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author | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
commit | 207855cff9b4811004b9720f28a5bd0adf3784b7 (patch) | |
tree | 341cb2f4392d2d0af87f4cd7b694a87333c47cc7 /lib/MC | |
parent | 147b7cad2fefa3260e2da8f7cfe31ac07f352ceb (diff) | |
download | external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.zip external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.gz external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.bz2 |
Introducing the "linker_weak" linkage type. This will be used for Objective-C
metadata types which should be marked as "weak", but which the linker will
remove upon final linkage. For example, the "objc_msgSend_fixup_alloc" symbol is
defined like this:
.globl l_objc_msgSend_fixup_alloc
.weak_definition l_objc_msgSend_fixup_alloc
.section __DATA, __objc_msgrefs, coalesced
.align 3
l_objc_msgSend_fixup_alloc:
.quad _objc_msgSend_fixup
.quad L_OBJC_METH_VAR_NAME_1
This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107205 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/MC')
-rw-r--r-- | lib/MC/MCAsmInfo.cpp | 1 | ||||
-rw-r--r-- | lib/MC/MCAsmInfoDarwin.cpp | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp index a275be2..79c09a9 100644 --- a/lib/MC/MCAsmInfo.cpp +++ b/lib/MC/MCAsmInfo.cpp @@ -31,6 +31,7 @@ MCAsmInfo::MCAsmInfo() { GlobalPrefix = ""; PrivateGlobalPrefix = "."; LinkerPrivateGlobalPrefix = ""; + LinkerWeakGlobalPrefix = ""; InlineAsmStart = "APP"; InlineAsmEnd = "NO_APP"; AssemblerDialect = 0; diff --git a/lib/MC/MCAsmInfoDarwin.cpp b/lib/MC/MCAsmInfoDarwin.cpp index 0bd3b2d..aef4b22 100644 --- a/lib/MC/MCAsmInfoDarwin.cpp +++ b/lib/MC/MCAsmInfoDarwin.cpp @@ -21,6 +21,7 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() { GlobalPrefix = "_"; PrivateGlobalPrefix = "L"; LinkerPrivateGlobalPrefix = "l"; + LinkerWeakGlobalPrefix = "l"; AllowQuotesInName = true; HasSingleParameterDotFile = false; HasSubsectionsViaSymbols = true; |