| bitops.h (597473720f4dc69749542bfcfed4a927a43d935e) | bitops.h (dda5f312bb09e56e7a1c3e3851f2000eb2e9c879) |
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| 1/* SPDX-License-Identifier: GPL-2.0 */ 2#include <asm/assembler.h> 3#include <asm/unwind.h> 4 5#if __LINUX_ARM_ARCH__ >= 6 6 .macro bitop, name, instr 7ENTRY( \name ) 8UNWIND( .fnstart ) --- 14 unchanged lines hidden (view full) --- 23 strex r0, r2, [r1] 24 cmp r0, #0 25 bne 1b 26 bx lr 27UNWIND( .fnend ) 28ENDPROC(\name ) 29 .endm 30 | 1/* SPDX-License-Identifier: GPL-2.0 */ 2#include <asm/assembler.h> 3#include <asm/unwind.h> 4 5#if __LINUX_ARM_ARCH__ >= 6 6 .macro bitop, name, instr 7ENTRY( \name ) 8UNWIND( .fnstart ) --- 14 unchanged lines hidden (view full) --- 23 strex r0, r2, [r1] 24 cmp r0, #0 25 bne 1b 26 bx lr 27UNWIND( .fnend ) 28ENDPROC(\name ) 29 .endm 30 |
| 31 .macro testop, name, instr, store | 31 .macro __testop, name, instr, store, barrier |
| 32ENTRY( \name ) 33UNWIND( .fnstart ) 34 ands ip, r1, #3 35 strbne r1, [ip] @ assert word-aligned 36 mov r2, #1 37 and r3, r0, #31 @ Get bit offset 38 mov r0, r0, lsr #5 39 add r1, r1, r0, lsl #2 @ Get word offset 40 mov r3, r2, lsl r3 @ create mask | 32ENTRY( \name ) 33UNWIND( .fnstart ) 34 ands ip, r1, #3 35 strbne r1, [ip] @ assert word-aligned 36 mov r2, #1 37 and r3, r0, #31 @ Get bit offset 38 mov r0, r0, lsr #5 39 add r1, r1, r0, lsl #2 @ Get word offset 40 mov r3, r2, lsl r3 @ create mask |
| 41 smp_dmb | 41 \barrier |
| 42#if __LINUX_ARM_ARCH__ >= 7 && defined(CONFIG_SMP) 43 .arch_extension mp 44 ALT_SMP(W(pldw) [r1]) 45 ALT_UP(W(nop)) 46#endif 471: ldrex r2, [r1] 48 ands r0, r2, r3 @ save old value of bit 49 \instr r2, r2, r3 @ toggle bit 50 strex ip, r2, [r1] 51 cmp ip, #0 52 bne 1b | 42#if __LINUX_ARM_ARCH__ >= 7 && defined(CONFIG_SMP) 43 .arch_extension mp 44 ALT_SMP(W(pldw) [r1]) 45 ALT_UP(W(nop)) 46#endif 471: ldrex r2, [r1] 48 ands r0, r2, r3 @ save old value of bit 49 \instr r2, r2, r3 @ toggle bit 50 strex ip, r2, [r1] 51 cmp ip, #0 52 bne 1b |
| 53 smp_dmb | 53 \barrier |
| 54 cmp r0, #0 55 movne r0, #1 562: bx lr 57UNWIND( .fnend ) 58ENDPROC(\name ) 59 .endm | 54 cmp r0, #0 55 movne r0, #1 562: bx lr 57UNWIND( .fnend ) 58ENDPROC(\name ) 59 .endm |
| 60 61 .macro testop, name, instr, store 62 __testop \name, \instr, \store, smp_dmb 63 .endm 64 65 .macro sync_testop, name, instr, store 66 __testop \name, \instr, \store, __smp_dmb 67 .endm |
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| 60#else 61 .macro bitop, name, instr 62ENTRY( \name ) 63UNWIND( .fnstart ) 64 ands ip, r1, #3 65 strbne r1, [ip] @ assert word-aligned 66 and r2, r0, #31 67 mov r0, r0, lsr #5 --- 40 unchanged lines hidden --- | 68#else 69 .macro bitop, name, instr 70ENTRY( \name ) 71UNWIND( .fnstart ) 72 ands ip, r1, #3 73 strbne r1, [ip] @ assert word-aligned 74 and r2, r0, #31 75 mov r0, r0, lsr #5 --- 40 unchanged lines hidden --- |