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starting all available binaries as processes on kernel startup

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Anton Lydike 2021-08-21 11:13:12 +02:00
parent a0c3a57921
commit 16d0c05272
1 changed files with 35 additions and 0 deletions
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35
kernel.c
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@ -2,6 +2,7 @@
#include "ecall.h"
#include "sched.h"
#include "io.h"
#include "malloc.h"
void create_processes_from_bin_table();
@ -24,6 +25,40 @@ extern void init()
void create_processes_from_bin_table()
{
char msg[28] = "found bin with id 0 at pos 0";
ProcessControlBlock* next_process = processes;
malloc_info info;
info.allocate_memory_end = (void*) 0xFF0000;
info.allocate_memory_start = (void*) 0;
for (int i = 0; i < NUM_BINARIES; i++) {
if (binary_table[i].binid == 0)
break;
// 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;
next_process->status = PROC_RDY;
next_process->pid = binary_table[i].binid;
next_process->pc = binary_table[i].entrypoint;
void* stack_top = malloc_stack(1<<12); // allocate 4Kib stack
int stack_e = ((int) stack_top) - 32;
next_process->regs[1] = stack_e; // set stack top, put 32 bytes of zeros there
next_process++;
dbgln("enabled process from table", 26);
memset(0, (void*) stack_e, stack_top); // write zeros to stack
}
}