Pass multiboot magic and header to kmain

src/kernel/arch/x86/arch.zig

@@ -96,6 +96,13 @@ export nakedcc fn start_higher_half() noreturn {
         \\mov $KERNEL_STACK_END, %%esp
         \\mov %%esp, %%ebp
     );
+    // Push the bootloader magic number and multiboot header address with virtual offset
+    asm volatile (
+        \\.extern KERNEL_ADDR_OFFSET
+        \\push %%eax
+        \\add $KERNEL_ADDR_OFFSET, %%ebx
+        \\push %%ebx
+    );
     kmain();
     while (true) {}
 }

src/kernel/kmain.zig

@@ -6,6 +6,7 @@
 //
 const builtin = @import("builtin");
 const arch = @import("arch.zig");
+const multiboot = @import("multiboot.zig");
 
 pub fn panic(msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn {
     @setCold(true);
@@ -14,10 +15,13 @@ pub fn panic(msg: []const u8, error_return_trace: ?*builtin.StackTrace) noreturn
     while (true) {}
 }
 
-pub export fn kmain() void {
+pub export fn kmain(mb_info: *multiboot.multiboot_info_t, mb_magic: u32) void {
+    if (mb_magic == multiboot.MULTIBOOT_BOOTLOADER_MAGIC) {
+        // Booted with compatible bootloader
         arch.init();
         terminal.initialize();
         terminal.write("Hello, kernel World!");
+    }
 }
 
 // Hardware text mode color constants

src/kernel/multiboot.zig

@@ -0,0 +1,483 @@
+// Autogenerated by zig translate-c
+pub const multiboot_uint8_t = u8;
+pub const multiboot_uint16_t = c_ushort;
+pub const multiboot_uint32_t = c_uint;
+pub const multiboot_uint64_t = c_ulonglong;
+pub const struct_multiboot_header = extern struct {
+    magic: multiboot_uint32_t,
+    flags: multiboot_uint32_t,
+    checksum: 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: multiboot_uint32_t,
+    mode_type: multiboot_uint32_t,
+    width: multiboot_uint32_t,
+    height: multiboot_uint32_t,
+    depth: multiboot_uint32_t,
+};
+pub const struct_multiboot_aout_symbol_table = extern struct {
+    tabsize: multiboot_uint32_t,
+    strsize: multiboot_uint32_t,
+    addr: multiboot_uint32_t,
+    reserved: multiboot_uint32_t,
+};
+pub const multiboot_aout_symbol_table_t = struct_multiboot_aout_symbol_table;
+pub const struct_multiboot_elf_section_header_table = extern struct {
+    num: multiboot_uint32_t,
+    size: multiboot_uint32_t,
+    addr: multiboot_uint32_t,
+    shndx: multiboot_uint32_t,
+};
+pub const multiboot_elf_section_header_table_t = struct_multiboot_elf_section_header_table;
+pub const struct_multiboot_info = extern struct {
+    flags: multiboot_uint32_t,
+    mem_lower: multiboot_uint32_t,
+    mem_upper: multiboot_uint32_t,
+    boot_device: multiboot_uint32_t,
+    cmdline: multiboot_uint32_t,
+    mods_count: multiboot_uint32_t,
+    mods_addr: multiboot_uint32_t,
+    u: extern union {
+        aout_sym: multiboot_aout_symbol_table_t,
