Raspberry PI 4 –ийг ажиллуулах Bare Metal C Programming аргачлал холбоотой хөгжүүлэлтийн орчиныг бүрдүүлэхэд тухай судалж үзэцгээе. http://agrielectronic.com/

Одоогын хөгжүүлэлтийн орчин нь Ubuntu 18.04 LTS орчинд хийх болно. Raspberry PI 4 нь Ubuntu 18.04 LTS орчинд баг зэрэг алдаанууд гарч ирнэ. Шалтгаан нь Raspberry PI 4 нь 2018 он, 2019 онд бүтээгдсэн болохоор хөгжүүлэлтийн програм хангамжууд нь Ubuntu 18 хэрэглэхээр зохицуулагдсан, тиймээс програм пакетууд нь Ubuntu 16.04 LTS дээр ажиллахгүй байгаатай холбоотой юм. http://agrielectronic.com/

Жишээлбэл дараахтай адил Raspberry Pi Imager нь Ubuntu 16.04 LTS дээр ажиллахгүй. http://agrielectronic.com/

Зураг1. Суурилуулалтын эхлэлийн зураг

Эхлээд Barametal тай холбоотой C Program эх код нь Raspberry PI 3-д зориулсан тэрхүү агуулгын хүрээнд орчиныг бүрдүүлэх болно. Raspberry PI 3-д тохируулсан эх код нь https://github.com/bztsrc/raspi3-tutorial линк дээрээс жишээнүүдийг 00_crosscompiler доторхи агуулга нь ARM 64 bit кросскомпайлерийг тохируулах жишээ c-program компайл хийж үзсэн. http://agrielectronic.com/

Зураг2. Raspberry PI 3-ийн жишээ програмууд

Raspberry PI 3 болон Raspberry Pi 4 –уудын санах ойн хуваарилалт (memory mapping) хэрхэн ялгаатайг олж үзье гэвэл Raspberry Pi 4 –ийн Kernel Source дотор байгаа төхөөрөмж модны бүтэцийг (device tree) сайн аналуз хийж үзвэл, оролт гаралтын интерфейсүүд (Peripheral) хамааралттай хэсэг виртуал хаягууд болох 0x3F00-0000 ~ 0xFE00-000 солигдсоныг мэдэж болно. Тухайлбал GPIO.h файлыг засах өөрчлөх шаардлагатай. http://agrielectronic.com/

Дараахь мэдээлэлийг нэмэлт материал байдлаар орууллаа. 00_crosscompiler фолдер дотор байгаа README.md файлын агуулаг болно. Энэхүү нэмэлт материал нь CrossCompiler –ыг хэрхэн тохируулах тайлбарласан. http://agrielectronic.com/

AArch64 Cross Compiler

Before we could start our tutorials, you'll need some tools. Namely a compiler that compiles for the AArch64 architecture and it's companion utilities. http://agrielectronic.com/

IMPORTANT NOTE: this description is not about how to compile a cross-compiler in general. It's about how to compile one specifically for the aarch64-elf target. If you have problems, google "how to build a gcc cross-compiler" or ask on an appropriate support forum for your operating system. I can't and won't help you with your environment, you have to solve that on your own. As I've said in the introduction I assume you know how to compile programs (including the compilation of the cross-compiler). http://agrielectronic.com/

Each directory has two Makefiles, one for the GNU gcc, and one for LLVM clang. Pick the one you prefer. I could have used makefile variables and a common configuration, but it was important that each tutorial must be self-contained and dependency-free.

LLVM Compiler and Linker

Clang by design is a cross-compiler, therefore you don't have to build a special version of it like with gcc. For some (probably archaical) reason the corresponding linker uses a different target (no '-' in it), keep that in mind. http://agrielectronic.com/

clang --target=aarch64-elf

ld.lld -m aarch64elf

Also note that you'll need other tools. You can find llvm-objcopy here.

