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Vol. 3 16-25
DEBUGGING, PROFILING BRANCHES AND TIME-STAMP COUNTER
16.4.9.1 DS Save Area and IA-32e Mode Operation
When IA-32e mode is active (IA32_EFER.LMA = 1), the structure of the DS save area
is shown in Figure 16-8. The organization of each field in IA-32e mode operation is
similar to that of non-IA-32e mode operation. However, each field now stores a
64-bit address. The IA32_DS_AREA MSR holds the 64-bit linear address of the first
byte of the DS buffer management area.
Figure 16-7. PEBS Record Format
EFLAGS
0H
4H
8H
0
31
Linear IP
10H
18H
14H
1CH
20H
24H
CH
EAX
EBX
ECX
EDX
ESI
EDI
EBP
ESP