[PATH] AMD MWAITX enablement

[Pawar, Amit]

Thanks Jan and will come back with updated patch.

--Amit

-----Original Message-----
From: Jan Beulich [mailto:JBeulich@suse.com] 
Sent: Tuesday, June 02, 2015 1:52 PM
To: Pawar, Amit
Cc: binutils@sourceware.org
Subject: Re: [PATH] AMD MWAITX enablement

>>> On 02.06.15 at 08:55, <Amit.Pawar@amd.com> wrote:
>--- a/opcodes/i386-opc.tbl
>+++ b/opcodes/i386-opc.tbl
>@@ -5938,3 +5938,16 @@ clzero, 0, 0xf01fc, None, 3, CpuCLZERO, 
>No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|
> 
> // CLZERO instructions end
> 
>+// MONITORX/MWAITX instructions
>+monitorx, 0, 0xf01, 0xfa, 2, CpuMWAITX, 
>+No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt, { 0 } // Need to ensure only "monitorx %eax/%ax,%ecx,%edx" is accepted.
>+monitorx, 3, 0xf01, 0xfa, 2, CpuMWAITX|CpuNo64, 
>+No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt|AddrPrefixOp0, { Reg16|Reg32, Reg32, Reg32 } // Need to ensure only "monitorx %rax/%eax,%rcx,%rdx" is accepted.
>+monitorx, 3, 0xf01, 0xfa, 2, CpuMWAITX|Cpu64,   No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt|AddrPrefixOp0|NoRex64, { Reg32|Reg64, Reg64, Reg64 }
>+
>+mwaitx, 0, 0xf01, 0xfb, 2, CpuMWAITX, 
>+No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt, { 0 } // Need to ensure only "mwaitx %eax,%ecx" is accepted.
>+mwaitx, 2, 0xf01, 0xfb, 2, CpuMWAITX|CpuNo64, 
>+No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt|NoAVX, { Reg32, Reg32 } // Need to ensure only "mwaitx %rax,%rcx" is accepted.
>+mwaitx, 2, 0xf01, 0xfb, 2, CpuMWAITX|Cpu64, 
>+No_bSuf|No_wSuf|No_lSuf|No_sSuf|No_qSuf|No_ldSuf|ImmExt|NoRex64|NoAVX, 
>+{ Reg64, Reg64 } // MONITORX/MWAITX instructions end

Looking at the earlier submitted Linux side patch at least one of the instructions also uses %ebx - why is that not being expressed by the instruction forms taking explicit operands?

Jan