dev:crosscompiler:backend_arm:register_allocation
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| dev:crosscompiler:backend_arm:register_allocation [2018/12/21 11:01] – [Parameter Passing] ursgraf | dev:crosscompiler:backend_arm:register_allocation [2019/08/29 16:00] – ursgraf | ||
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| Line 13: | Line 13: | ||
| | R15 | dedicated | PC | | | R15 | dedicated | PC | | ||
| | D0 | dedicated| scratch register | | | D0 | dedicated| scratch register | | ||
| - | | D1 | volatile | + | | D1 | dedicated| scratch register, return value | |
| - | | D2-D6 | volatile | further | + | | D2-D6 | volatile | parameters, local variables | |
| | D7-D10 | volatile | local variables | | | D7-D10 | volatile | local variables | | ||
| | D11-D31 | nonvolatile | local variables | | | D11-D31 | nonvolatile | local variables | | ||
| Line 57: | Line 57: | ||
| + | When dividing numbers of type long, a large number of auxiliary registers are necessary. For these cases the register allocation is run with a reduced register set with the same reserved registers as above given above. | ||
dev/crosscompiler/backend_arm/register_allocation.txt · Last modified: 2019/10/03 10:22 by ursgraf
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