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added actual code to run

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This commit is contained in:
Morten Delenk 2017-04-23 17:41:25 +00:00
parent 2ccf881b04
commit 2c92af7cb0
14 changed files with 501 additions and 4 deletions
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1
.gitignore vendored
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@ -4,3 +4,4 @@ binutils/
gawk/
builddir/
config.cmake
config.h

1
CMakeLists.txt
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@ -1,3 +1,4 @@
CMAKE_MINIMUM_REQUIRED(VERSION 2.8.0)
INCLUDE(./config.cmake)
FIND_PACKAGE(PythonInterp 3 REQUIRED)
ADD_SUBDIRECTORY(kernel)

12
config.py
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@ -41,3 +41,15 @@ with open("config.cmake", "w") as f:
f.write('SET('+key+' 1)\n')
elif val != False:
f.write('SET('+key+' '+str(val)+')\n')
with open("config.h", "w") as f:
for key, val in config.items():
if val == True:
f.write("#define "+key+" 1\n")
elif val == False:
f.write("#undef "+key+"\n")
elif isinstance(val, int):
f.write("#define "+key+" ("+str(val)+")\n")
else:
f.write("#define "+key+' "'+val+'"\n')

36
kernel/CMakeLists.txt
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@ -1,2 +1,36 @@
ENABLE_LANGUAGE(C CXX ASM-ATT)
INCLUDE(arch/$ARCH/$SYSTEM/config.cmake)
FUNCTION(LOAD_PROFILE ISA PLATFORM)
# Obtain sources for the ISA
FILE(GLOB ISA_SRCS arch/${ISA}/*.c arch/${ISA}/*.s arch/${ISA}/*.cpp)
FILE(GLOB PLATFORM_SRCS arch/${ISA}/${PLATFORM}/*.c arch/${ISA}/${PLATFORM}/*.s arch/${ISA}/${PLATFORM}/*.cpp)
# Load flags associated with ISA and Profile
INCLUDE("arch/${ISA}/flags.cmake")
INCLUDE("arch/${ISA}/${PLATFORM}/flags.cmake")
# Now export our output variables
SET(ISA_SRCS ${ISA_SRCS} PARENT_SCOPE)
SET(PLATFORM_SRCS ${PLATFORM_SRCS} PARENT_SCOPE)
SET(PLATFORM_LAYOUT "arch/${ISA}/${PLATFORM}/layout.ld" PARENT_SCOPE)
# And specific flags
SET(ISA_C_FLAGS ${ISA_C_FLAGS} PARENT_SCOPE)
SET(ISA_CXX_FLAGS ${ISA_CXX_FLAGS} PARENT_SCOPE)
SET(ISA_ASM_FLAGS ${ISA_ASM_FLAGS} PARENT_SCOPE)
SET(PLATFORM_C_FLAGS ${PLATFORM_C_FLAGS} PARENT_SCOPE)
SET(PLATFORM_CXX_FLAGS ${PLATFORM_CXX_FLAGS} PARENT_SCOPE)
SET(PLATFORM_ASM_FLAGS ${PLATFORM_ASM_FLAGS} PARENT_SCOPE)
SET(ISA_LINKER_FLAGS ${ISA_LINKER_FLAGS} PARENT_SCOPE)
SET(PLATFORM_LINKER_FLAGS ${ISA_LINKER_FLAGS} PARENT_SCOPE)
ENDFUNCTION(LOAD_PROFILE)
FILE(GLOB_RECURSE GENERIC_SRCS src/*.c src/*.cpp)
LOAD_PROFILE(${ARCH} ${SYSTEM})
ADD_EXECUTABLE(kernel ${PLATFORM_SRCS} ${ISA_SRCS} ${GENERIC_SRCS})
SET(CMAKE_ASM-ATT_COMPILE_OBJECT
"<CMAKE_C_COMPILER> -m32 -x assembler-with-cpp -I../../ -I../../libk/include/ -I../../kernel/src/include/ ${ISA_ASM_FLAGS} ${PLATFORM_ASM_FLAGS} -c -o <OBJECT> <SOURCE>")
SET(CMAKE_C_FLAGS "-m32 -w -Werror -Wno-unused -Wno-unused-variable -std=c11 -I../../ -I../../libk/include/ -I../../kernel/src/include/ ${ISA_C_FLAGS} ${PLATFORM_C_FLAGS}")
SET(CMAKE_CXX_FLAGS "-m32 -w -Werror -Wno-unused -Wno-unused-variable -fno-rtti -fno-exceptions -std=gnu++17 -I../../ -I../../libk/include/ -I../../kernel/src/include/ ${ISA_CXX_FLAGS} ${PLATFORM_CXX_FLAGS}")
SET_TARGET_PROPERTIES(kernel PROPERTIES LINK_FLAGS
"-T ../../kernel/${PLATFORM_LAYOUT} -N ${ISA_LINKER_FLAGS} ${PLATFORM_LINKER_FLAGS} -nostdlib -nodefaultlibs -lgcc -Wl,--gc-sections")

