Use la/jr pseudoinstructions for main function call #297
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romancardenas
previously approved these changes
Jun 13, 2025
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LGTM! Maybe #153 can benefit from this PR.
@janderholm please add an entry into the CHANGELOG.md file
rmsyn
previously approved these changes
Jun 13, 2025
alistair23
approved these changes
Jun 15, 2025
The code for RV32 and RV64 differs, but the call to main is the same |
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@janderholm can you add an entry to |
Replace direct jal with load address and jump register pseudoinstructions to support main functions located beyond the ±1MB range of direct jumps.
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Does this look alright? |
romancardenas
approved these changes
Jun 16, 2025
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Replace direct jal with load address and jump register pseudoinstructions to support main functions located beyond the ±1MB range of direct jumps.
Together with a custom link script, this allows placing the bulk of the code in RAM which is likely located far away.
I use it for loading everything from a very slow SPI flash into SRAM on an FPGA. But it's useful for things like decreasing power consumption by powering off flash as well.