powerpc: Fix various compile errors with ARCH=ppc, ppc64 and powerpc

This makes ppc use the syscalls.c from arch/powerpc/kernel, exports
copy_and_flush from head_32.S for use by prom_init.c (ARCH=powerpc),
and consolidates the sys_fadvise64_64 implementations for 32-bit.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Makefile

@@ -121,7 +121,6 @@ head-$(CONFIG_4xx)		:= arch/powerpc/kernel/head_4xx.o
 head-$(CONFIG_44x)		:= arch/powerpc/kernel/head_44x.o
 head-$(CONFIG_FSL_BOOKE)	:= arch/powerpc/kernel/head_fsl_booke.o
 
-head-$(CONFIG_6xx)		+= arch/powerpc/kernel/idle_6xx.o
 head-$(CONFIG_PPC64)		+= arch/powerpc/kernel/entry_64.o
 head-$(CONFIG_PPC_FPU)		+= arch/powerpc/kernel/fpu.o
 

arch/powerpc/kernel/Makefile

@@ -10,7 +10,8 @@ CFLAGS_prom_init.o      += -fPIC
 CFLAGS_btext.o		+= -fPIC
 endif
 
-obj-y				:= semaphore.o cputable.o ptrace.o signal_32.o
+obj-y				:= semaphore.o cputable.o ptrace.o syscalls.o \
+				   signal_32.o
 obj-$(CONFIG_PPC64)		+= binfmt_elf32.o sys_ppc32.o
 obj-$(CONFIG_ALTIVEC)		+= vecemu.o vector.o
 obj-$(CONFIG_POWER4)		+= idle_power4.o
@@ -24,14 +25,13 @@ extra-$(CONFIG_40x)		:= head_4xx.o
 extra-$(CONFIG_44x)		:= head_44x.o
 extra-$(CONFIG_FSL_BOOKE)	:= head_fsl_booke.o
 extra-$(CONFIG_8xx)		:= head_8xx.o
-extra-$(CONFIG_6xx)		+= idle_6xx.o
 extra-$(CONFIG_PPC64)		+= entry_64.o
 extra-$(CONFIG_PPC_FPU)		+= fpu.o
 extra-y				+= vmlinux.lds
 
 obj-y				+= process.o init_task.o \
-				   prom.o systbl.o traps.o syscalls.o
-obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o
+				   prom.o systbl.o traps.o
+obj-$(CONFIG_PPC32)		+= entry_32.o idle_6xx.o setup_32.o misc_32.o
 obj-$(CONFIG_PPC64)		+= setup_64.o misc_64.o
 obj-$(CONFIG_PPC_OF)		+= prom_init.o
 obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
@@ -44,7 +44,7 @@ endif
 
 else
 # stuff used from here for ARCH=ppc or ARCH=ppc64
-obj-$(CONFIG_PPC64)		+= traps.o process.o init_task.o syscalls.o
+obj-$(CONFIG_PPC64)		+= traps.o process.o init_task.o
 
 fpux-$(CONFIG_PPC32)		+= fpu.o
 extra-$(CONFIG_PPC_FPU)		+= $(fpux-y)

arch/powerpc/kernel/head_32.S

@@ -831,7 +831,7 @@ relocate_kernel:
  * r3 = dest addr, r4 = source addr, r5 = copy limit, r6 = start offset
  * on exit, r3, r4, r5 are unchanged, r6 is updated to be >= r5.
  */
-copy_and_flush:
+_GLOBAL(copy_and_flush)
 	addi	r5,r5,-4
 	addi	r6,r6,-4
 4:	li	r0,L1_CACHE_BYTES/4

arch/powerpc/kernel/sys_ppc32.c

@@ -1069,13 +1069,6 @@ long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
 			     advice);
 }
 
-long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
-			u32 len_high, u32 len_low)
-{
-	return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low,
-			     (u64)len_high << 32 | len_low, advice);
-}
-
 long ppc32_timer_create(clockid_t clock,
 			struct compat_sigevent __user *ev32,
 			timer_t __user *timer_id)

arch/powerpc/kernel/syscalls.c

@@ -336,6 +336,13 @@ time_t sys64_time(time_t __user * tloc)
 }
 #endif
 
+long ppc_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
+		      u32 len_high, u32 len_low)
+{
+	return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low,
+			     (u64)len_high << 32 | len_low, advice);
+}
+
 void do_show_syscall(unsigned long r3, unsigned long r4, unsigned long r5,
 		     unsigned long r6, unsigned long r7, unsigned long r8,
 		     struct pt_regs *regs)

arch/powerpc/kernel/systbl.S

@@ -297,7 +297,7 @@ SYSCALL32(tgkill)
 SYSCALL32(utimes)
 COMPAT_SYS(statfs64)
 COMPAT_SYS(fstatfs64)
-SYSX(sys_ni_syscall, ppc32_fadvise64_64, sys_fadvise64_64)
+SYSX(sys_ni_syscall, ppc_fadvise64_64, ppc_fadvise64_64)
 PPC_SYS(rtas)
 OLDSYS(debug_setcontext)
 SYSCALL(ni_syscall)

arch/ppc/kernel/Makefile

@@ -14,7 +14,7 @@ extra-y				+= vmlinux.lds
 
 obj-y				:= entry.o traps.o irq.o idle.o time.o misc.o \
 					process.o align.o \
-					syscalls.o setup.o \
+					setup.o \
 					ppc_htab.o perfmon.o
 obj-$(CONFIG_6xx)		+= l2cr.o cpu_setup_6xx.o
 obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o

arch/ppc64/kernel/misc.S

@@ -1175,7 +1175,7 @@ _GLOBAL(sys_call_table32)
 	.llong .sys32_utimes
 	.llong .compat_sys_statfs64
 	.llong .compat_sys_fstatfs64
-	.llong .ppc32_fadvise64_64	/* 32bit only fadvise64_64 */
+	.llong .ppc_fadvise64_64	/* 32bit only fadvise64_64 */
 	.llong .ppc_rtas		/* 255 */
 	.llong .sys_ni_syscall		/* 256 reserved for sys_debug_setcontext */
 	.llong .sys_ni_syscall		/* 257 reserved for vserver */