387 lines
11 KiB
C
387 lines
11 KiB
C
/*
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* Value/Parameter type functions
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*
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* Copyright (C) 2001-2007 Peter Johnson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "util.h"
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/*@unused@*/ RCSID("$Id: valparam.c 2010 2007-11-14 08:33:32Z peter $");
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#include "libyasm-stdint.h"
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#include "coretype.h"
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#include "valparam.h"
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#include "errwarn.h"
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#include "intnum.h"
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#include "expr.h"
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#include "symrec.h"
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#include "section.h"
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void
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yasm_call_directive(const yasm_directive *directive, yasm_object *object,
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yasm_valparamhead *valparams,
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yasm_valparamhead *objext_valparams, unsigned long line)
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{
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yasm_valparam *vp;
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if ((directive->flags & (YASM_DIR_ARG_REQUIRED|YASM_DIR_ID_REQUIRED)) &&
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(!valparams || !yasm_vps_first(valparams))) {
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yasm_error_set(YASM_ERROR_SYNTAX,
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N_("directive `%s' requires an argument"),
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directive->name);
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return;
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}
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if (valparams) {
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vp = yasm_vps_first(valparams);
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if ((directive->flags & YASM_DIR_ID_REQUIRED) &&
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vp->type != YASM_PARAM_ID) {
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yasm_error_set(YASM_ERROR_SYNTAX,
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N_("directive `%s' requires an identifier parameter"),
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directive->name);
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return;
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}
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}
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directive->handler(object, valparams, objext_valparams, line);
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}
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yasm_valparam *
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yasm_vp_create_id(/*@keep@*/ char *v, /*@keep@*/ char *p, int id_prefix)
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{
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yasm_valparam *r = yasm_xmalloc(sizeof(yasm_valparam));
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r->val = v;
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r->type = YASM_PARAM_ID;
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r->param.id = p;
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r->id_prefix = (char)id_prefix;
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return r;
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}
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yasm_valparam *
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yasm_vp_create_string(/*@keep@*/ char *v, /*@keep@*/ char *p)
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{
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yasm_valparam *r = yasm_xmalloc(sizeof(yasm_valparam));
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r->val = v;
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r->type = YASM_PARAM_STRING;
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r->param.str = p;
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r->id_prefix = '\0';
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return r;
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}
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yasm_valparam *
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yasm_vp_create_expr(/*@keep@*/ char *v, /*@keep@*/ yasm_expr *p)
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{
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yasm_valparam *r = yasm_xmalloc(sizeof(yasm_valparam));
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r->val = v;
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r->type = YASM_PARAM_EXPR;
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r->param.e = p;
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r->id_prefix = '\0';
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return r;
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}
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/*@null@*/ /*@only@*/ yasm_expr *
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yasm_vp_expr(const yasm_valparam *vp, yasm_symtab *symtab, unsigned long line)
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{
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if (!vp)
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return NULL;
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switch (vp->type) {
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case YASM_PARAM_ID:
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return yasm_expr_create_ident(yasm_expr_sym(
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yasm_symtab_use(symtab, yasm_vp_id(vp), line)), line);
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case YASM_PARAM_EXPR:
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return yasm_expr_copy(vp->param.e);
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default:
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return NULL;
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}
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}
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/*@null@*/ /*@dependent@*/ const char *
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yasm_vp_string(const yasm_valparam *vp)
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{
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if (!vp)
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return NULL;
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switch (vp->type) {
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case YASM_PARAM_ID:
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return vp->param.id;
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case YASM_PARAM_STRING:
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return vp->param.str;
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default:
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return NULL;
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}
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}
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/*@null@*/ /*@dependent@*/ const char *
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yasm_vp_id(const yasm_valparam *vp)
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{
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if (!vp)
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return NULL;
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if (vp->type == YASM_PARAM_ID) {
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if (vp->param.id[0] == vp->id_prefix)
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return &vp->param.id[1];
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else
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return vp->param.id;
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}
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return NULL;
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}
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void
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yasm_vps_delete(yasm_valparamhead *headp)
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{
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yasm_valparam *cur, *next;
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cur = STAILQ_FIRST(headp);
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while (cur) {
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next = STAILQ_NEXT(cur, link);
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if (cur->val)
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yasm_xfree(cur->val);
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switch (cur->type) {
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case YASM_PARAM_ID:
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yasm_xfree(cur->param.id);
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break;
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case YASM_PARAM_STRING:
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yasm_xfree(cur->param.str);
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break;
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case YASM_PARAM_EXPR:
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yasm_expr_destroy(cur->param.e);
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break;
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}
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yasm_xfree(cur);
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cur = next;
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}
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STAILQ_INIT(headp);
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}
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void
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yasm_vps_print(const yasm_valparamhead *headp, FILE *f)
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{
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const yasm_valparam *vp;
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if(!headp) {
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fprintf(f, "(none)");
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return;
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}
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yasm_vps_foreach(vp, headp) {
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if (vp->val)
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fprintf(f, "(\"%s\",", vp->val);
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else
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fprintf(f, "((nil),");
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switch (vp->type) {
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case YASM_PARAM_ID:
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fprintf(f, "%s", vp->param.id);
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break;
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case YASM_PARAM_STRING:
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fprintf(f, "\"%s\"", vp->param.str);
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break;
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case YASM_PARAM_EXPR:
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yasm_expr_print(vp->param.e, f);
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break;
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}
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fprintf(f, ")");
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if (yasm_vps_next(vp))
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fprintf(f, ",");
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}
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}
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yasm_valparamhead *
