114 lines
2.1 KiB
CMake
114 lines
2.1 KiB
CMake
set(wx_sdl_c_code "
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#include <wx/setup.h>
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#if (wxUSE_LIBSDL == 0)
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#error cmake_WX_SDL
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#endif
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int main()
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{
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return 0;
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}
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")
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set(gcc7_mmx_code "
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#include <stdio.h>
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#include <stdint.h>
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#include <xmmintrin.h>
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#include <emmintrin.h>
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class alignas(16) GSVector4i
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{
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public:
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__m128i m;
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explicit GSVector4i(__m128i m)
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{
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this->m = m;
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}
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static void storel(void* p, const GSVector4i& v)
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{
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_mm_storel_epi64((__m128i*)p, v.m);
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}
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static GSVector4i loadl(const void* p)
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{
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return GSVector4i(_mm_loadl_epi64((__m128i*)p));
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}
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bool eq(const GSVector4i& v) const
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{
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return _mm_movemask_epi8(_mm_cmpeq_epi32(m, v.m)) == 0xffff;
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}
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};
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union GIFRegTRXPOS
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{
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unsigned long long u64;
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void operator = (const GSVector4i& v) {GSVector4i::storel(this, v);}
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bool operator != (const union GIFRegTRXPOS& r) const {return !((GSVector4i)r).eq(*this);}
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operator GSVector4i() const {return GSVector4i::loadl(this);}
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};
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extern GIFRegTRXPOS TRXPOS;
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GIFRegTRXPOS TRXPOS = {};
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void GIFRegHandlerTRXPOS(const GIFRegTRXPOS& p)
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{
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if(p != TRXPOS)
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{
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printf(\"foo\");
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}
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TRXPOS = (GSVector4i)p;
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}
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int main()
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{
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GIFRegTRXPOS r = {};
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GIFRegHandlerTRXPOS(r);
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uint16_t fpu[16] = {0};
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__asm__ __volatile__(\"fstenv %0\" : \"=m\"(fpu));
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bool ok = fpu[4] == 0xFFFF;
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if (!ok) {
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printf(\"Wrong MMX state !\");
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exit(1);
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}
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return 0;
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}
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")
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function(GCC7_BUG)
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# try_run doesn't work when cross-compiling is enabled. It is completely silly in our case
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# as i386 binaries are 100% fine on x64.
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set(OLD_CMAKE_CROSSCOMPILING ${CMAKE_CROSSCOMPILING})
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set(CMAKE_CROSSCOMPILING 0)
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set(IN "${CMAKE_BINARY_DIR}/gcc7_mmx.cpp")
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file(WRITE "${IN}" "${gcc7_mmx_code}")
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enable_language(CXX)
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try_run(
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run_result
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compile_result_unused
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"${CMAKE_BINARY_DIR}"
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"${IN}"
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CMAKE_FLAGS "-DCOMPILE_DEFINITIONS:STRING=-msse -msse2 -O2 -m32 -march=i686"
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)
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if (${run_result})
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message(FATAL_ERROR "GCC 7.0/7.1 generates invalid code => https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80799\n"
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"You can either backport the fix or swith to another version of GCC.")
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endif()
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set(CMAKE_CROSSCOMPILING ${OLD_CMAKE_CROSSCOMPILING})
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endfunction()
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