Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
2012-10-24 19:18:57 +00:00
parent f7ff71bd46
commit b41eec3f65
3222 changed files with 658579 additions and 1 deletions
--- a/simulators/gem5/ext/libelf/elf_begin.c
+++ b/simulators/gem5/ext/libelf/elf_begin.c
@ -0,0 +1,154 @@
+/*-
+ * Copyright (c) 2006 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+#include <sys/types.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <ar.h>
+#include <ctype.h>
+#include "libelf.h"
+
+#include "_libelf.h"
+
+static Elf *
+_libelf_open_object(int fd, Elf_Cmd c)
+{
+        Elf *e;
+        void *m;
+        struct stat sb;
+
+        /*
+         * 'Raw' files are always mapped with 'PROT_READ'.  At
+         * elf_update(3) time for files opened with ELF_C_RDWR the
+         * mapping is unmapped, file data is written to using write(2)
+         * and then the raw data is immediately mapped back in.
+         */
+        if (fstat(fd, &sb) < 0) {
+                LIBELF_SET_ERROR(IO, errno);
+                return (NULL);
+        }
+
+        m = NULL;
+        if ((m = mmap(NULL, (size_t) sb.st_size, PROT_READ, MAP_PRIVATE, fd,
+            (off_t) 0)) == MAP_FAILED) {
+                LIBELF_SET_ERROR(IO, errno);
+                return (NULL);
+        }
+
+        if ((e = elf_memory(m, (size_t) sb.st_size)) == NULL) {
+                (void) munmap(m, (size_t) sb.st_size);
+                return (NULL);
+        }
+
+        e->e_flags |= LIBELF_F_MMAP;
+        e->e_fd = fd;
+        e->e_cmd = c;
+
+        if (c == ELF_C_RDWR && e->e_kind == ELF_K_AR) {
+                (void) elf_end(e);
+                LIBELF_SET_ERROR(ARGUMENT, 0);
+                return (NULL);
+        }
+
+        return (e);
+}
+
+Elf *
+elf_begin(int fd, Elf_Cmd c, Elf *a)
+{
+        Elf *e;
+
+        e = NULL;
+
+        if (LIBELF_PRIVATE(version) == EV_NONE) {
+                LIBELF_SET_ERROR(SEQUENCE, 0);
+                return (NULL);
+        }
+
+        switch (c) {
+        case ELF_C_NULL:
+                return (NULL);
+
+        case ELF_C_WRITE:
+
+                if (a != NULL) { /* not allowed for ar(1) archives. */
+                        LIBELF_SET_ERROR(ARGUMENT, 0);
+                        return (NULL);
+                }
+
+                /*
+                 * Check writeability of `fd' immediately and fail if
+                 * not writeable.
+                 */
+                if (ftruncate(fd, (off_t) 0) < 0) {
+                        LIBELF_SET_ERROR(IO, errno);
+                        return (NULL);
+                }
+
+                if ((e = _libelf_allocate_elf()) != NULL) {
+                        _libelf_init_elf(e, ELF_K_ELF);
+                        e->e_byteorder = LIBELF_PRIVATE(byteorder);
+                        e->e_fd = fd;
+                        e->e_cmd = c;
+                }
+                return (e);
+
+        case ELF_C_RDWR:
+                if (a != NULL) { /* not allowed for ar(1) archives. */
+                        LIBELF_SET_ERROR(ARGUMENT, 0);
+                        return (NULL);
+                }
+                /*FALLTHROUGH*/
+        case ELF_C_READ:
+                /*
+                 * Descriptor `a' could be for a regular ELF file, or
+                 * for an ar(1) archive.
+                 */
+                if (a && (a->e_fd != fd || c != a->e_cmd)) {
+                        LIBELF_SET_ERROR(ARGUMENT, 0);
+                        return (NULL);
+                }
+
+                break;
+
+        default:
+                LIBELF_SET_ERROR(ARGUMENT, 0);
+                return (NULL);
+
+        }
+
+        if (a == NULL)
+                e = _libelf_open_object(fd, c);
+        else if (a->e_kind == ELF_K_AR)
+                e = _libelf_ar_open_member(fd, c, a);
+        else
+                (e = a)->e_activations++;
+
+        return (e);
+}