linux/arch/arm/mach-footbridge
Daniel Jacobowitz 6a39dd6222 [ARM] 3759/2: Remove uses of %?
Patch from Daniel Jacobowitz

The ARM kernel has several uses of asm("foo%?").  %? is a GCC internal
modifier used to output conditional execution predicates.  However, no
version of GCC supports conditionalizing asm statements.  GCC 4.2 will
correctly expand %? to the empty string in user asms.  Earlier versions may
reuse the condition from the previous instruction.  In 'if (foo) asm
("bar%?");' this is somewhat likely to be right... but not reliable.

So, the only safe thing to do is to remove the uses of %?.  I believe
the tlbflush.h occurances were supposed to be removed before, based
on the comment about %? not working at the top of that file.

Old versions of GCC could omit branches around user asms if the asm didn't
mark the condition codes as clobbered.  This problem hasn't been seen on any
recent (3.x or 4.x) GCC, but it could theoretically happen.  So, where
%? was removed a cc clobber was added.

Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-20 14:58:35 +01:00
..
cats-hw.c [ARM] Fix cats build 2006-07-14 16:23:33 +01:00
cats-pci.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
co285.c [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
common.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
common.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dc21285-timer.c [PATCH] ARM: fixup irqflags breakage after ARM genirq merge 2006-07-02 17:29:22 -07:00
dc21285.c [ARM] 3759/2: Remove uses of %? 2006-09-20 14:58:35 +01:00
dma.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ebsa285-leds.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
ebsa285-pci.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ebsa285.c [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
isa-irq.c [ARM] Fix ISA IRQ resources 2006-07-03 13:18:04 +01:00
isa-timer.c [PATCH] ARM: fixup irqflags breakage after ARM genirq merge 2006-07-02 17:29:22 -07:00
isa.c [SERIAL] Use an enum for serial8250 platform device IDs 2005-09-08 16:04:41 +01:00
Kconfig [PATCH] Kconfig fix (BLK_DEV_FD dependencies) 2005-09-07 17:17:12 -07:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile.boot Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
netwinder-hw.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
netwinder-leds.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
netwinder-pci.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
personal-pci.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
personal.c [ARM] 3260/1: remove phys_ram from struct machine_desc (part 2) 2006-01-13 20:51:52 +00:00
time.c [PATCH] RTC: Remove RTC UIP synchronization on ARM 2006-03-28 09:16:00 -08:00