This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
dev:crosscompiler:backend_arm:register_allocation [2019/08/29 16:00] – ursgraf | dev:crosscompiler:backend_arm:register_allocation [2019/10/03 10:22] (current) – [Parameter Passing] ursgraf | ||
---|---|---|---|
Line 32: | Line 32: | ||
===== Parameter Passing ===== | ===== Parameter Passing ===== | ||
- | Parameters are passed in R0..R5 and D1..D6.\\ | + | Parameters are passed in R0..R5 and D2..D6.\\ |
- | In the interface // | + | In the interface // |
- | |S0|S1|S2|S3|S4|S5|S6|S7|S8|S9| | + | |S0|S1|S2|S3|S4|S5|S6|S7|S8|S9|S10|S11| |
- | | D0 || D1 || D2 || D3 || D4 || | + | | D0 || D1 || D2 || D3 || D4 |
- | | ^^a| ^ b ^^c| ^ d ^^ | + | | ^| ^^a| ^ b ^^c| ^ d ^^ |
+ | |||
+ | If the parameters do not fit into the parameter register, they will be passed on the stack in a special parameter block. Note that the block is filled with parameters of type integer (offset increases with parameter number) first. After this parameters of type float and double are pushed into this block. Parameters of type float and double both occupy 8 bytes. | ||
===== Locals on the Stack ===== | ===== Locals on the Stack ===== |