initial import of NetBSD tree

1 files changed, 226 insertions, 0 deletions

diff --git a/gnu/usr.bin/ld/i386/md.h b/gnu/usr.bin/ld/i386/md.h
new file mode 100644
index 00000000000..4f5ae3d97f1
--- /dev/null
+++ b/gnu/usr.bin/ld/i386/md.h
@@ -0,0 +1,226 @@
+/*
+ * Copyright (c) 1993 Paul Kranenburg
+ * 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 Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ *
+ *	$Id: md.h,v 1.1 1995/10/18 08:40:56 deraadt Exp $
+ */
+
+
+#if defined(CROSS_LINKER) && defined(XHOST) && XHOST==sparc
+#define NEED_SWAP
+#endif
+
+#define	MAX_ALIGNMENT		(sizeof (long))
+
+#ifdef NetBSD
+#define PAGSIZ			__LDPGSZ
+#else
+#define PAGSIZ			4096
+#endif
+
+#if defined(NetBSD) || defined(CROSS_LINKER)
+
+#define N_SET_FLAG(ex,f)	(oldmagic || N_GETMAGIC(ex)==QMAGIC ? (0) : \
+					N_SETMAGIC(ex,			\
+						   N_GETMAGIC(ex),	\
+						   MID_MACHINE,		\
+						   N_GETFLAG(ex)|(f)))
+
+#define N_IS_DYNAMIC(ex)	((N_GETFLAG(ex) & EX_DYNAMIC))
+
+#define N_BADMID(ex) \
+	(N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE)
+
+#endif
+
+/*
+ * FreeBSD does it differently
+ */
+#ifdef FreeBSD
+#define N_SET_FLAG(ex,f)	(oldmagic ? (0) :			\
+				  (netzmagic == 0 ?			\
+					N_SETMAGIC(ex,			\
+						   N_GETMAGIC(ex),	\
+						   MID_MACHINE,		\
+						   N_GETFLAG(ex)|(f)) :	\
+					N_SETMAGIC_NET(ex,		\
+						   N_GETMAGIC_NET(ex),	\
+						   MID_MACHINE,		\
+						   N_GETFLAG_NET(ex)|(f)) ))
+
+#define N_IS_DYNAMIC(ex)	((N_GETMAGIC_NET(ex) == ZMAGIC) ?	\
+				((N_GETFLAG_NET(ex) & EX_DYNAMIC)) :	\
+				((N_GETFLAG(ex) & EX_DYNAMIC) ))
+#define N_BADMID(ex) 0
+#endif
+
+/*
+ * Should be handled by a.out.h ?
+ */
+#define N_ADJUST(ex)		(((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0)
+#define TEXT_START(ex)		(N_TXTADDR(ex) + N_ADJUST(ex))
+#define DATA_START(ex)		(N_DATADDR(ex) + N_ADJUST(ex))
+
+#define RELOC_STATICS_THROUGH_GOT_P(r)	(0)
+#define JMPSLOT_NEEDS_RELOC		(0)
+
+#define md_got_reloc(r)			(0)
+
+#define md_get_rt_segment_addend(r,a)	md_get_addend(r,a)
+
+/* Width of a Global Offset Table entry */
+#define GOT_ENTRY_SIZE	4
+typedef long	got_t;
+
+typedef struct jmpslot {
+	u_short	opcode;
+	u_short	addr[2];
+	u_short	reloc_index;
+#define JMPSLOT_RELOC_MASK		0xffff
+} jmpslot_t;
+
+#define NOP	0x90
+#define CALL	0xe890		/* NOP + CALL opcode */
+#define JUMP	0xe990		/* NOP + JMP opcode */
+#define TRAP	0xcc		/* INT 3 */
+
+/*
+ * Byte swap defs for cross linking
+ */
+
+#if !defined(NEED_SWAP)
+
+#define md_swapin_exec_hdr(h)
+#define md_swapout_exec_hdr(h)
+#define md_swapin_symbols(s,n)
+#define md_swapout_symbols(s,n)
+#define md_swapin_zsymbols(s,n)
+#define md_swapout_zsymbols(s,n)
+#define md_swapin_reloc(r,n)
+#define md_swapout_reloc(r,n)
+#define md_swapin__dynamic(l)
+#define md_swapout__dynamic(l)
+#define md_swapin_section_dispatch_table(l)
+#define md_swapout_section_dispatch_table(l)
+#define md_swapin_so_debug(d)
+#define md_swapout_so_debug(d)
+#define md_swapin_rrs_hash(f,n)
+#define md_swapout_rrs_hash(f,n)
+#define md_swapin_sod(l,n)
+#define md_swapout_sod(l,n)
+#define md_swapout_jmpslot(j,n)
+#define md_swapout_got(g,n)
+#define md_swapin_ranlib_hdr(h,n)
