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Date: Wed, 21 Nov 2001 15:12:00 -0000
To: gdb-patches <gdb-patches@sources.redhat.com>
From: Pierre Muller <muller@cerbere.u-strasbg.fr>
Subject: [RFA] correct XMM register positions for win32.
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Message-ID: <20011121151200.2S8DKMRS-mF1bTO3SRRB39NXIjXJzYHpCTr1mgWhoGA@z>

   Thanks to Momchil Velikov,
Windows seems indeed to use FXSAVE 
assemlber instruction to fill the ExtendedRegisters
array.

   The same instruction with the same layout seems to be used
by the Pentium clones (at least for AMD).  

Thus the offset changed below are now 
tested and conform to the FXSAVE
instruction.


2001-11-30 Pierre Muller  <muller@ics.u-strasbg.fr>
	* win32-nat.c (mappings): Correct position of XMM registers,
	based on FXSAVE instruction structure.

Index: win32-nat.c
===================================================================
RCS file: /cvs/src/src/gdb/win32-nat.c,v
retrieving revision 1.40
diff -r1.40 win32-nat.c
182,191c182,191
<   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])
---
 >   context_offset (ExtendedRegisters[10*16]),
 >   context_offset (ExtendedRegisters[11*16]),
 >   context_offset (ExtendedRegisters[12*16]),
 >   context_offset (ExtendedRegisters[13*16]),
 >   context_offset (ExtendedRegisters[14*16]),
 >   context_offset (ExtendedRegisters[15*16]),
 >   context_offset (ExtendedRegisters[16*16]),
 >   context_offset (ExtendedRegisters[17*16]),
 >   /* MXCSR */
 >   context_offset (ExtendedRegisters[24])




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