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    Subject[RFC PATCH v6 07/11] x86/cet/ibt: Add ENDBR to op-code-map
    Date
    Add control transfer terminating instructions:

    ENDBR64/ENDBR32:
    Mark a valid 64/32-bit control transfer endpoint.

    Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
    ---
    arch/x86/lib/x86-opcode-map.txt | 13 +++++++++++--
    tools/objtool/arch/x86/lib/x86-opcode-map.txt | 13 +++++++++++--
    2 files changed, 22 insertions(+), 4 deletions(-)

    diff --git a/arch/x86/lib/x86-opcode-map.txt b/arch/x86/lib/x86-opcode-map.txt
    index c5e825d44766..fbc53481bc59 100644
    --- a/arch/x86/lib/x86-opcode-map.txt
    +++ b/arch/x86/lib/x86-opcode-map.txt
    @@ -620,7 +620,16 @@ ea: SAVEPREVSSP (f3)
    # Skip 0xeb-0xff
    EndTable

    -Table: 3-byte opcode 2 (0x0f 0x38)
    +Table: 3-byte opcode 2 (0x0f 0x1e)
    +Referrer:
    +AVXcode:
    +# Skip 0x00-0xf9
    +fa: ENDBR64 (f3)
    +fb: ENDBR32 (f3)
    +#skip 0xfc-0xff
    +EndTable
    +
    +Table: 3-byte opcode 3 (0x0f 0x38)
    Referrer: 3-byte escape 1
    AVXcode: 2
    # 0x0f 0x38 0x00-0x0f
    @@ -804,7 +813,7 @@ f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSS Pq,Qq
    f7: BEXTR Gy,Ey,By (v) | SHLX Gy,Ey,By (66),(v) | SARX Gy,Ey,By (F3),(v) | SHRX Gy,Ey,By (F2),(v)
    EndTable

    -Table: 3-byte opcode 3 (0x0f 0x3a)
    +Table: 3-byte opcode 4 (0x0f 0x3a)
    Referrer: 3-byte escape 2
    AVXcode: 3
    # 0x0f 0x3a 0x00-0xff
    diff --git a/tools/objtool/arch/x86/lib/x86-opcode-map.txt b/tools/objtool/arch/x86/lib/x86-opcode-map.txt
    index c5e825d44766..fbc53481bc59 100644
    --- a/tools/objtool/arch/x86/lib/x86-opcode-map.txt
    +++ b/tools/objtool/arch/x86/lib/x86-opcode-map.txt
    @@ -620,7 +620,16 @@ ea: SAVEPREVSSP (f3)
    # Skip 0xeb-0xff
    EndTable

    -Table: 3-byte opcode 2 (0x0f 0x38)
    +Table: 3-byte opcode 2 (0x0f 0x1e)
    +Referrer:
    +AVXcode:
    +# Skip 0x00-0xf9
    +fa: ENDBR64 (f3)
    +fb: ENDBR32 (f3)
    +#skip 0xfc-0xff
    +EndTable
    +
    +Table: 3-byte opcode 3 (0x0f 0x38)
    Referrer: 3-byte escape 1
    AVXcode: 2
    # 0x0f 0x38 0x00-0x0f
    @@ -804,7 +813,7 @@ f6: ADCX Gy,Ey (66) | ADOX Gy,Ey (F3) | MULX By,Gy,rDX,Ey (F2),(v) | WRSS Pq,Qq
    f7: BEXTR Gy,Ey,By (v) | SHLX Gy,Ey,By (66),(v) | SARX Gy,Ey,By (F3),(v) | SHRX Gy,Ey,By (F2),(v)
    EndTable

    -Table: 3-byte opcode 3 (0x0f 0x3a)
    +Table: 3-byte opcode 4 (0x0f 0x3a)
    Referrer: 3-byte escape 2
    AVXcode: 3
    # 0x0f 0x3a 0x00-0xff
    --
    2.17.1
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