From 00b88bbcaf19e75e8f6a500c9da47e92aec464a6 Mon Sep 17 00:00:00 2001 From: Hans Wennborg Date: Wed, 26 Sep 2018 12:57:45 +0000 Subject: Revert r343089 "[AArch64] - Return address signing dwarf support" This caused the DebugInfo/Sparc/gnu-window-save.ll test to fail. > Functions that have signed return addresses need additional dwarf support: > - After signing the LR, and before authenticating it, the LR register is in a > state the is unusable by a debugger or unwinder > - To account for this a new directive, .cfi_negate_ra_state, is added > - This directive says the signed state of the LR register has now changed, > i.e. unsigned -> signed or signed -> unsigned > - This directive has the same CFA code as the SPARC directive GNU_window_save > (0x2d), adding a macro to account for multiply defined codes > - This patch matches the gcc implementation of this support: > https://patchwork.ozlabs.org/patch/800271/ > > Differential Revision: https://reviews.llvm.org/D50136 llvm-svn: 343103 --- llvm/lib/BinaryFormat/Dwarf.cpp | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-) (limited to 'llvm/lib/BinaryFormat') diff --git a/llvm/lib/BinaryFormat/Dwarf.cpp b/llvm/lib/BinaryFormat/Dwarf.cpp index 46b95275395..5984de73ae6 100644 --- a/llvm/lib/BinaryFormat/Dwarf.cpp +++ b/llvm/lib/BinaryFormat/Dwarf.cpp @@ -13,7 +13,6 @@ #include "llvm/BinaryFormat/Dwarf.h" #include "llvm/ADT/StringSwitch.h" -#include "llvm/ADT/Triple.h" #include "llvm/Support/ErrorHandling.h" using namespace llvm; @@ -456,31 +455,14 @@ StringRef llvm::dwarf::RangeListEncodingString(unsigned Encoding) { } } -StringRef llvm::dwarf::CallFrameString(unsigned Encoding, - Triple::ArchType Arch) { -#define SELECT_AARCH64 (Arch == llvm::Triple::aarch64_be || Arch == llvm::Triple::aarch64) -#define SELECT_MIPS64 Arch == llvm::Triple::mips64 -#define SELECT_SPARC64 Arch == llvm::Triple::sparcv9 -#define SELECT_X86 (Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64) -#define HANDLE_DW_CFA(ID, NAME) -#define HANDLE_DW_CFA_PRED(ID, NAME, PRED) \ - if (ID == Encoding && PRED) \ - return "DW_CFA_" #NAME; -#include "llvm/BinaryFormat/Dwarf.def" - +StringRef llvm::dwarf::CallFrameString(unsigned Encoding) { switch (Encoding) { default: return StringRef(); -#define HANDLE_DW_CFA_PRED(ID, NAME, PRED) #define HANDLE_DW_CFA(ID, NAME) \ case DW_CFA_##NAME: \ return "DW_CFA_" #NAME; #include "llvm/BinaryFormat/Dwarf.def" - -#undef SELECT_X86 -#undef SELECT_SPARC64 -#undef SELECT_MIPS64 -#undef SELECT_AARCH64 } } -- cgit v1.2.3