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Re: [arm-gnu] RBIT instruction issue
- To: Seifeddine JLASSI <seifeddine.jlassi@xxxxxx>
- Subject: Re: [arm-gnu] RBIT instruction issue
- From: Nathan Sidwell <nathan@xxxxxxxxxxxxxxxx>
- Date: Tue, 09 Sep 2008 15:22:38 +0100
Seifeddine,
I am working on a project on the STM32 microcontroller, which is a Cortex-M3 MCU, using GNU compiler.
When I am trying to use the RBIT instruction: RBIT Rd, Rn the compiler will replace the Rn register by default by R0.
The problem is that I cannot use the R0 in that instruction. In other hand, why the compiler changes the register? Normally an assembly code has not to be modified. I am using the last version of code sourcery: 2008 q1. There is a patch for this issue?
This is a bug. It will be fixed in the next release of the ARM tools, which is
scheduled for October.
nathan
--
Nathan Sidwell :: http://www.codesourcery.com :: CodeSourcery
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