Finish ISR code for CPU faults (ISRs 0-31)

src/modules/main/interrupts.cpp

@@ -109,9 +109,6 @@ interrupts_init()
 {
 	uint8_t *p;
 
-	gdt_load();
-	gdt_dump(g_gdtr);
-
 	p = reinterpret_cast<uint8_t *>(&g_gdt_table);
 	for (int i = 0; i < sizeof(g_gdt_table); ++i) p[i] = 0;
 
@@ -127,9 +124,6 @@ interrupts_init()
 	set_gdt_entry(7, 0, 0xfffff,  true, gdt_flags::rw | gdt_flags::ex);
 
 	gdt_write();
-	gdt_load();
-	gdt_dump(g_gdtr);
-
 	p = reinterpret_cast<uint8_t *>(&g_idt_table);
 	for (int i = 0; i < sizeof(g_idt_table); ++i) p[i] = 0;
 
@@ -154,10 +148,35 @@ struct registers
 void
 isr_handler(registers regs)
 {
-	console::get()->puts("received interrupt: ");
-	console::get()->put_dec(regs.interrupt);
+	console *cons = console::get();
+
+	cons->puts("received interrupt:\n");
+
+#define print_reg(name, value) \
+	cons->puts("         " name ": "); \
+	cons->put_hex((value)); \
+	cons->puts("\n");
+
+	print_reg("ISR", regs.interrupt);
+	print_reg("ERR", regs.errorcode);
 	console::get()->puts("\n");
-	while(1);
+
+	print_reg(" ds", regs.ds);
+	print_reg("rdi", regs.rdi);
+	print_reg("rsi", regs.rsi);
+	print_reg("rbp", regs.rbp);
+	print_reg("rsp", regs.rsp);
+	print_reg("rbx", regs.rbx);
+	print_reg("rdx", regs.rdx);
+	print_reg("rcx", regs.rcx);
+	print_reg("rax", regs.rax);
+	console::get()->puts("\n");
+
+	print_reg("rip", regs.rip);
+	print_reg(" cs", regs.cs);
+	print_reg(" ef", regs.eflags);
+	print_reg("esp", regs.user_esp);
+	print_reg(" ss", regs.ss);
 }
 
 

src/modules/main/interrupts.s

@@ -78,6 +78,7 @@ isr_handler_prelude:
 	push rcx
 	push rdx
 	push rbx
+	push rsp
 	push rbp
 	push rsi
 	push rdi
@@ -102,11 +103,12 @@ isr_handler_prelude:
 	pop rdi
 	pop rsi
 	pop rbp
+	pop rsp
 	pop rbx
 	pop rdx
 	pop rcx
 	pop rax
 
-	add rsp, 8		; because the ISRs added err/num
+	add rsp, 16		; because the ISRs added err/num
 	sti
 	iretq

src/modules/main/main.cpp

@@ -45,8 +45,9 @@ kernel_main(popcorn_data *header)
 
 	cons.puts("Interrupts initialized.\n");
 
+	// int x = 1 / 0;
 	// isr31();
- 	__asm__ __volatile__("int $31");
+	__asm__ __volatile__("int $15");
 
 	cons.puts("boogity!");
 	do_the_set_registers(header);