6042ba010a
GCC-13 introduced the nullptr constant. Use it when compiling with the C23 standard. Change-Id: I07db866bebfd25f1a60d18a3228ada2957500234 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83459 Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de> Reviewed-by: Julius Werner <jwerner@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
|
|
#ifndef STDDEF_H
|
|
#define STDDEF_H
|
|
|
|
#include <commonlib/helpers.h>
|
|
|
|
typedef __PTRDIFF_TYPE__ ptrdiff_t;
|
|
typedef __SIZE_TYPE__ size_t;
|
|
#define SIZE_MAX __SIZE_MAX__
|
|
/* There is a GCC macro for a size_t type, but not
|
|
* for a ssize_t type. Below construct tricks GCC
|
|
* into making __SIZE_TYPE__ signed.
|
|
*/
|
|
#define unsigned signed
|
|
typedef __SIZE_TYPE__ ssize_t;
|
|
#undef unsigned
|
|
|
|
typedef __WCHAR_TYPE__ wchar_t;
|
|
typedef __WINT_TYPE__ wint_t;
|
|
|
|
#if __STDC_VERSION__ >= 202300L
|
|
#define NULL nullptr
|
|
#else
|
|
#define nullptr ((void *)0)
|
|
#define NULL ((void *)0)
|
|
#endif
|
|
|
|
/* The devicetree data structures are only mutable in ramstage. All other
|
|
stages have a constant devicetree. */
|
|
#if !ENV_PAYLOAD_LOADER
|
|
#define DEVTREE_EARLY 1
|
|
#else
|
|
#define DEVTREE_EARLY 0
|
|
#endif
|
|
|
|
#if DEVTREE_EARLY
|
|
#define DEVTREE_CONST const
|
|
#else
|
|
#define DEVTREE_CONST
|
|
#endif
|
|
|
|
/* Provide a pointer to address 0 that thwarts any "accessing this is
|
|
* undefined behaviour and do whatever" trickery in compilers.
|
|
* Use when you _really_ need to read32(zeroptr) (ie. read address 0).
|
|
*/
|
|
extern char zeroptr[];
|
|
|
|
#endif /* STDDEF_H */
|