diff options
| author | 2015-04-17 21:14:10 +0100 | |
|---|---|---|
| committer | 2015-04-21 19:47:42 +0100 | |
| commit | 527c9c71f0c6e2f9943ac028e7c050500699a44b (patch) | |
| tree | 09e6794e5b184ce33ca468c972a8ef2faff7f174 /compiler/cfi_test.h | |
| parent | e7bee3b7d307508243f4a00b5cf8a8867fcaaff5 (diff) | |
Generate .eh_frame_hdr section and PT_GNU_EH_FRAME segment.
Fixes issue 20125400 - ART: Need .eh_frame_hdr and PT_GNU_EH_FRAME
for libunwind.
.eh_frame_hdr serves two purposes. Firstly, it can optionally contain
binary search table for fast eh_frame lookup. This is important for
C++ exception handling, but we do not need it so we omit it.
Secondly, it contains a relative .eh_frame pointer which makes it
easier for run-time code to locate the .eh_frame section.
libunwind seems to rely on this relative pointer.
Bug: 20125400
Change-Id: I7c1e3f68d914f70781404c508395831a3296a7da
Diffstat (limited to 'compiler/cfi_test.h')
| -rw-r--r-- | compiler/cfi_test.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/cfi_test.h b/compiler/cfi_test.h index cdb1b9e9a5..f7501d2dda 100644 --- a/compiler/cfi_test.h +++ b/compiler/cfi_test.h @@ -22,6 +22,7 @@ #include <sstream> #include "arch/instruction_set.h" +#include "dwarf/dwarf_constants.h" #include "dwarf/dwarf_test.h" #include "dwarf/headers.h" #include "disassembler/disassembler.h" @@ -45,7 +46,8 @@ class CFITest : public dwarf::DwarfTest { // Pretty-print CFI opcodes. constexpr bool is64bit = false; dwarf::DebugFrameOpCodeWriter<> initial_opcodes; - dwarf::WriteEhFrameCIE(is64bit, dwarf::Reg(8), initial_opcodes, &eh_frame_data_); + dwarf::WriteEhFrameCIE(is64bit, dwarf::DW_EH_PE_absptr, dwarf::Reg(8), + initial_opcodes, &eh_frame_data_); std::vector<uintptr_t> eh_frame_patches; dwarf::WriteEhFrameFDE(is64bit, 0, 0, actual_asm.size(), &actual_cfi, &eh_frame_data_, &eh_frame_patches); |