From e3eb5a92ae3991cdfbb5a5cf553eac476bc5822f Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Fri, 4 Feb 2022 23:55:05 -0700
Subject: Removed old mem

---
 src/lib/mem.c | 340 ----------------------------------------------------------
 1 file changed, 340 deletions(-)
 delete mode 100644 src/lib/mem.c

(limited to 'src/lib/mem.c')

diff --git a/src/lib/mem.c b/src/lib/mem.c
deleted file mode 100644
index 2f50d3d..0000000
--- a/src/lib/mem.c
+++ /dev/null
@@ -1,340 +0,0 @@
-#include <drivers/uart.h>
-#include <globals.h>
-#include <graphics/lfb.h>
-#include <lib/mem.h>
-#include <sys/schedule.h>
-
-void memcpyrot(unsigned char* src, struct RotBuffer* rb, unsigned int n)
-{
-	if (n > rb->size)
-		return;
-	unsigned char* base = rb->base;
-	unsigned int offset = rb->woffset;
-	for (unsigned int i = 0; i < n; i++) {
-		if (offset >= rb->size)
-			offset = 0;
-		base[offset] = src[i];
-		offset++;
-	}
-	rb->woffset = offset;
-}
-
-void memshow(unsigned char* addr, unsigned int n)
-{
-	unsigned char temp;
-	for(unsigned int i = 0; i < n; i++) {
-		temp = addr[i] >> 4;
-		temp += 0x30;
-		if (temp > 0x39)
-			temp += 7;
-		uart_char(temp);
-		temp = addr[i];
-		temp += 0x30;
-		if (temp > 0x39)
-			temp += 7;
-		uart_char(temp);
-		if (i+1 != n)
-			uart_char(0x20);
-	}
-	uart_char(0x0a);
-}
-
-void memshow32(unsigned long* addr, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		uart_hex(addr[i]);
-		if (i+1 != n)
-			uart_char(0x20);
-	}
-	uart_char(0x0a);
-}
-
-void memset(unsigned char* dest, unsigned char value, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		dest[i] = value;
-	}
-}
-
-void memcpy(unsigned char* src, unsigned char* dest, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		dest[i] = src[i];
-	}
-}
-
-unsigned char memcmp(unsigned char* a, unsigned char* b, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		if (a[i] != b[i])
-			return 0;
-	}
-	return 1;
-}
-
-void memset32(unsigned long* dest, unsigned long value, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		dest[i] = value;
-	}
-}
-
-void memcpy32(unsigned long* src, unsigned long* dest, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		dest[i] = src[i];
-	}
-}
-
-unsigned char memcmp32(unsigned long* a, unsigned long* b, unsigned int n)
-{
-	for(unsigned int i = 0; i < n; i++) {
-		if (a[i] != b[i])
-			return 0;
-	}
-	return 1;
-}
-
-
-void* malloc(unsigned char size)
-{
-	unsigned char* mem = (unsigned char*)rpi_heap;
-	unsigned long i = 0;
-	// TODO: Use Null PID
-	while (((void*)(mem + i) < rpi_heap_top) && !(mem[i + MEM_SIZE_OFFSET] == size && mem[i + MEM_USE_OFFSET]==0)) {
-		i += mem[i] + MEM_META_SIZE;
-	}
-	if (mem + i >= (unsigned char*)(rpi_heap_top + MAX_MM))
-		return NULL;
-	// Update top of heap
-	if (mem[i] == 0)
-		rpi_heap_top = (void*)&mem[i + MEM_META_SIZE + size];
-	mem[i] = size;
-	mem[i + MEM_BASE_SIZE + size] = size;
