Merge remote-tracking branch 'remotes/stsquad/tags/pull-configure-fixes-160920-1' into staging

configure tweaks for deprecation

  - iotest fix for readlink -f
  - linux-user, report rather than assert on mmap failure
  - clean-up and re-factor the logic
  - add tilegx-linux-user to deprecated_targets_list
  - add [lm32|unicore32]-softmmu deprecated_targets_list
  - add a gitlab deprecated builds test

# gpg: Signature made Wed 16 Sep 2020 10:11:41 BST
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-configure-fixes-160920-1:
  configure: add [lm32|unicore32]-softmmu to deprecation logic
  gitlab: create a build-deprecated target
  configure: include tilegx-linux-user in the deprecation logic
  configure: clean-up the target-list-exclude logic
  configure: also skip deprecated targets with target-list-exclude
  configure: move deprecated feature processing to supported_target
  iotests: Drop readlink -f
  linux-user: test, don't assert addr != test in pgb_reserved_va

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 37 insertions, 25 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 72e8604..a18e18b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -134,7 +134,7 @@ build-system-fedora:
   variables:
     IMAGE: fedora
     CONFIGURE_ARGS: --disable-gcrypt --enable-nettle
-    TARGETS: tricore-softmmu unicore32-softmmu microblaze-softmmu mips-softmmu
+    TARGETS: tricore-softmmu microblaze-softmmu mips-softmmu
       xtensa-softmmu m68k-softmmu riscv32-softmmu ppc-softmmu sparc64-softmmu
     MAKE_CHECK_ARGS: check-build
   artifacts:
@@ -166,7 +166,7 @@ build-system-centos:
   variables:
     IMAGE: centos8
     CONFIGURE_ARGS: --disable-nettle --enable-gcrypt
-    TARGETS: ppc64-softmmu lm32-softmmu or1k-softmmu s390x-softmmu
+    TARGETS: ppc64-softmmu or1k-softmmu s390x-softmmu
       x86_64-softmmu rx-softmmu sh4-softmmu nios2-softmmu
     MAKE_CHECK_ARGS: check-build
   artifacts:
@@ -254,6 +254,17 @@ build-clang:
       ppc-softmmu s390x-softmmu arm-linux-user
     MAKE_CHECK_ARGS: check
 
+# These targets are on the way out
+build-deprecated:
+  <<: *native_build_job_definition
+  variables:
+    IMAGE: debian-all-test-cross
+    CONFIGURE_ARGS: --disable-docs --disable-tools
+    MAKE_CHECK_ARGS: check-tcg
+    TARGETS: ppc64abi32-linux-user tilegx-linux-user lm32-softmmu
+      unicore32-softmmu
+  allow_failure: true
+
 build-oss-fuzz:
   <<: *native_build_job_definition
   variables:
diff --git a/.shippable.yml b/.shippable.yml
index 89d8be4..0b4fd6d 100644
--- a/.shippable.yml
+++ b/.shippable.yml
@@ -8,7 +8,7 @@ env:
     - IMAGE=debian-amd64
       TARGET_LIST=x86_64-softmmu,x86_64-linux-user
     - IMAGE=debian-win32-cross
-      TARGET_LIST=arm-softmmu,i386-softmmu,lm32-softmmu
+      TARGET_LIST=arm-softmmu,i386-softmmu
     - IMAGE=debian-win64-cross
       TARGET_LIST=aarch64-softmmu,sparc64-softmmu,x86_64-softmmu
     - IMAGE=debian-armel-cross
diff --git a/.travis.yml b/.travis.yml
index 6534163..c75221d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -344,10 +344,9 @@ jobs:
     # Run check-tcg against linux-user (with plugins)
     # we skip sparc64-linux-user until it has been fixed somewhat
     # we skip cris-linux-user as it doesn't use the common run loop
-    # we skip ppc64abi32-linux-user as it seems to have a broken libc
     - name: "GCC plugins check-tcg (user)"
       env:
-        - CONFIG="--disable-system --enable-plugins --enable-debug-tcg --target-list-exclude=sparc64-linux-user,cris-linux-user,ppc64abi32-linux-user"
+        - CONFIG="--disable-system --enable-plugins --enable-debug-tcg --target-list-exclude=sparc64-linux-user,cris-linux-user"
         - TEST_BUILD_CMD="make build-tcg"
         - TEST_CMD="make check-tcg"
         - CACHE_NAME="${TRAVIS_BRANCH}-linux-gcc-debug-tcg"
diff --git a/configure b/configure
index ce27eaf..7564479 100755
--- a/configure
+++ b/configure
@@ -280,6 +280,9 @@ supported_whpx_target() {
     return 1
 }
 
