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Dave Martin 638591cd7b ARM: 7626/1: arm/crypto: Make asm SHA-1 and AES code Thumb-2 compatible 
This patch fixes aes-armv4.S and sha1-armv4-large.S to work
natively in Thumb.  This allows ARM/Thumb interworking workarounds
to be removed.

I also take the opportunity to convert some explicit assembler
directives for exported functions to the standard
ENTRY()/ENDPROC().

For the code itself:

  * In sha1_block_data_order, use of TEQ with sp is deprecated in
    ARMv7 and not supported in Thumb.  For the branches back to
    .L_00_15 and .L_40_59, the TEQ is converted to a CMP, under the
    assumption that clobbering the C flag here will not cause
    incorrect behaviour.

    For the first branch back to .L_20_39_or_60_79 the C flag is
    important, so sp is moved temporarily into another register so
    that TEQ can be used for the comparison.

  * In the AES code, most forms of register-indexed addressing with
    shifts and rotates are not permitted for loads and stores in
    Thumb, so the address calculation is done using a separate
    instruction for the Thumb case.

The resulting code is unlikely to be optimally scheduled, but it
should not have a large impact given the overall size of the code.
I haven't run any benchmarks.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Tested-by: David McCullough <ucdevel@gmail.com> (ARM only)
Acked-by: David McCullough <ucdevel@gmail.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 		2013-01-13 12:41:22 +00:00
..
boot ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
common Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 2013-01-09 08:58:57 -08:00
configs arm: mvebu: Use dw-apb-uart instead of ns16650 as UART driver 2013-01-06 17:41:14 +00:00
crypto ARM: 7626/1: arm/crypto: Make asm SHA-1 and AES code Thumb-2 compatible 2013-01-13 12:41:22 +00:00
include Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 2012-12-20 18:05:28 -08:00
kernel ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
lib ARM: export default read_current_timer 2012-10-09 20:24:36 +02:00
mach-at91 Sound updates for 3.8-rc1 2012-12-13 11:51:23 -08:00
mach-bcm Add support for generic BCM SoC chipsets 2012-11-19 22:39:07 -08:00
mach-bcm2835 ARM: arm-soc: SoC updates for 3.8 2012-12-12 12:05:15 -08:00
mach-clps711x ARM: clps711x: Rename board files to match functionality 2012-11-21 09:57:46 -08:00
mach-cns3xxx ARM: arm-soc: Non-critical bug fixes 2012-12-12 11:32:16 -08:00
mach-davinci ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-dove ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-ebsa110 ARM: soc: driver specific changes 2012-10-01 18:46:13 -07:00
mach-ep93xx ARM: ep93xx: properly wait for UART FIFO to be empty 2012-12-12 11:22:56 +11:00
mach-exynos ARM: EXYNOS: skip the clock initialization for exynos5440 2013-01-05 08:32:55 -08:00
mach-footbridge ARM: config: sort select statements alphanumerically 2012-10-13 17:11:28 +01:00
mach-gemini
…
mach-h720x ARM: config: sort select statements alphanumerically 2012-10-13 17:11:28 +01:00
mach-highbank ARM: highbank: save and restore L2 cache and GIC on suspend 2013-01-07 21:08:26 -08:00
mach-imx Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 2013-01-09 08:58:57 -08:00
mach-integrator ARM: arm-soc: SoC updates for 3.8 2012-12-12 12:05:15 -08:00
mach-iop13xx ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-iop32x
…
mach-iop33x
…
mach-ixp4xx Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-12-12 11:30:02 -08:00
mach-kirkwood ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
mach-ks8695 ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-l7200/include/mach
…
mach-lpc32xx ARM: LPC32xx: Add the motor PWM clock 2012-11-12 11:27:40 +01:00
mach-mmp ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-msm ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-mv78xx0 ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-mvebu arm: mvebu: add L2 cache support 2012-11-27 15:35:05 +00:00
