included floating point code in table

This commit is contained in:
ceriel 1987-11-04 09:44:00 +00:00
parent 4b265a4f0a
commit 086a086d12
2 changed files with 237 additions and 107 deletions

View file

@ -41,21 +41,88 @@ con_mult(sz) word sz; {
(int)l&0xFFFF,(int)(l>>16)&0xFFFF);
}
con_float() {
register i;
static int warning_given;
#define IEEEFLOAT
i= argval ;
if (i!= 4 && i!= 8)
con_float() {
double f;
double atof();
float fl;
int i;
#ifndef OWNFLOAT
double f1;
double frexp(), modf();
int j;
int sign = 0;
int fraction ;
#else OWNFLOAT
char *p;
#endif OWNFLOAT
if (argval!= 4 && argval!= 8) {
fprintf(stderr,"float constant size = %d\n",argval);
fatal("bad fcon size");
if (! warning_given) {
fputs("Warning: dummy floating point constant(s)\n", stderr);
warning_given = 1;
}
while ( i ) {
fputs(" .data2 0,0\n", codefile) ;
i -=4 ;
fprintf(codefile,"!float %s sz %d\n", str, argval);
f = atof(str);
#ifdef OWNFLOAT
if (argval == 4) {
fl = f;
p = (char *) &fl;
}
else {
p = (char *) &f;
}
fprintf(codefile, ".data1 0%o", *p++ & 0377);
for (i = argval-2; i; i--) {
fprintf(codefile,",0%o", *p++ & 0377);
}
#else OWNFLOAT
f = frexp(f, &i);
if (f < 0) {
f = -f;
sign = 1;
}
if (f == 0) {
if (argval == 8) fprintf(codefile, ".data2 0, 0\n");
fprintf(codefile, ".data2 0, 0\n");
return;
}
while (f < 0.5) {
f += f;
i --;
}
f = modf(2 * f, &f1); /* hidden bit */
#ifdef IEEEFLOAT
if (argval == 4) {
#endif IEEEFLOAT
i = (i + 128) & 0377;
fraction = (sign << 15) | (i << 7);
for (j = 6; j>= 0; j--) {
if (f >= 0.5) fraction |= (1 << j);
f = modf(2*f, &f1);
}
#ifdef IEEEFLOAT
}
else {
i = (i + 1024) & 03777;
fraction = (sign << 15) | (i << 4);
for (j = 3; j>= 0; j--) {
if (f >= 0.5) fraction |= (1 << j);
f = modf(2*f, &f1);
}
}
#endif IEEEFLOAT
fprintf(codefile, ".data1 0%o, 0%o", (fraction>>8)&0377, fraction&0377);
for (i = argval / 2 - 1; i; i--) {
fraction = 0;
for (j = 15; j>= 0; j--) {
if (f >= 0.5) fraction |= (1 << j);
f = modf(2*f, &f1);
}
fprintf(codefile, ", 0%o, 0%o", (fraction>>8)&0377, fraction&0377);
}
#endif OWNFLOAT
putc('\n', codefile);
}
/*

