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Kernel: Don't read CR registers on every exception

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Bananymous
2026-06-26 01:39:57 +03:00
parent 59ec05c898
commit 2bb9b9b4b3
8 changed files with 94 additions and 33 deletions
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13
kernel/arch/x86_64/interrupts.S
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@@ -44,17 +44,12 @@
isr_stub:
intr_header 24
movq %cr0, %rax; pushq %rax
movq %cr2, %rax; pushq %rax
movq %cr3, %rax; pushq %rax
movq %cr4, %rax; pushq %rax
movq 152(%rsp), %rdi // isr number
movq 160(%rsp), %rsi // error code
leaq 168(%rsp), %rdx // interrupt stack ptr
movq %rsp, %rcx // register ptr
movq 120(%rsp), %rdi // isr number
movq 128(%rsp), %rsi // error code
leaq 136(%rsp), %rdx // interrupt stack ptr
movq %rsp, %rcx // register ptr
call cpp_isr_handler
addq $32, %rsp
intr_footer 24
addq $16, %rsp