Merged several files together

src/x86/entry.S

@@ -1,5 +1,98 @@
 .section .multiboot
-.include "x86/multiboot2header.S"
+
+/*
+ * Define constants for the multiboot header. See Multiboot 2 Specifications for details.
+ */
+.set align, 1<<0
+.set meminfo, 1<<1
+.set magic, 0xE85250D6
+.set arch, 0
+.set headerLength, _multibootHeaderEnd - _multibootHeaderStart
+.set checksum, -(magic + arch + headerLength)
+
+.set tagNotOptional, 0
+
+.set tagInfoRequestType, 1
+.set tagInfoRequestSize, _multibootInfoTagEnd - _multibootInfoTagStart
+.set requestBootCommand, 1
+.set requestBootLoaderName, 2
+.set requestBootModules, 3
+.set requestMemoryInfo, 4
+.set requestBootDevice, 5
+.set requestMemoryMap, 6
+
+.set tagAddressType, 2
+.set tagAddressSize, 24
+.set tagAddressHeaderLocation, LOAD_START
+.set tagAddressLoadStart, LOAD_START
+.set tagAddressLoadEnd, LOAD_END
+.set tagAddressBSSEnd, BSS_END
+
+.set tagEntryType, 3
+.set tagEntrySize, 12
+.set tagEntryAddress, _start - (0xFF900000 - 0x100000)
+
+.set tagModuleAlignType, 6
+.set tagModuleAlignSize, 8
+
+/*
+ * Each multiboot tag must be 8-byte aligned, or GRUB will not be able to read the header.
+ */
+.align 8
+_multibootHeaderStart:
+
+.long magic
+.long arch
+.long headerLength
+.long checksum
+
+.align 8
+
+_multibootInfoTagStart:
+.short tagInfoRequestType
+.short tagNotOptional
+.long tagInfoRequestSize
+.long requestBootCommand
+.long requestBootLoaderName
+.long requestBootModules
+.long requestMemoryInfo
+.long requestBootDevice
+.long requestMemoryMap
+_multibootInfoTagEnd:
+
+.align 8
+
+.short tagAddressType
+.short tagNotOptional
+.long tagAddressSize
+.long tagAddressHeaderLocation
+.long tagAddressLoadStart
+.long tagAddressLoadEnd
+.long tagAddressBSSEnd
+
+.align 8
+
+.short tagEntryType
+.short tagNotOptional
+.long tagEntrySize
+.long tagEntryAddress
+
+.align 8
+
+.short tagModuleAlignType
+.short tagNotOptional
+.long tagModuleAlignSize
+
+.align 8
+
+/*
+ * Terminate list of multiboot header tags.
+ * Ending tag has type = 0, flags = 0, size = 8
+ */
+.long 0
+.long 8
+
+_multibootHeaderEnd:
 
 .section .rodata