Metasepi team meeting #7: Snatch application on tiny OS Metasepi team meeting #7: Snatch application on tiny OS Metasepi team meeting #7: Snatch application on tiny OS Metasepi team meeting #7: Snatch application on tiny OS Metasepi team meeting #7: Snatch application on tiny OS Kiwamu Okabe Kiwamu Okabe Kiwamu Okabe Kiwamu Okabe Kiwamu Okabe
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Metasepi team meeting #7: Snatch application on tiny OS
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Metasepi team meeting #7: Snatch application on tiny OS
Metasepi team meeting #7: Snatch application on tiny OS
Metasepi team meeting #7: Snatch application on tiny OS
Metasepi team meeting #7: Snatch application on tiny OS
Metasepi team meeting #7:Snatch application on tiny OS
☆ Organizer of Metasepi project☆ Organizer of Metasepi project☆ Organizer of Metasepi project☆ Organizer of Metasepi project☆ Organizer of Metasepi project
☆ A developer of Ajhc Haskell compiler☆ A developer of Ajhc Haskell compiler☆ A developer of Ajhc Haskell compiler☆ A developer of Ajhc Haskell compiler☆ A developer of Ajhc Haskell compiler
☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer☆ A Debian Maintainer
☆ 10 years' experience in developing OS using NetBSD.☆ 10 years' experience in developing OS using NetBSD.☆ 10 years' experience in developing OS using NetBSD.☆ 10 years' experience in developing OS using NetBSD.☆ 10 years' experience in developing OS using NetBSD.
☆ [2] What is Ajhc?☆ [2] What is Ajhc?☆ [2] What is Ajhc?☆ [2] What is Ajhc?☆ [2] What is Ajhc?
☆ [3] What is Metasepi?☆ [3] What is Metasepi?☆ [3] What is Metasepi?☆ [3] What is Metasepi?☆ [3] What is Metasepi?
☆ [4] What is compiler to build OS☆ [4] What is compiler to build OS☆ [4] What is compiler to build OS☆ [4] What is compiler to build OS☆ [4] What is compiler to build OS
☆ [5] How to use Ajhc☆ [5] How to use Ajhc☆ [5] How to use Ajhc☆ [5] How to use Ajhc☆ [5] How to use Ajhc
☆ [6] Snatch application on tiny OS☆ [6] Snatch application on tiny OS☆ [6] Snatch application on tiny OS☆ [6] Snatch application on tiny OS☆ [6] Snatch application on tiny OS
☆ RSS reader running on mbed (ARM).☆ RSS reader running on mbed (ARM).☆ RSS reader running on mbed (ARM).☆ RSS reader running on mbed (ARM).☆ RSS reader running on mbed (ARM).
☆ Show reddit articles on LCD display.☆ Show reddit articles on LCD display.☆ Show reddit articles on LCD display.☆ Show reddit articles on LCD display.☆ Show reddit articles on LCD display.
☆ You can watch the movie following.☆ You can watch the movie following.☆ You can watch the movie following.☆ You can watch the movie following.☆ You can watch the movie following.
☆ Jhc outputs binary that has low-memory-footprint and runs fast.☆ Jhc outputs binary that has low-memory-footprint and runs fast.☆ Jhc outputs binary that has low-memory-footprint and runs fast.☆ Jhc outputs binary that has low-memory-footprint and runs fast.☆ Jhc outputs binary that has low-memory-footprint and runs fast.
☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.☆ Good for embedded software.
Why need Ajhc?Why need Ajhc?Why need Ajhc?Why need Ajhc?Why need Ajhc?
☆ GHC is de facto standard on Haskell.☆ GHC is de facto standard on Haskell.☆ GHC is de facto standard on Haskell.☆ GHC is de facto standard on Haskell.☆ GHC is de facto standard on Haskell.
☆ Why need another Haskell compiler?☆ Why need another Haskell compiler?☆ Why need another Haskell compiler?☆ Why need another Haskell compiler?☆ Why need another Haskell compiler?
☆ To develop kernel named "Metasepi".☆ To develop kernel named "Metasepi".☆ To develop kernel named "Metasepi".☆ To develop kernel named "Metasepi".☆ To develop kernel named "Metasepi".
[3] What is Metasepi?[3] What is Metasepi?[3] What is Metasepi?[3] What is Metasepi?[3] What is Metasepi?
☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.☆ Unix-like OS designed by strong type.
☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.☆ Using ML or more strong type lang.
. . . and suchlike.. . . and suchlike.. . . and suchlike.. . . and suchlike.. . . and suchlike.
Why need Metasepi?Why need Metasepi?Why need Metasepi?Why need Metasepi?Why need Metasepi?
☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.☆ We have already Linux or Windows.
☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.☆ But the developers are suffering.
☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,☆ If use the kernel changed by you,
☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.☆ you will get many runtime error.
☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.☆ Difficult even to reproduce it.
Doesn't OSS have good quality?Doesn't OSS have good quality?Doesn't OSS have good quality?Doesn't OSS have good quality?Doesn't OSS have good quality?
☆ "The Cathedral and the Bazaar"☆ "The Cathedral and the Bazaar"☆ "The Cathedral and the Bazaar"☆ "The Cathedral and the Bazaar"☆ "The Cathedral and the Bazaar"
☆ "Given enough eyeballs, all bugs are shallow."☆ "Given enough eyeballs, all bugs are shallow."☆ "Given enough eyeballs, all bugs are shallow."☆ "Given enough eyeballs, all bugs are shallow."☆ "Given enough eyeballs, all bugs are shallow."http://cruel.org/freeware/cathedral.htmlhttp://cruel.org/freeware/cathedral.htmlhttp://cruel.org/freeware/cathedral.htmlhttp://cruel.org/freeware/cathedral.htmlhttp://cruel.org/freeware/cathedral.html
☆ But if you develop your own product reusing OSS...☆ But if you develop your own product reusing OSS...☆ But if you develop your own product reusing OSS...☆ But if you develop your own product reusing OSS...☆ But if you develop your own product reusing OSS...
Low quality out of OSS umbrellaLow quality out of OSS umbrellaLow quality out of OSS umbrellaLow quality out of OSS umbrellaLow quality out of OSS umbrella
Type safetyType safetyType safetyType safetyType safety
☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.☆ Less runtime errors.
☆ Kernels are developed with C lang.☆ Kernels are developed with C lang.☆ Kernels are developed with C lang.☆ Kernels are developed with C lang.☆ Kernels are developed with C lang.
☆ Error on user space => SEGV☆ Error on user space => SEGV☆ Error on user space => SEGV☆ Error on user space => SEGV☆ Error on user space => SEGV
☆ Error on kernel space => halt!☆ Error on kernel space => halt!☆ Error on kernel space => halt!☆ Error on kernel space => halt!☆ Error on kernel space => halt!
☆ Should design kernel with the greatest care.☆ Should design kernel with the greatest care.☆ Should design kernel with the greatest care.☆ Should design kernel with the greatest care.☆ Should design kernel with the greatest care.
☆ C language is safe?☆ C language is safe?☆ C language is safe?☆ C language is safe?☆ C language is safe?
[4] What is compiler to build OS[4] What is compiler to build OS[4] What is compiler to build OS[4] What is compiler to build OS[4] What is compiler to build OS
☆ Need strong type.☆ Need strong type.☆ Need strong type.☆ Need strong type.☆ Need strong type.
☆ Need flexibility such as C language.☆ Need flexibility such as C language.☆ Need flexibility such as C language.☆ Need flexibility such as C language.☆ Need flexibility such as C language.
☆ Create it if there are not!☆ Create it if there are not!☆ Create it if there are not!☆ Create it if there are not!☆ Create it if there are not!
☆ From scratch? No thank you...☆ From scratch? No thank you...☆ From scratch? No thank you...☆ From scratch? No thank you...☆ From scratch? No thank you...
☆ Look for our compiler base.☆ Look for our compiler base.☆ Look for our compiler base.☆ Look for our compiler base.☆ Look for our compiler base.
Programs to print "hoge" on terminal.Programs to print "hoge" on terminal.Programs to print "hoge" on terminal.Programs to print "hoge" on terminal.Programs to print "hoge" on terminal.
The lesser depends on POSIX, the smaller values.The lesser depends on POSIX, the smaller values.The lesser depends on POSIX, the smaller values.The lesser depends on POSIX, the smaller values.The lesser depends on POSIX, the smaller values.
