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