[deliverable/binutils-gdb.git] / bfd / coff-a29k.c

/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
   Contributed by David Wood at New York University 7/8/91

This file is part of BFD, the Binary File Diddler.

BFD is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.

BFD 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with BFD; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */


/* $Id$ */

#define A29K 1

#include <ansidecl.h>
#include <sysdep.h>
#include "bfd.h"
#include "libbfd.h"
#include "obstack.h"
#include "amdcoff.h"
#include "internalcoff.h"
#include "libcoff.h"

#define INSERT_HWORD(WORD,HWORD)	\
	(((WORD) & 0xff00ff00) | (((HWORD) & 0xff00) << 8) | ((HWORD)& 0xff))
#define EXTRACT_HWORD(WORD) 	(((WORD) & 0x00ff0000) >> 8) | ((WORD) & 0xff)

/* Provided the symbol, returns the value reffed */
static  long
get_symbol_value(symbol)       
asymbol *symbol;
{                                             
  long relocation = 0;

  if (symbol != (asymbol *)NULL) {              
    if (symbol->flags & BSF_FORT_COMM) {        
      relocation = 0;                           
    } else {                                      
      relocation = symbol->value;               
    }                                           
    if (symbol->section != (asection *)NULL) {    
      relocation += symbol->section->output_section->vma +
        	symbol->section->output_offset;           
    }                                             
  }
  return(relocation);
}

static bfd_reloc_status_enum_type
a29k_reloc(abfd, reloc_entry, symbol_in, data, input_section)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol_in;
unsigned char *data;
asection *input_section;
{
	static unsigned long part1_consth_active=0;
	static unsigned long part1_consth_value;
	unsigned long insn, value, sym_value; 
	unsigned short r_type;
/*  	bfd_reloc_status_enum_type result;*/
/*  	coff_symbol_type *cs = coffsymbol(symbol_in);*/
	
	r_type = reloc_entry->howto->type;

        /* FIXME: Do we need to check for partial linking here */
        if (symbol_in && (symbol_in->flags & BSF_UNDEFINED)) {
		/* Keep the state machine happy in case we're called again */
		if (r_type == R_IHIHALF) {
			part1_consth_active = 1;
			part1_consth_value  = 0;
		}
                return(bfd_reloc_undefined);
	}

	if ((part1_consth_active) && (r_type != R_IHCONST)) {
		fprintf(stderr,"Relocation problem : ");
		fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename);
		part1_consth_active = 0;
		return(bfd_reloc_dangerous);
	}

	insn = bfd_get_32(abfd, data + reloc_entry->address); 
	sym_value = get_symbol_value(symbol_in);

	switch (r_type) {
	case R_IREL: 	
		value = EXTRACT_HWORD(insn) << 2;
		value +=  sym_value + reloc_entry->addend;
		if (value <= 0x3ffff) {		/* Absolute jmp/call */
			insn |= 0x01000000;	/* Make it absolute */
			/* FIXME: Should we change r_type to R_IABS */
		} else {			/* Relative jmp/call */
			value -= reloc_entry->address;
			if (value > 0x3ffff) {
				fprintf(stderr,"Relocation problem : ");
				fprintf(stderr,"Jmp/call too far; to %d from %s\n",
					symbol_in->name,abfd->filename); 
				return(bfd_reloc_outofrange);
			}
		}
		value >>= 2;
		insn = INSERT_HWORD(insn,value);
		break;
	case R_ILOHALF: 
		value = EXTRACT_HWORD(insn);
		value +=  sym_value + reloc_entry->addend;
		insn = INSERT_HWORD(insn,value);
		break;
	case R_IHIHALF: 	/* consth, part 1 */
		/* Just get the symbol value that is referenced */
		part1_consth_active = 1;
		part1_consth_value = sym_value + reloc_entry->addend;
		return(bfd_reloc_ok);	/* Don't modify insn until R_IHCONST */
		break;
	case R_IHCONST: 	/* consth, part 2 */
		/* Now relocate the reference */
		if (!part1_consth_active) {
			fprintf(stderr,"Relocation problem : ");
			fprintf(stderr,"IHIHALF missing in module %s\n",
				abfd->filename); 
			part1_consth_active = 0;
			return(bfd_reloc_dangerous);
		}
		/* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
		value = (unsigned int)reloc_entry->addend; /* r_symndx */
		value += part1_consth_value;
		value >>= 16;
		insn = INSERT_HWORD(insn,value);
		part1_consth_active = 0;
		break;
	case R_BYTE:
		value = (insn >> 24) + sym_value + reloc_entry->addend;	
		if (value & 0xffffff00) {
			fprintf(stderr,"Relocation problem : ");
			fprintf(stderr,"byte value too large in module %s\n",
				abfd->filename); 
			return(bfd_reloc_overflow);
		}
		insn = (insn & 0x00ffffff) | (value << 24);
		break;
	case R_HWORD:
		value = (insn >> 16) + sym_value + reloc_entry->addend;	
		if (value & 0xffff0000) {
			fprintf(stderr,"Relocation problem : ");
			fprintf(stderr,"hword value too large in module %s\n",
				abfd->filename); 
			return(bfd_reloc_overflow);
		}
		insn = (insn & 0x0000ffff) | (value<<16); 
		break;
	case R_WORD:
		insn += sym_value + reloc_entry->addend;  
		break;
	default:
		fprintf(stderr,"Relocation problem : ");
		fprintf(stderr,"Unrecognized reloc type %d, in module %s\n",
				r_type,abfd->filename); 
		return (bfd_reloc_dangerous);
	}

