+++ /dev/null
-#ifndef _TOOLS_LINUX_COMPILER_H_
-#define _TOOLS_LINUX_COMPILER_H_
-
-/* Optimization barrier */
-/* The "volatile" is due to gcc bugs */
-#define barrier() __asm__ __volatile__("": : :"memory")
-#define barrier_data(ptr) __asm__ __volatile__("": :"r"(ptr) :"memory")
-
-#ifndef __always_inline
-# define __always_inline inline __attribute__((always_inline))
-#endif
-
-#ifndef __attribute_const__
-#define __attribute_const__ __attribute__((__const__))
-#endif
-
-#ifdef __ANDROID__
-/*
- * FIXME: Big hammer to get rid of tons of:
- * "warning: always_inline function might not be inlinable"
- *
- * At least on android-ndk-r12/platforms/android-24/arch-arm
- */
-#undef __always_inline
-#define __always_inline inline
-#endif
-
-#define noinline
-#define noinline_for_stack noinline
-
-#define __user
-#define __kernel
-
-#define __pure __attribute__((pure))
-#define __aligned(x) __attribute__((aligned(x)))
-#define __printf(a, b) __attribute__((format(printf, a, b)))
-#define __used __attribute__((__used__))
-#define __maybe_unused __attribute__((unused))
-#define __always_unused __attribute__((unused))
-#define __packed __attribute__((__packed__))
-#define __flatten __attribute__((flatten))
-#define __force
-#define __nocast
-#define __iomem
-#define __chk_user_ptr(x) (void)0
-#define __chk_io_ptr(x) (void)0
-#define __builtin_warning(x, y...) (1)
-#define __must_hold(x)
-#define __acquires(x)
-#define __cond_acquires(x)
-#define __releases(x)
-#define __acquire(x) (void)0
-#define __release(x) (void)0
-#define __cond_lock(x,c) (c)
-#define __percpu
-#define __rcu
-#define __sched
-#define __init
-#define __exit
-#define __private
-#define __must_check
-#define __malloc
-#define __weak __attribute__((weak))
-#define likely(x) __builtin_expect(!!(x), 1)
-#define unlikely(x) __builtin_expect(!!(x), 0)
-#define unreachable() __builtin_unreachable()
-#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
-#define fallthrough __attribute__((__fallthrough__))
-#define __noreturn __attribute__((__noreturn__))
-
-#ifndef __counted_by
-#define __counted_by(nr)
-#endif
-
-#define ___PASTE(a,b) a##b
-#define __PASTE(a,b) ___PASTE(a,b)
-#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__)
-
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
-
-#define __initcall(x) /* unimplemented */
-#define __exitcall(x) /* unimplemented */
-
-#include <linux/types.h>
-
-/*
- * Following functions are taken from kernel sources and
- * break aliasing rules in their original form.
- *
- * While kernel is compiled with -fno-strict-aliasing,
- * perf uses -Wstrict-aliasing=3 which makes build fail
- * under gcc 4.4.
- *
- * Using extra __may_alias__ type to allow aliasing
- * in this case.
- */
-typedef __u8 __attribute__((__may_alias__)) __u8_alias_t;
-typedef __u16 __attribute__((__may_alias__)) __u16_alias_t;
-typedef __u32 __attribute__((__may_alias__)) __u32_alias_t;
-typedef __u64 __attribute__((__may_alias__)) __u64_alias_t;
-
-static __always_inline void __read_once_size(const volatile void *p, void *res, int size)
-{
- switch (size) {
- case 1: *(__u8_alias_t *) res = *(volatile __u8_alias_t *) p; break;
- case 2: *(__u16_alias_t *) res = *(volatile __u16_alias_t *) p; break;
- case 4: *(__u32_alias_t *) res = *(volatile __u32_alias_t *) p; break;
- case 8: *(__u64_alias_t *) res = *(volatile __u64_alias_t *) p; break;
- default:
- barrier();
- __builtin_memcpy((void *)res, (const void *)p, size);
- barrier();
- }
-}
-
-static __always_inline void __write_once_size(volatile void *p, void *res, int size)
-{
- switch (size) {
- case 1: *(volatile __u8_alias_t *) p = *(__u8_alias_t *) res; break;
- case 2: *(volatile __u16_alias_t *) p = *(__u16_alias_t *) res; break;
- case 4: *(volatile __u32_alias_t *) p = *(__u32_alias_t *) res; break;
- case 8: *(volatile __u64_alias_t *) p = *(__u64_alias_t *) res; break;
- default:
- barrier();
- __builtin_memcpy((void *)p, (const void *)res, size);
- barrier();
- }
-}
-
-/*
- * Prevent the compiler from merging or refetching reads or writes. The
- * compiler is also forbidden from reordering successive instances of
- * READ_ONCE, WRITE_ONCE and ACCESS_ONCE (see below), but only when the
- * compiler is aware of some particular ordering. One way to make the
- * compiler aware of ordering is to put the two invocations of READ_ONCE,
- * WRITE_ONCE or ACCESS_ONCE() in different C statements.
- *
- * In contrast to ACCESS_ONCE these two macros will also work on aggregate
- * data types like structs or unions. If the size of the accessed data
- * type exceeds the word size of the machine (e.g., 32 bits or 64 bits)
- * READ_ONCE() and WRITE_ONCE() will fall back to memcpy and print a
- * compile-time warning.
- *
- * Their two major use cases are: (1) Mediating communication between
- * process-level code and irq/NMI handlers, all running on the same CPU,
- * and (2) Ensuring that the compiler does not fold, spindle, or otherwise
- * mutilate accesses that either do not require ordering or that interact
- * with an explicit memory barrier or atomic instruction that provides the
- * required ordering.
- */
-
-#define READ_ONCE(x) \
- ({ union { typeof(x) __val; char __c[1]; } __u; __read_once_size(&(x), __u.__c, sizeof(x)); __u.__val; })
-
-#define WRITE_ONCE(x, val) \
- ({ union { typeof(x) __val; char __c[1]; } __u = { .__val = (val) }; __write_once_size(&(x), __u.__c, sizeof(x)); __u.__val; })
-
-#define lockless_dereference(p) \
-({ \
- typeof(p) _________p1 = READ_ONCE(p); \
- typeof(*(p)) *___typecheck_p __maybe_unused; \
- smp_read_barrier_depends(); /* Dependency order vs. p above. */ \
- (_________p1); \
-})
-
-#define flush_cache_all() do { } while (0)
-#define flush_cache_mm(mm) do { } while (0)
-#define flush_cache_dup_mm(mm) do { } while (0)
-#define flush_cache_range(vma, start, end) do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn) do { } while (0)
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
-#define flush_dcache_page(page) do { } while (0)
-#define flush_dcache_mmap_lock(mapping) do { } while (0)
-#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-#define flush_icache_range(start, end) do { } while (0)
-#define flush_icache_page(vma,pg) do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
-#define flush_cache_vmap(start, end) do { } while (0)
-#define flush_cache_vunmap(start, end) do { } while (0)
-
-#ifdef __x86_64
-#define CONFIG_X86_64 y
-#endif
-
-#define __is_constexpr(x) \
- (sizeof(int) == sizeof(*(8 ? ((void *)((long)(x) * 0l)) : (int *)8)))
-#define is_signed_type(type) (((type)(-1)) < (__force type)1)
-#define is_unsigned_type(type) (!is_signed_type(type))
-
-#endif /* _TOOLS_LINUX_COMPILER_H */
projects / bcachefs-tools-debian / blobdiff