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some code cleanups

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This commit is contained in:
Stefan Lankes 2015-07-12 10:38:40 +02:00
parent 8147a9b3bf
commit 49cc6ade16
1 changed files with 8 additions and 9 deletions
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17
hermit/arch/x86/kernel/entry.asm
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@ -543,14 +543,14 @@ isrsyscall:
call get_kernel_stack
; restore registers
mov rsi, [rsp+0]
mov rdi, [rsp+8]
mov rbx, [rsp+16]
mov rcx, [rsp+24]
mov rdx, [rsp+32]
mov rbp, [rsp+40]
mov r10, [rsp+48]
mov r11, [rsp+56]
mov r10, [rsp+48]
mov rbp, [rsp+40]
mov rdx, [rsp+32]
mov rcx, [rsp+24]
mov rbx, [rsp+16]
mov rdi, [rsp+8]
mov rsi, [rsp+0]
xchg rsp, rax ; => rax contains pointer to the kernel stack
@ -558,8 +558,7 @@ isrsyscall:
sti
; syscall stores in rcx the return address
; => r10 for the temporary storage of the 4th
; argument
; => r10 for the temporary storage of the 4th argument
; => exchange the value to get the correct order
xchg rcx, r10