// this code is licenced under Wrathmark licence
// © 2026 wullie wulliestudio.com 
// please see attached licence for full usage and rights

#include "stdWullie/memory/brk.h"
#include "stdWullie/exit.h"
#include "LocalHeader.h"

int brk(void *address){
	
	long result = syscall1(SYS_brk, (long)address);
	if((void*)result == address){
		return 0;
	}
	return -1;
}

void *sbrk(intptr_t incrament){	

	// gets the last break point and checks whether we just wanted that or do something else
	void *prevBrk = (void *)syscall1(SYS_brk, 0);
	if(incrament == 0){
		return prevBrk;
	}

	// something else
	void *newBrk = (char *)prevBrk + incrament;

	long result = syscall1(SYS_brk, (long)newBrk);

	if((void *)result != newBrk){
		safeError("FAULT IN ALLOCATING NEW BREAK");
	}

	// pointer to the start of the new memory
	return prevBrk;
}