[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH VERY RFC 3/5] tools/fuzz: introduce x86 instruction emulator target
>>> On 08.12.16 at 18:25, <wei.liu2@xxxxxxxxxx> wrote: > On Thu, Dec 08, 2016 at 08:03:04AM -0700, Jan Beulich wrote: > [...] >> >> > +static int emul_read_cr( >> > + unsigned int reg, >> > + unsigned long *val, >> > + struct x86_emulate_ctxt *ctxt) >> > +{ >> > + /* Fake just enough state for the emulator's _get_fpu() to be happy. >> > */ >> > + switch ( reg ) >> > + { >> > + case 0: >> > + *val = 0x00000001; /* PE */ >> > + return X86EMUL_OKAY; >> > + >> > + case 4: >> > + /* OSFXSR, OSXMMEXCPT, and maybe OSXSAVE */ >> > + *val = 0x00000600 | (cpu_has_xsave ? 0x00040000 : 0); >> > + return X86EMUL_OKAY; >> > + } >> > + >> > + return X86EMUL_UNHANDLEABLE; >> > +} >> >> Looks suspiciously similar to existing code. We may want to share >> such stuff, to avoid having to update it in multiple places. > > Share with what? Do you mean the real emulator code? The real emulator test code, yes. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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