Build system

To orchestrate compilation, we'll use GNU make. No need for cross-compiling this, as we are about to use it on the host computer only, and not on the target machine. The reason I choosed this build system for the tutorials is that GNU make is also required to compile the GNU compiler, so you'll need it anyway. http://agrielectronic.com/

Download and unpack sources

First of all, download binutils and gcc sources. In this example I've used the latest versions as of writing. You are advised to check the mirrors and modify filenames accordly.

wget https://ftpmirror.gnu.org/binutils/binutils-2.30.tar.gz

wget https://ftpmirror.gnu.org/gcc/gcc-8.1.0/gcc-8.1.0.tar.gz

wget https://ftpmirror.gnu.org/mpfr/mpfr-4.0.1.tar.gz

wget https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.bz2

wget https://ftpmirror.gnu.org/mpc/mpc-1.1.0.tar.gz

wget https://gcc.gnu.org/pub/gcc/infrastructure/isl-0.18.tar.bz2

wget https://gcc.gnu.org/pub/gcc/infrastructure/cloog-0.18.1.tar.gz

If you want to verify the downloads, you can also download the checksums and signatures:

wget https://ftpmirror.gnu.org/binutils/binutils-2.30.tar.gz.sig

wget https://ftpmirror.gnu.org/gcc/gcc-8.1.0/gcc-8.1.0.tar.gz.sig

wget https://ftpmirror.gnu.org/mpfr/mpfr-4.0.1.tar.gz.sig

wget https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.bz2.sig

wget https://ftpmirror.gnu.org/mpc/mpc-1.1.0.tar.gz.sig

wget https://gcc.gnu.org/pub/gcc/infrastructure/sha512.sum

Once the download finished, verify the downloads by running:

sha512sum -c sha512.sum --ignore-missing

for i in *.sig; do gpg2 --auto-key-retrieve --verify-files "${i}"; done

The first command should say 'OK' for isl and cloog, the second should say 'Good signature' for the other files.

Then unpack the tarballs with these commands:

for i in *.tar.gz; do tar -xzf $i; done

for i in *.tar.bz2; do tar -xjf $i; done

Remove the files, we don't need anymore:

rm -f *.tar.* sha512.sum

You'll need some symbolic links before you could start the compilation, so let's create them:

cd binutils-*

ln -s ../isl-* isl

cd ..

cd gcc-*

ln -s ../isl-* isl

ln -s ../mpfr-* mpfr

ln -s ../gmp-* gmp

ln -s ../mpc-* mpc

ln -s ../cloog-* cloog

cd ..

Compiling the sources

Okay, now we have to build two packages. One is called binutils, which includes linker, assembler and other useful commands. http://agrielectronic.com/

mkdir aarch64-binutils

cd aarch64-binutils

../binutils-*/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j4

make install

cd ..

The first argument tells the configure script to install the build in /usr/local/cross-compiler. The second specifies the target architecture, for which we want the tools to be compiled. The other arguments turn specific options on and off, don't bother. It's enough to know they are appropriately tweeked for an embedded system compiler.

And the second package, of course we'll need the gcc compiler itself.

mkdir aarch64-gcc

cd aarch64-gcc

../gcc-*/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf --enable-languages=c \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j4 all-gcc

make install-gcc

cd ..

Here we specify the same directory and architecture as before. We also tell to compile only the C compiler, as gcc otherwise would support tons of languages we don't need. This reduces the compilation time significantly. The remaining arguments are the same as with binutils. http://agrielectronic.com/

Now check bin folder in your /usr/local/cross-compiler directory. You should see a lot of executables there. You probably also want to add this directory to your PATH environment variable. http://agrielectronic.com/

