diff options
Diffstat (limited to 'usr.bin/rpcgen/rpc_cout.c')
| -rw-r--r-- | usr.bin/rpcgen/rpc_cout.c | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/usr.bin/rpcgen/rpc_cout.c b/usr.bin/rpcgen/rpc_cout.c new file mode 100644 index 000000000000..8c2864847850 --- /dev/null +++ b/usr.bin/rpcgen/rpc_cout.c @@ -0,0 +1,710 @@ +/* + * 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. + * + * 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 + */ + +/* + * rpc_cout.c, XDR routine outputter for the RPC protocol compiler + * Copyright (C) 1987, Sun Microsystems, Inc. + */ +#include <ctype.h> +#include <stdio.h> +#include <string.h> +#include "rpc_parse.h" +#include "rpc_scan.h" +#include "rpc_util.h" + +static void print_header( definition * ); +static void print_trailer( void ); +static void print_stat( int , declaration * ); +static void emit_enum( definition * ); +static void emit_program( definition * ); +static void emit_union( definition * ); +static void emit_struct( definition * ); +static void emit_typedef( definition * ); +static void emit_inline( int, declaration *, int ); +static void emit_single_in_line( int, declaration *, int, relation ); + +/* + * 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; + /* DEF_CONST and DEF_PROGRAM have already been handled */ + default: + break; + } + print_trailer(); +} + +static int +findtype(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"); + 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"); +} + +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_size == 0) + return; + /* May cause lint to complain. but ... */ + f_print(fout, "\tregister long *buf;\n\n"); +} + +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, 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) { + f_print(fout, ",\n"); + tabify(fout, indent); + } else { + f_print(fout, ", "); + } + 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, int brace) +{ + f_print(fout, "))\n"); + tabify(fout, indent); + f_print(fout, "\treturn (FALSE);\n"); + if (brace) + f_print(fout, "\t}\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; + int brace = 0; + + switch (rel) { + case REL_POINTER: + brace = 1; + f_print(fout, "\t{\n"); + f_print(fout, "\t%s **pp = %s;\n", type, objname); + print_ifopen(indent, "pointer"); + print_ifarg("(char **)"); + f_print(fout, "pp"); + 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, brace); +} + +/* ARGSUSED */ +static void +emit_enum(definition *def __unused) +{ + print_ifopen(1, "enum"); + print_ifarg("(enum_t *)objp"); + print_ifclose(1, 0); +} + +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; + 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 = xmalloc(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 = xmalloc(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 { + 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 +inline_struct(definition *def, int flag) +{ + decl_list *dl; + int i, size; + decl_list *cur, *psav; + bas_type *ptr; + char *sizestr; + const char *plus; + char ptemp[256]; + int indent = 1; + + cur = NULL; + 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 code 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 = xstrdup(ptemp); + } + else{ + sizestr = xrealloc(sizestr, + strlen(sizestr) + +strlen(ptemp)+1); + sizestr = strcat(sizestr, ptemp); + /* build up length of array */ + } + } + } else { + if (i > 0) { + if (sizestr == NULL && size < inline_size){ + /* + * don't expand into inline code + * if size < inline_size + */ + 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); + f_print(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 + 2, &cur->decl, flag); + cur = cur->next; + } + + tabify(fout, indent + 1); + f_print(fout, "}\n"); + } + } + size = 0; + i = 0; + free(sizestr); + sizestr = NULL; + print_stat(indent + 1, &dl->decl); + } + } + + if (i > 0) { + if (sizestr == NULL && size < inline_size){ + /* don't expand into inline code if size < inline_size */ + 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"); + } + } +} + +static void +emit_struct(definition *def) +{ + decl_list *dl; + int j, size, flag; + bas_type *ptr; + int can_inline; + + if (inline_size == 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 && + strcmp(dl->decl.type, "opaque") != 0){ + 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 >= inline_size){ + can_inline = 1; + break; /* can be inlined */ + } + size = 0; + } + if (size >= inline_size) + 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\treturn (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) +{ + 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, 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); +} + + +char *upcase(const char *); + +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, "%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; + } +} + +static void +emit_single_in_line(int indent, declaration *decl, int flag, relation rel) +{ + char *upp_case; + + 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") == 0) + { + free(upp_case); + upp_case = strdup("LONG"); + } + + if (strcmp(upp_case, "U_INT") == 0) + { + free(upp_case); + upp_case = strdup("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); + free(upp_case); +} + +char * +upcase(const char *str) +{ + char *ptr, *hptr; + + ptr = (char *)xmalloc(strlen(str)+1); + + hptr = ptr; + while (*str != '\0') + *ptr++ = toupper(*str++); + + *ptr = '\0'; + return (hptr); +} |