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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/testing/selftests/kvm/lib/x86/handlers.S
51074 views
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handle_exception:

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	push %r15

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	push %r14

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	push %r13

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	push %r12

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	push %r11

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	push %r10

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	push %r9

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	push %r8

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	push %rdi

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	push %rsi

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	push %rbp

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	push %rbx

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	push %rdx

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	push %rcx

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	push %rax

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	mov %rsp, %rdi

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	call route_exception

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	pop %rax

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	pop %rcx

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	pop %rdx

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	pop %rbx

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	pop %rbp

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	pop %rsi

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	pop %rdi

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	pop %r8

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	pop %r9

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	pop %r10

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	pop %r11

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	pop %r12

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	pop %r13

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	pop %r14

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	pop %r15

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	/* Discard vector and error code. */

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	add $16, %rsp

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	iretq

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/*

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 * Build the handle_exception wrappers which push the vector/error code on the

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 * stack and an array of pointers to those wrappers.

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 */

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.pushsection .rodata

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.globl idt_handlers

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idt_handlers:

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.popsection

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.macro HANDLERS has_error from to

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	vector = \from

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	.rept \to - \from + 1

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	.align 8

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	/* Fetch current address and append it to idt_handlers. */

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666 :

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.pushsection .rodata

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	.quad 666b

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.popsection

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	.if ! \has_error

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	pushq $0

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	.endif

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	pushq $vector

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	jmp handle_exception

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	vector = vector + 1

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	.endr

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.endm

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.global idt_handler_code

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idt_handler_code:

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	HANDLERS has_error=0 from=0  to=7

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	HANDLERS has_error=1 from=8  to=8

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	HANDLERS has_error=0 from=9  to=9

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	HANDLERS has_error=1 from=10 to=14

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	HANDLERS has_error=0 from=15 to=16

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	HANDLERS has_error=1 from=17 to=17

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	HANDLERS has_error=0 from=18 to=255

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.section        .note.GNU-stack, "", %progbits

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