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Re: PATCH: Support i386 without SSE
- From: Mark Kettenis <mark dot kettenis at xs4all dot nl>
- To: hjl dot tools at gmail dot com
- Cc: gdb-patches at sourceware dot org
- Date: Thu, 8 Apr 2010 21:08:13 +0200 (CEST)
- Subject: Re: PATCH: Support i386 without SSE
- References: <20100407200547.GA20605@intel.com>
> Date: Wed, 7 Apr 2010 13:05:47 -0700
> From: "H.J. Lu" <hongjiu.lu@intel.com>
>
> Hi,
>
> This patch supports i386 without SSE. Any comments/suggestions?
Eli, Pierre, can you test wether this fixes the issues on Go32?
If so, I'm ok with this going in.
> 2010-04-07 H.J. Lu <hongjiu.lu@intel.com>
>
> * i386-linux-nat.c (have_ptrace_getfpxregs): Initialize to -1
> if HAVE_PTRACE_GETFPXREGS is defined.
> (i386_linux_read_description): Set have_ptrace_getfpxregs and
> have_ptrace_getregset to 0 if ptrace PTRACE_GETFPXREGS failed.
>
> * i386-linux-tdep.c: Include "features/i386/i386-mmx-linux.c"
> (i386_linux_core_read_description): Return tdesc_i386_mmx_linux
> if .reg-xfp section doesn't exist.
> (_initialize_i386_linux_tdep): Call initialize_tdesc_i386_mmx_linux.
>
> * i386-linux-tdep.h (tdesc_i386_mmx_linux): New.
>
> * i386-tdep.c: Include "features/i386/i386-mmx.c".
> (i386_go32_init_abi): Set tdesc to tdesc_i386_mmx.
> (i386_validate_tdesc_p): Make org.gnu.gdb.i386.sse optional. Set
> xcr0 to I386_XSTATE_X87_MASK if SSE isn't available.
> (i386_gdbarch_init): Update comments.
> (_initialize_i386_tdep): Call initialize_tdesc_i386_mmx.
>
> * common/i386-xstate.h (I386_XSTATE_X87_MASK): New.
>
> * features/Makefile (i386/i386-mmx-expedite): New.
> (i386/i386-mmx-linux-expedite): Likewise.
> ($(outdir)/i386/i386-mmx.dat): Likewise.
> ($(outdir)/i386/i386-mmx-linux.dat): Likewise.
>
> * features/i386/i386-mmx-linux.c: New.
> * features/i386/i386-mmx-linux.xml: Likewise.
> * features/i386/i386-mmx.c: Likewise.
> * features/i386/i386-mmx.xml: Likewise.
> * regformats/i386/i386-mmx-linux.dat: Likewise.
> * regformats/i386/i386-mmx.dat: Likewise.
>
> * features/Makefile (WHICH): Add i386/i386-mmx and
> i386/i386-mmx-linux.