/* * Copyright (c) 2009, Sun Microsystems, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * - Neither the name of Sun Microsystems, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #if 0 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; #endif /* * rpc_cout.c, XDR routine outputter for the RPC protocol compiler */ #include #include #include #include #include "rpc_parse.h" #include "rpc_util.h" static int findtype(definition *def, char *type); static int undefined(char *type); static void print_generic_header(char *procname, int pointerp); static void print_header(definition *def); static void print_prog_header(proc_list *plist); static void print_trailer(void); static void print_ifopen(int indent, char *name); static void print_ifarg(char *arg); static void print_ifsizeof(char *prefix, char *type); static void print_ifclose(int indent); static void print_ifstat(int indent, char *prefix, char *type, relation rel, char *amax, char *objname, char *name); static void emit_enum(definition *def); static void emit_program(definition *def); static void emit_union(definition *def); static void emit_struct(definition *def); static void emit_typedef(definition *def); static void print_stat(int indent, declaration *dec); static void emit_inline(declaration *decl, int flag); static void emit_single_in_line(declaration *decl, int flag, relation rel); static char * upcase(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 dont 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: break; } print_trailer(); } static int findtype(definition *def, 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(char *type) { definition *def; def = (definition *) FINDVAL(defined, type, findtype); return (def == NULL); } static void print_generic_header(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\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\n"); } } static void print_header(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 (Inline == 0) return; } static void print_prog_header(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, char *name) { tabify(fout, indent); f_print(fout, " if (!xdr_%s(xdrs", name); } static void print_ifarg(char *arg) { f_print(fout, ", %s", arg); } static void print_ifsizeof(char *prefix, char *type) { if (streq(type, "bool")) { f_print(fout, ", sizeof(bool_t), (xdrproc_t)xdr_bool"); } else { f_print(fout, ", sizeof("); if (undefined(type) && prefix) { f_print(fout, "%s ", prefix); } f_print(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"); tabify(fout, indent); f_print(fout, " }\n"); } static void print_ifstat(int indent, char *prefix, char *type, relation rel, char *amax, char *objname, char *name) { char *alt = NULL; switch (rel) { case REL_POINTER: print_ifopen(indent, "pointer"); print_ifarg("(char **)"); f_print(fout, "%s", objname); print_ifsizeof(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(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"); } /* The (void*) avoids a gcc-4.1 warning */ print_ifarg("(char **)(void*)"); 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(prefix, type); } break; case REL_ALIAS: print_ifopen(indent, type); print_ifarg(objname); break; } print_ifclose(indent); } static void emit_enum(definition *def) { print_ifopen(1, "enum"); print_ifarg("(enum_t *)objp"); print_ifclose(1); } static void emit_program(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(definition *def) { declaration *dflt; case_list *cl; declaration *cs; char *object; char *vecformat = "objp->%s_u.