1 #include <asm/unwind.h>
3 #if __LINUX_ARM_ARCH__ >= 6
4 .macro bitop, name, instr
8 strneb r1, [ip] @ assert word-aligned
10 and r3, r0, #31 @ Get bit offset
12 add r1, r1, r0, lsl #2 @ Get word offset
13 #if __LINUX_ARM_ARCH__ >= 7
29 .macro testop, name, instr, store
33 strneb r1, [ip] @ assert word-aligned
35 and r3, r0, #31 @ Get bit offset
37 add r1, r1, r0, lsl #2 @ Get word offset
38 mov r3, r2, lsl r3 @ create mask
41 ands r0, r2, r3 @ save old value of bit
42 \instr r2, r2, r3 @ toggle bit
54 .macro bitop, name, instr
58 strneb r1, [ip] @ assert word-aligned
63 save_and_disable_irqs ip
64 ldr r2, [r1, r0, lsl #2]
66 str r2, [r1, r0, lsl #2]
74 * testop - implement a test_and_xxx_bit operation.
75 * @instr: operational instruction
76 * @store: store instruction
78 * Note: we can trivially conditionalise the store instruction
79 * to avoid dirtying the data cache.
81 .macro testop, name, instr, store
85 strneb r1, [ip] @ assert word-aligned
88 save_and_disable_irqs ip
89 ldr r2, [r1, r0, lsl #2]!
92 \instr r2, r2, r0, lsl r3