BootShim: Publish code for LinuxLoader and XBL Reload [skip ci]

BootShim/BootShim.Zeta.LinuxLoader.S

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+_Head:
+	/* Set _Entry address */
+	adr		x1, _Payload
+
+	/* Jump to the real code */
+	b		_Start
+
+	/* Fake Linux kernel header */
+
+	/* Text Offset */
+	.quad 0x9F000000
+
+_StackSize:
+	/* Image Size */
+	.quad 0x01DF5200
+
+	/* Flags */
+	.quad 0
+
+	/* Reserved */
+	.quad 0
+
+	/* Reserved */
+	.quad 0
+
+	/* Reserved */
+	.quad 0
+
+	/* ARM64 Magic */
+	.ascii "ARM\x64"
+
+	/* Reserved */
+	.long 0
+
+_Start:
+	/* Location of the device tree for said kernel image */
+	ldr		x0, _StackSize
+	add     x0, x0, x1
+
+	/* Reserved */
+	mov     x1, #0
+
+.text
+.align 4
+
+_Payload:
+	/* Your code will get ran right after this binary */

BootShim/BootShim.Zeta.XBLReload.S

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+_Head:
+	/* Set _Entry address */
+	adr		x1, #0xA0
+
+	/* Jump to the real code */
+	b		_Start
+
+	/* Fake Linux kernel header */
+
+_StackBase:
+	/* Text Offset */
+	.quad 0x9FC00000
+
+_StackSize:
+	/* Image Size */
+	.quad 0x00300000
+
+_Test1:
+	/* Flags */
+	.quad 0x9B800000
+
+_Test2:
+	/* Reserved */
+	.quad 0x03C00000
+
+	/* Reserved */
+	.quad 0
+
+	/* Reserved */
+	.quad 0
+
+	/* ARM64 Magic */
+	.ascii "ARM\x64"
+
+	/* Reserved */
+	.long 0
+
+_Start:
+	mov		x4, x1
+	ldr		x5, _StackBase
+	cmp		x4, x5
+	beq		_Entry
+	ldr		x6,  _StackSize
+
+_CopyLoop:
+	ldp		x2, x3, [x4], #16
+	stp		x2, x3, [x5], #16
+	subs	x6, x6, #16
+	b.ne	_CopyLoop
+
+	nop
+	ldr     x8, _Test1
+	ldr     x9, _Test2
+_Cleanup:
+	mov     x2, #0
+	mov     x3, #0
+	stp		xzr, xzr, [x8], #16
+	subs	x9, x9, #16
+	b.ne	_Cleanup
+	nop
+	nop
+	nop
+	nop
+
+	ldr		x5, _StackBase
+
+_Entry:
+	br		x5
+
+dead:
+	/* We should never get here */
+	b		dead
+
+	/* Your code will get ran right after this binary */