X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fexceptions.h;h=5711c1a35e1e81cbbefb3c3cbba84e99e650430f;hb=7fe8399de97e50f631ce28ceb42515862a927556;hp=b8dadc7b01f8d201ab8e4e82acbd017fd8390fd8;hpb=0000e5ccd8615d632ac6ddc831cd5d3af8084737;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/exceptions.h b/gdb/exceptions.h index b8dadc7b01..5711c1a35e 100644 --- a/gdb/exceptions.h +++ b/gdb/exceptions.h @@ -1,6 +1,6 @@ /* Exception (throw catch) mechanism, for GDB, the GNU debugger. - Copyright (C) 1986-2014 Free Software Foundation, Inc. + Copyright (C) 1986-2016 Free Software Foundation, Inc. This file is part of GDB. @@ -21,153 +21,6 @@ #define EXCEPTIONS_H #include "ui-out.h" -#include - -/* Reasons for calling throw_exceptions(). NOTE: all reason values - must be less than zero. enum value 0 is reserved for internal use - as the return value from an initial setjmp(). The function - catch_exceptions() reserves values >= 0 as legal results from its - wrapped function. */ - -enum return_reason - { - /* User interrupt. */ - RETURN_QUIT = -2, - /* Any other error. */ - RETURN_ERROR - }; - -#define RETURN_MASK(reason) (1 << (int)(-reason)) - -typedef enum -{ - RETURN_MASK_QUIT = RETURN_MASK (RETURN_QUIT), - RETURN_MASK_ERROR = RETURN_MASK (RETURN_ERROR), - RETURN_MASK_ALL = (RETURN_MASK_QUIT | RETURN_MASK_ERROR) -} return_mask; - -/* Describe all exceptions. */ - -enum errors { - GDB_NO_ERROR, - - /* Any generic error, the corresponding text is in - exception.message. */ - GENERIC_ERROR, - - /* Something requested was not found. */ - NOT_FOUND_ERROR, - - /* Thread library lacks support necessary for finding thread local - storage. */ - TLS_NO_LIBRARY_SUPPORT_ERROR, - - /* Load module not found while attempting to find thread local storage. */ - TLS_LOAD_MODULE_NOT_FOUND_ERROR, - - /* Thread local storage has not been allocated yet. */ - TLS_NOT_ALLOCATED_YET_ERROR, - - /* Something else went wrong while attempting to find thread local - storage. The ``struct gdb_exception'' message field provides - more detail. */ - TLS_GENERIC_ERROR, - - /* Problem parsing an XML document. */ - XML_PARSE_ERROR, - - /* Error accessing memory. */ - MEMORY_ERROR, - - /* Value not available. E.g., a register was not collected in a - traceframe. */ - NOT_AVAILABLE_ERROR, - - /* Value was optimized out. Note: if the value was a register, this - means the register was not saved in the frame. */ - OPTIMIZED_OUT_ERROR, - - /* DW_OP_GNU_entry_value resolving failed. */ - NO_ENTRY_VALUE_ERROR, - - /* Target throwing an error has been closed. Current command should be - aborted as the inferior state is no longer valid. */ - TARGET_CLOSE_ERROR, - - /* An undefined command was executed. */ - UNDEFINED_COMMAND_ERROR, - - /* Requested feature, method, mechanism, etc. is not supported. */ - NOT_SUPPORTED_ERROR, - - /* Add more errors here. */ - NR_ERRORS -}; - -struct gdb_exception -{ - enum return_reason reason; - enum errors error; - const char *message; -}; - -/* A pre-defined non-exception. */ -extern const struct gdb_exception exception_none; - -/* Wrap set/long jmp so that it's more portable (internal to - exceptions). */ - -#if defined(HAVE_SIGSETJMP) -#define EXCEPTIONS_SIGJMP_BUF sigjmp_buf -#define EXCEPTIONS_SIGSETJMP(buf) sigsetjmp((buf), 1) -#define EXCEPTIONS_SIGLONGJMP(buf,val) siglongjmp((buf), (val)) -#else -#define EXCEPTIONS_SIGJMP_BUF jmp_buf -#define EXCEPTIONS_SIGSETJMP(buf) setjmp(buf) -#define EXCEPTIONS_SIGLONGJMP(buf,val) longjmp((buf), (val)) -#endif - -/* Functions to drive the exceptions state m/c (internal to - exceptions). */ -EXCEPTIONS_SIGJMP_BUF *exceptions_state_mc_init (volatile struct - gdb_exception *exception, - return_mask mask); -int exceptions_state_mc_action_iter (void); -int exceptions_state_mc_action_iter_1 (void); - -/* Macro to wrap up standard try/catch behavior. - - The double loop lets us correctly handle code "break"ing out of the - try catch block. (It works as the "break" only exits the inner - "while" loop, the outer for loop detects this handling it - correctly.) Of course "return" and "goto" are not so lucky. - - For instance: - - *INDENT-OFF* - - volatile struct gdb_exception e; - TRY_CATCH (e, RETURN_MASK_ERROR) - { - } - switch (e.reason) - { - case RETURN_ERROR: ... - } - - */ - -#define TRY_CATCH(EXCEPTION,MASK) \ - { \ - EXCEPTIONS_SIGJMP_BUF *buf = \ - exceptions_state_mc_init (&(EXCEPTION), (MASK)); \ - EXCEPTIONS_SIGSETJMP (*buf); \ - } \ - while (exceptions_state_mc_action_iter ()) \ - while (exceptions_state_mc_action_iter_1 ()) - -/* *INDENT-ON* */ - /* If E is an exception, print it's error message on the specified stream. For _fprintf, prefix the message with PREFIX... */ @@ -176,26 +29,6 @@ extern void exception_fprintf (struct ui_file *file, struct gdb_exception e, const char *prefix, ...) ATTRIBUTE_PRINTF (3, 4); -/* Throw an exception (as described by "struct gdb_exception"). Will - execute a LONG JUMP to the inner most containing exception handler - established using catch_exceptions() (or similar). - - Code normally throws an exception using error() et.al. For various - reaons, GDB also contains code that throws an exception directly. - For instance, the remote*.c targets contain CNTRL-C signal handlers - that propogate the QUIT event up the exception chain. ``This could - be a good thing or a dangerous thing.'' -- the Existential - Wombat. */ - -extern void throw_exception (struct gdb_exception exception) - ATTRIBUTE_NORETURN; -extern void throw_verror (enum errors, const char *fmt, va_list ap) - ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 0); -extern void throw_vfatal (const char *fmt, va_list ap) - ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 0); -extern void throw_error (enum errors error, const char *fmt, ...) - ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (2, 3); - /* Call FUNC(UIOUT, FUNC_ARGS) but wrapped within an exception handler. If an exception (enum return_reason) is thrown using throw_exception() than all cleanups installed since @@ -255,17 +88,4 @@ extern int catch_exceptions_with_msg (struct ui_out *uiout, typedef int (catch_errors_ftype) (void *); extern int catch_errors (catch_errors_ftype *, void *, char *, return_mask); -/* Template to catch_errors() that wraps calls to command - functions. */ - -typedef void (catch_command_errors_ftype) (char *, int); -extern int catch_command_errors (catch_command_errors_ftype *func, - char *arg, int from_tty, return_mask); - -/* Like catch_command_errors, but works with const command and args. */ - -typedef void (catch_command_errors_const_ftype) (const char *, int); -extern int catch_command_errors_const (catch_command_errors_const_ftype *func, - const char *arg, int from_tty, return_mask); - #endif