You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
#include "kernel.h"
|
|
#include "ktypes.h"
|
|
#include "ecall.h"
|
|
#include "sched.h"
|
|
#include "io.h"
|
|
#include "malloc.h"
|
|
|
|
void read_binary_table();
|
|
|
|
extern ProcessControlBlock processes[PROCESS_COUNT];
|
|
|
|
// this array is populated when the memory image is built, therefore it should
|
|
// resign in a section which is not overwritten with zeros on startup
|
|
loaded_binary binary_table[NUM_BINARIES] __attribute__ ((section(".data")));
|
|
|
|
extern void memset(unsigned int, void*, void*);
|
|
|
|
extern void init()
|
|
{
|
|
init_ecall_table();
|
|
|
|
dbgln("Kernel started!", 15);
|
|
|
|
read_binary_table();
|
|
|
|
scheduler_run_next();
|
|
}
|
|
|
|
void read_binary_table()
|
|
{
|
|
char msg[28] = "found bin with id 0 at pos 0";
|
|
|
|
malloc_info info;
|
|
|
|
info.allocate_memory_end = (void*) 0xFF0000;
|
|
info.allocate_memory_start = (void*) 0;
|
|
|
|
// calculate the end of loaded binaries
|
|
for (int i = 0; i < NUM_BINARIES; i++) {
|
|
if (binary_table[i].binid == 0)
|
|
break;
|
|
|
|
if (DEBUGGING) {
|
|
// print message
|
|
msg[18] = (char) binary_table[i].binid + '0';
|
|
msg[27] = (char) i + '0';
|
|
dbgln(msg, 28);
|
|
}
|
|
|
|
info.allocate_memory_start = binary_table[i].bounds[1];
|
|
}
|
|
|
|
// initialize malloc
|
|
malloc_init(&info);
|
|
|
|
for (int i = 0; i < NUM_BINARIES; i++) {
|
|
if (binary_table[i].binid == 0)
|
|
break;
|
|
|
|
// create a new process for each binary found
|
|
// it should have around 4kb stack
|
|
optional_pcbptr res = create_new_process(binary_table + i, 1 << 12);
|
|
if (has_error(res)) {
|
|
dbgln("Error creating initial process!", 31);
|
|
}
|
|
}
|
|
}
|