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Changes in / [fc14438:49ace23] in mainline

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rfc14438	r49ace23
113	113	jump_to_kernel:
114	114	alloc loc0 = ar.pfs, 1, 1, 0, 0
115		mov r2 = in0 ;; # Pass bootinfo address
	115	mov r1 = in0 ;; # Pass bootinfo address
116	116	movl r8 = KERNEL_ADDRESS;;
117	117	mov b1 = r8 ;;

-              rfc14438
+              r49ace23
 stack0:
+#
-# Kernel entry point.
+#
-# This is where we are passed control from the boot code.
-# Register contents:
+#
-#       r2      Address of the boot code's bootinfo structure.
+#
 kernel_image_start:
         .auto
 …
         loadrs
+        #
+        # Initialize memory stack to some sane value and allocate a scratch are
+        # on it.
+        #
+        movl sp = stack0 ;;
+        add sp = -16, sp
+        # Initialize memory stack to some sane value
+        movl r12 = stack0 ;;
+        add r12 = -16, r12  /* allocate a scratch area on the stack */
         # Initialize gp (Global Pointer) register
+        movl gp = kernel_image_start
+        movl r20 = (VRN_KERNEL << VRN_SHIFT) ;;
+        or r20 = r20, r1 ;;
+        movl r1 = kernel_image_start
+        #
+        # Initialize bootinfo on BSP.
+        #
+        movl r20 = (VRN_KERNEL << VRN_SHIFT) ;;
+        or r20 = r20, r2 ;;
+        /*
+         * Initialize bootinfo on BSP.
+         */
         addl r21 = @gprel(bootinfo), gp ;;
         st8 [r21] = r20

rfc14438	r49ace23
39	39	__entry:
40	40	alloc loc0 = ar.pfs, 0, 1, 2, 0
41		movl gp = _gp
	41	movl r1 = _gp
42	42
43	43	# Pass PCB pointer as the first argument to __main

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