2
kernel/arch/x86/flags.cmake Normal file
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@ -0,0 +1,2 @@
SET(ISA_C_FLAGS "-m32 -I../../kernel/arch/x86/include/")
SET(ISA_CXX_FLAGS "${ISA_C_FLAGS}")

3
kernel/arch/x86/pc/flags.cmake Normal file
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@ -0,0 +1,3 @@
SET(PLATFORM_C_FLAGS "-I../../kernel/arch/x86/pc/include")
SET(PLATFORM_CXX_FLAGS "${PLATFORM_C_FLAGS}")
SET(PLATFORM_ASM_FLAGS "${PLATFORM_C_FLAGS}")

274
kernel/arch/x86/pc/include/multiboot.h Normal file
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@ -0,0 +1,274 @@
/* multiboot.h - Multiboot header file. */
/* Copyright (C) 1999,2003,2007,2008,2009,2010 Free Software Foundation, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY
* DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1
/* How many bytes from the start of the file we search for the header. */
#define MULTIBOOT_SEARCH 8192
#define MULTIBOOT_HEADER_ALIGN 4
/* The magic field should contain this. */
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
/* This should be in %eax. */
#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
/* Alignment of multiboot modules. */
#define MULTIBOOT_MOD_ALIGN 0x00001000
/* Alignment of the multiboot info structure. */
#define MULTIBOOT_INFO_ALIGN 0x00000004
/* Flags set in the 'flags' member of the multiboot header. */
/* Align all boot modules on i386 page (4KB) boundaries. */
#define MULTIBOOT_PAGE_ALIGN 0x00000001
/* Must pass memory information to OS. */
#define MULTIBOOT_MEMORY_INFO 0x00000002
/* Must pass video information to OS. */
#define MULTIBOOT_VIDEO_MODE 0x00000004
/* This flag indicates the use of the address fields in the header. */
#define MULTIBOOT_AOUT_KLUDGE 0x00010000
/* Flags to be set in the 'flags' member of the multiboot info structure. */
/* is there basic lower/upper memory information? */
#define MULTIBOOT_INFO_MEMORY 0x00000001
/* is there a boot device set? */
#define MULTIBOOT_INFO_BOOTDEV 0x00000002
/* is the command-line defined? */
#define MULTIBOOT_INFO_CMDLINE 0x00000004
/* are there modules to do something with? */
#define MULTIBOOT_INFO_MODS 0x00000008
/* These next two are mutually exclusive */
/* is there a symbol table loaded? */
#define MULTIBOOT_INFO_AOUT_SYMS 0x00000010
/* is there an ELF section header table? */
#define MULTIBOOT_INFO_ELF_SHDR 0X00000020
/* is there a full memory map? */
#define MULTIBOOT_INFO_MEM_MAP 0x00000040
/* Is there drive info? */
#define MULTIBOOT_INFO_DRIVE_INFO 0x00000080
/* Is there a config table? */
#define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100
/* Is there a boot loader name? */
#define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200
/* Is there a APM table? */
#define MULTIBOOT_INFO_APM_TABLE 0x00000400
/* Is there video information? */
#define MULTIBOOT_INFO_VBE_INFO 0x00000800
#define MULTIBOOT_INFO_FRAMEBUFFER_INFO 0x00001000
#ifndef ASM_FILE
typedef unsigned char multiboot_uint8_t;
typedef unsigned short multiboot_uint16_t;
typedef unsigned int multiboot_uint32_t;
typedef unsigned long long multiboot_uint64_t;
struct multiboot_header
{
/* Must be MULTIBOOT_MAGIC - see above. */
multiboot_uint32_t magic;
/* Feature flags. */
multiboot_uint32_t flags;
/* The above fields plus this one must equal 0 mod 2^32. */
multiboot_uint32_t checksum;
/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
multiboot_uint32_t header_addr;
multiboot_uint32_t load_addr;
multiboot_uint32_t load_end_addr;
multiboot_uint32_t bss_end_addr;
multiboot_uint32_t entry_addr;
/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
multiboot_uint32_t mode_type;
