111 lines
4.5 KiB
C
111 lines
4.5 KiB
C
/* This file contains a number of internal prototype declarations that
|
|
don't fit anywhere else. */
|
|
|
|
#ifndef _LIBC_INTERNAL
|
|
# define _LIBC_INTERNAL 1
|
|
|
|
#include <hp-timing.h>
|
|
|
|
/* Initialize the `__libc_enable_secure' flag. */
|
|
extern void __libc_init_secure (void);
|
|
|
|
/* This function will be called from _init in init-first.c. */
|
|
extern void __libc_global_ctors (void);
|
|
|
|
/* Discover the tick frequency of the machine if something goes wrong,
|
|
we return 0, an impossible hertz. */
|
|
extern int __profile_frequency (void);
|
|
libc_hidden_proto (__profile_frequency)
|
|
|
|
/* Hooks for the instrumenting functions. */
|
|
extern void __cyg_profile_func_enter (void *this_fn, void *call_site);
|
|
extern void __cyg_profile_func_exit (void *this_fn, void *call_site);
|
|
|
|
/* Get frequency of the system processor. */
|
|
extern hp_timing_t __get_clockfreq (void);
|
|
|
|
/* Free all allocated resources. */
|
|
extern void __libc_freeres (void);
|
|
libc_hidden_proto (__libc_freeres)
|
|
|
|
/* Free resources stored in thread-local variables on thread exit. */
|
|
extern void __libc_thread_freeres (void);
|
|
|
|
/* Define and initialize `__progname' et. al. */
|
|
extern void __init_misc (int, char **, char **);
|
|
|
|
/* 1 if 'type' is a pointer type, 0 otherwise. */
|
|
# define __pointer_type(type) (__builtin_classify_type ((type) 0) == 5)
|
|
|
|
/* __intptr_t if P is true, or T if P is false. */
|
|
# define __integer_if_pointer_type_sub(T, P) \
|
|
__typeof__ (*(0 ? (__typeof__ (0 ? (T *) 0 : (void *) (P))) 0 \
|
|
: (__typeof__ (0 ? (__intptr_t *) 0 : (void *) (!(P)))) 0))
|
|
|
|
/* __intptr_t if EXPR has a pointer type, or the type of EXPR otherwise. */
|
|
# define __integer_if_pointer_type(expr) \
|
|
__integer_if_pointer_type_sub(__typeof__ ((__typeof__ (expr)) 0), \
|
|
__pointer_type (__typeof__ (expr)))
|
|
|
|
/* Cast an integer or a pointer VAL to integer with proper type. */
|
|
# define cast_to_integer(val) ((__integer_if_pointer_type (val)) (val))
|
|
|
|
/* Align a value by rounding down to closest size.
|
|
e.g. Using size of 4096, we get this behavior:
|
|
{4095, 4096, 4097} = {0, 4096, 4096}. */
|
|
#define ALIGN_DOWN(base, size) ((base) & -((__typeof__ (base)) (size)))
|
|
|
|
/* Align a value by rounding up to closest size.
|
|
e.g. Using size of 4096, we get this behavior:
|
|
{4095, 4096, 4097} = {4096, 4096, 8192}.
|
|
|
|
Note: The size argument has side effects (expanded multiple times). */
|
|
#define ALIGN_UP(base, size) ALIGN_DOWN ((base) + (size) - 1, (size))
|
|
|
|
/* Same as ALIGN_DOWN(), but automatically casts when base is a pointer. */
|
|
#define PTR_ALIGN_DOWN(base, size) \
|
|
((__typeof__ (base)) ALIGN_DOWN ((uintptr_t) (base), (size)))
|
|
|
|
/* Same as ALIGN_UP(), but automatically casts when base is a pointer. */
|
|
#define PTR_ALIGN_UP(base, size) \
|
|
((__typeof__ (base)) ALIGN_UP ((uintptr_t) (base), (size)))
|
|
|
|
/* Ignore the value of an expression when a cast to void does not
|
|
suffice (in particular, for a call to a function declared with
|
|
attribute warn_unused_result). */
|
|
#define ignore_value(x) \
|
|
({ __typeof__ (x) __ignored_value = (x); (void) __ignored_value; })
|
|
|
|
/* The macros to control diagnostics are structured like this, rather
|
|
than a single macro that both pushes and pops diagnostic state and
|
|
takes the affected code as an argument, because the GCC pragmas
|
|
work by disabling the diagnostic for a range of source locations
|
|
and do not work when all the pragmas and the affected code are in a
|
|
single macro expansion. */
|
|
|
|
/* Push diagnostic state. */
|
|
#define DIAG_PUSH_NEEDS_COMMENT _Pragma ("GCC diagnostic push")
|
|
|
|
/* Pop diagnostic state. */
|
|
#define DIAG_POP_NEEDS_COMMENT _Pragma ("GCC diagnostic pop")
|
|
|
|
#define _DIAG_STR1(s) #s
|
|
#define _DIAG_STR(s) _DIAG_STR1(s)
|
|
|
|
/* Ignore the diagnostic OPTION. VERSION is the most recent GCC
|
|
version for which the diagnostic has been confirmed to appear in
|
|
the absence of the pragma (in the form MAJOR.MINOR for GCC 4.x,
|
|
just MAJOR for GCC 5 and later). Uses of this pragma should be
|
|
reviewed when the GCC version given is no longer supported for
|
|
building glibc; the version number should always be on the same
|
|
source line as the macro name, so such uses can be found with grep.
|
|
Uses should come with a comment giving more details of the
|
|
diagnostic, and an architecture on which it is seen if possibly
|
|
optimization-related and not in architecture-specific code. This
|
|
macro should only be used if the diagnostic seems hard to fix (for
|
|
example, optimization-related false positives). */
|
|
#define DIAG_IGNORE_NEEDS_COMMENT(version, option) \
|
|
_Pragma (_DIAG_STR (GCC diagnostic ignored option))
|
|
|
|
#endif /* _LIBC_INTERNAL */
|