tests/tcg: enable building for sh4

As before, using Debian SID compilers. While the compiler can be
coerced into generating big-endian code it seems the linker can't deal
with it so we only enable the building for little endian SH4.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>

tests/docker/Makefile.include

@@ -73,6 +73,7 @@ docker-image-debian-sid: NOCACHE=1
 docker-image-debian-alpha-cross: docker-image-debian-sid
 docker-image-debian-hppa-cross: docker-image-debian-sid
 docker-image-debian-m68k-cross: docker-image-debian-sid
+docker-image-debian-sh4-cross: docker-image-debian-sid
 docker-image-travis: NOUSER=1
 
 # Specialist build images, sometimes very limited tools

tests/docker/dockerfiles/debian-sh4-cross.docker

+#
+# Docker cross-compiler target
+#
+# This docker target builds on the debian sid base image which
+# contains cross compilers for Debian "ports" targets.
+#
+FROM qemu:debian-sid
+
+RUN DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt-get install -y --no-install-recommends \
+        gcc-sh4-linux-gnu \
+        libc6-dev-sh4-cross

tests/tcg/sh4/Makefile.include

+ifneq ($(TARGET_NAME), sh4eb)
+DOCKER_IMAGE=debian-sh4-cross
+DOCKER_CROSS_COMPILER=sh4-linux-gnu-gcc
+endif

tests/tcg/sh4/Makefile.target

+# -*- Mode: makefile -*-
+#
+# SuperH specific tweaks
+#
+
+# On sh Linux supports 4k, 8k, 16k and 64k pages (but only 4k currently works)
+EXTRA_RUNS+=run-test-mmap-4096 # run-test-mmap-8192 run-test-mmap-16384 run-test-mmap-65536