From 2a4183234a45ba28db5ce16cf3ccdd70cdef3b7c Mon Sep 17 00:00:00 2001
From: Piotr Kubaj <pkubaj@FreeBSD.org>
Date: Wed, 16 Dec 2020 22:26:18 +0000
Subject: [PATCH] rs6000: Add support for powerpc64le-unknown-freebsd

This implements support for powerpc64le architecture on FreeBSD.  Since
we don't have powerpcle (32-bit), I did not add support for powerpcle
here. This remains to be changed if there is powerpcle support in the
future.

2020-12-15  Piotr Kubaj  <pkubaj@FreeBSD.org>

gcc/
	* config.gcc (powerpc*le-*-freebsd*): Add.
	* configure.ac (powerpc*le-*-freebsd*): Ditto.
	* configure: Regenerate.
	* config/rs6000/freebsd64.h (ASM_SPEC_COMMON): Use ENDIAN_SELECT.
	(DEFAULT_ASM_ENDIAN): Add little endian support.
	(LINK_OS_FREEBSD_SPEC64): Ditto.
---
 gcc/config.gcc                |  4 ++++
 gcc/config/rs6000/freebsd64.h | 12 +++++++++---
 gcc/configure                 |  3 +++
 gcc/configure.ac              |  3 +++
 4 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 81b552383fb..70ecc51c1cf 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -2865,6 +2865,10 @@ powerpc*-*-freebsd*)
 	tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h ${fbsd_tm_file} rs6000/sysv4.h"
 	extra_options="${extra_options} rs6000/sysv4.opt"
 	tmake_file="rs6000/t-fprules rs6000/t-ppcos ${tmake_file} rs6000/t-ppccomm"
+	case ${target} in
+	    powerpc*le-*-*)
+		tm_file="${tm_file} rs6000/sysv4le.h" ;;
+	esac
 	case ${target} in
 	     powerpc64*)
 	    	tm_file="${tm_file} rs6000/default64.h rs6000/freebsd64.h"
diff --git a/gcc/config/rs6000/freebsd64.h b/gcc/config/rs6000/freebsd64.h
index 4b2da571c4a..390bc4b73e6 100644
--- a/gcc/config/rs6000/freebsd64.h
+++ b/gcc/config/rs6000/freebsd64.h
@@ -99,8 +99,8 @@ extern int dot_symbols;
 #define ASM_SPEC64 "-a64"
 
 #define ASM_SPEC_COMMON "%(asm_cpu) \
-%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}} \
-%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian}"
+%{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}" \
+  ENDIAN_SELECT(" -mbig", " -mlittle", DEFAULT_ASM_ENDIAN)
 
 #undef	SUBSUBTARGET_EXTRA_SPECS
 #define SUBSUBTARGET_EXTRA_SPECS					\
@@ -122,9 +122,15 @@ extern int dot_symbols;
     %{static:-Bstatic}} \
   %{symbolic:-Bsymbolic}"
 
+#undef  DEFAULT_ASM_ENDIAN
 #define LINK_OS_FREEBSD_SPEC32 "-melf32ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF
-  
+#if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+#define DEFAULT_ASM_ENDIAN " -mlittle"
+#define LINK_OS_FREEBSD_SPEC64 "-melf64lppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF
+#else
+#define DEFAULT_ASM_ENDIAN " -mbig"
 #define LINK_OS_FREEBSD_SPEC64 "-melf64ppc_fbsd " LINK_OS_FREEBSD_SPEC_DEF
+#endif
 
 #undef	MULTILIB_DEFAULTS
 #define MULTILIB_DEFAULTS { "m64" }
diff --git a/gcc/configure b/gcc/configure
index 9a27e459f14..eedd8626cfd 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -30185,6 +30185,9 @@ case "$target:$tm_file" in
      *-*-linux*)
      emul_name="-melf64ppc"
       ;;
+     *le-*-freebsd*)
+     emul_name="-melf64lppc_fbsd"
+      ;;
      *-*-freebsd*)
      emul_name="-melf64ppc_fbsd"
       ;;
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 062f57fa12b..ee982bee867 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -6274,6 +6274,9 @@ case "$target:$tm_file" in
      *-*-linux*)
      emul_name="-melf64ppc"
       ;;
+     *le-*-freebsd*)
+     emul_name="-melf64lppc_fbsd"
+      ;;
      *-*-freebsd*)
      emul_name="-melf64ppc_fbsd"
       ;;