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用gdb寫暫存器的語法
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Author:  cindy [ Tue Aug 02, 2011 10:34 am ]
Post subject:  用gdb寫暫存器的語法

有幾種方式可以寫暫存器。

(1) 用gdb寫。例如,set $r1=0x300001
寫完之後,讀出來驗證,command為 p/x $r1
(2) 用inline assembly來寫。請參考programming guide的
18.9. Inline Assembly Programming
程式的語法類似這樣
__asm__ ("add\t%0, %1, %2\n\t"
"movi\t$r6, 123\n\t"
"add\t%0, %0, $r6"
: "=r" (ret)
: "r" (i), "r" (j)
: "$r6");

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