272 lines
8.0 KiB
C
272 lines
8.0 KiB
C
/*
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* Copyright (c) 2008-2013 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _INCLUDE_COMPILER_H
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#define _INCLUDE_COMPILER_H
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#ifndef ASSEMBLY
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#if __GNUC__
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#define __ASM __asm__
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#define __INLINE inline
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#define __STATIC_INLINE static inline
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#define __USED __attribute__((__used__))
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#define __UNUSED __attribute__((__unused__))
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#define __PACKED __attribute__((packed))
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#define __ALIGNED(x) __attribute__((aligned(x)))
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#define __PRINTFLIKE(__fmt,__varargs) __attribute__((__format__ (__printf__, __fmt, __varargs)))
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#define __SCANFLIKE(__fmt,__varargs) __attribute__((__format__ (__scanf__, __fmt, __varargs)))
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#define __SECTION(x) __attribute((section(x)))
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#define __PURE __attribute((pure))
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#define __CONST __attribute((const))
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#define __NO_RETURN __attribute__((noreturn))
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#define __MALLOC __attribute__((malloc))
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#define __WEAK __attribute__((weak))
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#define __GNU_INLINE __attribute__((gnu_inline))
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#define __GET_CALLER(x) __builtin_return_address(0)
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#define __GET_FRAME(x) __builtin_frame_address(0)
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#define __NAKED __attribute__((naked))
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#define __ISCONSTANT(x) __builtin_constant_p(x)
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#define __NO_INLINE __attribute((noinline))
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#define __SRAM __NO_INLINE __SECTION(".sram.text")
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#define __CONSTRUCTOR __attribute__((constructor))
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#define __DESTRUCTOR __attribute__((destructor))
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#define __OPTIMIZE(x) __attribute__((optimize(x)))
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#define INCBIN(symname, sizename, filename, section) \
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__asm__ (".section " section "; .align 4; .globl "#symname); \
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__asm__ (""#symname ":\n.incbin \"" filename "\""); \
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__asm__ (".section " section "; .align 1;"); \
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__asm__ (""#symname "_end:"); \
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__asm__ (".section " section "; .align 4; .globl "#sizename); \
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__asm__ (""#sizename ": .long "#symname "_end - "#symname " - 1"); \
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extern unsigned char symname[]; \
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extern unsigned int sizename
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#define INCFILE(symname, sizename, filename) INCBIN(symname, sizename, filename, ".rodata")
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/* look for gcc 3.0 and above */
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 0)
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#define __ALWAYS_INLINE __attribute__((always_inline))
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#else
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#define __ALWAYS_INLINE
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#endif
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/* look for gcc 3.1 and above */
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#if !defined(__DEPRECATED) // seems to be built in in some versions of the compiler
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
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#define __DEPRECATED __attribute((deprecated))
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#else
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#define __DEPRECATED
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#endif
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#endif
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/* look for gcc 3.3 and above */
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
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/* the may_alias attribute was introduced in gcc 3.3; before that, there
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* was no way to specify aliasiang rules on a type-by-type basis */
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#define __MAY_ALIAS __attribute__((may_alias))
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/* nonnull was added in gcc 3.3 as well */
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#define __NONNULL(x) __attribute((nonnull x))
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#else
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#define __MAY_ALIAS
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#define __NONNULL(x)
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#endif
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/* look for gcc 3.4 and above */
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#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
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#define __WARN_UNUSED_RESULT __attribute((warn_unused_result))
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#else
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#define __WARN_UNUSED_RESULT
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#endif
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#if ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1) && !defined(__clang__))
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#define __EXTERNALLY_VISIBLE __attribute__((externally_visible))
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#else
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#define __EXTERNALLY_VISIBLE
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#endif
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#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) || defined(__clang__)
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#define __UNREACHABLE __builtin_unreachable()
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#else
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#define __UNREACHABLE
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#endif
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#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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#ifdef __cplusplus
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#define STATIC_ASSERT(e) static_assert(e, #e)
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#else
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#define STATIC_ASSERT(e) _Static_assert(e, #e)
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#endif
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#else
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#define STATIC_ASSERT(e) extern char (*ct_assert(void)) [sizeof(char[1 - 2*!(e)])]
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#endif
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/* compiler fence */
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#define CF do { __asm__ volatile("" ::: "memory"); } while(0)
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#define __WEAK_ALIAS(x) __attribute__((weak, alias(x)))
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#define __ALIAS(x) __attribute__((alias(x)))
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#define __LOCAL __attribute__ ((visibility("hidden")))
