diff options
Diffstat (limited to 'gdb/infcall.c')
| -rw-r--r-- | gdb/infcall.c | 47 |
1 files changed, 15 insertions, 32 deletions
diff --git a/gdb/infcall.c b/gdb/infcall.c index ba3111f..9af56ba 100644 --- a/gdb/infcall.c +++ b/gdb/infcall.c @@ -629,6 +629,17 @@ call_function_by_hand (struct value *function, int nargs, struct value **args) args, nargs, target_values_type, &real_pc, &bp_addr, get_current_regcache ()); break; + case AT_ENTRY_POINT: + { + CORE_ADDR dummy_addr; + + real_pc = funaddr; + dummy_addr = entry_point_address (); + /* A call dummy always consists of just a single breakpoint, so + its address is the same as the address of the dummy. */ + bp_addr = dummy_addr; + break; + } case AT_SYMBOL: /* Some executables define a symbol __CALL_DUMMY_ADDRESS whose address is the location where the breakpoint should be @@ -648,39 +659,11 @@ call_function_by_hand (struct value *function, int nargs, struct value **args) dummy_addr = gdbarch_convert_from_func_ptr_addr (gdbarch, dummy_addr, ¤t_target); - /* A call dummy always consists of just a single breakpoint, - so its address is the same as the address of the dummy. */ - bp_addr = dummy_addr; - break; } - } - /* FALLTHROUGH */ - case AT_ENTRY_POINT: - { - CORE_ADDR dummy_addr; - int bp_len; - - real_pc = funaddr; - dummy_addr = entry_point_address (); - - /* If the inferior call throws an uncaught C++ exception, - the inferior unwinder tries to unwind all frames, including - our dummy frame. The unwinder determines the address of - the calling instruction by subtracting 1 to the return - address. So, using the entry point's address as the return - address would lead the unwinder to use the unwinding - information of the code immediately preceding the entry - point. This information, if found, is invalid for the dummy - frame, and can potentially crash the inferior's unwinder. - Therefore, we adjust the return address by the length of - a breakpoint, guaranteeing that the unwinder finds the - correct function as the caller. */ - - gdbarch_breakpoint_from_pc (gdbarch, &dummy_addr, &bp_len); - dummy_addr += bp_len; - - /* A call dummy always consists of just a single breakpoint, so - its address is the same as the address of the dummy. */ + else + dummy_addr = entry_point_address (); + /* A call dummy always consists of just a single breakpoint, + so it's address is the same as the address of the dummy. */ bp_addr = dummy_addr; break; } |