$ ls /usr/local/cross-compiler/bin

aarch64-elf-addr2line aarch64-elf-elfedit aarch64-elf-gcc-ranlib aarch64-elf-ld aarch64-elf-ranlib

aarch64-elf-ar aarch64-elf-gcc aarch64-elf-gcov aarch64-elf-ld.bfd aarch64-elf-readelf

aarch64-elf-as aarch64-elf-gcc-7.2.0 aarch64-elf-gcov-dump aarch64-elf-nm aarch64-elf-size

aarch64-elf-c++filt aarch64-elf-gcc-ar aarch64-elf-gcov-tool aarch64-elf-objcopy aarch64-elf-strings

aarch64-elf-cpp aarch64-elf-gcc-nm aarch64-elf-gprof aarch64-elf-objdump aarch64-elf-strip

The executables we are interested in:

· aarch64-elf-as - the assembler

· aarch64-elf-gcc - the C compiler

· aarch64-elf-ld - the linker

· aarch64-elf-objcopy - to convert ELF executable into IMG format

· aarch64-elf-objdump - utility to disassemble executables (for debugging)

· aarch64-elf-readelf - an useful utility to dump sections and segments in executables (for debugging)

If you have all of the above six executables and you can also run them without error messages, congrats! You have all the tools needed, you can start to work with my tutorials!

///////////////////////////////////////

home/wcham фолдер дотор ажлын фолдер болох RaspBareMetal –г үүсгэнэ.

Энд дараахтай адил коммандаар binutils болон gcc тэй холбоотой эх кодуудыг татаж авна. Миний хувьд ham1.sh файл үүсгээд ажиллуулсан.

#HAM binutils, gcc эх кодуудыг татаж авна. http://agrielectronic.com/

wget https://ftpmirror.gnu.org/binutils/binutils-2.30.tar.gz

wget https://ftpmirror.gnu.org/gcc/gcc-8.1.0/gcc-8.1.0.tar.gz

wget https://ftpmirror.gnu.org/mpfr/mpfr-4.0.1.tar.gz

wget https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.bz2

wget https://ftpmirror.gnu.org/mpc/mpc-1.1.0.tar.gz

wget https://gcc.gnu.org/pub/gcc/infrastructure/isl-0.18.tar.bz2

Одоо дараах командуудыг ажиллуулснаар “check sum” болон “signature” холбоотой файлуудын татаж авсан байдлыг шалгахад хэрэглэнэ.

http://agrielectronic.com/

wget https://ftpmirror.gnu.org/binutils/binutils-2.30.tar.gz.sig

wget https://ftpmirror.gnu.org/gcc/gcc-8.1.0/gcc-8.1.0.tar.gz.sig

wget https://ftpmirror.gnu.org/mpfr/mpfr-4.0.1.tar.gz.sig

wget https://ftpmirror.gnu.org/gmp/gmp-6.1.2.tar.bz2.sig

wget https://ftpmirror.gnu.org/mpc/mpc-1.1.0.tar.gz.sig

wget https://gcc.gnu.org/pub/gcc/infrastructure/sha512.sum

Дээрхи үйлдлүүдийг хялбар хийхийн тулд ham2.sh файл үүсгээд ажиллуулсан.

Одоо дараах командыг ажилуулан татаж авсан файлыг шалгана. Энэ тохиолдолд ч гэсэн ham3.sh файл үүсгээд ажилуулсан.

http://agrielectronic.com/

Энэ үед gpg2 команд ажилаагүй учраас дараах үйлдлийг хийсэн

sudo apt install gnupg2

Ингээд ham3.sh нь ажиллуулна. Файл тус бүрийн Signature –г шалгана. Дараах хийгдсэн агуулгын нэг хэсэг юм.

http://agrielectronic.com/

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

gpg: Good signature from "Andreas Enge <andreas@enge.fr>" [unknown]

gpg: aka "Andreas Enge <andreas.enge@inria.fr>" [unknown]

gpg: WARNING: This key is not certified with a trusted signature!

gpg: There is no indication that the signature belongs to the owner.