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yasm_vps_create(void)
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{
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yasm_valparamhead *headp = yasm_xmalloc(sizeof(yasm_valparamhead));
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yasm_vps_initialize(headp);
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return headp;
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}
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void
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yasm_vps_destroy(yasm_valparamhead *headp)
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{
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yasm_vps_delete(headp);
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yasm_xfree(headp);
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}
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int
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yasm_dir_helper(void *obj, yasm_valparam *vp_first, unsigned long line,
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const yasm_dir_help *help, size_t nhelp, void *data,
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int (*helper_valparam) (void *obj, yasm_valparam *vp,
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unsigned long line, void *data))
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{
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yasm_valparam *vp = vp_first;
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int anymatched = 0;
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int matched;
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if (!vp)
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return 0;
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do {
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const char *s;
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size_t i;
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matched = 0;
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if (!vp->val && (s = yasm_vp_id(vp))) {
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for (i=0; i<nhelp; i++) {
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if (help[i].needsparam == 0 &&
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yasm__strcasecmp(s, help[i].name) == 0) {
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if (help[i].helper(obj, vp, line,
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((char *)data)+help[i].off,
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help[i].arg) != 0)
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return -1;
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matched = 1;
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anymatched = 1;
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break;
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}
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}
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} else if (vp->val) {
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for (i=0; i<nhelp; i++) {
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if (help[i].needsparam == 1 &&
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yasm__strcasecmp(vp->val, help[i].name) == 0) {
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if (help[i].helper(obj, vp, line,
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((char *)data)+help[i].off,
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help[i].arg) != 0)
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return -1;
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matched = 1;
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anymatched = 1;
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break;
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}
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}
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}
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if (!matched) {
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int final = helper_valparam(obj, vp, line, data);
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if (final < 0)
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return -1;
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if (final > 0)
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anymatched = 1;
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}
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} while((vp = yasm_vps_next(vp)));
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return anymatched;
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}
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int
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yasm_dir_helper_flag_or(void *obj, yasm_valparam *vp, unsigned long line,
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void *d, uintptr_t flag)
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{
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unsigned long *flags = (unsigned long *)d;
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*flags |= flag;
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return 0;
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}
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int
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yasm_dir_helper_flag_and(void *obj, yasm_valparam *vp, unsigned long line,
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void *d, uintptr_t flag)
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{
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unsigned long *flags = (unsigned long *)d;
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*flags &= ~flag;
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return 0;
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}
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int
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yasm_dir_helper_flag_set(void *obj, yasm_valparam *vp, unsigned long line,
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void *d, uintptr_t flag)
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{
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unsigned long *flags = (unsigned long *)d;
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*flags = flag;
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return 0;
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}
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int
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yasm_dir_helper_expr(void *obj, yasm_valparam *vp, unsigned long line,
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void *data, uintptr_t arg)
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{
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yasm_object *object = (yasm_object *)obj;
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yasm_expr **expr = (yasm_expr **)data;
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if (*expr)
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yasm_expr_destroy(*expr);
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if (!(*expr = yasm_vp_expr(vp, object->symtab, line))) {
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yasm_error_set(YASM_ERROR_VALUE, N_("argument to `%s' is not an expression"),
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vp->val);
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return -1;
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}
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return 0;
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}
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int
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yasm_dir_helper_intn(void *obj, yasm_valparam *vp, unsigned long line,
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void *data, uintptr_t arg)
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{
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yasm_object *object = (yasm_object *)obj;
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/*@only@*/ /*@null@*/ yasm_expr *e;
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/*@dependent@*/ /*@null@*/ yasm_intnum *local;
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yasm_intnum **intn = (yasm_intnum **)data;
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if (*intn)
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yasm_intnum_destroy(*intn);
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if (!(e = yasm_vp_expr(vp, object->symtab, line)) ||
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!(local = yasm_expr_get_intnum(&e, 0))) {
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yasm_error_set(YASM_ERROR_NOT_CONSTANT,
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N_("argument to `%s' is not an integer"),
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vp->val);
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if (e)
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yasm_expr_destroy(e);
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return -1;
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}
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*intn = yasm_intnum_copy(local);
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yasm_expr_destroy(e);
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return 0;
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}
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int
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yasm_dir_helper_string(void *obj, yasm_valparam *vp, unsigned long line,
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void *data, uintptr_t arg)
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{
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/*@dependent@*/ /*@null@*/ const char *local;
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char **s = (char **)data;
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if (*s)
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yasm_xfree(*s);
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if (!(local = yasm_vp_string(vp))) {
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yasm_error_set(YASM_ERROR_VALUE,
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N_("argument to `%s' is not a string or identifier"),
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vp->val);
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return -1;
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}
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*s = yasm__xstrdup(local);
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return 0;
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}
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int
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yasm_dir_helper_valparam_warn(void *obj, yasm_valparam *vp,
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unsigned long line, void *data)
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{
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const char *s;
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if (vp->val) {
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yasm_warn_set(YASM_WARN_GENERAL, N_("Unrecognized qualifier `%s'"),
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vp->val);
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return 0;
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}
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if ((s = yasm_vp_id(vp)))
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yasm_warn_set(YASM_WARN_GENERAL, N_("Unrecognized qualifier `%s'"), s);
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else if (vp->type == YASM_PARAM_STRING)
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yasm_warn_set(YASM_WARN_GENERAL, N_("Unrecognized string qualifier"));
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else
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yasm_warn_set(YASM_WARN_GENERAL, N_("Unrecognized numeric qualifier"));
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return 0;
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}
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