	bfd_put_32(abfd, insn, data+reloc_entry->address);
	return(bfd_reloc_ok);	
}

/*      type	   rightshift
		       size
			  bitsize
			       pc-relative
				     bitpos
					 absolute
					     complain_on_overflow
						  special_function
						    relocation name
							       partial_inplace 
								      src_mask
*/

/*FIXME: I'm not real sure about this table */
#define NA	0	/* Obsolete fields, via the documentation */
static reloc_howto_type howto_table[] = 
{
  {R_ABS,     0, 3, NA, false, NA, NA, true,a29k_reloc,"ABS",     true, 0xffffffff,0xffffffff, false},
  {1},  {2},  {3},   {4},  {5},  {6},  {7},  {8},  {9}, {10},
  {11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
  {21}, {22}, {23},
  {R_IREL,    0, 3, NA, true,  NA, NA, true,a29k_reloc,"IREL",    true, 0xffffffff,0xffffffff, false},
  {R_IABS,    0, 3, NA, false, NA, NA, true,a29k_reloc,"IABS",    true, 0xffffffff,0xffffffff, false},
  {R_ILOHALF, 0, 3, NA, true,  NA, NA, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
  {R_IHIHALF, 0, 3, NA, true,  NA, NA, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
  {R_IHCONST, 0, 3, NA, true,  NA, NA, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
  {R_BYTE,    0, 0, NA, false, NA, NA, true,a29k_reloc,"BYTE",    true, 0x000000ff,0x000000ff, false},
  {R_HWORD,   0, 1, NA, false, NA, NA, true,a29k_reloc,"HWORD",   true, 0x0000ffff,0x0000ffff, false},
  {R_WORD,    0, 2, NA, false, NA, NA, true,a29k_reloc,"WORD",    true, 0xffffffff,0xffffffff, false},
};
#undef NA

#define BADMAG(x) A29KBADMAG(x)

#include "coffcode.h"

bfd_target a29kcoff_big_vec =
{
  "coff-a29k-big",		/* name */
  bfd_target_coff_flavour_enum,
  true,				/* data byte order is big */
  true,				/* header byte order is big */

  (HAS_RELOC | EXEC_P |		/* object flags */
   HAS_LINENO | HAS_DEBUG |
   HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT),

  (SEC_HAS_CONTENTS | SEC_ALLOC /* section flags */
	| SEC_LOAD | SEC_RELOC  
	| SEC_READONLY ),
  '/',				/* ar_pad_char */
  15,				/* ar_max_namelen */

     3,				/* minimum section alignment */
_do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
_do_getb64, _do_putb64,  _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */


  {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
     bfd_generic_archive_p, _bfd_dummy_target},
  {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
     bfd_false},
  {bfd_false, coff_write_object_contents,	/* bfd_write_contents */
     _bfd_write_archive_contents, bfd_false},

