aniani/nasm
0
0
Fork 1
mirror of https://github.com/netwide-assembler/nasm.git synced 2025-07-24 10:25:42 -04:00
Code

nasmlib: Add generic panic() macro, and no-return nasm_panic()

Browse Source 
Add a generic panic() macro which we can simply insert where an
internal error happens.  Also, create a nasm_panic() function
the only purpose of which is to let the compiler know that we will
never return after a panic.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2016-02-02 16:01:43 -08:00
parent 5a8c424d0c
commit f0d92fd19a
3 changed files with 23 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
compiler.h
View File

@ -188,4 +188,13 @@ char *strsep(char **, const char *);
# define no_return void # define no_return void
#endif #endif
/*
* How to tell the compiler that a function takes a printf-like string
*/
#ifdef __GNUC__
# define printf_func(fmt, list) __attribute__((format(printf, fmt, list)))
#else
# define printf_func(fmt, list)
#endif
#endif /* NASM_COMPILER_H */ #endif /* NASM_COMPILER_H */

11
nasmlib.c
View File

@ -1,6 +1,6 @@
/* ----------------------------------------------------------------------- * /* ----------------------------------------------------------------------- *
* *
* Copyright 1996-2014 The NASM Authors - All Rights Reserved * Copyright 1996-2016 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for * See the file AUTHORS included with the NASM distribution for
* the specific copyright holders. * the specific copyright holders.
* *
@ -83,6 +83,15 @@ void nasm_error(int severity, const char *fmt, ...)
va_end(ap); va_end(ap);
} }
no_return nasm_panic(int flags, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
nasm_verror(flags | ERR_PANIC, fmt, ap);
abort(); /* We should never get here */
}
void *nasm_malloc(size_t size) void *nasm_malloc(size_t size)
{ {
void *p = malloc(size); void *p = malloc(size);

10
nasmlib.h
View File

@ -1,6 +1,6 @@
/* ----------------------------------------------------------------------- * /* ----------------------------------------------------------------------- *
* *
* Copyright 1996-2009 The NASM Authors - All Rights Reserved * Copyright 1996-2016 The NASM Authors - All Rights Reserved
* See the file AUTHORS included with the NASM distribution for * See the file AUTHORS included with the NASM distribution for
* the specific copyright holders. * the specific copyright holders.
* *
@ -75,12 +75,10 @@ extern unsigned char nasm_tolower_tab[256];
*/ */
typedef void (*efunc) (int severity, const char *fmt, ...); typedef void (*efunc) (int severity, const char *fmt, ...);
typedef void (*vefunc) (int severity, const char *fmt, va_list ap); typedef void (*vefunc) (int severity, const char *fmt, va_list ap);
#ifdef __GNUC__ void printf_func(2, 3) nasm_error(int severity, const char *fmt, ...);
void nasm_error(int severity, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
#else
void nasm_error(int severity, const char *fmt, ...);
#endif
void nasm_set_verror(vefunc); void nasm_set_verror(vefunc);
no_return printf_func(2, 3) nasm_panic(int flags, const char *fmt, ...);
#define panic() nasm_panic(ERR_NOFILE, "Internal error at %s:%d\n", __FILE__, __LINE__);
/* /*
* These are the error severity codes which get passed as the first * These are the error severity codes which get passed as the first