-	// Use allocator's PID
-	mem[i + MEM_USE_OFFSET] = 1;
-	return (void*)&mem[i + MEM_BASE_SIZE];
-}
-
-void* calloc(unsigned char size)
-{
-	void* addr = malloc(size);
-	if (addr != NULL) {
-		memset(addr, 0, size);
-		return addr;
-	}
-	return NULL;
-}
-void* realloc(void* old, unsigned char size)
-{
-	unsigned char osize = *(unsigned char*)(old - MEM_BASE_SIZE);
-	if (size <= osize)
-		return old;
-	void* new = malloc(size);
-	if (new != NULL) {
-		free(old);
-		return new;
-	}
-	return NULL;
-}
-
-void* malloca(unsigned char size, unsigned char amnt)
-{
-	// Return malloc if alignment size is 0 or 1 - trivial alignment
-	if(amnt == 0 || amnt == 1)
-		return malloc(size);
-	unsigned char* mem = (unsigned char*)rpi_heap;
-	unsigned long i = 0;
-	// TODO: Use Null PID
-	while(mem + i < rpi_heap + MAX_MM) {
-		unsigned long diff = (unsigned long)mem + i + MEM_BASE_SIZE;
-		diff %= amnt;
-		diff = amnt - diff;
-		diff %= amnt;
-		if((mem[i + MEM_SIZE_OFFSET] == size) && mem[i + MEM_USE_OFFSET]==0) {
-			if(diff == 0) {
-				mem[i + MEM_SIZE_OFFSET] = size;
-				mem[i + MEM_BASE_SIZE + size] = size;
-				mem[i + MEM_USE_OFFSET] = 1;
-				return (void*)&mem[i + MEM_BASE_SIZE];
-			}
-		} else if (mem[i] == 0) {
-			if(diff == 0) {
-				mem[i + MEM_SIZE_OFFSET] = size;
-				mem[i + MEM_BASE_SIZE + size] = size;
-				mem[i + MEM_USE_OFFSET] = 1;
-				rpi_heap_top = (void*)&mem[i + MEM_META_SIZE + size];
-				return (void*)&mem[i + MEM_BASE_SIZE];
-			} else {
-				while (diff <= MEM_BASE_SIZE) {
-					diff += amnt;
-				}
-				unsigned long empty_size = diff - MEM_META_SIZE;
-				if(empty_size == 0) {
-					empty_size += amnt;
-					diff += amnt;
-				}
-				mem[i + MEM_SIZE_OFFSET] = empty_size;
-				mem[i + MEM_BASE_SIZE + empty_size] = empty_size;
-				i += diff;
-				mem[i + MEM_SIZE_OFFSET] = size;
-				mem[i + MEM_BASE_SIZE + size] = size;
-				mem[i + MEM_USE_OFFSET] = 1;
-				rpi_heap_top = (void*)&mem[i + MEM_META_SIZE + size];
-				return (void*)&mem[i + MEM_BASE_SIZE];
-			}
-		}
-
-		i += mem[i] + MEM_META_SIZE;
-	}
-	return NULL;
-}
-
-void* calloca(unsigned char size, unsigned char amnt)
-{
-	void* addr = malloca(size, amnt);
-	if (addr != NULL) {
-		memset(addr, 0, size);
-		return addr;
-	}
-	return NULL;
-}
-
-void* realloca(void* old, unsigned char size, unsigned char amnt)
-{
-	unsigned char osize = *(unsigned char*)(old - MEM_BASE_SIZE);
-	if (size <= osize)
-		return old;
-	void* new = malloca(size, amnt);
-	if (new != NULL) {
-		free(old);
-		return new;
-	}
-	return NULL;
-}
-
-void free(void* memloc)
-{
-	// Don't try to free memory outside of heap
-	if(!(((void*)rpi_heap <= memloc) && (memloc < rpi_heap_top)))
-		return;
-	unsigned char* base = memloc - MEM_BASE_SIZE;
-	unsigned char size = base[MEM_SIZE_OFFSET];
-	// TODO: Use Null PID
-	base[MEM_USE_OFFSET] = 0;
-	// Clear out old memory
-	for(unsigned int i = 0; i < size; i++) {