     JUMP_TABLE(coff),
     COFF_SWAP_TABLE
  };
Commit	Line	Data
2013f9b4 SC	1	/* Copyright (C) 1990, 1991 Free Software Foundation, Inc.
	2	Contributed by David Wood at New York University 7/8/91
	3
	4	This file is part of BFD, the Binary File Diddler.
	5
	6	BFD is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 1, or (at your option)
	9	any later version.
	10
	11	BFD is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with BFD; see the file COPYING. If not, write to
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20
	21	/* $Id$ */
	22
	23	#define A29K 1
	24
	25	#include <ansidecl.h>
	26	#include <sysdep.h>
	27	#include "bfd.h"
	28	#include "libbfd.h"
	29	#include "obstack.h"
	30	#include "amdcoff.h"
	31	#include "internalcoff.h"
	32	#include "libcoff.h"
	33
	34	#define INSERT_HWORD(WORD,HWORD) \
	35	(((WORD) & 0xff00ff00) \| (((HWORD) & 0xff00) << 8) \| ((HWORD)& 0xff))
	36	#define EXTRACT_HWORD(WORD) (((WORD) & 0x00ff0000) >> 8) \| ((WORD) & 0xff)
	37
	38	/* Provided the symbol, returns the value reffed */
	39	static long
	40	get_symbol_value(symbol)
	41	asymbol *symbol;
	42	{
	43	long relocation = 0;
	44
	45	if (symbol != (asymbol *)NULL) {
	46	if (symbol->flags & BSF_FORT_COMM) {
	47	relocation = 0;
	48	} else {
	49	relocation = symbol->value;
	50	}
	51	if (symbol->section != (asection *)NULL) {
	52	relocation += symbol->section->output_section->vma +
	53	symbol->section->output_offset;
	54	}
	55	}
	56	return(relocation);
	57	}
	58
	59	static bfd_reloc_status_enum_type
	60	a29k_reloc(abfd, reloc_entry, symbol_in, data, input_section)
	61	bfd *abfd;
	62	arelent *reloc_entry;
	63	asymbol *symbol_in;
	64	unsigned char *data;
65	asection *input_section;
66	{
67	static unsigned long part1_consth_active=0;
68	static unsigned long part1_consth_value;
69	unsigned long insn, value, sym_value;
70	unsigned short r_type;
71	/* bfd_reloc_status_enum_type result;*/
72	/* coff_symbol_type cs = coffsymbol(symbol_in);/
73
74	r_type = reloc_entry->howto->type;
75
76	/* FIXME: Do we need to check for partial linking here */
77	if (symbol_in && (symbol_in->flags & BSF_UNDEFINED)) {
78	/* Keep the state machine happy in case we're called again */
79	if (r_type == R_IHIHALF) {
80	part1_consth_active = 1;
81	part1_consth_value = 0;
82	}
83	return(bfd_reloc_undefined);
84	}
85
86	if ((part1_consth_active) && (r_type != R_IHCONST)) {
87	fprintf(stderr,"Relocation problem : ");
88	fprintf(stderr,"Missing IHCONST in module %s\n",abfd->filename);
89	part1_consth_active = 0;
90	return(bfd_reloc_dangerous);
91	}
92
93	insn = bfd_get_32(abfd, data + reloc_entry->address);
94	sym_value = get_symbol_value(symbol_in);
95
96	switch (r_type) {
97	case R_IREL:
98	value = EXTRACT_HWORD(insn) << 2;
99	value += sym_value + reloc_entry->addend;
100	if (value <= 0x3ffff) { /* Absolute jmp/call */
101	insn \|= 0x01000000; /* Make it absolute */
102	/* FIXME: Should we change r_type to R_IABS */
103	} else { /* Relative jmp/call */
104	value -= reloc_entry->address;
105	if (value > 0x3ffff) {
106	fprintf(stderr,"Relocation problem : ");
107	fprintf(stderr,"Jmp/call too far; to %d from %s\n",
108	symbol_in->name,abfd->filename);
109	return(bfd_reloc_outofrange);
110	}
111	}
112	value >>= 2;
113	insn = INSERT_HWORD(insn,value);
114	break;
115	case R_ILOHALF:
116	value = EXTRACT_HWORD(insn);
117	value += sym_value + reloc_entry->addend;
118	insn = INSERT_HWORD(insn,value);
119	break;
120	case R_IHIHALF: /* consth, part 1 */
121	/* Just get the symbol value that is referenced */
122	part1_consth_active = 1;
123	part1_consth_value = sym_value + reloc_entry->addend;
124	return(bfd_reloc_ok); /* Don't modify insn until R_IHCONST */
125	break;
126	case R_IHCONST: /* consth, part 2 */
127	/* Now relocate the reference */
128	if (!part1_consth_active) {
129	fprintf(stderr,"Relocation problem : ");
130	fprintf(stderr,"IHIHALF missing in module %s\n",