Jhc output has only 20 undefJhc output has only 20 undefJhc output has only 20 undefJhc output has only 20 undefJhc output has only 20 undef$ nm hs.out | grep "U " U _IO_putc@@GLIBC_2.2.5 U __libc_start_main@@GLIBC_2.2.5 U _setjmp@@GLIBC_2.2.5 U abort@@GLIBC_2.2.5 U ctime@@GLIBC_2.2.5 U exit@@GLIBC_2.2.5 U fflush@@GLIBC_2.2.5 U fprintf@@GLIBC_2.2.5 U fputc@@GLIBC_2.2.5 U fputs@@GLIBC_2.2.5 U free@@GLIBC_2.2.5 U fwrite@@GLIBC_2.2.5 U getenv@@GLIBC_2.2.5 U malloc@@GLIBC_2.2.5 U memset@@GLIBC_2.2.5 U posix_memalign@@GLIBC_2.2.5 U realloc@@GLIBC_2.2.5 U setlocale@@GLIBC_2.2.5 U sysconf@@GLIBC_2.2.5 U times@@GLIBC_2.2.5
$ nm hs.out | grep "U " U _IO_putc@@GLIBC_2.2.5 U __libc_start_main@@GLIBC_2.2.5 U _setjmp@@GLIBC_2.2.5 U abort@@GLIBC_2.2.5 U ctime@@GLIBC_2.2.5 U exit@@GLIBC_2.2.5 U fflush@@GLIBC_2.2.5 U fprintf@@GLIBC_2.2.5 U fputc@@GLIBC_2.2.5 U fputs@@GLIBC_2.2.5 U free@@GLIBC_2.2.5 U fwrite@@GLIBC_2.2.5 U getenv@@GLIBC_2.2.5 U malloc@@GLIBC_2.2.5 U memset@@GLIBC_2.2.5 U posix_memalign@@GLIBC_2.2.5 U realloc@@GLIBC_2.2.5 U setlocale@@GLIBC_2.2.5 U sysconf@@GLIBC_2.2.5 U times@@GLIBC_2.2.5
$ nm hs.out | grep "U " U _IO_putc@@GLIBC_2.2.5 U __libc_start_main@@GLIBC_2.2.5 U _setjmp@@GLIBC_2.2.5 U abort@@GLIBC_2.2.5 U ctime@@GLIBC_2.2.5 U exit@@GLIBC_2.2.5 U fflush@@GLIBC_2.2.5 U fprintf@@GLIBC_2.2.5 U fputc@@GLIBC_2.2.5 U fputs@@GLIBC_2.2.5 U free@@GLIBC_2.2.5 U fwrite@@GLIBC_2.2.5 U getenv@@GLIBC_2.2.5 U malloc@@GLIBC_2.2.5 U memset@@GLIBC_2.2.5 U posix_memalign@@GLIBC_2.2.5 U realloc@@GLIBC_2.2.5 U setlocale@@GLIBC_2.2.5 U sysconf@@GLIBC_2.2.5 U times@@GLIBC_2.2.5
$ nm hs.out | grep "U " U _IO_putc@@GLIBC_2.2.5 U __libc_start_main@@GLIBC_2.2.5 U _setjmp@@GLIBC_2.2.5 U abort@@GLIBC_2.2.5 U ctime@@GLIBC_2.2.5 U exit@@GLIBC_2.2.5 U fflush@@GLIBC_2.2.5 U fprintf@@GLIBC_2.2.5 U fputc@@GLIBC_2.2.5 U fputs@@GLIBC_2.2.5 U free@@GLIBC_2.2.5 U fwrite@@GLIBC_2.2.5 U getenv@@GLIBC_2.2.5 U malloc@@GLIBC_2.2.5 U memset@@GLIBC_2.2.5 U posix_memalign@@GLIBC_2.2.5 U realloc@@GLIBC_2.2.5 U setlocale@@GLIBC_2.2.5 U sysconf@@GLIBC_2.2.5 U times@@GLIBC_2.2.5
$ nm hs.out | grep "U " U _IO_putc@@GLIBC_2.2.5 U __libc_start_main@@GLIBC_2.2.5 U _setjmp@@GLIBC_2.2.5 U abort@@GLIBC_2.2.5 U ctime@@GLIBC_2.2.5 U exit@@GLIBC_2.2.5 U fflush@@GLIBC_2.2.5 U fprintf@@GLIBC_2.2.5 U fputc@@GLIBC_2.2.5 U fputs@@GLIBC_2.2.5 U free@@GLIBC_2.2.5 U fwrite@@GLIBC_2.2.5 U getenv@@GLIBC_2.2.5 U malloc@@GLIBC_2.2.5 U memset@@GLIBC_2.2.5 U posix_memalign@@GLIBC_2.2.5 U realloc@@GLIBC_2.2.5 U setlocale@@GLIBC_2.2.5 U sysconf@@GLIBC_2.2.5 U times@@GLIBC_2.2.5
Jhc is translator to C languageJhc is translator to C languageJhc is translator to C languageJhc is translator to C languageJhc is translator to C language
Easy to cross buildEasy to cross buildEasy to cross buildEasy to cross buildEasy to cross build
Let's develop in dogfooding style. (The method is called "Snatch".)Let's develop in dogfooding style. (The method is called "Snatch".)Let's develop in dogfooding style. (The method is called "Snatch".)Let's develop in dogfooding style. (The method is called "Snatch".)Let's develop in dogfooding style. (The method is called "Snatch".)
