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Perry Kivolowitz 2022-06-06 10:05:17 -05:00
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section_1/funcs/README2.md
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@ -4,7 +4,7 @@ Up to 8 parameters can be passed directly via registers. Each parameter can be u
For the purposes of the present discussion, we assume all parameters are `long int` and are therefore stored in `x` registers. For the purposes of the present discussion, we assume all parameters are `long int` and are therefore stored in `x` registers.
Up to 8 parameters are passed in the scratch registers (of which there are 8). These are `x0` through `x7`. *Scratch* means the value of the register can be changed at will without any need to backup or restore their values. Up to 8 parameters are passed in the scratch registers (of which there are 8). These are `x0` through `x7`. *Scratch* means the value of the register can be changed at will without any need to backup or restore their values.
**This also means that you cannot count on the contents of the scratch registers maintaining their value if your function makes any function calls itself.** **This also means that you cannot count on the contents of the scratch registers maintaining their value if your function makes any function calls itself.**