#endif
/*
- * Types used in bitwise operations.
- *
- * Normally we'd just use IV and UV. However, some hardware and
- * software combinations (e.g. Alpha and current OSF/1) don't have a
- * floating-point type to use for NV that has adequate bits to fully
- * hold an IV/UV. (In other words, sizeof(long) == sizeof(double).)
- *
- * It just so happens that "int" is the right size almost everywhere.
- */
-typedef int IBW;
-typedef unsigned UBW;
-
-/*
- * Mask used after bitwise operations.
- *
- * There is at least one realm (Cray word machines) that doesn't
- * have an integral type (except char) small enough to be represented
- * in a double without loss; that is, it has no 32-bit type.
- */
-#if LONGSIZE > 4 && defined(_CRAY) && !defined(_CRAYMPP)
-# define BW_BITS 32
-# define BW_MASK ((1 << BW_BITS) - 1)
-# define BW_SIGN (1 << (BW_BITS - 1))
-# define BWi(i) (((i) & BW_SIGN) ? ((i) | ~BW_MASK) : ((i) & BW_MASK))
-# define BWu(u) ((u) & BW_MASK)
-#else
-# define BWi(i) (i)
-# define BWu(u) (u)
-#endif
-
-/*
* Offset for integer pack/unpack.
*
* On architectures where I16 and I32 aren't really 16 and 32 bits,
if (cv) {
if (CvCLONE(cv))
cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
+ if ((PL_op->op_private & OPpLVAL_INTRO) && !CvLVALUE(cv))
+ Perl_croak(aTHX_ "Can't modify non-lvalue subroutine call");
}
else
cv = (CV*)&PL_sv_undef;
{
djSP; dATARGET; tryAMAGICbin(lshift,opASSIGN);
{
- IBW shift = POPi;
- if (PL_op->op_private & HINT_INTEGER) {
- IBW i = TOPi;
- i = BWi(i) << shift;
- SETi(BWi(i));
- }
- else {
- UBW u = TOPu;
- u <<= shift;
- SETu(BWu(u));
- }
+ IV shift = POPi;
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi(TOPi << shift);
+ else
+ SETu(TOPu << shift);
RETURN;
}
}
{
djSP; dATARGET; tryAMAGICbin(rshift,opASSIGN);
{
- IBW shift = POPi;
- if (PL_op->op_private & HINT_INTEGER) {
- IBW i = TOPi;
- i = BWi(i) >> shift;
- SETi(BWi(i));
- }
- else {
- UBW u = TOPu;
- u >>= shift;
- SETu(BWu(u));
- }
+ IV shift = POPi;
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi(TOPi >> shift);
+ else
+ SETu(TOPu >> shift);
RETURN;
}
}
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- if (PL_op->op_private & HINT_INTEGER) {
- IBW value = SvIV(left) & SvIV(right);
- SETi(BWi(value));
- }
- else {
- UBW value = SvUV(left) & SvUV(right);
- SETu(BWu(value));
- }
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi( SvIV(left) & SvIV(right) );
+ else
+ SETu( SvUV(left) & SvUV(right) );
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- if (PL_op->op_private & HINT_INTEGER) {
- IBW value = (USE_LEFT(left) ? SvIV(left) : 0) ^ SvIV(right);
- SETi(BWi(value));
- }
- else {
- UBW value = (USE_LEFT(left) ? SvUV(left) : 0) ^ SvUV(right);
- SETu(BWu(value));
- }
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi( (USE_LEFT(left) ? SvIV(left) : 0) ^ SvIV(right) );
+ else
+ SETu( (USE_LEFT(left) ? SvUV(left) : 0) ^ SvUV(right) );
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- if (PL_op->op_private & HINT_INTEGER) {
- IBW value = (USE_LEFT(left) ? SvIV(left) : 0) | SvIV(right);
- SETi(BWi(value));
- }
- else {
- UBW value = (USE_LEFT(left) ? SvUV(left) : 0) | SvUV(right);
- SETu(BWu(value));
- }
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi( (USE_LEFT(left) ? SvIV(left) : 0) | SvIV(right) );
+ else
+ SETu( (USE_LEFT(left) ? SvUV(left) : 0) | SvUV(right) );
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dTOPss;
if (SvNIOKp(sv)) {
- if (PL_op->op_private & HINT_INTEGER) {
- IBW value = ~SvIV(sv);
- SETi(BWi(value));
- }
- else {
- UBW value = ~SvUV(sv);
- SETu(BWu(value));
- }
+ if (PL_op->op_private & HINT_INTEGER)
+ SETi( ~SvIV(sv) );
+ else
+ SETu( ~SvUV(sv) );
}
else {
register char *tmps;
register I32 offset = POPi;
register SV *src = POPs;
I32 lvalue = PL_op->op_flags & OPf_MOD;
- STRLEN srclen;
- unsigned char *s = (unsigned char*)SvPV(src, srclen);
- unsigned long retnum;
- I32 len;
-
- SvTAINTED_off(TARG); /* decontaminate */
- offset *= size; /* turn into bit offset */
- len = (offset + size + 7) / 8;
- if (offset < 0 || size < 1)
- retnum = 0;
- else {
- if (lvalue) { /* it's an lvalue! */
