better print and mem

include/shim.h

@@ -8,7 +8,6 @@
 struct memory_segment {
 	uint64_t addr;
 	uint64_t len;
-	uint32_t type;
 };
 
 struct memory_map {

src/arch/amd64/debugger.c

@@ -300,7 +300,7 @@ static int debugger_prompt(struct isr_regs *state) {
 	case 's': // step (n)
 		rflags->tf = 1;
 		dbg_steps = atol(buf + 1) - 1;
-		if (dbg_steps < 0) dbg_steps = 0;
+		//if (dbg_steps < 0) dbg_steps = 0;
 		return 0;
 	case 'b': // breakpoints
 		{

src/arch/amd64/mboot.c

@@ -133,19 +133,43 @@ static void read_cmdline(
 	shim_info->cmdline[size] = '\0';
 }
 
+static const char *segment_type[] = {
+	"Reserved",
+	"Free",
+	"Reserved",
+	"ACPI Reserved",
+	"Hibernation",
+	"Defective",
+	"Unknown"
+};
+
 static void read_memory_map(
 		struct boot_info *shim_info,
 		struct mboot_tag_mmap *map
 ) {
 	int idx = 0;
 	uintptr_t i = (uintptr_t)map->entries;
+	kprintf("MEMORY MAP\n");
+	char buf[20];
 	for (	;
 			i < (uintptr_t)map->entries + map->size;
 			i += map->entry_size, idx++
 	) {
 		struct mboot_mmap_entry *seg = (struct mboot_mmap_entry *) i;
+		const char *type = NULL;
+		if (seg->type > 4)
+			type = segment_type[6];
+		else
+			type = segment_type[seg->type];
+		kprintf("ADDR: 0x%16p  LEN: %4s  TYPE: %s (%d)\n",
+				(void *)seg->addr,
+				btoa(seg->len, buf),
+				type,
+				seg->type
+		);
+		if (seg->type != 1 || seg->len < 1)
+			continue;
 		shim_info->map.entries[idx].addr = seg->addr;
-		shim_info->map.entries[idx].type = seg->type;
 		shim_info->map.entries[idx].len = seg->len;
 	}
 	shim_info->map.entry_count = idx;

src/memory/physalloc.c

@@ -109,7 +109,6 @@ void free_phys_pages(void *ptr, int pages) {
 }
 
 static bool segment_invalid(const struct memory_segment *segment) {
-	if (segment->type != 1) return true;
 	if (segment->addr < kaddr(kernel_start)) return true;
 	if (segment->addr + segment->len < memory_start) return true;
 	if (segment->addr + segment->len < kaddr(kernel_start)) return true;
@@ -188,14 +187,12 @@ void memory_init(struct memory_map *map) {
 
 	struct memory_area *area = page_start;
 
-	kprintf("MEMORY MAP\n");
 	for (uint32_t i = 0; i < map->entry_count; i++) {
 		struct memory_segment *segment = &map->entries[i];
 
 		if (segment_invalid(segment))
 			continue;
 
-		kprintf("addr: 0x%16p\tlen: %ld\n", (void *)segment->addr, segment->len);
 
 		struct memory_area temp = segment_to_area(segment);
 		*area = temp;

src/memory/virtalloc.c

@@ -129,13 +129,9 @@ static void merge_back(struct addr_node *node) {
 }
 
 static void merge_forward(struct addr_node *node) {
-<<<<<<< HEAD
-	while (node->next && !node->is_alloc) {
-=======
 	while(node->next) {
 		if (node->is_alloc != node->next->is_alloc)
 			break;
->>>>>>> ea2de5a (looping kalloc can allocate all of memory (sometimes) :3)
 		struct addr_node *temp = node->next;
 		node->end = temp->end;
 		node->next = temp->next;

src/print.c

@@ -344,7 +344,7 @@ static void print_unum(
 
 	bool space_pre = (flag & FLG_LEFT_ALIGN) || !(flag & FLG_ZERO);
 
-	if (space_pre && radix == 16 && flag & FLG_ALTERNATE) {
+	if (!space_pre && radix == 16 && flag & FLG_ALTERNATE) {
 		char x = base + ('x' - 'a');
 		serial_out('0');
 		serial_out(x);
@@ -372,6 +372,12 @@ static void print_unum(
 			zero_padded = true;
 	}
 
+	if (space_pre && radix == 16 && flag & FLG_ALTERNATE) {
+		char x = base + ('x' - 'a');
+		serial_out('0');
+		serial_out(x);
+	}
+
 	kputs(str);
 
 	if (!zero_padded && (flag & FLG_ALTERNATE) && radix == 8)