linux/tools/testing/selftests/kvm/lib/x86/handlers.S
Sean Christopherson 67730e6c53 KVM: selftests: Use canonical $(ARCH) paths for KVM selftests directories
Use the kernel's canonical $(ARCH) paths instead of the raw target triple
for KVM selftests directories.  KVM selftests are quite nearly the only
place in the entire kernel that using the target triple for directories,
tools/testing/selftests/drivers/s390x being the lone holdout.

Using the kernel's preferred nomenclature eliminates the minor, but
annoying, friction of having to translate to KVM's selftests directories,
e.g. for pattern matching, opening files, running selftests, etc.

Opportunsitically delete file comments that reference the full path of the
file, as they are obviously prone to becoming stale, and serve no known
purpose.

Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Acked-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20241128005547.4077116-16-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
2024-12-18 14:15:04 -08:00

81 lines
1.3 KiB
ArmAsm

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. */
666 :
.pushsection .rodata
.quad 666b
.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