq %rax
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movq 184(%rsp), %rax; pushq %rax
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movq 176(%rsp), %rax; pushq %rax
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movq 208(%rsp), %rax; pushq %rax
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movq 176(%rsp), %rdi
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movq 184(%rsp), %rsi
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movq %rsp, %rdx
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addq $192, %rdx
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movq %rsp, %rcx
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call cpp_isr_handler
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addq $56, %rsp
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popaq
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addq $16, %rsp
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iretq
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irq_stub:
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pushaq
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movq 0x78(%rsp), %rdi # irq number
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movq %rsp, %rsi
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addq $136, %rsi
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call cpp_irq_handler
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popaq
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addq $16, %rsp
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iretq
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.macro isr n
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.global isr\n
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isr\n:
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pushq $0
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pushq $\n
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jmp isr_stub
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.endm
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.macro isr_err n
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.global isr\n
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isr\n:
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pushq $\n
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jmp isr_stub
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.endm
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.macro irq n
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.global irq\n
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irq\n:
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pushq $0
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pushq $\n
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jmp irq_stub
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.endm
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isr 0
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isr 1
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isr 2
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isr 3
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isr 4
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isr 5
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isr 6
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isr 7
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isr_err 8
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isr 9
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isr_err 10
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isr_err 11
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isr_err 12
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isr_err 13
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isr_err 14
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isr 15
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isr 16
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isr_err 17
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isr 18
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isr 19
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isr 20
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isr 21
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isr 22
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isr 23
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isr 24
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isr 25
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isr 26
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isr 27
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isr 28
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isr 29
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isr 30
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isr 31
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irq 0
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irq 1
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irq 2
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irq 3
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irq 4
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irq 5
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irq 6
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irq 7
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irq 8
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irq 9
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irq 10
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irq 11
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irq 12
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irq 13
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irq 14
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irq 15
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irq 16
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irq 17
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irq 18
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irq 19
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irq 20
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irq 21
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irq 22
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irq 23
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irq 24
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irq 25
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irq 26
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irq 27
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irq 28
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irq 29
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irq 30
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irq 31
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// arguments in RAX, RBX, RCX, RDX, RSI, RDI
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// System V ABI: RDI, RSI, RDX, RCX, R8, R9
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.global syscall_asm
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syscall_asm:
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pushaq
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movq %rsi, %r8
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movq %rdi, %r9
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movq %rax, %rdi
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movq %rbx, %rsi
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xchgq %rcx, %rdx
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movq %rsp, %rbx
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addq $120, %rbx
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pushq %rbx
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call cpp_syscall_handler
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addq $8, %rsp
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popaq_no_rax
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addq $8, %rsp
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iretq |