/* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user or with the express written consent of * Sun Microsystems, Inc. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ /* * From: @(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI */ char cout_rcsid[] = "$Id$"; /* * rpc_cout.c, XDR routine outputter for the RPC protocol compiler */ #include <ctype.h> #include <stdio.h> #include <string.h> #include "rpc_parse.h" #include "rpc_util.h" #include "proto.h" static void emit_enum (definition * def); static void emit_program (const definition * def); static void emit_union (const definition * def); static void emit_struct (definition * def); static void emit_typedef (const definition * def); static void emit_inline (int indent, declaration * decl, int flag); static void emit_single_in_line (int indent, declaration *decl, int flag, relation rel); static int findtype (const definition * def, const char *type); static int undefined (const char *type); static void print_generic_header (const char *procname, int pointerp); static void print_ifopen (int indent, const char *name); static void print_ifarg (const char *arg); static void print_ifsizeof (int indent, const char *prefix, const char *type); static void print_ifclose (int indent); static void print_ifstat (int indent, const char *prefix, const char *type, relation rel, const char *amax, const char *objname, const char *name); static void print_stat (int indent, const declaration * dec); static void print_header (const definition * def); static void print_trailer (void); static char *upcase (const char *str); /* * Emit the C-routine for the given definition */ void emit (definition * def) { if (def->def_kind == DEF_CONST) { return; } if (def->def_kind == DEF_PROGRAM) { emit_program (def); return; } if (def->def_kind == DEF_TYPEDEF) { /* now we need to handle declarations like struct typedef foo foo; since we don't want this to be expanded into 2 calls to xdr_foo */ if (strcmp (def->def.ty.old_type, def->def_name) == 0) return; }; print_header (def); switch (def->def_kind) { case DEF_UNION: emit_union (def); break; case DEF_ENUM: emit_enum (def); break; case DEF_STRUCT: emit_struct (def); break; case DEF_TYPEDEF: emit_typedef (def); break; default: /* can't happen */ break; } print_trailer (); } static int findtype (const definition * def, const char *type) { if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { return 0; } else { return (streq (def->def_name, type)); } } static int undefined (const char *type) { definition *def; def = (definition *) FINDVAL (defined, type, findtype); return (def == NULL); } static void print_generic_header (const char *procname, int pointerp) { f_print (fout, "\n"); f_print (fout, "bool_t\n"); if (Cflag) { f_print (fout, "xdr_%s (", procname); f_print (fout, "XDR *xdrs, "); f_print (fout, "%s ", procname); if (pointerp) f_print (fout, "*"); f_print (fout, "objp)\n{\n"); } else { f_print (fout, "xdr_%s (xdrs, objp)\n", procname); f_print (fout, "\tXDR *xdrs;\n"); f_print (fout, "\t%s ", procname); if (pointerp) f_print (fout, "*"); f_print (fout, "objp;\n{\n"); } } static void print_header (const definition * def) { print_generic_header (def->def_name, def->def_kind != DEF_TYPEDEF || !isvectordef (def->def.ty.old_type, def->def.ty.rel)); /* Now add Inline support */ if (inlineflag == 0) return; /*May cause lint to complain. but ... */ f_print (fout, "\tregister int32_t *buf;\n\n"); } static void print_prog_header (const proc_list * plist) { print_generic_header (plist->args.argname, 1); } static void print_trailer (void) { f_print (fout, "\treturn TRUE;\n"); f_print (fout, "}\n"); } static void print_ifopen (int indent, const char *name) { tabify (fout, indent); f_print (fout, " if (!xdr_%s (xdrs", name); } static void print_ifarg (const char *arg) { f_print (fout, ", %s", arg); } static void print_ifsizeof (int indent, const char *prefix, const char *type) { if (indent) { fprintf (fout, ",\n"); tabify (fout, indent); } else fprintf (fout, ", "); if (streq (type, "bool")) fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool"); else { fprintf (fout, "sizeof ("); if (undefined (type) && prefix) { f_print (fout, "%s ", prefix); } fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type); } } static void print_ifclose (int indent) { f_print (fout, "))\n"); tabify (fout, indent); f_print (fout, "\t return FALSE;\n"); } static void print_ifstat (int indent, const char *prefix, const char *type, relation rel, const char *amax, const char *objname, const char *name) { const char *alt = NULL; switch (rel) { case REL_POINTER: print_ifopen (indent, "pointer"); print_ifarg ("(char **)"); f_print (fout, "%s", objname); print_ifsizeof (0, prefix, type); break; case REL_VECTOR: if (streq (type, "string")) { alt = "string"; } else if (streq (type, "opaque")) { alt = "opaque"; } if (alt) { print_ifopen (indent, alt); print_ifarg (objname); } else { print_ifopen (indent, "vector"); print_ifarg ("(char *)"); f_print (fout, "%s", objname); } print_ifarg (amax); if (!alt) { print_ifsizeof (indent + 1, prefix, type); } break; case REL_ARRAY: if (streq (type, "string")) { alt = "string"; } else if (streq (type, "opaque")) { alt = "bytes"; } if (streq (type, "string")) { print_ifopen (indent, alt); print_ifarg (objname); } else { if (alt) { print_ifopen (indent, alt); } else { print_ifopen (indent, "array"); } print_ifarg ("(char **)"); if (*objname == '&') { f_print (fout, "%s.%s_val, (u_int *) %s.%s_len", objname, name, objname, name); } else { f_print (fout, "&%s->%s_val, (u_int *) &%s->%s_len", objname, name, objname, name); } } print_ifarg (amax); if (!alt) { print_ifsizeof (indent + 1, prefix, type); } break; case REL_ALIAS: print_ifopen (indent, type); print_ifarg (objname); break; } print_ifclose (indent); } static void emit_enum (definition * def) { (void) def; print_ifopen (1, "enum"); print_ifarg ("(enum_t *) objp"); print_ifclose (1); } static void emit_program (const definition * def) { decl_list *dl; version_list *vlist; proc_list *plist; for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) for (plist = vlist->procs; plist != NULL; plist = plist->next) { if (!newstyle || plist->arg_num < 2) continue; /* old style, or single argument */ print_prog_header (plist); for (dl = plist->args.decls; dl != NULL; dl = dl->next) print_stat (1, &dl->decl); print_trailer (); } } static void emit_union (const definition * def) { declaration *dflt; case_list *cl; declaration *cs; char *object; const char *vecformat = "objp->%s_u.%s"; const char *format = "&objp->%s_u.%s"; print_stat (1, &def->def.un.enum_decl); f_print (fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { f_print (fout, "\tcase %s:\n", cl->case_name); if (cl->contflag == 1) /* a continued case statement */ continue; cs = &cl->case_decl; if (!streq (cs->type, "void")) { object = alloc (strlen (def->def_name) + strlen (format) + strlen (cs->name) + 1); if (isvectordef (cs->type, cs->rel)) { s_print (object, vecformat, def->def_name, cs->name); } else { s_print (object, format, def->def_name, cs->name); } print_ifstat (2, cs->prefix, cs->type, cs->rel, cs->array_max, object, cs->name); free (object); } f_print (fout, "\t\tbreak;\n"); } dflt = def->def.un.default_decl; if (dflt != NULL) { if (!streq (dflt->type, "void")) { f_print (fout, "\tdefault:\n"); object = alloc (strlen (def->def_name) + strlen (format) + strlen (dflt->name) + 1); if (isvectordef (dflt->type, dflt->rel)) { s_print (object, vecformat, def->def_name, dflt->name); } else { s_print (object, format, def->def_name, dflt->name); } print_ifstat (2, dflt->prefix, dflt->type, dflt->rel, dflt->array_max, object, dflt->name); free (object); f_print (fout, "\t\tbreak;\n"); } #ifdef __GNU_LIBRARY__ else { f_print (fout, "\tdefault:\n"); f_print (fout, "\t\tbreak;\n"); } #endif } else { f_print (fout, "\tdefault:\n"); f_print (fout, "\t\treturn FALSE;\n"); } f_print (fout, "\t}\n"); } static void inline_struct (definition *def, int flag) { decl_list *dl; int i, size; decl_list *cur = NULL; decl_list *psav; bas_type *ptr; char *sizestr; const char *plus; char ptemp[256]; int indent = 1; if (flag == PUT) f_print (fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); else f_print (fout, "\t\treturn TRUE;\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); i = 0; size = 0; sizestr = NULL; for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ /* now walk down the list and check for basic types */ if ((dl->decl.prefix == NULL) && ((ptr = find_type (dl->decl.type)) != NULL) && ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { if (i == 0) cur = dl; ++i; if (dl->decl.rel == REL_ALIAS) size += ptr->length; else { /* this is required to handle arrays */ if (sizestr == NULL) plus = ""; else plus = "+ "; if (ptr->length != 1) s_print (ptemp, " %s %s * %d", plus, dl->decl.array_max, ptr->length); else s_print (ptemp, " %s%s ", plus, dl->decl.array_max); /*now concatenate to sizestr !!!! */ if (sizestr == NULL) sizestr = strdup (ptemp); else { sizestr = realloc (sizestr, strlen (sizestr) + strlen (ptemp) + 1); if (sizestr == NULL) { f_print (stderr, "Fatal error : no memory \n"); crash (); }; sizestr = strcat (sizestr, ptemp); /*build up length of array */ } } } else { if (i > 0) { if (sizestr == NULL && size < inlineflag) { /* don't expand into inline code if size < inlineflag */ while (cur != dl) { print_stat (indent + 1, &cur->decl); cur = cur->next; } } else { /* were already looking at a xdr_inlineable structure */ tabify (fout, indent + 1); if (sizestr == NULL) f_print (fout, "buf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size); else if (size == 0) f_print (fout, "buf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);", sizestr); else f_print (fout, "buf = XDR_INLINE (xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", size, sizestr); f_print (fout, "\n"); tabify (fout, indent + 1); fprintf (fout, "if (buf == NULL) {\n"); psav = cur; while (cur != dl) { print_stat (indent + 2, &cur->decl); cur = cur->next; } f_print (fout, "\n\t\t} else {\n"); cur = psav; while (cur != dl) { emit_inline (indent + 1, &cur->decl, flag); cur = cur->next; } tabify (fout, indent + 1); f_print (fout, "}\n"); } } size = 0; i = 0; sizestr = NULL; print_stat (indent + 1, &dl->decl); } } if (i > 0) { if (sizestr == NULL && size < inlineflag) { /* don't expand into inline code if size < inlineflag */ while (cur != dl) { print_stat (indent + 1, &cur->decl); cur = cur->next; } } else { /* were already looking at a xdr_inlineable structure */ if (sizestr == NULL) f_print (fout, "\t\tbuf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size); else if (size == 0) f_print (fout, "\t\tbuf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);", sizestr); else f_print (fout, "\t\tbuf = XDR_INLINE (xdrs, (%d + %s)* BYTES_PER_XDR_UNIT);", size, sizestr); f_print (fout, "\n\t\tif (buf == NULL) {\n"); psav = cur; while (cur != NULL) { print_stat (indent + 2, &cur->decl); cur = cur->next; } f_print (fout, "\t\t} else {\n"); cur = psav; while (cur != dl) { emit_inline (indent + 2, &cur->decl, flag); cur = cur->next; } f_print (fout, "\t\t}\n"); } } } /* this may be const. i haven't traced this one through yet. */ static void emit_struct (definition * def) { decl_list *dl; int