pcsxr-1.9.92

1 files changed, 248 insertions, 0 deletions

diff --git a/libpcsxcore/ix86_64/ix86_fpu.c b/libpcsxcore/ix86_64/ix86_fpu.c
new file mode 100644
index 0000000..ca49eb7
--- /dev/null
+++ b/libpcsxcore/ix86_64/ix86_fpu.c
@@ -0,0 +1,248 @@
+// stop compiling if NORECBUILD build (only for Visual Studio)
+#if !(defined(_MSC_VER) && defined(PCSX2_NORECBUILD))
+
+#include <stdio.h>
+#include <string.h>
+#include "ix86-64.h"
+
+/********************/
+/* FPU instructions */
+/********************/
+
+/* fild m32 to fpu reg stack */
+void FILD32( uptr from )
+{
+	MEMADDR_OP(0, VAROP1(0xDB), false, 0, from, 0);
+}
+
+/* fistp m32 from fpu reg stack */
+void FISTP32( uptr from ) 
+{
+	MEMADDR_OP(0, VAROP1(0xDB), false, 3, from, 0);
+}
+
+/* fld m32 to fpu reg stack */
+void FLD32( uptr from )
+{
+	MEMADDR_OP(0, VAROP1(0xD9), false, 0, from, 0);
+}
+
+// fld st(i)
+void FLD(int st) { write16(0xc0d9+(st<<8)); }
+
+void FLD1() { write16(0xe8d9); }
+void FLDL2E() { write16(0xead9); }
+
+/* fst m32 from fpu reg stack */
+void FST32( uptr to ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD9), false, 2, to, 0);
+}
+
+/* fstp m32 from fpu reg stack */
+void FSTP32( uptr to )
+{
+	MEMADDR_OP(0, VAROP1(0xD9), false, 3, to, 0);
+}
+
+// fstp st(i)
+void FSTP(int st) { write16(0xd8dd+(st<<8)); }
+
+/* fldcw fpu control word from m16 */
+void FLDCW( uptr from )
+{
+	MEMADDR_OP(0, VAROP1(0xD9), false, 5, from, 0);
+}
+
+/* fnstcw fpu control word to m16 */
+void FNSTCW( uptr to ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD9), false, 7, to, 0);
+}
+
+void FNSTSWtoAX( void ) 
+{
+	write16( 0xE0DF );
+}
+
+void FXAM()
+{
+	write16(0xe5d9);
+}
+
+void FDECSTP() { write16(0xf6d9); }
+void FRNDINT() { write16(0xfcd9); }
+void FXCH(int st) { write16(0xc8d9+(st<<8)); }
+void F2XM1() { write16(0xf0d9); }
+void FSCALE() { write16(0xfdd9); }
+
+/* fadd ST(src) to fpu reg stack ST(0) */
+void FADD32Rto0( x86IntRegType src )
+{
+   write8( 0xD8 );
+   write8( 0xC0 + src );
+}
+
+/* fadd ST(0) to fpu reg stack ST(src) */
+void FADD320toR( x86IntRegType src )
+{
+   write8( 0xDC );
+   write8( 0xC0 + src );
+}
+
+/* fsub ST(src) to fpu reg stack ST(0) */
+void FSUB32Rto0( x86IntRegType src )
+{
+   write8( 0xD8 );
+   write8( 0xE0 + src );
+}
+
+/* fsub ST(0) to fpu reg stack ST(src) */
+void FSUB320toR( x86IntRegType src )
+{
+   write8( 0xDC );
+   write8( 0xE8 + src );
+}
+
+/* fsubp -> substract ST(0) from ST(1), store in ST(1) and POP stack */
+void FSUBP( void )
+{
+   write8( 0xDE );
+   write8( 0xE9 );
+}
+
+/* fmul ST(src) to fpu reg stack ST(0) */
+void FMUL32Rto0( x86IntRegType src )
+{
+   write8( 0xD8 );
+   write8( 0xC8 + src );
