Generate HULK binary

Add initial HULK source and linker script
HELLO: Zero out page tables after allocating, before using
2022-03-18 22:01:27 -04:00 · 2022-03-18 21:55:38 -04:00 · 2022-03-18 21:21:00 -04:00 · 2022-03-18 21:19:06 -04:00 · 2022-03-18 21:15:58 -04:00 · 2022-03-18 16:40:46 -04:00
39 changed files with 611 additions and 139 deletions
@@ -1,3 +1,3 @@
 .rscons*
-/i686-elf-gcc/
+/x86_64-elf-gcc/
 /build/
@@ -0,0 +1,3 @@
+[submodule "uefi-d"]
+	path = uefi-d
+	url = git://github.com/kubasz/uefi-d
@@ -1,98 +1,31 @@
-path_prepend "i686-elf-gcc/bin"
-
-configure do
-  rscons "i686-elf-gcc.rb", "-b", "#{build_dir}/i686-elf-gcc"
-  check_c_compiler "i686-elf-gcc"
-  check_program "genext2fs"
-  check_program "grub-mkstandalone"
-  check_program "mformat", on_fail: "Install the mtools package"
-  check_program "xorriso"
-  check_cfg package: "freetype2", on_fail: "Install libfreetype-dev", use: "freetype"
-end
-
 require "tmpdir"

-# EFI (w/ GRUB) partition size (MiB)
-EFI_PART_SIZE = 8
-# HOS partition size (MiB)
-HOS_PART_SIZE = 4
-# Kernel default font size
-KFONT_SIZE = 15
+project_name "HOS"
+path_prepend "x86_64-elf-gcc/bin"

-class BiosImage < Builder
-  def run(options)
-    unless @cache.up_to_date?(@target, nil, @sources, @env)
-      print_run_message("Generating BIOS boot image #{@target}", nil)
-      Dir.mktmpdir do |tmpdir|
-        # Create iso directory.
-        FileUtils.mkdir_p("#{tmpdir}/iso/boot/grub")
-        File.open("#{tmpdir}/iso/boot/grub/grub.cfg", "wb") do |fh|
-          fh.write(<<EOF)
-set default="0"
-set timeout=1
-menuentry "HOS" {
-insmod multiboot2
-multiboot2 /hos.elf
-}
-EOF
-        end
-        @sources.each do |source|
-          FileUtils.cp(source, "#{tmpdir}/iso")
-        end
-        # Build bootable GRUB image.
-        system(*%W[grub-mkrescue -o #{@target} #{tmpdir}/iso], err: "#{@env.build_root}/grub-mkrescue.log")
-      end
-      @cache.register_build(@target, nil, @sources, @env)
-    end
-    true
-  end
+configure do
+  rscons "x86_64-elf-gcc.rb", "-b", "#{build_dir}/x86_64-elf-gcc"
+  check_d_compiler "ldc2", use: "ldc2"
+  check_c_compiler "x86_64-w64-mingw32-gcc", use: "x86_64-w64-mingw32-gcc"
+  check_c_compiler "x86_64-elf-gcc", use: "x86_64-elf-gcc"
+  check_c_compiler
+  check_program "mformat", on_fail: "Install the mtools package"
+  check_cfg package: "freetype2", on_fail: "Install libfreetype-dev", use: "freetype"
+  sh %w[git submodule update --init]
 end

-class EfiImage < Builder
+# Kernel default font size.
+KFONT_SIZE = 15
+
+class Image < Builder
  def run(options)
    unless @cache.up_to_date?(@target, nil, @sources, @env)
-      print_run_message("Generating EFI boot image #{@target}", nil)
-      Dir.mktmpdir do |tmpdir|
-        # Build a standalone GRUB.
-        File.open("#{tmpdir}/grub.cfg", "wb") do |fh|
-          fh.write(<<EOF)
-insmod part_gpt
-configfile (hd0,gpt2)/grub.cfg
-EOF
-        end
-        system(*%W[grub-mkstandalone -O x86_64-efi -o #{tmpdir}/BOOTX64.EFI boot/grub/grub.cfg=#{tmpdir}/grub.cfg])
-        # Create EFI partition.
