mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-12 14:20:04 +00:00
80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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const unsigned int vec0[4]
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= { 0x12345678, 0x11223344, 0x55667788, 0x87654321 };
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const unsigned int vec1[4]
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= { 0xABCDEF01, 0xAABBCCDD, 0xEEFF0011, 0x10FEDCBA };
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/* set up the FP and SSE state, and then dump it. */
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void do_fxsave ( void* p )
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{
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asm __volatile__("finit");
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asm __volatile__("fldpi");
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asm __volatile__("fld1");
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asm __volatile__("fldln2");
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asm __volatile__("fldlg2");
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asm __volatile__("fld %st(3)");
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asm __volatile__("fld %st(3)");
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asm __volatile__("fld1");
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asm __volatile__("movups (%0), %%xmm0" : : "r"(&vec0[0]) : "xmm0" );
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asm __volatile__("movups (%0), %%xmm1" : : "r"(&vec1[0]) : "xmm1" );
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asm __volatile__("xorps %xmm2, %xmm2");
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asm __volatile__("movaps %xmm0, %xmm3");
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asm __volatile__("movaps %xmm1, %xmm4");
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asm __volatile__("movaps %xmm2, %xmm5");
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asm __volatile__("movaps %xmm0, %xmm6");
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asm __volatile__("movaps %xmm1, %xmm7");
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asm __volatile__("movaps %xmm1, %xmm8");
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asm __volatile__("movaps %xmm2, %xmm9");
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asm __volatile__("movaps %xmm0, %xmm10");
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asm __volatile__("movaps %xmm1, %xmm11");
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asm __volatile__("movaps %xmm1, %xmm12");
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asm __volatile__("movaps %xmm2, %xmm13");
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asm __volatile__("movaps %xmm0, %xmm14");
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asm __volatile__("movaps %xmm1, %xmm15");
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asm __volatile__("fxsave (%0)" : : "r" (p) : "memory" );
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}
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int isFPLsbs ( int i )
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{
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int q;
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q = 32; if (i == q || i == q+1) return 1;
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q = 48; if (i == q || i == q+1) return 1;
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q = 64; if (i == q || i == q+1) return 1;
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q = 80; if (i == q || i == q+1) return 1;
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q = 96; if (i == q || i == q+1) return 1;
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q = 112; if (i == q || i == q+1) return 1;
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q = 128; if (i == q || i == q+1) return 1;
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q = 144; if (i == q || i == q+1) return 1;
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return 0;
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}
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int main ( int argc, char** argv )
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{
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int i, j;
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unsigned char* buf = malloc(512);
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int xx = 1; /* argc > 1;
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printf("Re-run with any arg to suppress least-significant\n"
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" 16 bits of FP numbers\n");
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*/
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for (i = 0; i < 512; i++)
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buf[i] = 0x55;
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do_fxsave(buf);
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for (j = 0; j < 512; j++) {
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i = (j & 0xFFF0) + (15 - (j & 0xF));
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if ((j % 16) == 0)
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printf("%3d ", j);
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if (xx && isFPLsbs(i))
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printf("xx ");
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else
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printf("%02x ", buf[i]);
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if (j > 0 && ((j % 16) == 15))
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printf("\n");
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}
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return 0;
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}
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