+        elf_sec: multiboot_elf_section_header_table_t,
+    },
+    mmap_length: multiboot_uint32_t,
+    mmap_addr: multiboot_uint32_t,
+    drives_length: multiboot_uint32_t,
+    drives_addr: multiboot_uint32_t,
+    config_table: multiboot_uint32_t,
+    boot_loader_name: multiboot_uint32_t,
+    apm_table: multiboot_uint32_t,
+    vbe_control_info: multiboot_uint32_t,
+    vbe_mode_info: multiboot_uint32_t,
+    vbe_mode: multiboot_uint16_t,
+    vbe_interface_seg: multiboot_uint16_t,
+    vbe_interface_off: multiboot_uint16_t,
+    vbe_interface_len: multiboot_uint16_t,
+    framebuffer_addr: multiboot_uint64_t,
+    framebuffer_pitch: multiboot_uint32_t,
+    framebuffer_width: multiboot_uint32_t,
+    framebuffer_height: multiboot_uint32_t,
+    framebuffer_bpp: multiboot_uint8_t,
+    framebuffer_type: multiboot_uint8_t,
+    framebuffer: extern union {
+        framebuffer_palette: extern struct {
+            framebuffer_palette_addr: multiboot_uint32_t,
+            framebuffer_palette_num_colors: multiboot_uint16_t,
+        },
+        framebuffer_colours: extern struct {
+            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: multiboot_uint8_t,
+        },
+    },
+};
+pub const multiboot_info_t = struct_multiboot_info;
+pub const struct_multiboot_color = extern struct {
+    red: multiboot_uint8_t,
+    green: multiboot_uint8_t,
+    blue: multiboot_uint8_t,
+};
+pub const struct_multiboot_mmap_entry = extern struct {
+    size: multiboot_uint32_t,
+    addr: multiboot_uint64_t,
+    len: multiboot_uint64_t,
+    type: multiboot_uint32_t,
+};
+pub const multiboot_memory_map_t = struct_multiboot_mmap_entry;
+pub const struct_multiboot_mod_list = extern struct {
+    mod_start: multiboot_uint32_t,
+    mod_end: multiboot_uint32_t,
+    cmdline: multiboot_uint32_t,
+    pad: multiboot_uint32_t,
+};
+pub const multiboot_module_t = struct_multiboot_mod_list;
+pub const struct_multiboot_apm_info = extern struct {
+    version: multiboot_uint16_t,
+    cseg: multiboot_uint16_t,
+    offset: multiboot_uint32_t,
+    cseg_16: multiboot_uint16_t,
+    dseg: multiboot_uint16_t,
+    flags: multiboot_uint16_t,
+    cseg_len: multiboot_uint16_t,
+    cseg_16_len: multiboot_uint16_t,
+    dseg_len: multiboot_uint16_t,
+};
+pub const __GCC_ATOMIC_TEST_AND_SET_TRUEVAL = 1;
+pub const __FLT16_MAX_EXP__ = 15;
+pub const __BIGGEST_ALIGNMENT__ = 16;
+pub const __SIZEOF_FLOAT__ = 4;
+pub const __INT64_FMTd__ = c"ld";
+pub const __STDC_VERSION__ = c_long(201112);
+pub const __INT_LEAST32_FMTi__ = c"i";
+pub const __INT_LEAST8_FMTi__ = c"hhi";
+pub const __LDBL_EPSILON__ = -nan;
+pub const __LZCNT__ = 1;
+pub const __INT_LEAST32_FMTd__ = c"d";
+pub const __STDC_UTF_32__ = 1;
+pub const __INVPCID__ = 1;
+pub const __SIG_ATOMIC_WIDTH__ = 32;
