forked from OSchip/llvm-project
d4eca120ac
Summary: This packet is necessary to make lldb work with the remote-gdb stub in user mode qemu when running position-independent binaries. It reports the relative position (load bias) of the loaded executable wrt. the addresses in the file itself. Lldb needs to know this information in order to correctly set the load address of the executable. Normally, lldb would be able to find this out on its own by following the breadcrumbs in the process auxiliary vector, but we can't do this here because qemu does not support the qXfer:auxv:read packet. This patch does not implement full scope of the qOffsets packet (it only supports packets with identical code, data and bss offsets), because it is not fully clear how should the different offsets be handled and I am not aware of a producer which would make use of this feature (qemu will always <https://github.com/qemu/qemu/blob/master/linux-user/elfload.c#L2436> return the same value for code and data offsets). In fact, even gdb ignores the offset for the bss sections, and uses the "data" offset instead. So, until the we need more of this packet, I think it's best to stick to the simplest solution possible. This patch simply rejects replies with non-uniform offsets. Reviewers: clayborg, jasonmolenda Subscribers: lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D74598 |
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| Breakpoint | ||
| Core | ||
| DataFormatter | ||
| Disassembler | ||
| Editline | ||
| Expression | ||
| Host | ||
| Interpreter | ||
| Language | ||
| ObjectFile | ||
| Platform | ||
| Process | ||
| ScriptInterpreter | ||
| Signals | ||
| Symbol | ||
| SymbolFile | ||
| Target | ||
| TestingSupport | ||
| UnwindAssembly | ||
| Utility | ||
| debugserver | ||
| tools | ||
| CMakeLists.txt | ||
| gtest_common.h | ||