diff options
Diffstat (limited to 'gdb/common')
| -rw-r--r-- | gdb/common/common-exceptions.c | 10 | ||||
| -rw-r--r-- | gdb/common/common-exceptions.h | 39 |
2 files changed, 33 insertions, 16 deletions
diff --git a/gdb/common/common-exceptions.c b/gdb/common/common-exceptions.c index ce476a2..231bab5 100644 --- a/gdb/common/common-exceptions.c +++ b/gdb/common/common-exceptions.c @@ -22,7 +22,7 @@ const struct gdb_exception exception_none = { (enum return_reason) 0, GDB_NO_ERROR, NULL }; -#ifndef __cplusplus +#if GDB_XCPT == GDB_XCPT_SJMP /* Possible catcher states. */ enum catcher_state { @@ -213,7 +213,7 @@ exceptions_state_mc_action_iter_1 (void) return exceptions_state_mc (CATCH_ITER_1); } -#else /* !__cplusplus */ +#else /* !GDB_XCPT_SJMP */ /* How many nested TRY blocks we have. See exception_messages and throw_it. */ @@ -261,7 +261,7 @@ gdb_exception_sliced_copy (struct gdb_exception *to, const struct gdb_exception *to = *from; } -#endif /* !__cplusplus */ +#endif /* !GDB_XCPT_SJMP */ /* Return EXCEPTION to the nearest containing catch_errors(). */ @@ -272,7 +272,7 @@ throw_exception (struct gdb_exception exception) do_cleanups (all_cleanups ()); -#ifndef __cplusplus +#if GDB_XCPT == GDB_XCPT_SJMP /* Jump to the containing catch_errors() call, communicating REASON to that call via setjmp's return value. Note that REASON can't be zero, by definition in defs.h. */ @@ -320,7 +320,7 @@ throw_it (enum return_reason reason, enum errors error, const char *fmt, { struct gdb_exception e; char *new_message; -#ifndef __cplusplus +#if GDB_XCPT == GDB_XCPT_SJMP int depth = catcher_list_size (); #else int depth = try_scope_depth; diff --git a/gdb/common/common-exceptions.h b/gdb/common/common-exceptions.h index 51795b1..def08b1 100644 --- a/gdb/common/common-exceptions.h +++ b/gdb/common/common-exceptions.h @@ -116,12 +116,32 @@ struct gdb_exception const char *message; }; +/* The different exception mechanisms that TRY/CATCH can map to. */ + +/* Make GDB exceptions use setjmp/longjmp behind the scenes. This is + the only mode supported when GDB is built as a C program. */ +#define GDB_XCPT_SJMP 1 + +/* Make GDB exceptions use try/catch behind the scenes. Can't be made + the default until we stop throwing exceptions from signal + handlers. */ +#define GDB_XCPT_TRY 2 + +/* Specify this mode to build with TRY/CATCH mapped directly to raw + try/catch. GDB won't work correctly, but building that way catches + code tryin to break/continue out of the try block, along with + spurious code between the TRY and the CATCH block. */ +#define GDB_XCPT_RAW_TRY 3 + +/* Always use setjmp/longmp, even in C++ mode. */ +#define GDB_XCPT GDB_XCPT_SJMP + /* Functions to drive the exceptions state machine. Though declared here by necessity, these functions should be considered internal to the exceptions subsystem and not used other than via the TRY/CATCH macros defined below. */ -#ifndef __cplusplus +#if GDB_XCPT == GDB_XCPT_SJMP extern SIGJMP_BUF *exceptions_state_mc_init (void); extern int exceptions_state_mc_action_iter (void); extern int exceptions_state_mc_action_iter_1 (void); @@ -157,7 +177,7 @@ extern void exception_rethrow (void); */ -#ifndef __cplusplus +#if GDB_XCPT == GDB_XCPT_SJMP #define TRY \ { \ @@ -176,7 +196,9 @@ extern void exception_rethrow (void); #define END_CATCH \ } -#else +#endif /* GDB_XCPT_SJMP */ + +#if GDB_XCPT == GDB_XCPT_TRY || GDB_XCPT == GDB_XCPT_RAW_TRY /* Prevent error/quit during TRY from calling cleanups established prior to here. This pops out the scope in either case of normal @@ -195,13 +217,7 @@ struct exception_try_scope void *saved_state; }; -/* Define this to build with TRY/CATCH mapped directly to raw - try/catch. GDB won't work correctly, but building that way catches - code tryin to break/continue out of the try block, along with - spurious code between the TRY and the CATCH block. */ -//#define USE_RAW_CXX_TRY - -#ifndef USE_RAW_CXX_TRY +#if GDB_XCPT == GDB_XCPT_TRY /* We still need to wrap TRY/CATCH in C++ so that cleanups and C++ exceptions can coexist. The TRY blocked is wrapped in a @@ -224,6 +240,7 @@ struct exception_try_scope { \ exception_rethrow (); \ } + #else #define TRY try @@ -249,7 +266,7 @@ struct gdb_exception_RETURN_MASK_QUIT : public gdb_exception_RETURN_MASK_ALL { }; -#endif +#endif /* GDB_XCPT_TRY || GDB_XCPT_RAW_TRY */ /* *INDENT-ON* */ |