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Add ugly hack to support loader

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This commit is contained in:
Kevin Lange 2016-11-24 19:36:15 +09:00
parent 42d108f0d7
commit e827580b79
1 changed files with 23 additions and 0 deletions
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23
kernel/sys/syscall.c
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@ -560,6 +560,29 @@ static int sys_sysfunc(int fn, char ** args) {
_debug_print(args[0], (uintptr_t)args[1], (uint32_t)args[2], args[3]);
return 0;
break;
/* The following functions are here to support the loader and are probably bad. */
case 9:
{
process_t * proc = (process_t *)current_process;
if (proc->group != 0) {
proc = process_from_pid(proc->group);
}
spin_lock(proc->image.lock);
/* Set new heap start */
proc->image.heap = (uintptr_t)args[0];
proc->image.heap_actual = proc->image.heap & 0xFFFFF000;
assert(proc->image.heap_actual % 0x1000 == 0);
alloc_frame(get_page(proc->image.heap_actual, 1, current_directory), 0, 1);
invalidate_tables_at(proc->image.heap_actual);
while (proc->image.heap > proc->image.heap_actual) {
proc->image.heap_actual += 0x1000;
alloc_frame(get_page(proc->image.heap_actual, 1, current_directory), 0, 1);
invalidate_tables_at(proc->image.heap_actual);
}
spin_unlock(proc->image.lock);
return 0;
}
default:
debug_print(ERROR, "Bad system function %d", fn);
break;