+#define PERL_NO_GET_CONTEXT
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
-/* maxo shouldn't differ from MAXO but leave room anyway (see BOOT:) */
+/* PL_maxo shouldn't differ from MAXO but leave room anyway (see BOOT:) */
#define OP_MASK_BUF_SIZE (MAXO + 100)
+/* XXX op_named_bits and opset_all are never freed */
static HV *op_named_bits; /* cache shared for whole process */
static SV *opset_all; /* mask with all bits set */
static IV opset_len; /* length of opmasks in bytes */
static int opcode_debug = 0;
-static SV *new_opset _((SV *old_opset));
-static int verify_opset _((SV *opset, int fatal));
-static void set_opset_bits _((char *bitmap, SV *bitspec, int on, char *opname));
-static void put_op_bitspec _((char *optag, STRLEN len, SV *opset));
-static SV *get_op_bitspec _((char *opname, STRLEN len, int fatal));
+static SV *new_opset (pTHX_ SV *old_opset);
+static int verify_opset (pTHX_ SV *opset, int fatal);
+static void set_opset_bits (pTHX_ char *bitmap, SV *bitspec, int on, char *opname);
+static void put_op_bitspec (pTHX_ char *optag, STRLEN len, SV *opset);
+static SV *get_op_bitspec (pTHX_ char *opname, STRLEN len, int fatal);
/* Initialise our private op_named_bits HV.
* It is first loaded with the name and number of each perl operator.
* Then the builtin tags :none and :all are added.
* Opcode.pm loads the standard optags from __DATA__
+ * XXX leak-alert: data allocated here is never freed, call this
+ * at most once
*/
static void
-op_names_init(void)
+op_names_init(pTHX)
{
int i;
STRLEN len;
op_named_bits = newHV();
op_names = get_op_names();
- for(i=0; i < maxo; ++i) {
+ for(i=0; i < PL_maxo; ++i) {
SV *sv;
sv = newSViv(i);
SvREADONLY_on(sv);
hv_store(op_named_bits, op_names[i], strlen(op_names[i]), sv, 0);
}
- put_op_bitspec(":none",0, sv_2mortal(new_opset(Nullsv)));
+ put_op_bitspec(aTHX_ ":none",0, sv_2mortal(new_opset(aTHX_ Nullsv)));
- opset_all = new_opset(Nullsv);
+ opset_all = new_opset(aTHX_ Nullsv);
bitmap = SvPV(opset_all, len);
i = len-1; /* deal with last byte specially, see below */
while(i-- > 0)
bitmap[i] = 0xFF;
/* Take care to set the right number of bits in the last byte */
- bitmap[len-1] = (maxo & 0x07) ? ~(0xFF << (maxo & 0x07)) : 0xFF;
- put_op_bitspec(":all",0, opset_all); /* don't mortalise */
+ bitmap[len-1] = (PL_maxo & 0x07) ? ~(0xFF << (PL_maxo & 0x07)) : 0xFF;
+ put_op_bitspec(aTHX_ ":all",0, opset_all); /* don't mortalise */
}
*/
static void
-put_op_bitspec(char *optag, STRLEN len, SV *mask)
+put_op_bitspec(pTHX_ char *optag, STRLEN len, SV *mask)
{
SV **svp;
- verify_opset(mask,1);
+ verify_opset(aTHX_ mask,1);
if (!len)
len = strlen(optag);
svp = hv_fetch(op_named_bits, optag, len, 1);
*/
static SV *
-get_op_bitspec(char *opname, STRLEN len, int fatal)
+get_op_bitspec(pTHX_ char *opname, STRLEN len, int fatal)
{
SV **svp;
if (!len)
static SV *
-new_opset(SV *old_opset)
+new_opset(pTHX_ SV *old_opset)
{
SV *opset;
if (old_opset) {
- verify_opset(old_opset,1);
+ verify_opset(aTHX_ old_opset,1);
opset = newSVsv(old_opset);
}
else {
static int
-verify_opset(SV *opset, int fatal)
+verify_opset(pTHX_ SV *opset, int fatal)
{
char *err = Nullch;
