/*
* Write a definition.
*/
static void
outdef(hte_t *hte, sym_t *sym)
{
/* reset output buffer */
outclr();
/* line number in C source file */
outint(0);
/* this is a definition */
outchar('d');
/* index of file where symbol was defined and line number of def. */
outint(0);
outchar('.');
outint(0);
/* flags */
if (sym->s_va) {
outchar('v'); /* varargs */
outint(sym->s_nva);
}
if (sym->s_scfl) {
outchar('S'); /* scanflike */
outint(sym->s_nscfl);
}
if (sym->s_prfl) {
outchar('P'); /* printflike */
outint(sym->s_nprfl);
}
/* definition or tentative definition */
outchar(sym->s_def == DEF ? 'd' : 't');
if (TP(sym->s_type)->t_tspec == FUNC) {
if (sym->s_rval)
outchar('r'); /* fkt. has return value */
if (sym->s_osdef)
outchar('o'); /* old style definition */
}
outchar('u'); /* used (no warning if not used) */
/* name */
outname(hte->h_name);
/* type */
outtype(TP(sym->s_type));
}
/*
* type to string
* used for debugging output
*
* it uses its own output buffer for conversion
*/
const char *
ttos(type_t *tp)
{
static ob_t tob;
ob_t tmp;
if (tob.o_buf == NULL) {
tob.o_len = 64;
tob.o_buf = tob.o_nxt = xmalloc(tob.o_len);
tob.o_end = tob.o_buf + tob.o_len;
}
tmp = ob;
ob = tob;
ob.o_nxt = ob.o_buf;
outtype(tp);
outchar('\0');
tob = ob;
ob = tmp;
return (tob.o_buf);
}
/* vfprint - formatted output to f or string bp */
void vfprint(FILE *f, char *bp, const char *fmt, va_list ap) {
for (; *fmt; fmt++)
if (*fmt == '%')
switch (*++fmt) {
case 'd': bp = outd(va_arg(ap, int), f, bp); break;
case 'D': bp = outd(va_arg(ap, long), f, bp); break;
case 'U': bp = outu(va_arg(ap, unsigned long), 10, f, bp); break;
case 'u': bp = outu(va_arg(ap, unsigned), 10, f, bp); break;
case 'o': bp = outu(va_arg(ap, unsigned), 8, f, bp); break;
case 'X': bp = outu(va_arg(ap, unsigned long), 16, f, bp); break;
case 'x': bp = outu(va_arg(ap, unsigned), 16, f, bp); break;
case 'f': case 'e':
case 'g': {
static char format[] = "%f";
char buf[128];
format[1] = *fmt;
sprintf(buf, format, va_arg(ap, double));
bp = outs(buf, f, bp);
}
; break;
case 's': bp = outs(va_arg(ap, char *), f, bp); break;
case 'p': {
void *p = va_arg(ap, void *);
if (p)
bp = outs("0x", f, bp);
bp = outu((unsigned long)p, 16, f, bp);
break;
}
case 'c': if (f) fputc(va_arg(ap, int), f); else *bp++ = va_arg(ap, int); break;
case 'S': { char *s = va_arg(ap, char *);
int n = va_arg(ap, int);
if (s)
for ( ; n-- > 0; s++)
if (f) (void)putc(*s, f); else *bp++ = *s;
} break;
case 'k': { int t = va_arg(ap, int);
static char *tokens[] = {
#define xx(a,b,c,d,e,f,g) g,
#define yy(a,b,c,d,e,f,g) g,
#include "token.h"
};
assert(tokens[t&0177]);
bp = outs(tokens[t&0177], f, bp);
} break;
case 't': { Type ty = va_arg(ap, Type);
assert(f);
outtype(ty ? ty : voidtype, f);
} break;
case 'w': { Coordinate *p = va_arg(ap, Coordinate *);
if (p->file && *p->file) {
bp = outs(p->file, f, bp);
bp = outs(":", f, bp);
}
bp = outd(p->y, f, bp);
} break;
case 'I': { int n = va_arg(ap, int);
while (--n >= 0)
if (f) (void)putc(' ', f); else *bp++ = ' ';
} break;
default: if (f) (void)putc(*fmt, f); else *bp++ = *fmt; break;
}
else if (f)
/*
* Write type into the output buffer.
