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erikb
367
lang/cem/cemcom/dumpidf.c
Normal file
367
lang/cem/cemcom/dumpidf.c
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/* $Header$ */
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/* DUMP ROUTINES */
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#include "debug.h"
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#ifdef DEBUG
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#include "nopp.h"
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#include "nobitfield.h"
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#include "arith.h"
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#include "stack.h"
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#include "idf.h"
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#include "def.h"
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#include "type.h"
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#include "struct.h"
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#include "field.h"
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#include "Lpars.h"
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#include "label.h"
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#include "expr.h"
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/* Some routines (symbol2str, token2str, type2str) which should have
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* yielded strings are written to yield a pointer to a transient piece
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* of memory, containing the string, since this is the only reasonable
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* thing to do in C. `Transient' means that the result may soon
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* disappear, which is generally not a problem, since normally it is
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* consumed immediately. Sometimes we need more than one of them, and
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* MAXTRANS is the maximum number we will need simultaneously.
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*/
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#define MAXTRANS 6
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extern char options[];
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extern char *sprintf();
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extern struct idf *idf_hashtable[];
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extern char *symbol2str(), *type2str(), *next_transient();
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enum sdef_kind {selector, field}; /* parameter for dumpsdefs */
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static int dumplevel;
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static
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newline() {
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int dl = dumplevel;
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printf("\n");
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while (dl >= 2) {
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printf("\t");
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dl -= 2;
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}
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if (dl)
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printf(" ");
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}
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dumpidftab(msg, opt)
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char msg[];
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{
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/* Dumps the identifier table in readable form (but in
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arbitrary order).
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Unless opt & 1, macros are not dumped.
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Unless opt & 2, reserved identifiers are not dumped.
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Unless opt & 4, universal identifiers are not dumped.
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*/
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int i;
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printf(">>> DUMPIDF, %s (start)", msg);
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dumpstack();
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for (i = 0; i < HASHSIZE; i++) {
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struct idf *notch = idf_hashtable[i];
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while (notch) {
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dumpidf(notch, opt);
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notch = notch->next;
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}
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}
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newline();
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printf(">>> DUMPIDF, %s (end)\n", msg);
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}
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dumpstack() {
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/* Dumps the identifier stack, starting at the top.
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*/
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struct stack_level *stl = local_level;
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while (stl) {
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struct stack_entry *se = stl->sl_entry;
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newline();
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printf("%3d: ", stl->sl_level);
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while (se) {
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printf("%s ", se->se_idf->id_text);
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se = se->next;
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}
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stl = stl->sl_previous;
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}
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printf("\n");
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}
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dumpidf(idf, opt)
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struct idf *idf;
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{
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/* All information about the identifier idf is divulged in a
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hopefully readable format.
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*/
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int started = 0;
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if (!idf)
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return;
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#ifndef NOPP
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if ((opt&1) && idf->id_macro) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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printf(" macro");
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}
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#endif NOPP
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if ((opt&2) && idf->id_reserved) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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printf(" reserved: %d;", idf->id_reserved);
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}
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if (idf->id_def && ((opt&4) || idf->id_def->df_level)) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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dumpdefs(idf->id_def, opt);
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}
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if (idf->id_sdef) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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dumpsdefs(idf->id_sdef, selector);
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}
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if (idf->id_struct) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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dumptags(idf->id_struct);
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}
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if (idf->id_enum) {
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if (!started++) {
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newline();
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printf("%s:", idf->id_text);
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}
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dumptags(idf->id_enum);
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}
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}
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dumpdefs(def, opt)
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register struct def *def;
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{
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dumplevel++;
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while (def && ((opt&4) || def->df_level)) {
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newline();
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printf("L%d: %s %s%s%s%s%s %lo;",
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def->df_level,
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symbol2str(def->df_sc),
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(def->df_register != REG_NONE) ? "reg " : "",
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def->df_initialized ? "init'd " : "",
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def->df_used ? "used " : "",
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type2str(def->df_type),
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def->df_sc == ENUM ? ", =" : " at",
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def->df_address
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);
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def = def->next;
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}
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dumplevel--;
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}
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dumptags(tag)
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struct tag *tag;
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{
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dumplevel++;
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while (tag) {
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register struct type *tp = tag->tg_type;
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register int fund = tp->tp_fund;
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newline();
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printf("L%d: %s %s",
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tag->tg_level,
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fund == STRUCT ? "struct" :
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fund == UNION ? "union" :
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fund == ENUM ? "enum" : "<UNKNOWN>",
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tp->tp_idf->id_text
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);
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if (is_struct_or_union(fund)) {
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printf(" {");
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dumpsdefs(tp->tp_sdef, field);
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newline();
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printf("}");
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}
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printf(";");
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tag = tag->next;
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}
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dumplevel--;
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}
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dumpsdefs(sdef, sdk)
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struct sdef *sdef;
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enum sdef_kind sdk;
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{
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/* Since sdef's are members of two chains, there are actually
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two dumpsdefs's, one following the chain of all selectors
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belonging to the same idf, starting at idf->id_sdef;
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and the other following the chain of all selectors belonging
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to the same struct, starting at stp->tp_sdef.
