[unix-history] / gnu / usr.bin / ld / sparc / md.h

/*
 * 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 withough 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 1.2 1993/11/09 04:19:35 paul Exp $
 */

/*
 * SPARC machine dependent definitions
 */


#define	MAX_ALIGNMENT	(sizeof (double))

#ifdef NetBSD
#define PAGSIZ			__LDPGSZ

#define N_SET_FLAG(ex,f)	N_SETMAGIC(ex,N_GETMAGIC(ex), \
					MID_MACHINE, N_GETFLAG(ex)|(f))
#define N_IS_DYNAMIC(ex)	((N_GETFLAG(ex) & EX_DYNAMIC))

#else

/* Get the SunOS a.out and relocation nomenclature */
#define EX_DYNAMIC		1

#define N_IS_DYNAMIC(ex)	((ex).a_dynamic)

#define N_SET_FLAG(ex, f) {			\
	(ex).a_dynamic = ((f) & EX_DYNAMIC);	\
}

#undef  relocation_info
#define relocation_info	                reloc_info_sparc
#define r_symbolnum			r_index
#endif /* NetBSD */

/* Sparc (Sun 4) macros */
#define RELOC_ADDRESS(r)		((r)->r_address)
#define RELOC_EXTERN_P(r)		((r)->r_extern)
#define RELOC_TYPE(r)			((r)->r_symbolnum)
#define RELOC_SYMBOL(r)			((r)->r_symbolnum)
#define RELOC_MEMORY_SUB_P(r)		0
#ifdef RTLD
/* XXX - consider this making SUN_COMPAT --> repercussions on rrs.c */
#define RELOC_MEMORY_ADD_P(r)		1
#else
#define RELOC_MEMORY_ADD_P(r)		0
#endif
#define RELOC_ADD_EXTRA(r)		((r)->r_addend)
#define RELOC_PCREL_P(r) \
	(((r)->r_type >= RELOC_DISP8 && (r)->r_type <= RELOC_WDISP22) \
	 || ((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22)  \
	 || (r)->r_type == RELOC_JMP_TBL)
#define RELOC_VALUE_RIGHTSHIFT(r)	(reloc_target_rightshift[(r)->r_type])
#define RELOC_TARGET_SIZE(r)		(reloc_target_size[(r)->r_type])
#define RELOC_TARGET_BITPOS(r)		0
#define RELOC_TARGET_BITSIZE(r)		(reloc_target_bitsize[(r)->r_type])

#define RELOC_JMPTAB_P(r)		((r)->r_type == RELOC_JMP_TBL)

#define RELOC_BASEREL_P(r) \
        ((r)->r_type >= RELOC_BASE10 && (r)->r_type <= RELOC_BASE22)

#define RELOC_RELATIVE_P(r)		((r)->r_type == RELOC_RELATIVE)
#define RELOC_COPY_DAT (RELOC_RELATIVE+1)	/*XXX*/
#define RELOC_COPY_P(r)			((r)->r_type == RELOC_COPY_DAT)
#define RELOC_LAZY_P(r)			((r)->r_type == RELOC_JMP_SLOT)

#define RELOC_STATICS_THROUGH_GOT_P(r)	(1)
#define JMPSLOT_NEEDS_RELOC		(1)

#define CHECK_GOT_RELOC(r) \
		((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22)

#define md_got_reloc(r)			(-(r)->r_address)

#ifdef SUN_COMPAT
/*
 * Sun plays games with `r_addend'
 */
#define md_get_rt_segment_addend(r,a)	(0)
#endif

/* Width of a Global Offset Table entry */
typedef long	got_t;

typedef struct jmpslot {
	u_long	opcode1;
	u_long	opcode2;
	u_long	reloc_index;
#define JMPSLOT_RELOC_MASK		(0x003fffff)	/* 22 bits */
} jmpslot_t;

#define SAVE	0x9de3bfa0	/* Build stack frame (opcode1) */
#define SETHI	0x03000000	/* %hi(addr) -> %g1 (opcode1) */
#define CALL	0x40000000	/* Call instruction (opcode2) */
#define JMP	0x81c06000	/* Jump %g1 instruction (opcode2) */
#define NOP	0x01000000	/* Delay slot NOP for (reloc_index) */
#define BPT	0x91d02001	/* breakpoint: `ta 0x1' */


/*
 * 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_link_dynamic(l)
#define md_swapout_link_dynamic(l)
#define md_swapin_link_dynamic_2(l)
#define md_swapout_link_dynamic_2(l)
#define md_swapin_ld_debug(d)
#define md_swapout_ld_debug(d)
#define md_swapin_rrs_hash(f,n)
#define md_swapout_rrs_hash(f,n)
#define md_swapin_link_object(l,n)
#define md_swapout_link_object(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