* The type is written as a sequence of substrings, each of which describes a
* node of type type_t
* a node is coded as follows:
* _Bool B
* _Complex float s X
* _Complex double X
* _Complex long double l X
* char C
* signed char s C
* unsigned char u C
* short S
* unsigned short u S
* int I
* unsigned int u I
* long L
* unsigned long u L
* long long Q
* unsigned long long u Q
* float s D
* double D
* long double l D
* void V
* * P
* [n] A n
* () F
* (void) F 0
* (n arguments) F n arg1 arg2 ... argn
* (n arguments, ...) F n arg1 arg2 ... argn-1 E
* (a, b, c, ...) f n arg1 arg2 ...
* enum tag e T tag_or_typename
* struct tag s T tag_or_typename
* union tag u T tag_or_typename
*
* tag_or_typename 0 no tag or type name
* 1 n tag Tag
* 2 n typename only type name
*
* spaces are only for better readability
* additionaly it is possible to prepend the characters 'c' (for const)
* and 'v' (for volatile)
*/
void
outtype(type_t *tp)
{
int t, s, na;
sym_t *arg;
tspec_t ts;
while (tp != NULL) {
if ((ts = tp->t_tspec) == INT && tp->t_isenum)
ts = ENUM;
switch (ts) {
case BOOL: t = 'B'; s = '\0'; break;
case CHAR: t = 'C'; s = '\0'; break;
case SCHAR: t = 'C'; s = 's'; break;
case UCHAR: t = 'C'; s = 'u'; break;
case SHORT: t = 'S'; s = '\0'; break;
case USHORT: t = 'S'; s = 'u'; break;
case INT: t = 'I'; s = '\0'; break;
case UINT: t = 'I'; s = 'u'; break;
case LONG: t = 'L'; s = '\0'; break;
case ULONG: t = 'L'; s = 'u'; break;
case QUAD: t = 'Q'; s = '\0'; break;
case UQUAD: t = 'Q'; s = 'u'; break;
case FLOAT: t = 'D'; s = 's'; break;
case DOUBLE: t = 'D'; s = '\0'; break;
case LDOUBLE: t = 'D'; s = 'l'; break;
case VOID: t = 'V'; s = '\0'; break;
case PTR: t = 'P'; s = '\0'; break;
case ARRAY: t = 'A'; s = '\0'; break;
case FUNC: t = 'F'; s = '\0'; break;
case ENUM: t = 'T'; s = 'e'; break;
case STRUCT: t = 'T'; s = 's'; break;
case UNION: t = 'T'; s = 'u'; break;
case FCOMPLEX: t = 'X'; s = 's'; break;
case DCOMPLEX: t = 'X'; s = '\0'; break;
case LCOMPLEX: t = 'X'; s = 'l'; break;
default:
LERROR("outtyp()");
}
if (tp->t_const)
outchar('c');
if (tp->t_volatile)
outchar('v');
if (s != '\0')
outchar(s);
outchar(t);
if (ts == ARRAY) {
outint(tp->t_dim);
} else if (ts == ENUM) {
outtt(tp->t_enum->etag, tp->t_enum->etdef);
} else if (ts == STRUCT || ts == UNION) {
outtt(tp->t_str->stag, tp->t_str->stdef);
} else if (ts == FUNC && tp->t_proto) {
na = 0;
for (arg = tp->t_args; arg != NULL; arg = arg->s_nxt)
na++;
if (tp->t_vararg)
na++;
outint(na);
for (arg = tp->t_args; arg != NULL; arg = arg->s_nxt)
outtype(arg->s_type);
if (tp->t_vararg)
outchar('E');
}
tp = tp->t_subt;
}
}
/*
* write out all information necessary for lint2 to check function
* calls
*
* rvused is set if the return value is used (asigned to a variable)
* rvdisc is set if the return value is not used and not ignored
* (casted to void)
*/
void
outcall(tnode_t *tn, int rvused, int rvdisc)
{
tnode_t *args, *arg;
int narg, n, i;
int64_t q;
tspec_t t;
/* reset buffer */
outclr();
/*
* line number of .c source, 'c' for function call, Id of current
* source (.c or .h), and line in current source
*/
outint(csrc_pos.p_line);
outchar('c');
outint(getfnid(curr_pos.p_file));
outchar('.');
outint(curr_pos.p_line);
/*
* flags; 'u' and 'i' must be last to make sure a letter
* is between the numeric argument of a flag and the name of
* the function
*/
narg = 0;
args = tn->tn_right;
for (arg = args; arg != NULL; arg = arg->tn_right)
narg++;
/* informations about arguments */
for (n = 1; n <= narg; n++) {