if (!SvOK(opset)) err = "undefined";
static void
-set_opset_bits(char *bitmap, SV *bitspec, int on, char *opname)
+set_opset_bits(pTHX_ char *bitmap, SV *bitspec, int on, char *opname)
{
if (SvIOK(bitspec)) {
int myopcode = SvIV(bitspec);
int offset = myopcode >> 3;
int bit = myopcode & 0x07;
- if (myopcode >= maxo || myopcode < 0)
+ if (myopcode >= PL_maxo || myopcode < 0)
croak("panic: opcode \"%s\" value %d is invalid", opname, myopcode);
if (opcode_debug >= 2)
warn("set_opset_bits bit %2d (off=%d, bit=%d) %s %s\n",
static void
-opmask_add(SV *opset) /* THE ONLY FUNCTION TO EDIT op_mask ITSELF */
+opmask_add(pTHX_ SV *opset) /* THE ONLY FUNCTION TO EDIT PL_op_mask ITSELF */
{
int i,j;
char *bitmask;
STRLEN len;
int myopcode = 0;
- verify_opset(opset,1); /* croaks on bad opset */
+ verify_opset(aTHX_ opset,1); /* croaks on bad opset */
- if (!op_mask) /* caller must ensure op_mask exists */
- croak("Can't add to uninitialised op_mask");
+ if (!PL_op_mask) /* caller must ensure PL_op_mask exists */
+ croak("Can't add to uninitialised PL_op_mask");
/* OPCODES ALREADY MASKED ARE NEVER UNMASKED. See opmask_addlocal() */
myopcode += 8;
continue;
}
- for (j=0; j < 8 && myopcode < maxo; )
- op_mask[myopcode++] |= bits & (1 << j++);
+ for (j=0; j < 8 && myopcode < PL_maxo; )
+ PL_op_mask[myopcode++] |= bits & (1 << j++);
}
}
static void
-opmask_addlocal(SV *opset, char *op_mask_buf) /* Localise op_mask then opmask_add() */
+opmask_addlocal(pTHX_ SV *opset, char *op_mask_buf) /* Localise PL_op_mask then opmask_add() */
{
- char *orig_op_mask = op_mask;
- SAVEPPTR(op_mask);
+ char *orig_op_mask = PL_op_mask;
+ SAVEVPTR(PL_op_mask);
+#if !defined(PERL_OBJECT)
+ /* XXX casting to an ordinary function ptr from a member function ptr
+ * is disallowed by Borland
+ */
if (opcode_debug >= 2)
- SAVEDESTRUCTOR((void(CPERLscope(*))_((void*)))warn,"op_mask restored");
- op_mask = &op_mask_buf[0];
+ SAVEDESTRUCTOR((void(*)(void*))Perl_warn,"PL_op_mask restored");
+#endif
+ PL_op_mask = &op_mask_buf[0];
if (orig_op_mask)
- Copy(orig_op_mask, op_mask, maxo, char);
+ Copy(orig_op_mask, PL_op_mask, PL_maxo, char);
else
- Zero(op_mask, maxo, char);
- opmask_add(opset);
+ Zero(PL_op_mask, PL_maxo, char);
+ opmask_add(aTHX_ opset);
}
PROTOTYPES: ENABLE
BOOT:
- assert(maxo < OP_MASK_BUF_SIZE);
- opset_len = (maxo + 7) / 8;
+ assert(PL_maxo < OP_MASK_BUF_SIZE);
+ opset_len = (PL_maxo + 7) / 8;
if (opcode_debug >= 1)
warn("opset_len %ld\n", (long)opset_len);
- op_names_init();
+ op_names_init(aTHX);
+
+void
+_safe_pkg_prep(Package)
+ char * Package
+PPCODE:
+ HV *hv;
+ ENTER;
+
+ hv = gv_stashpv(Package, GV_ADDWARN); /* should exist already */
+
+ if (strNE(HvNAME(hv),"main")) {
+ Safefree(HvNAME(hv));
+ HvNAME(hv) = savepv("main"); /* make it think it's in main:: */
+ hv_store(hv,"_",1,(SV *)PL_defgv,0); /* connect _ to global */
+ SvREFCNT_inc((SV *)PL_defgv); /* want to keep _ around! */
+ }
+ LEAVE;
+
+
+
void
char * Package
SV * mask
SV * codesv
- PPCODE:
+PPCODE:
char op_mask_buf[OP_MASK_BUF_SIZE];
GV *gv;
ENTER;
- opmask_addlocal(mask, op_mask_buf);
+ opmask_addlocal(aTHX_ mask, op_mask_buf);
- save_aptr(&endav);
- endav = (AV*)sv_2mortal((SV*)newAV()); /* ignore END blocks for now */
