[PowerPC64LE] Use a shared LIBC_ARCH for powerpc64le.

Given that we have converted to ELFv2 for BE already, endianness is the only
difference between the two ARCHs.

As such, there is no need to differentiate LIBC_ARCH between the two.

Combining them like this lets us avoid needing to have two copies of several
bits for no good reason.

Sponsored by:	Tag1 Consulting, Inc.

lib/csu/Makefile

@@ -2,8 +2,8 @@
 
 .include <src.opts.mk>
 
-.if exists(${.CURDIR}/${MACHINE_ARCH})
-SUBDIR+= ${MACHINE_ARCH}
+.if exists(${.CURDIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
+SUBDIR+= ${MACHINE_ARCH:S/powerpc64le/powerpc64/}
 .else
 SUBDIR+= ${MACHINE_CPUARCH}
 .endif

lib/libc/Makefile

@@ -15,8 +15,8 @@ LIBC_SRCTOP?= ${.CURDIR}
 # named MACHINE_CPUARCH, but some ABIs are different enough to require
 # their own libc, so allow a directory named MACHINE_ARCH to override this.
 
-.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH})
-LIBC_ARCH=${MACHINE_ARCH}
+.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
+LIBC_ARCH=${MACHINE_ARCH:S/powerpc64le/powerpc64/}
 .else
 LIBC_ARCH=${MACHINE_CPUARCH}
 .endif

lib/libc/powerpc64/string/Makefile.inc

@@ -10,9 +10,14 @@ MDSRCS+= \
 	memmove.S \
 	memmove_vsx.S \
 	memmove_resolver.c \
-	strcpy_arch_2_05.S \
-	strcpy.c \
-	strcpy_resolver.c \
 	strncpy_arch_2_05.S \
 	strncpy.c \
 	strncpy_resolver.c
+
+# XXX Port strcpy to LE.
+.if ${MACHINE_ARCH} == "powerpc64"
+MDSRCS+= \
+	strcpy_arch_2_05.S \
+	strcpy.c \
+	strcpy_resolver.c
+.endif

libexec/rtld-elf/Makefile

@@ -32,8 +32,8 @@ MAN?=		rtld.1
 ACFLAGS+=	-DLOCORE
 CFLAGS+=	-Wall -DFREEBSD_ELF -DIN_RTLD -ffreestanding
 CFLAGS+=	-I${SRCTOP}/lib/csu/common
-.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH})
-RTLD_ARCH=	${MACHINE_ARCH}
+.if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
+RTLD_ARCH=	${MACHINE_ARCH:S/powerpc64le/powerpc64/}
 .else
 RTLD_ARCH=	${MACHINE_CPUARCH}
 .endif

libexec/rtld-elf/rtld-libc/Makefile.inc

@@ -5,8 +5,8 @@
 .include <bsd.compiler.mk>
 
 LIBC_SRCTOP=${SRCTOP}/lib/libc
-.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH})
-LIBC_ARCH=${MACHINE_ARCH}
+.if exists(${LIBC_SRCTOP}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
+LIBC_ARCH=${MACHINE_ARCH:S/powerpc64le/powerpc64/}
 .else
 LIBC_ARCH=${MACHINE_CPUARCH}
 .endif