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| author | Stephen Chen <tracelog@fb.com> | 2017-08-07 09:32:27 -0700 |
|---|---|---|
| committer | Dave Watson <davejwatson@fb.com> | 2017-08-07 09:33:23 -0700 |
| commit | 0314ff8522a6c991db26d5fb935e270d260e6dc0 (patch) | |
| tree | aa4a02912f7ee21c7d7a837705d04ed518996546 /configure.ac | |
| parent | cc0c170f535deadb48e285326a42d3fafabf411d (diff) | |
| download | libunwind-0314ff8522a6c991db26d5fb935e270d260e6dc0.tar.gz | |
aarch64: Use PTRACE_GETREGSET if available
In remote ptrace mode, we currently use PTRACE_PEEKUSER to read the registers.
PTRACE_PEEKUSER only works on x86 or arm 32 bit compatibility mode on linux. On aarch64 system,
it always return -EIO. https://github.com/torvalds/linux/blob/master/kernel/ptrace.c#L885-L1102
PTRACE_GETREGSET is the newer and more supported way of reading registers. Use that if it's available.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index e11ba8bf..d4007535 100644 --- a/configure.ac +++ b/configure.ac @@ -56,7 +56,7 @@ AC_CHECK_TYPES([struct elf_prstatus, struct prstatus], [], [], #endif ]) -AC_CHECK_DECLS([PTRACE_POKEUSER, PTRACE_POKEDATA, +AC_CHECK_DECLS([PTRACE_POKEUSER, PTRACE_POKEDATA, PTRACE_SETREGSET, PTRACE_TRACEME, PTRACE_CONT, PTRACE_SINGLESTEP, PTRACE_SYSCALL, PT_IO, PT_GETREGS, PT_GETFPREGS, PT_CONTINUE, PT_TRACE_ME, |