tree 4e0333e6a0b6ee4601b0232baa1c5d4832c4aec5 parent 9c7d3b3a6b6aaeded9d9e5c5111dbcc65b0b0f91 author Russell King <[EMAIL PROTECTED]> Mon, 18 Apr 2005 22:50:01 +0100 committer Russell King <[EMAIL PROTECTED]> Mon, 18 Apr 2005 22:50:01 +0100
[PATCH] ARM: Add missing new file for bitops patch Signed-off-by: Russell King <[EMAIL PROTECTED]> arm/lib/bitops.h | 33 +++++++++++++++++++++++++++++++++ 1 files changed, 33 insertions(+) Index: arch/arm/lib/bitops.h =================================================================== --- /dev/null (tree:19b2c9e85dcab6df9250ba38df885d951c96e0a6) +++ 4e0333e6a0b6ee4601b0232baa1c5d4832c4aec5/arch/arm/lib/bitops.h (mode:100644 sha1:4a83ab6cd565d21ab0385bac6643826b83c2fcd4) @@ -0,0 +1,33 @@ + .macro bitop, instr + and r2, r0, #7 + mov r3, #1 + mov r3, r3, lsl r2 + save_and_disable_irqs ip, r2 + ldrb r2, [r1, r0, lsr #3] + \instr r2, r2, r3 + strb r2, [r1, r0, lsr #3] + restore_irqs ip + mov pc, lr + .endm + +/** + * testop - implement a test_and_xxx_bit operation. + * @instr: operational instruction + * @store: store instruction + * + * Note: we can trivially conditionalise the store instruction + * to avoid dirting the data cache. + */ + .macro testop, instr, store + add r1, r1, r0, lsr #3 + and r3, r0, #7 + mov r0, #1 + save_and_disable_irqs ip, r2 + ldrb r2, [r1] + tst r2, r0, lsl r3 + \instr r2, r2, r0, lsl r3 + \store r2, [r1] + restore_irqs ip + moveq r0, #0 + mov pc, lr + .endm - To unsubscribe from this list: send the line "unsubscribe bk-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
