1. 06 10月, 2015 1 次提交
  2. 04 9月, 2015 1 次提交
    • A
      perf tools: Add a test for decoding of new x86 instructions · 98e4619f
      Adrian Hunter 提交于
      Add a new test titled:
      
      	Test x86 instruction decoder - new instructions
      
      The purpose of this test is to check the instruction decoder after new
      instructions have been added.  Initially, MPX instructions are tested
      which are already supported, but the definitions in x86-opcode-map.txt
      will be tweaked in a subsequent patch, after which this test can be run
      to verify those changes.
      
      The data for the test comes from assembly language instructions in
      insn-x86-dat-src.c which is converted into bytes by the scripts
      gen-insn-x86-dat.sh and gen-insn-x86-dat.awk, and included into the test
      program insn-x86.c as insn-x86-dat-32.c and insn-x86-dat-64.c.
      
      The conversion is not done as part of the perf tools build because the
      test data must be under (git) change control in order for the test to be
      repeatably-correct.  Also it may require a recent version of binutils.
      
      Commiter notes:
      
      Using it:
      
        # perf test decoder
        39: Test x86 instruction decoder - new instructions          : Ok
        # perf test -v decoder
        39: Test x86 instruction decoder - new instructions          :
        --- start ---
        test child forked, pid 21970
        Decoded ok: 0f 31                	rdtsc
        Decoded ok: f3 0f 1b 00          	bndmk  (%eax),%bnd0
        Decoded ok: f3 0f 1b 05 78 56 34 12 	bndmk  0x12345678,%bnd0
        Decoded ok: f3 0f 1b 18          	bndmk  (%eax),%bnd3
        <SNIP>
        Decoded ok: f2 e9 00 00 00 00    	bnd jmpq 402 <main+0x402>
        Decoded ok: f2 e9 00 00 00 00    	bnd jmpq 408 <main+0x408>
        Decoded ok: 67 f2 ff 21          	bnd jmpq *(%ecx)
        Decoded ok: f2 0f 85 00 00 00 00 	bnd jne 413 <main+0x413>
        test child finished with 0
        ---- end ----
        Test x86 instruction decoder - new instructions: Ok
        #
      Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
      Acked-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: Andy Lutomirski <luto@amacapital.net>
      Cc: Dave Hansen <dave.hansen@linux.intel.com>
      Cc: Denys Vlasenko <dvlasenk@redhat.com>
      Cc: Jiri Olsa <jolsa@redhat.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Qiaowei Ren <qiaowei.ren@intel.com>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Link: http://lkml.kernel.org/r/1441196131-20632-3-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      98e4619f