 | | Re: GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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(...) I did not do so. The memory map in LEGO_MINDSTORMS_NXT_..._v1.03.bin is like this for the files: 0x11F000-0x12E99D Actual files like Demo.rxe 0x13FF00-0x13FF37 FILE_HANDLE(s) 0x13FFFC-0c13FFFF FILEVERSION The nxtgcc stuff compiles to 126176 (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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(...) Have you experimented at all with the compiler optimisation flags? I don't know if all of them are supported for the ARM architecture, and some options cause problems on other architectures, but there's a bit of a list here: (URL) removing (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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(...) More precisely, I was told to increase the STARTOFUSERFLASH value if I increased the firmware size beyond the current value. The unmodified source code compiles to 121324 bytes using the current evaluation version of the IAR Embedded Workbench (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | Re: GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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(...) Are you adjusting these values in d_loader.h? #define STARTOFFILETABLE (0x13FF00L) #define STARTOFUSERFLASH (0x11F000L) #define SIZEOFUSERFLASH (STARTOFFILETABLE - STARTOFUSERFLASH) I've been told by folks at LEGO that if I grow the size of (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | GCC vs. IAR compiler: Could GCC be tweaked to generate code as tight as IAR?
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Hi, If I compile the LEGO firmware sources with gcc, the code size increases much beyond the 128 KB (which I think) the IAR compiled sources fits into. That means that one have to relocate part of the compiled code into the memory areas between (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | Purpose of the group
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Hi NXT hackers[1], The purpose of this lugnet.robotics.nxt.nxthacking forum is to promote fun, educational, and lively discussions in a positive and supportive manner for both hardcore and not so hardcore embedded systems specialists. The background (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | ------( Terms of use for lugnet.com )------
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TERMS OF USE FOR LUGNET.COM As a user of this site, you are expected to read, understand, and abide by the Terms of Use as set forth herein. If you are under 18 years of age, ask your parent(s) or guardian(s) for permission before using LUGNET and (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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| | ------( Welcome to lugnet.robotics.nxt.nxthacking )------
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Welcome to lugnet.robotics.nxt.nxthacking, a LUGNET discussion group. CHARTER/PURPOSE: lugnet.robotics.nxt.nxthacking (group): Focused discussion group for NXT™ firmware hacking: Exchanging ideas about NXT firmware hacking, optimization of code, (...) (19 years ago, 14-Mar-07, to lugnet.robotics.nxt.nxthacking)
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