diff options
| author | Alexander Holler <holler@ahsoftware.de> | 2011-01-09 12:19:44 +0000 |
|---|---|---|
| committer | Albert Aribaud <albert.aribaud@free.fr> | 2011-02-02 00:54:44 +0100 |
| commit | 3c0659b535b075be124c3d2a0714e55e65c46737 (patch) | |
| tree | e8d99c2dff1e0d6afdaf83b6b5301dbe47ce7e5b /arch/arm/cpu/arm925t/start.S | |
| parent | 3c152165c78408e44845f2d08469db887f050e43 (diff) | |
| download | u-boot-imx-3c0659b535b075be124c3d2a0714e55e65c46737.zip u-boot-imx-3c0659b535b075be124c3d2a0714e55e65c46737.tar.gz u-boot-imx-3c0659b535b075be124c3d2a0714e55e65c46737.tar.bz2 | |
ARM: Avoid compiler optimization for readb, writeb and friends.
gcc 4.5.1 seems to ignore (at least some) volatile definitions,
avoid that as done in the kernel.
Reading C99 6.7.3 8 and the comment 114) there, I think it is a bug of that
gcc version to ignore the volatile type qualifier used e.g. in __arch_getl().
Anyway, using a definition as in the kernel headers avoids such optimizations when
gcc 4.5.1 is used.
Maybe the headers as used in the current linux-kernel should be used,
but to avoid large changes, I've just added a small change to the current headers.
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Alessandro Rubini <rubini-list@gnudd.com>
Tested-by: Thomas Weber <weber@corscience.de>
Acked-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Diffstat (limited to 'arch/arm/cpu/arm925t/start.S')
0 files changed, 0 insertions, 0 deletions