- if (SvTYPE(TARG) < SVt_PVLV) {
- sv_upgrade(TARG, SVt_PVLV);
- sv_magic(TARG, Nullsv, 'v', Nullch, 0);
- }
- LvTYPE(TARG) = 'v';
- if (LvTARG(TARG) != src) {
- if (LvTARG(TARG))
- SvREFCNT_dec(LvTARG(TARG));
- LvTARG(TARG) = SvREFCNT_inc(src);
- }
- LvTARGOFF(TARG) = offset;
- LvTARGLEN(TARG) = size;
- }
- if (len > srclen) {
- if (size <= 8)
- retnum = 0;
- else {
- offset >>= 3;
- if (size == 16) {
- if (offset >= srclen)
- retnum = 0;
- else
- retnum = (unsigned long) s[offset] << 8;
- }
- else if (size == 32) {
- if (offset >= srclen)
- retnum = 0;
- else if (offset + 1 >= srclen)
- retnum = (unsigned long) s[offset] << 24;
- else if (offset + 2 >= srclen)
- retnum = ((unsigned long) s[offset] << 24) +
- ((unsigned long) s[offset + 1] << 16);
- else
- retnum = ((unsigned long) s[offset] << 24) +
- ((unsigned long) s[offset + 1] << 16) +
- (s[offset + 2] << 8);
- }
- }
+ SvTAINTED_off(TARG); /* decontaminate */
+ if (lvalue) { /* it's an lvalue! */
+ if (SvTYPE(TARG) < SVt_PVLV) {
+ sv_upgrade(TARG, SVt_PVLV);
+ sv_magic(TARG, Nullsv, 'v', Nullch, 0);
}
- else if (size < 8)
- retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
- else {
- offset >>= 3;
- if (size == 8)
- retnum = s[offset];
- else if (size == 16)
- retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
- else if (size == 32)
- retnum = ((unsigned long) s[offset] << 24) +
- ((unsigned long) s[offset + 1] << 16) +
- (s[offset + 2] << 8) + s[offset+3];
+ LvTYPE(TARG) = 'v';
+ if (LvTARG(TARG) != src) {
+ if (LvTARG(TARG))
+ SvREFCNT_dec(LvTARG(TARG));
+ LvTARG(TARG) = SvREFCNT_inc(src);
}
+ LvTARGOFF(TARG) = offset;
+ LvTARGLEN(TARG) = size;
}
- sv_setuv(TARG, (UV)retnum);
+ sv_setuv(TARG, do_vecget(src, offset, size));
PUSHs(TARG);
RETURN;
}
}
else if (isDIGIT(*pat)) {
len = *pat++ - '0';
- while (isDIGIT(*pat))
+ while (isDIGIT(*pat)) {
len = (len * 10) + (*pat++ - '0');
+ if (len < 0)
+ Perl_croak(aTHX_ "Repeat count in unpack overflows");
+ }
}
else
len = (datumtype != '@');
if (checksum) {
#if SHORTSIZE != SIZE16
if (natint) {
+ short ashort;
while (len-- > 0) {
COPYNN(s, &ashort, sizeof(short));
s += sizeof(short);
EXTEND_MORTAL(len);
#if SHORTSIZE != SIZE16
if (natint) {
+ short ashort;
while (len-- > 0) {
COPYNN(s, &ashort, sizeof(short));
s += sizeof(short);
if (checksum) {
#if SHORTSIZE != SIZE16
if (unatint) {
+ unsigned short aushort;
while (len-- > 0) {
COPYNN(s, &aushort, sizeof(unsigned short));
s += sizeof(unsigned short);
EXTEND_MORTAL(len);
#if SHORTSIZE != SIZE16
if (unatint) {
+ unsigned short aushort;
while (len-- > 0) {
COPYNN(s, &aushort, sizeof(unsigned short));
s += sizeof(unsigned short);
if (checksum) {
#if LONGSIZE != SIZE32
if (natint) {
+ long along;
while (len-- > 0) {
COPYNN(s, &along, sizeof(long));
s += sizeof(long);
EXTEND_MORTAL(len);
#if LONGSIZE != SIZE32
if (natint) {
+ long along;
while (len-- > 0) {
COPYNN(s, &along, sizeof(long));
s += sizeof(long);
if (checksum) {
#if LONGSIZE != SIZE32
if (unatint) {
+ unsigned long aulong;
while (len-- > 0) {
COPYNN(s, &aulong, sizeof(unsigned long));
s += sizeof(unsigned long);
EXTEND_MORTAL(len);
#if LONGSIZE != SIZE32
if (unatint) {
+ unsigned long aulong;
while (len-- > 0) {
COPYNN(s, &aulong, sizeof(unsigned long));
s += sizeof(unsigned long);
}
else if (isDIGIT(*pat)) {
len = *pat++ - '0';
- while (isDIGIT(*pat))
+ while (isDIGIT(*pat)) {
len = (len * 10) + (*pat++ - '0');
+ if (len < 0)
+ Perl_croak(aTHX_ "Repeat count in pack overflows");
+ }
}
else
len = 1;
case 's':
#if SHORTSIZE != SIZE16
if (natint) {
+ short ashort;
+
while (len-- > 0) {
fromstr = NEXTFROM;
ashort = SvIV(fromstr);
case 'L':
#if LONGSIZE != SIZE32
if (natint) {
+ unsigned long aulong;
+
while (len-- > 0) {
fromstr = NEXTFROM;
aulong = SvUV(fromstr);
case 'l':
#if LONGSIZE != SIZE32
if (natint) {
+ long along;
+
while (len-- > 0) {
fromstr = NEXTFROM;
along = SvIV(fromstr);
case 'Q':
while (len-- > 0) {
fromstr = NEXTFROM;
- auquad = (Uquad_t)SvIV(fromstr);
+ auquad = (Uquad_t)SvUV(fromstr);
sv_catpvn(cat, (char*)&auquad, sizeof(Uquad_t));
}
break;
projects / p5sagit/p5-mst-13.2.git / blobdiff