[5] How to use Ajhc[5] How to use Ajhc[5] How to use Ajhc[5] How to use Ajhc[5] How to use Ajhc
Case of Ubuntu 12.04 amd64.Case of Ubuntu 12.04 amd64.Case of Ubuntu 12.04 amd64.Case of Ubuntu 12.04 amd64.Case of Ubuntu 12.04 amd64.$ sudo apt-get install haskell-platform libncurses5-dev gcc m4$ cabal update$ export PATH=$HOME/.cabal/bin/:$PATH$ cabal install ajhc$ which ajhc/home/USER/.cabal/bin/ajhc$ echo 'main = print "hoge"' > Hoge.hs$ ajhc Hoge.hs$ ./hs.out"hoge"
You can use on Windows or Mac OS X.You can use on Windows or Mac OS X.You can use on Windows or Mac OS X.You can use on Windows or Mac OS X.You can use on Windows or Mac OS X.
Detail of usageDetail of usageDetail of usageDetail of usageDetail of usage
[6] Snatch application on tiny OS[6] Snatch application on tiny OS[6] Snatch application on tiny OS[6] Snatch application on tiny OS[6] Snatch application on tiny OS
Snatch only the LED blinker thread.Snatch only the LED blinker thread.Snatch only the LED blinker thread.Snatch only the LED blinker thread.Snatch only the LED blinker thread.
The source code at the following.The source code at the following.The source code at the following.The source code at the following.The source code at the following.
Blink LED only once #1Blink LED only once #1Blink LED only once #1Blink LED only once #1Blink LED only once #1-- File: hs_src/Main.hsforeign export ccall "blinkOrange" blinkOrange :: IO ()blinkOrange :: IO ()blinkOrange = do c_palSetPad c_GPIOD c_GPIOD_LED3 c_chThdSleepMilliseconds 500 c_palClearPad c_GPIOD c_GPIOD_LED3 c_chThdSleepMilliseconds 500
Use forkOS API #1Use forkOS API #1Use forkOS API #1Use forkOS API #1Use forkOS API #1-- File: hs_src/Main.hsmain :: IO ()main = void $ forkOS threadBlinkOrange
☆ Fanzine of functional programming.☆ Fanzine of functional programming.☆ Fanzine of functional programming.☆ Fanzine of functional programming.☆ Fanzine of functional programming.
☆ About Haskell or OCaml or . . .☆ About Haskell or OCaml or . . .☆ About Haskell or OCaml or . . .☆ About Haskell or OCaml or . . .☆ About Haskell or OCaml or . . .
☆ Article about Ajhc in C84 book.☆ Article about Ajhc in C84 book.☆ Article about Ajhc in C84 book.☆ Article about Ajhc in C84 book.☆ Article about Ajhc in C84 book.
☆ Call me if you read it!☆ Call me if you read it!☆ Call me if you read it!☆ Call me if you read it!☆ Call me if you read it!http://www.paraiso-lang.org/ikmsm/books/c85.htmlhttp://www.paraiso-lang.org/ikmsm/books/c85.htmlhttp://www.paraiso-lang.org/ikmsm/books/c85.htmlhttp://www.paraiso-lang.org/ikmsm/books/c85.htmlhttp://www.paraiso-lang.org/ikmsm/books/c85.html