-        system(*%W[dd if=/dev/zero of=#{tmpdir}/efi.part bs=1M count=#{EFI_PART_SIZE}], err: "/dev/null")
-        system(*%W[mformat -i #{tmpdir}/efi.part ::])
-        system(*%W[mmd -i #{tmpdir}/efi.part ::/EFI])
-        system(*%W[mmd -i #{tmpdir}/efi.part ::/EFI/BOOT])
-        system(*%W[mcopy -i #{tmpdir}/efi.part #{tmpdir}/BOOTX64.EFI ::/EFI/BOOT])
-        # Create ext2 HOS partition.
-        FileUtils.mkdir_p("#{tmpdir}/ext2")
-        @sources.each do |source|
-          FileUtils.cp(source, "#{tmpdir}/ext2")
-        end
-        File.open("#{tmpdir}/ext2/grub.cfg", "wb") do |fh|
-          fh.write(<<EOF)
-set default="0"
-set timeout=1
-menuentry "HOS" {
-insmod part_gpt
-insmod multiboot2
-set root=(hd0,gpt2)
-multiboot2 /hos.elf
-}
-EOF
-        end
-        system(*%W[genext2fs -b #{HOS_PART_SIZE * 1024} -d #{tmpdir}/ext2 #{tmpdir}/ext2.part])
-        # Create full disk image.
-        system(*%W[dd if=/dev/zero of=#{@target} bs=1M count=#{EFI_PART_SIZE + HOS_PART_SIZE + 2}], err: "/dev/null")
-        system(*%W[parted -s #{@target} mklabel gpt])
-        system(*%W[parted -s #{@target} mkpart efi 1MiB #{EFI_PART_SIZE + 1}MiB])
-        system(*%W[parted -s #{@target} mkpart hos #{EFI_PART_SIZE + 1}MiB #{EFI_PART_SIZE + HOS_PART_SIZE + 1}MiB])
-        system(*%W[dd if=#{tmpdir}/efi.part of=#{@target} bs=1M seek=1 conv=notrunc], err: "/dev/null")
-        system(*%W[dd if=#{tmpdir}/ext2.part of=#{@target} bs=1M seek=#{1 + EFI_PART_SIZE} conv=notrunc], err: "/dev/null")
-      end
+      print_run_message("Creating disk image <target>#{@target}<reset>", nil)
+      File.binwrite(@target, "\0" * (1440 * 1024))
+      system(*%W[mformat -i #{@target} -f 1440 ::])
+      system(*%W[mmd -i #{@target} ::/EFI])
+      system(*%W[mmd -i #{@target} ::/EFI/BOOT])
+      system(*%W[mcopy -i #{@target} #{@sources.first} ::/EFI/BOOT])
      @cache.register_build(@target, nil, @sources, @env)
    end
    true
@@ -112,55 +45,46 @@ class FontGen < Builder
  end
 end

-class Size < Builder
-  def run(options)
-    if @command
-      finalize_command
-    else
-      @vars["_SOURCES"] = @sources
-      @vars["_TARGET"] = @target
-      command = @env.build_command(%w[${SIZE} ${_SOURCES}], @vars)
-      standard_command("Size <target>#{@target}<reset>", command, stdout: @target)
-    end
-  end
-end
-
-# FontGen Environment
 fontgen_env = env "fontgen", use: "freetype" do |env|
-  env["CC"] = "gcc"
-  env.Program("^/fontgen.bin", glob("fontgen/**/*.c"))
+  env.Program("^/fontgen", glob("src/fontgen/**/*.c"))
 end

-# Kernel Environment
-kernel_env = env "kernel" do |env|
-  env.add_builder(EfiImage)
-  env.add_builder(BiosImage)
-  env.add_builder(FontGen)
-  env.add_builder(Size)
-  env["OBJDUMP"] = "i686-elf-objdump"
-  env["SIZE"] = "i686-elf-size"
-  env["CCFLAGS"] += %w[-ffreestanding -Wall -O2]
-  env["LDFLAGS"] += %w[-ffreestanding -nostdlib -T src/link.ld]
-  env["LDFLAGS"] += %W[-Wl,-Map,${_TARGET}.map]
-  env["LIBS"] += %w[gcc]
-  env.FontGen("^/kfont/kfont.c", "font/Hack-Regular.ttf",
-             "fontgen" => fontgen_env.expand("^/fontgen.bin"))
-  env.barrier
-  env["CPPPATH"] += ["#{env.build_root}/kfont"]
