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/*******************************************************************/
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/* slibtool: a skinny libtool implementation, written in C */
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/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
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/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
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/*******************************************************************/
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#include <time.h>
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#include <locale.h>
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#include <regex.h>
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#include <inttypes.h>
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#include <slibtool/slibtool.h>
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#include <slibtool/slibtool_output.h>
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#include "slibtool_driver_impl.h"
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#include "slibtool_dprintf_impl.h"
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#include "slibtool_errinfo_impl.h"
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#include "slibtool_ar_impl.h"
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/****************************************************/
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/* Generate a linker version script (aka mapfile) */
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/* that could be passed to the host linker. */
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/* */
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/* Since the provided symbol list is host-neautral, */
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/* prepend symbol names with an underscore whenever */
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/* necessary. */
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/****************************************************/
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static int slbt_is_strong_coff_symbol(const char * sym)
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{
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return strncmp(sym,"__imp_",6) && strncmp(sym,".weak.",6);
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}
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static int slbt_util_output_mapfile_impl(
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const struct slbt_driver_ctx * dctx,
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const struct slbt_symlist_ctx * sctx,
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int fdout)
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{
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bool fcoff;
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bool fmach;
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const char ** symv;
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const char ** symstrv;
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fcoff = slbt_host_objfmt_is_coff(dctx);
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fmach = slbt_host_objfmt_is_macho(dctx);
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if (fcoff) {
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if (slbt_dprintf(fdout,"EXPORTS\n") < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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} else if (fmach) {
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if (slbt_dprintf(fdout,"# export_list, underscores prepended\n") < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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} else {
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if (slbt_dprintf(fdout,"{\n" "\t" "global:\n") < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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}
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symstrv = sctx->symstrv;
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for (symv=symstrv; *symv; symv++) {
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if (!fcoff || slbt_is_strong_coff_symbol(*symv)) {
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if (fcoff) {
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if (slbt_dprintf(fdout,"%s\n",*symv) < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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} else if (fmach) {
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if (slbt_dprintf(fdout,"_%s\n",*symv) < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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} else {
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if (slbt_dprintf(fdout,"\t\t%s;\n",*symv) < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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}
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}
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}
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if (!fcoff && !fmach)
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if (slbt_dprintf(fdout,"\n\t" "local:\n" "\t\t*;\n" "};\n") < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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return 0;
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}
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static int slbt_util_create_mapfile_impl(
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const struct slbt_symlist_ctx * sctx,
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const char * path,
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mode_t mode)
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{
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int ret;
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const struct slbt_driver_ctx * dctx;
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struct slbt_fd_ctx fdctx;
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int fdout;
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dctx = (slbt_get_symlist_ictx(sctx))->dctx;
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if (slbt_lib_get_driver_fdctx(dctx,&fdctx) < 0)
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return SLBT_NESTED_ERROR(dctx);
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if (path) {
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if ((fdout = openat(
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fdctx.fdcwd,path,
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O_WRONLY|O_CREAT|O_TRUNC,
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mode)) < 0)
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return SLBT_SYSTEM_ERROR(dctx,0);
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} else {
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fdout = fdctx.fdout;
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}
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ret = slbt_util_output_mapfile_impl(
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dctx,sctx,fdout);
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if (path) {
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close(fdout);
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}
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return ret;
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}
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int slbt_util_create_mapfile(
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const struct slbt_symlist_ctx * sctx,
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const char * path,
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mode_t mode)
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{
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return slbt_util_create_mapfile_impl(sctx,path,mode);
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}
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