[PATCH 3/4] powerpc/64: make buildable without CONFIG_COMPAT

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There are numerous references to 32bit functions in generic and 64bit
code so ifdef them out.

Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx>
---
 arch/powerpc/include/asm/syscall.h |  2 ++
 arch/powerpc/kernel/Makefile       | 15 ++++++++++++---
 arch/powerpc/kernel/entry_64.S     |  2 ++
 arch/powerpc/kernel/signal.c       |  5 +++--
 arch/powerpc/kernel/syscall_64.c   |  5 +++--
 arch/powerpc/kernel/vdso.c         |  4 +++-
 arch/powerpc/perf/callchain.c      | 14 ++++++++++----
 7 files changed, 35 insertions(+), 12 deletions(-)

diff --git a/arch/powerpc/include/asm/syscall.h b/arch/powerpc/include/asm/syscall.h
index 38d62acfdce7..3ed3b75541a1 100644
--- a/arch/powerpc/include/asm/syscall.h
+++ b/arch/powerpc/include/asm/syscall.h
@@ -16,7 +16,9 @@
 
 /* ftrace syscalls requires exporting the sys_call_table */
 extern const unsigned long sys_call_table[];
+#ifdef CONFIG_COMPAT
 extern const unsigned long compat_sys_call_table[];
+#endif
 
 static inline int syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
 {
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 1d646a94d96c..b0db365b83d8 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -44,16 +44,25 @@ CFLAGS_btext.o += -DDISABLE_BRANCH_PROFILING
 endif
 
 obj-y				:= cputable.o ptrace.o syscalls.o \
-				   irq.o align.o signal_32.o pmc.o vdso.o \
+				   irq.o align.o pmc.o vdso.o \
 				   process.o systbl.o idle.o \
 				   signal.o sysfs.o cacheinfo.o time.o \
 				   prom.o traps.o setup-common.o \
 				   udbg.o misc.o io.o misc_$(BITS).o \
 				   of_platform.o prom_parse.o
-obj-$(CONFIG_PPC64)		+= setup_64.o sys_ppc32.o \
-				   signal_64.o ptrace32.o \
+ifndef CONFIG_PPC64
+obj-y				+= signal_32.o
+else
+ifdef CONFIG_COMPAT
+obj-y				+= signal_32.o
+endif
+endif
+obj-$(CONFIG_PPC64)		+= setup_64.o signal_64.o \
 				   paca.o nvram_64.o firmware.o \
 				   syscall_64.o
+ifdef CONFIG_COMPAT
+obj-$(CONFIG_PPC64)		+= sys_ppc32.o ptrace32.o
+endif
 obj-$(CONFIG_VDSO32)		+= vdso32/
 obj-$(CONFIG_PPC_WATCHDOG)	+= watchdog.o
 obj-$(CONFIG_HAVE_HW_BREAKPOINT)	+= hw_breakpoint.o
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 2ec825a85f5b..a2dbf216f607 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -51,8 +51,10 @@
 SYS_CALL_TABLE:
 	.tc sys_call_table[TC],sys_call_table
 
+#ifdef CONFIG_COMPAT
 COMPAT_SYS_CALL_TABLE:
 	.tc compat_sys_call_table[TC],compat_sys_call_table
+#endif
 
 /* This value is used to mark exception frames on the stack. */
 exception_marker:
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c
index 60436432399f..71f4f1794f86 100644
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -277,14 +277,15 @@ static void do_signal(struct task_struct *tsk)
 
 	rseq_signal_deliver(&ksig, tsk->thread.regs);
 
+#ifdef CONFIG_COMPAT
 	if (is32) {
         	if (ksig.ka.sa.sa_flags & SA_SIGINFO)
 			ret = handle_rt_signal32(&ksig, oldset, tsk);
 		else
 			ret = handle_signal32(&ksig, oldset, tsk);
-	} else {
+	} else
+#endif /* CONFIG_COMPAT */
 		ret = handle_rt_signal64(&ksig, oldset, tsk);
-	}
 
 	tsk->thread.regs->trap = 0;
 	signal_setup_done(ret, &ksig, test_thread_flag(TIF_SINGLESTEP));
diff --git a/arch/powerpc/kernel/syscall_64.c b/arch/powerpc/kernel/syscall_64.c
index 98ed970796d5..3f48262b512d 100644
--- a/arch/powerpc/kernel/syscall_64.c
+++ b/arch/powerpc/kernel/syscall_64.c
@@ -100,6 +100,7 @@ long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8,
 	/* May be faster to do array_index_nospec? */
 	barrier_nospec();
 