+ save_aptr(&PL_endav);
+ PL_endav = (AV*)sv_2mortal((SV*)newAV()); /* ignore END blocks for now */
- save_hptr(&defstash); /* save current default stack */
+ save_hptr(&PL_defstash); /* save current default stash */
/* the assignment to global defstash changes our sense of 'main' */
- defstash = gv_stashpv(Package, GV_ADDWARN); /* should exist already */
+ PL_defstash = gv_stashpv(Package, GV_ADDWARN); /* should exist already */
+
+ save_hptr(&PL_curstash);
+ PL_curstash = PL_defstash;
/* defstash must itself contain a main:: so we'll add that now */
/* take care with the ref counts (was cause of long standing bug) */
/* XXX I'm still not sure if this is right, GV_ADDWARN should warn! */
gv = gv_fetchpv("main::", GV_ADDWARN, SVt_PVHV);
sv_free((SV*)GvHV(gv));
- GvHV(gv) = (HV*)SvREFCNT_inc(defstash);
+ GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
- PUSHMARK(sp);
+ /* %INC must be clean for use/require in compartment */
+ save_hash(PL_incgv);
+ sv_free((SV*)GvHV(PL_incgv)); /* get rid of what save_hash gave us*/
+ GvHV(PL_incgv) = (HV*)SvREFCNT_inc(GvHV(gv_HVadd(gv_fetchpv("INC",TRUE,SVt_PVHV))));
+
+ PUSHMARK(SP);
perl_call_sv(codesv, GIMME|G_EVAL|G_KEEPERR); /* use callers context */
SPAGAIN; /* for the PUTBACK added by xsubpp */
LEAVE;
verify_opset(opset, fatal = 0)
SV *opset
int fatal
-
+CODE:
+ RETVAL = verify_opset(aTHX_ opset,fatal);
+OUTPUT:
+ RETVAL
void
invert_opset(opset)
SV *opset
- CODE:
+CODE:
{
char *bitmap;
STRLEN len = opset_len;
- opset = new_opset(opset); /* verify and clone opset */
+ opset = sv_2mortal(new_opset(aTHX_ opset)); /* verify and clone opset */
bitmap = SvPVX(opset);
while(len-- > 0)
bitmap[len] = ~bitmap[len];
- /* take care of extra bits beyond maxo in last byte */
- if (maxo & 07)
- bitmap[opset_len-1] &= ~(0xFF << (maxo & 0x07));
+ /* take care of extra bits beyond PL_maxo in last byte */
+ if (PL_maxo & 07)
+ bitmap[opset_len-1] &= ~(0xFF << (PL_maxo & 0x07));
}
ST(0) = opset;
opset_to_ops(opset, desc = 0)
SV *opset
int desc
- PPCODE:
+PPCODE:
{
STRLEN len;
int i, j, myopcode;
char *bitmap = SvPV(opset, len);
char **names = (desc) ? get_op_descs() : get_op_names();
- verify_opset(opset,1);
+ verify_opset(aTHX_ opset,1);
for (myopcode=0, i=0; i < opset_len; i++) {
U16 bits = bitmap[i];
- for (j=0; j < 8 && myopcode < maxo; j++, myopcode++) {
+ for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++) {
if ( bits & (1 << j) )
XPUSHs(sv_2mortal(newSVpv(names[myopcode], 0)));
}
void
opset(...)
- CODE:
+CODE:
int i, j;
SV *bitspec, *opset;
char *bitmap;
STRLEN len, on;
- opset = new_opset(Nullsv);
+ opset = sv_2mortal(new_opset(aTHX_ Nullsv));
bitmap = SvPVX(opset);
for (i = 0; i < items; i++) {
char *opname;
on = 1;
- if (verify_opset(ST(i),0)) {
+ if (verify_opset(aTHX_ ST(i),0)) {
opname = "(opset)";
bitspec = ST(i);
}
else {
opname = SvPV(ST(i), len);
if (*opname == '!') { on=0; ++opname;--len; }
- bitspec = get_op_bitspec(opname, len, 1);
+ bitspec = get_op_bitspec(aTHX_ opname, len, 1);
}
- set_opset_bits(bitmap, bitspec, on, opname);
+ set_opset_bits(aTHX_ bitmap, bitspec, on, opname);
}
ST(0) = opset;
void
permit_only(safe, ...)