-  env.Program("^/hos.elf", glob("src/**/*.{S,c}") + ["^/kfont/kfont.c"])
-  env.depends("#{env.build_root}/hos.elf", "src/link.ld")
-  env.Disassemble("^/hos.elf.txt", "^/hos.elf")
-  env.Size("^/hos.elf.size", "^/hos.elf")
-  env.EfiImage("^/hos-efi.img", %w[^/hos.elf])
-  env.BiosImage("^/hos.img", %w[^/hos.elf])
+hello_env = env "hello", use: %w[ldc2 x86_64-w64-mingw32-gcc] do |env|
+  env.add_builder(Image)
+  env["sources"] = glob("src/hello/**/*.d")
+  env["sources"] += glob("uefi-d/source/**/*.d")
+  env["DFLAGS"] += %w[-mtriple=x86_64-unknown-windows-coff --betterC -release -O3 --wi --enable-cross-module-inlining]
+  env["D_IMPORT_PATH"] += %w[src/hello src/hulk uefi-d/source src/common]
+  env["LD"] = "x86_64-w64-mingw32-gcc"
+  env["LDFLAGS"] += %w[-nostdlib -Wl,-dll -shared -Wl,--subsystem,10 -e efi_main -Wl,-Map,${_TARGET}.map]
+  env["LDCMD"] = %w[${LD} -o ${_TARGET} ${LDFLAGS} ${_SOURCES} ${LIBDIRPREFIX}${LIBPATH} ${LIBLINKPREFIX}${LIBS}]
+  env["OBJDUMP"] = "x86_64-w64-mingw32-objdump"
+  env.Program("^/BOOTX64.EFI", "${sources}")
+  env.Disassemble("^/BOOTX64.txt", "^/BOOTX64.EFI")
+  env.Image("^/hos.img", "^/BOOTX64.EFI")
+end
+
+hulk_env = env "hulk", use: %w[ldc2 x86_64-elf-gcc] do |env|
+  env["sources"] = glob("src/hulk/**/*.d")
+  env["DFLAGS"] += %w[-mtriple=x86_64-unknown-elf --betterC -release -O3 --wi --enable-cross-module-inlining]
+  env["D_IMPORT_PATH"] += %w[src/hulk src/common]
+  env["LD"] = "x86_64-elf-gcc"
+  env["LDFLAGS"] += %w[-nostdlib -Tsrc/hulk/hulk.ld -Wl,-Map,${_TARGET}.map]
+  env["LDCMD"] = %w[${LD} -o ${_TARGET} ${LDFLAGS} ${_SOURCES} ${LIBDIRPREFIX}${LIBPATH} ${LIBLINKPREFIX}${LIBS}]
+  env["OBJDUMP"] = "x86_64-elf-objdump"
+  env["OBJCOPY"] = "x86_64-elf-objcopy"
+  env.Program("^/hulk.elf", "${sources}")
+  env.depends("^/hulk.elf", "src/hulk/hulk.ld")
+  env.Disassemble("^/hulk.txt", "^/hulk.elf")
+  env.Command("^/hulk.bin", "^/hulk.elf",
+              "CMD" => %W[${OBJCOPY} -O binary ${_SOURCES} ${_TARGET}],
+              "CMD_DESC" => "Convert ELF to binary:")
 end

 task "run", desc: "Run HOS in QEMU" do
-  img = kernel_env.expand("^/hos.img")
-  sh %W[qemu-system-x86_64 -hda #{img}]
-end
-
-task "run-efi", desc: "Run HOS EFI in QEMU" do
-  img = kernel_env.expand("^/hos-efi.img")
-  sh %W[qemu-system-x86_64 -bios OVMF.fd -hda #{img}]
+  Dir.mktmpdir do |tmpdir|
+    img = hello_env.expand("^/hos.img")
+    FileUtils.cp(img, tmpdir)
+    sh %W[qemu-system-x86_64 -bios OVMF.fd -drive file=#{tmpdir}/hos.img,format=raw]
+  end
 end
@@ -24,7 +24,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


-script = File.join(File.dirname(__FILE__), ".rscons-3.0.0-077c0388ca4d1d902141299abcc4b8f6.rb")
+script = File.join(File.dirname(__FILE__), ".rscons-3.0.2-c49c635f1e4166223367979510498b28.rb")
 unless File.exists?(script)
  if File.read(__FILE__, mode: "rb") =~ /^#==>(.*)/
    require "zlib"
@@ -43,4 +43,4 @@ load script
 if __FILE__ == $0
  Rscons::Cli.new.run(ARGV)
 end
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+#==>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 truncated
@@ -0,0 +1,26 @@
+import ldc.llvmasm;
+
+ulong read_cr0()
+{
+    return __asm!ulong("mov %cr0, %rax", "={rax}");
+}
+
+ulong read_cr2()
+{
