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| author | Kevin | 2014-11-15 10:00:36 +0800 |
|---|---|---|
| committer | Kevin | 2014-11-15 10:00:36 +0800 |
| commit | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (patch) | |
| tree | de942df665fac4bac0d9cb7ae86910fe937b0c1a /ANDROID_3.4.5/arch/arm/lib/putuser.S | |
| parent | 392e8802486cb573b916e746010e141a75f507e6 (diff) | |
| download | FOSSEE-netbook-kernel-source-9d40ac5867b9aefe0722bc1f110b965ff294d30d.tar.gz FOSSEE-netbook-kernel-source-9d40ac5867b9aefe0722bc1f110b965ff294d30d.tar.bz2 FOSSEE-netbook-kernel-source-9d40ac5867b9aefe0722bc1f110b965ff294d30d.zip | |
add via modify part source code for wm8880 4.4 kitkat
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/lib/putuser.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/lib/putuser.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/arch/arm/lib/putuser.S b/ANDROID_3.4.5/arch/arm/lib/putuser.S index 7db25990..3d73dcb9 100644 --- a/ANDROID_3.4.5/arch/arm/lib/putuser.S +++ b/ANDROID_3.4.5/arch/arm/lib/putuser.S @@ -16,6 +16,7 @@ * __put_user_X * * Inputs: r0 contains the address + * r1 contains the address limit, which must be preserved * r2, r3 contains the value * Outputs: r0 is the error code * lr corrupted @@ -27,16 +28,19 @@ * Note also that it is intended that __put_user_bad is not global. */ #include <linux/linkage.h> +#include <asm/assembler.h> #include <asm/errno.h> #include <asm/domain.h> ENTRY(__put_user_1) + check_uaccess r0, 1, r1, ip, __put_user_bad 1: TUSER(strb) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_1) ENTRY(__put_user_2) + check_uaccess r0, 2, r1, ip, __put_user_bad mov ip, r2, lsr #8 #ifdef CONFIG_THUMB2_KERNEL #ifndef __ARMEB__ @@ -60,12 +64,14 @@ ENTRY(__put_user_2) ENDPROC(__put_user_2) ENTRY(__put_user_4) + check_uaccess r0, 4, r1, ip, __put_user_bad 4: TUSER(str) r2, [r0] mov r0, #0 mov pc, lr ENDPROC(__put_user_4) ENTRY(__put_user_8) + check_uaccess r0, 8, r1, ip, __put_user_bad #ifdef CONFIG_THUMB2_KERNEL 5: TUSER(str) r2, [r0] 6: TUSER(str) r3, [r0, #4] |