Function testFSAVE

source/test/testFPU.cpp:2366–2414

#define FPU_GET_TOP(sw) ((sw & 0x3800) >> 11)

void testFSAVE() {
    float f1 = 1;
    float f2 = 0;
    float f3 = -1;
    float f4 = .001f;
    struct FSaveState state;
    struct FSaveState16 state16;

#if defined (BOXEDWINE_MSVC) && !defined (BOXEDWINE_64)
    {
        __asm {
            finit;
            fld f1;
            fld f2;
            fld f3;
            fld f4;
            fsave[state];
        }
        U32 top = FPU_GET_TOP(state.fsw);
        assertTrue(top == 4);
        assertTrue(state.ftw == 0x10ff); // TAG_Valid << 14 | TAG_Zero << 12 || TAG_Valid << 10 |  || TAG_Valid << 8 (0xff for 4 TAG_Empty)
    }
#endif
    newInstruction(0);
    fpu_init();
    fldf32(f1, 1);
    fldf32(f2, 2);
    fldf32(f3, 3);
    fldf32(f4, 4);
    pushCode8(0xdd);
    pushCode8(rm(true, 6, cpu->big ? 5 : 6));
    if (cpu->big) {
        pushCode32(0);
    } else {
        pushCode16(0);
    }
    runTestCPU();
    if (cpu->isBig()) {
        cpu->memory->memcpy(&state, HEAP_ADDRESS, sizeof(state));
        U32 top = FPU_GET_TOP(state.fsw);
        assertTrue(top == 4);
        assertTrue(state.ftw == 0x10ff);
    } else {
        cpu->memory->memcpy(&state16, HEAP_ADDRESS, sizeof(state16));
        U32 top = FPU_GET_TOP(state16.fsw);
        assertTrue(top == 4);
        assertTrue(state16.ftw == 0x10ff);
    }
}

void testFSAVEMmx() {
    float f1 = 1;