+#define md_swapout_ranlib_hdr(h,n)
+
+#endif /* NEED_SWAP */
+
+#ifdef CROSS_LINKER
+
+#define get_byte(p)	( ((unsigned char *)(p))[0] )
+
+#define get_short(p)	( ( ((unsigned char *)(p))[0] << 8) | \
+			  ( ((unsigned char *)(p))[1]     )   \
+			)
+
+#define get_long(p)	( ( ((unsigned char *)(p))[0] << 24) | \
+			  ( ((unsigned char *)(p))[1] << 16) | \
+			  ( ((unsigned char *)(p))[2] << 8 ) | \
+			  ( ((unsigned char *)(p))[3]      )   \
+			)
+
+#define put_byte(p, v)	{ ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
+
+#define put_short(p, v)	{ ((unsigned char *)(p))[0] =			\
+				((((unsigned long)(v)) >> 8) & 0xff); 	\
+			  ((unsigned char *)(p))[1] =			\
+				((((unsigned long)(v))     ) & 0xff); }
+
+#define put_long(p, v)	{ ((unsigned char *)(p))[0] =			\
+				((((unsigned long)(v)) >> 24) & 0xff); 	\
+			  ((unsigned char *)(p))[1] =			\
+				((((unsigned long)(v)) >> 16) & 0xff); 	\
+			  ((unsigned char *)(p))[2] =			\
+				((((unsigned long)(v)) >>  8) & 0xff); 	\
+			  ((unsigned char *)(p))[3] =			\
+				((((unsigned long)(v))      ) & 0xff); }
+
+#ifdef NEED_SWAP
+
+/* Define IO byte swapping routines */
+
+void	md_swapin_exec_hdr __P((struct exec *));
+void	md_swapout_exec_hdr __P((struct exec *));
+void	md_swapin_reloc __P((struct relocation_info *, int));
+void	md_swapout_reloc __P((struct relocation_info *, int));
+void	md_swapout_jmpslot __P((jmpslot_t *, int));
+
+#define md_swapin_symbols(s,n)			swap_symbols(s,n)
+#define md_swapout_symbols(s,n)			swap_symbols(s,n)
+#define md_swapin_zsymbols(s,n)			swap_zsymbols(s,n)
+#define md_swapout_zsymbols(s,n)		swap_zsymbols(s,n)
+#define md_swapin__dynamic(l)			swap__dynamic(l)
+#define md_swapout__dynamic(l)			swap__dynamic(l)
+#define md_swapin_section_dispatch_table(l)	swap_section_dispatch_table(l)
+#define md_swapout_section_dispatch_table(l)	swap_section_dispatch_table(l)
+#define md_swapin_so_debug(d)			swap_so_debug(d)
+#define md_swapout_so_debug(d)			swap_so_debug(d)
+#define md_swapin_rrs_hash(f,n)			swap_rrs_hash(f,n)
+#define md_swapout_rrs_hash(f,n)		swap_rrs_hash(f,n)
+#define md_swapin_sod(l,n)			swapin_sod(l,n)
+#define md_swapout_sod(l,n)			swapout_sod(l,n)
+#define md_swapout_got(g,n)			swap_longs((long*)(g),n)
+#define md_swapin_ranlib_hdr(h,n)		swap_ranlib_hdr(h,n)
+#define md_swapout_ranlib_hdr(h,n)		swap_ranlib_hdr(h,n)
+
+#define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) )
+
+#define md_swap_long(x) ( (((x) >> 24) & 0xff    ) | (((x) >> 8 ) & 0xff00   ) | \
+			(((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000))
+
+#else	/* We need not swap, but must pay attention to alignment: */
+
+#define md_swap_short(x)	(x)
+#define md_swap_long(x)		(x)
+
+#endif /* NEED_SWAP */
+
+#else	/* Not a cross linker: use native */
+
+#define md_swap_short(x)		(x)
+#define md_swap_long(x)			(x)
+
+#define get_byte(where)			(*(char *)(where))
+#define get_short(where)		(*(short *)(where))
+#define get_long(where)			(*(long *)(where))
+
+#define put_byte(where,what)		(*(char *)(where) = (what))
+#define put_short(where,what)		(*(short *)(where) = (what))
+#define put_long(where,what)		(*(long *)(where) = (what))
+
+#endif /* CROSS_LINKER */