Commit Graph

12 Commits

Author SHA1 Message Date
George G. Davis b7d7ef87e1 [ARM] 3499/1: Fix VFP FPSCR corruption for double exception case
Patch from George G. Davis

The ARM VFP FPSCR register is corrupted when a condition flags modifying
VFP instruction is followed by a non-condition flags modifying VFP
instruction and both instructions raise exceptions.  The fix is to
read the current FPSCR in between emulation of these two instructions
and use the current FPSCR value when handling the second exception.

Signed-off-by: George G. Davis <gdavis@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-05 22:32:23 +01:00
Russell King 928bd1b470 [ARM] vfp: fix leak of VFP_NAN_FLAG into FPSCR
The VFP code can leak VFP_NAN_FLAG into the FPSCR. It doesn't correspond
to any real FPSCR bit (and overlaps one of the exception flags).

Bug report from Daniel Jacobowitz

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-25 20:41:27 +01:00
Catalin Marinas 1356c1948d [ARM] 3473/1: Use numbers 0-15 for the VFP double registers
Patch from Catalin Marinas

This patch changes the double registers numbering to 0-15 from even 0-30,
in preparation for future VFP extensions. It also fixes the VFP_REG_ZERO
bug (value 16 actually represents the 8th double register with the original
numbering).

The original mcrr/mrrc on CP10 were generating FMRRS/FMSRR instead of
FMRRD/FMDRR. The patch changes to CP11 for the correct instructions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-10 21:32:46 +01:00
Catalin Marinas 1320a80d1d [ARM] 3471/1: FTOSI functions should return 0 for NaN
Patch from Catalin Marinas

The NaN case was dealed with by the "exponent >= ... + 32" condition but it
was not setting the value "d" to 0.

Signed-off-by: Ken'ichi Kuromusha <musha@aplix.co.jp>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-10 21:32:39 +01:00
Catalin Marinas 80ed354725 [ARM] 3398/1: Fix the VFP registers loading/storing base address
Patch from Catalin Marinas

The current VFP code corrupts the VFP registers (including the control
ones) if more than one floating point application is executed at the same
time. This patch fixes the updating of the load/store base addresses for
the VFP registers.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-25 21:58:00 +00:00
Russell King 9c42954dfd [ARM] Move enable_irq and disable_irq to assembler.h
5d25ac038a broke VFP builds due to
enable_irq not being defined as an assembly macro.  Move it to
assembler.h so everyone can use it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-23 16:59:37 +00:00
Russell King 5d25ac038a [ARM] Move IRQ enable after coprocessor number decode
Allow the individual coprocessor handlers to decide when to enable
interrupts, rather than unconditionally enabling them.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-21 22:05:50 +00:00
Sam Ravnborg e6ae744dd2 kbuild: arm - use generic asm-offsets.h support
Delete obsoleted stuff from arch Makefile and rename
constants.h to asm-offsets.h

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-09 21:08:59 +02:00
Catalin Marinas 7b1fbf292b [PATCH] ARM: 2841/1: Fix VFP +/-0 case for doubles addition
Patch from Catalin Marinas

The IEEE 754 standard specifies that the result of (x - x), where x is
a valid number, should be -0 if the rounding mode is towards minus
infinity or +0 otherwise.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-03 19:53:25 +01:00
Russell King da41119af7 [PATCH] ARM: Don't force SIGFPE
We were forcing SIGFPE on to a user program for no good reason.
Use send_sig_info() instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-29 23:02:02 +01:00
Russell King 438a761679 [PATCH] ARM: Fix VFP to use do_div()
VFP used __divdi3 64-bit division needlessly.  Convert it to use
our 64-bit by 32-bit division instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-29 23:01:02 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00