switched qemu to qemu-system-i386, even though it doesnt change anything useful

kernel-rs/.gdbinit

@@ -1,2 +1,2 @@
-set arch i386:x86-64
-symbol-file build/bluesnow-x86.bin
+set arch i386
+file build/bluesnow-x86.bin

kernel-rs/Cargo.toml

@@ -25,3 +25,7 @@ path = "x86"
 [dependencies.lazy_static]
 version = "1.0.0"
 features = ["spin_no_std"]
+
+[dependencies.compiler_builtins]
+#I'm waiting for somebody to port i386/udivdi3.S ... :(((
+git = "https://github.com/rust-lang-nursery/compiler-builtins"

kernel-rs/Makefile

@@ -12,7 +12,7 @@ all:
 ## COMPILE ASM (nasm)
 asm_source		:= $(wildcard src/arch/$(ARCH)/*.asm)
 asm_object		:= $(patsubst src/arch/$(ARCH)/%.asm, build/arch/$(ARCH)/%.o, $(asm_source))
-NASM			:= /usr/bin/nasm -f elf -g
+NASM			:= /usr/bin/nasm -f elf -gdwarf
 build/arch/$(ARCH)/%.o: src/arch/$(ARCH)/%.asm Makefile
 	@mkdir -p $(shell dirname $@)
 	$(NASM) $< -o $@

kernel-rs/mk/qemu.mk

@@ -6,7 +6,7 @@ else
 	PORTG := 4344
 endif
 
-QEMU		:= qemu-system-x86_64\
+QEMU		:= qemu-system-i386\
 	-gdb tcp::$(PORTG)\
 	-S\
 	-enable-kvm\

kernel-rs/src/arch/x86/boot.asm

@@ -42,7 +42,7 @@ set_up_page_tables:
 	or eax, 0b10000011	; huge + present + writable
 	mov [p2_table + 4], eax
 
-	mov eax, 0x800000	; 8MB -> 12Mb (second page)
+	mov eax, 0x800000	; 8MB -> 12Mb (third page)
 	or eax, 0b10000011	; huge + present + writable
 	mov [p2_table + 8], eax
 

kernel-rs/src/arch/x86/linker.ld

@@ -2,10 +2,6 @@ ENTRY(start)
 OUTPUT_FORMAT(elf32-i386)
 
 SECTIONS {
-	/* GDT for the win */
-	/* . = 0x800; */
-	/* .gdt : {KEEP(*(.gdt))} */
-
 	 /* VGA, cannot use section for this */
 	VGA_PTR = 0xb8000;
 	. = 0xb8000;
@@ -15,6 +11,7 @@ SECTIONS {
 	/* ensure that the multiboot header is at the beginning */
 	.multiboot :
 	{
+		/* KEEP otherwise it gets garbage collected by linker */
 		KEEP(*(.multiboot))
 		. = ALIGN(4K);
 	}
@@ -37,12 +34,6 @@ SECTIONS {
 		. = ALIGN(4K);
 	}
 
-	.debug :
-	{
-		*(.debug_*)
-		. = ALIGN(4K);
-	}
-
 	.gdt :
 	{
 		*(.gdt)
@@ -67,15 +58,15 @@ SECTIONS {
 		. = ALIGN(4K);
 	}
 
-	.stab :
-	{
-		*(.stab)
-		. = ALIGN(4K);
-	}
+	/* .stab : */
+	/* { */
+	/* 	KEEP(*(.stab)) */
+	/* 	. = ALIGN(4K); */
+	/* } */
 
-	.stabstr :
-	{
-		*(.stabstr)
-		. = ALIGN(4K);
-	}
+	/* .stabstr : */
+	/* { */
+	/* 	KEEP(*(.stabstr)) */
+	/* 	. = ALIGN(4K); */
+	/* } */
 }

kernel-rs/src/lib.rs

@@ -46,8 +46,6 @@ pub mod memory;
 pub mod arch;
 pub use arch::x86::consts::*;
 
-// use core::mem;
-// use x86::structures::idt::*;
 /// kernel entry point. arch module is responsible for
 /// calling this once the core has loaded
 pub fn kmain() -> ! {
@@ -78,11 +76,11 @@ pub fn kmain() -> ! {
     // }
     let ip = self::init as *const () as u32;
 
-    unsafe {
-        arch::x86::usermode(ip, sp, 0);
-    }
-    unreachable!()
-    // loop {}
+    // unsafe {
+    //     arch::x86::usermode(ip, sp, 0);
+    // }
+    // unreachable!()
+    loop {}
 }
 
 pub fn init() {

kernel-rs/x86-bluesnow.json

@@ -4,14 +4,14 @@
 	"_comment": "http://llvm.org/docs/LangRef.html#data-layout",
 	"data-layout": "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128",
 
-	"llvm-target": "i686-unknown-none",
+	"llvm-target": "i386-unknown-none",
 	"linker-flavor": "gcc",
-	"no-compiler-rt": true,
-	"os": "bluesnow",
+	"os": "none",
 	"target-endian": "little",
 	"target-pointer-width": "32",
 	"target-c-int-width": "32",
 	"features": "-mmx,-fxsr,-sse,-sse2,+soft-float",
 	"eliminate-frame-pointer": false,
+	"disable-redzone": true,
 	"panic-strategy": "abort"
 }