use con_float file, and use new interface to fif and fef routines
authorceriel <none@none>
Mon, 31 Jul 1989 11:42:27 +0000 (11:42 +0000)
committerceriel <none@none>
Mon, 31 Jul 1989 11:42:27 +0000 (11:42 +0000)
mach/i86/cg/mach.c
mach/i86/cg/table

index 009f84d..0499ca4 100644 (file)
@@ -41,149 +41,9 @@ con_mult(sz) word sz; {
                        (int)l&0xFFFF,(int)(l>>16)&0xFFFF);
 }
 
-#ifdef NOFLOAT
-con_float() {
-
-static int been_here;
-       if (argval != 4 && argval != 8)
-               fatal("bad fcon size");
-       fputs(".data4\t", codefile);
-       if (argval == 8)
-               fputs("0,", codefile);
-       fputs("0 !dummy float\n", codefile);
-       if ( !been_here++)
-       {
-       fputs("Warning : dummy float-constant(s)\n", stderr);
-       }
-}
-#else
+#define CODE_GENERATOR
 #define IEEEFLOAT
-
-con_float() {
-       double f;
-       double atof();
-       int i;
-       int j;
-       double frexp();
-#ifndef OWNFLOAT
-       int sign = 0;
-       int fraction[4] ;
-#else OWNFLOAT
-       float fl;
-       char *p;
-#endif OWNFLOAT
-
-       if (argval!= 4 && argval!= 8)   {
-               fprintf(stderr,"float constant size = %d\n",argval);
-               fatal("bad fcon size");
-       }
-       fprintf(codefile,"!float %s sz %d\n", str, argval);
-       f = atof(str);
-       if (f == 0) {
-               if (argval == 8) fprintf(codefile, ".data2 0, 0\n");
-               fprintf(codefile, ".data2 0, 0\n");
-               return;
-       }
-#ifdef OWNFLOAT
-       if (argval == 4) {
-               /* careful: avoid overflow */
-               double ldexp();
-               f = frexp(f, &i);
-               fl = f;
-               fl = frexp(fl,&j);
-               if (i+j > 127) {
-                       /* overflow situation */
-                       fprintf(codefile, ".data1 0%o, 0377, 0377, 0377 ! overflow\n",
-                               f < 0 ? 0377 : 0177);
-                       return;
-               }
-               if (i+j < -127) {
-                       /* underflow situation */
-                       fprintf(codefile, ".data1 0%o, 0200, 0, 0 ! underflow\n",
-                               f < 0 ? 0200 : 0);
-                       return;
-               }
-               fl = ldexp(fl, i+j);
-               p = (char *) &fl;
-       }
-       else {
-               p = (char *) &f;
-       }
-       fprintf(codefile, ".data1 0%o", *p++ & 0377);
-       for (i = argval-1; i; i--) {
-               fprintf(codefile,",0%o", *p++ & 0377);
-       }
-#else OWNFLOAT
-       f = frexp(f, &i);
-       if (f < 0) {
-               f = -f;
-               sign = 1;
-       }
-       while (f < 0.5) {
-               f += f;
-               i --;
-       }
-       f = 2*f - 1.0;          /* hidden bit */
-#ifdef IEEEFLOAT
-       if (argval == 4) {
-#endif IEEEFLOAT
-               i = (i + 128) & 0377;
-               fraction[0] = (sign << 15) | (i << 7);
-               for (j = 6; j>= 0; j--) {
-                       f *= 2;
-                       if (f >= 1.0) {
-                               f -= 1.0;
-                               fraction[0] |= (1 << j);
-                       }
-               }
-#ifdef IEEEFLOAT
-       }
-       else {
-               i = (i + 1024) & 03777;
-               fraction[0] = (sign << 15) | (i << 4);
-               for (j = 3; j>= 0; j--) {
-                       f *= 2;
-                       if (f >= 1.0) {
-                               fraction[0] |= (1 << j);
-                               f -= 1.0;
-                       }
-               }
-       }
-#endif IEEEFLOAT
-       for (i = 1; i < argval / 2; i++) {
-               fraction[i] = 0;
-               for (j = 15; j>= 0; j--) {
-                       f *= 2;
-                       if (f >= 1.0) {
-                               fraction[i] |= (1 << j);
-                               f -= 1.0;
-                       }
-               }
-       }
-       if (f >= 0.5) {
-               for (i = argval/2 - 1; i >= 0; i--) {
-                       for (j = 0; j < 16; j++) {
-                               if (fraction[i] & (1 << j)) {
-                                       fraction[i] &= ~(1 << j);
-                               }
-                               else {
-                                       fraction[i] |= (1 << j);
-                                       break;
-                               }
-                       }
-                       if (j != 16) break;
-               }
-       }
-       for (i = 0; i < argval/2; i++) {
-               fprintf(codefile,
-                       i != 0 ? ", 0%o, 0%o" : ".data1 0%o, 0%o", 
-                       (fraction[i]>>8)&0377,
-                       fraction[i]&0377);
-       }
-#endif OWNFLOAT
-       putc('\n', codefile);
-}
-#endif
+#include <con_float>
 
 /*
 
index 1beab9c..a4b4796 100644 (file)
@@ -820,20 +820,10 @@ dvf $1==4 | | | | cal ".dvf4" asp 4 |
 dvf $1==8      | | | | cal ".dvf8" asp 8 |
 ngf $1==4      | | | | cal ".ngf4" |
 ngf $1==8      | | | | cal ".ngf8" |
-fif $1==4      | | | | cal ".fif4" |
-fif $1==8      | | | | cal ".fif8" |
-fef $1==4      | X_REG X_REG |
-               remove(ALL)
-               "push %[2]"
-               "push %[2]"
-               "push %[1]"     | | cal ".fef4" |
-fef $1==8      | X_REG X_REG X_REG X_REG |
-               remove(ALL)
-               "push %[4]"
-               "push %[4]"
-               "push %[3]"
-               "push %[2]"
-               "push %[1]"     | | cal ".fef8" |
+fif $1==4      | | | | lor 1 cal ".fif4" asp 2 |
+fif $1==8      | | | | lor 1 cal ".fif8" asp 2 |
+fef $1==4      | | | | lor 1 adp 0-2 cal ".fef4" |
+fef $1==8      | | | | lor 1 adp 0-2 cal ".fef8" |
 
 /****************************************
  * Group 6 : pointer arithmetic.       *