View file

@ -815,71 +815,40 @@ sru !defined($1)| X_ACC |
* *
************************************************/
adf $1==4 | |
remove(ALL)
"call .adf4" | | |
adf $1==8 | |
remove(ALL)
"call .adf8" | | |
adf !defined($1) | X_CXREG |
remove(ALL)
"call .adf" erase(%[1]) | | |
sbf $1==4 | |
remove(ALL)
"call .sbf4" | | |
sbf $1==8 | |
remove(ALL)
"call .sbf8" | | |
sbf !defined($1) | X_CXREG |
remove(ALL)
"call .sbf" erase(%[1]) | | |
mlf $1==4 | |
remove(ALL)
"call .mlf4" | | |
mlf $1==8 | |
remove(ALL)
"call .mlf8" | | |
mlf !defined($1) | X_CXREG |
remove(ALL)
"call .mlf" erase(%[1]) | | |
dvf $1==4 | |
remove(ALL)
"call .dvf4" | | |
dvf $1==8 | |
remove(ALL)
"call .dvf8" | | |
dvf !defined($1) | X_CXREG |
remove(ALL)
"call .dvf" erase(%[1]) | | |
ngf $1==4 | |
remove(ALL)
"call .ngf4" | | |
ngf $1==8 | |
remove(ALL)
"call .ngf8" | | |
ngf !defined($1) | X_CXREG |
remove(ALL)
"call .ngf" erase(%[1]) | | |
fif $1==4 | |
remove(ALL)
"call .fif4" | | |
fif $1==8 | |
remove(ALL)
"call .fif8" | | |
fif !defined($1) | X_CXREG |
remove(ALL)
"call .fif" erase(%[1]) | | |
/* Floating point stuff
* Arithmetic instructions
*/
adf $1==4 | | | | cal ".adf4" asp 4 |
adf $1==8 | | | | cal ".adf8" asp 8 |
sbf $1==4 | | | | cal ".sbf4" asp 4 |
sbf $1==8 | | | | cal ".sbf8" asp 8 |
mlf $1==4 | | | | cal ".mlf4" asp 4 |
mlf $1==8 | | | | cal ".mlf8" asp 8 |
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 | |
remove(ALL)
"call .fef4" | | |
"pop bx"
"pop ax"
"push ax"
"push ax"
"push bx" | | cal ".fef4" |
fef $1==8 | |
remove(ALL)
"call .fef8" | | |
fef !defined($1) | X_CXREG |
remove(ALL)
"call .fef" erase(%[1]) | | |
"pop ax"
"pop bx"
"pop cx"
"pop dx"
"push dx"
"push dx"
"push cx"
"push bx"
"push ax" | | cal ".fef8" |
/****************************************
* Group 6 : pointer arithmetic. *
@ -1088,15 +1057,6 @@ zrl | | remove(indexed)
| | |
zre | | remove(indirects)
move({ANYCON,0},{EXTERN2,$1})| | |
zrf $1==4 | |
remove(ALL)
"call .zrf4" | | |
zrf $1==8 | |
remove(ALL)
"call .zrf8" | | |
zrf !defined($1) | X_CXREG |
remove(ALL)
"call .zrf" erase(%[1]) | | |
zer $1==2 | | | {ANYCON,0} | |
zer $1==4 | | | {ANYCON,0} {ANYCON,0} | |
zer $1==6 | | | {ANYCON,0} {ANYCON,0}
@ -1533,21 +1493,6 @@ cuu | CXREG DXREG X_ACC |
remove(ALL)
"call .cuu"
erase(%[3]) | %[3] | |
cif | CXREG DXREG |
remove(ALL)
"call .cif" | | |
cuf | CXREG DXREG |
remove(ALL)
"call .cuf" | | |
cfi | CXREG DXREG |
remove(ALL)
"call .cfi" | | |
cfu | CXREG DXREG |
remove(ALL)
"call .cfu" | | |
cff | CXREG DXREG |
remove(ALL)
"call .cff" | | |
loc loc cii $1==1 && $2==2 | X_ACC |
"cbw"
samecc | ax | |(1,2)
@ -1577,6 +1522,120 @@ loc loc cuu $1==2 && $2==4 | a_word |
allocate(REG={ANYCON,0})| %[a] %[1] | |
loc loc cuu $1==4 && $2==2 | a_word a_word | | %[1] | |
/*
* Floating point stuff
* Conversion
*/
loc loc cif $1==2 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax" | | cal ".cif4" |
loc loc cif $1==4 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax" | | cal ".cif4" asp 2 |
loc loc cif $1==2 && $2==8 | |
remove(ALL)
"pop ax"
"push ax"
"push ax"
"push ax"
"mov ax,$1"
"push ax" | | cal ".cif8" |
loc loc cif $1==4 && $2==8 | |
remove(ALL)
"pop ax"
"pop dx"
"push ax"
"push ax"
"push dx"
"mov ax,$1"
"push ax" | | cal ".cif8" |
loc loc cuf $1==2 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax" | | cal ".cuf4" |
loc loc cuf $1==4 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax" | | cal ".cuf4" asp 2 |
loc loc cuf $1==2 && $2==8 | |
remove(ALL)
"pop ax"
"push ax"
"push ax"
"push ax"
"mov ax,$1"
"push ax" | | cal ".cuf8" |
loc loc cuf $1==4 && $2==8 | |
remove(ALL)
"pop ax"
"pop dx"
"push ax"
"push ax"
"push dx"
"mov ax,$1"
"push ax" | | cal ".cuf8" |
loc loc cfi $1==4 && $2==2 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfi" asp 8 lfr 2 |
loc loc cfi $1==4 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfi" asp 4 |
loc loc cfi $1==8 && $2==2 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfi" asp 12 lfr 2 |
loc loc cfi $1==8 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfi" asp 8 |
loc loc cfu $1==4 && $2==2 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfu" asp 6 |
loc loc cfu $1==4 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfu" asp 4 |
loc loc cfu $1==8 && $2==2 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfu" asp 10 |
loc loc cfu $1==8 && $2==4 | |
remove(ALL)
"mov ax,$1"
"push ax"
"mov ax,$2"
"push ax" | | cal ".cfu" asp 8 |
loc loc cff $1==8 && $2==4 | |
remove(ALL) | | cal ".cff4" asp 4 |
loc loc cff $1==4 && $2==8 | |
remove(ALL)
"pop bx"
"pop dx"
"xor ax,ax"
"push ax"
"push ax"
"push dx"
"push bx" | | cal ".cff8" |
/****************************************
* Group 9 : Logical instructions *
****************************************/
@ -1981,15 +2040,19 @@ cms !defined($1)| X_CXREG |
remove(ALL)
"call .cms"
erase(cx) | cx | |
cmf $1==4 | |
remove(ALL)
"call .cmf4" | | |
cmf $1==8 | |
remove(ALL)
"call .cmf8" | | |
cmf !defined($1) | X_CXREG |
remove(ALL)
"call .cmf" erase(%[1]) | | |
/*
* Floating point
* Comparision
*/
cmf $1==4 | | remove(ALL) | | cal ".cmf4" asp 8 lfr 2 |
cmf $1==8 | | remove(ALL) | | cal ".cmf8" asp 16 lfr 2 |
/*
* Floating Point
* Zero Constants
*/
zrf | | | | zer $1 |
/* The costs with cmp are the cost of the 8086 cmp instruction */
cmp | NO register rmorconst |