+    return __asm!ulong("mov %cr2, %rax", "={rax}");
+}
+
+ulong read_cr3()
+{
+    return __asm!ulong("mov %cr3, %rax", "={rax}");
+}
+
+void write_cr3(ulong v)
+{
+    __asm("mov $0, %cr3", "r", v);
+}
+
+ulong read_cr4()
+{
+    return __asm!ulong("mov %cr4, %rax", "={rax}");
+}
@@ -0,0 +1,57 @@
+import ldc.llvmasm;
+
+void memset(void * dest, ubyte v, size_t n)
+{
+    __asm("rep stosb",
+          "{al},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
+          v, n, dest);
+}
+
+void memset16(void * dest, ushort v, size_t n)
+{
+    __asm("rep stosw",
+          "{ax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
+          v, n, dest);
+}
+
+void memset32(void * dest, uint v, size_t n)
+{
+    __asm("rep stosl",
+          "{eax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
+          v, n, dest);
+}
+
+void memset64(void * dest, ulong v, size_t n)
+{
+    __asm("rep stosq",
+          "{rax},{rcx},{rdi},~{rcx},~{rdi},~{memory}",
+          v, n, dest);
+}
+
+void memcpy(void * dest, void * src, size_t n)
+{
+    __asm("rep movsb",
+          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
+          n, src, dest);
+}
+
+void memcpy16(void * dest, void * src, size_t n)
+{
+    __asm("rep movsw",
+          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
+          n, src, dest);
+}
+
+void memcpy32(void * dest, void * src, size_t n)
+{
+    __asm("rep movsl",
+          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
+          n, src, dest);
+}
+
+void memcpy64(void * dest, void * src, size_t n)
+{
+    __asm("rep movsq",
+          "{rcx},{rsi},{rdi},~{rcx},~{rsi},~{rdi},~{memory}",
+          n, src, dest);
+}
@@ -0,0 +1,33 @@
+struct PageTableEntry
+{
+    ulong entry;
+
+    this(ulong address, ulong no_execute, ulong global,
+            ulong huge, ulong disable_cache, ulong write_through, ulong user,
+            ulong writable, ulong present)
+    {
+        entry = (present |
+                (writable << 1) |
+                (user << 2) |
+                (write_through << 3) |
+                (disable_cache << 4) |
+                (huge << 7) |
+                (global << 8) |
+                (no_execute << 63)) | address;
+    }
+
+    bool present()
+    {
+        return (entry & 0x1u) != 0u;
+    }
+
+    PageTableEntry * next()
+    {
+        return cast(PageTableEntry *)(entry & 0x7FFF_FFFF_FFFF_F000u);
+    }
+
+    static ulong page_table_index(ulong address, size_t level)
+    {
+        return ((address >> (39u - 9u * level)) & 0x1FFu);
+    }
+}
@@ -0,0 +1,215 @@
+import uefi;
+import output;
+import scratch;
+import hulk.bootinfo;
+import hos.page_table;
+import hos.cpu;
+import hos.memory;
+
+__gshared EFI_SYSTEM_TABLE * st;
+__gshared BootInfo bootinfo;
+__gshared UINTN memory_map_key;
+
+private void wait_key()
+{
+    writeln("Press any key...");
+    st.ConIn.Reset(st.ConIn, FALSE);
+    EFI_INPUT_KEY key;
+    while (st.ConIn.ReadKeyStroke(st.ConIn, &key) == EFI_NOT_READY)
+    {
+    }
+}
+
+private bool in_qemu()
+{
+    ulong * firmware_vendor = cast(ulong *) st.FirmwareVendor;
+    ulong fv1 = firmware_vendor[0];
+    return fv1 ==
+        ((cast(ulong)'E') |
+         (cast(ulong)'D' << 16) |
