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772 days ago
Unfiled. Edited by Faker 772 days ago
  • ARM投影片 筆記
  • CFSR:
ARM system developers' guide
        裡面提到了 SUBS 這個指令除了執行 SUB 外,還會去 update cpsr
        書中第 54 頁講了一個例子
  •         cpsr = nzcvqiFt_USER
  •         r1 = 0x00000001
  • 執行
  •         SUBS r1, r1, #1

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