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SubjectRe: instruction decoder warnings: Warning: objdump says 5 bytes, but insn_get_length() says 3
(2011/11/10 18:30), Ingo Molnar wrote:
>
> FYI, latest -tip (x86, 64-bit, allyesconfig) produces these warnings:

Thanks for the report!
It seems that I need to update AVX support of instruction decoder.

> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b709: c5 f9 73 de 04 vpsrldq
> $0x4,%xmm6,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b72b: c5 b1 73 fd 0c vpslldq
> $0xc,%xmm5,%xmm9
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b730: c5 f9 72 f5 01 vpslld
> $0x1,%xmm5,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b752: c5 d1 72 d5 1f vpsrld
> $0x1f,%xmm5,%xmm5
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b75b: c4 c1 51 72 f1 02 vpslld
> $0x2,%xmm9,%xmm5
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b761: c4 c1 31 72 d1 1e vpsrld
> $0x1e,%xmm9,%xmm9
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b7ae: c5 f9 73 dd 04 vpsrldq
> $0x4,%xmm5,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b7d1: c5 b1 73 fc 0c vpslldq
> $0xc,%xmm4,%xmm9
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b7d6: c5 f9 72 f4 01 vpslld
> $0x1,%xmm4,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b7f8: c5 d9 72 d4 1f vpsrld
> $0x1f,%xmm4,%xmm4
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b801: c4 c1 59 72 f1 02 vpslld
> $0x2,%xmm9,%xmm4
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b807: c4 c1 31 72 d1 1e vpsrld
> $0x1e,%xmm9,%xmm9
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b856: c5 f9 73 dc 04 vpsrldq
> $0x4,%xmm4,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b878: c5 b1 73 fb 0c vpslldq
> $0xc,%xmm3,%xmm9
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b87d: c5 f9 72 f3 01 vpslld
> $0x1,%xmm3,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b89f: c5 e1 72 d3 1f vpsrld
> $0x1f,%xmm3,%xmm3
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b8a8: c4 c1 61 72 f1 02 vpslld
> $0x2,%xmm9,%xmm3
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b8ae: c4 c1 31 72 d1 1e vpsrld
> $0x1e,%xmm9,%xmm9
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b8fd: c5 f9 73 db 04 vpsrldq
> $0x4,%xmm3,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b91f: c5 b1 73 fa 0c vpslldq
> $0xc,%xmm2,%xmm9
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b924: c5 f9 72 f2 01 vpslld
> $0x1,%xmm2,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b946: c5 e9 72 d2 1f vpsrld
> $0x1f,%xmm2,%xmm2
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b94f: c4 c1 69 72 f1 02 vpslld
> $0x2,%xmm9,%xmm2
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b955: c4 c1 31 72 d1 1e vpsrld
> $0x1e,%xmm9,%xmm9
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b9de: c5 f9 72 f1 02 vpslld
> $0x2,%xmm1,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108b9e3: c5 f1 72 d1 1e vpsrld
> $0x1e,%xmm1,%xmm1
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108ba5f: c4 c1 79 72 f0 02 vpslld
> $0x2,%xmm8,%xmm0
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108ba65: c4 c1 39 72 d0 1e vpsrld
> $0x1e,%xmm8,%xmm8
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bae2: c5 f9 72 f7 02 vpslld
> $0x2,%xmm7,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bae7: c5 c1 72 d7 1e vpsrld
> $0x1e,%xmm7,%xmm7
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bb62: c5 f9 72 f6 02 vpslld
> $0x2,%xmm6,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bb67: c5 c9 72 d6 1e vpsrld
> $0x1e,%xmm6,%xmm6
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bbe1: c5 f9 72 f5 02 vpslld
> $0x2,%xmm5,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bbe6: c5 d1 72 d5 1e vpsrld
> $0x1e,%xmm5,%xmm5
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bc61: c5 f9 72 f4 02 vpslld
> $0x2,%xmm4,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bc66: c5 d9 72 d4 1e vpsrld
> $0x1e,%xmm4,%xmm4
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bcf3: c5 f9 72 f3 02 vpslld
> $0x2,%xmm3,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bcf8: c5 e1 72 d3 1e vpsrld
> $0x1e,%xmm3,%xmm3
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bd8b: c5 f9 72 f2 02 vpslld
> $0x2,%xmm2,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bd90: c5 e9 72 d2 1e vpsrld
> $0x1e,%xmm2,%xmm2
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108be23: c5 f9 72 f1 02 vpslld
> $0x2,%xmm1,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108be28: c5 f1 72 d1 1e vpsrld
> $0x1e,%xmm1,%xmm1
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108beba: c4 c1 79 72 f0 02 vpslld
> $0x2,%xmm8,%xmm0
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bec0: c4 c1 39 72 d0 1e vpsrld
> $0x1e,%xmm8,%xmm8
> Warning: objdump says 6 bytes, but insn_get_length() says 4
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bf55: c5 f9 72 f7 02 vpslld
> $0x2,%xmm7,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bf5a: c5 c1 72 d7 1e vpsrld
> $0x1e,%xmm7,%xmm7
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bfe6: c5 f9 72 f6 02 vpslld
> $0x2,%xmm6,%xmm0
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: arch/x86/tools/test_get_len found difference at
> <sha1_transform_avx>:ffffffff8108b660
>
> Warning: ffffffff8108bfeb: c5 c9 72 d6 1e vpsrld
> $0x1e,%xmm6,%xmm6
> Warning: objdump says 5 bytes, but insn_get_length() says 3
> Warning: decoded and checked 9508702 instructions with 48 warnings
>
> Thanks,
>
> Ingo


--
Masami HIRAMATSU
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com


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