From 2e24b11ccc354581562f2ed014cd6f936aad7ddc Mon Sep 17 00:00:00 2001
From: Jonathan Metzman <metzman@chromium.org>
Date: Tue, 30 Apr 2019 17:58:54 +0000
Subject: Enable x86 builds

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@359583 91177308-0d34-0410-b5e6-96231b3b80d8
---
 cmake/config-ix.cmake            | 2 +-
 lib/fuzzer/CMakeLists.txt        | 9 +++++++--
 test/fuzzer/dataflow.test        | 3 +--
 test/fuzzer/fork.test            | 4 ++--
 test/fuzzer/only-some-bytes.test | 3 +--
 5 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index b072c1180..2d9b5d664 100644
--- a/cmake/config-ix.cmake
+++ b/cmake/config-ix.cmake
@@ -230,7 +230,7 @@ set(ALL_SANITIZER_COMMON_SUPPORTED_ARCH ${X86} ${X86_64} ${PPC64}
 set(ALL_ASAN_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM32} ${ARM64}
     ${MIPS32} ${MIPS64} ${PPC64} ${S390X})
 set(ALL_DFSAN_SUPPORTED_ARCH ${X86_64} ${MIPS64} ${ARM64})
-set(ALL_FUZZER_SUPPORTED_ARCH ${X86_64} ${ARM64})
+set(ALL_FUZZER_SUPPORTED_ARCH ${X86} ${X86_64} ${ARM64})
 
 if(APPLE)
   set(ALL_LSAN_SUPPORTED_ARCH ${X86} ${X86_64} ${MIPS64} ${ARM64})
diff --git a/lib/fuzzer/CMakeLists.txt b/lib/fuzzer/CMakeLists.txt
index 602f33297..42158cc26 100644
--- a/lib/fuzzer/CMakeLists.txt
+++ b/lib/fuzzer/CMakeLists.txt
@@ -120,11 +120,16 @@ add_compiler_rt_runtime(clang_rt.fuzzer_no_main
 if(OS_NAME MATCHES "Linux|Fuchsia" AND
    COMPILER_RT_LIBCXX_PATH AND
    COMPILER_RT_LIBCXXABI_PATH)
-  macro(partially_link_libcxx name dir arch)
+ macro(partially_link_libcxx name dir arch)
+    if (${arch} MATCHES "i386")
+      set(EMULATION_ARGUMENT "-m" "elf_i386")
+    else()
+      set(EMULATION_ARGUMENT "")
+    endif()
     set(cxx_${arch}_merge_dir "${CMAKE_CURRENT_BINARY_DIR}/cxx_${arch}_merge.dir")
     file(MAKE_DIRECTORY ${cxx_${arch}_merge_dir})
     add_custom_command(TARGET clang_rt.${name}-${arch} POST_BUILD
-      COMMAND ${CMAKE_LINKER} --whole-archive "$<TARGET_LINKER_FILE:clang_rt.${name}-${arch}>" --no-whole-archive ${dir}/lib/libc++.a -r -o ${name}.o
+      COMMAND ${CMAKE_LINKER} --whole-archive ${EMULATION_ARGUMENT} "$<TARGET_LINKER_FILE:clang_rt.${name}-${arch}>" --no-whole-archive ${dir}/lib/libc++.a -r -o ${name}.o
       COMMAND ${CMAKE_OBJCOPY} --localize-hidden ${name}.o
       COMMAND ${CMAKE_COMMAND} -E remove "$<TARGET_LINKER_FILE:clang_rt.${name}-${arch}>"
       COMMAND ${CMAKE_AR} qcs "$<TARGET_LINKER_FILE:clang_rt.${name}-${arch}>" ${name}.o
diff --git a/test/fuzzer/dataflow.test b/test/fuzzer/dataflow.test
index 36ec55881..3fd2a9580 100644
--- a/test/fuzzer/dataflow.test
+++ b/test/fuzzer/dataflow.test
@@ -1,6 +1,5 @@
 # Tests the data flow tracer.
-REQUIRES: linux
-UNSUPPORTED: aarch64
+REQUIRES: linux, x86_64
 
 # Build the tracer and the test.
 RUN: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fsanitize=dataflow  %S/../../lib/fuzzer/dataflow/DataFlow.cpp -o  %t-DataFlow.o
diff --git a/test/fuzzer/fork.test b/test/fuzzer/fork.test
index 393a9f66b..703fdbaf7 100644
--- a/test/fuzzer/fork.test
+++ b/test/fuzzer/fork.test
@@ -11,8 +11,8 @@ OOM: ERROR: libFuzzer: out-of-memory
 RUN: %cpp_compiler %S/OutOfMemoryTest.cpp -o %t-OutOfMemoryTest
 RUN: not %run %t-OutOfMemoryTest -fork=1 -ignore_ooms=0  -rss_limit_mb=128 2>&1 | FileCheck %s --check-prefix=OOM
 
-# access-violation is the error thrown on Windows.
-CRASH: {{SEGV|access-violation}} on unknown address 0x000000000000
+# access-violation is the error thrown on Windows. Address will be smaller on x86.
+CRASH: {{SEGV|access-violation}} on unknown address {{0x000000000000|0x00000000}}
 RUN: %cpp_compiler %S/ShallowOOMDeepCrash.cpp -o %t-ShallowOOMDeepCrash
 RUN: not %run %t-ShallowOOMDeepCrash -fork=1 -rss_limit_mb=128 2>&1 | FileCheck %s --check-prefix=CRASH
 
diff --git a/test/fuzzer/only-some-bytes.test b/test/fuzzer/only-some-bytes.test
index 861718384..a783548da 100644
--- a/test/fuzzer/only-some-bytes.test
+++ b/test/fuzzer/only-some-bytes.test
@@ -1,6 +1,5 @@
 # Tests the data flow tracer.
-REQUIRES: linux
-UNSUPPORTED: aarch64
+REQUIRES: linux, x86_64
 
 # Build the tracer and the test.
 RUN: %no_fuzzer_cpp_compiler -c -fno-sanitize=all -fsanitize=dataflow  %S/../../lib/fuzzer/dataflow/DataFlow.cpp -o  %t-DataFlow.o
-- 
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