cpu:atomic
差分
このページの2つのバージョン間の差分を表示します。
両方とも前のリビジョン前のリビジョン次のリビジョン | 前のリビジョン最新のリビジョン両方とも次のリビジョン | ||
cpu:atomic [2019/07/07 20:09] – [ARMv8.0A] oga | cpu:atomic [2019/07/07 21:07] – oga | ||
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行 152: | 行 152: | ||
ldrex r2, [r4] | ldrex r2, [r4] | ||
cmp r2, #0 | cmp r2, #0 | ||
- | beq .LBB0_18 | + | beq .LBB0_44 |
clrex | clrex | ||
- | b .LBB0_19 | + | b .LBB0_45 |
- | .LBB0_18: | + | .LBB0_44: |
dmb ish | dmb ish | ||
mov r0, #3 | mov r0, #3 | ||
strex r1, r0, [r4] | strex r1, r0, [r4] | ||
cmp r1, #0 | cmp r1, #0 | ||
- | ~ | + | beq .LBB0_53 |
+ | .LBB0_45: | ||
</ | </ | ||
行 206: | 行 207: | ||
<code asm> | <code asm> | ||
+ | .LBB0_47: | ||
ldrex r2, [r4] | ldrex r2, [r4] | ||
cmp r2, #3 | cmp r2, #3 | ||
- | bne .LBB0_24 | + | bne .LBB0_50 |
- | mov r0, #0 | + | |
- | dmb ish | + | |
- | .LBB0_22: | + | |
strex r1, r0, [r4] | strex r1, r0, [r4] | ||
cmp r1, #0 | cmp r1, #0 | ||
- | beq .LBB0_25 | + | bne .LBB0_47 |
- | ldrex r2, [r4] | + | dmb ish |
- | cmp r2, #3 | + | mov r1, #1 |
- | beq .LBB0_22 | + | b .LBB0_51 |
- | .LBB0_24: | + | .LBB0_50: |
clrex | clrex | ||
mov r1, #0 | mov r1, #0 | ||
dmb ish | dmb ish | ||
- | b .LBB0_26 | + | .LBB0_51: |
- | .LBB0_25: | + | |
- | dmb ish | + | |
- | mov r1, #1 | + | |
- | .LBB0_26: | + | |
</ | </ | ||
行 257: | 行 252: | ||
===== load ===== | ===== load ===== | ||
+ | |||
+ | ==== x64 (relaxed/ | ||
+ | |||
+ | <code asm> | ||
+ | movl (%rbx), | ||
+ | </ | ||
+ | |||
+ | |||
==== ARMv7A (relaxed) ==== | ==== ARMv7A (relaxed) ==== | ||
行 290: | 行 293: | ||
---- | ---- | ||
===== store ===== | ===== store ===== | ||
+ | |||
+ | ==== x64 (relaxed/ | ||
+ | |||
+ | <code asm> | ||
+ | movl %ebp, (%rbx) | ||
+ | </ | ||
+ | |||
==== ARMv7A (relaxed) ==== | ==== ARMv7A (relaxed) ==== |
cpu/atomic.txt · 最終更新: 2019/07/07 21:08 by oga