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| #!/usr/bin/env python
| # add symbolic names to read_msr / write_msr in trace
| # decode_msr msr-index.h < trace
| import sys
| import re
|
| msrs = dict()
|
| with open(sys.argv[1] if len(sys.argv) > 1 else "msr-index.h", "r") as f:
| for j in f:
| m = re.match(r'#define (MSR_\w+)\s+(0x[0-9a-fA-F]+)', j)
| if m:
| msrs[int(m.group(2), 16)] = m.group(1)
|
| extra_ranges = (
| ( "MSR_LASTBRANCH_%d_FROM_IP", 0x680, 0x69F ),
| ( "MSR_LASTBRANCH_%d_TO_IP", 0x6C0, 0x6DF ),
| ( "LBR_INFO_%d", 0xdc0, 0xddf ),
| )
|
| for j in sys.stdin:
| m = re.search(r'(read|write)_msr:\s+([0-9a-f]+)', j)
| if m:
| r = None
| num = int(m.group(2), 16)
| if num in msrs:
| r = msrs[num]
| else:
| for er in extra_ranges:
| if er[1] <= num <= er[2]:
| r = er[0] % (num - er[1],)
| break
| if r:
| j = j.replace(" " + m.group(2), " " + r + "(" + m.group(2) + ")")
| print j,
|
|
