xnu-4570.1.46.tar.gz

[apple/xnu.git] / bsd / arm / exec.h

diff --git a/bsd/arm/exec.h b/bsd/arm/exec.h
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+++ b/bsd/arm/exec.h
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+/*
+ * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ */
+/*-
+ * Copyright (c) 1992, 1993
+ *     The Regents of the University of California.  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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ *     @(#)exec.h      8.1 (Berkeley) 6/11/93
+ */
+
+#ifndef _BSD_ARM_EXEC_H_
+#define _BSD_ARM_EXEC_H_
+
+
+#ifdef BSD_KERNEL_PRIVATE
+/* Size of a page in an object file. */
+#define        __LDPGSZ        4096
+
+/* Valid magic number check. */
+#define        N_BADMAG(ex) \
+       ((ex).a_magic != NMAGIC && (ex).a_magic != OMAGIC && \
+           (ex).a_magic != ZMAGIC)
+
+/* Address of the bottom of the text segment. */
+#define N_TXTADDR(X)   0
+
+/* Address of the bottom of the data segment. */
+#define N_DATADDR(ex) \
+       (N_TXTADDR(ex) + ((ex).a_magic == OMAGIC ? (ex).a_text \
+       : __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
+
+/* Text segment offset. */
+#define        N_TXTOFF(ex) \
+       ((ex).a_magic == ZMAGIC ? __LDPGSZ : sizeof(struct exec))
+
+/* Data segment offset. */
+#define        N_DATOFF(ex) \
+       (N_TXTOFF(ex) + ((ex).a_magic != ZMAGIC ? (ex).a_text : \
+       __LDPGSZ + ((ex).a_text - 1 & ~(__LDPGSZ - 1))))
+
+/* Symbol table offset. */
+#define N_SYMOFF(ex) \
+       (N_TXTOFF(ex) + (ex).a_text + (ex).a_data + (ex).a_trsize + \
+           (ex).a_drsize)
+
+/* String table offset. */
+#define        N_STROFF(ex)    (N_SYMOFF(ex) + (ex).a_syms)
+
+/* Description of the object file header (a.out format). */
+struct exec {
+#define        OMAGIC  0407            /* old impure format */
+#define        NMAGIC  0410            /* read-only text */
+#define        ZMAGIC  0413            /* demand load format */
+#define QMAGIC 0314            /* demand load format. Header in text. */
+       unsigned int    a_magic;        /* magic number */
+
+       unsigned int    a_text;         /* text segment size */
+       unsigned int    a_data;         /* initialized data size */
+       unsigned int    a_bss;          /* uninitialized data size */
+       unsigned int    a_syms;         /* symbol table size */
+       unsigned int    a_entry;        /* entry point */
+       unsigned int    a_trsize;       /* text relocation size */
+       unsigned int    a_drsize;       /* data relocation size */
+};
+
+#endif /* BSD_KERNEL_PRIVATE */
+
+#endif /* _BSD_ARM_EXEC_H_ */