multiboot_uint32_t width;
multiboot_uint32_t height;
multiboot_uint32_t depth;
};
/* The symbol table for a.out. */
struct multiboot_aout_symbol_table
{
multiboot_uint32_t tabsize;
multiboot_uint32_t strsize;
multiboot_uint32_t addr;
multiboot_uint32_t reserved;
};
typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
/* The section header table for ELF. */
struct multiboot_elf_section_header_table
{
multiboot_uint32_t num;
multiboot_uint32_t size;
multiboot_uint32_t addr;
multiboot_uint32_t shndx;
};
typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
struct multiboot_info
{
/* Multiboot info version number */
multiboot_uint32_t flags;
/* Available memory from BIOS */
multiboot_uint32_t mem_lower;
multiboot_uint32_t mem_upper;
/* "root" partition */
multiboot_uint32_t boot_device;
/* Kernel command line */
multiboot_uint32_t cmdline;
/* Boot-Module list */
multiboot_uint32_t mods_count;
multiboot_uint32_t mods_addr;
union
{
multiboot_aout_symbol_table_t aout_sym;
multiboot_elf_section_header_table_t elf_sec;
} u;
/* Memory Mapping buffer */
multiboot_uint32_t mmap_length;
multiboot_uint32_t mmap_addr;
/* Drive Info buffer */
multiboot_uint32_t drives_length;
multiboot_uint32_t drives_addr;
/* ROM configuration table */
multiboot_uint32_t config_table;
/* Boot Loader Name */
multiboot_uint32_t boot_loader_name;
/* APM table */
multiboot_uint32_t apm_table;
/* Video */
multiboot_uint32_t vbe_control_info;
multiboot_uint32_t vbe_mode_info;
multiboot_uint16_t vbe_mode;
multiboot_uint16_t vbe_interface_seg;
multiboot_uint16_t vbe_interface_off;
multiboot_uint16_t vbe_interface_len;
multiboot_uint64_t framebuffer_addr;
multiboot_uint32_t framebuffer_pitch;
multiboot_uint32_t framebuffer_width;
multiboot_uint32_t framebuffer_height;
multiboot_uint8_t framebuffer_bpp;
#define MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED 0
#define MULTIBOOT_FRAMEBUFFER_TYPE_RGB 1
#define MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT 2
multiboot_uint8_t framebuffer_type;
union
{
struct
{
multiboot_uint32_t framebuffer_palette_addr;
multiboot_uint16_t framebuffer_palette_num_colors;
};
struct
{
multiboot_uint8_t framebuffer_red_field_position;
multiboot_uint8_t framebuffer_red_mask_size;
multiboot_uint8_t framebuffer_green_field_position;
multiboot_uint8_t framebuffer_green_mask_size;
multiboot_uint8_t framebuffer_blue_field_position;
multiboot_uint8_t framebuffer_blue_mask_size;
};
};
};
typedef struct multiboot_info multiboot_info_t;
struct multiboot_color
{
multiboot_uint8_t red;
multiboot_uint8_t green;
multiboot_uint8_t blue;
};
struct multiboot_mmap_entry
{
multiboot_uint32_t size;
multiboot_uint64_t addr;
multiboot_uint64_t len;
#define MULTIBOOT_MEMORY_AVAILABLE 1
#define MULTIBOOT_MEMORY_RESERVED 2
#define MULTIBOOT_MEMORY_ACPI_RECLAIMABLE 3
#define MULTIBOOT_MEMORY_NVS 4
#define MULTIBOOT_MEMORY_BADRAM 5
multiboot_uint32_t type;
} GRUB_PACKED;
typedef struct multiboot_mmap_entry multiboot_memory_map_t;
struct multiboot_mod_list
{
/* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
multiboot_uint32_t mod_start;
multiboot_uint32_t mod_end;
/* Module command line */
multiboot_uint32_t cmdline;
/* padding to take it to 16 bytes (must be zero) */
multiboot_uint32_t pad;
};
typedef struct multiboot_mod_list multiboot_module_t;
/* APM BIOS info. */
struct multiboot_apm_info
{
grub_uint16_t version;
grub_uint16_t cseg;
grub_uint32_t offset;
grub_uint16_t cseg_16;
grub_uint16_t dseg;
grub_uint16_t flags;
grub_uint16_t cseg_len;
grub_uint16_t cseg_16_len;
grub_uint16_t dseg_len;
};
#endif /* ! ASM_FILE */
#endif /* ! MULTIBOOT_HEADER */

