Get things to run under linux, also fix serial console

rust-toolchain

@@ -1 +1,2 @@
-nightly-2019-09-28
+nightly
+

scripts/bochsrc

@@ -16,7 +16,7 @@
 # 'usb_ehci', 'usb_ohci', 'usb_uhci', 'usb_xhci' and 'voodoo'.
 #=======================================================================
 #plugin_ctrl: unmapped=0, e1000=1 # unload 'unmapped' and load 'e1000'
-plugin_ctrl: unmapped=1, biosdev=1, speaker=1, extfpuirq=1, parallel=1, serial=1
+plugin_ctrl: unmapped=1, biosdev=1, speaker=0, extfpuirq=1, parallel=1, serial=1
 #=======================================================================
 # CONFIG_INTERFACE
 #
@@ -34,7 +34,7 @@ plugin_ctrl: unmapped=1, biosdev=1, speaker=1, extfpuirq=1, parallel=1, serial=1
 # NOTE: if you use the "wx" configuration interface, you must also use
 # the "wx" display library.
 #=======================================================================
-config_interface: textconfig
+#config_interface: textconfig
 #config_interface: win32config
 #config_interface: wx
 
@@ -91,7 +91,7 @@ config_interface: textconfig
 #display_library: win32
 #display_library: wx
 #display_library: x
-#display_library: gui_debug
+display_library: x, options="gui_debug"
 
 #=======================================================================
 # CPU:
@@ -185,7 +185,7 @@ config_interface: textconfig
 #  2.2.6 2.6Ghz Intel Core 2 Duo with WinXP/g++ 3.4       21 to 25 Mips
 #  2.2.6 2.1Ghz Athlon XP with Linux 2.6/g++ 3.4          12 to 15 Mips
 #=======================================================================
-cpu: model=ryzen, count=1,, reset_on_triple_fault=0
+cpu: model=corei7_sandy_bridge_2600k, count=1, ips=50000000, reset_on_triple_fault=0
 
 #=======================================================================
 # CPUID:
@@ -857,7 +857,7 @@ debugger_log: -
 #   com4: enabled=1, mode=pipe-client, dev=\\.\pipe\mypipe
 #   com4: enabled=1, mode=pipe-server, dev=\\.\pipe\mypipe
 #=======================================================================
-com1: enabled=1, mode=term, dev=/dev/stdin
+com1: enabled=1, mode=socket-server, dev=127.0.0.1:8000
 
 
 #=======================================================================

src/interrupts.rs

@@ -60,6 +60,7 @@ extern "x86-interrupt" fn double_fault_handler(sf: &mut InterruptStackFrame, e:
 }
 
 use x86_64::structures::idt::PageFaultErrorCode;
+use x86_64::instructions::bochs_breakpoint;
 
 extern "x86-interrupt" fn page_fault_handler(sf: &mut InterruptStackFrame, e: PageFaultErrorCode) {
     // LLVM bug causing misaligned stacks when error codes are present.
@@ -76,9 +77,13 @@ extern "x86-interrupt" fn page_fault_handler(sf: &mut InterruptStackFrame, e: Pa
         error_code = *(&e as *const PageFaultErrorCode).offset(1) as PageFaultErrorCode;
     }
 
-    println!("EXCEPTION: PAGE FAULT");
-    println!("Accessed Address: {:?}", Cr2::read());
-    println!("Error Code: {:?}", error_code);
-    println!("{:#?}", stack_frame);
+    serial_println!("EXCEPTION: PAGE FAULT");
+    serial_println!("Accessed Address: {:?}", Cr2::read());
+    serial_println!("Error Code: {:?}", error_code);
+    serial_println!("{:#?}", stack_frame);
+
+    serial_println!("Halting...");
+    bochs_breakpoint();
+
     hlt_loop();
 }

src/main.rs

@@ -43,7 +43,7 @@ fn kernel_main(boot_info: &'static BootInfo) -> ! {
     #[cfg(test)]
     test_main();
 
-    println!("Preparing nasty fault...");
+
 
     x86_64::instructions::interrupts::int3();
 
@@ -55,12 +55,18 @@ fn kernel_main(boot_info: &'static BootInfo) -> ! {
         level_4_page_table.start_address(),
         flags
     );
+    serial_println!(
+        "Level 4 page table at: {:?}, flags {:?}",
+        level_4_page_table.start_address(),
+        flags
+    );
 
+    serial_println!("Preparing nasty fault...");
     unsafe {
         *(0xdeadbeef as *mut u64) = 42;
     }
 
-    println!("Survived ? oO");
+    serial_println!("Survived ? oO");
 
     // magic break ?
     // x86_64::instructions::bochs_breakpoint();