Primary key fingerprint: AD17 A21E F8AE D8F1 CC02 DBD9 F7D5 C9BF 765C 61E3

gpg: assuming signed data in 'mpfr-4.0.1.tar.gz'

gpg: Signature made 2018년 02월 08일 (목)

gpg: using DSA key 07F3DBBECC1A39605078094D980C197698C3739D

gpg: key 980C197698C3739D: 24 signatures not checked due to missing keys

gpg: key 980C197698C3739D: public key "Vincent Lefevre <vincent@vinc17.net>" imported

gpg: no ultimately trusted keys found

gpg: Total number processed: 1

gpg: imported: 1

gpg: Good signature from "Vincent Lefevre <vincent@vinc17.net>" [unknown]

gpg: aka "Vincent Lefevre <vincent@vinc17.org>" [unknown]

gpg: aka "Vincent Lefèvre <vincent@vinc17.net>" [unknown]

gpg: aka "Vincent Lefèvre <vincent@vinc17.org>" [unknown]

gpg: aka "Vincent Lefevre <Vincent.Lefevre@inria.fr>" [unknown]

gpg: aka "Vincent Lefèvre <Vincent.Lefevre@inria.fr>" [unknown]

gpg: aka "Vincent Lefevre <Vincent.Lefevre@ens-lyon.fr>" [unknown]

gpg: aka "Vincent Lefèvre <Vincent.Lefevre@ens-lyon.fr>" [unknown]

gpg: WARNING: This key is not certified with a trusted signature!

gpg: There is no indication that the signature belongs to the owner.

Primary key fingerprint: 07F3 DBBE CC1A 3960 5078 094D 980C 1976 98C3 739D

wcham@wcham-C7Z270-CG:~/RaspBareMetal$

////////////////////////////////////////////////////////////////////////////////////////////////

Одоо дараах командыг ажилуулан файлуудыг задлана. Энэ үйлдлийг ч бас ham4.sh –г үүсгээд хийсэн.

Одоо дараахтай адил Symbolic link хийх шаардлагатай бол доорхитой адил хийнэ.

cd binutils-*

ln -s ../isl-* isl

cd ..

cd gcc-*

ln -s ../isl-* isl

ln -s ../mpfr-* mpfr

ln -s ../gmp-* gmp

ln -s ../mpc-* mpc

ln -s ../cloog-* cloog

cd ..

Дээрхи бичилтээс “*” нь хувилбартай холбоотой хэрэглэнэ.

binutils-* → binutils-2.30

isl-* → isl-0.18

gcc-* → gcc-8.1.0

isl-* → isl-0.18

mpfr-* → mpfr-4.0.1

gmp-* → gmp-6.1.2

mpc-* → mpc-1.1.0

cloog-* → cloog-0.18.1

http://agrielectronic.com/

Энэ үйлдлүүдийг ham5.sh үүсгээд хийсэн болно. http://agrielectronic.com/

Одоо дараах адил aarch64-binutils фолдер нэгийг үүсгээд, тэнд нь дараахтай адил бичээд ажилуулна. http://agrielectronic.com/

mkdir aarch64-binutils

cd aarch64-binutils

../binutils-*/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j4

make install

cd ..

Дээрхийг дараахтай адилаар солионо.

mkdir aarch64-binutils

cd aarch64-binutils

../binutils-2.30/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j8

make install

cd .

Эндээс binutils-* нь binutils-2.30 –ийг хувилбараар хэрэглэнэ..

Make командыг ажилуулбал дараахтай адил алдаа гарсан.

configure: error: gmp.h header not found

yes

…

onfig.status: executing default commands

make[1]: Leaving directory '/home/wcham/RaspBareMetal/aarch64-binutils'

Makefile:850: recipe for target 'all' failed

make: *** [all] Error 2

Гэсэн хэдийч асуудлууд гарч ирээд асаж янзлах ажилууд байна.