#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_link_dynamic(l)	swap_link_dynamic(l)
#define md_swapout_link_dynamic(l)	swap_link_dynamic(l)
#define md_swapin_link_dynamic_2(l)	swap_link_dynamic_2(l)
#define md_swapout_link_dynamic_2(l)	swap_link_dynamic_2(l)
#define md_swapin_ld_debug(d)		swap_ld_debug(d)
#define md_swapout_ld_debug(d)		swap_ld_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_link_object(l,n)	swapin_link_object(l,n)
#define md_swapout_link_object(l,n)	swapout_link_object(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))

#define get_byte(p)	( ((unsigned char *)(p))[0] )

#define get_short(p)	( ( ((unsigned char *)(p))[1] << 8) | \
			  ( ((unsigned char *)(p))[0]     )   \
			)
#define get_long(p)	( ( ((unsigned char *)(p))[3] << 24) | \
			  ( ((unsigned char *)(p))[2] << 16) | \
			  ( ((unsigned char *)(p))[1] << 8 ) | \
			  ( ((unsigned char *)(p))[0]      )   \
			)

#define put_byte(p, v)	{ ((unsigned char *)(p))[0] = ((unsigned long)(v)); }

#define put_short(p, v)	{ ((unsigned char *)(p))[1] =			\
				((((unsigned long)(v)) >> 8) & 0xff); 	\
			  ((unsigned char *)(p))[0] =			\
				((((unsigned long)(v))     ) & 0xff); }

#define put_long(p, v)	{ ((unsigned char *)(p))[3] =			\
				((((unsigned long)(v)) >> 24) & 0xff); 	\
			  ((unsigned char *)(p))[2] =			\
				((((unsigned long)(v)) >> 16) & 0xff); 	\
			  ((unsigned char *)(p))[1] =			\
				((((unsigned long)(v)) >>  8) & 0xff); 	\
			  ((unsigned char *)(p))[0] =			\
				((((unsigned long)(v))      ) & 0xff); }

#else	/* We need not swap, but must pay attention to alignment: */

#define md_swap_short(x)	(x)
#define md_swap_long(x)		(x)