+}
+
+/* fmul ST(0) to fpu reg stack ST(src) */
+void FMUL320toR( x86IntRegType src )
+{
+   write8( 0xDC );
+   write8( 0xC8 + src );
+}
+
+/* fdiv ST(src) to fpu reg stack ST(0) */
+void FDIV32Rto0( x86IntRegType src )
+{
+   write8( 0xD8 );
+   write8( 0xF0 + src );
+}
+
+/* fdiv ST(0) to fpu reg stack ST(src) */
+void FDIV320toR( x86IntRegType src )
+{
+   write8( 0xDC );
+   write8( 0xF8 + src );
+}
+
+void FDIV320toRP( x86IntRegType src )
+{
+	write8( 0xDE );
+	write8( 0xF8 + src );
+}
+
+/* fadd m32 to fpu reg stack */
+void FADD32( uptr from ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 0, from, 0);
+}
+
+/* fsub m32 to fpu reg stack */
+void FSUB32( uptr from ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 4, from, 0);
+}
+
+/* fmul m32 to fpu reg stack */
+void FMUL32( uptr from )
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 1, from, 0);
+}
+
+/* fdiv m32 to fpu reg stack */
+void FDIV32( uptr from ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 6, from, 0);
+}
+
+/* fabs fpu reg stack */
+void FABS( void )
+{
+	write16( 0xE1D9 );
+}
+
+/* fsqrt fpu reg stack */
+void FSQRT( void ) 
+{
+	write16( 0xFAD9 );
+}
+
+void FPATAN(void) { write16(0xf3d9); }
+void FSIN(void) { write16(0xfed9); }
+
+/* fchs fpu reg stack */
+void FCHS( void ) 
+{
+	write16( 0xE0D9 );
+}
+
+/* fcomi st, st(i) */
+void FCOMI( x86IntRegType src )
+{
+	write8( 0xDB );
+	write8( 0xF0 + src ); 
+}
+
+/* fcomip st, st(i) */
+void FCOMIP( x86IntRegType src )
+{
+	write8( 0xDF );
+	write8( 0xF0 + src ); 
+}
+
+/* fucomi st, st(i) */
+void FUCOMI( x86IntRegType src )
+{
+	write8( 0xDB );
+	write8( 0xE8 + src ); 
+}
+
+/* fucomip st, st(i) */
+void FUCOMIP( x86IntRegType src )
+{
+	write8( 0xDF );
+	write8( 0xE8 + src ); 
+}
+
+/* fcom m32 to fpu reg stack */
+void FCOM32( uptr from ) 
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 2, from, 0);
+}
+
+/* fcomp m32 to fpu reg stack */
+void FCOMP32( uptr from )
+{
+	MEMADDR_OP(0, VAROP1(0xD8), false, 3, from, 0);
+}
+
+#define FCMOV32( low, high ) \
+   { \
+	   write8( low ); \
+	   write8( high + from );  \
+   }
+
+void FCMOVB32( x86IntRegType from )     { FCMOV32( 0xDA, 0xC0 ); }
+void FCMOVE32( x86IntRegType from )     { FCMOV32( 0xDA, 0xC8 ); }
+void FCMOVBE32( x86IntRegType from )    { FCMOV32( 0xDA, 0xD0 ); }
+void FCMOVU32( x86IntRegType from )     { FCMOV32( 0xDA, 0xD8 ); }
+void FCMOVNB32( x86IntRegType from )    { FCMOV32( 0xDB, 0xC0 ); }
+void FCMOVNE32( x86IntRegType from )    { FCMOV32( 0xDB, 0xC8 ); }
+void FCMOVNBE32( x86IntRegType from )   { FCMOV32( 0xDB, 0xD0 ); }
+void FCMOVNU32( x86IntRegType from )    { FCMOV32( 0xDB, 0xD8 ); }
+
+#endif