131	abfd->filename);
132	part1_consth_active = 0;
133	return(bfd_reloc_dangerous);
134	}
135	/* sym_ptr_ptr = r_symndx, in coff_slurp_reloc_table() */
136	value = (unsigned int)reloc_entry->addend; /* r_symndx */
137	value += part1_consth_value;
138	value >>= 16;
139	insn = INSERT_HWORD(insn,value);
140	part1_consth_active = 0;
141	break;
142	case R_BYTE:
143	value = (insn >> 24) + sym_value + reloc_entry->addend;
144	if (value & 0xffffff00) {
145	fprintf(stderr,"Relocation problem : ");
146	fprintf(stderr,"byte value too large in module %s\n",
147	abfd->filename);
148	return(bfd_reloc_overflow);
149	}
150	insn = (insn & 0x00ffffff) \| (value << 24);
151	break;
152	case R_HWORD:
153	value = (insn >> 16) + sym_value + reloc_entry->addend;
154	if (value & 0xffff0000) {
155	fprintf(stderr,"Relocation problem : ");
156	fprintf(stderr,"hword value too large in module %s\n",
157	abfd->filename);
158	return(bfd_reloc_overflow);
159	}
160	insn = (insn & 0x0000ffff) \| (value<<16);
161	break;
162	case R_WORD:
163	insn += sym_value + reloc_entry->addend;
164	break;
165	default:
166	fprintf(stderr,"Relocation problem : ");
167	fprintf(stderr,"Unrecognized reloc type %d, in module %s\n",
168	r_type,abfd->filename);
169	return (bfd_reloc_dangerous);
170	}
171
172	bfd_put_32(abfd, insn, data+reloc_entry->address);
173	return(bfd_reloc_ok);
174	}
175
176	/* type rightshift
177	size
178	bitsize
179	pc-relative
180	bitpos
181	absolute
182	complain_on_overflow
183	special_function
184	relocation name
185	partial_inplace
186	src_mask
187	*/
188
189	/FIXME: I'm not real sure about this table /
190	#define NA 0 /* Obsolete fields, via the documentation */
191	static reloc_howto_type howto_table[] =
192	{
193	{R_ABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"ABS", true, 0xffffffff,0xffffffff, false},
194	{1}, {2}, {3}, {4}, {5}, {6}, {7}, {8}, {9}, {10},
195	{11}, {12}, {13}, {14}, {15}, {16}, {17}, {18}, {19}, {20},
196	{21}, {22}, {23},
197	{R_IREL, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IREL", true, 0xffffffff,0xffffffff, false},
198	{R_IABS, 0, 3, NA, false, NA, NA, true,a29k_reloc,"IABS", true, 0xffffffff,0xffffffff, false},
199	{R_ILOHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"ILOHALF", true, 0x0000ffff,0x0000ffff, false},
200	{R_IHIHALF, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHIHALF", true, 0xffff0000,0xffff0000, false},
201	{R_IHCONST, 0, 3, NA, true, NA, NA, true,a29k_reloc,"IHCONST", true, 0xffff0000,0xffff0000, false},
202	{R_BYTE, 0, 0, NA, false, NA, NA, true,a29k_reloc,"BYTE", true, 0x000000ff,0x000000ff, false},
203	{R_HWORD, 0, 1, NA, false, NA, NA, true,a29k_reloc,"HWORD", true, 0x0000ffff,0x0000ffff, false},
204	{R_WORD, 0, 2, NA, false, NA, NA, true,a29k_reloc,"WORD", true, 0xffffffff,0xffffffff, false},
205	};
206	#undef NA
207
208	#define BADMAG(x) A29KBADMAG(x)
209
210	#include "coffcode.h"
211
212	bfd_target a29kcoff_big_vec =
213	{
214	"coff-a29k-big", /* name */
215	bfd_target_coff_flavour_enum,
216	true, /* data byte order is big */
217	true, /* header byte order is big */
218
219	(HAS_RELOC \| EXEC_P \| /* object flags */
220	HAS_LINENO \| HAS_DEBUG \|
221	HAS_SYMS \| HAS_LOCALS \| DYNAMIC \| WP_TEXT),
222
223	(SEC_HAS_CONTENTS \| SEC_ALLOC /* section flags */
224	\| SEC_LOAD \| SEC_RELOC
225	\| SEC_READONLY ),
226	'/', /* ar_pad_char */
227	15, /* ar_max_namelen */
228
229	3, /* minimum section alignment */
230	_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */
231	_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */
232
233
234	{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
235	bfd_generic_archive_p, _bfd_dummy_target},
236	{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
237	bfd_false},
238	{bfd_false, coff_write_object_contents, /* bfd_write_contents */
239	_bfd_write_archive_contents, bfd_false},
240
241	JUMP_TABLE(coff),
242	COFF_SWAP_TABLE
243	};
244