[ARM] Fixes for 2.5.46

- Add LDFLAGS_BLOB definitions
- Tweak kernel_thread for better code
- Fix vmlinux-armv.lds.in to prevent ld complaining about the
  architecture private flags.
(I'm not certain that the last item isn't a hole in some bug fix in
ld - this fix appears to work with every binutils I've found thus
far.  However, if this suspected bug gets fixed, we're going to have
to rethink how we combine binary objects into ELF objects.)

arch/arm/Makefile

@@ -8,6 +8,7 @@
 # Copyright (C) 1995-2001 by Russell King
 
 LDFLAGS_vmlinux	:=-p -X
+LDFLAGS_BLOB	:=--format binary
 AFLAGS_vmlinux.lds.o = -DTEXTADDR=$(TEXTADDR) -DDATAADDR=$(DATAADDR)
 OBJCOPYFLAGS	:=-O binary -R .note -R .comment -S
 GZFLAGS		:=-9
@@ -60,6 +61,7 @@ AFLAGS		+=$(apcs-y) $(arch-y) -mno-fpu -msoft-float -Wa,-mno-fpu
 ifeq ($(CONFIG_CPU_26),y)
 PROCESSOR	:= armo
 HEAD		:= arch/arm/mach-arc/head.o arch/arm/kernel/init_task.o
+LDFLAGS_BLOB	+= --oformat elf26-littlearm
   ifeq ($(CONFIG_ROM_KERNEL),y)
     DATAADDR	 = 0x02080000
     TEXTADDR	 = 0x03800000
@@ -72,6 +74,7 @@ ifeq ($(CONFIG_CPU_32),y)
 PROCESSOR	 = armv
 HEAD		:= arch/arm/kernel/head.o arch/arm/kernel/init_task.o
 TEXTADDR	 = 0xC0008000
+LDFLAGS_BLOB	+= --oformat elf32-littlearm
 endif
 
 ifeq ($(CONFIG_ARCH_ARCA5K),y)

arch/arm/kernel/process.c

@@ -391,12 +391,12 @@ void dump_thread(struct pt_regs * regs, struct user * dump)
  */
 pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
 {
-	pid_t __ret;
+	register unsigned int r0 asm("r0") = flags | CLONE_VM | CLONE_UNTRACED;
+	register unsigned int r1 asm("r1") = 0;
+	register pid_t __ret asm("r0");
 
 	__asm__ __volatile__(
-	"orr	r0, %1, %2	@ kernel_thread sys_clone	\n\
-	mov	r1, #0						\n\
-	"__syscall(clone)"					\n\
+	__syscall(clone)"	@ kernel_thread sys_clone	\n\
 	movs	%0, r0		@ if we are the child		\n\
 	bne	1f						\n\
 	mov	fp, #0		@ ensure that fp is zero	\n\
@@ -406,8 +406,8 @@ pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
 	b	sys_exit					\n\
 1:	"
         : "=r" (__ret)
-        : "Ir" (flags), "r" (CLONE_VM | CLONE_UNTRACED), "r" (fn), "r" (arg)
-	: "r0", "r1", "lr");
+        : "0" (r0), "r" (r1), "r" (fn), "r" (arg)
+	: "lr");
 	return __ret;
 }
 

arch/arm/vmlinux-armv.lds.in

@@ -37,7 +37,7 @@ SECTIONS
 		__initcall_end = .;
 		. = ALIGN(32);
 		__initramfs_start = .;
-			*(.init.initramfs)
+			usr/built-in.o(.init.ramfs)
 		__initramfs_end = .;
 		. = ALIGN(4096);
 		__init_end = .;