+pub const MULTIBOOT_MEMORY_BADRAM = 5;
+pub const __UINT_FAST64_FMTX__ = c"lX";
+pub const __GCC_ATOMIC_LLONG_LOCK_FREE = 2;
+pub const __clang_version__ = c"8.0.0 (tags/RELEASE_800/rc5)";
+pub const __UINT_LEAST8_FMTo__ = c"hho";
+pub const __SIZEOF_DOUBLE__ = 8;
+pub const __INTMAX_FMTd__ = c"ld";
+pub const __CLANG_ATOMIC_CHAR_LOCK_FREE = 2;
+pub const __INT_LEAST16_FMTi__ = c"hi";
+pub const __GCC_ATOMIC_SHORT_LOCK_FREE = 2;
+pub const __FMA__ = 1;
+pub const __MMX__ = 1;
+pub const __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 = 1;
+pub const __SIZE_FMTX__ = c"lX";
+pub const __WCHAR_WIDTH__ = 32;
+pub const __FSGSBASE__ = 1;
+pub const __PTRDIFF_FMTd__ = c"ld";
+pub const __DBL_MIN_EXP__ = -1021;
+pub const __FLT_EVAL_METHOD__ = 0;
+pub const __SSE_MATH__ = 1;
+pub const __UINT_FAST8_FMTo__ = c"hho";
+pub const __UINT_LEAST64_MAX__ = c_ulong(18446744073709551615);
+pub const MULTIBOOT_INFO_BOOT_LOADER_NAME = 512;
+pub const __UINT_LEAST64_FMTx__ = c"lx";
+pub const __INT8_MAX__ = 127;
+pub const MULTIBOOT_MEMORY_AVAILABLE = 1;
+pub const __DBL_HAS_DENORM__ = 1;
+pub const __FLOAT128__ = 1;
+pub const __FLT16_HAS_QUIET_NAN__ = 1;
+pub const __ATOMIC_RELAXED = 0;
+pub const __DBL_DECIMAL_DIG__ = 17;
+pub const MULTIBOOT_SEARCH = 8192;
+pub const __SIZEOF_SHORT__ = 2;
+pub const __UINT16_FMTX__ = c"hX";
+pub const __UINT_FAST16_MAX__ = 65535;
+pub const __CLANG_ATOMIC_SHORT_LOCK_FREE = 2;
+pub const __SSSE3__ = 1;
+pub const __CONSTANT_CFSTRINGS__ = 1;
+pub const __AVX2__ = 1;
+pub const __LDBL_MAX_EXP__ = 16384;
+pub const __WINT_MAX__ = c_uint(4294967295);
+pub const __NO_MATH_INLINES = 1;
+pub const __WCHAR_TYPE__ = int;
+pub const __LONG_MAX__ = c_long(9223372036854775807);
+pub const __STDC_HOSTED__ = 1;
+pub const MULTIBOOT_FRAMEBUFFER_TYPE_EGA_TEXT = 2;
+pub const __INT_FAST16_FMTi__ = c"hi";
+pub const __PTRDIFF_WIDTH__ = 64;
+pub const __INT_LEAST32_TYPE__ = int;
+pub const __SCHAR_MAX__ = 127;
+pub const __LDBL_DENORM_MIN__ = -nan;
+pub const __FLT16_MIN_EXP__ = -14;
+pub const MULTIBOOT_INFO_AOUT_SYMS = 16;
+pub const __INT64_C_SUFFIX__ = L;
+pub const __ELF__ = 1;
+pub const __LDBL_MANT_DIG__ = 64;
+pub const MULTIBOOT_HEADER_ALIGN = 4;
+pub const MULTIBOOT_INFO_CONFIG_TABLE = 256;
+pub const __CLANG_ATOMIC_INT_LOCK_FREE = 2;
+pub const __SIZEOF_PTRDIFF_T__ = 8;
+pub const __SIG_ATOMIC_MAX__ = 2147483647;
+pub const __UINT64_FMTX__ = c"lX";
+pub const __UINT64_MAX__ = c_ulong(18446744073709551615);
+pub const __DBL_MANT_DIG__ = 53;
+pub const __FLT_DECIMAL_DIG__ = 9;
+pub const __INT_LEAST32_MAX__ = 2147483647;
+pub const __DBL_DIG__ = 15;
+pub const __ATOMIC_ACQUIRE = 2;
+pub const __OPENCL_MEMORY_SCOPE_WORK_GROUP = 1;
+pub const __FLT16_HAS_DENORM__ = 1;
+pub const __UINT_FAST16_FMTu__ = c"hu";
