Intel IA-32 사용자 설명서

14-10 Vol. 3A

When a machine-check error is detected on a Pentium 4 or Intel Xeon processor, the processor
saves the state of the general-purpose registers, the R/EFLAGS register, and the R/EIP in these
extended machine-check state MSRs. This information can be used by a debugger to analyze the
error.

These registers are read/write to zero registers. This means software can read them; but if soft-
ware writes to them, only all zeros is allowed. If software attempts to write a non-zero value into
one of these registers, a general-protection (#GP) exception is generated. These registers are
cleared on a hardware reset (power-up or RESET), but maintain their contents following a soft
reset (INIT reset).

IA32_MCG_RBP

186H

Contains state of the RBP register at the time of the machine-check 
error.

IA32_MCG_RSP

187H

Contains state of the RSP register at the time of the machine-check 
error.

IA32_MCG_RFLAGS

188H

Contains state of the RFLAGS register at the time of the machine-
check error.

IA32_MCG_RIP

189H

Contains state of the RIP register at the time of the machine-check 
error.

IA32_MCG_MISC

18AH

When set, indicates that a page assist or page fault occurred during 
DS normal operation.

IA32_MCG_
RSERVED[1:5]

18BH-
18FH

These registers, if present, are reserved.

IA32_MCG_R8

190H

Contains state of the R8 register at the time of the machine-check 
error.

IA32_MCG_R9

191H

Contains state of the R9 register at the time of the machine-check 
error.

IA32_MCG_R10

192H

Contains state of the R10 register at the time of the machine-check 
error.

IA32_MCG_R11

193H

Contains state of the R11 register at the time of the machine-check 
error.

IA32_MCG_R12

194H

Contains state of the R12 register at the time of the machine-check 
error.

IA32_MCG_R13

194H

Contains state of the R8 register at the time of the machine-check 
error.

IA32_MCG_R14

196H

Contains state of the R14 register at the time of the machine-check 
error.

IA32_MCG_R15

197H

Contains state of the R15 register at the time of the machine-check 
error.