#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); }

#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 */
Commit	Line	Data
1136f72d PR	1	/*
	2	* Copyright (c) 1993 Paul Kranenburg
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by Paul Kranenburg.
	16	* 4. The name of the author may not be used to endorse or promote products
	17	* derived from this software withough specific prior written permission
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	20	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	21	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	22	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	23	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	24	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	25	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	26	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	27	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	28	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	29	*
80f25b52	30	* $Id: md.h,v 1.2 1993/11/09 04:19:35 paul Exp $
1136f72d PR	31	*/
	32
	33	/*
	34	* SPARC machine dependent definitions
	35	*/
	36
	37
	38	#define MAX_ALIGNMENT (sizeof (double))
	39
	40	#ifdef NetBSD
	41	#define PAGSIZ __LDPGSZ
	42
	43	#define N_SET_FLAG(ex,f) N_SETMAGIC(ex,N_GETMAGIC(ex), \
	44	MID_MACHINE, N_GETFLAG(ex)\|(f))
	45	#define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC))
	46
	47	#else
	48
	49	/* Get the SunOS a.out and relocation nomenclature */
	50	#define EX_DYNAMIC 1
	51
	52	#define N_IS_DYNAMIC(ex) ((ex).a_dynamic)
	53
	54	#define N_SET_FLAG(ex, f) { \
	55	(ex).a_dynamic = ((f) & EX_DYNAMIC); \
	56	}
	57
	58	#undef relocation_info
	59	#define relocation_info reloc_info_sparc
	60	#define r_symbolnum r_index
	61	#endif /* NetBSD */
	62
	63	/* Sparc (Sun 4) macros */
	64	#define RELOC_ADDRESS(r) ((r)->r_address)
	65	#define RELOC_EXTERN_P(r) ((r)->r_extern)
	66	#define RELOC_TYPE(r) ((r)->r_symbolnum)
	67	#define RELOC_SYMBOL(r) ((r)->r_symbolnum)
	68	#define RELOC_MEMORY_SUB_P(r) 0
	69	#ifdef RTLD
	70	/* XXX - consider this making SUN_COMPAT --> repercussions on rrs.c */
	71	#define RELOC_MEMORY_ADD_P(r) 1
	72	#else
	73	#define RELOC_MEMORY_ADD_P(r) 0
	74	#endif
	75	#define RELOC_ADD_EXTRA(r) ((r)->r_addend)
	76	#define RELOC_PCREL_P(r) \
	77	(((r)->r_type >= RELOC_DISP8 && (r)->r_type <= RELOC_WDISP22) \
	78	\|\| ((r)->r_type == RELOC_PC10 \|\| (r)->r_type == RELOC_PC22) \
	79	\|\| (r)->r_type == RELOC_JMP_TBL)
	80	#define RELOC_VALUE_RIGHTSHIFT(r) (reloc_target_rightshift[(r)->r_type])
	81	#define RELOC_TARGET_SIZE(r) (reloc_target_size[(r)->r_type])
	82	#define RELOC_TARGET_BITPOS(r) 0
	83	#define RELOC_TARGET_BITSIZE(r) (reloc_target_bitsize[(r)->r_type])
	84
	85	#define RELOC_JMPTAB_P(r) ((r)->r_type == RELOC_JMP_TBL)
	86
	87	#define RELOC_BASEREL_P(r) \
	88	((r)->r_type >= RELOC_BASE10 && (r)->r_type <= RELOC_BASE22)
	89
	90	#define RELOC_RELATIVE_P(r) ((r)->r_type == RELOC_RELATIVE)
	91	#define RELOC_COPY_DAT (RELOC_RELATIVE+1) /XXX/
	92	#define RELOC_COPY_P(r) ((r)->r_type == RELOC_COPY_DAT)
	93	#define RELOC_LAZY_P(r) ((r)->r_type == RELOC_JMP_SLOT)
	94
95	#define RELOC_STATICS_THROUGH_GOT_P(r) (1)
96	#define JMPSLOT_NEEDS_RELOC (1)
97
98	#define CHECK_GOT_RELOC(r) \
99	((r)->r_type == RELOC_PC10 \|\| (r)->r_type == RELOC_PC22)
100
101	#define md_got_reloc(r) (-(r)->r_address)
102
103	#ifdef SUN_COMPAT
104	/*
105	* Sun plays games with `r_addend'
106	*/
107	#define md_get_rt_segment_addend(r,a) (0)
108	#endif
109
110	/* Width of a Global Offset Table entry */
111	typedef long got_t;
112
113	typedef struct jmpslot {
114	u_long opcode1;
115	u_long opcode2;
116	u_long reloc_index;
117	#define JMPSLOT_RELOC_MASK (0x003fffff) /* 22 bits */
118	} jmpslot_t;
119
120	#define SAVE 0x9de3bfa0 /* Build stack frame (opcode1) */
121	#define SETHI 0x03000000 /* %hi(addr) -> %g1 (opcode1) */
122	#define CALL 0x40000000 /* Call instruction (opcode2) */
123	#define JMP 0x81c06000 /* Jump %g1 instruction (opcode2) */
124	#define NOP 0x01000000 /* Delay slot NOP for (reloc_index) */
80f25b52	125	#define BPT 0x91d02001 /* breakpoint: `ta 0x1' */
1136f72d PR	126
	127
	128	/*
	129	* Byte swap defs for cross linking
	130	*/
	131
	132	#if !defined(NEED_SWAP)
	133
	134	#define md_swapin_exec_hdr(h)
	135	#define md_swapout_exec_hdr(h)
	136	#define md_swapin_symbols(s,n)
	137	#define md_swapout_symbols(s,n)
	138	#define md_swapin_zsymbols(s,n)
	139	#define md_swapout_zsymbols(s,n)
	140	#define md_swapin_reloc(r,n)
	141	#define md_swapout_reloc(r,n)
	142	#define md_swapin_link_dynamic(l)
	143	#define md_swapout_link_dynamic(l)
	144	#define md_swapin_link_dynamic_2(l)
