<\/p>\n
On Cell BE architecture, there are two different types of processor: PowerPC Processing Element (PPE), and\u00a0Synergistic Processing Elements (SPEs). The PPE can run standard PowerPC applications with the general GCC,\u00a0but the SPEs require a special compiler that supports SPE instruction set. In this section, we explore how to build a SPE\u00a0cross-toolchain that will enable you to compile programs for spu-elf architecture.<\/p>\n
Note: OS system should be Fedora 9 on i386 or i686.<\/p>\n
Before we go to build the spu-gcc compiler, we\u00a0need to prepare binutils on the system.\u00a0Commands are as follows:<\/p>\n
===========================================================================
\n1. wget ftp:\/\/ftp.gnu.org\/pub\/gnu\/binutils\/binutils-2.18.tar.gz
\n2. tar zxvf binutils-2.18.tar.gz
\n3. mkdir build\/binutils
\n4. cd build\/binutils
\n5. ..\/..\/binutils-2.18\/configure –disable-werror –prefix=\/home\/your_account_name\/COMPILER\/ –program-prefix=spu-\u00a0–target=spu-elf
\n6. change the “makeinfo” path in the Makefile
\n7. make
\n8. make install
\n9. cd ..\/..
\n===========================================================================<\/p>\n
Note:
\na. You can define the installed directory\u00a0by specifying something like “–prefix=\/wherever_you_want”.
\nb. Now\u00a0add the installed\u00a0path to the\u00a0environment variable.<\/p>\n
Finally, we can try assembling a SPU object:<\/p>\n
echo ‘frest 0,1’ | spu-as –<\/p>\n
– this should complete with no error messages.<\/p>\n
This compiler is a modified version of spu-gcc 4.1.1, which can automatically insert _fci, _fco, _p2s<\/em><\/span> and _s2p<\/span><\/em> library function calls by using flag -llm-manage<\/em>.<\/p>\n 1. Get spu-gcc-4.1.1_0.9\u00a0from here: [<\/strong>SPU-GCC compiler]<\/strong><\/span><\/a><\/span><\/p>\n 2. Put the binary into your Fedora 9<\/p>\n 3. chmod +x spu-gcc<\/p>\n Now that you have a spu-compiler, we can compile newlib. The upstream version 1.15.0 version should work nicely.<\/p>\n ===========================================================================<\/p>\n 1. wget ftp:\/\/sources.redhat.com\/pub\/newlib\/newlib-1.15.0.tar.gz To test, we can try a complete ‘hello world’ program:<\/p>\n echo -e ‘#include <stdio.h>\\nint main(void)’ ‘{printf(“hello world!\\\\n”);return 0;}’ | spu-gcc -Wall -o\/dev\/null\u00a0 -xc –<\/p>\n – this should also complete with no error messages.<\/p>\n The runtime library includes stack data management functions, _fci <\/em>and _fco<\/em>, heap data management functions, _malloc<\/em> and _free<\/em>, and pointer management functions _p2s<\/em> and _s2p<\/em>.<\/p>\n It can be download from here: [<\/strong>Library Code]<\/strong><\/span><\/a><\/span><\/p>\nnewlib<\/h4>\n
\n2. tar zxvf newlib-1.15.0.tar.gz
\n3. mkdir build\/newlib
\n4. cd build\/newlib
\n5. ..\/..\/newlib-1.15.0\/configure –target=spu –prefix=\/home\/your_account_name\/COMPILER\/
\n6. Modify Makefile, make sure the line “MAKEINFOR = ….”, the route is correct. In Fedora 10, it mostly like “\/usr\/bin\/makeinfo”. Or else, use command “locate makeinfo” to find the right path.
\n7. make
\n8. make install
\n===========================================================================<\/p>\nRuntime Library<\/h4>\n
Testsuit<\/h4>\n