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SDL_blit_copy: Don't call potentially FPU using SDL_memcpy in SDL_memcpyMMX

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Anonymous Maarten
2023-03-25 07:07:49 +01:00
committed by Anonymous Maarten
parent 37c9329db2
commit 9ada9daf51
2 changed files with 6 additions and 5 deletions
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3
CMakeLists.txt
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@@ -508,16 +508,13 @@ if(USE_INTELCC)
# warning #39: division by zero
# warning #239: floating point underflow
# warning #264: floating-point value does not fit in required floating-point type
# warning #13203: No EMMS instruction before call to function
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_exp.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd239 -wd264")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_log.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/libm/e_log10.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd39")
set_property(SOURCE "${SDL3_SOURCE_DIR}/src/video/SDL_blit_copy.c" APPEND_STRING PROPERTY COMPILE_FLAGS " -wd13203")
set_property(SOURCE
"${SDL3_SOURCE_DIR}/src/libm/e_exp.c"
"${SDL3_SOURCE_DIR}/src/libm/e_log.c"
"${SDL3_SOURCE_DIR}/src/libm/e_log10.c"
"${SDL3_SOURCE_DIR}/src/libm/SDL_blit_copy.c"
PROPERTY SKIP_PRECOMPILE_HEADERS 1)
endif()

8
src/video/SDL_blit_copy.c
View File

@@ -56,7 +56,7 @@ static SDL_INLINE void SDL_TARGETING("sse") SDL_memcpySSE(Uint8 *dst, const Uint
#endif
static SDL_INLINE void SDL_TARGETING("mmx") SDL_memcpyMMX(Uint8 *dst, const Uint8 *src, int len)
{
const int remain = (len & 63);
int remain = len & 63;
int i;
__m64 *d64 = (__m64 *)dst;
@@ -78,7 +78,11 @@ static SDL_INLINE void SDL_TARGETING("mmx") SDL_memcpyMMX(Uint8 *dst, const Uint
if (remain) {
const int skip = len - remain;
SDL_memcpy(dst + skip, src + skip, remain);
dst += skip;
src += skip;
while (remain--) {
*dst++ = *src++;
}
}
}