From 741e7431d013c7fda4a1b8b34bcc2dfa1ecda039 Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Sun, 23 Jan 2022 16:23:56 -0700
Subject: Visual view of memory map

---
 src/cpu/irq.c      | 10 +++++++---
 src/lib/mem.c      | 25 +++++++++++++++++++++++++
 src/sys/schedule.c |  4 +---
 src/util/status.c  |  2 ++
 4 files changed, 35 insertions(+), 6 deletions(-)

(limited to 'src')

diff --git a/src/cpu/irq.c b/src/cpu/irq.c
index e195261..7b6ae7e 100644
--- a/src/cpu/irq.c
+++ b/src/cpu/irq.c
@@ -11,6 +11,7 @@
 #include <util/status.h>
 #include <util/time.h>
 
+void testfxn(void);
 void handle_data(unsigned char);
 
 void c_irq_handler(void)
@@ -115,11 +116,10 @@ void handle_data(unsigned char data)
 			cmd[off] = (char) data;
 			off += 1;
 			release_mutex(&exe_cnt_m, SYS_PID);
-		// heap Info
-		} else if (data == 0x69) {
+		} else if (data == 0x61) {
 			cmd[off] = (char) data;
 			off += 1;
-			add_thread(heap_info, 0, 5);
+			add_thread(testfxn, 0, 3);
 		// Else output
 		} else {
 			cmd[off] = (char) data;
@@ -147,3 +147,7 @@ void handle_data(unsigned char data)
 	write_string(&g_Drawer, "> ");
 	write_string(&g_Drawer, cmd);
 }
+
+void testfxn(void)
+{
+}
diff --git a/src/lib/mem.c b/src/lib/mem.c
index 82f7f45..2f50d3d 100644
--- a/src/lib/mem.c
+++ b/src/lib/mem.c
@@ -1,6 +1,8 @@
 #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)
 {
@@ -246,6 +248,28 @@ 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;
@@ -254,6 +278,7 @@ void heap_info(void)
 		if(base[MEM_USE_OFFSET] == 0) {
 			uart_char('F');
 			uart_char(' ');
+		} else {
 		}
 		uart_hex((unsigned long)(base + MEM_BASE_SIZE));
 		uart_string(" Size: ");
diff --git a/src/sys/schedule.c b/src/sys/schedule.c
index ad7feec..0e9df78 100644
--- a/src/sys/schedule.c
+++ b/src/sys/schedule.c
@@ -52,9 +52,7 @@ struct RStack get_stack(void)
 void draw_stacks(void)
 {
 	unsigned long ioff = 0;
-	unsigned long yoff = 320;
-#define STACK_DRAW_WIDTH 32
-#define STACK_DRAW_SIZE 3
+	unsigned long yoff = STACK_DRAW_YOFF;
 	for(int i = 0; i < MAX_THREADS; i++) {
 		if(stacks_table[i])
 			draw_cbox(ioff, yoff, STACK_DRAW_SIZE, STACK_DRAW_SIZE, 0xFFFFFF);
diff --git a/src/util/status.c b/src/util/status.c
index bb6dd68..155f016 100644
--- a/src/util/status.c
+++ b/src/util/status.c
@@ -2,6 +2,7 @@
 #include <globals.h>
 #include <graphics/drawer.h>
 #include <graphics/lfb.h>
+#include <lib/mem.h>
 #include <symbols.h>
 #include <sys/core.h>
 #include <sys/schedule.h>
@@ -181,4 +182,5 @@ void status(void)
 	g_Drawer.y = y;
 
 	draw_stacks();
+	vheap_info();
 }
-- 
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