Make install

Энэ командын хувьд “Permission Error” гараад “sudo” командыг дахиад хэрэглэх шаардлага гарна.

sudo make install

http://agrielectronic.com/

Одоо дараах “gcc” –тэй холбоотой ажиллыг хийж үзье.

mkdir aarch64-gcc

cd aarch64-gcc

../gcc-*/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf --enable-languages=c \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j4 all-gcc

make install-gcc

cd ..

Магадгүй энд “gcc-* нь gcc-8.1.0- г хэрэглэсэн. Яг хэрэглэсэн бичилт нь дараахьтай адил болно.

mkdir aarch64-gcc

cd aarch64-gcc

../gcc-8.1.0/configure --prefix=/usr/local/cross-compiler --target=aarch64-elf --enable-languages=c \

--enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit \

--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-plugin \

--disable-linker-build-id --enable-lto --enable-install-libiberty --with-linker-hash-style=gnu --with-gnu-ld\

--enable-gnu-indirect-function --disable-multilib --disable-werror --enable-checking=release --enable-default-pie \

--enable-default-ssp --enable-gnu-unique-object

make -j8 all-gcc

sudo make install-gcc

cd ..

Дээрхээс “make -j8” команд нь дараахтай адил “thread” тэй холбоотой алдаа гарсан.

http://agrielectronic.com/

///////////////////////

./gthr-default.h:35:10: fatal error: pthread.h: No such file or directory

#include <pthread.h>

^~~~~~~~~~~

compilation terminated.

../../../gcc-8.1.0/libgcc/static-object.mk:17: recipe for target 'unwind-dw2-fde.o' failed

make[2]: *** [unwind-dw2-fde.o] Error 1

make[2]: *** Waiting for unfinished jobs....

../../../gcc-8.1.0/libgcc/static-object.mk:17: recipe for target 'unwind-dw2.o' failed

make[2]: *** [unwind-dw2.o] Error 1

In file included from ../../../gcc-8.1.0/libgcc/gthr.h:148,

from ../../../gcc-8.1.0/libgcc/unwind-sjlj.c:31:

./gthr-default.h:35:10: fatal error: pthread.h: No such file or directory

#include <pthread.h>

^~~~~~~~~~~

compilation terminated.

../../../gcc-8.1.0/libgcc/static-object.mk:17: recipe for target 'unwind-sjlj.o' failed

make[2]: *** [unwind-sjlj.o] Error 1

In file included from ../../../gcc-8.1.0/libgcc/gthr.h:148,

from ../../../gcc-8.1.0/libgcc/emutls.c:31:

./gthr-default.h:35:10: fatal error: pthread.h: No such file or directory

#include <pthread.h>

^~~~~~~~~~~

compilation terminated.

../../../gcc-8.1.0/libgcc/static-object.mk:17: recipe for target 'emutls.o' failed

make[2]: *** [emutls.o] Error 1

libtool: link: g++ -fPIC -DPIC -shared -nostdlib /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/7/crtbeginS.o .libs/libcp1plugin.o .libs/callbacks.o .libs/connection.o .libs/marshall.o -L/usr/lib/gcc/x86_64-linux-gnu/7 -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/7/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/7/../../.. -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/x86_64-linux-gnu/7/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crtn.o -static-libstdc++ -static-libgcc ../libiberty/pic/libiberty.a -Wl,-soname -Wl,libcp1plugin.so.0 -Wl,-retain-symbols-file -Wl,../../gcc-8.1.0/libcc1/libcp1plugin.sym -o .libs/libcp1plugin.so.0.0.0

make[2]: Leaving directory '/home/wcham/RaspBareMetal/aarch64-gcc/aarch64-elf/libgcc'

Makefile:12956: recipe for target 'all-target-libgcc' failed

make[1]: *** [all-target-libgcc] Error 2

make[1]: *** Waiting for unfinished jobs....

