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Add read_rflags()

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This commit is contained in:
Josh Holtrop 2023-11-25 13:02:27 -05:00
parent 35e5aa2ee5
commit d100ab53a8
1 changed files with 8 additions and 0 deletions
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8
src/hulk/cpu.d
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@ -216,6 +216,14 @@ void write_cr4(ulong v)
__asm("mov $0, %cr4", "r", v); __asm("mov $0, %cr4", "r", v);
} }
ulong read_rflags()
{
return __asm!ulong(`
pushf
mov (%rsp), %rax
add $$8, %rsp`, "={rax}");
}
ulong rdmsr(uint msr) ulong rdmsr(uint msr)
{ {
return __asm!ulong(` return __asm!ulong(`