mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
153 lines
4.7 KiB
153 lines
4.7 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef __LINUX_COMPILER_TYPES_H |
|
#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead." |
|
#endif |
|
|
|
/* |
|
* Common definitions for all gcc versions go here. |
|
*/ |
|
#define GCC_VERSION (__GNUC__ * 10000 \ |
|
+ __GNUC_MINOR__ * 100 \ |
|
+ __GNUC_PATCHLEVEL__) |
|
|
|
/* |
|
* This macro obfuscates arithmetic on a variable address so that gcc |
|
* shouldn't recognize the original var, and make assumptions about it. |
|
* |
|
* This is needed because the C standard makes it undefined to do |
|
* pointer arithmetic on "objects" outside their boundaries and the |
|
* gcc optimizers assume this is the case. In particular they |
|
* assume such arithmetic does not wrap. |
|
* |
|
* A miscompilation has been observed because of this on PPC. |
|
* To work around it we hide the relationship of the pointer and the object |
|
* using this macro. |
|
* |
|
* Versions of the ppc64 compiler before 4.1 had a bug where use of |
|
* RELOC_HIDE could trash r30. The bug can be worked around by changing |
|
* the inline assembly constraint from =g to =r, in this particular |
|
* case either is valid. |
|
*/ |
|
#define RELOC_HIDE(ptr, off) \ |
|
({ \ |
|
unsigned long __ptr; \ |
|
__asm__ ("" : "=r"(__ptr) : "0"(ptr)); \ |
|
(typeof(ptr)) (__ptr + (off)); \ |
|
}) |
|
|
|
#ifdef CONFIG_RETPOLINE |
|
#define __noretpoline __attribute__((__indirect_branch__("keep"))) |
|
#endif |
|
|
|
#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) |
|
|
|
#define __compiletime_object_size(obj) __builtin_object_size(obj, 0) |
|
|
|
#define __compiletime_warning(message) __attribute__((__warning__(message))) |
|
#define __compiletime_error(message) __attribute__((__error__(message))) |
|
|
|
#if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__) |
|
#define __latent_entropy __attribute__((latent_entropy)) |
|
#endif |
|
|
|
/* |
|
* calling noreturn functions, __builtin_unreachable() and __builtin_trap() |
|
* confuse the stack allocation in gcc, leading to overly large stack |
|
* frames, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365 |
|
* |
|
* Adding an empty inline assembly before it works around the problem |
|
*/ |
|
#define barrier_before_unreachable() asm volatile("") |
|
|
|
/* |
|
* Mark a position in code as unreachable. This can be used to |
|
* suppress control flow warnings after asm blocks that transfer |
|
* control elsewhere. |
|
*/ |
|
#define unreachable() \ |
|
do { \ |
|
annotate_unreachable(); \ |
|
barrier_before_unreachable(); \ |
|
__builtin_unreachable(); \ |
|
} while (0) |
|
|
|
#if defined(RANDSTRUCT_PLUGIN) && !defined(__CHECKER__) |
|
#define __randomize_layout __attribute__((randomize_layout)) |
|
#define __no_randomize_layout __attribute__((no_randomize_layout)) |
|
/* This anon struct can add padding, so only enable it under randstruct. */ |
|
#define randomized_struct_fields_start struct { |
|
#define randomized_struct_fields_end } __randomize_layout; |
|
#endif |
|
|
|
/* |
|
* GCC 'asm goto' miscompiles certain code sequences: |
|
* |
|
* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670 |
|
* |
|
* Work it around via a compiler barrier quirk suggested by Jakub Jelinek. |
|
* |
|
* (asm goto is automatically volatile - the naming reflects this.) |
|
*/ |
|
#define asm_volatile_goto(x...) do { asm goto(x); asm (""); } while (0) |
|
|
|
/* |
|
* sparse (__CHECKER__) pretends to be gcc, but can't do constant |
|
* folding in __builtin_bswap*() (yet), so don't set these for it. |
|
*/ |
|
#if defined(CONFIG_ARCH_USE_BUILTIN_BSWAP) && !defined(__CHECKER__) |
|
#define __HAVE_BUILTIN_BSWAP32__ |
|
#define __HAVE_BUILTIN_BSWAP64__ |
|
#define __HAVE_BUILTIN_BSWAP16__ |
|
#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */ |
|
|
|
#if GCC_VERSION >= 70000 |
|
#define KASAN_ABI_VERSION 5 |
|
#elif GCC_VERSION >= 50000 |
|
#define KASAN_ABI_VERSION 4 |
|
#elif GCC_VERSION >= 40902 |
|
#define KASAN_ABI_VERSION 3 |
|
#endif |
|
|
|
#if __has_attribute(__no_sanitize_address__) |
|
#define __no_sanitize_address __attribute__((no_sanitize_address)) |
|
#else |
|
#define __no_sanitize_address |
|
#endif |
|
|
|
#if defined(__SANITIZE_THREAD__) && __has_attribute(__no_sanitize_thread__) |
|
#define __no_sanitize_thread __attribute__((no_sanitize_thread)) |
|
#else |
|
#define __no_sanitize_thread |
|
#endif |
|
|
|
#if __has_attribute(__no_sanitize_undefined__) |
|
#define __no_sanitize_undefined __attribute__((no_sanitize_undefined)) |
|
#else |
|
#define __no_sanitize_undefined |
|
#endif |
|
|
|
#if GCC_VERSION >= 50100 |
|
#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1 |
|
#endif |
|
|
|
/* |
|
* Turn individual warnings and errors on and off locally, depending |
|
* on version. |
|
*/ |
|
#define __diag_GCC(version, severity, s) \ |
|
__diag_GCC_ ## version(__diag_GCC_ ## severity s) |
|
|
|
/* Severity used in pragma directives */ |
|
#define __diag_GCC_ignore ignored |
|
#define __diag_GCC_warn warning |
|
#define __diag_GCC_error error |
|
|
|
#define __diag_str1(s) #s |
|
#define __diag_str(s) __diag_str1(s) |
|
#define __diag(s) _Pragma(__diag_str(GCC diagnostic s)) |
|
|
|
#if GCC_VERSION >= 80000 |
|
#define __diag_GCC_8(s) __diag(s) |
|
#else |
|
#define __diag_GCC_8(s) |
|
#endif
|
|
|