/* the last argument is the top one in the tree */
for (i = narg, arg = args; i > n; i--, arg = arg->tn_right)
continue;
arg = arg->tn_left;
if (arg->tn_op == CON) {
if (isityp(t = arg->tn_type->t_tspec)) {
/*
* XXX it would probably be better to
* explicitly test the sign
*/
if ((q = arg->tn_val->v_quad) == 0) {
/* zero constant */
outchar('z');
} else if (msb(q, t, 0) == 0) {
/* positive if casted to signed */
outchar('p');
} else {
/* negative if casted to signed */
outchar('n');
}
outint(n);
}
} else if (arg->tn_op == AMPER &&
arg->tn_left->tn_op == STRING &&
arg->tn_left->tn_strg->st_tspec == CHAR) {
/* constant string, write all format specifiers */
outchar('s');
outint(n);
outfstrg(arg->tn_left->tn_strg);
}
}
/* return value discarded/used/ignored */
outchar(rvdisc ? 'd' : (rvused ? 'u' : 'i'));
/* name of the called function */
outname(tn->tn_left->tn_left->tn_sym->s_name);
/* types of arguments */
outchar('f');
outint(narg);
for (n = 1; n <= narg; n++) {
/* the last argument is the top one in the tree */
for (i = narg, arg = args; i > n; i--, arg = arg->tn_right)
continue;
outtype(arg->tn_left->tn_type);
}
/* expected type of return value */
outtype(tn->tn_type);
}
/*
* write information about function definition
*
* this is also done for static functions so we are able to check if
* they are called with proper argument types
*/
void
outfdef(sym_t *fsym, pos_t *posp, int rval, int osdef, sym_t *args)
{
int narg;
sym_t *arg;
/* reset the buffer */
outclr();
/*
* line number of .c source, 'd' for declaration, Id of current
* source (.c or .h), and line in current source
*
* we are already at the end of the function. If we are in the
* .c source, posp->p_line is correct, otherwise csrc_pos.p_line
* (for functions defined in header files).
*/
if (posp->p_file == csrc_pos.p_file) {
outint(posp->p_line);
} else {
outint(csrc_pos.p_line);
}
outchar('d');
outint(getfnid(posp->p_file));
outchar('.');
outint(posp->p_line);
/* flags */
/* both SCANFLIKE and PRINTFLIKE imply VARARGS */
if (prflstrg != -1) {
nvararg = prflstrg;
} else if (scflstrg != -1) {
nvararg = scflstrg;
}
if (nvararg != -1) {
outchar('v');
outint(nvararg);
}
if (scflstrg != -1) {
outchar('S');
outint(scflstrg);
}
if (prflstrg != -1) {
outchar('P');
outint(prflstrg);
}
nvararg = prflstrg = scflstrg = -1;
outchar('d');
if (rval)
/* has return value */
outchar('r');
if (llibflg)
/*
* mark it as used so lint2 does not complain about
* unused symbols in libraries
*/
outchar('u');
if (osdef)
/* old style function definition */
outchar('o');
if (fsym->s_scl == STATIC)
outchar('s');
/* name of function */
outname(fsym->s_name);
/* renamed name of function, if necessary */
if (fsym->s_rename) {
outchar('r');
outname(fsym->s_rename);
}
/* argument types and return value */
if (osdef) {
narg = 0;
for (arg = args; arg != NULL; arg = arg->s_nxt)
narg++;
outchar('f');
outint(narg);
for (arg = args; arg != NULL; arg = arg->s_nxt)
outtype(arg->s_type);
outtype(fsym->s_type->t_subt);
} else {
outtype(fsym->s_type);
}
}
/*
* write information about an global declared/defined symbol
* with storage class extern
*
* informations about function definitions are written in outfdef(),
* not here
*/
void
outsym(sym_t *sym, scl_t sc, def_t def)
{
/*
* Static function declarations must also be written to the output
* file. Compatibility of function declarations (for both static
* and extern functions) must be checked in lint2. Lint1 can't do
* this, especially not, if functions are declared at block level
* before their first declaration at level 0.
