Initial revision

From-SVN: r358

gcc/config/i386/mach.h

+/* Configuration for an i386 running Mach as the target machine.  */
+#include "i386gas.h"
+
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-Dunix -Di386 -DMACH"
+
+/* Specify extra dir to search for include files.  */
+#define SYSTEM_INCLUDE_DIR "/usr/mach/include"
+
+/* Defines to be able to build libgcc.a with GCC.  */
+
+#define perform_udivsi3(a,b)						\
+{									\
+  register int dx asm("dx");						\
+  register int ax asm("ax");						\
+									\
+  dx = 0;								\
+  ax = a;								\
+  asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx));	\
+  return ax;								\
+}
+
+#define perform_divsi3(a,b)							\
+{									\
+  register int dx asm("dx");						\
+  register int ax asm("ax");						\
+									\
+  ax = a;								\
+  asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b));	\
+  return ax;								\
+}
+
+#define perform_umodsi3(a,b)						\
+{									\
+  register int dx asm("dx");						\
+  register int ax asm("ax");						\
+									\
+  dx = 0;								\
+  ax = a;								\
+  asm ("divl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b), "d" (dx));	\
+  return dx;								\
+}
+
+#define perform_modsi3(a,b)							\
+{									\
+  register int dx asm("dx");						\
+  register int ax asm("ax");						\
+									\
+  ax = a;								\
+  asm ("cltd\n\tidivl %3" : "=a" (ax), "=d" (dx) : "a" (ax), "g" (b));	\
+  return dx;								\
+}
+
+#define perform_fix_truncdfsi2(a)						\
+{									\
+  auto unsigned short ostatus;						\
+  auto unsigned short nstatus;						\
+  auto int ret;								\
+									\
+  &ostatus;			/* guarantee these land in memory */	\
+  &nstatus;								\
+  &ret;									\
+									\
+  asm volatile ("fnstcw %0" : "=m" (ostatus));				\
+  nstatus = ostatus | 0x0c00;						\
+  asm volatile ("fldcw %0" : /* no outputs */ : "m" (nstatus));		\
+  asm volatile ("fldl %0" : /* no outputs */ : "m" (a));		\
+  asm volatile ("fistpl %0" : "=m" (ret));				\
+  asm volatile ("fldcw %0" : /* no outputs */ : "m" (nstatus));		\
+									\
+  return ret;								\
+}