void
i386_init(void)
{
extern char edata[], end[];
// Before doing anything else, complete the ELF loading process.
// Clear the uninitialized global data (BSS) section of our program.
// This ensures that all static/global variables start out zero.
memset(edata, 0, end - edata);
// Initialize the console.
// Can't call cprintf until after we do this!
cons_init();
cprintf("6828 decimal is %o octal!\n", 6828);
// Lab 2 memory management initialization functions
i386_detect_memory();
i386_vm_init();
page_init();
page_check();
// Lab 3 user environment initialization functions
env_init();
idt_init();
// Lab 4 multitasking initialization functions
pic_init();
kclock_init();
// Should always have an idle process as first one.
ENV_CREATE(user_idle);
// Start fs.
ENV_CREATE(fs_fs);
ENV_CREATE(user_icode);
#if defined(TEST)
// Don't touch -- used by grading script!
ENV_CREATE2(TEST, TESTSIZE)
#else
// Touch all you want.
// ENV_CREATE(user_icode);
// ENV_CREATE(user_pipereadeof);
// ENV_CREATE(user_pipewriteeof);
// ENV_CREATE(user_testpipe);
// ENV_CREATE(user_primespipe);
// ENV_CREATE(user_testpiperace);
// ENV_CREATE(user_testpiperace2);
// ENV_CREATE(user_testfdsharing);
#endif // TEST*
// Should not be necessary - drain keyboard because interrupt has given up.
kbd_intr();
// Schedule and run the first user environment!
sched_yield();
}
void mips_init()
{
printf("init.c:\tmips_init() is called\n");
mips_detect_memory();
mips_vm_init();
page_init();
//page_check();
env_init();
//ENV_CREATE(user_fktest);
//ENV_CREATE(user_pt1);
ENV_CREATE(user_idle);
ENV_CREATE(fs_serv);
//ENV_CREATE(user_fktest);
//ENV_CREATE(user_pingpong);
//ENV_CREATE(user_testfdsharing);
//ENV_CREATE(user_testspawn);
//ENV_CREATE(user_testpipe);
//ENV_CREATE(user_testpiperace);
ENV_CREATE(user_icode);
trap_init();
kclock_init();
//env_run(&envs[0]);
//env_run(&envs[1]);
panic("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^");
while (1);
panic("init.c:\tend of mips_init() reached!");
}
void
i386_init(void)
{
extern char edata[], end[];
// Before doing anything else, complete the ELF loading process.
// Clear the uninitialized global data (BSS) section of our program.
// This ensures that all static/global variables start out zero.
memset(edata, 0, end - edata);
// Initialize the console.
// Can't call cprintf until after we do this!
cons_init();
cprintf("6828 decimal is %o octal!\n", 6828);
// Lab 2 memory management initialization functions
i386_detect_memory();
i386_vm_init();
// Lab 3 user environment initialization functions
env_init();
idt_init();
// Lab 4 multitasking initialization functions
pic_init();
kclock_init();
time_init();
pci_init();
// Should always have an idle process as first one.
ENV_CREATE(user_idle);
// Start fs.
ENV_CREATE(fs_fs);
#if !defined(TEST_NO_NS)
// Start ns.
ENV_CREATE(net_ns);
#endif
#if defined(TEST)
// Don't touch -- used by grading script!
ENV_CREATE2(TEST, TESTSIZE);
#else
// Touch all you want.
// ENV_CREATE(net_testoutput);
// ENV_CREATE(user_echosrv);
// ENV_CREATE(user_httpd);
// ENV_CREATE(user_writemotd);
// ENV_CREATE(user_testfile);
ENV_CREATE(user_icode);
// ENV_CREATE(user_primes);
#endif // TEST*
// Schedule and run the first user environment!
sched_yield();
}
void
i386_init(void)
{
extern char edata[], end[];
// Before doing anything else, complete the ELF loading process.
// Clear the uninitialized global data (BSS) section of our program.
// This ensures that all static/global variables start out zero.
memset(edata, 0, end - edata);
// Initialize the console.
// Can't call cprintf until after we do this!
cons_init();
#if defined(LAB1_ONLY)
cprintf("6828 decimal is %o octal!\n", 6828);
/* ----- Exercise 8 of Lab 1 -----*/
int x=1,y=3,z=4;
cprintf("x %d, y %x, z %d\n", x, y, z);
unsigned int i = 0x00646c72;
cprintf("H%x Wo%s\n", 57616, &i);
// Shows He110 World, while the demical 0d57616 = 0xe110
// 'r' = 0x72, 'l' = 0x6c, 'd' = 0x64, '\0' = 0x00 which indicates the end of the string
// If the x86 is big-endian, 57616 -> 4321, 0x00646c72 -> 0x726c6400
// Test the stack backtrace function (lab 1 only)
test_backtrace(5);
#endif
// Lab 2 memory management initialization functions
i386_detect_memory();
i386_vm_init();
// Lab 3 user environment initialization functions
env_init();
idt_init();
// Lab 4 multitasking initialization functions
pic_init();
kclock_init();
time_init();
pci_init();
// Should always have an idle process as first one.
ENV_CREATE(user_idle); // 0
// Start fs
ENV_CREATE(fs_fs); // 1
// Start ns.
ENV_CREATE(net_ns); // 2
// Start init
#if defined(TEST)
// Don't touch -- used by grading script!
ENV_CREATE2(TEST, TESTSIZE);
#else
// Touch all you want.
// ENV_CREATE(user_echosrv);
// ENV_CREATE(user_httpd);
// ENV_CREATE(user_testtime);
#endif // TEST*
// Schedule and run the first user environment!
sched_yield();
}
void
i386_init(uint32_t memsize)
{
extern char etext[],edata[], end[];
// Before doing anything else, complete the ELF loading process.
// Clear the uninitialized global data (BSS) section of our program.
// This ensures that all static/global variables start out zero.
/*
* From http://en.wikipedia.org/wiki/.bss
* In computer programming
* .bss or bss (Block Started by Symbol) is used by many compilers and linkers
* as the name of the data segment containing static variables
* that are filled solely with zero-valued data initially
* (i. e., when execution begins).
* It is often referred to as the "bss section" or "bss segment".
* The program loader initializes the memory allocated for the bss section
* when it loads the program.
*/
memset(edata, 0, end - edata);
// Initialize the console.
// Can't call cprintf until after we do this!
cons_init();
cprintf("6828 decimal is %o octal!\n", 6828);
cprintf("etext:%08x,edata:%08x,end:%08x\n",etext,edata,end);
// Lab 2 memory management initialization functions
i386_detect_memory(memsize);
i386_vm_init();
// Lab 3 user environment initialization functions
env_init();
idt_init();
// Lab 4 multitasking initialization functions
pic_init();
kclock_init();
// Should always have an idle process as first one.
ENV_CREATE(user_idle);
// Start fs.
ENV_CREATE(fs_fs);
// Start init
#if defined(TEST)
// Don't touch -- used by grading script!
ENV_CREATE2(TEST, TESTSIZE);
#else
// Touch all you want.
ENV_CREATE(user_fairness);
//ENV_CREATE(user_pipereadeof);
// ENV_CREATE(user_pipewriteeof);
#endif
// Should not be necessary - drain keyboard because interrupt has given up.
kbd_intr();
//while(login() != 0)
// continue;
// Schedule and run the first user environment!
sched_yield();
}