#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);
{
- IV shift = POPi;
- if (PL_op->op_private & HINT_INTEGER)
- SETi(TOPi << shift);
- else
- SETu(TOPu << shift);
+ 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));
+ }
RETURN;
}
}
{
djSP; dATARGET; tryAMAGICbin(rshift,opASSIGN);
{
- IV shift = POPi;
- if (PL_op->op_private & HINT_INTEGER)
- SETi(TOPi >> shift);
- else
- SETu(TOPu >> shift);
+ 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));
+ }
RETURN;
}
}
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- if (PL_op->op_private & HINT_INTEGER)
- SETi( SvIV(left) & SvIV(right) );
- else
- SETu( SvUV(left) & SvUV(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));
+ }
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- 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) );
+ 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));
+ }
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dPOPTOPssrl;
if (SvNIOKp(left) || SvNIOKp(right)) {
- 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) );
+ 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));
+ }
}
else {
do_vop(PL_op->op_type, TARG, left, right);
{
dTOPss;
if (SvNIOKp(sv)) {
- if (PL_op->op_private & HINT_INTEGER)
- SETi( ~SvIV(sv) );
- else
- SETu( ~SvUV(sv) );
+ if (PL_op->op_private & HINT_INTEGER) {
+ IBW value = ~SvIV(sv);
+ SETi(BWi(value));
+ }
+ else {
+ UBW value = ~SvUV(sv);
+ SETu(BWu(value));
+ }
}
else {
register char *tmps;
# endif
#endif
u += SEED_C3 * (U32)getpid();
- u += SEED_C4 * (U32)(UV)PL_stack_sp;
+ u += SEED_C4 * (U32)PTR2UV(PL_stack_sp);
#ifndef PLAN9 /* XXX Plan9 assembler chokes on this; fix needed */
- u += SEED_C5 * (U32)(UV)&when;
+ u += SEED_C5 * (U32)PTR2UV(&when);
#endif
return u;
}
else {
if (!AvREAL(ary)) {
AvREAL_on(ary);
+ AvREIFY_off(ary);
for (i = AvFILLp(ary); i >= 0; i--)
AvARRAY(ary)[i] = &PL_sv_undef; /* don't free mere refs */
}