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--- dev:crosscompiler:backend_ppc:register_allocation [2018/01/04 15:43] – ursgraf
+++ dev:crosscompiler:backend_ppc:register_allocation [2018/12/20 17:14] (current) – [Register Usage] ursgraf
@@ Line 3: / Line 3: @@
 ===== Register Usage =====
-Registers can be classified as //dedicated//, //volatile// or //nonvolatile//. //Dedicated// are register with a special purpose, such as the stackpointer. //Volatile// means, that this register might be used any time. It does not have to be stored when another method is called. //Nonvolatile// registers must be saved in the prologue of a method before they can be used and after use they must be restored. The number of volatile and nonvolatile registers must be equal for all methods.
 | Register | State | Use |
 | R0 | volatile | method prologue, scratch register |
@@ Line 25: / Line 25: @@
 ==== Parameter Passing ====
-Parameters are passes in R2..R10 and F1..F8.\\
+Parameters are passed in R2..R10 and F1..F8.\\
 In the interface //cgPPC/Registers// you can find the definitions about which registers are used for volatiles and nonvolatiles and which are used for parameter passing. Important: the number of parameter registers must be smaller or equal than the number of volatiles.

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