Revert "[compiler-rt] Simple crtbegin.o and crtend.o implementation"

This reverts commit r359576 since it's failing on Windows bots.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@359579 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 0 insertions, 209 deletions

diff --git a/lib/crt/CMakeLists.txt b/lib/crt/CMakeLists.txt
deleted file mode 100644
index f0e8118e9..000000000
--- a/lib/crt/CMakeLists.txt
+++ /dev/null
@@ -1,90 +0,0 @@
-add_compiler_rt_component(crt)
-
-function(check_cxx_section_exists section output)
-  cmake_parse_arguments(ARG "" "" "SOURCE;FLAGS" ${ARGN})
-  if(NOT ARG_SOURCE)
-    set(ARG_SOURCE "int main() { return 0; }\n")
-  endif()
-
-  string(RANDOM TARGET_NAME)
-  set(TARGET_NAME "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/cmTC_${TARGET_NAME}.dir")
-  file(MAKE_DIRECTORY ${TARGET_NAME})
-
-  file(WRITE "${TARGET_NAME}/CheckSectionExists.c" "${ARG_SOURCE}\n")
-
-  string(REGEX MATCHALL "<[A-Za-z0-9_]*>" substitutions
-         ${CMAKE_C_COMPILE_OBJECT})
-
-  set(try_compile_flags "${ARG_FLAGS}")
-  if(CMAKE_C_COMPILER_ID MATCHES Clang AND CMAKE_C_COMPILER_TARGET)
-    list(APPEND try_compile_flags "-target ${CMAKE_C_COMPILER_TARGET}")
-  endif()
-
-  string(REPLACE ";" " " extra_flags "${try_compile_flags}")
-
-  set(test_compile_command "${CMAKE_C_COMPILE_OBJECT}")
-  foreach(substitution ${substitutions})
-    if(substitution STREQUAL "<CMAKE_C_COMPILER>")
-      string(REPLACE "<CMAKE_C_COMPILER>"
-             "${CMAKE_C_COMPILER}" test_compile_command ${test_compile_command})
-    elseif(substitution STREQUAL "<OBJECT>")
-      string(REPLACE "<OBJECT>" "${TARGET_NAME}/CheckSectionExists.o"
-             test_compile_command ${test_compile_command})
-    elseif(substitution STREQUAL "<SOURCE>")
-      string(REPLACE "<SOURCE>" "${TARGET_NAME}/CheckSectionExists.c"
-             test_compile_command ${test_compile_command})
-    elseif(substitution STREQUAL "<FLAGS>")
-      string(REPLACE "<FLAGS>" "${CMAKE_C_FLAGS} ${extra_flags}"
-             test_compile_command ${test_compile_command})
-    else()
-      string(REPLACE "${substitution}" "" test_compile_command
-             ${test_compile_command})
-    endif()
-  endforeach()
-
-  string(REPLACE " " ";" test_compile_command "${test_compile_command}")
-
-  execute_process(
-    COMMAND ${test_compile_command}
-    RESULT_VARIABLE TEST_RESULT
-    OUTPUT_VARIABLE TEST_OUTPUT
-    ERROR_VARIABLE TEST_ERROR
-  )
-
-  execute_process(
-    COMMAND ${CMAKE_OBJDUMP} -h "${TARGET_NAME}/CheckSectionExists.o"
-    RESULT_VARIABLE CHECK_RESULT
-    OUTPUT_VARIABLE CHECK_OUTPUT
-    ERROR_VARIABLE CHECK_ERROR
-  )
-  string(FIND "${CHECK_OUTPUT}" "${section}" SECTION_FOUND)
-
-  if(NOT SECTION_FOUND EQUAL -1)
-    set(${output} TRUE PARENT_SCOPE)
-  else()
-    set(${output} FALSE PARENT_SCOPE)
-  endif()
-
-  file(REMOVE_RECURSE ${TARGET_NAME})
-endfunction()
-
-check_cxx_section_exists(".init_array" COMPILER_RT_HAS_INITFINI_ARRAY
-  SOURCE "__attribute__((constructor)) void f() {}\nint main() { return 0; }\n")
-
-append_list_if(COMPILER_RT_HAS_INITFINI_ARRAY -DCRT_HAS_INITFINI_ARRAY CRT_CFLAGS)
-append_list_if(COMPILER_RT_HAS_FPIC_FLAG -fPIC CRT_CFLAGS)
-
-foreach(arch ${CRT_SUPPORTED_ARCH})
-  add_compiler_rt_runtime(clang_rt.crtbegin
-    OBJECT
-    ARCHS ${arch}
-    SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtbegin.c
-    CFLAGS ${CRT_CFLAGS}
-    PARENT_TARGET crt)
-  add_compiler_rt_runtime(clang_rt.crtend
-    OBJECT
-    ARCHS ${arch}
-    SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/crtend.c
-    CFLAGS ${CRT_CFLAGS}
-    PARENT_TARGET crt)
-endforeach()
diff --git a/lib/crt/crtbegin.c b/lib/crt/crtbegin.c
deleted file mode 100644
index 796094f65..000000000