+         (cast(ulong)'K' << 32) |
+         (cast(ulong)' ' << 48));
+}
+
+private bool set_graphics_mode()
+{
+    uint max_horizontal_resolution = in_qemu() ? 1920u : 0xFFFFFFFFu;
+    UINTN buffer_size = scratch_free();
+    EFI_GUID gop_guid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
+    EFI_HANDLE * handles = cast(EFI_HANDLE *)scratch_current();
+    EFI_STATUS status = st.BootServices.LocateHandle(ByProtocol,
+            &gop_guid, null, &buffer_size, handles);
+    if (status != EFI_SUCCESS)
+    {
+        writeln("LocateHandle: error %x", status);
+        return false;
+    }
+    EFI_HANDLE gop_handle = handles[0];
+    EFI_HANDLE gop_interface;
+    status = st.BootServices.HandleProtocol(gop_handle,
+            &gop_guid, &gop_interface);
+    if (status != EFI_SUCCESS)
+    {
+        writeln("HandleProtocol: error %x", status);
+        return false;
+    }
+    if (gop_interface == null)
+    {
+        writeln("null interface from HandleProtocol");
+        return false;
+    }
+    EFI_GRAPHICS_OUTPUT_PROTOCOL * gop = cast(EFI_GRAPHICS_OUTPUT_PROTOCOL *)gop_interface;
+    UINTN info_size;
+    EFI_GRAPHICS_OUTPUT_MODE_INFORMATION * info;
+    uint best_width;
+    uint best_mode_number;
+    for (uint mode_number = 0u;
+         (status = gop.QueryMode(gop, mode_number, &info_size, &info)) == EFI_SUCCESS;
+         mode_number++)
+    {
+        if ((info.HorizontalResolution > best_width) &&
+            (info.HorizontalResolution <= max_horizontal_resolution))
+        {
+            best_width = info.HorizontalResolution;
+            best_mode_number = mode_number;
+        }
+        st.BootServices.FreePool(info);
+    }
+    if ((status = gop.SetMode(gop, best_mode_number)) != EFI_SUCCESS)
+    {
+        writeln("SetMode: Error %x\n", status);
+        return false;
+    }
+    bootinfo.fb.buffer = cast(uint *)gop.Mode.FrameBufferBase;
+    bootinfo.fb.width = gop.Mode.Info.HorizontalResolution;
+    bootinfo.fb.height = gop.Mode.Info.VerticalResolution;
+    bootinfo.fb.stride = gop.Mode.Info.PixelsPerScanLine;
+    bootinfo.fb.format = gop.Mode.Info.PixelFormat;
+    return true;
+}
+
+private bool get_memory_map()
+{
+    UINTN memory_map_size = scratch_free();
+    UINTN descriptor_size;
+    UINT32 descriptor_version;
+    ubyte * scratch_base = scratch_current();
+    UINTN status = st.BootServices.GetMemoryMap(
+            &memory_map_size,
+            cast(EFI_MEMORY_DESCRIPTOR *)scratch_base,
+            &memory_map_key,
+            &descriptor_size,
+            &descriptor_version);
+    if (status != EFI_SUCCESS)
+    {
+        writeln("GetMemoryMap: Error %x", status);
+        return false;
+    }
+    size_t n_entries = memory_map_size / descriptor_size;
+    size_t di;
+    for (size_t i = 0u; i < n_entries; i++)
+    {
+        EFI_MEMORY_DESCRIPTOR * descriptor = cast(EFI_MEMORY_DESCRIPTOR *)&scratch_base[i * descriptor_size];
+        if ((descriptor.Type == EfiConventionalMemory) ||
+            (descriptor.Type == EfiBootServicesCode) ||
+            (descriptor.Type == EfiBootServicesData))
+        {
+            bootinfo.memory_map[di].base = descriptor.PhysicalStart;