+pub const __INTPTR_FMTi__ = c"li";
+pub const MULTIBOOT_INFO_MODS = 8;
+pub const __UINT_FAST8_FMTX__ = c"hhX";
+pub const __LITTLE_ENDIAN__ = 1;
+pub const __SSE__ = 1;
+pub const __FLT_HAS_QUIET_NAN__ = 1;
+pub const __SIZEOF_SIZE_T__ = 8;
+pub const __UINT_LEAST16_FMTo__ = c"ho";
+pub const __UINT8_FMTo__ = c"hho";
+pub const __UINT_LEAST16_FMTx__ = c"hx";
+pub const __CLANG_ATOMIC_WCHAR_T_LOCK_FREE = 2;
+pub const __UINT_FAST16_FMTX__ = c"hX";
+pub const __VERSION__ = c"4.2.1 Compatible Clang 8.0.0 (tags/RELEASE_800/rc5)";
+pub const __UINT_FAST32_FMTx__ = c"x";
+pub const __UINTPTR_MAX__ = c_ulong(18446744073709551615);
+pub const MULTIBOOT_INFO_ALIGN = 4;
+pub const __UINT_FAST8_FMTu__ = c"hhu";
+pub const __UINT_LEAST8_FMTu__ = c"hhu";
+pub const __UINT_LEAST64_FMTo__ = c"lo";
+pub const __UINT_LEAST8_MAX__ = 255;
+pub const __RDRND__ = 1;
+pub const __SIZEOF_WCHAR_T__ = 4;
+pub const __MOVBE__ = 1;
+pub const __LDBL_MAX__ = -nan;
+pub const __UINT16_MAX__ = 65535;
+pub const _LP64 = 1;
+pub const __x86_64 = 1;
+pub const __code_model_small_ = 1;
+pub const linux = 1;
+pub const __SIZEOF_WINT_T__ = 4;
+pub const MULTIBOOT_INFO_CMDLINE = 4;
+pub const __UINTMAX_FMTo__ = c"lo";
+pub const __FLT_DIG__ = 6;
+pub const __UINT_LEAST8_FMTX__ = c"hhX";
+pub const __INT16_MAX__ = 32767;
+pub const __WINT_UNSIGNED__ = 1;
+pub const __FLT_MAX_10_EXP__ = 38;
+pub const __UINTPTR_FMTX__ = c"lX";
+pub const __UINT_LEAST16_FMTu__ = c"hu";
+pub const __CLANG_ATOMIC_POINTER_LOCK_FREE = 2;
+pub const __WINT_WIDTH__ = 32;
+pub const __F16C__ = 1;
+pub const __SHRT_MAX__ = 32767;
+pub const __GCC_ATOMIC_BOOL_LOCK_FREE = 2;
+pub const __POINTER_WIDTH__ = 64;
+pub const __PTRDIFF_MAX__ = c_long(9223372036854775807);
+pub const __tune_corei7__ = 1;
+pub const __FLT16_DIG__ = 3;
+pub const __INT32_FMTd__ = c"d";
+pub const __DBL_MIN__ = -nan;
+pub const __SIZEOF_LONG__ = 8;
+pub const __INTPTR_WIDTH__ = 64;
+pub const MULTIBOOT_INFO_VBE_INFO = 2048;
+pub const __FLT16_MAX_10_EXP__ = 4;
+pub const __INT_FAST32_TYPE__ = int;
+pub const __NO_INLINE__ = 1;
+pub const __UINT_FAST32_FMTX__ = c"X";
+pub const MULTIBOOT_AOUT_KLUDGE = 65536;
+pub const __gnu_linux__ = 1;
+pub const __INT_FAST32_MAX__ = 2147483647;
+pub const __corei7__ = 1;
+pub const __UINTMAX_FMTu__ = c"lu";
+pub const MULTIBOOT_FRAMEBUFFER_TYPE_INDEXED = 0;
+pub const __BMI__ = 1;
+pub const MULTIBOOT_INFO_BOOTDEV = 2;
+pub const __FLT_RADIX__ = 2;
+pub const MULTIBOOT_INFO_MEMORY = 1;
+pub const __FLT16_HAS_INFINITY__ = 1;
+pub const __GCC_HAVE_SYNC_COMPARE_AND_SWAP_1 = 1;
+pub const MULTIBOOT_FRAMEBUFFER_TYPE_RGB = 1;
+pub const __GCC_ATOMIC_INT_LOCK_FREE = 2;
+pub const __OPENCL_MEMORY_SCOPE_ALL_SVM_DEVICES = 3;
+pub const __FLT16_DECIMAL_DIG__ = 5;
+pub const __PRAGMA_REDEFINE_EXTNAME = 1;