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#define __THREAD __thread
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#define __NOP __asm__ volatile("nop")
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#define __BKPT __asm ("BKPT #0\n\t")
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#define __ARM __attribute__((target("arm")))
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#elif __ICCARM__
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#include <intrinsics.h>
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#include <lnk_sym.h>
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#ifdef __aarch64__
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static inline int __RBIT(int x) {
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int ret;
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asm("rbit %w0, %w1" :"=r"(ret) :"r"(x));
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return ret;
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}
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static inline int __CLZ(int x) {
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int ret;
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asm("clz %w0, %w1" :"=r"(ret) :"r"(x));
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return ret;
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}
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#endif
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static inline int _bin_fls(int x) {
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int i = __CLZ(x);
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return 32 - i;
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}
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static inline int _bin_ffs(int x) {
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unsigned long __t = (x);
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return _bin_fls(__t & -__t);
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}
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static inline int _bin_ctz(int x) {
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x = __RBIT(x);
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return __CLZ(x);
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}
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#define likely(x) (x)
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#define unlikely(x) (x)
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#define __ASM asm
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#define __INLINE inline
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#define __STATIC_INLINE static inline
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#define __USED __root
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#define __UNUSED __attribute__((__unused__))
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#define __PACKED __attribute__((packed))
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#define __ALIGNED(x) __attribute__((aligned(x)))
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#define __SECTION(x) __attribute__((section(x)))
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#define __NO_RETURN __attribute__((__noreturn__))
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#define __ALWAYS_INLINE __attribute__((always_inline))
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#define __NO_INLINE __attribute__((noinline))
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#define __SRAM __NO_INLINE __SECTION(".sram.text")
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#define __CONSTRUCTOR __attribute__((constructor))
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#define __DEPRECATED __attribute__((deprecated))
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#define __offsetof(type, field) offsetof(type, field)
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#define __PRINTFLIKE(__fmt,__varargs)
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#define __SCANFLIKE(__fmt,__varargs)
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#define __GET_CALLER(x) ((void *)__FILE__)
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#define __CONST
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#define __PURE
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#define __MALLOC
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#define __NONNULL(x)
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#define __EXTERNALLY_VISIBLE
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#define __UNREACHABLE
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#define __builtin_clz __CLZ
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#define __builtin_ffs(x) _bin_ffs(x)
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#define __builtin_ffsl(x) _bin_ffs(x)
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#define __builtin_ctz(x) _bin_ctz(x)
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#define __builtin_clzll __CLZ
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#define STATIC_ASSERT(e) _Static_assert(e, #e)
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#define CF do { asm volatile("" ::: "memory"); } while(0)
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#define __NOP asm("nop")
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#define __BKPT __asm ("BKPT #0\n\t")
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#define __ARM __arm
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#else
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#define likely(x) (x)
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#define unlikely(x) (x)
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#define __ASM
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#define __INLINE
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#define __STATIC_INLINE
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#define __USED
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#define __UNUSED
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#define __PACKED
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#define __ALIGNED(x)
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#define __PRINTFLIKE(__fmt,__varargs)
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#define __SCANFLIKE(__fmt,__varargs)
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#define __SECTION(x)
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#define __PURE
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#define __CONST
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#define __NONNULL(x)
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#define __DEPRECATED
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#define __WARN_UNUSED_RESULT
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#define __ALWAYS_INLINE
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#define __MAY_ALIAS
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#define __NO_RETURN
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#endif
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#else
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#if __GNUC__
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#define FUNCTION(x) .global x; .type x,STT_FUNC; x:
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#define DATA(x) .global x; .type x,STT_OBJECT; x:
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#define LOCAL_FUNCTION(x) .type x,STT_FUNC; x:
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#define LOCAL_DATA(x) .type x,STT_OBJECT; x:
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#endif
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#endif
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/* TODO: add type check */
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#define countof(a) (sizeof(a) / sizeof((a)[0]))
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/* CPP header guards */
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#ifdef __cplusplus
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#define __BEGIN_CDECLS extern "C" {
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#define __END_CDECLS }
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#else
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#define __BEGIN_CDECLS
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#define __END_CDECLS
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#endif
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#endif
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