+            bootinfo.memory_map[di].size = descriptor.NumberOfPages * 4096u;
+            di++;
+        }
+    }
+    bootinfo.memory_map_count = di;
+    return true;
+}
+
+private PageTableEntry * new_page_table()
+{
+    PageTableEntry * pt = cast(PageTableEntry *)scratch_alloc(1u);
+    memset64(pt, 0u, 512);
+    return pt;
+}
+
+private void map(ulong source_page, ulong dest_page, PageTableEntry * pt_base)
+{
+    PageTableEntry * pt = pt_base;
+    PageTableEntry * next_pt;
+    for (size_t level = 0; level < 4u; level++)
+    {
+        size_t pt_index = PageTableEntry.page_table_index(source_page, level);
+        if (pt[pt_index].present())
+        {
+            pt = pt[pt_index].next();
+        }
+        else
+        {
+            ulong addr;
+            if (level < 3u)
+            {
+                next_pt = new_page_table();
+                addr = cast(ulong)next_pt;
+            }
+            else
+            {
+                addr = dest_page;
+            }
+            pt[pt_index] = PageTableEntry(addr,
+                    0u, 0u, 0u, 0u, 0u, 0u, 1u, 1u);
+            pt = next_pt;
+        }
+    }
+}
+
+private void build_page_tables()
+{
+    PageTableEntry * pt_base = new_page_table();
+    for (size_t i = 0u; i < bootinfo.memory_map_count; i++)
+    {
+        size_t n_pages = bootinfo.memory_map[i].size / 4096u;
+        for (size_t p = 0u; p < n_pages; p++)
+        {
+            ulong page_addr = bootinfo.memory_map[i].base + 4096u * p;
+            /* Identity map all pages. */
+            map(page_addr, page_addr, pt_base);
+        }
+    }
+    write_cr3(cast(ulong)pt_base);
+}
+
+extern (C) EFI_STATUS efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE * st)
+{
+    .st = st;
+
+    st.ConOut.ClearScreen(st.ConOut);
+
+    writeln("HELLO, HOS EFI Lightweight LOader, v0.1.0");
+    writeln("Firmware vendor: '%S', version: 0x%x", st.FirmwareVendor, st.FirmwareVendor);
+
+    if (!set_graphics_mode())
+    {
+        wait_key();
+        return EFI_SUCCESS;
+    }
+
+    for (;;)
+    {
+        get_memory_map();
+
+        EFI_STATUS status = st.BootServices.ExitBootServices(image_handle, memory_map_key);
+        if (status == EFI_INVALID_PARAMETER)
+        {
+            continue;
+        }
+        if (status == EFI_SUCCESS)
+        {
+            break;
+        }
+        writeln("ExitBootServices: Error %x", status);
+        wait_key();
+        return EFI_SUCCESS;
+    }
+
+    build_page_tables();
+
+    return EFI_SUCCESS;
+}
@@ -0,0 +1,122 @@
+import uefi;
+import hello;
+import core.stdc.stdarg;
+
+private size_t format_hex(CHAR16 * s, ulong v, bool ptr)
+{
+    string hex_chars = "0123456789ABCDEF";
+    bool print = ptr;
+    size_t si = 0u;
+    for (size_t i = 0u; i < 16u; i++)
+    {
+        if (ptr && (i == 8u))
+        {
+            s[si++] = '_';
+        }
+        ulong n = (v >> (60u - 4u * i)) & 0xFu;
+        if (n != 0u)
+        {
+            print = true;
+        }
+        if (print || (i == 15u))
+        {
+            s[si++] = hex_chars[n];
+        }
+    }
+    return si;
+}
+
+private size_t format_dec(CHAR16 * s, ulong v)
+{
+    string dec_chars = "0123456789";
+    bool print;
