diff options
Diffstat (limited to 'gdb/nat')
| -rw-r--r-- | gdb/nat/windows-nat.c | 15 | ||||
| -rw-r--r-- | gdb/nat/windows-nat.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gdb/nat/windows-nat.c b/gdb/nat/windows-nat.c index be6db97..2cbbc0f 100644 --- a/gdb/nat/windows-nat.c +++ b/gdb/nat/windows-nat.c @@ -41,6 +41,7 @@ std::vector<pending_stop> pending_stops; EXCEPTION_RECORD siginfo_er; #ifdef __x86_64__ +bool wow64_process = false; bool ignore_first_breakpoint = false; #endif @@ -240,6 +241,20 @@ handle_exception (struct target_waitstatus *ourstatus, bool debug_exceptions) ourstatus->kind = TARGET_WAITKIND_SPURIOUS; ignore_first_breakpoint = false; } + else if (wow64_process) + { + /* This breakpoint exception is triggered for WOW64 processes when + reaching an int3 instruction in 64bit code. + gdb checks for int3 in case of SIGTRAP, this fails because + Wow64GetThreadContext can only report the pc of 32bit code, and + gdb lets the target process continue. + So handle it as SIGINT instead, then the target is stopped + unconditionally. */ + DEBUG_EXCEPTION_SIMPLE ("EXCEPTION_BREAKPOINT"); + rec->ExceptionCode = DBG_CONTROL_C; + ourstatus->value.sig = GDB_SIGNAL_INT; + break; + } #endif /* FALLTHROUGH */ case STATUS_WX86_BREAKPOINT: diff --git a/gdb/nat/windows-nat.h b/gdb/nat/windows-nat.h index f742db2..9bfcb16 100644 --- a/gdb/nat/windows-nat.h +++ b/gdb/nat/windows-nat.h @@ -215,6 +215,8 @@ extern std::vector<pending_stop> pending_stops; extern EXCEPTION_RECORD siginfo_er; #ifdef __x86_64__ +/* The target is a WOW64 process */ +extern bool wow64_process; /* Ignore first breakpoint exception of WOW64 process */ extern bool ignore_first_breakpoint; #endif |