[PATCH] Add LWP support for upcoming AMD Orochi processor

[H.J. Lu]

On Thu, Nov 5, 2009 at 2:18 PM, Sebastian Pop <sebpop@gmail.com> wrote:
> Hi,
>
> The attached patch adds support for the LWP instructions,
> see http://support.amd.com/us/Processor_TechDocs/43724.pdf
> that will be part of the upcoming AMD Orochi processor.
>
> 2009-11-05  Sebastian Pop  <sebastian.pop@amd.com>
>            Quentin Neill  <quentin.neill@amd.com>
>
>        * gas/config/tc-i386.c (cpu_arch): Add CPU_LWP_FLAGS.
>        (build_vex_prefix): Handle xop09 and xop0a.
>        (build_modrm_byte): Handle vexlwp.
>        (md_show_usage): Add lwp.
>
>        * gas/testsuite/gas/i386/i386.exp: Run x86-64-lwp.
>        * gas/testsuite/gas/i386/x86-64-lwp.d: New.
>        * gas/testsuite/gas/i386/x86-64-lwp.s: New.
>
>        * opcodes/i386-dis.c (OP_LWPCB_E): New.
>        (OP_LWP_E): New.
>        (OP_LWP_I): New.
>        (USE_XOP_8F_TABLE): New.
>        (XOP_8F_TABLE): New.
>        (REG_XOP_LWPCB): New.
>        (REG_XOP_LWP): New.
>        (XOP_09): New.
>        (XOP_0A): New.
>        (reg_table): Redirect REG_8F to XOP_8F_TABLE.
>        Add entries for REG_XOP_LWPCB and REG_XOP_LWP.
>        (xop_table): New.
>        (get_valid_dis386): Handle USE_XOP_8F_TABLE.
>        Use the offsets VEX_0F, VEX_0F38, and VEX_0F3A instead of their values
>        to access to the vex_table.
>        (OP_LWPCB_E): New.
>        (OP_LWP_E): New.
>        (OP_LWP_I): New.
>        * opcodes/i386-gen.c (cpu_flag_init): Add CPU_LWP_FLAGS, CpuLWP.
>        (cpu_flags): Add CpuLWP.
>        (opcode_modifiers): Add VexLWP, XOP09, and XOP0A.
>        * opcodes/i386-opc.h (CpuLWP): New.
>        (i386_cpu_flags): Add bit cpulwp.
>        (VexLWP): New.
>        (XOP09): New.
>        (XOP0A): New.
>        (i386_opcode_modifier): Add vexlwp, xop09, and xop0a.
>        * opcodes/i386-opc.tbl (llwpcb): Added.
>        (lwpval): Added.
>        (lwpins): Added.
>
> Tested on x86-64-linux with make -k check and on simnow.
> Ok to commit?
>

There is no 32bit LWP test. Is LWP 64bit only? If yes, you need to
add Cpu64 to LWP insns.

Also please update doc/c-i386.texi.


-- 
H.J.