+    char[20] buf;
+    size_t buf_i;
+    while ((buf_i == 0u) || (v != 0u))
+    {
+        ulong n = v % 10u;
+        buf[buf_i++] = dec_chars[n];
+        v /= 10u;
+    }
+    for (size_t si = 0u; si < buf_i; si++)
+    {
+        s[si] = buf[buf_i - si - 1u];
+    }
+    return buf_i;
+}
+
+void write(string s, va_list args)
+{
+    __gshared static CHAR16[256] s16;
+    size_t i = 0u;
+    bool escape = false;
+    foreach (char c; s)
+    {
+        if (escape)
+        {
+            if (c == '%')
+            {
+                s16[i++] = '%';
+            }
+            else if (c == 'x')
+            {
+                ulong v;
+                va_arg(args, v);
+                i += format_hex(&s16[i], v, false);
+            }
+            else if (c == 'p')
+            {
+                ulong v;
+                va_arg(args, v);
+                i += format_hex(&s16[i], v, true);
+            }
+            else if (c == 'S')
+            {
+                const(CHAR16) * s2;
+                va_arg(args, s2);
+                for (size_t s2_i = 0u; s2[s2_i] != 0; s2_i++)
+                {
+                    s16[i++] = s2[s2_i];
+                }
+            }
+            else if (c == 'u')
+            {
+                ulong v;
+                va_arg(args, v);
+                i += format_dec(&s16[i], v);
+            }
+            else
+            {
+                s16[i++] = c;
+            }
+            escape = false;
+        }
+        else if (c == '%')
+        {
+            escape = true;
+        }
+        else
+        {
+            s16[i++] = c;
+        }
+    }
+    s16[i++] = 0u;
+    st.ConOut.OutputString(st.ConOut, &s16[0]);
+}
+
+extern (C) void write(string s, ...)
+{
+    va_list args;
+    va_start(args, s);
+    write(s, args);
+    va_end(args);
+}
+
+extern (C) void writeln(string s, ...)
+{
+    va_list args;
+    va_start(args, s);
+    write(s, args);
+    write("\r\n", args);
+    va_end(args);
+}
@@ -0,0 +1,19 @@
+__gshared ubyte[512 * 1024] scratch;
+__gshared size_t scratch_used;
+
+size_t scratch_free()
+{
+    return scratch.sizeof - scratch_used;
+}
+
+ubyte * scratch_current()
+{
+    return &scratch[scratch_used];
+}
+
+ubyte * scratch_alloc(size_t n = 1)
+{
+    ubyte * address = &scratch[scratch_used];
+    scratch_used += 4096u * n;
+    return address;
+}
@@ -0,0 +1,16 @@
+import hulk.bootinfo;
+import hos.memory;
+import ldc.attributes;
+
+@(ldc.attributes.section(".hulk_start"))
+extern(C) void hulk_start(BootInfo * bootinfo)
+{
+    for (size_t y = 100u; y < 120u; y++)
+    {
+        memset32(&bootinfo.fb.buffer[y * bootinfo.fb.stride + 20u], 0xFF8800u, 20u);
+    }
+
+    for (;;)
+    {
+    }
+}
@@ -0,0 +1,33 @@
+ENTRY(hulk_start)
+
+SECTIONS
+{
+    . = 0x0000800000000000;
+    _hulk_mem_start = .;
+
+    .text BLOCK(4K) : ALIGN(4K)
+    {
+        *(.hulk_start)
+        *(.text)
+    }
+
+    .rodata BLOCK(4K) : ALIGN(4K)
+    {
+        *(.rodata)
+    }
+
+    .data BLOCK(4K) : ALIGN(4K)
+    {
+        *(.data)
+    }
+
+    .bss BLOCK(4K) : ALIGN(4K)
+    {
+        *(COMMON)
+        *(.bss)
+    }
+
+    . = ALIGN(4K);
+
+    _hulk_mem_end = .;
+}
@@ -0,0 +1,22 @@
