Cameron Gutman
2021-01-08 21:35:07 -06:00
parent af0921c5b2
commit 0d3092d62c
90 changed files with 824 additions and 140 deletions
+48 -7
View File
@@ -1,6 +1,6 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
@@ -30,6 +30,10 @@
#include "SDL_stdinc.h"
#ifdef _MSC_VER
#include <intrin.h>
#endif
/**
* \name The two types of endianness
*/
@@ -45,6 +49,9 @@
#elif defined(__OpenBSD__)
#include <endian.h>
#define SDL_BYTEORDER BYTE_ORDER
#elif defined(__FreeBSD__)
#include <sys/endian.h>
#define SDL_BYTEORDER BYTE_ORDER
#else
#if defined(__hppa__) || \
defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
@@ -68,8 +75,11 @@ extern "C" {
/**
* \file SDL_endian.h
*/
#if defined(__GNUC__) && defined(__i386__) && \
!(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
#if (defined(__clang__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 2))) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))
#define SDL_Swap16(x) __builtin_bswap16(x)
#elif defined(__GNUC__) && defined(__i386__) && \
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
@@ -92,13 +102,23 @@ SDL_Swap16(Uint16 x)
__asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
return (Uint16)result;
}
#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rev16 %w1, %w0" : "=r"(x) : "r"(x));
return x;
}
#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__))
SDL_FORCE_INLINE Uint16
SDL_Swap16(Uint16 x)
{
__asm__("rorw #8,%0": "=d"(x): "0"(x):"cc");
return x;
}
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_ushort)
#define SDL_Swap16(x) _byteswap_ushort(x)
#elif defined(__WATCOMC__) && defined(__386__)
extern _inline Uint16 SDL_Swap16(Uint16);
#pragma aux SDL_Swap16 = \
@@ -113,7 +133,11 @@ SDL_Swap16(Uint16 x)
}
#endif
#if defined(__GNUC__) && defined(__i386__)
#if (defined(__clang__) && (__clang_major__ > 2 || (__clang_major__ == 2 && __clang_minor__ >= 6))) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
#define SDL_Swap32(x) __builtin_bswap32(x)
#elif defined(__GNUC__) && defined(__i386__) && \
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
@@ -138,7 +162,14 @@ SDL_Swap32(Uint32 x)
__asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x));
return result;
}
#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
#elif defined(__GNUC__) && defined(__aarch64__)
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
__asm__("rev %w1, %w0": "=r"(x):"r"(x));
return x;
}
#elif defined(__GNUC__) && (defined(__m68k__) && !defined(__mcoldfire__))
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
{
@@ -160,6 +191,9 @@ extern _inline Uint32 SDL_Swap32(Uint32);
parm [eax] \
modify [eax];
#endif
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_ulong)
#define SDL_Swap32(x) _byteswap_ulong(x)
#else
SDL_FORCE_INLINE Uint32
SDL_Swap32(Uint32 x)
@@ -169,7 +203,11 @@ SDL_Swap32(Uint32 x)
}
#endif
#if defined(__GNUC__) && defined(__i386__)
#if (defined(__clang__) && (__clang_major__ > 2 || (__clang_major__ == 2 && __clang_minor__ >= 6))) || \
(defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
#define SDL_Swap64(x) __builtin_bswap64(x)
#elif defined(__GNUC__) && defined(__i386__) && \
!(__GNUC__ == 2 && __GNUC_MINOR__ <= 95 /* broken gcc version */)
SDL_FORCE_INLINE Uint64
SDL_Swap64(Uint64 x)
{
@@ -194,6 +232,9 @@ SDL_Swap64(Uint64 x)
__asm__("bswapq %0": "=r"(x):"0"(x));
return x;
}
#elif defined(_MSC_VER)
#pragma intrinsic(_byteswap_uint64)
#define SDL_Swap64(x) _byteswap_uint64(x)
#else
SDL_FORCE_INLINE Uint64
SDL_Swap64(Uint64 x)