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support for long strings

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This commit is contained in:
ceriel 1990-08-01 14:30:45 +00:00
parent f4e1a15dfb
commit e0ff37aa6e
7 changed files with 91 additions and 110 deletions
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5
mach/proto/as/comm1.h
View file

@ -58,8 +58,8 @@ extern char temppath[50];
extern FILE *input;
extern FILE *tempfile;
extern char stringbuf[STRINGMAX];
/* contains last string value */
extern char *stringbuf; /* contains last string value */
extern int stringlen; /* contains length of last string value */
extern sect_t sect[SECTMAX];
@ -116,6 +116,7 @@ extern FILE *fftemp();
extern long atol();
extern char *mktemp();
extern char *malloc();
extern char *realloc();
extern char *calloc();
extern char *getenv();
extern char *strncpy();

12
mach/proto/as/comm2.y
View file

@ -128,7 +128,7 @@ program : /* empty */
{ lineno++; LISTLINE(1); RELODONE;}
| program '#' NUMBER STRING '\n'
{ lineno = $3;
if (modulename) strncpy(modulename, &stringbuf[1], STRINGMAX-1);
if (modulename) strncpy(modulename, stringbuf, STRINGMAX-1);
LISTLINE(1); RELODONE;
}
| program error '\n'
@ -196,7 +196,7 @@ operation
#endif
newsymb(
*(stringbuf+1) ? stringbuf+1 : (char *) 0,
*stringbuf ? stringbuf : (char *) 0,
(short)(
($4.typ & (S_EXT|S_TYP))
|
@ -210,7 +210,7 @@ operation
| SYMD STRING ',' absexp ',' absexp
{ if ((sflag & SYM_SMB) && PASS_SYMB) {
newsymb(
*(stringbuf+1) ? stringbuf+1 : (char *) 0,
*stringbuf ? stringbuf : (char *) 0,
(short)(
(DOTTYP & (S_EXT|S_TYP))
|
@ -239,7 +239,7 @@ operation
{ if ((sflag & SYM_LIN) && PASS_SYMB) {
hllino = 0;
newsymb(
stringbuf+1,
stringbuf,
(short)(DOTTYP | S_FIL),
(short)0,
(valu_t)DOTVAL
@ -295,9 +295,9 @@ expr : error
$$.typ = $1->i_type & ~S_EXT;
}
| STRING
{ if (stringbuf[0] != 1)
{ if (stringlen != 1)
serror("too many chars");
$$.val = stringbuf[1];
$$.val = stringbuf[0];
$$.typ = S_ABS;
}
| ASC_LPAR expr ASC_RPAR

42
mach/proto/as/comm5.c
View file

@ -105,8 +105,23 @@ putval(c)
p = (char *) &yylval.y_strp; break;
#endif
case STRING:
v = stringlen;
putc(c-128, tempfile);
for (n = 0; n < sizeof(v); n++) {
if (v == 0)
break;
v >>= 8;
}
c = NUMBER0 + n;
putc(c-128, tempfile);
v = stringlen;
while (--n >= 0)
putc((int) (v >> (n*8)), tempfile);
p = stringbuf;
n = (*p & 0377) + 1; break;
n = stringlen;
while (--n >= 0)
putc(*p++, tempfile);
return;
case OP_EQ:
case OP_NE:
case OP_LE:
@ -166,8 +181,10 @@ getval(c)
p = (char *) &yylval.y_strp; break;
#endif
case STRING:
getval(getc(tempfile)+128);
stringlen = n = yylval.y_valu;
p = stringbuf;
*p++ = n = getc(tempfile); p[n] = '\0'; break;
p[n] = '\0'; break;
case OP_EQ:
case OP_NE:
case OP_LE:
@ -346,8 +363,15 @@ instring(termc)
{
register char *p;
register c;
static int maxstring = 0;
p = stringbuf+1;
if (! maxstring) {
maxstring = STRINGMAX;
if ((stringbuf = malloc(maxstring)) == 0) {
fatal("out of memory");
}
}
p = stringbuf;
for (;;) {
c = nextchar();
if (c == '\n' || c == '\0') {
@ -359,11 +383,17 @@ instring(termc)
break;
if (c == '\\')
c = inescape();
if (p >= &stringbuf[STRINGMAX - 1])
fatal("string buffer overflow");
if (p >= &stringbuf[maxstring - 1]) {
int cnt = p - stringbuf;
if ((stringbuf = realloc(stringbuf, maxstring += 256)) == 0) {
fatal("out of memory");
}
p = stringbuf + cnt;
}
*p++ = c;
}
stringbuf[0] = p - stringbuf - 1;
stringlen = p - stringbuf;
*p = '\0';
return(STRING);
}

