臂组装编程 [英] Arm assembly programming
问题描述
在arm汇编代码中,我看到下面的行使用了=。究竟这个操作符是什么用于手臂。
ldr r0,=常数
我们可以使用的常数,如任何地址或变量持有地址或价值?
我会用它像
ldr r0,= 0x5(5是一个值)
或
ldr r0,= 0x400000(其中0x400000是地址)
或
ldr r0,= ADDR_PTR(其中ADDR_PTR是一个占地址的变量)
以上所有事情都是正确的,或者我在这里理解错误。
假设你的问题没有副本参考手册,您可以通过以下方式轻松找到答案: https://www.google.com/search?q = arm + assembly [ ^ ]
In arm assembly code, I am seeing the below line where "=" is used. what exactly this operator is used in arm.
ldr r0, =CONSTANT
what constant we can use, like any address or a variable which holds the address or a value?
shall i use it like
ldr r0, =0x5 (5 is a value)
or
ldr r0, =0x400000 (where 0x400000 is an address)
or
ldr r0, =ADDR_PTR (where ADDR_PTR is a variable hoding a address)
Is all the above things correct or i am understanding something wrong here.
Assuming from your question you do not have a copy of a reference manual, you can find the answers quite easily by following: https://www.google.com/search?q=arm+assembly[^].
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