| 1 |
4 |
hellwig |
#include <string.h>
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| 2 |
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#include <stdlib.h>
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#include "c.h"
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#include "stab.h"
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| 6 |
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static char rcsid[] = "$Id: stab.c,v 1.1 2002/08/28 23:12:46 drh Exp $";
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| 8 |
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static char *currentfile; /* current file name */
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static int ntypes;
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| 11 |
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extern Interface sparcIR;
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char *stabprefix = "L";
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extern char *stabprefix;
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extern void stabblock(int, int, Symbol*);
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extern void stabend(Coordinate *, Symbol, Coordinate **, Symbol *, Symbol *);
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extern void stabfend(Symbol, int);
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extern void stabinit(char *, int, char *[]);
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extern void stabline(Coordinate *);
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extern void stabsym(Symbol);
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extern void stabtype(Symbol);
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static void asgncode(Type, int);
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static void dbxout(Type);
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static int dbxtype(Type);
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static int emittype(Type, int, int);
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/* asgncode - assign type code to ty */
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static void asgncode(Type ty, int lev) {
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if (ty->x.marked || ty->x.typeno)
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return;
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ty->x.marked = 1;
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switch (ty->op) {
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case VOLATILE: case CONST: case VOLATILE+CONST:
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asgncode(ty->type, lev);
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ty->x.typeno = ty->type->x.typeno;
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break;
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case POINTER: case FUNCTION: case ARRAY:
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asgncode(ty->type, lev + 1);
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/* fall thru */
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case VOID: case INT: case UNSIGNED: case FLOAT:
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break;
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case STRUCT: case UNION: {
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Field p;
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for (p = fieldlist(ty); p; p = p->link)
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asgncode(p->type, lev + 1);
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/* fall thru */
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case ENUM:
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if (ty->x.typeno == 0)
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ty->x.typeno = ++ntypes;
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if (lev > 0 && (*ty->u.sym->name < '0' || *ty->u.sym->name > '9'))
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dbxout(ty);
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break;
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}
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default:
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assert(0);
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}
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}
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/* dbxout - output .stabs entry for type ty */
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static void dbxout(Type ty) {
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ty = unqual(ty);
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if (!ty->x.printed) {
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int col = 0;
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print(".stabs \""), col += 8;
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if (ty->u.sym && !(isfunc(ty) || isarray(ty) || isptr(ty)))
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print("%s", ty->u.sym->name), col += strlen(ty->u.sym->name);
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print(":%c", isstruct(ty) || isenum(ty) ? 'T' : 't'), col += 2;
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emittype(ty, 0, col);
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print("\",%d,0,0,0\n", N_LSYM);
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}
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}
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/* dbxtype - emit a stabs entry for type ty, return type code */
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static int dbxtype(Type ty) {
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asgncode(ty, 0);
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dbxout(ty);
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return ty->x.typeno;
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}
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/*
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* emittype - emit ty's type number, emitting its definition if necessary.
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* Returns the output column number after emission; col is the approximate
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* output column before emission and is used to emit continuation lines for long
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* struct, union, and enum types. Continuations are not emitted for other types,
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* even if the definition is long. lev is the depth of calls to emittype.
