good5dog5

arm-linux-gnueabihf-gcc -c -O2 -ggdb -Wall -fno-stack-protector -o example2.o example2.c
arm-linux-gnueabihf-as -o multiply.o multiply.s
multiply.s: Assembler messages:
multiply.s:12: Rd and Rm should be different in mla
arm-linux-gnueabihf-gcc -o example2 example2.o multiply.o
qemu-arm -L /usr/arm-linux-gnueabihf ./example2
a * b is 140
a * b + c is 143
c - a * b is -137

good5dog5

# Some pre-defined variables of make
# 
#	  $? - updated  dependencies
#	  $@ - target value
#	  $< - first dependencie
#	  $^ - all dependencies, seperated with space
#	  $* - target name without extension
#	  
CC	= arm-linux-gnueabihf-gcc
AS	= arm-linux-gnueabihf-as

good5dog5

	.syntax unified
	.arch armv7-a
	.text
	.align 2
	.thumb
	.thumb_func

   .global fibonacci
	.type fibonacci, function

good5dog5

	.syntax unified
	.arch armv7-a
	.text
	.align 2
	.thumb
	.thumb_func

        .global fibonacci
	.type fibonacci, function

good5dog5

    #define MKCL(n, d) {.name=#n, .fptr=n ## _command, .desc=d}

    cmdlist cl[]={

            MKCL(ls, "List directory"),

            MKCL(man, "Show the manual of the command"),

            MKCL(cat, "Concatenate files and print on the stdout"),

good5dog5

mkdir -p workspace
cd workspace
git clone git://github.com/beckus/stm32_p103_demos.git || git clone https://github.com/beckus/stm32_p103_demos.git 
git clone git://github.com/beckus/qemu_stm32.git || git clone https://github.com/beckus/qemu_stm32.git

cd qemu_stm32
git submodule update --init dtc || sudo apt-get install libfdt-dev
./configure --disable-werror --enable-debug \
    --target-list="arm-softmmu" \
    --extra-cflags=-DSTM32_UART_NO_BAUD_DELAY \

good5dog5

    cd ~/workspace
    git clone git@github.com:embedded2015/freertos-basic.git
    # 或者: git clone https://github.com/embedded2015/freertos-basic.git
    cd freertos-basic
    make
    make qemu
    輸入 “help” 可見已實作的 shell command
        ps
        mmtest

good5dog5

#include<stdio.h>
struct ABC {
    int index;
    char name[6];
    int score;
} __attribute__((packed));;

struct DEF {
    int att;
    char name[3];

good5dog5

void fibo_command(int n, char *argv[]) {
    int i = 0;
    int first = 0;
    int second = 1;
    int result;

    fio_printf(1, "\r\n");

    if(n == 1) {
        fio_printf(1, "Please assign a number \r\n");

good5dog5

void vTaskStartScheduler( void )
{
    portBASE_TYPE xReturn;

	/* Add the idle task at the lowest priority. */
	#if ( INCLUDE_xTaskGetIdleTaskHandle == 1 )
	{
		/* Create the idle task, storing its handle in xIdleTaskHandle so it can
		be returned by the xTaskGetIdleTaskHandle() function. */
		xReturn = xTaskCreate( prvIdleTask, ( signed char * ) "IDLE", tskIDLE_STACK_SIZE, ( void * ) NULL, ( tskIDLE_PRIORITY | portPRIVILEGE_BIT ), &xIdleTaskHandle );