mirror of https://github.com/bsnes-emu/bsnes.git
129 lines
4.6 KiB
C
129 lines
4.6 KiB
C
#if defined(LIBCO_C)
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/*[amd64, arm, ppc, x86]:
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by default, co_swap_function is marked as a text (code) section
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if not supported, uncomment the below line to use mprotect instead */
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/* #define LIBCO_MPROTECT */
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/*[amd64]:
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Win64 only: provides a substantial speed-up, but will thrash XMM regs
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do not use this unless you are certain your application won't use SSE */
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/* #define LIBCO_NO_SSE */
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#if !defined(thread_local) /* User can override thread_local for obscure compilers */
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#if !defined(LIBCO_MP) /* Running in single-threaded environment */
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#define thread_local
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#else /* Running in multi-threaded environment */
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#if defined(__STDC__) /* Compiling as C Language */
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#if defined(_MSC_VER) /* Don't rely on MSVC's C11 support */
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#define thread_local __declspec(thread)
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#elif __STDC_VERSION__ < 201112L /* If we are on C90/99 */
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#if defined(__clang__) || defined(__GNUC__) /* Clang and GCC */
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#define thread_local __thread
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#else /* Otherwise, we ignore the directive (unless user provides their own) */
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#define thread_local
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#endif
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#else /* C11 and newer define thread_local in threads.h */
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#include <threads.h>
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#endif
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#elif defined(__cplusplus) /* Compiling as C++ Language */
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#if __cplusplus < 201103L /* thread_local is a C++11 feature */
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#if defined(_MSC_VER)
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#define thread_local __declspec(thread)
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#elif defined(__clang__) || defined(__GNUC__)
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#define thread_local __thread
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#else /* Otherwise, we ignore the directive (unless user provides their own) */
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#define thread_local
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#endif
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#else /* In C++ >= 11, thread_local in a builtin keyword */
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/* Don't do anything */
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#endif
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#endif
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#endif
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#endif
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/* In alignas(a), 'a' should be a power of two that is at least the type's
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alignment and at most the implementation's alignment limit. This limit is
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2**13 on MSVC. To be portable to MSVC through at least version 10.0,
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'a' should be an integer constant, as MSVC does not support expressions
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such as 1 << 3.
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The following C11 requirements are NOT supported on MSVC:
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- If 'a' is zero, alignas has no effect.
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- alignas can be used multiple times; the strictest one wins.
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- alignas (TYPE) is equivalent to alignas (alignof (TYPE)).
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*/
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#if !defined(alignas)
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#if defined(__STDC__) /* C Language */
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#if defined(_MSC_VER) /* Don't rely on MSVC's C11 support */
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#define alignas(bytes) __declspec(align(bytes))
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#elif __STDC_VERSION__ >= 201112L /* C11 and above */
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#include <stdalign.h>
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#elif defined(__clang__) || defined(__GNUC__) /* C90/99 on Clang/GCC */
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#define alignas(bytes) __attribute__ ((aligned (bytes)))
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#else /* Otherwise, we ignore the directive (user should provide their own) */
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#define alignas(bytes)
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#endif
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#elif defined(__cplusplus) /* C++ Language */
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#if __cplusplus < 201103L
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#if defined(_MSC_VER)
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#define alignas(bytes) __declspec(align(bytes))
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#elif defined(__clang__) || defined(__GNUC__) /* C++98/03 on Clang/GCC */
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#define alignas(bytes) __attribute__ ((aligned (bytes)))
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#else /* Otherwise, we ignore the directive (unless user provides their own) */
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#define alignas(bytes)
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#endif
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#else /* C++ >= 11 has alignas keyword */
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/* Do nothing */
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#endif
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#endif /* = !defined(__STDC_VERSION__) && !defined(__cplusplus) */
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#endif
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#if !defined(LIBCO_ASSERT)
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#include <assert.h>
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#define LIBCO_ASSERT assert
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#endif
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#if defined (__OpenBSD__)
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#if !defined(LIBCO_MALLOC) || !defined(LIBCO_FREE)
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#include <unistd.h>
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#include <sys/mman.h>
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static void* malloc_obsd(size_t size) {
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long pagesize = sysconf(_SC_PAGESIZE);
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char* memory = (char*)mmap(NULL, size + pagesize, PROT_READ|PROT_WRITE, MAP_STACK|MAP_PRIVATE|MAP_ANON, -1, 0);
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if (memory == MAP_FAILED) return NULL;
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*(size_t*)memory = size + pagesize;
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memory += pagesize;
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return (void*)memory;
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}
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static void free_obsd(void *ptr) {
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char* memory = (char*)ptr - sysconf(_SC_PAGESIZE);
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munmap(memory, *(size_t*)memory);
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}
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#define LIBCO_MALLOC malloc_obsd
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#define LIBCO_FREE free_obsd
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#endif
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#endif
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#if !defined(LIBCO_MALLOC) || !defined(LIBCO_FREE)
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#include <stdlib.h>
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#define LIBCO_MALLOC malloc
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#define LIBCO_FREE free
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#endif
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#if defined(_MSC_VER)
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#define section(name) __declspec(allocate("." #name))
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#elif defined(__APPLE__)
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#define section(name) __attribute__((section("__TEXT,__" #name)))
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#else
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#define section(name) __attribute__((section("." #name "#")))
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#endif
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/* if defined(LIBCO_C) */
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#endif
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