--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/perl-5.22.2/os2/perlrexx.c	Sat May 14 14:54:38 2016 +0000
@@ -0,0 +1,320 @@
+#define INCL_DOSPROCESS
+#define INCL_DOSSEMAPHORES
+#define INCL_DOSMODULEMGR
+#define INCL_DOSMISC
+#define INCL_DOSEXCEPTIONS
+#define INCL_DOSERRORS
+#define INCL_REXXSAA
+#include <os2.h>
+
+/*
+ *      The Road goes ever on and on
+ *          Down from the door where it began.
+ *
+ *     [Bilbo on p.35 of _The Lord of the Rings_, I/i: "A Long-Expected Party"]
+ *     [Frodo on p.73 of _The Lord of the Rings_, I/iii: "Three Is Company"]
+ */
+
+#ifdef OEMVS
+#ifdef MYMALLOC
+/* sbrk is limited to first heap segement so make it big */
+#pragma runopts(HEAP(8M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON))
+#else
+#pragma runopts(HEAP(2M,500K,ANYWHERE,KEEP,8K,4K) STACK(,,ANY,) ALL31(ON))
+#endif
+#endif
+
+
+#include "EXTERN.h"
+#include "perl.h"
+
+static void xs_init (pTHX);
+static PerlInterpreter *my_perl;
+
+ULONG PERLEXPORTALL(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr);
+ULONG PERLDROPALL(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr);
+ULONG PERLDROPALLEXIT(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr);
+
+/* Register any extra external extensions */
+
+/* Do not delete this line--writemain depends on it */
+EXTERN_C void boot_DynaLoader (pTHX_ CV* cv);
+
+static void
+xs_init(pTHX)
+{
+    char *file = __FILE__;
+    dXSUB_SYS;
+        newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file);
+}
+
+int perlos2_is_inited;
+
+static void
+init_perlos2(void)
+{
+/*    static char *env[1] = {NULL};	*/
+
+    Perl_OS2_init3(0, 0, 0);
+}
+
+static int
+init_perl(int doparse)
+{
+    int exitstatus;
+    char *argv[3] = {"perl_in_REXX", "-e", ""};
+
+    if (!perlos2_is_inited) {
+	perlos2_is_inited = 1;
+	init_perlos2();
+    }
+    if (my_perl)
+	return 1;
+    if (!PL_do_undump) {
+	my_perl = perl_alloc();
+	if (!my_perl)
+	    return 0;
+	perl_construct(my_perl);
+	PL_perl_destruct_level = 1;
+    }
+    if (!doparse)
+        return 1;
+    exitstatus = perl_parse(my_perl, xs_init, 3, argv, (char **)NULL);
+    return !exitstatus;
+}
+
+static char last_error[4096];
+
+static int
+seterr(char *format, ...)
+{
+	va_list va;
+	char *s = last_error;
+
+	va_start(va, format);
+	if (s[0]) {
+	    s += strlen(s);
+	    if (s[-1] != '\n') {
+		snprintf(s, sizeof(last_error) - (s - last_error), "\n");
+		s += strlen(s);
+	    }
+	}
+	vsnprintf(s, sizeof(last_error) - (s - last_error), format, va);
+	return 1;
+}
+
+/* The REXX-callable entrypoints ... */
+
+ULONG PERL (PCSZ name, LONG rargc, const RXSTRING *rargv,
+                    PCSZ queuename, PRXSTRING retstr)
+{
+    int exitstatus;
+    char buf[256];
+    char *argv[3] = {"perl_from_REXX", "-e", buf};
+    ULONG ret;
+
+    if (rargc != 1)
+	return seterr("one argument expected, got %ld", rargc);
+    if (rargv[0].strlength >= sizeof(buf))
+	return seterr("length of the argument %ld exceeds the maximum %ld",
+		      rargv[0].strlength, (long)sizeof(buf) - 1);
+
+    if (!init_perl(0))
+	return 1;
+
+    memcpy(buf, rargv[0].strptr, rargv[0].strlength);
+    buf[rargv[0].strlength] = 0;
+    
+    exitstatus = perl_parse(my_perl, xs_init, 3, argv, (char **)NULL);
+    if (!exitstatus) {
+	exitstatus = perl_run(my_perl);
+    }
+
+    perl_destruct(my_perl);
+    perl_free(my_perl);
+    my_perl = 0;
+
+    if (exitstatus)
+	ret = 1;
+    else {
+	ret = 0;
+	sprintf(retstr->strptr, "%s", "ok");
+	retstr->strlength = strlen (retstr->strptr);
+    }
+    PERL_SYS_TERM1(0);
+    return ret;
+}
+
+ULONG PERLEXIT (PCSZ name, LONG rargc, const RXSTRING *rargv,
+                    PCSZ queuename, PRXSTRING retstr)
+{
+    if (rargc != 0)
+	return seterr("no arguments expected, got %ld", rargc);
+    PERL_SYS_TERM1(0);
+    return 0;
+}
+
+ULONG PERLTERM (PCSZ name, LONG rargc, const RXSTRING *rargv,
+                    PCSZ queuename, PRXSTRING retstr)
+{
+    if (rargc != 0)
+	return seterr("no arguments expected, got %ld", rargc);
+    if (!my_perl)
+	return seterr("no perl interpreter present");
+    perl_destruct(my_perl);
+    perl_free(my_perl);
+    my_perl = 0;
+
+    sprintf(retstr->strptr, "%s", "ok");