SV *safe
- ALIAS:
+ALIAS:
permit = 1
deny_only = 2
deny = 3
- CODE:
+CODE:
int i, on;
SV *bitspec, *mask;
char *bitmap, *opname;
croak("Not a Safe object");
mask = *hv_fetch((HV*)SvRV(safe), "Mask",4, 1);
if (ONLY_THESE) /* *_only = new mask, else edit current */
- sv_setsv(mask, new_opset(PERMITING ? opset_all : Nullsv));
- else verify_opset(mask,1); /* croaks */
+ sv_setsv(mask, sv_2mortal(new_opset(aTHX_ PERMITING ? opset_all : Nullsv)));
+ else
+ verify_opset(aTHX_ mask,1); /* croaks */
bitmap = SvPVX(mask);
for (i = 1; i < items; i++) {
on = PERMITING ? 0 : 1; /* deny = mask bit on */
- if (verify_opset(ST(i),0)) { /* it's a valid mask */
+ if (verify_opset(aTHX_ ST(i),0)) { /* it's a valid mask */
opname = "(opset)";
bitspec = ST(i);
}
opname = SvPV(ST(i), len);
/* invert if op has ! prefix (only one allowed) */
if (*opname == '!') { on = !on; ++opname; --len; }
- bitspec = get_op_bitspec(opname, len, 1); /* croaks */
+ bitspec = get_op_bitspec(aTHX_ opname, len, 1); /* croaks */
}
- set_opset_bits(bitmap, bitspec, on, opname);
+ set_opset_bits(aTHX_ bitmap, bitspec, on, opname);
}
- ST(0) = &sv_yes;
+ ST(0) = &PL_sv_yes;
void
opdesc(...)
- PPCODE:
+PPCODE:
int i, myopcode;
STRLEN len;
SV **args;
char **op_desc = get_op_descs();
/* copy args to a scratch area since we may push output values onto */
/* the stack faster than we read values off it if masks are used. */
- args = (SV**)SvPVX(sv_2mortal(newSVpv((char*)&ST(0), items*sizeof(SV*))));
+ args = (SV**)SvPVX(sv_2mortal(newSVpvn((char*)&ST(0), items*sizeof(SV*))));
for (i = 0; i < items; i++) {
char *opname = SvPV(args[i], len);
- SV *bitspec = get_op_bitspec(opname, len, 1);
+ SV *bitspec = get_op_bitspec(aTHX_ opname, len, 1);
if (SvIOK(bitspec)) {
myopcode = SvIV(bitspec);
- if (myopcode < 0 || myopcode >= maxo)
+ if (myopcode < 0 || myopcode >= PL_maxo)
croak("panic: opcode %d (%s) out of range",myopcode,opname);
XPUSHs(sv_2mortal(newSVpv(op_desc[myopcode], 0)));
}
else if (SvPOK(bitspec) && SvCUR(bitspec) == opset_len) {
int b, j;
- char *bitmap = SvPV(bitspec,na);
+ STRLEN n_a;
+ char *bitmap = SvPV(bitspec,n_a);
myopcode = 0;
for (b=0; b < opset_len; b++) {
U16 bits = bitmap[b];
- for (j=0; j < 8 && myopcode < maxo; j++, myopcode++)
+ for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++)
if (bits & (1 << j))
XPUSHs(sv_2mortal(newSVpv(op_desc[myopcode], 0)));
}
define_optag(optagsv, mask)
SV *optagsv
SV *mask
- CODE:
+CODE:
STRLEN len;
char *optag = SvPV(optagsv, len);
- put_op_bitspec(optag, len, mask); /* croaks */
- ST(0) = &sv_yes;
+ put_op_bitspec(aTHX_ optag, len, mask); /* croaks */
+ ST(0) = &PL_sv_yes;
void
empty_opset()
- CODE:
- ST(0) = sv_2mortal(new_opset(Nullsv));
+CODE:
+ ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv));
void
full_opset()
- CODE:
- ST(0) = sv_2mortal(new_opset(opset_all));
+CODE:
+ ST(0) = sv_2mortal(new_opset(aTHX_ opset_all));
void
opmask_add(opset)
SV *opset
- PREINIT:
- if (!op_mask)
- Newz(0, op_mask, maxo, char);
+PREINIT:
+ if (!PL_op_mask)
+ Newz(0, PL_op_mask, PL_maxo, char);
+CODE:
+ opmask_add(aTHX_ opset);
void
opcodes()
- PPCODE:
+PPCODE:
if (GIMME == G_ARRAY) {
croak("opcodes in list context not yet implemented"); /* XXX */
}
else {
- XPUSHs(sv_2mortal(newSViv(maxo)));
+ XPUSHs(sv_2mortal(newSViv(PL_maxo)));
}
void
opmask()
- CODE:
- ST(0) = sv_2mortal(new_opset(Nullsv));
- if (op_mask) {
+CODE:
+ ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv));
+ if (PL_op_mask) {
char *bitmap = SvPVX(ST(0));
int myopcode;
- for(myopcode=0; myopcode < maxo; ++myopcode) {
- if (op_mask[myopcode])
+ for(myopcode=0; myopcode < PL_maxo; ++myopcode) {
+ if (PL_op_mask[myopcode])
bitmap[myopcode >> 3] |= 1 << (myopcode & 0x07);
}
}
projects / p5sagit/p5-mst-13.2.git / blobdiff