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| author | Michael J. Spencer <bigcheesegs@gmail.com> | 2012-02-23 21:56:08 +0000 |
|---|---|---|
| committer | Michael J. Spencer <bigcheesegs@gmail.com> | 2012-02-23 21:56:08 +0000 |
| commit | 32d22ee11dc03a69ef22b0794e301cd32176019d (patch) | |
| tree | 1ce48762c541f04568898942863d8abfdf0ca199 | |
| parent | 8ce6b7daf72627fc8bd95e62a7c4a037eaf3772e (diff) | |
Emit global ctors into .CRT$XCU instead of .ctors on Win32. Patch by Joe Groff!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151289 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/MC/MCObjectFileInfo.cpp | 22 | ||||
| -rw-r--r-- | test/MC/COFF/global_ctors.ll | 28 |
2 files changed, 44 insertions, 6 deletions
diff --git a/lib/MC/MCObjectFileInfo.cpp b/lib/MC/MCObjectFileInfo.cpp index 1a27df5dc0..7dd06e7059 100644 --- a/lib/MC/MCObjectFileInfo.cpp +++ b/lib/MC/MCObjectFileInfo.cpp @@ -409,12 +409,22 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) { COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ, SectionKind::getReadOnly()); - StaticCtorSection = - Ctx->getCOFFSection(".ctors", - COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | - COFF::IMAGE_SCN_MEM_READ | - COFF::IMAGE_SCN_MEM_WRITE, - SectionKind::getDataRel()); + if (T.getOS() == Triple::Win32) { + StaticCtorSection = + Ctx->getCOFFSection(".CRT$XCU", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ, + SectionKind::getReadOnly()); + } else { + StaticCtorSection = + Ctx->getCOFFSection(".ctors", + COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | + COFF::IMAGE_SCN_MEM_READ | + COFF::IMAGE_SCN_MEM_WRITE, + SectionKind::getDataRel()); + } + + StaticDtorSection = Ctx->getCOFFSection(".dtors", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | diff --git a/test/MC/COFF/global_ctors.ll b/test/MC/COFF/global_ctors.ll new file mode 100644 index 0000000000..4d6b1c7d99 --- /dev/null +++ b/test/MC/COFF/global_ctors.ll @@ -0,0 +1,28 @@ +; Test that global ctors are emitted into the proper COFF section for the +; target. Mingw uses .ctors, whereas MSVC uses .CRT$XC*. +; RUN: llc < %s -mtriple i686-pc-win32 | FileCheck %s --check-prefix WIN32 +; RUN: llc < %s -mtriple x86_64-pc-win32 | FileCheck %s --check-prefix WIN32 +; RUN: llc < %s -mtriple i686-pc-mingw32 | FileCheck %s --check-prefix MINGW32 +; RUN: llc < %s -mtriple x86_64-pc-mingw32 | FileCheck %s --check-prefix MINGW32 + +@.str = private unnamed_addr constant [13 x i8] c"constructing\00", align 1 +@.str2 = private unnamed_addr constant [5 x i8] c"main\00", align 1 + +@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @a_global_ctor }] + +declare i32 @puts(i8*) + +define void @a_global_ctor() nounwind { + %1 = call i32 @puts(i8* getelementptr inbounds ([13 x i8]* @.str, i32 0, i32 0)) + ret void +} + +define i32 @main() nounwind { + %1 = call i32 @puts(i8* getelementptr inbounds ([5 x i8]* @.str2, i32 0, i32 0)) + ret i32 0 +} + +; WIN32: .section .CRT$XCU,"r" +; WIN32: a_global_ctor +; MINGW32: .section .ctors,"w" +; MINGW32: a_global_ctor |