+    retstr->strlength = strlen (retstr->strptr);
+    return 0;
+}
+
+
+ULONG PERLINIT (PCSZ name, LONG rargc, const RXSTRING *rargv,
+                    PCSZ queuename, PRXSTRING retstr)
+{
+    if (rargc != 0)
+	return seterr("no argument expected, got %ld", rargc);
+    if (!init_perl(1))
+	return 1;
+
+    sprintf(retstr->strptr, "%s", "ok");
+    retstr->strlength = strlen (retstr->strptr);
+    return 0;
+}
+
+ULONG
+PERLLASTERROR (PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr)
+{
+    int len = strlen(last_error);
+
+    if (len <= 256			/* Default buffer is 256-char long */
+	|| !DosAllocMem((PPVOID)&retstr->strptr, len,
+			PAG_READ|PAG_WRITE|PAG_COMMIT)) {
+	    memcpy(retstr->strptr, last_error, len);
+	    retstr->strlength = len;
+    } else {
+	strcpy(retstr->strptr, "[Not enough memory to copy the errortext]");
+	retstr->strlength = strlen(retstr->strptr);
+    }
+    return 0;
+}
+
+ULONG
+PERLEVAL (PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr)
+{
+    SV *res, *in;
+    STRLEN len, n_a;
+    char *str;
+
+    last_error[0] = 0;
+    if (rargc != 1)
+	return seterr("one argument expected, got %ld", rargc);
+
+    if (!init_perl(1))
+	return seterr("error initializing perl");
+
+  {
+    dSP;
+    int ret;
+
+    ENTER;
+    SAVETMPS;
+
+    PUSHMARK(SP);
+    in = sv_2mortal(newSVpvn(rargv[0].strptr, rargv[0].strlength));
+    eval_sv(in, G_SCALAR);
+    SPAGAIN;
+    res = POPs;
+    PUTBACK;
+
+    ret = 0;
+    if (SvTRUE(ERRSV))
+	ret = seterr(SvPV(ERRSV, n_a));
+    if (!SvOK(res))
+	ret = seterr("undefined value returned by Perl-in-REXX");
+    str = SvPV(res, len);
+    if (len <= 256			/* Default buffer is 256-char long */
+	|| !DosAllocMem((PPVOID)&retstr->strptr, len,
+			PAG_READ|PAG_WRITE|PAG_COMMIT)) {
+	    memcpy(retstr->strptr, str, len);
+	    retstr->strlength = len;
+    } else
+	ret = seterr("Not enough memory for the return string of Perl-in-REXX");
+
+    FREETMPS;
+    LEAVE;
+
+    return ret;
+  }
+}
+
+ULONG
+PERLEVALSUBCOMMAND(
+  const RXSTRING    *command,          /* command to issue           */
+  PUSHORT      flags,                  /* error/failure flags        */
+  PRXSTRING    retstr )                /* return code                */
+{
+    ULONG rc = PERLEVAL(NULL, 1, command, NULL, retstr);
+
+    if (rc)
+	*flags = RXSUBCOM_ERROR;         /* raise error condition    */
+
+    return 0;                            /* finished                   */
+}
+
+#define ArrLength(a) (sizeof(a)/sizeof(*(a)))
+
+static const struct {
+  char *name;
+  RexxFunctionHandler *f;
+} funcs[] = {
+             {"PERL",			(RexxFunctionHandler *)&PERL},
+             {"PERLTERM",		(RexxFunctionHandler *)&PERLTERM},
+             {"PERLINIT",		(RexxFunctionHandler *)&PERLINIT},
+             {"PERLEXIT",		(RexxFunctionHandler *)&PERLEXIT},
+             {"PERLEVAL",		(RexxFunctionHandler *)&PERLEVAL},
+             {"PERLLASTERROR",		(RexxFunctionHandler *)&PERLLASTERROR},
+             {"PERLDROPALL",		(RexxFunctionHandler *)&PERLDROPALL},
+             {"PERLDROPALLEXIT",	(RexxFunctionHandler *)&PERLDROPALLEXIT},
+             /* Should be the last entry */
+             {"PERLEXPORTALL",		(RexxFunctionHandler *)&PERLEXPORTALL}
+          };
+
+ULONG
+PERLEXPORTALL(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr)
+{
+   int i = -1;
+
+   while (++i < ArrLength(funcs) - 1)
+	RexxRegisterFunctionExe(funcs[i].name, funcs[i].f);
+   RexxRegisterSubcomExe("EVALPERL", (PFN)&PERLEVALSUBCOMMAND, NULL);
+   retstr->strlength = 0;
+   return 0;
+}
+
+ULONG
+PERLDROPALL(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr)
+{
+   int i = -1;
+
+   while (++i < ArrLength(funcs))
+	RexxDeregisterFunction(funcs[i].name);
+   RexxDeregisterSubcom("EVALPERL", NULL /* Not a DLL version */);
+   retstr->strlength = 0;
+   return 0;
+}
+
+ULONG
+PERLDROPALLEXIT(PCSZ name, LONG rargc, const RXSTRING *rargv, PCSZ queuename, PRXSTRING retstr)
+{
+   int i = -1;
+
+   while (++i < ArrLength(funcs))
+	RexxDeregisterFunction(funcs[i].name);
+   RexxDeregisterSubcom("EVALPERL", NULL /* Not a DLL version */);
+   PERL_SYS_TERM1(0);
+   retstr->strlength = 0;
+   return 0;
+}