+#ifdef CONFIG_COMPAT
 	if (unlikely(ti_flags & _TIF_32BIT)) {
 		f = (void *)compat_sys_call_table[r0];
 
@@ -110,9 +111,9 @@ long system_call_exception(long r3, long r4, long r5, long r6, long r7, long r8,
 		r7 &= 0x00000000ffffffffULL;
 		r8 &= 0x00000000ffffffffULL;
 
-	} else {
+	} else
+#endif /* CONFIG_COMPAT */
 		f = (void *)sys_call_table[r0];
-	}
 
 	return f(r3, r4, r5, r6, r7, r8);
 }
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index d60598113a9f..2ab9327e44c4 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -667,7 +667,7 @@ static void __init vdso_setup_syscall_map(void)
 {
 	unsigned int i;
 	extern unsigned long *sys_call_table;
-#ifdef CONFIG_PPC64
+#if defined(CONFIG_PPC64) && defined(CONFIG_COMPAT)
 	extern unsigned long *compat_sys_call_table;
 #endif
 	extern unsigned long sys_ni_syscall;
@@ -678,9 +678,11 @@ static void __init vdso_setup_syscall_map(void)
 		if (sys_call_table[i] != sys_ni_syscall)
 			vdso_data->syscall_map_64[i >> 5] |=
 				0x80000000UL >> (i & 0x1f);
+#ifdef CONFIG_COMPAT
 		if (compat_sys_call_table[i] != sys_ni_syscall)
 			vdso_data->syscall_map_32[i >> 5] |=
 				0x80000000UL >> (i & 0x1f);
+#endif /* CONFIG_COMPAT */
 #else /* CONFIG_PPC64 */
 		if (sys_call_table[i] != sys_ni_syscall)
 			vdso_data->syscall_map_32[i >> 5] |=
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c
index c84bbd4298a0..0a4565820d6c 100644
--- a/arch/powerpc/perf/callchain.c
+++ b/arch/powerpc/perf/callchain.c
@@ -15,7 +15,7 @@
 #include <asm/sigcontext.h>
 #include <asm/ucontext.h>
 #include <asm/vdso.h>
-#ifdef CONFIG_PPC64
+#if defined(CONFIG_PPC64) && defined(CONFIG_COMPAT)
 #include "../kernel/ppc32.h"
 #endif
 #include <asm/pte-walk.h>
@@ -165,6 +165,7 @@ static int read_user_stack_64(unsigned long __user *ptr, unsigned long *ret)
 	return read_user_stack_slow(ptr, ret, 8);
 }
 
+#ifdef CONFIG_COMPAT
 static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
 {
 	if ((unsigned long)ptr > TASK_SIZE - sizeof(unsigned int) ||
@@ -180,6 +181,7 @@ static int read_user_stack_32(unsigned int __user *ptr, unsigned int *ret)
 
 	return read_user_stack_slow(ptr, ret, 4);
 }
+#endif
 
 static inline int valid_user_sp(unsigned long sp, int is_64)
 {
@@ -341,6 +343,7 @@ static inline int valid_user_sp(unsigned long sp, int is_64)
 
 #endif /* CONFIG_PPC64 */
 
+#if !defined(CONFIG_PPC64) || defined(CONFIG_COMPAT)
 /*
  * Layout for non-RT signal frames
  */
@@ -482,12 +485,15 @@ static void perf_callchain_user_32(struct perf_callchain_entry_ctx *entry,
 		sp = next_sp;
 	}
 }
+#endif /* 32bit */
 
 void
 perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs)
 {
-	if (current_is_64bit())
-		perf_callchain_user_64(entry, regs);
-	else
+#if !defined(CONFIG_PPC64) || defined(CONFIG_COMPAT)
+	if (!current_is_64bit())
 		perf_callchain_user_32(entry, regs);
+	else
+#endif
+		perf_callchain_user_64(entry, regs);
 }
-- 
2.22.0




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