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