--- a/lib/crt/crtbegin.c
+++ /dev/null
@@ -1,97 +0,0 @@
-//===-- crtbegin.c - Start of constructors and destructors ----------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include <stddef.h>
-
-__attribute__((visibility("hidden"))) void *__dso_handle = &__dso_handle;
-
-static void *__EH_FRAME_LIST__[]
-    __attribute__((section(".eh_frame"), aligned(sizeof(void *)))) = {};
-
-extern void __register_frame_info(const void *, void *) __attribute__((weak));
-extern void *__deregister_frame_info(const void *) __attribute__((weak));
-
-#ifndef CRT_HAS_INITFINI_ARRAY
-typedef void (*fp)(void);
-
-static fp __CTOR_LIST__[]
-    __attribute__((section(".ctors"), aligned(sizeof(fp)))) = {(fp)-1};
-extern fp __CTOR_LIST_END__[];
-#endif
-
-extern void __cxa_finalize(void *) __attribute__((weak));
-
-static void __attribute__((used)) __do_init() {
-  static _Bool __initialized;
-  if (__builtin_expect(__initialized, 0))
-    return;
-  __initialized = 1;
-
-  static struct { void *p[8]; } __object;
-  if (__register_frame_info)
-    __register_frame_info(__EH_FRAME_LIST__, &__object);
-
-#ifndef CRT_HAS_INITFINI_ARRAY
-  const size_t n = __CTOR_LIST_END__ - __CTOR_LIST__ - 1;
-  for (size_t i = n; i >= 1; i--) __CTOR_LIST__[i]();
-#endif
-}
-
-#ifdef CRT_HAS_INITFINI_ARRAY
-__attribute__((section(".init_array"),
-               used)) static void (*__init)(void) = __do_init;
-#else  // CRT_HAS_INITFINI_ARRAY
-#if defined(__i386__) || defined(__x86_64__)
-asm(".pushsection .init,\"ax\",@progbits\n\t"
-    "call " __USER_LABEL_PREFIX__ "__do_init\n\t"
-    ".popsection");
-#elif defined(__arm__)
-asm(".pushsection .init,\"ax\",%progbits\n\t"
-    "bl " __USER_LABEL_PREFIX__ "__do_init\n\t"
-    ".popsection");
-#endif  // CRT_HAS_INITFINI_ARRAY
-#endif
-
-#ifndef CRT_HAS_INITFINI_ARRAY
-static fp __DTOR_LIST__[]
-    __attribute__((section(".dtors"), aligned(sizeof(fp)))) = {(fp)-1};
-extern fp __DTOR_LIST_END__[];
-#endif
-
-static void __attribute__((used)) __do_fini() {
-  static _Bool __finalized;
-  if (__builtin_expect(__finalized, 0))
-    return;
-  __finalized = 1;
-
-  if (__cxa_finalize)
-    __cxa_finalize(__dso_handle);
-
-#ifndef CRT_HAS_INITFINI_ARRAY
-  if (__deregister_frame_info)
-    __deregister_frame_info(__EH_FRAME_LIST__);
-
-  const size_t n = __DTOR_LIST_END__ - __DTOR_LIST__ - 1;
-  for (size_t i = 1; i < n; i++) __DTOR_LIST__[i]();
-#endif
-}
-
-#ifdef CRT_HAS_INITFINI_ARRAY
-__attribute__((section(".fini_array"),
-               used)) static void (*__fini)(void) = __do_fini;
-#else  // CRT_HAS_INITFINI_ARRAY
-#if defined(__i386__) || defined(__x86_64__)
-asm(".pushsection .fini,\"ax\",@progbits\n\t"
-    "call " __USER_LABEL_PREFIX__ "__do_fini\n\t"
-    ".popsection");
-#elif defined(__arm__)
-asm(".pushsection .fini,\"ax\",%progbits\n\t"
-    "bl " __USER_LABEL_PREFIX__ "__do_fini\n\t"
-    ".popsection");
-#endif
-#endif  // CRT_HAS_INIT_FINI_ARRAY
diff --git a/lib/crt/crtend.c b/lib/crt/crtend.c
deleted file mode 100644
index ebcc60b89..000000000
--- a/lib/crt/crtend.c
+++ /dev/null
@@ -1,22 +0,0 @@
-//===-- crtend.c - End of constructors and destructors --------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#include <stdint.h>
-
-// Put 4-byte zero which is the length field in FDE at the end as a terminator.
-const int32_t __EH_FRAME_LIST_END__[]
-    __attribute__((section(".eh_frame"), aligned(sizeof(int32_t)),
-                   visibility("hidden"), used)) = {0};
-
-#ifndef CRT_HAS_INITFINI_ARRAY
-typedef void (*fp)(void);
-fp __CTOR_LIST_END__[]
-    __attribute__((section(".ctors"), visibility("hidden"), used)) = {0};
-fp __DTOR_LIST_END__[]
-    __attribute__((section(".dtors"), visibility("hidden"), used)) = {0};
-#endif