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Decode ptrace-induced SIGTRAP si_code values. 

Example:

  signal 5 (SIGTRAP), code -32763 (PTRACE_EVENT_STOP), fault addr 0x274e00005fb3

I'm tempted to say that %d isn't the best choice for si_code, but as long as
we're fully decoding all the values, I don't think it matters.

Bug: http://b/62856172
Test: manual debuggerd run
Change-Id: Ieeca690828e1e12f4162bbadece53f4aa7b9537a
This commit is contained in:
Elliott Hughes 2017-06-21 08:39:41 -07:00
parent 199c27734f
commit 336a52e00c
1 changed files with 20 additions and 0 deletions
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20
debuggerd/libdebuggerd/tombstone.cpp
View File

@ -168,6 +168,26 @@ static const char* get_sigcode(int signo, int code) {
case TRAP_BRANCH: return "TRAP_BRANCH";
case TRAP_HWBKPT: return "TRAP_HWBKPT";
}
if ((code & 0xff) == SIGTRAP) {
switch ((code >> 8) & 0xff) {
case PTRACE_EVENT_FORK:
return "PTRACE_EVENT_FORK";
case PTRACE_EVENT_VFORK:
return "PTRACE_EVENT_VFORK";
case PTRACE_EVENT_CLONE:
return "PTRACE_EVENT_CLONE";
case PTRACE_EVENT_EXEC:
return "PTRACE_EVENT_EXEC";
case PTRACE_EVENT_VFORK_DONE:
return "PTRACE_EVENT_VFORK_DONE";
case PTRACE_EVENT_EXIT:
return "PTRACE_EVENT_EXIT";
case PTRACE_EVENT_SECCOMP:
return "PTRACE_EVENT_SECCOMP";
case PTRACE_EVENT_STOP:
return "PTRACE_EVENT_STOP";
}
}
static_assert(NSIGTRAP == TRAP_HWBKPT, "missing TRAP_* si_code");
break;
}