%s"; 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"); } else { /* Avoid gcc warnings about `value not handled in switch' */ f_print(fout, "\tdefault:\n"); f_print(fout, "\t\tbreak;\n"); } } else { f_print(fout, "\tdefault:\n"); f_print(fout, "\t\treturn (FALSE);\n"); } f_print(fout, "\t}\n"); } static void emit_struct(definition *def) { decl_list *dl; int i, j, size, flag; decl_list *cur = NULL, *psav; bas_type *ptr; char *sizestr, *plus; char ptemp[256]; int can_inline; const char *buf_declaration; if (Inline == 0) { for (dl = def->def.st.decls; dl != NULL; dl = dl->next) print_stat(1, &dl->decl); } else { size = 0; can_inline = 0; 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 >= Inline) { can_inline = 1; break; /* can be inlined */ } size = 0; } if (size > Inline) 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++) { if (flag == PUT) f_print(fout, "\n\t if (xdrs->x_op == XDR_ENCODE) {\n"); else f_print(fout, "\n \t return (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); i = 0; size = 0; sizestr = NULL; buf_declaration = "int32_t *"; 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 < Inline) { /* don't expand into inline code if size < inline */ while (cur != dl) { print_stat(1, &cur->decl); cur = cur->next; } } else { /* were already looking at a xdr_inlineable structure */ if (sizestr == NULL) f_print(fout, "\t %sbuf = XDR_INLINE(xdrs,%d * BYTES_PER_XDR_UNIT);", buf_declaration, size); else if (size == 0) f_print(fout, "\t %sbuf = XDR_INLINE(xdrs,%s * BYTES_PER_XDR_UNIT);", buf_declaration, sizestr); else f_print(fout, "\t %sbuf = XDR_INLINE(xdrs,(%d + %s)* BYTES_PER_XDR_UNIT);", buf_declaration, size, sizestr); buf_declaration = ""; f_print(fout, "\n\t if (buf == NULL) {\n"); psav = cur; while (cur != dl) { print_stat(2, &cur->decl); cur = cur->next; } f_print(fout, "\n\t }\n\t else {\n"); cur = psav; while (cur != dl) { emit_inline(&cur->decl, flag); cur = cur->next; } f_print(fout, "\t }\n"); } } size = 0; i = 0; sizestr = NULL; print_stat(1, &dl->decl); } } if (i > 0) { if (sizestr == NULL && size < Inline) { /* don't expand into inline code if size < inline */ while (cur != dl) { print_stat(1, &cur->decl); cur = cur->next; } } else { /* were already looking at a xdr_inlineable structure */ if (sizestr == NULL) f_print(fout, "\t\t%sbuf = XDR_INLINE(xdrs,%d * BYTES_PER_XDR_UNIT);", buf_declaration, size); else if (size == 0) f_print(fout, "\t\t%sbuf = XDR_INLINE(xdrs,%s * BYTES_PER_XDR_UNIT);", buf_declaration, sizestr); else f_print(fout, "\t\t%sbuf = XDR_INLINE(xdrs,(%d + %s)* BYTES_PER_XDR_UNIT);", buf_declaration, size, sizestr); buf_declaration = ""; f_print(fout, "\n\t\tif (buf == NULL) {\n"); psav = cur; while (cur != NULL) { print_stat(2, &cur->decl); cur = cur->next; } f_print(fout, "\n\t }\n\t else {\n"); cur = psav; while (cur != dl) { emit_inline(&cur->decl, flag); cur = cur->next; } f_print(fout, "\t }\n"); } } 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(definition *def) { char *prefix = def->def.ty.old_prefix; char *type = def->def.ty.old_type; 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, declaration *dec) { char *prefix = dec->prefix; char *type = dec->type; 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(declaration *decl, int flag) { /*check whether an array or not */ switch (decl->rel) { case REL_ALIAS: emit_single_in_line(decl, flag, REL_ALIAS); break; case REL_VECTOR: f_print(fout, "\t\t{ register %s *genp; \n", decl->type); f_print(fout, "\t\t int i;\n"); f_print(fout, "\t\t for ( i = 0,genp=objp->%s;\n \t\t\ti < %s; i++){\n\t\t", decl->name, decl->array_max); emit_single_in_line(decl, flag, REL_VECTOR); f_print(fout, "\t\t }\n\t\t };\n"); break; default: break; } } static void emit_single_in_line(declaration *decl, int flag, relation rel) { char *upp_case; int freed=0; if(flag == PUT) f_print(fout,"\t\t (void) IXDR_PUT_"); else if(rel== REL_ALIAS) f_print(fout,"\t\t objp->%s = IXDR_GET_",decl->name); else f_print(fout,"\t\t *genp++ = IXDR_GET_"); upp_case=upcase(decl->type); /* hack - XX */ if(strcmp(upp_case,"INT") == 0) { free(upp_case); freed=1; upp_case="INT32"; } if(strcmp(upp_case,"U_INT") == 0) { free(upp_case); freed=1; upp_case="U_INT32"; } 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(char *str) { char *ptr, *hptr; ptr = (char *) malloc(strlen(str)+1); if (ptr == (char *) NULL) { f_print(stderr, "malloc failed \n"); exit(1); }; hptr = ptr; while (*str != '\0') *ptr++ = toupper(*str++); *ptr = '\0'; return (hptr); }