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define generic MSR

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This commit is contained in:
Stanislav Shwartsman 2008-12-05 13:10:51 +00:00
parent 70e9f4c161
commit b3bbf8ded2
1 changed files with 23 additions and 1 deletions
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24
bochs/cpu/crregs.h
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: crregs.h,v 1.10 2008-04-16 16:44:04 sshwarts Exp $
// $Id: crregs.h,v 1.11 2008-12-05 13:10:51 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2007 Stanislav Shwartsman
@ -148,4 +148,26 @@ struct xcr0_t {
#undef IMPLEMENT_CRREG_ACCESSORS
typedef struct msr {
Bit32u index; // MSR index
Bit64u val64; // current MSR value
Bit64u reset_value; // reset value
Bit64u write_mask; // r/o bits mask
Bit64u hardwired_bits; // hardwired bits mask
msr(unsigned idx, Bit64u reset_val = 0, Bit64u wmask = 0, Bit64u hmask = 0):
index(idx), val64(reset_val), reset_value(reset_val),
write_mask(wmask), hardwired_bits(hmask) {}
BX_CPP_INLINE void reset() { val64 = reset_value; }
BX_CPP_INLINE Bit64u getRegister() { return val64; }
BX_CPP_INLINE bx_bool setRegister(Bit64u new_val) {
new_val = (new_val & ~hardwired_bits) | (val64 & hardwired_bits);
if ((val64 ^ new_val) & write_mask) return 0;
val64 = new_val;
return 1;
}
} MSR;
#endif