gcc doesn't know how to parse the asm to figure out whether the code is reading and/or writing any given variable: Output operand expressions must be lvalues; the compiler can check this. The input operands need not be lvalues. The compiler cannot check whether the operands have data types that are...

Ah, seems to make sense.

So really, even though it's not in that register, any inlined code can treat it as if it really is?

But then, why does the inline constraints have to directly specify the input operands?

Sorry for reviving such an old thread, I just really didn't want to make another considering it's a question related to the adventure started in this thread :lol: I know the KOS has this stuff implemented already, I think it's in "kernel/arch/ dreamcast/include/ dc/math.h"? Either way, for...

I've finally gotten the KOS to compile, well it was a few days ago but I've had internet problems. Anywhoo, Everything has compiled fine, the kos-ports and even dcload has compiled and is working just fine. However, I think something has gone wrong behind the scenes. For example, if I compile the pv...

Okay, after looking further into the links provided (thanks again!), The Sh4 CPU does indeed have opcodes/registers for optimizing vector calcualtions. Which is awesome, but before I start screwing around with this, I've got a few questions about the KOS's PVR API. Sorry if any of these are obvious/...

Yeah, I changed all the paths and they appear to be correct. Here's the environ.sh file: # KallistiOS environment variable settings # # This is a sample script. Configure to suit your setup. Some possible # alternatives for the values below are included as an example. # # This script should be execu...

Well it seems I'm very nearly there with this :grin: I managed to source the environ script just fine, and I nearly got and example to compile.. (Nearly). nico@ubuntu:~/cadcdev/kos/examples/dreamcast/pvr/texture_render$ make rm -f texture_render.elf rm -f texture_render.bin kos-cc -c ta.c -o ta.o ta...

I just followed the instructions from the 'cadcdev/kos/doc/README' file under the 'BUILDING' section. Edit the sample file to reflect the desired platform. It was DC for me, but maybe N64 for you? At that point open a terminal, or console window, and run 'source environ.sh', where the environ.sh fi...

Stryfe wrote:I personally compiled this on a x86_64 system. I'm pretty sure all sourcing the environ.sh file does is set certain environmental variables by calling the export command.

So all I need to do is run the script?

Okay it ended with this: make[5]: Entering directory `/home/nico/cadcdev/kos/utils/dc-chain/build-gcc-arm-elf-4.5.2/arm-elf/thumb/libgcc' /bin/bash ../../../../gcc-4.5.2/libgcc/../mkinstalldirs /opt/toolchains/dc/arm-elf/lib/gcc/arm-elf/4.5.2/thumb mkdir -p -- /opt/toolchains/dc/arm-elf/lib/gcc/arm-...

Aha! That shows the issue quite well, actually. The problem is that it didn't build sh-elf-gcc properly, because you were missing a dependency for GCC. Install GMP 4.2 or later, MPFR 2.3.1 or later, and MPC 0.8.0 or later from your system's package manager. Make sure to get the -devel packages too,...

First of all, thanks for all the help. I really appreciate your help BlueCrab. I've tried the new file, and various other things (generally fiddling with the makefile etc). But I still can't get past this error. Everything seems up to date (svn and whatnot). I've flushed the output to a file. EDIT: ...

Okay this is getting pretty frustrating now. Every time I attempt this, it always uses binutils 2.21 instead of 2.22 (if that's worth noting seeing as it seems to be only me with this particular issue) And I'm still stuck at this error: +++ Fixing up sh4 newlib includes... cp /home/nico/cadcdev/kos/...

That worked great, thanks again! EDIT: I got past the last problem, but now another compile issue: cp: accessing `/home/nico/toolchains/dc/sh-elf/sh-elf/include/sys': Not a directory /home/nico/toolchains/ was a path I changed in the makefile, so it's installing to that correctly. It generated the s...

Sorry to be a bother again. the download.sh script outputs this: nico@ubuntu:~/cadcdev/kos/utils/dc-chain$ sh download.sh --2011-12-30 20:13:33-- ftp://ftp.gnu.org/gnu/binutils/binutils-2.21.tar.bz2 => `binutils-2.21.tar.bz2' Resolving ftp.gnu.org... 140.186.70.20 Connecting to ftp.gnu.org|140.186.7...

That page is extremely old and doesn't reflect the current state of things at all, unfortunately. Now that you pointed out that its still there like that, I'll go and get rid of it before anyone else gets confused. :wink: Haha, I had a feeling it was out of date but to what extent I didn't/don't kn...

I have come to burden you all with more problems, sorry lol. I'm trying to get a development environment in Linux working, and still being a noob at all this toolchain/gcc/makefile/repository crap that gets hidden away from me in Windows it's quite frustrating. I'm following instructions from here: ...

Well awesome!
You've all been a *huge* help. I'll see what I can come up with!

I'm still stuck on an Assembler though, Hitachi's site seems long gone. I'm guessing you'd have to write your own -gulp- :( So if anyone has any info on that, much appreciated again! :grin: EDIT: I just had a thought, the KOS development kit comes with GCC ready to compile straight out the box. Does...

Marcus Site. http://mc.pp.se/dc/cpu.html Look at this page you found there everything that you need (programming and hardware manual covers almost everything. after reading it you can even develop your own board on which you can set sh4 processor). Thanks much! That one link is like an encyclopedia...