Add support for Visual Studio 2019

external/libelf/src/flag.c

@@ -0,0 +1,92 @@
+/*
+flag.c - implementation of the elf_flag*(3) functions.
+Copyright (C) 1995 - 1998 Michael Riepe
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+*/
+
+#include <private.h>
+
+#ifndef lint
+static const char rcsid[] = "@(#) $Id: flag.c,v 1.7 2008/05/23 08:15:34 michael Exp $";
+#endif /* lint */
+
+static unsigned
+_elf_flag(unsigned *f, Elf_Cmd cmd, unsigned flags) {
+    if (cmd == ELF_C_SET) {
+	return *f |= flags;
+    }
+    if (cmd == ELF_C_CLR) {
+	return *f &= ~flags;
+    }
+    seterr(ERROR_INVALID_CMD);
+    return 0;
+}
+
+unsigned
+elf_flagdata(Elf_Data *data, Elf_Cmd cmd, unsigned flags) {
+    Scn_Data *sd = (Scn_Data*)data;
+
+    if (!sd) {
+	return 0;
+    }
+    elf_assert(sd->sd_magic == DATA_MAGIC);
+    return _elf_flag(&sd->sd_data_flags, cmd, flags);
+}
+
+unsigned
+elf_flagehdr(Elf *elf, Elf_Cmd cmd, unsigned flags) {
+    if (!elf) {
+	return 0;
+    }
+    elf_assert(elf->e_magic == ELF_MAGIC);
+    return _elf_flag(&elf->e_ehdr_flags, cmd, flags);
+}
+
+unsigned
+elf_flagelf(Elf *elf, Elf_Cmd cmd, unsigned flags) {
+    if (!elf) {
+	return 0;
+    }
+    elf_assert(elf->e_magic == ELF_MAGIC);
+    return _elf_flag(&elf->e_elf_flags, cmd, flags);
+}
+
+unsigned
+elf_flagphdr(Elf *elf, Elf_Cmd cmd, unsigned flags) {
+    if (!elf) {
+	return 0;
+    }
+    elf_assert(elf->e_magic == ELF_MAGIC);
+    return _elf_flag(&elf->e_phdr_flags, cmd, flags);
+}
+
+unsigned
+elf_flagscn(Elf_Scn *scn, Elf_Cmd cmd, unsigned flags) {
+    if (!scn) {
+	return 0;
+    }
+    elf_assert(scn->s_magic == SCN_MAGIC);
+    return _elf_flag(&scn->s_scn_flags, cmd, flags);
+}
+
+unsigned
+elf_flagshdr(Elf_Scn *scn, Elf_Cmd cmd, unsigned flags) {
+    if (!scn) {
+	return 0;
+    }
+    elf_assert(scn->s_magic == SCN_MAGIC);
+    return _elf_flag(&scn->s_shdr_flags, cmd, flags);
+}