j, size, flag; bas_type *ptr; int can_inline; if (inlineflag == 0) { /* No xdr_inlining at all */ for (dl = def->def.st.decls; dl != NULL; dl = dl->next) print_stat (1, &dl->decl); return; } for (dl = def->def.st.decls; dl != NULL; dl = dl->next) if (dl->decl.rel == REL_VECTOR) { f_print (fout, "\tint i;\n"); break; } size = 0; can_inline = 0; /* * Make a first pass and see if inling is possible. */ for (dl = def->def.st.decls; dl != NULL; dl = dl->next) if ((dl->decl.prefix == NULL) && ((ptr = find_type (dl->decl.type)) != NULL) && ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { if (dl->decl.rel == REL_ALIAS) size += ptr->length; else { can_inline = 1; break; /* can be inlined */ } } else { if (size >= inlineflag) { can_inline = 1; break; /* can be inlined */ } size = 0; } if (size > inlineflag) can_inline = 1; if (can_inline == 0) { /* can not inline, drop back to old mode */ for (dl = def->def.st.decls; dl != NULL; dl = dl->next) print_stat (1, &dl->decl); return; }; flag = PUT; for (j = 0; j < 2; j++) { inline_struct (def, flag); if (flag == PUT) flag = GET; } f_print (fout, "\t return TRUE;\n\t}\n\n"); /* now take care of XDR_FREE case */ for (dl = def->def.st.decls; dl != NULL; dl = dl->next) print_stat (1, &dl->decl); } static void emit_typedef (const definition * def) { const char *prefix = def->def.ty.old_prefix; const char *type = def->def.ty.old_type; const char *amax = def->def.ty.array_max; relation rel = def->def.ty.rel; print_ifstat (1, prefix, type, rel, amax, "objp", def->def_name); } static void print_stat (int indent, const declaration * dec) { const char *prefix = dec->prefix; const char *type = dec->type; const char *amax = dec->array_max; relation rel = dec->rel; char name[256]; if (isvectordef (type, rel)) { s_print (name, "objp->%s", dec->name); } else { s_print (name, "&objp->%s", dec->name); } print_ifstat (indent, prefix, type, rel, amax, name, dec->name); } static void emit_inline (int indent, declaration * decl, int flag) { switch (decl->rel) { case REL_ALIAS: emit_single_in_line (indent, decl, flag, REL_ALIAS); break; case REL_VECTOR: tabify (fout, indent); f_print (fout, "{\n"); tabify (fout, indent + 1); f_print (fout, "register %s *genp;\n\n", decl->type); tabify (fout, indent + 1); f_print (fout, "for (i = 0, genp = objp->%s;\n", decl->name); tabify (fout, indent + 2); f_print (fout, "i < %s; ++i) {\n", decl->array_max); emit_single_in_line (indent + 2, decl, flag, REL_VECTOR); tabify (fout, indent + 1); f_print (fout, "}\n"); tabify (fout, indent); f_print (fout, "}\n"); break; default: break; /* ?... do nothing I guess */ } } static void emit_single_in_line (int indent, declaration *decl, int flag, relation rel) { char *upp_case; int freed = 0; tabify (fout, indent); if (flag == PUT) f_print (fout, "IXDR_PUT_"); else { if (rel == REL_ALIAS) f_print (fout, "objp->%s = IXDR_GET_", decl->name); else f_print (fout, "*genp++ = IXDR_GET_"); } upp_case = upcase (decl->type); /* hack - XX */ if (!strcmp (upp_case, "INT")) { free (upp_case); freed = 1; /* Casting is safe since the `freed' flag is set. */ upp_case = (char *) "LONG"; } if (!strcmp (upp_case, "U_INT")) { free (upp_case); freed = 1; /* Casting is safe since the `freed' flag is set. */ upp_case = (char *) "U_LONG"; } if (flag == PUT) { if (rel == REL_ALIAS) f_print (fout, "%s(buf, objp->%s);\n", upp_case, decl->name); else f_print (fout, "%s(buf, *genp++);\n", upp_case); } else { f_print (fout, "%s(buf);\n", upp_case); } if (!freed) free (upp_case); } static char * upcase (const char *str) { char *ptr, *hptr; ptr = malloc (strlen (str) + 1); if (ptr == NULL) { f_print (stderr, "malloc failed\n"); exit (1); } hptr = ptr; while (*str != '\0') *ptr++ = toupper (*str++); *ptr = '\0'; return hptr; }