dev:crosscompiler:backend_arm:code_generator
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| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
| dev:crosscompiler:backend_arm:code_generator [2019/07/27 16:32] – [Code Generator for ARM] ursgraf | dev:crosscompiler:backend_arm:code_generator [2019/10/01 12:15] – [Stackframe] ursgraf | ||
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| ====== Code Generator for ARM ====== | ====== Code Generator for ARM ====== | ||
| - | Everything which is not fully implemented is listed below | ||
| - | ^topic^remarks^ | ||
| - | |throw| do together with exceptions | | ||
| - | |new| tests for three dimensional arrays fail| | ||
| - | |exceptions| | | ||
| - | |US.HALT|what to do here?| | ||
| - | |||
| All results of all SSA instructions have an assigned register. Now, each SSA instruction can be translated into one or a sequence of machine instructions. In order to do this, we must define the stackframe, which is used when calling a method. | All results of all SSA instructions have an assigned register. Now, each SSA instruction can be translated into one or a sequence of machine instructions. In order to do this, we must define the stackframe, which is used when calling a method. | ||
| Line 14: | Line 7: | ||
| Explanation: | Explanation: | ||
| - | LR is saved onto the stack together with the necessary nonvolatile GPRs. Even if method is a leaf method LR must be saved onto the stack because LR serves as a scratch register within a method. Considering the GPR's and EXTRs, all nonvolatile register, which are used within this method, must be saved on the stack. Nonvolatiles in EXTR registers occupy either 8 bytes (EXTRD) or a bytes (EXTRS). \\ | + | LR is saved onto the stack together with the necessary nonvolatile GPRs. Even if method is a leaf method LR must be saved onto the stack because LR serves as a scratch register within a method. Considering the GPR's and EXTRs, all nonvolatile register, which are used within this method, must be saved on the stack. Nonvolatiles in EXTR registers occupy either 8 bytes (EXTRD) or 4 bytes (EXTRS). \\ |
| Important: volatile EXTR's must be saved as well if '' | Important: volatile EXTR's must be saved as well if '' | ||
dev/crosscompiler/backend_arm/code_generator.txt · Last modified: 2022/12/20 11:34 by ursgraf
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