+struct BootInfo
+{
+    struct MemoryRegion
+    {
+        ulong base;
+        size_t size;
+    }
+    struct Framebuffer
+    {
+        uint * buffer;
+        uint width;
+        uint height;
+        uint stride;
+        uint format;
+    }
+
+    Framebuffer fb;
+    MemoryRegion[500] memory_map;
+    size_t memory_map_count;
+}
+
+enum ulong HULK_VIRTUAL_START = 0x0000_8000_0000_0000u;
@@ -1,9 +1,10 @@
+project_name "x86_64-elf-gcc"
 binutils_version = "2.35"
 binutils_checksum = "1b11659fb49e20e18db460d44485f09442c8c56d5df165de9461eb09c8302f85"
 gcc_version = "10.2.0"
 gcc_checksum = "b8dd4368bb9c7f0b98188317ee0254dd8cc99d1e3a18d0ff146c855fe16c1d8c"
-install_path = File.expand_path("i686-elf-gcc")
-target = "i686-elf"
+install_path = File.expand_path("x86_64-elf-gcc")
+target = "x86_64-elf"
 path_prepend "#{install_path}/bin"

 configure do
@@ -53,7 +54,7 @@ default do
    cd "#{build_dir}/build-gcc" do
      sh %W[../gcc-#{gcc_version}/configure
        --target=#{target} --prefix=#{install_path} --disable-nls
-        --enable-languages=c,c++ --without-headers]
+        --enable-languages=c --without-headers]
      sh "make all-gcc"
      sh "make all-target-libgcc"
      sh "make install-gcc"
Author	SHA1	Message	Date
josh	cd6983e2cd	Generate HULK binary	2022-03-18 22:01:27 -04:00
josh	8df1646c61	Add initial HULK source and linker script	2022-03-18 21:55:38 -04:00
josh	3e25ab6ae4	HELLO: Zero out page tables after allocating, before using	2022-03-18 21:21:00 -04:00
josh	05cc2da2e3	HULK: Add virtual start address	2022-03-18 21:19:06 -04:00
josh	a54536660b	HELLO: Create page tables to identity map available RAM prior to jumping to kernel	2022-03-18 21:15:58 -04:00
josh	9e3d9b18ea	Add write_cr3()	2022-03-18 16:40:46 -04:00
josh	ef01239468	HELLO: Add scratch module	2022-03-18 16:03:50 -04:00
josh	372b7265f1	Add src/common/hos/cpu.d	2022-03-18 10:51:35 -04:00
josh	1bc8722098	Add hos.memory module in src/common	2022-03-18 00:07:10 -04:00
josh	cd2f3f9a84	Rename kernel to hulk	2022-03-17 16:57:18 -04:00
josh	08a35e40d4	Rename HEL -> HELLO	2022-03-16 16:11:26 -04:00
josh	a855702214	Fix checking for EFI_INVALID_PARAMETER	2022-03-16 14:37:46 -04:00
josh	706f2c1c5d	HEL: Call ExitBootServices	2022-03-16 01:12:07 -04:00
josh	704fd15f7b	Get memory map; remove heap	2022-03-15 23:58:37 -04:00
josh	f054bab5cc	Set bootinfo framebuffer fields	2022-03-15 23:03:28 -04:00
josh	3fa8e4a24b	Set maximum resolution for running in qemu	2022-03-15 22:52:56 -04:00
josh	a38f95a7b8	Set graphics mode	2022-03-14 22:26:55 -04:00
josh	dd57a31d38	HEL: Add heap module; locate GOP handle	2022-03-14 21:43:40 -04:00
josh	406f17c1db	HEL: format hex, decimal, and CHAR16 strings in output module	2022-03-14 15:09:02 -04:00
josh	0be1b113aa	Add output module for console output routines	2022-03-14 13:53:02 -04:00
josh	d782b59768	Write map file	2022-03-14 01:35:28 -04:00
josh	c3a6139f83	Run image from temporary copy to avoid modified disk image file	2022-03-14 00:57:24 -04:00
josh	3d3a433800	Update to rscons 3.0.2	2022-03-14 00:51:54 -04:00
josh	54451bcf5b	Add initial HOS EFI Loader sources	2022-03-13 23:16:37 -04:00
josh	1fc2dd34e5	Update build system for 64-bit, EFI, and D	2022-03-13 22:46:59 -04:00