diff options
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/nolibc/crt.h | 26 | ||||
| -rw-r--r-- | tools/include/nolibc/errno.h | 4 |
2 files changed, 30 insertions, 0 deletions
diff --git a/tools/include/nolibc/crt.h b/tools/include/nolibc/crt.h index d9262998dae9..5bb492555f13 100644 --- a/tools/include/nolibc/crt.h +++ b/tools/include/nolibc/crt.h @@ -17,6 +17,7 @@ const unsigned long *_auxv __attribute__((weak)); void _start(void); static void __stack_chk_init(void); static void exit(int); +static char *strrchr(const char *s, int c); extern void (*const __preinit_array_start[])(int, char **, char**) __attribute__((weak)); extern void (*const __preinit_array_end[])(int, char **, char**) __attribute__((weak)); @@ -27,6 +28,24 @@ extern void (*const __init_array_end[])(int, char **, char**) __attribute__((wea extern void (*const __fini_array_start[])(void) __attribute__((weak)); extern void (*const __fini_array_end[])(void) __attribute__((weak)); +#ifndef NOLIBC_IGNORE_ERRNO +extern char *program_invocation_name __attribute__((weak)); +extern char *program_invocation_short_name __attribute__((weak)); + +static __inline__ +char *__nolibc_program_invocation_short_name(char *long_name) +{ + + char *short_name; + + short_name = strrchr(long_name, '/'); + if (!short_name || !short_name[0]) + return long_name; + + return short_name + 1; +} +#endif /* NOLIBC_IGNORE_ERRNO */ + void _start_c(long *sp); __attribute__((weak,used)) #if __nolibc_has_feature(undefined_behavior_sanitizer) @@ -76,6 +95,13 @@ void _start_c(long *sp) ; _auxv = auxv; +#ifndef NOLIBC_IGNORE_ERRNO + if (argc > 0 && argv[0]) { + program_invocation_name = argv[0]; + program_invocation_short_name = __nolibc_program_invocation_short_name(argv[0]); + } +#endif /* NOLIBC_IGNORE_ERRNO */ + for (ctor_func = __preinit_array_start; ctor_func < __preinit_array_end; ctor_func++) (*ctor_func)(argc, argv, envp); for (ctor_func = __init_array_start; ctor_func < __init_array_end; ctor_func++) diff --git a/tools/include/nolibc/errno.h b/tools/include/nolibc/errno.h index 08a33c40ec0c..bab83692ea1c 100644 --- a/tools/include/nolibc/errno.h +++ b/tools/include/nolibc/errno.h @@ -15,8 +15,12 @@ #ifndef NOLIBC_IGNORE_ERRNO #define SET_ERRNO(v) do { errno = (v); } while (0) int errno __attribute__((weak)); +char *program_invocation_name __attribute__((weak)) = ""; +char *program_invocation_short_name __attribute__((weak)) = ""; #else #define SET_ERRNO(v) do { } while (0) +#define program_invocation_name "" +#define program_invocation_short_name "" #endif |