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*/
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static int emittype(Type ty, int lev, int col) {
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int tc = ty->x.typeno;
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| 92 |
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if (isconst(ty) || isvolatile(ty)) {
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col = emittype(ty->type, lev, col);
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ty->x.typeno = ty->type->x.typeno;
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ty->x.printed = 1;
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return col;
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| 97 |
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}
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| 98 |
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if (tc == 0) {
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| 99 |
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ty->x.typeno = tc = ++ntypes;
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/* fprint(2,"`%t'=%d\n", ty, tc); */
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| 101 |
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}
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print("%d", tc), col += 3;
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if (ty->x.printed)
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return col;
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ty->x.printed = 1;
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switch (ty->op) {
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case VOID: /* void is defined as itself */
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print("=%d", tc), col += 1+3;
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break;
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case INT:
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if (ty == chartype) /* plain char is a subrange of itself */
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print("=r%d;%d;%d;", tc, ty->u.sym->u.limits.min.i, ty->u.sym->u.limits.max.i),
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col += 2+3+2*2.408*ty->size+2;
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else /* other signed ints are subranges of int */
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print("=r1;%D;%D;", ty->u.sym->u.limits.min.i, ty->u.sym->u.limits.max.i),
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col += 4+2*2.408*ty->size+2;
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break;
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| 118 |
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case UNSIGNED:
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if (ty == chartype) /* plain char is a subrange of itself */
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| 120 |
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print("=r%d;0;%u;", tc, ty->u.sym->u.limits.max.i),
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col += 2+3+2+2.408*ty->size+1;
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| 122 |
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else /* other signed ints are subranges of int */
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print("=r1;0;%U;", ty->u.sym->u.limits.max.i),
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col += 4+2.408*ty->size+1;
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| 125 |
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break;
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| 126 |
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case FLOAT: /* float, double, long double get sizes, not ranges */
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| 127 |
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print("=r1;%d;0;", ty->size), col += 4+1+3;
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| 128 |
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break;
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| 129 |
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case POINTER:
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print("=*"), col += 2;
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col = emittype(ty->type, lev + 1, col);
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break;
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| 133 |
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case FUNCTION:
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print("=f"), col += 2;
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col = emittype(ty->type, lev + 1, col);
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| 136 |
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break;
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| 137 |
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case ARRAY: /* array includes subscript as an int range */
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| 138 |
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if (ty->size && ty->type->size)
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| 139 |
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print("=ar1;0;%d;", ty->size/ty->type->size - 1), col += 7+3+1;
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| 140 |
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else
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print("=ar1;0;-1;"), col += 10;
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col = emittype(ty->type, lev + 1, col);
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| 143 |
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break;
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| 144 |
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case STRUCT: case UNION: {
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Field p;
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if (!ty->u.sym->defined) {
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print("=x%c%s:", ty->op == STRUCT ? 's' : 'u', ty->u.sym->name);
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col += 2+1+strlen(ty->u.sym->name)+1;
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break;
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| 150 |
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}
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| 151 |
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if (lev > 0 && (*ty->u.sym->name < '0' || *ty->u.sym->name > '9')) {
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| 152 |
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ty->x.printed = 0;
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break;
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| 154 |
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}
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| 155 |
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print("=%c%d", ty->op == STRUCT ? 's' : 'u', ty->size), col += 1+1+3;
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| 156 |
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for (p = fieldlist(ty); p; p = p->link) {
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| 157 |
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if (p->name)
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| 158 |
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print("%s:", p->name), col += strlen(p->name)+1;
