mirror of
https://github.com/love2d/megasource.git
synced 2026-08-17 19:24:09 +02:00
Update SDL to 2.0.18
This commit is contained in:
Alex Szpakowski
+101
-47
@@ -1,6 +1,6 @@
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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@@ -30,6 +30,23 @@
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#include "SDL_stdinc.h"
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#if defined(_MSC_VER) && (_MSC_VER >= 1400)
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/* As of Clang 11, '_m_prefetchw' is conflicting with the winnt.h's version,
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so we define the needed '_m_prefetch' here as a pseudo-header, until the issue is fixed. */
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#ifdef __clang__
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#ifndef __PRFCHWINTRIN_H
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#define __PRFCHWINTRIN_H
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static __inline__ void __attribute__((__always_inline__, __nodebug__))
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_m_prefetch(void *__P)
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{
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__builtin_prefetch (__P, 0, 3 /* _MM_HINT_T0 */);
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}
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#endif /* __PRFCHWINTRIN_H */
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#endif /* __clang__ */
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#include <intrin.h>
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#endif
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/**
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* \name The two types of endianness
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*/
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@@ -45,6 +62,9 @@
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#elif defined(__OpenBSD__)
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#include <endian.h>
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#define SDL_BYTEORDER BYTE_ORDER
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#elif defined(__FreeBSD__) || defined(__NetBSD__)
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#include <sys/endian.h>
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#define SDL_BYTEORDER BYTE_ORDER
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#else
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#if defined(__hppa__) || \
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defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
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@@ -68,22 +88,45 @@ extern "C" {
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/**
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* \file SDL_endian.h
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*/
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#if defined(__GNUC__) && defined(__i386__) && \
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!(__GNUC__ == 2 && __GNUC_MINOR__ == 95 /* broken gcc version */)
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/* various modern compilers may have builtin swap */
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#if defined(__GNUC__) || defined(__clang__)
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# define HAS_BUILTIN_BSWAP16 (_SDL_HAS_BUILTIN(__builtin_bswap16)) || \
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(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))
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# define HAS_BUILTIN_BSWAP32 (_SDL_HAS_BUILTIN(__builtin_bswap32)) || \
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(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
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# define HAS_BUILTIN_BSWAP64 (_SDL_HAS_BUILTIN(__builtin_bswap64)) || \
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(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
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/* this one is broken */
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# define HAS_BROKEN_BSWAP (__GNUC__ == 2 && __GNUC_MINOR__ <= 95)
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#else
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# define HAS_BUILTIN_BSWAP16 0
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# define HAS_BUILTIN_BSWAP32 0
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# define HAS_BUILTIN_BSWAP64 0
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# define HAS_BROKEN_BSWAP 0
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#endif
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#if HAS_BUILTIN_BSWAP16
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#define SDL_Swap16(x) __builtin_bswap16(x)
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#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
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#pragma intrinsic(_byteswap_ushort)
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#define SDL_Swap16(x) _byteswap_ushort(x)
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#elif defined(__i386__) && !HAS_BROKEN_BSWAP
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SDL_FORCE_INLINE Uint16
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SDL_Swap16(Uint16 x)
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{
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__asm__("xchgb %b0,%h0": "=q"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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#elif defined(__x86_64__)
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SDL_FORCE_INLINE Uint16
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SDL_Swap16(Uint16 x)
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{
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__asm__("xchgb %b0,%h0": "=Q"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
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#elif (defined(__powerpc__) || defined(__ppc__))
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SDL_FORCE_INLINE Uint16
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SDL_Swap16(Uint16 x)
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{
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@@ -92,7 +135,7 @@ SDL_Swap16(Uint16 x)
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__asm__("rlwimi %0,%2,8,16,23": "=&r"(result):"0"(x >> 8), "r"(x));
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return (Uint16)result;
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}
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#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
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#elif (defined(__m68k__) && !defined(__mcoldfire__))
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SDL_FORCE_INLINE Uint16
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SDL_Swap16(Uint16 x)
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{
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@@ -100,7 +143,7 @@ SDL_Swap16(Uint16 x)
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return x;
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}
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#elif defined(__WATCOMC__) && defined(__386__)
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extern _inline Uint16 SDL_Swap16(Uint16);
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extern __inline Uint16 SDL_Swap16(Uint16);
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#pragma aux SDL_Swap16 = \
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"xchg al, ah" \
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parm [ax] \
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@@ -113,32 +156,37 @@ SDL_Swap16(Uint16 x)
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}
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#endif
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#if defined(__GNUC__) && defined(__i386__)
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#if HAS_BUILTIN_BSWAP32
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#define SDL_Swap32(x) __builtin_bswap32(x)
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#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
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#pragma intrinsic(_byteswap_ulong)
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#define SDL_Swap32(x) _byteswap_ulong(x)
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#elif defined(__i386__) && !HAS_BROKEN_BSWAP
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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{
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__asm__("bswap %0": "=r"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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#elif defined(__x86_64__)
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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{
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__asm__("bswapl %0": "=r"(x):"0"(x));
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return x;
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}
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#elif defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
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#elif (defined(__powerpc__) || defined(__ppc__))
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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{
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Uint32 result;
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__asm__("rlwimi %0,%2,24,16,23": "=&r"(result):"0"(x >> 24), "r"(x));
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__asm__("rlwimi %0,%2,8,8,15": "=&r"(result):"0"(result), "r"(x));
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__asm__("rlwimi %0,%2,24,0,7": "=&r"(result):"0"(result), "r"(x));
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__asm__("rlwimi %0,%2,24,16,23": "=&r"(result): "0" (x>>24), "r"(x));
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__asm__("rlwimi %0,%2,8,8,15" : "=&r"(result): "0" (result), "r"(x));
