handle_exception:
|
push %r15
|
push %r14
|
push %r13
|
push %r12
|
push %r11
|
push %r10
|
push %r9
|
push %r8
|
|
push %rdi
|
push %rsi
|
push %rbp
|
push %rbx
|
push %rdx
|
push %rcx
|
push %rax
|
mov %rsp, %rdi
|
|
call route_exception
|
|
pop %rax
|
pop %rcx
|
pop %rdx
|
pop %rbx
|
pop %rbp
|
pop %rsi
|
pop %rdi
|
pop %r8
|
pop %r9
|
pop %r10
|
pop %r11
|
pop %r12
|
pop %r13
|
pop %r14
|
pop %r15
|
|
/* Discard vector and error code. */
|
add $16, %rsp
|
iretq
|
|
/*
|
* Build the handle_exception wrappers which push the vector/error code on the
|
* stack and an array of pointers to those wrappers.
|
*/
|
.pushsection .rodata
|
.globl idt_handlers
|
idt_handlers:
|
.popsection
|
|
.macro HANDLERS has_error from to
|
vector = \from
|
.rept \to - \from + 1
|
.align 8
|
|
/* Fetch current address and append it to idt_handlers. */
|
current_handler = .
|
.pushsection .rodata
|
.quad current_handler
|
.popsection
|
|
.if ! \has_error
|
pushq $0
|
.endif
|
pushq $vector
|
jmp handle_exception
|
vector = vector + 1
|
.endr
|
.endm
|
|
.global idt_handler_code
|
idt_handler_code:
|
HANDLERS has_error=0 from=0 to=7
|
HANDLERS has_error=1 from=8 to=8
|
HANDLERS has_error=0 from=9 to=9
|
HANDLERS has_error=1 from=10 to=14
|
HANDLERS has_error=0 from=15 to=16
|
HANDLERS has_error=1 from=17 to=17
|
HANDLERS has_error=0 from=18 to=255
|
|
.section .note.GNU-stack, "", %progbits
|