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| 159 |
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else
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| 160 |
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print(":"), col += 1;
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col = emittype(p->type, lev + 1, col);
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| 162 |
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if (p->lsb)
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| 163 |
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print(",%d,%d;", 8*p->offset +
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| 164 |
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(IR->little_endian ? fieldright(p) : fieldleft(p)),
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fieldsize(p));
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| 166 |
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else
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| 167 |
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print(",%d,%d;", 8*p->offset, 8*p->type->size);
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| 168 |
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col += 1+3+1+3+1; /* accounts for ,%d,%d; */
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| 169 |
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if (col >= 80 && p->link) {
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| 170 |
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print("\\\\\",%d,0,0,0\n.stabs \"", N_LSYM);
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| 171 |
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col = 8;
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| 172 |
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}
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| 173 |
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}
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| 174 |
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print(";"), col += 1;
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| 175 |
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break;
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| 176 |
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}
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| 177 |
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case ENUM: {
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| 178 |
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Symbol *p;
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| 179 |
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if (lev > 0 && (*ty->u.sym->name < '0' || *ty->u.sym->name > '9')) {
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| 180 |
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ty->x.printed = 0;
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| 181 |
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break;
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| 182 |
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}
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| 183 |
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print("=e"), col += 2;
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| 184 |
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for (p = ty->u.sym->u.idlist; *p; p++) {
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| 185 |
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print("%s:%d,", (*p)->name, (*p)->u.value), col += strlen((*p)->name)+3;
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| 186 |
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if (col >= 80 && p[1]) {
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| 187 |
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print("\\\\\",%d,0,0,0\n.stabs \"", N_LSYM);
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| 188 |
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col = 8;
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| 189 |
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}
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| 190 |
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}
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| 191 |
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print(";"), col += 1;
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| 192 |
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break;
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| 193 |
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}
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| 194 |
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default:
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| 195 |
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assert(0);
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| 196 |
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}
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| 197 |
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return col;
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| 198 |
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}
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| 199 |
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| 200 |
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/* stabblock - output a stab entry for '{' or '}' at level lev */
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| 201 |
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void stabblock(int brace, int lev, Symbol *p) {
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| 202 |
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if (brace == '{')
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| 203 |
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while (*p)
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| 204 |
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stabsym(*p++);
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| 205 |
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if (IR == &sparcIR)
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| 206 |
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print(".stabd 0x%x,0,%d\n", brace == '{' ? N_LBRAC : N_RBRAC, lev);
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| 207 |
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else {
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| 208 |
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int lab = genlabel(1);
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| 209 |
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print(".stabn 0x%x,0,%d,%s%d-%s\n", brace == '{' ? N_LBRAC : N_RBRAC, lev,
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| 210 |
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stabprefix, lab, cfunc->x.name);
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| 211 |
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print("%s%d:\n", stabprefix, lab);
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| 212 |
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}
|
| 213 |
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}
|
| 214 |
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| 215 |
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/* stabinit - initialize stab output */
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| 216 |
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void stabinit(char *file, int argc, char *argv[]) {