mach-mxs Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2012-12-18 09:58:09 -08:00
mach-netx treewide: Fix typos in various drivers 2012-12-03 11:05:04 +01:00
mach-nomadik ARM: nomadik: bump the IRQ numbers again 2013-01-03 23:42:07 +01:00
mach-omap1 ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
mach-omap2 ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
mach-orion5x ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-picoxcell
…
mach-prima2 ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-pxa ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-realview ARM: 7607/1: realview: fix private peripheral memory base for EB rev. B boards 2012-12-20 10:42:00 +00:00
mach-rpc ARM: rpc: check device_register return code in ecard_probe 2012-10-07 10:33:09 +02:00
mach-s3c24xx ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-s3c64xx ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-s3c2410
…
mach-s3c2412 ARM: config: sort select statements alphanumerically 2012-10-13 17:11:28 +01:00
mach-s3c2440 ARM: config: sort select statements alphanumerically 2012-10-13 17:11:28 +01:00
mach-s5p64x0 ARM: S5P64X0: Add I2S clkdev support 2012-12-19 09:49:29 -08:00
mach-s5pc100 ARM: S5PC100: Add I2S clkdev support 2012-12-19 09:49:29 -08:00
mach-s5pv210 ARM: S5PV210: Avoid passing the clks through platform data 2012-12-19 09:49:29 -08:00
mach-sa1100 ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-shark Merge branch 'late/fixes' into fixes 2012-10-07 07:22:32 -07:00
mach-shmobile fbdev changes for 3.8: 2012-12-15 13:03:48 -08:00
mach-socfpga ARM: socfpga: mark secondary_trampoline as cpuinit 2012-11-06 23:14:49 +01:00
mach-spear3xx ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/ 2012-11-26 16:55:33 +05:30
mach-spear6xx
…
mach-spear13xx ARM: SPEAr1310: Fix AUXDATA for compact flash controller 2012-11-26 16:55:31 +05:30
mach-sunxi sunxi: Change the machine compatible string. 2012-12-23 18:20:15 +01:00
mach-tegra ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-u300 ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
mach-ux500 ARM: ux500: add pinctrl address resources 2012-12-26 01:59:54 +01:00
mach-versatile ARM: 7610/1: versatile: bump IRQ numbers 2013-01-02 10:35:06 +00:00
mach-vexpress ARM: 7609/1: disable errata work-arounds which access secure registers 2013-01-02 10:35:05 +00:00
mach-vt8500 ARM: arm-soc: multiplatform conversion patches 2012-12-13 10:57:16 -08:00
mach-w90x900
…
mach-zynq ARM: zynq: Remove all unused mach headers 2012-11-21 10:52:21 +01:00
mm ARM: 7616/1: cache-l2x0: aurora: Use writel_relaxed instead of writel 2013-01-07 15:04:17 +00:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-12-12 18:07:07 -08:00
nwfpe
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oprofile
…
plat-iop
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plat-omap ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
plat-orion ARM: arm-soc: Updates for Marvell mvebu/kirkwood 2012-12-14 14:54:26 -08:00
plat-pxa ARM: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
plat-s3c24xx Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-12-13 12:00:02 -08:00
plat-samsung ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
plat-spear ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/ 2012-11-26 16:55:33 +05:30
plat-versatile ARM: arm-soc: SoC updates for 3.8 2012-12-12 12:05:15 -08:00
tools ARM: boot: Fix usage of kecho 2012-11-12 23:22:54 +01:00
vfp ARM: 7566/1: vfp: fix save and restore when running on pre-VFPv3 and CONFIG_VFPv3 set 2012-10-29 10:04:05 +00:00
xen Features: 2012-12-13 14:29:16 -08:00
Kconfig Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 2013-01-09 08:58:57 -08:00
Kconfig-nommu
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Kconfig.debug ARM: arm-soc: multiplatform conversion patches 2012-12-13 10:57:16 -08:00
Makefile ARM: arm-soc: multiplatform conversion patches 2012-12-13 10:57:16 -08:00