+deprecated_targets_list=ppc64abi32-linux-user,tilegx-linux-user,lm32-softmmu,unicore32-softmmu
+deprecated_features=""
+
 supported_target() {
     case "$1" in
         *-softmmu)
@@ -301,6 +304,12 @@ supported_target() {
             return 1
             ;;
     esac
+
+    # if a deprecated target is enabled we note it here
+    if echo "$deprecated_targets_list" | grep -q "$1"; then
+        add_to deprecated_features $1
+    fi
+
     test "$tcg" = "yes" && return 0
     supported_kvm_target "$1" && return 0
     supported_xen_target "$1" && return 0
@@ -542,8 +551,6 @@ gettext=""
 bogus_os="no"
 malloc_trim=""
 
-deprecated_features=""
-
 # parse CC options first
 for opt do
   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
@@ -1722,22 +1729,19 @@ if [ "$bsd_user" = "yes" ]; then
     mak_wilds="${mak_wilds} $source_path/default-configs/*-bsd-user.mak"
 fi
 
-if test -z "$target_list_exclude" -a -z "$target_list"; then
-    # if the user doesn't specify anything lets skip deprecating stuff
-    target_list_exclude=ppc64abi32-linux-user
+# If the user doesn't explicitly specify a deprecated target we will
+# skip it.
+if test -z "$target_list"; then
+    if test -z "$target_list_exclude"; then
+        target_list_exclude="$deprecated_targets_list"
+    else
+        target_list_exclude="$target_list_exclude,$deprecated_targets_list"
+    fi
 fi
 
-exclude_list=$(echo "$target_list_exclude" | sed -e 's/,/ /g')
 for config in $mak_wilds; do
     target="$(basename "$config" .mak)"
-    exclude="no"
-    for excl in $exclude_list; do
-        if test "$excl" = "$target"; then
-            exclude="yes"
-            break;
-        fi
-    done
-    if test "$exclude" = "no"; then
+    if echo "$target_list_exclude" | grep -vq "$target"; then
         default_target_list="${default_target_list} $target"
     fi
 done
@@ -7668,7 +7672,6 @@ case "$target_name" in
     TARGET_SYSTBL_ABI=common,nospu,32
     echo "TARGET_ABI32=y" >> $config_target_mak
     gdb_xml_files="power64-core.xml power-fpu.xml power-altivec.xml power-spe.xml power-vsx.xml"
-    deprecated_features="ppc64abi32 ${deprecated_features}"
   ;;
   riscv32)
     TARGET_BASE_ARCH=riscv
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 4961e61..f6022fd 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -2331,14 +2331,13 @@ static void pgb_reserved_va(const char *image_name, abi_ulong guest_loaddr,
     assert(guest_base != 0);
     test = g2h(0);
     addr = mmap(test, reserved_va, PROT_NONE, flags, -1, 0);
-    if (addr == MAP_FAILED) {
+    if (addr == MAP_FAILED || addr != test) {
         error_report("Unable to reserve 0x%lx bytes of virtual address "
-                     "space (%s) for use as guest address space (check your "
-                     "virtual memory ulimit setting or reserve less "
-                     "using -R option)", reserved_va, strerror(errno));
+                     "space at %p (%s) for use as guest address space (check your"
+                     "virtual memory ulimit setting, min_mmap_addr or reserve less "
+                     "using -R option)", reserved_va, test, strerror(errno));
         exit(EXIT_FAILURE);
     }
-    assert(addr == test);
 }
 
 void probe_guest_base(const char *image_name, abi_ulong guest_loaddr,