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