AMD SimNow Simulator 4.4.5 - Manual (Page 128)

AMD Confidential
User Manual November 21
st
, 2008
116 Chapter 7: Device Configuration
<Event Device="CPU0" Type="MEMW" ICount="3133971259"
Address="00000000000A88B2" Size="1">
<Data Length="1" Value="01" />
</Event>
Defines a Memory Read or Memory Write event. MEMR and MEMW are recorded for
MMIO ranges.
7.22.2.2 XTR Binary File Contents
XTR Binary file contains the memory image of the system just before the XTR Record
started. The binary file contains multiple records where each record contains has the
following structure:
Physical Address Of the Page: 8 bytes
Count of Bytes in this Page: 4 Bytes
Data Of the Page: Count of Bytes earlier
Currently XTR only supports page size of 4096 bytes. Both the DIMM and MMIO may
be present in the XTR Binary file. The last record in the binary file must have a count of
zero to indicate end of memory image.
7.22.3 ModeFlags
ModeFlags defines some of the states of the CPU that are important for execution. The
upper 32 bits store the Execution Control flags e.g. HLT and <ignore interrupts for 1
instruction when we change stack segment>. The lower 32 bits is redundant from other
initialization values in the XTR initialization but is there to maintain code consistency.
Table 7-7 shows the Execution Control Flags (upper 32 bit):
Execution Control Flag Value Description
BIUI_LOCK 0x00000001 Bus is locked
BIUI_RESET 0x00000002 Processor RESET pin.
BIUI_INIT 0x00000004 INIT pin
BIUI_INTR 0x00000008 Interrupt
BIUI_NMI 0x00000010 NMI
BIUI_SMI 0x00000020 SMI
BIUI_IGNNE 0x00000040 Floating point IGNNE
BIUI_A20M 0x00000080 A20Mask
BIUI_PAUSE 0x00000100 PAUSE
BIUI_HOLD 0x00000200 HOLD
BIUI_UNUSED 0x00000400 Unused
BIUI_STOP 0x00000800 Pseudo pin that stops simulation
Table 7-7: Execution Control Flags
Table 7-8 shows other internal execution control flags. Some flags may be AweSim
specific.
Execution Control Flag Value Description
ECF_SMCRESTART 0x00001000 SMC detected in current translation (restart required).
ECF_GENEXCEPTION 0x00002000 SVM virtual interrupt pending
ECF_VINTR 0x00004000 INIT pin