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__asm__("rlwimi %0,%2,24,0,7" : "=&r"(result): "0" (result), "r"(x));
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return result;
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}
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#elif defined(__GNUC__) && (defined(__M68000__) || defined(__M68020__)) && !defined(__mcoldfire__)
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#elif (defined(__m68k__) && !defined(__mcoldfire__))
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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{
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@@ -146,20 +194,11 @@ SDL_Swap32(Uint32 x)
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return x;
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}
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#elif defined(__WATCOMC__) && defined(__386__)
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extern _inline Uint32 SDL_Swap32(Uint32);
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#ifndef __SW_3 /* 486+ */
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extern __inline Uint32 SDL_Swap32(Uint32);
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#pragma aux SDL_Swap32 = \
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"bswap eax" \
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parm [eax] \
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modify [eax];
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#else /* 386-only */
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#pragma aux SDL_Swap32 = \
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"xchg al, ah" \
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"ror eax, 16" \
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"xchg al, ah" \
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parm [eax] \
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modify [eax];
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#endif
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#else
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SDL_FORCE_INLINE Uint32
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SDL_Swap32(Uint32 x)
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@@ -169,31 +208,42 @@ SDL_Swap32(Uint32 x)
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}
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#endif
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#if defined(__GNUC__) && defined(__i386__)
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#if HAS_BUILTIN_BSWAP64
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#define SDL_Swap64(x) __builtin_bswap64(x)
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#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
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#pragma intrinsic(_byteswap_uint64)
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#define SDL_Swap64(x) _byteswap_uint64(x)
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#elif defined(__i386__) && !HAS_BROKEN_BSWAP
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SDL_FORCE_INLINE Uint64
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SDL_Swap64(Uint64 x)
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{
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union
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{
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struct
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{
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union {
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struct {
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Uint32 a, b;
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} s;
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Uint64 u;
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} v;
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v.u = x;
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__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1": "=r"(v.s.a), "=r"(v.s.b):"0"(v.s.a),
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"1"(v.s.
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b));
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__asm__("bswapl %0 ; bswapl %1 ; xchgl %0,%1"
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: "=r"(v.s.a), "=r"(v.s.b)
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: "0" (v.s.a), "1"(v.s.b));
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return v.u;
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}
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#elif defined(__GNUC__) && defined(__x86_64__)
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#elif defined(__x86_64__)
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SDL_FORCE_INLINE Uint64
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SDL_Swap64(Uint64 x)
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{
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__asm__("bswapq %0": "=r"(x):"0"(x));
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return x;
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}
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#elif defined(__WATCOMC__) && defined(__386__)
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extern __inline Uint64 SDL_Swap64(Uint64);
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#pragma aux SDL_Swap64 = \
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"bswap eax" \
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"bswap edx" \
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"xchg eax,edx" \
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parm [eax edx] \
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modify [eax edx];
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#else
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SDL_FORCE_INLINE Uint64
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SDL_Swap64(Uint64 x)
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@@ -215,8 +265,7 @@ SDL_Swap64(Uint64 x)
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SDL_FORCE_INLINE float
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SDL_SwapFloat(float x)
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{
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union
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{
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union {
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float f;
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Uint32 ui32;
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} swapper;
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@@ -225,6 +274,11 @@ SDL_SwapFloat(float x)
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return swapper.f;
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}
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/* remove extra macros */
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#undef HAS_BROKEN_BSWAP
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#undef HAS_BUILTIN_BSWAP16
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#undef HAS_BUILTIN_BSWAP32
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#undef HAS_BUILTIN_BSWAP64
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/**
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* \name Swap to native
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@@ -232,22 +286,22 @@ SDL_SwapFloat(float x)
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*/
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/* @{ */
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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#define SDL_SwapLE16(X) (X)
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#define SDL_SwapLE32(X) (X)
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#define SDL_SwapLE64(X) (X)
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#define SDL_SwapLE16(X) (X)
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#define SDL_SwapLE32(X) (X)
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#define SDL_SwapLE64(X) (X)
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#define SDL_SwapFloatLE(X) (X)
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#define SDL_SwapBE16(X) SDL_Swap16(X)
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#define SDL_SwapBE32(X) SDL_Swap32(X)
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#define SDL_SwapBE64(X) SDL_Swap64(X)
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#define SDL_SwapBE16(X) SDL_Swap16(X)
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#define SDL_SwapBE32(X) SDL_Swap32(X)
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#define SDL_SwapBE64(X) SDL_Swap64(X)
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#define SDL_SwapFloatBE(X) SDL_SwapFloat(X)
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#else
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#define SDL_SwapLE16(X) SDL_Swap16(X)
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#define SDL_SwapLE32(X) SDL_Swap32(X)
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#define SDL_SwapLE64(X) SDL_Swap64(X)
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#define SDL_SwapLE16(X) SDL_Swap16(X)
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#define SDL_SwapLE32(X) SDL_Swap32(X)
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#define SDL_SwapLE64(X) SDL_Swap64(X)
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#define SDL_SwapFloatLE(X) SDL_SwapFloat(X)
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#define SDL_SwapBE16(X) (X)
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#define SDL_SwapBE32(X) (X)
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#define SDL_SwapBE64(X) (X)
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#define SDL_SwapBE16(X) (X)
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#define SDL_SwapBE32(X) (X)
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#define SDL_SwapBE64(X) (X)
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#define SDL_SwapFloatBE(X) (X)
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#endif
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/* @} *//* Swap to native */
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