2
mach/proto/as/comm7.c
View file

@ -306,7 +306,7 @@ emitstr(zero)
register char *p;
p = stringbuf;
i = *p++ & 0377;
i = stringlen;
while (--i >= 0)
emit1(*p++);
if (zero)

42
modules/src/read_em/read_em.c
View file

@ -18,6 +18,7 @@
*/
#include <assert.h>
#include <alloc.h>
#include <system.h>
#include <em_label.h>
#include <em_arith.h>
@ -60,29 +61,21 @@ _fill()
}
}
#define STRSIZ 256 /* Maximum length of strings */
static struct e_instr *emhead; /* Where we put the head */
static struct e_instr aheads[3];
static int ahead;
static struct string {
int length;
char str[STRSIZ + 1];
unsigned int maxlen;
char *str;
} string;
#ifdef COMPACT
static arith strleft; /* count # of chars left to read
in a string
*/
#endif
static int state; /* What state are we in? */
#define CON 01 /* Reading a CON */
#define ROM 02 /* Reading a ROM */
#define MES 03 /* Reading a MES */
#define PSEUMASK 03
#define INSTRING 010 /* Reading a string */
static int EM_initialized; /* EM_open called? */
@ -399,35 +392,6 @@ EM_getinstr(p)
return EM_error == 0;
}
if (state & INSTRING) { /* We already delivered part of a string.
Deliver the next part
*/
register struct string *s;
s = getstring(0);
p->em_argtype = str_ptyp;
p->em_string = s->str;
p->em_size = s->length;
switch(state & PSEUMASK) {
default:
assert(0);
case MES:
if (!EM_error)
EM_error = "String too long in message";
p->em_type = EM_MESARG;
break;
case CON:
p->em_type = EM_PSEU;
p->em_opcode = ps_con;
break;
case ROM:
p->em_type = EM_PSEU;
p->em_opcode = ps_rom;
break;
}
return EM_error == 0;
}
/* Here, we are in a state reading arguments */
getarg(any_ptyp, &(p->em_arg));
if (EM_error && p->em_type != EM_FATAL) {

