klibc - Nov 2015 - [klibc:master] Inline __arch_libcinit()

Commit-ID:  bc18ea796db39b8d3575948b3d0de28daee38261
Gitweb:    
http://git.kernel.org/?p=libs/klibc/klibc.git;a=commit;h=bc18ea796db39b8d3575948b3d0de28daee38261
Author:     H. Peter Anvin <hpa at zytor.com>
AuthorDate: Thu, 5 Nov 2015 08:52:33 -0800
Committer:  H. Peter Anvin <hpa at zytor.com>
CommitDate: Thu, 5 Nov 2015 14:22:01 -0800

[klibc] Inline __arch_libcinit()

__arch_libcinit() is only ever used as part of __libc_init(), so we
might as well make it an inline function.

Signed-off-by: H. Peter Anvin <hpa at zytor.com>

---
 scripts/Kbuild.klibc.include                                  | 11 +++++++++++
 usr/include/arch/i386/klibc/archconfig.h                      |  2 +-
 .../i386/archinit.c => include/arch/i386/klibc/archinit.h}    |  4 ++--
 usr/include/klibc/sysconfig.h                                 |  2 +-
 usr/klibc/arch/i386/Kbuild                                    |  2 +-
 usr/klibc/libc_init.c                                         |  7 ++++++-
 6 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/scripts/Kbuild.klibc.include b/scripts/Kbuild.klibc.include
new file mode 100644
index 0000000..b317286
--- /dev/null
+++ b/scripts/Kbuild.klibc.include
@@ -0,0 +1,11 @@
+
+# klibc-cc-option
+# Usage: cflags-y += $(call klibc-cc-option,-march=winchip-c6,-march=i586)
+
+klibc-cc-option = $(call try-run,\
+	$(CC) $(KLIBCCPPFLAGS) $(KLIBCCFLAGS) $(1) -c -xc /dev/null -o
"$$TMP",$(1),$(2))
+
+# klibc-cc-option-yn
+# Usage: flag := $(call klibc-cc-option-yn,-march=winchip-c6)
+klibc-cc-option-yn = $(call try-run,\
+	$(CC) $(KLIBCCPPFLAGS) $(KLIBCCFLAGS) $(1) -c -xc /dev/null -o
"$$TMP",y,n)
diff --git a/usr/include/arch/i386/klibc/archconfig.h
b/usr/include/arch/i386/klibc/archconfig.h
index d8db763..f070f5b 100644
--- a/usr/include/arch/i386/klibc/archconfig.h
+++ b/usr/include/arch/i386/klibc/archconfig.h
@@ -12,7 +12,7 @@
 /* The i386 <asm/signal.h> is still not clean enough for this... */
 #define _KLIBC_USE_RT_SIG 0
 
-/* We have __libc_arch_init() */
+/* We have klibc/archinit.h and __libc_archinit() */
 #define _KLIBC_HAS_ARCHINIT 1
 
 #endif				/* _KLIBC_ARCHCONFIG_H */
diff --git a/usr/klibc/arch/i386/archinit.c
b/usr/include/arch/i386/klibc/archinit.h
similarity index 78%
rename from usr/klibc/arch/i386/archinit.c
rename to usr/include/arch/i386/klibc/archinit.h
index 111d130..8995ebf 100644
--- a/usr/klibc/arch/i386/archinit.c
+++ b/usr/include/arch/i386/klibc/archinit.h
@@ -1,5 +1,5 @@
 /*
- * arch/i386/archinit.c
+ * arch/i386/include/klibc/archinit.h
  *
  * Architecture-specific libc initialization
  */
@@ -11,7 +11,7 @@
 
 extern void (*__syscall_entry)(int, ...);
 
-void __libc_archinit(void)
+static inline void __libc_archinit(void)
 {
 	if (__auxval[AT_SYSINFO])
 		__syscall_entry = (void (*)(int, ...)) __auxval[AT_SYSINFO];
diff --git a/usr/include/klibc/sysconfig.h b/usr/include/klibc/sysconfig.h
index ab947c0..c91d5b8 100644
--- a/usr/include/klibc/sysconfig.h
+++ b/usr/include/klibc/sysconfig.h
@@ -219,7 +219,7 @@
 /*
  * _KLIBC_HAS_ARCHINIT
  *
- *	This architecture uses __libc_archinit()
+ *	This architecture has klibc/archinit.h and __libc_archinit()
  */
 #ifndef _KLIBC_HAS_ARCHINIT
 # define _KLIBC_HAS_ARCHINIT 0
diff --git a/usr/klibc/arch/i386/Kbuild b/usr/klibc/arch/i386/Kbuild
index 1642374..edc7b3c 100644
--- a/usr/klibc/arch/i386/Kbuild
+++ b/usr/klibc/arch/i386/Kbuild
@@ -2,7 +2,7 @@
 # klibc .o files for i386
 #
 
-klib-y := archinit.o socketcall.o setjmp.o syscall.o varsyscall.o
+klib-y := socketcall.o setjmp.o syscall.o varsyscall.o
 klib-y += open.o openat.o vfork.o
 klib-y += libgcc/__ashldi3.o libgcc/__ashrdi3.o libgcc/__lshrdi3.o
 klib-y += libgcc/__muldi3.o  libgcc/__negdi2.o
diff --git a/usr/klibc/libc_init.c b/usr/klibc/libc_init.c
index c54d022..c5b9bab 100644
--- a/usr/klibc/libc_init.c
+++ b/usr/klibc/libc_init.c
@@ -28,6 +28,12 @@
 #include <klibc/sysconfig.h>
 #include "atexit.h"
 
+#if _KLIBC_HAS_ARCHINIT
+# include "klibc/archinit.h"
+#else
+# define __libc_archinit() ((void)0)
+#endif
+
 /* This file is included from __static_init.c or __shared_init.c */
 #ifndef SHARED
 # error "SHARED should be defined to 0 or 1"
@@ -42,7 +48,6 @@ struct auxentry {
 };
 
 extern void __libc_init_stdio(void);
-extern void __libc_archinit(void);
 
 unsigned long __auxval[_AUXVAL_MAX];