libtool: link: (cd ".libs"&& rm -f "libcp1plugin.so.0"&& ln -s "libcp1plugin.so.0.0.0""libcp1plugin.so.0")

libtool: link: (cd ".libs"&& rm -f "libcp1plugin.so"&& ln -s "libcp1plugin.so.0.0.0""libcp1plugin.so")

libtool: link: ( cd ".libs"&& rm -f "libcp1plugin.la"&& ln -s "../libcp1plugin.la""libcp1plugin.la" )

make[3]: Leaving directory '/home/wcham/RaspBareMetal/aarch64-gcc/libcc1'

make[2]: Leaving directory '/home/wcham/RaspBareMetal/aarch64-gcc/libcc1'

make[1]: Leaving directory '/home/wcham/RaspBareMetal/aarch64-gcc'

Makefile:891: recipe for target 'all' failed

make: *** [all] Error 2

///////////////////////////////

emutls.so файлыг үүсгэж чадахгүй гэсэн алдаа гарч ирсэн.

http://agrielectronic.com/

Жаахан ажиглаад үзвэл “make install all-gcc” –г ажилуулах ёстой байсан ч буруу команд “make -j8” ажилуулсан.

Тэгээд дахиад “make install all-gcc” –г ажилуулахад ямарч асуудал байхгүй болсон.

http://agrielectronic.com/

Одоо

“sudo make install-gcc”-г ажилуулана. Ажилуулахад ямарч асуудалгүй болох дараах зурагаас харж болох юм.

Одоо бүх зүйл амжилттай болбол “/usr/local/cross-compiler/bin” фолдер дотор “64bit arm” –тай холбоотой “compiler, linker” –ууд нь бүгд үүссэн болох харж болно.

http://agrielectronic.com/

Дараах нь дээр хийсэн ажилын үр дүн юм. http://agrielectronic.com/

Компайлдаад ажилууд амжилттай болсныг дараах командыг ажилуулаад шалгаж үзэж болно.

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-as --version

GNU assembler (GNU Binutils) 2.30

This program is free software; you may redistribute it under the terms of

the GNU General Public License version 3 or later.

This program has absolutely no warranty.

This assembler was configured for a target of `aarch64-elf'.

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$

http://agrielectronic.com/

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-gcc --version

aarch64-elf-gcc (GCC) 8.1.0

This is free software; see the source for copying conditions. There is NO

warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-ld --version

GNU ld (GNU Binutils) 2.30

This program is free software; you may redistribute it under the terms of

the GNU General Public License version 3 or (at your option) a later version.

This program has absolutely no warranty

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-objcopy --version

GNU objcopy (GNU Binutils) 2.30

This program is free software; you may redistribute it under the terms of

the GNU General Public License version 3 or (at your option) any later version.

This program has absolutely no warranty.

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-objdump --version

GNU objdump (GNU Binutils) 2.30

This program is free software; you may redistribute it under the terms of

the GNU General Public License version 3 or (at your option) any later version.

This program has absolutely no warranty.

wcham@wcham-C7Z270-CG:/usr/local/cross-compiler/bin$ ./aarch64-elf-readelf --version

GNU readelf (GNU Binutils) 2.30

This program is free software; you may redistribute it under the terms of

the GNU General Public License version 3 or (at your option) any later version.

This program has absolutely no warranty.

http://agrielectronic.com/

Одоо энэ түүлийг(tool) ашиглаад ажилладаг програмууд(executable program) үүсгэж үзэцгээе.

http://agrielectronic.com/

Нэмэлт материал:

[1] https://github.com/bztsrc/raspi3-tutorial

Welcome to ISOBUS

Sunday, April 26, 2020

Bare Metal C Programming аргачлалтай холбоотой хөгжүүлэлтийн орчин бүрдүүлэх

AArch64 Cross Compiler

LLVM Compiler and Linker

Build system

Download and unpack sources

Compiling the sources