	145	#define md_swapout_link_dynamic_2(l)
	146	#define md_swapin_ld_debug(d)
	147	#define md_swapout_ld_debug(d)
	148	#define md_swapin_rrs_hash(f,n)
	149	#define md_swapout_rrs_hash(f,n)
	150	#define md_swapin_link_object(l,n)
	151	#define md_swapout_link_object(l,n)
	152	#define md_swapout_jmpslot(j,n)
	153	#define md_swapout_got(g,n)
	154	#define md_swapin_ranlib_hdr(h,n)
	155	#define md_swapout_ranlib_hdr(h,n)
	156
	157	#endif /* NEED_SWAP */
	158
	159	#ifdef CROSS_LINKER
	160
	161	#ifdef NEED_SWAP
	162
	163	/* Define IO byte swapping routines */
	164
	165	void md_swapin_exec_hdr __P((struct exec *));
	166	void md_swapout_exec_hdr __P((struct exec *));
	167	void md_swapin_reloc __P((struct relocation_info *, int));
	168	void md_swapout_reloc __P((struct relocation_info *, int));
	169	void md_swapout_jmpslot __P((jmpslot_t *, int));
	170
	171	#define md_swapin_symbols(s,n) swap_symbols(s,n)
	172	#define md_swapout_symbols(s,n) swap_symbols(s,n)
	173	#define md_swapin_zsymbols(s,n) swap_zsymbols(s,n)
	174	#define md_swapout_zsymbols(s,n) swap_zsymbols(s,n)
	175	#define md_swapin_link_dynamic(l) swap_link_dynamic(l)
	176	#define md_swapout_link_dynamic(l) swap_link_dynamic(l)
	177	#define md_swapin_link_dynamic_2(l) swap_link_dynamic_2(l)
	178	#define md_swapout_link_dynamic_2(l) swap_link_dynamic_2(l)
	179	#define md_swapin_ld_debug(d) swap_ld_debug(d)
	180	#define md_swapout_ld_debug(d) swap_ld_debug(d)
	181	#define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n)
	182	#define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n)
	183	#define md_swapin_link_object(l,n) swapin_link_object(l,n)
	184	#define md_swapout_link_object(l,n) swapout_link_object(l,n)
	185	#define md_swapout_got(g,n) swap_longs((long*)(g),n)
	186	#define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
	187	#define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
	188
	189	#define md_swap_short(x) ( (((x) >> 8) & 0xff) \| (((x) & 0xff) << 8) )
190
191	#define md_swap_long(x) ( (((x) >> 24) & 0xff ) \| (((x) >> 8 ) & 0xff00 ) \| \
192	(((x) << 8 ) & 0xff0000) \| (((x) << 24) & 0xff000000))
193
194	#define get_byte(p) ( ((unsigned char *)(p))[0] )
195
196	#define get_short(p) ( ( ((unsigned char *)(p))[1] << 8) \| \
197	( ((unsigned char *)(p))[0] ) \
198	)
199	#define get_long(p) ( ( ((unsigned char *)(p))[3] << 24) \| \
200	( ((unsigned char *)(p))[2] << 16) \| \
201	( ((unsigned char *)(p))[1] << 8 ) \| \
202	( ((unsigned char *)(p))[0] ) \
203	)
204
205	#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
206
207	#define put_short(p, v) { ((unsigned char *)(p))[1] = \
208	((((unsigned long)(v)) >> 8) & 0xff); \
209	((unsigned char *)(p))[0] = \
210	((((unsigned long)(v)) ) & 0xff); }
211
212	#define put_long(p, v) { ((unsigned char *)(p))[3] = \
213	((((unsigned long)(v)) >> 24) & 0xff); \
214	((unsigned char *)(p))[2] = \
215	((((unsigned long)(v)) >> 16) & 0xff); \
216	((unsigned char *)(p))[1] = \
217	((((unsigned long)(v)) >> 8) & 0xff); \
218	((unsigned char *)(p))[0] = \
219	((((unsigned long)(v)) ) & 0xff); }
220
221	#else /* We need not swap, but must pay attention to alignment: */
222
223	#define md_swap_short(x) (x)
224	#define md_swap_long(x) (x)
225
226	#define get_byte(p) ( ((unsigned char *)(p))[0] )
227
228	#define get_short(p) ( ( ((unsigned char *)(p))[0] << 8) \| \
229	( ((unsigned char *)(p))[1] ) \
230	)
231
232	#define get_long(p) ( ( ((unsigned char *)(p))[0] << 24) \| \
233	( ((unsigned char *)(p))[1] << 16) \| \
234	( ((unsigned char *)(p))[2] << 8 ) \| \
235	( ((unsigned char *)(p))[3] ) \
236	)
237
238
239	#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
240
241	#define put_short(p, v) { ((unsigned char *)(p))[0] = \
242	((((unsigned long)(v)) >> 8) & 0xff); \
243	((unsigned char *)(p))[1] = \
244	((((unsigned long)(v)) ) & 0xff); }
245
246	#define put_long(p, v) { ((unsigned char *)(p))[0] = \
247	((((unsigned long)(v)) >> 24) & 0xff); \
248	((unsigned char *)(p))[1] = \
249	((((unsigned long)(v)) >> 16) & 0xff); \
250	((unsigned char *)(p))[2] = \
251	((((unsigned long)(v)) >> 8) & 0xff); \
252	((unsigned char *)(p))[3] = \
253	((((unsigned long)(v)) ) & 0xff); }
254
255	#endif /* NEED_SWAP */
256
257	#else /* Not a cross linker: use native */
258
259	#define md_swap_short(x) (x)
260	#define md_swap_long(x) (x)
261
262	#define get_byte(where) ((char )(where))
263	#define get_short(where) ((short )(where))
264	#define get_long(where) ((long )(where))
265
266	#define put_byte(where,what) ((char )(where) = (what))
267	#define put_short(where,what) ((short )(where) = (what))
268	#define put_long(where,what) ((long )(where) = (what))
269
270	#endif /* CROSS_LINKER */
271