46
modules/src/read_em/reade.c
View file

@ -3,7 +3,7 @@
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* This file is ment to be included in the file read_emeV.c.
/* This file is ment to be included in the file read_em.c.
It contains the part that takes care of the reading of human readable
EM-code.
*/
@ -171,6 +171,10 @@ getname()
s = &string;
p = s->str;
if (!p) {
s->maxlen = 256;
s->str = p = Malloc(256);
}
c = getbyte();
if (!(isalpha(c) || c == '_')) {
@ -180,7 +184,12 @@ getname()
}
while (isalnum(c) || c == '_') {
if (p < &(s->str[STRSIZ])) *p++ = c;
if (p >= &(s->str[s->maxlen])) {
int df = p - s->str;
s->str = Realloc(s->str, (s->maxlen += 256));
p = s->str + df;
}
*p++ = c;
c = getbyte();
}
@ -202,16 +211,18 @@ getstring()
s = &string;
p = s->str;
if (!(state & INSTRING)) { /* Not reading a string yet */
termc = getbyte();
/* assert(termc == '"' || termc == '\''); */
/* This assertion does not work. Compiler error messages.
The trouble lies in the ", it terminates the string
created in the assertion macro
*/
if (!p) {
s->maxlen = 256;
s->str = p = Malloc(256);
}
termc = getbyte();
/* assert(termc == '"' || termc == '\''); */
/* This assertion does not work. Compiler error messages.
The trouble lies in the ", it terminates the string
created in the assertion macro
*/
for (;;) {
if ((c = getbyte()) == '\n' || c == EOF) {
ungetbyte(c);
@ -221,16 +232,15 @@ getstring()
if (c == termc) {
if (termc == '"') *p++ = '\0';
state &= ~INSTRING;
break;
}
if (c == '\\') c = getescape();
if (p >= &(s->str[STRSIZ])) {
state |= INSTRING;
ungetbyte(c);
break;
if (p >= &(s->str[s->maxlen])) {
int df = p - s->str;
s->str = Realloc(s->str, (s->maxlen += 256));
p = s->str + df;
}
*p++ = c;
@ -268,7 +278,7 @@ getnumber(c, ap)
register int c;
register struct e_arg *ap;
{
char str[STRSIZ + 1];
char str[256 + 1];
register char *p = str;
int n;
int expsign;
@ -291,7 +301,7 @@ getnumber(c, ap)
n = sp_cst4;
for (;;) {
if (p >= &(str[STRSIZ])) {
if (p >= &(str[256])) {
syntax("number too long");
return sp_cst4;
}
@ -580,7 +590,7 @@ getmnem(c, p)
PRIVATE
line_line()
{
static char filebuf[STRSIZ + 1];
static char filebuf[256 + 1];
char *btscpy();
struct e_arg dummy;

52
modules/src/read_em/readk.c
View file

@ -109,11 +109,6 @@ getarg(typset, ap)
register struct string *p;
p = getstring(1);
#ifdef CHECKING
if (state & INSTRING) {
xerror("Procedure name too long");
}
#endif CHECKING
ap->ema_pnam = p->str;
ap->ema_argtype = pro_ptyp;
break;
@ -124,11 +119,6 @@ getarg(typset, ap)
register struct string *p;
p = getstring(1);
#ifdef CHECKING
if (state & INSTRING) {
xerror("Data label too long");
}
#endif CHECKING
ap->ema_dnam = p->str;
ap->ema_szoroff = 0;
ap->ema_argtype = sof_ptyp;
@ -154,11 +144,6 @@ getarg(typset, ap)
getarg(cst_ptyp, ap);
ap->ema_szoroff = ap->ema_cst;
p = getstring(0);
#ifdef CHECKING
if (state & INSTRING) {
xerror("Numeric constant too long");
}
#endif CHECKING
ap->ema_argtype = ptyp(i);
ap->ema_string = p->str;
break;
@ -226,8 +211,7 @@ checkident(s)
}
#endif CHECKING
/* getstring: read a string from the input, but at most STRSIZ characters
of it. The next characters will be read another time around
/* getstring: read a string from the input
*/
/*ARGSUSED*/
PRIVATE struct string *
@ -236,32 +220,24 @@ getstring(isident)
register char *p;
register int n;
register struct string *s = &string;
struct e_arg dummy;
if (!(state & INSTRING)) { /* Not reading a string yet */
struct e_arg dummy;
getarg(cst_ptyp, &dummy);
getarg(cst_ptyp, &dummy);
/* Read length of string */
strleft = dummy.ema_cst;
n = dummy.ema_cst;
#ifdef CHECKING
if (strleft < 0) {
xerror("Negative length in string");
s->length = 0;
return s;
}
if (n < 0) {
xerror("Negative length in string");
s->length = 0;
return s;
}
#endif CHECKING
}
if (strleft <= STRSIZ) { /* Handle the whole string */
n = strleft;
state &= ~INSTRING;
}
else { /* Handle STRSIZ characters of it, and
indicate that there is more
*/
n = STRSIZ;
strleft -= STRSIZ;
state |= INSTRING;
if (n > s->maxlen) {
if (! s->maxlen) {
s->str = Malloc(s->maxlen = 256);
}
else s->str = Realloc(s->str, (s->maxlen = (n+255)&~255));
}
s->length = n;