+pub const __INT_FAST8_FMTd__ = c"hhd";
+pub const __INT32_TYPE__ = int;
+pub const MULTIBOOT_BOOTLOADER_MAGIC = 732803074;
+pub const __UINTMAX_WIDTH__ = 64;
+pub const __FLT_MIN__ = -nan;
+pub const __INT64_FMTi__ = c"li";
+pub const __UINT_FAST64_FMTu__ = c"lu";
+pub const __INT8_FMTd__ = c"hhd";
+pub const __INT_FAST16_TYPE__ = short;
+pub const __FLT_MAX_EXP__ = 128;
+pub const __XSAVE__ = 1;
+pub const __DBL_MAX_10_EXP__ = 308;
+pub const __LDBL_MIN__ = -nan;
+pub const __INT_FAST64_FMTi__ = c"li";
+pub const __INT_LEAST8_FMTd__ = c"hhd";
+pub const __CLANG_ATOMIC_LLONG_LOCK_FREE = 2;
+pub const __UINT_LEAST32_FMTX__ = c"X";
+pub const __UINTMAX_MAX__ = c_ulong(18446744073709551615);
+pub const __UINT_FAST16_FMTo__ = c"ho";
+pub const __LDBL_DECIMAL_DIG__ = 21;
+pub const __UINT_LEAST64_FMTX__ = c"lX";
+pub const __clang_minor__ = 0;
+pub const __SIZEOF_FLOAT128__ = 16;
+pub const __UINT_FAST64_FMTo__ = c"lo";
+pub const __SIZE_FMTx__ = c"lx";
+pub const __DBL_MAX__ = -nan;
+pub const __DBL_EPSILON__ = -nan;
+pub const __UINT64_FMTx__ = c"lx";
+pub const MULTIBOOT_HEADER = 1;
+pub const __CHAR_BIT__ = 8;
+pub const __INT16_FMTi__ = c"hi";
+pub const _DEBUG = 1;
+pub const __GNUC_MINOR__ = 2;
+pub const __UINT_FAST32_MAX__ = c_uint(4294967295);
+pub const __UINT8_FMTX__ = c"hhX";
+pub const __FLT_EPSILON__ = -nan;
+pub const __UINTPTR_WIDTH__ = 64;
+pub const __llvm__ = 1;
+pub const __UINT_FAST64_MAX__ = c_ulong(18446744073709551615);
+pub const __INT_FAST32_FMTi__ = c"i";
+pub const __FLT_HAS_INFINITY__ = 1;
+pub const __AES__ = 1;
+pub const __UINT8_FMTx__ = c"hhx";
+pub const __INTMAX_C_SUFFIX__ = L;
+pub const __ORDER_LITTLE_ENDIAN__ = 1234;
+pub const __GCC_ATOMIC_CHAR16_T_LOCK_FREE = 2;
+pub const __INT16_FMTd__ = c"hd";
+pub const __UINT32_FMTX__ = c"X";
+pub const __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 = 1;
+pub const __UINT32_C_SUFFIX__ = U;
+pub const __INT32_MAX__ = 2147483647;
+pub const __GCC_ATOMIC_CHAR_LOCK_FREE = 2;
+pub const __INTMAX_WIDTH__ = 64;
+pub const __CLANG_ATOMIC_BOOL_LOCK_FREE = 2;
+pub const __SIZE_FMTo__ = c"lo";
+pub const __DBL_HAS_QUIET_NAN__ = 1;
+pub const __INT_FAST8_FMTi__ = c"hhi";
+pub const __UINT_LEAST32_FMTo__ = c"o";
+pub const __STDC_UTF_16__ = 1;
+pub const __UINT_LEAST32_MAX__ = c_uint(4294967295);
+pub const __ATOMIC_RELEASE = 3;
+pub const __UINT_FAST16_FMTx__ = c"hx";
+pub const __UINTMAX_C_SUFFIX__ = UL;
+pub const __FLT_MIN_EXP__ = -125;
+pub const __SIZEOF_LONG_DOUBLE__ = 16;
+pub const __UINT_LEAST64_FMTu__ = c"lu";
+pub const MULTIBOOT_MOD_ALIGN = 4096;
+pub const __GCC_ATOMIC_LONG_LOCK_FREE = 2;
+pub const __ORDER_PDP_ENDIAN__ = 3412;
+pub const MULTIBOOT_PAGE_ALIGN = 1;
+pub const __INT_FAST64_FMTd__ = c"ld";
+pub const __CLANG_ATOMIC_LONG_LOCK_FREE = 2;
+pub const __GXX_ABI_VERSION = 1002;
