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Re: MMX and floating point insn suport for reversible debugging
- From: paawan oza <paawan1982 at yahoo dot com>
- To: Hui Zhu <teawater at gmail dot com>
- Cc: Thiago Jung Bauermann <bauerman at br dot ibm dot com>, gdb ml <gdb at sourceware dot org>, Pedro Alves <pedro at codesourcery dot com>, Marc Khouzam <marc dot khouzam at ericsson dot com>, Michael Snyder <msnyder at vmware dot com>, Eli Zaretskii <eliz at gnu dot org>, Mark Kettenis <mark dot kettenis at xs4all dot nl>
- Date: Sun, 10 May 2009 06:45:04 -0700 (PDT)
- Subject: Re: MMX and floating point insn suport for reversible debugging
Hi Hui,
dont we need to save FPU flags also, while saving floating point registers?
for e.g. instruction
FMUL/FMULP/FIMULâMultiply ; aafter the result,
FPU flags may get affected
as follows.
FPU Flags Affected
C1 Set to 0 if stack underflow occurred.
Set if result was rounded up; cleared otherwise.
C0, C2, C3 Undefined.
what is you opinion ?
Regards,
Oza.