Add ARM EABI aliases and remove functions that are also provided by our libc.

This allows linking code compiled by clang with the gcc compiler driver
and makes sure we always use the softfloat implementation in libc.  The
libc softfloat implementation is preferred over the one in libgcc as it
implements rounding modes and floating point exceptions.

ok patrick@

diff --git a/gnu/gcc/gcc/config/arm/openbsd1.h b/gnu/gcc/gcc/config/arm/openbsd1.h
index afd2e3b..ed79f6e 100644 (file)
--- a/gnu/gcc/gcc/config/arm/openbsd1.h
+++ b/gnu/gcc/gcc/config/arm/openbsd1.h
@@ -24,3 +24,38 @@ Boston, MA 02111-1307, USA.  */
 
 /* use EABI frame unwinding tables.  */
 #define TARGET_UNWIND_INFO 1
+
+#if defined (__thumb__)
+#define RENAME_LIBRARY_SET ".thumb_set"
+#else
+#define RENAME_LIBRARY_SET ".set"
+#endif
+
+/* Make __aeabi_AEABI_NAME an alias for __GCC_NAME.  */
+#define RENAME_LIBRARY(GCC_NAME, AEABI_NAME)           \
+  __asm__ (".globl\t__aeabi_" #AEABI_NAME "\n"         \
+          RENAME_LIBRARY_SET "\t__aeabi_" #AEABI_NAME  \
+            ", __" #GCC_NAME "\n");
+
+/* Give some libgcc functions an additional __aeabi name.  */
+#ifdef L_muldi3
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, lmul)
+#endif
+#ifdef L_fixdfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixdfdi, d2lz)
+#endif
+#ifdef L_fixunsdfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfdi, d2ulz)
+#endif
+#ifdef L_fixsfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixsfdi, f2lz)
+#endif
+#ifdef L_fixunssfdi
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfdi, f2ulz)
+#endif
+#ifdef L_floatdidf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdidf, l2d)
+#endif
+#ifdef L_floatdisf
+#define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, l2f)
+#endif

diff --git a/gnu/gcc/gcc/config/floatunsidf.c b/gnu/gcc/gcc/config/floatunsidf.c
index ff28112..c23d3a1 100644 (file)
--- a/gnu/gcc/gcc/config/floatunsidf.c
+++ b/gnu/gcc/gcc/config/floatunsidf.c
@@ -13,3 +13,7 @@ __floatunsidf (USItype u)
                                 << (sizeof (USItype) * __CHAR_BIT__ - 1));
   return r;
 }
+
+#ifdef __ARM_EABI__
+__asm__ (".globl\t__aeabi_ui2d\n.set\t__aeabi_ui2d, __floatunsidf\n");
+#endif

diff --git a/gnu/gcc/gcc/config/floatunsisf.c b/gnu/gcc/gcc/config/floatunsisf.c
index 11d4aa7..69951ef 100644 (file)
--- a/gnu/gcc/gcc/config/floatunsisf.c
+++ b/gnu/gcc/gcc/config/floatunsisf.c
@@ -16,3 +16,7 @@ __floatunsisf (USItype u)
   else
     return (SFtype) s;
 }
+
+#ifdef __ARM_EABI__
+__asm__ (".globl\t__aeabi_ui2f\n.set\t__aeabi_ui2f, __floatunsisf\n");
+#endif

diff --git a/gnu/usr.bin/cc/libgcc/Makefile b/gnu/usr.bin/cc/libgcc/Makefile
index 0f82f3b..d83f6ac 100644 (file)
--- a/gnu/usr.bin/cc/libgcc/Makefile
+++ b/gnu/usr.bin/cc/libgcc/Makefile
@@ -1,5 +1,5 @@
 # $FreeBSD: src/gnu/lib/libgcc/Makefile,v 1.58.8.1 2009/04/15 03:14:26 kensmith Exp $
-# $OpenBSD: Makefile,v 1.29 2016/09/01 11:03:09 patrick Exp $
+# $OpenBSD: Makefile,v 1.30 2018/01/04 19:46:31 kettenis Exp $
 
 .include <bsd.own.mk>
 
@@ -124,8 +124,13 @@ LIB2FUNCS_EXTRA = qrnnd.asm
 CFLAGS+=       -Dinhibit_libc -fno-inline
 LIB1ASMSRC =   lib1funcs.asm
 LIB1ASMFUNCS =  _dvmd_tls _bb_init_func
+LIB1ASMFUNCS+= _aeabi_lcmp _aeabi_ulcmp _aeabi_ldivmod _aeabi_uldivmod
+LIB1ASMFUNCS+= _cmpsf2 _fixunssfsi _negsf2
+LIB1ASMFUNCS+= _cmpdf2 _fixunsdfsi _negdf2
 LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c
 LIB2ADDEH =    unwind-arm.c libunwind.S pr-support.c unwind-c.c
+SWFLOATFUNCS = 
+DWFLOATFUNCS = _floatundisf _floatundidf
 
 # Not now
 #LIB1ASMFUNCS =  _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func