+pub const __INT16_TYPE__ = short;
+pub const __SSE2_MATH__ = 1;
+pub const __FLT_MANT_DIG__ = 24;
+pub const __UINT_FAST64_FMTx__ = c"lx";
+pub const __STDC__ = 1;
+pub const __INT_FAST8_MAX__ = 127;
+pub const __INTPTR_FMTd__ = c"ld";
+pub const __GNUC_PATCHLEVEL__ = 1;
+pub const __UINT_LEAST8_FMTx__ = c"hhx";
+pub const __SIZE_WIDTH__ = 64;
+pub const __INT_LEAST64_FMTi__ = c"li";
+pub const __SSE4_2__ = 1;
+pub const __AVX__ = 1;
+pub const __INT_FAST16_MAX__ = 32767;
+pub const __INTPTR_MAX__ = c_long(9223372036854775807);
+pub const __CLANG_ATOMIC_CHAR16_T_LOCK_FREE = 2;
+pub const __UINT64_FMTu__ = c"lu";
+pub const __BYTE_ORDER__ = __ORDER_LITTLE_ENDIAN__;
+pub const __SSE2__ = 1;
+pub const MULTIBOOT_INFO_FRAMEBUFFER_INFO = 4096;
+pub const __INT_MAX__ = 2147483647;
+pub const __INTMAX_FMTi__ = c"li";
+pub const __DBL_DENORM_MIN__ = -nan;
+pub const MULTIBOOT_INFO_APM_TABLE = 1024;
+pub const __clang_major__ = 8;
+pub const __FLT16_MANT_DIG__ = 11;
+pub const __GNUC__ = 4;
+pub const __UINT32_MAX__ = c_uint(4294967295);
+pub const MULTIBOOT_MEMORY_RESERVED = 2;
+pub const __FLT_DENORM_MIN__ = -nan;
+pub const __DBL_MAX_EXP__ = 1024;
+pub const __INT8_FMTi__ = c"hhi";
+pub const __UINT_LEAST16_MAX__ = 65535;
+pub const __LDBL_HAS_DENORM__ = 1;
+pub const __FLT16_MIN_10_EXP__ = -13;
+pub const __LDBL_HAS_QUIET_NAN__ = 1;
+pub const __UINT_FAST8_MAX__ = 255;
+pub const __DBL_MIN_10_EXP__ = -307;
+pub const __UINT8_FMTu__ = c"hhu";
+pub const __INT_FAST64_MAX__ = c_long(9223372036854775807);
+pub const __SSE3__ = 1;
+pub const __UINT16_FMTu__ = c"hu";
+pub const __ATOMIC_SEQ_CST = 5;
+pub const __SIZE_FMTu__ = c"lu";
+pub const __LDBL_MIN_EXP__ = -16381;
+pub const __UINT_FAST32_FMTu__ = c"u";
+pub const __clang_patchlevel__ = 0;
+pub const __SIZEOF_LONG_LONG__ = 8;
+pub const __BMI2__ = 1;
+pub const MULTIBOOT_INFO_ELF_SHDR = 32;
+pub const __GNUC_STDC_INLINE__ = 1;
+pub const __PCLMUL__ = 1;
+pub const __FXSR__ = 1;
+pub const __UINT8_MAX__ = 255;
+pub const __GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 = 1;
+pub const __UINT32_FMTx__ = c"x";
+pub const __UINT16_FMTo__ = c"ho";
+pub const __POPCNT__ = 1;
+pub const __OPENCL_MEMORY_SCOPE_DEVICE = 2;
+pub const MULTIBOOT_VIDEO_MODE = 4;
+pub const __UINT32_FMTu__ = c"u";
+pub const __SIZEOF_POINTER__ = 8;
+pub const __SIZE_MAX__ = c_ulong(18446744073709551615);
+pub const __unix = 1;
+pub const __INT_FAST16_FMTd__ = c"hd";
+pub const unix = 1;
+pub const __UINT_LEAST32_FMTu__ = c"u";
+pub const __FLT_MAX__ = -nan;
+pub const __corei7 = 1;
+pub const __GCC_ATOMIC_WCHAR_T_LOCK_FREE = 2;
+pub const __ATOMIC_CONSUME = 1;
+pub const __unix__ = 1;
+pub const __x86_64__ = 1;
+pub const __LDBL_HAS_INFINITY__ = 1;
+pub const __UINTMAX_FMTx__ = c"lx";
+pub const __UINT64_C_SUFFIX__ = UL;
