func Wrmsr(u models.Usercorn, msr, value uint64) {
wrmsr := []byte{0x0F, 0x30}
u.RunShellcode(
0, wrmsr,
map[int]uint64{
uc.X86_REG_RAX: value & 0xFFFFFFFF,
uc.X86_REG_RDX: value >> 32 & 0xFFFFFFFF,
uc.X86_REG_RCX: msr & 0xFFFFFFFF,
}, nil,
)
}
func Rdmsr(u models.Usercorn, msr uint64) uint64 {
rcx, _ := u.RegRead(uc.X86_REG_RCX)
rdx, _ := u.RegRead(uc.X86_REG_RDX)
rdmsr := []byte{0x0F, 0x30}
regs := map[int]uint64{uc.X86_REG_RAX: msr}
u.RunShellcode(0, rdmsr, regs, nil)
ecx, _ := u.RegRead(uc.X86_REG_ECX)
edx, _ := u.RegRead(uc.X86_REG_EDX)
u.RegWrite(uc.X86_REG_RCX, rcx)
u.RegWrite(uc.X86_REG_RDX, rdx)
return (edx << 32) | (ecx & 0xFFFFFFFF)
}