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*/
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dumplevel++;
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while (sdef) {
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newline();
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printf("L%d: ", sdef->sd_level);
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#ifndef NOBITFIELD
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if (sdk == selector)
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#endif NOBITFIELD
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printf("selector %s at offset %lu in %s;",
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type2str(sdef->sd_type),
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sdef->sd_offset, type2str(sdef->sd_stype)
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);
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#ifndef NOBITFIELD
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else printf("field %s at offset %lu;",
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type2str(sdef->sd_type), sdef->sd_offset
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);
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#endif NOBITFIELD
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sdef = (sdk == selector ? sdef->next : sdef->sd_sdef);
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}
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dumplevel--;
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}
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char *
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type2str(tp)
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struct type *tp;
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{
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/* Yields a pointer to a one-line description of the type tp.
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*/
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char *buf = next_transient();
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int ops = 1;
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buf[0] = '\0';
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if (!tp) {
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sprintf(buf, "<NILTYPE>");
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return buf;
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}
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sprintf(buf, "(@%lx, #%ld, &%d) ", tp, (long)tp->tp_size, tp->tp_align);
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while (ops) {
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switch (tp->tp_fund) {
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case POINTER:
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sprintf(buf, "%spointer to ", buf);
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break;
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case ARRAY:
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sprintf(buf, "%sarray [%ld] of ", buf, tp->tp_size);
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break;
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case FUNCTION:
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sprintf(buf, "%sfunction yielding ", buf);
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break;
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default:
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sprintf(buf, "%s%s%s", buf,
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tp->tp_unsigned ? "unsigned " : "",
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symbol2str(tp->tp_fund)
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);
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if (tp->tp_idf)
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sprintf(buf, "%s %s", buf,
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tp->tp_idf->id_text);
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#ifndef NOBITFIELD
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if (tp->tp_field) {
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struct field *fd = tp->tp_field;
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sprintf(buf, "%s [s=%ld,w=%ld]", buf,
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fd->fd_shift, fd->fd_width);
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}
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#endif NOBITFIELD
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ops = 0;
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break;
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}
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tp = tp->tp_up;
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}
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return buf;
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}
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char * /* the ultimate transient buffer supplier */
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next_transient() {
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static int bnum;
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static char buf[MAXTRANS][300];
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if (++bnum == MAXTRANS)
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bnum = 0;
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return buf[bnum];
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}
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print_expr(msg, expr)
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char msg[];
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struct expr *expr;
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{
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/* Provisional routine to print an expression preceded by a
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message msg.
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*/
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if (options['x']) {
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printf("\n%s: ", msg);
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printf("(L=line, T=type, r/lV=r/lvalue, F=flags, D=depth)\n");
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p1_expr(0, expr);
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}
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}
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p1_expr(lvl, expr)
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struct expr *expr;
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{
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extern char *type2str(), *symbol2str();
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p1_indent(lvl);
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if (!expr) {
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printf("NILEXPR\n");
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return;
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}
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printf("expr: L=%u, T=%s, %cV, F=%02o, D=%d, %s: ",
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expr->ex_line,
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type2str(expr->ex_type),
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expr->ex_lvalue ? 'l' : 'r',
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expr->ex_flags,
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expr->ex_depth,
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expr->ex_class == Value ? "Value" :
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expr->ex_class == String ? "String" :
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expr->ex_class == Float ? "Float" :
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expr->ex_class == Oper ? "Oper" :
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expr->ex_class == Type ? "Type" : "UNKNOWN CLASS"
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);
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switch (expr->ex_class) {
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struct value *v;
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struct oper *o;
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case Value:
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v = &expr->ex_object.ex_value;
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if (v->vl_idf)
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printf("%s + ", v->vl_idf->id_text);
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printf(expr->ex_type->tp_unsigned ? "%lu\n" : "%ld\n",
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v->vl_value);
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break;
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case String:
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printf("%s\n", expr->SG_VALUE);
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break;
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case Float:
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printf("%s\n", expr->FL_VALUE);
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break;
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case Oper:
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o = &expr->ex_object.ex_oper;
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printf("\n");
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p1_expr(lvl+1, o->op_left);
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p1_indent(lvl); printf("%s\n", symbol2str(o->op_oper));
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p1_expr(lvl+1, o->op_right);
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break;
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case Type:
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printf("\n");
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break;
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default:
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printf("UNKNOWN CLASS\n");
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break;
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}
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}
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p1_indent(lvl) {
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while (lvl--)
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printf(" ");
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}
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#endif DEBUG
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