36
kernel/arch/x86/pc/layout.ld Normal file
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@ -0,0 +1,36 @@
ENTRY(_start)
SECTIONS {
. = 0x100000;
kernel_start = .;
.text : {
KEEP(*(.text.boot));
*(.text)
}
.data : {
start_ctors = .;
KEEP(*(.init_array));
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*)));
KEEP(*(.ctors));
end_ctors = .;
start_dtors = .;
KEEP(*(.fini_array));
KEEP(*(.fini_array.*));
KEEP(*(.dtors));
end_dtors = .;
start_eh_frame = .;
KEEP(*(.eh_frame));
KEEP(*(.eh_frame.*));
QUAD(0);
KEEP(*(.gcc_except_table));
KEEP(*(.gcc_except_table.*));
*(.data)
}
.rodata : {
*(.rodata)
}
.bss : {
*(.bss)
*(COMMON)
}
kernel_end = .;
}

9
kernel/arch/x86/pc/start.c Normal file
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@ -0,0 +1,9 @@
void start() {
const char hw[] = "Hello World!";
int i;
char* video = (char*) 0xb8000;
for (i = 0; hw[i] != '\0'; i++) {
video[i * 2] = hw[i];
video[i * 2 + 1] = 0x07;
}
}

116
kernel/arch/x86/pc/start.s Normal file
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@ -0,0 +1,116 @@
#define ASM_FILE 1
#include <config.h>
#include <multiboot.h>
.section .text.boot
.global _start
_start:
jmp _start2
.align MULTIBOOT_HEADER_ALIGN
.int MULTIBOOT_HEADER_MAGIC
.int 0x0
.int -(MULTIBOOT_HEADER_MAGIC)
.align MULTIBOOT_HEADER_ALIGN
.extern start
_start2:
lgdt gdtr
mov $0x10, %cx
mov %cx, %ds
mov %cx, %es
mov %cx, %fs
mov %cx, %gs
mov %cx, %ss
ljmp $0x08, $_start3
_start3:
mov $kernel_stack, %esp //Initialize Stack
push %ebx
push %eax //Push arguments to start()
#ifdef ENABLE_FPU
finit //Enable FPU
#endif
#ifdef ENABLE_SSE
//Check for SSE
mov $1, %eax
cpuid
test $1<<25, %edx
jz _noSSE
mov %cr0, %eax
and $0xFFFB, %ax
or $0x2, %ax
mov %eax, %cr0
mov %cr4, %eax
or $3<<9, %ax
mov %eax, %cr4
_noSSE:
#endif
call start
_stop:
cli
hlt
jmp _stop
.section .data
gdtr:
.word 9 * 8
.int gdt
gdt:
.quad 0 //NULL
//32-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x9A
.byte 0xCF
.byte 0x00
//32-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x92
.byte 0xCF
.byte 00
//32-bit user code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xFA
.byte 0xCF
.byte 0x00
//32-bit user data
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xF2
.byte 0xCF
.byte 00
//64-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x9B
.byte 0xAF
.byte 0x00
//64-bit kernel code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0x93
.byte 0xCF
