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ARM 7 code porting
by albin on Feb 17, 2012 |
albin
Posts: 1 Joined: Dec 11, 2009 Last seen: Feb 17, 2012 |
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I have some code running on ARM7-TDMI-S that uses SPI and I2C peripheral.
Would like to port it to OpenRISC. Have anybody tried porting/compiling ARM7 code to OpenRISC? If yes, which compiler did you use? GCC, or? If yes, what kind of issues have you bumped into? Appreciate any tip and advice. |
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RE: ARM 7 code porting
by jeremybennett on Feb 17, 2012 |
jeremybennett
Posts: 815 Joined: May 29, 2008 Last seen: Jun 13, 2019 |
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I have some code running on ARM7-TDMI-S that uses SPI and I2C peripheral.
Would like to port it to OpenRISC. Have anybody tried porting/compiling ARM7 code to OpenRISC? If yes, which compiler did you use? GCC, or? If yes, what kind of issues have you bumped into? Appreciate any tip and advice. Hi Albin, Look forward to hearing how you get on. In principle it should work, particularly if the ARM7 code was originally compiled with GCC. However IIRC, ARM is usually little-endian, while OpenRISC is big-endian by default, so there is plenty of scope for endian bugs. The peripherals are presumably not identical, so you'll need to adjust the code accordingly. Best wishes, Jeremy
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