-		base[i + MEM_BASE_SIZE] = 0;
-	}
-	// If it is the last entry, clear it and move the heap top down
-	if (base + size + MEM_META_SIZE == rpi_heap_top) {
-		while(base[MEM_USE_OFFSET] == 0 && base >= rpi_heap) {
-			base[MEM_SIZE_OFFSET] = 0;
-			base[MEM_BASE_SIZE + size] = 0;
-			rpi_heap_top = base;
-			unsigned long psize = *(base - 1);
-			base -= psize + MEM_META_SIZE;
-		}
-	}
-}
-
-void* heap_base(void)
-{
-	return (void*)rpi_heap;
-}
-
-void* heap_top(void)
-{
-	return rpi_heap_top;
-}
-
-void vheap_info(void)
-{
-	unsigned char* base = rpi_heap;
-	unsigned long ioff = STACK_DRAW_WIDTH*STACK_DRAW_SIZE;
-	unsigned long yoff = STACK_DRAW_YOFF;
-	draw_cbox(ioff, yoff, STACK_DRAW_SIZE*STACK_DRAW_WIDTH, STACK_DRAW_SIZE * 8, 0x0);
-	while ((void*)base < rpi_heap_top) {
-		unsigned char size = base[MEM_SIZE_OFFSET];
-		if(base[MEM_USE_OFFSET] == 0) {
-			draw_cbox(ioff, yoff, STACK_DRAW_SIZE, STACK_DRAW_SIZE, 0x00FF00);
-		} else {
-			draw_cbox(ioff, yoff, STACK_DRAW_SIZE, STACK_DRAW_SIZE, 0xFF0000);
-		}
-		ioff += STACK_DRAW_SIZE;
-		if(ioff % STACK_DRAW_WIDTH == 0) {
-			yoff += STACK_DRAW_SIZE;
-			ioff = STACK_DRAW_WIDTH*STACK_DRAW_SIZE;
-		}
-		base += size + MEM_META_SIZE;
-	}
-}
-
-void heap_info(void)
-{
-	unsigned char* base = rpi_heap;
-	while ((void*)base < rpi_heap_top) {
-		unsigned char size = base[MEM_SIZE_OFFSET];
-		if(base[MEM_USE_OFFSET] == 0) {
-			uart_char('F');
-			uart_char(' ');
-		} else {
-		}
-		uart_hex((unsigned long)(base + MEM_BASE_SIZE));
-		uart_string(" Size: ");
-		uart_10(size);
-		uart_string("\n");
-		static char* data = "00 \0";
-		static unsigned char temp = 0;
-		for(unsigned int i = 0; i < size; i++) {
-			temp = (base[MEM_BASE_SIZE + i]>>4)&0xF;
-			if(temp > 9)
-				temp += 7;
-			temp += 0x30;
-			data[0] = temp;
-			temp = (base[MEM_BASE_SIZE + i])&0xF;
-			if(temp > 9)
-				temp += 7;
-			temp += 0x30;
-			data[1] = temp;
-			uart_string(data);
-		}
-		uart_char('\n');
-		base += size + MEM_META_SIZE;
-	}
-	uart_char('\n');
-}
-
-void heap_info_u(void)
-{
-	unsigned char* base = rpi_heap;
-	while ((void*)base < rpi_heap_top) {
-		unsigned char size = base[MEM_SIZE_OFFSET];
-		if(base[MEM_USE_OFFSET] == 0) {
-			base += size + MEM_META_SIZE;
-			continue;
-		}
-		uart_hex((unsigned long)(base + MEM_BASE_SIZE));
-		uart_string(" Size: ");
-		uart_10(size);
-		uart_string("\n");
-		static char* data = "00 \0";
-		static unsigned char temp = 0;
-		for(unsigned int i = 0; i < size; i++) {
-			temp = (base[MEM_BASE_SIZE + i]>>4)&0xF;
-			if(temp > 9)
-				temp += 7;
-			temp += 0x30;
-			data[0] = temp;
-			temp = (base[MEM_BASE_SIZE + i])&0xF;
-			if(temp > 9)
-				temp += 7;
-			temp += 0x30;
-			data[1] = temp;
-			uart_string(data);
-		}
-		uart_char('\n');
-		base += size + MEM_META_SIZE;
-	}
-	uart_char('\n');
-}
-- 
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