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| 217 |
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typedef void (*Closure)(Symbol, void *);
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| 218 |
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| 219 |
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print(".stabs \"lcc4_compiled.\",0x%x,0,0,0\n", N_OPT);
|
| 220 |
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if (file && *file) {
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| 221 |
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print(".stabs \"%s\",0x%x,0,3,%stext0\n", file, N_SO, stabprefix);
|
| 222 |
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(*IR->segment)(CODE);
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| 223 |
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print("%stext0:\n", stabprefix, N_SO);
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| 224 |
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currentfile = file;
|
| 225 |
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}
|
| 226 |
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dbxtype(inttype);
|
| 227 |
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dbxtype(chartype);
|
| 228 |
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dbxtype(doubletype);
|
| 229 |
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dbxtype(floattype);
|
| 230 |
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dbxtype(longdouble);
|
| 231 |
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dbxtype(longtype);
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| 232 |
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dbxtype(longlong);
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| 233 |
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dbxtype(shorttype);
|
| 234 |
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dbxtype(signedchar);
|
| 235 |
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dbxtype(unsignedchar);
|
| 236 |
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dbxtype(unsignedlong);
|
| 237 |
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dbxtype(unsignedlonglong);
|
| 238 |
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dbxtype(unsignedshort);
|
| 239 |
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dbxtype(unsignedtype);
|
| 240 |
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dbxtype(voidtype);
|
| 241 |
|
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foreach(types, GLOBAL, (Closure)stabtype, NULL);
|
| 242 |
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}
|
| 243 |
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|
| 244 |
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/* stabline - emit stab entry for source coordinate *cp */
|
| 245 |
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void stabline(Coordinate *cp) {
|
| 246 |
|
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if (cp->file && cp->file != currentfile) {
|
| 247 |
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int lab = genlabel(1);
|
| 248 |
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print(".stabs \"%s\",0x%x,0,0,%s%d\n", cp->file, N_SOL, stabprefix, lab);
|
| 249 |
|
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print("%s%d:\n", stabprefix, lab);
|
| 250 |
|
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currentfile = cp->file;
|
| 251 |
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}
|
| 252 |
|
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if (IR == &sparcIR)
|
| 253 |
|
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print(".stabd 0x%x,0,%d\n", N_SLINE, cp->y);
|
| 254 |
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else {
|
| 255 |
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int lab = genlabel(1);
|
| 256 |
|
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print(".stabn 0x%x,0,%d,%s%d-%s\n", N_SLINE, cp->y,
|
| 257 |
|
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stabprefix, lab, cfunc->x.name);
|
| 258 |
|
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print("%s%d:\n", stabprefix, lab);
|
| 259 |
|
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}
|
| 260 |
|
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}
|
| 261 |
|
|
|
| 262 |
|
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/* stabsym - output a stab entry for symbol p */
|
| 263 |
|
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void stabsym(Symbol p) {
|
| 264 |
|
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int code, tc, sz = p->type->size;
|
| 265 |
|
|
|
| 266 |
|
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if (p->generated || p->computed)
|
| 267 |
|
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return;
|
| 268 |
|
|
if (isfunc(p->type)) {
|
| 269 |
|
|
print(".stabs \"%s:%c%d\",%d,0,0,%s\n", p->name,
|
| 270 |
|
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p->sclass == STATIC ? 'f' : 'F', dbxtype(freturn(p->type)),
|
| 271 |
|
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N_FUN, p->x.name);
|
| 272 |
|
|
return;
|
| 273 |
|
|
}
|
| 274 |
|
|
if (!IR->wants_argb && p->scope == PARAM && p->structarg) {
|
| 275 |
|
|
assert(isptr(p->type) && isstruct(p->type->type));
|
| 276 |
|
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tc = dbxtype(p->type->type);
|
| 277 |
|
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sz = p->type->type->size;
|
| 278 |
|
|
} else
|
| 279 |
|
|
tc = dbxtype(p->type);
|
| 280 |
|
|
if (p->sclass == AUTO && p->scope == GLOBAL || p->sclass == EXTERN) {
|
| 281 |
|
|
print(".stabs \"%s:G", p->name);
|
| 282 |
|
|
code = N_GSYM;
|
| 283 |
|
|
} else if (p->sclass == STATIC) {
|
| 284 |
|
|
print(".stabs \"%s:%c%d\",%d,0,0,%s\n", p->name, p->scope == GLOBAL ? 'S' : 'V',
|
| 285 |
|
|
tc, p->u.seg == BSS ? N_LCSYM : N_STSYM, p->x.name);
|
| 286 |
|
|
return;
|
| 287 |
|
|
} else if (p->sclass == REGISTER) {
|
| 288 |
|
|
if (p->x.regnode) {
|
| 289 |
|
|
int r = p->x.regnode->number;
|
| 290 |
|
|
if (p->x.regnode->set == FREG)
|
| 291 |
|
|
r += 32; /* floating point */
|
| 292 |
|
|
print(".stabs \"%s:%c%d\",%d,0,", p->name,
|
| 293 |
|
|
p->scope == PARAM ? 'P' : 'r', tc, N_RSYM);
|
| 294 |
|
|
print("%d,%d\n", sz, r);
|
| 295 |
|
|
}
|
| 296 |
|
|
return;
|
| 297 |
|
|
} else if (p->scope == PARAM) {
|
| 298 |
|
|
print(".stabs \"%s:p", p->name);
|
| 299 |
|
|
code = N_PSYM;
|
| 300 |
|
|
} else if (p->scope >= LOCAL) {
|
| 301 |
|
|
print(".stabs \"%s:", p->name);
|
| 302 |
|
|
code = N_LSYM;
|
| 303 |
|
|
} else
|
| 304 |
|
|
assert(0);
|
| 305 |
|
|
print("%d\",%d,0,0,%s\n", tc, code,
|
| 306 |
|
|
p->scope >= PARAM && p->sclass != EXTERN ? p->x.name : "0");
|
| 307 |
|
|
}
|
| 308 |
|
|
|
| 309 |
|
|
/* stabtype - output a stab entry for type *p */
|
| 310 |
|
|
void stabtype(Symbol p) {
|
| 311 |
|
|
if (p->type) {
|
| 312 |
|
|
if (p->sclass == 0)
|
| 313 |
|
|
dbxtype(p->type);
|
| 314 |
|
|
else if (p->sclass == TYPEDEF)
|
| 315 |
|
|
print(".stabs \"%s:t%d\",%d,0,0,0\n", p->name, dbxtype(p->type), N_LSYM);
|
| 316 |
|
|
}
|
| 317 |
|
|
}
|
| 318 |
|
|
|
| 319 |
|
|
/* stabend - finalize a function */
|
| 320 |
|
|
void stabfend(Symbol p, int lineno) {}
|
| 321 |
|
|
|
| 322 |
|
|
/* stabend - finalize stab output */
|
| 323 |
|
|
void stabend(Coordinate *cp, Symbol p, Coordinate **cpp, Symbol *sp, Symbol *stab) {
|
| 324 |
|
|
(*IR->segment)(CODE);
|
| 325 |
|
|
print(".stabs \"\", %d, 0, 0,%setext\n", N_SO, stabprefix);
|
| 326 |
|
|
print("%setext:\n", stabprefix);
|
| 327 |
|
|
}
|
