Give kassert its own vector instead of DBZ

src/kernel/assert.cpp

@@ -15,15 +15,6 @@ __kernel_assert(const char *file, unsigned line, const char *message)
 		cons->puts(message);
 	}
 
-	__asm__ __volatile__( 
-		"movq %0, %%r8;"
-		"movq %1, %%r9;"
-		"movq %2, %%r10;"
-		"movq $0, %%rdx;"
-		"divq %%rdx;"
-		: // no outputs
-		: "r"((uint64_t)line), "r"(file), "r"(message)
-		: "rax", "rdx", "r8", "r9", "r10");
-
-	while (1);
+	__asm__ ( "int $0e7h" );
+	while (1) __asm__ ("hlt");
 }

src/kernel/interrupt_isrs.inc

@@ -134,6 +134,8 @@ IRQ (0x7d, 0x5d, irq5D)
 IRQ (0x7e, 0x5e, irq5E)
 IRQ (0x7f, 0x5f, irq5F)
 
+ISR (0xe7, isrAssert)
+
 ISR (0xec, isrTimer)
 ISR (0xed, isrLINT0)
 ISR (0xee, isrLINT1)

src/kernel/interrupts.cpp

@@ -192,7 +192,6 @@ interrupts_init()
 	enable_serial_interrupts();
 
 	log::info(logs::boot, "Interrupts enabled.");
-	gdt_dump(g_gdtr);
 }
 
 struct registers
@@ -339,6 +338,28 @@ isr_handler(registers regs)
 		while(1) asm("hlt");
 		break;
 
+	case isr::isrAssert: {
+			cons->set_color();
+
+			cons->puts("\n");
+			print_reg("rax", regs.rax);
+			print_reg("rbx", regs.rbx);
+			print_reg("rcx", regs.rcx);
+			print_reg("rdx", regs.rdx);
+			print_reg("rdi", regs.rdi);
+			print_reg("rsi", regs.rsi);
+
+			cons->puts("\n");
+			print_reg("rbp", regs.rbp);
+			print_reg("rsp", regs.rsp);
+
+			cons->puts("\n");
+			print_reg("rip", regs.rip);
+			print_stacktrace(2);
+		}
+		while(1) asm("hlt");
+		break;
+
 	default:
 		cons->set_color(9);
 		cons->puts("\nReceived ISR interrupt:\n");

src/kernel/main.cpp

@@ -98,7 +98,8 @@ kernel_main(popcorn_data *header)
 		uint8_t buf[512];
 		kutil::memset(buf, 0, 512);
 
-		disk->read(0x200, sizeof(buf), buf);
+		kassert(disk->read(0x200, sizeof(buf), buf),
+				"Disk read returned 0");
 
 		console *cons = console::get();
 		uint8_t *p = &buf[0];