Each thread has its own stack. Added simple unit tests for kmalloc,kfree

Found a bug in heap_contract (not sure) but didn't fix it.

5 files changed, 43 insertions, 2 deletions

diff --git a/src/kernel/core/kmain.c b/src/kernel/core/kmain.c
index 65a39e6..6c9700e 100644
--- a/src/kernel/core/kmain.c
+++ b/src/kernel/core/kmain.c
@@ -2,6 +2,7 @@
 #include "multiboot.h"
 #include "monitor.h"
 #include "sys.h"
+#include "test.h"
 #include <task/idt.h>
 #include <task/timer.h>
 #include <task/task.h>
@@ -63,6 +64,8 @@ void kmain(struct multiboot_info_t* mbd, int32_t magic) {
 		}
 	}
 
+	test_run();
+
 	monitor_write("Modules now RULE THE WORLD !\n");
 	sti();
 	tasking_switch();
diff --git a/src/kernel/core/monitor.h b/src/kernel/core/monitor.h
index c04632e..bb8e16e 100644
--- a/src/kernel/core/monitor.h
+++ b/src/kernel/core/monitor.h
@@ -10,11 +10,12 @@ void monitor_writeHex(uint32_t v);
 void monitor_writeDec(uint32_t v);
 
 #define NL monitor_put('\n');
+#define TAB monitor_put('\t');
 #define WHERE { monitor_write("(kernel:");	\
 				monitor_write(__FILE__);	\
 				monitor_write(":");			\
 				monitor_writeDec(__LINE__);	\
-				monitor_write(") "); }
+				monitor_write(")\t"); }
 
 #endif
 
diff --git a/src/kernel/core/sys.c b/src/kernel/core/sys.c
index 56de038..05a7bc5 100644
--- a/src/kernel/core/sys.c
+++ b/src/kernel/core/sys.c
@@ -28,7 +28,7 @@ uint16_t inw(uint16_t port) {
 void stack_trace(size_t bp) {
 	uint32_t *stack = (uint32_t*)bp, i;
 	for (i = 0; i < 5 && stack > 0xE0000000 && stack < (bp + 0x8000); i++) {
-		monitor_write(" "); monitor_writeHex(stack);
+		monitor_write("| "); monitor_writeHex(stack);
 		monitor_write("\tnext:"); monitor_writeHex(stack[0]); monitor_write("\t\tret:"); monitor_writeHex(stack[1]);
 		monitor_write("\n");
 		stack = (uint32_t*)stack[0];
diff --git a/src/kernel/core/test.c b/src/kernel/core/test.c
new file mode 100644
index 0000000..77c7029
--- /dev/null
+++ b/src/kernel/core/test.c
@@ -0,0 +1,31 @@
+#include "test.h"
+#include "monitor.h"
+#include <mem/mem.h>
+#include "sys.h"
+
+#define TEST_KMALLOC(var, sz) monitor_write("kmalloc:"); monitor_writeHex(sz); void *var = kmalloc(sz); \
+	if (var < 0xE0000000) { monitor_write(":FAIL\t"); PANIC("A test failed."); } \
+	else monitor_write(":OK:"); monitor_writeHex(var); monitor_write("\t");
+#define TEST_KFREE(var) if (var != 0) { monitor_write("kfree:"); monitor_writeHex(var); kfree(var); monitor_write(":OK\t"); }
+
+void test_run() {
+	monitor_write("Run kmalloc() and kfree() unit tests:\n");
+	int i;
+	for (i = 1; i <= 5; i++) {
+		monitor_write("\nMALLOC TEST SERIES #"); monitor_writeDec(i); monitor_write(":\n");
+		TEST_KMALLOC(a, 32);
+		TEST_KMALLOC(b, 64);
+		TEST_KMALLOC(c, 256);
+		TEST_KMALLOC(d, 512);
+		TEST_KMALLOC(e, 1024);
+		TEST_KMALLOC(f, 4096);
+		TEST_KMALLOC(g, 16384);
+		TEST_KFREE(b);
+		TEST_KFREE(c);
+		TEST_KFREE(d);
+		TEST_KFREE(e);
+		TEST_KFREE(f);
+		TEST_KFREE(g);
+	}
+	monitor_write("\nUnit tests finished.\n");
+}
diff --git a/src/kernel/core/test.h b/src/kernel/core/test.h
new file mode 100644
index 0000000..ee689c6
--- /dev/null
+++ b/src/kernel/core/test.h
@@ -0,0 +1,6 @@
+#ifndef DEF_TEST_H
+#define DEF_TEST_H
+
+void test_run();	//run basic unit tests on kmalloc() and kfree()
+
+#endif