+pub const __INT_LEAST16_MAX__ = 32767;
+pub const __FLT_MIN_10_EXP__ = -37;
+pub const __UINT32_FMTo__ = c"o";
+pub const __UINTPTR_FMTo__ = c"lo";
+pub const __INT_LEAST16_FMTd__ = c"hd";
+pub const __UINTPTR_FMTx__ = c"lx";
+pub const __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8 = 1;
+pub const __INT_LEAST64_FMTd__ = c"ld";
+pub const __INT_LEAST16_TYPE__ = short;
+pub const MULTIBOOT_HEADER_MAGIC = 464367618;
+pub const __ORDER_BIG_ENDIAN__ = 4321;
+pub const __LDBL_MIN_10_EXP__ = -4931;
+pub const __INT_LEAST8_MAX__ = 127;
+pub const __SIZEOF_INT__ = 4;
+pub const __GCC_ATOMIC_POINTER_LOCK_FREE = 2;
+pub const MULTIBOOT_INFO_DRIVE_INFO = 128;
+pub const MULTIBOOT_MEMORY_INFO = 2;
+pub const __amd64 = 1;
+pub const __OBJC_BOOL_IS_BOOL = 0;
+pub const __LDBL_MAX_10_EXP__ = 4932;
+pub const __SIZEOF_INT128__ = 16;
+pub const __UINT_FAST8_FMTx__ = c"hhx";
+pub const __linux = 1;
+pub const __UINT16_FMTx__ = c"hx";
+pub const __UINTPTR_FMTu__ = c"lu";
+pub const __UINT_LEAST16_FMTX__ = c"hX";
+pub const __amd64__ = 1;
+pub const __UINT_FAST32_FMTo__ = c"o";
+pub const __linux__ = 1;
+pub const __clang__ = 1;
+pub const __LP64__ = 1;
+pub const __PTRDIFF_FMTi__ = c"li";
+pub const __SSE4_1__ = 1;
+pub const __LDBL_DIG__ = 18;
+pub const __GCC_ATOMIC_CHAR32_T_LOCK_FREE = 2;
+pub const __XSAVEOPT__ = 1;
+pub const __UINT64_FMTo__ = c"lo";
+pub const __INT_FAST32_FMTd__ = c"d";
+pub const __ATOMIC_ACQ_REL = 4;
+pub const MULTIBOOT_MEMORY_ACPI_RECLAIMABLE = 3;
+pub const __LONG_LONG_MAX__ = c_longlong(9223372036854775807);
+pub const __OPENCL_MEMORY_SCOPE_SUB_GROUP = 4;
+pub const MULTIBOOT_MEMORY_NVS = 4;
+pub const MULTIBOOT_INFO_MEM_MAP = 64;
+pub const __INTMAX_MAX__ = c_long(9223372036854775807);
+pub const __UINT_LEAST32_FMTx__ = c"x";
+pub const __WCHAR_MAX__ = 2147483647;
+pub const __INT64_MAX__ = c_long(9223372036854775807);
+pub const __CLANG_ATOMIC_CHAR32_T_LOCK_FREE = 2;
+pub const __INT_LEAST64_MAX__ = c_long(9223372036854775807);
+pub const __UINTMAX_FMTX__ = c"lX";
+pub const __OPENCL_MEMORY_SCOPE_WORK_ITEM = 0;
+pub const __FLT_HAS_DENORM__ = 1;
+pub const __DECIMAL_DIG__ = __LDBL_DECIMAL_DIG__;
+pub const __INT32_FMTi__ = c"i";
+pub const __DBL_HAS_INFINITY__ = 1;
+pub const __FINITE_MATH_ONLY__ = 0;
+pub const multiboot_header = struct_multiboot_header;
+pub const multiboot_aout_symbol_table = struct_multiboot_aout_symbol_table;
+pub const multiboot_elf_section_header_table = struct_multiboot_elf_section_header_table;
+pub const multiboot_info = struct_multiboot_info;
+pub const multiboot_color = struct_multiboot_color;
+pub const multiboot_mmap_entry = struct_multiboot_mmap_entry;
+pub const multiboot_mod_list = struct_multiboot_mod_list;
+pub const multiboot_apm_info = struct_multiboot_apm_info;