*/
if (sc != EXTERN && !(sc == STATIC && sym->s_type->t_tspec == FUNC))
return;
/* reset buffer */
outclr();
/*
* line number of .c source, 'd' for declaration, Id of current
* source (.c or .h), and line in current source.
*/
outint(csrc_pos.p_line);
outchar('d');
outint(getfnid(sym->s_dpos.p_file));
outchar('.');
outint(sym->s_dpos.p_line);
/* flags */
switch (def) {
case DEF:
/* defined */
outchar('d');
break;
case TDEF:
/* tentative defined */
outchar('t');
break;
case DECL:
/* declared */
outchar('e');
break;
default:
LERROR("outsym()");
}
if (llibflg && def != DECL) {
/*
* mark it as used so we get no warnings from lint2 about
* unused symbols in libraries.
*/
outchar('u');
}
if (sc == STATIC)
outchar('s');
/* name of the symbol */
outname(sym->s_name);
/* renamed name of symbol, if necessary */
if (sym->s_rename) {
outchar('r');
outname(sym->s_rename);
}
/* type of the symbol */
outtype(sym->s_type);
}
/*
* Write type into the output buffer.
*/
static void
outtype(type_t *tp)
{
int t, s, na;
tspec_t ts;
type_t **ap;
while (tp != NULL) {
if ((ts = tp->t_tspec) == INT && tp->t_isenum)
ts = ENUM;
switch (ts) {
case BOOL: t = 'B'; s = '\0'; break;
case CHAR: t = 'C'; s = '\0'; break;
case SCHAR: t = 'C'; s = 's'; break;
case UCHAR: t = 'C'; s = 'u'; break;
case SHORT: t = 'S'; s = '\0'; break;
case USHORT: t = 'S'; s = 'u'; break;
case INT: t = 'I'; s = '\0'; break;
case UINT: t = 'I'; s = 'u'; break;
case LONG: t = 'L'; s = '\0'; break;
case ULONG: t = 'L'; s = 'u'; break;
case QUAD: t = 'Q'; s = '\0'; break;
case UQUAD: t = 'Q'; s = 'u'; break;
case FLOAT: t = 'D'; s = 's'; break;
case DOUBLE: t = 'D'; s = '\0'; break;
case LDOUBLE: t = 'D'; s = 'l'; break;
case COMPLEX: t = 'X'; s = 's'; break;
case DCOMPLEX: t = 'X'; s = '\0'; break;
case LDCOMPLEX: t = 'X'; s = 'l'; break;
case IMAGINARY: t = 'J'; s = 's'; break;
case DIMAGINARY: t = 'J'; s = '\0'; break;
case LDIMAGINARY:t = 'J'; s = 'l'; break;
case VOID: t = 'V'; s = '\0'; break;
case PTR: t = 'P'; s = '\0'; break;
case ARRAY: t = 'A'; s = '\0'; break;
case ENUM: t = 'T'; s = 'e'; break;
case STRUCT: t = 'T'; s = 's'; break;
case UNION: t = 'T'; s = 'u'; break;
case FUNC:
if (tp->t_args != NULL && !tp->t_proto) {
t = 'f';
} else {
t = 'F';
}
s = '\0';
break;
default:
errx(1, "internal error: outtype() 1");
}
if (tp->t_const)
outchar('c');
if (tp->t_volatile)
outchar('v');
if (s != '\0')
outchar(s);
outchar(t);
if (ts == ARRAY) {
outint(tp->t_dim);
} else if (ts == ENUM || ts == STRUCT || ts == UNION) {
if (tp->t_istag) {
outint(1);
outname(tp->t_tag->h_name);
} else if (tp->t_istynam) {
outint(2);
outname(tp->t_tynam->h_name);
} else {
outint(0);
}
} else if (ts == FUNC && tp->t_args != NULL) {
na = 0;
for (ap = tp->t_args; *ap != NULL; ap++)
na++;
if (tp->t_vararg)
na++;
outint(na);
for (ap = tp->t_args; *ap != NULL; ap++)
outtype(*ap);
if (tp->t_vararg)
outchar('E');
}
tp = tp->t_subt;
}
}