.byte 00
//64-bit user code
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xFB
.byte 0xAF
.byte 0x00
//64-bit user data
.word 0xFFFF
.word 0x0000
.byte 0x00
.byte 0xF3
.byte 0xCF
.byte 00
.section .bss
.space 16384
kernel_stack:

9
readme Normal file
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@ -0,0 +1,9 @@
to build mtgos you need the cross compilers, whose makefile is included in cross/
Quick walkthrough of the steps needed for building:
1) ./config.py - this will ask you a couple questions needed for building and create a appropriate config.cmake and config.h
2) mkdir -pv build; cd build - this will enter a build directory, as an in-dir build is not supported
3) cmake -DCMAKE_TOOLCHAIN_FILE=../toolchains/<toolchain name here>.cmake ..
4) make
5) Kernel is in kernel/kernel

2
toolchains/arm-none-eabi.cmake
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@ -5,7 +5,7 @@ SET(CMAKE_SYSTEM_VERSION 0)
SET(CMAKE_C_COMPILER $ENV{HOME}/opt/bin/arm-none-eabi-gcc)
#CMAKE_FORCE_CXX_COMPILER($ENV{HOME}/opt/bin/i686-elf-g++ GNU)
SET(CMAKE_CXX_COMPILER $ENV{HOME}/opt/bin/arm-none-eabi-g++)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/arm-none-eabi-as)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/arm-none-eabi-gcc)
SET(CMAKE_FIND_ROOT_PATH $ENV{HOME}/opt)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)

2
toolchains/i686-elf.cmake
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@ -5,7 +5,7 @@ SET(CMAKE_SYSTEM_VERSION 0)
SET(CMAKE_C_COMPILER $ENV{HOME}/opt/bin/i686-elf-gcc)
#CMAKE_FORCE_CXX_COMPILER($ENV{HOME}/opt/bin/i686-elf-g++ GNU)
SET(CMAKE_CXX_COMPILER $ENV{HOME}/opt/bin/i686-elf-g++)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/i686-elf-as)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/i686-elf-gcc)
SET(CMAKE_FIND_ROOT_PATH $ENV{HOME}/opt)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)

2
toolchains/x86_64-elf.cmake
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@ -5,7 +5,7 @@ SET(CMAKE_SYSTEM_VERSION 0)
SET(CMAKE_C_COMPILER $ENV{HOME}/opt/bin/x86_64-elf-gcc)
#CMAKE_FORCE_CXX_COMPILER($ENV{HOME}/opt/bin/i686-elf-g++ GNU)
SET(CMAKE_CXX_COMPILER $ENV{HOME}/opt/bin/x86_64-elf-g++)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/x86_64-elf-as)
SET(CMAKE_ASM_COMPILER $ENV{HOME}/opt/bin/x86_64-elf-gcc)
SET(CMAKE_FIND_ROOT_PATH $ENV{HOME}/opt)
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)