Re: [RFA] SSE registers for cygxin target.

[Pierre Muller <muller at cerbere dot u-strasbg dot fr>]

Apparently, my Eudora change is not enough to get the patch to be correct,
so I add it attached.


>    The patch below adds SSE registers for cygwin target.
>
>The only missing code is an addendum to configure.in
>in order to check if CONTEXT_EXTENDED_REGISTERS 
>is known in winnt.h header file.
>I asked about this in 
>http://sources.redhat.com/ml/gdb/2001-11/msg00219.html
>but got no answers...
>
>    But I never wrote any of these rules, and I even don't know how to regenerate
>configure from configure.in file ...
>
>    For now, to test the patch, you will need to do
>a 'make clean' followed by a 'make "CFLAGS=-dHAVE_CONTEXT_EXTENDED_REGISTERS -gstabs+ -O1"'
>for instance.
>
>PS: I disabled flowed mode from my Eudora settings and hope that this will
>fix the problems existing in the latest patches I sent. Please ask me to send it again attached if 
>this patch does not aply cleanly.
>
>PS2: Once this patch is in, I will send the next, i.e.
>the support of debug registers... DJ Delorie's idea was
>correct, this works like a charm (at least for me
>on a Win2000 box).
>
>
>ChangeLog entry:
>2001-11-26 Pierre Muller  <muller@ics.u-strasbg.fr>
>
>         * config/i386/tm-cygwin.h: Define HAVE_SSE_REGS
>         if HAVE_CONTEXT_EXTENDED_REGISTERS is defined.
>         * win32-nat.c: Define CONTEXT_DEBUGGER_DR that will also
>         include extended registers if HAVE_SSE_REGS is defined.
>         (mappings array): Add offset of extended registers.
>         (thread_rec): Use new CONTEXT_DEBUGGER_DR macro.
>
>
>Index: config/i386/tm-cygwin.h
>===================================================================
>RCS file: /cvs/src/src/gdb/config/i386/tm-cygwin.h,v
>retrieving revision 1.10
>diff -u -r1.10 tm-cygwin.h
>--- tm-cygwin.h 2001/11/01 16:17:08     1.10
>+++ tm-cygwin.h 2001/11/26 09:47:09
>@@ -19,8 +19,12 @@
>      Foundation, Inc., 59 Temple Place - Suite 330,
>      Boston, MA 02111-1307, USA.  */
>   
>-
>-#undef HAVE_SSE_REGS   /* FIXME! win32-nat.c needs to support XMMi registers */
>+/* Use SSE registers if winnt.h contains information about them.  */
>+#ifdef HAVE_CONTEXT_EXTENDED_REGISTERS
>+#define HAVE_SSE_REGS
>+#else
>+#undef HAVE_SSE_REGS
>+#endif /* CONTEXT_EXTENDED_REGISTERS */
>   #define HAVE_I387_REGS
>   
>   #include "i386/tm-i386.h"
>Index: win32-nat.c
>===================================================================
>RCS file: /cvs/src/src/gdb/win32-nat.c,v
>retrieving revision 1.38
>diff -u -r1.38 win32-nat.c
>--- win32-nat.c 2001/11/24 19:00:03     1.38
>+++ win32-nat.c 2001/11/26 09:47:09
>@@ -25,6 +25,7 @@
>   /* We assume we're being built with and will be used for cygwin.  */
>   
>   #include "defs.h"
>+#include "tm.h"                        /* required for SSE registers */
>   #include "frame.h"            /* required by inferior.h */
>   #include "inferior.h"
>   #include "target.h"
>@@ -66,6 +67,13 @@
>   #include <sys/procfs.h>
>   #include <psapi.h>
>   
>+#ifdef HAVE_SSE_REGS
>+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER | CONTEXT_EXTENDED_REGISTERS 
>+#else
>+#define CONTEXT_DEBUGGER_DR CONTEXT_DEBUGGER
>+#endif
>+
>+
>   /* The string sent by cygwin when it processes a signal.
>      FIXME: This should be in a cygwin include file. */
>   #define CYGWIN_SIGNAL_STRING "cygwin: signal"
>@@ -169,6 +177,19 @@
>     context_offset (FloatSave.DataSelector),
>     context_offset (FloatSave.DataOffset),
>     context_offset (FloatSave.ErrorSelector)
>+#ifdef HAVE_SSE_REGS
>+  /* XMM0-7 */ ,
>+  context_offset (ExtendedRegisters[0*16]),
>+  context_offset (ExtendedRegisters[1*16]),
>+  context_offset (ExtendedRegisters[2*16]),
>+  context_offset (ExtendedRegisters[3*16]),
>+  context_offset (ExtendedRegisters[4*16]),
>+  context_offset (ExtendedRegisters[5*16]),
>+  context_offset (ExtendedRegisters[6*16]),
>+  context_offset (ExtendedRegisters[7*16]),
>+  /* MXCSR untested */
>+  context_offset (ExtendedRegisters[8*16])
>+#endif
>   };
>   
>   #undef context_offset
>@@ -210,7 +231,7 @@
>             else if (get_context < 0)
>               th->suspend_count = -1;
>   
>-           th->context.ContextFlags = CONTEXT_DEBUGGER;
>+           th->context.ContextFlags = CONTEXT_DEBUGGER_DR;
>             GetThreadContext (th->h, &th->context);
>           }
>         return th;
>
>
>
>Pierre Muller
>Institut Charles Sadron
>6,rue Boussingault
>F 67083 STRASBOURG CEDEX (France)
>mailto:muller@ics.u-strasbg.fr
>Phone : (33)-3-88-41-40-07  Fax : (33)-3-88-41-40-99

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Pierre Muller
Institut Charles Sadron
6,rue Boussingault
F 67083 STRASBOURG CEDEX (France)
mailto:muller@ics.u-strasbg.fr
Phone : (33)-3-88-41-40-07  Fax : (33)-3-88-41-40-99