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/* OpenRISC opcode support.  -*- C -*-
   Copyright 2000, 2001, 2003, 2005, 2011 Free Software Foundation, Inc.
 
   Contributed by Red Hat Inc;
 
   This file is part of the GNU Binutils.
 
   This program 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 3 of the License, or
   (at your option) any later version.
 
   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
   MA 02110-1301, USA.  */
 
/* This file is an addendum to or32.cpu.  Heavy use of C code isn't
   appropriate in .cpu files, so it resides here.  This especially applies
   to assembly/disassembly where parsing/printing can be quite involved.
   Such things aren't really part of the specification of the cpu, per se,
   so .cpu files provide the general framework and .opc files handle the
   nitty-gritty details as necessary.
 
   Each section is delimited with start and end markers.
 
   -opc.h additions use: "-- opc.h"
   -opc.c additions use: "-- opc.c"
   -asm.c additions use: "-- asm.c"
   -dis.c additions use: "-- dis.c"
   -ibd.h additions use: "-- ibd.h"  */
 
/* -- opc.h */
#undef  CGEN_DIS_HASH_SIZE
#define CGEN_DIS_HASH_SIZE 64
#undef  CGEN_DIS_HASH
#define CGEN_DIS_HASH(buffer, value) (((unsigned char *) (buffer))[0] >> 2)
 
extern long openrisc_sign_extend_16bit (long);
/* -- */
 
/* -- opc.c */
/* -- */
 
/* -- asm.c */
 
static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
 
#define CGEN_VERBOSE_ASSEMBLER_ERRORS
 
long
openrisc_sign_extend_16bit (long value)
{
  return ((value & 0xffff) ^ 0x8000) - 0x8000;
}
 
/* Handle hi().  */
 
static const char *
parse_hi16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
{
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  unsigned long ret;
 
  if (**strp == '#')
    ++*strp;
 
  if (strncasecmp (*strp, "hi(", 3) == 0)
    {
      bfd_vma value;
 
      *strp += 3;
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,
                                   & result_type, & value);
      if (**strp != ')')
        return MISSING_CLOSING_PARENTHESIS;
 
      ++*strp;
      if (errmsg == NULL
          && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
        value >>= 16;
      ret = value;
    }
  else
    {
      if (**strp == '-')
        {
          long value;
 
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          ret = value;
        }
      else
        {
          unsigned long value;
 
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          ret = value;
        }
    }
 
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  return errmsg;
}
 
/* Handle lo().  */
 
static const char *
parse_lo16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)
{
  const char *errmsg;
  enum cgen_parse_operand_result result_type;
  unsigned long ret;
 
  if (**strp == '#')
    ++*strp;
 
  if (strncasecmp (*strp, "lo(", 3) == 0)
    {
      bfd_vma value;
 
      *strp += 3;
      errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,
                                   & result_type, & value);
      if (**strp != ')')
        return MISSING_CLOSING_PARENTHESIS;
 
      ++*strp;
      ret = value;
    }
  else
    {
      if (**strp == '-')
        {
          long value;
 
          errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);
          ret = value;
        }
      else
        {
          unsigned long value;
 
          errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);
          ret = value;
        }
    }
 
  *valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;
  return errmsg;
}
 
/* -- */
 
/* -- ibd.h */
extern long openrisc_sign_extend_16bit (long);
 
/* -- */

Line No.	Rev	Author	Line
1	161	khays	`/* OpenRISC opcode support. -- C --`
2			`Copyright 2000, 2001, 2003, 2005, 2011 Free Software Foundation, Inc.`
3
4			`Contributed by Red Hat Inc;`
5
6			`This file is part of the GNU Binutils.`
7
8			`This program is free software; you can redistribute it and/or modify`
9			`it under the terms of the GNU General Public License as published by`
10			`the Free Software Foundation; either version 3 of the License, or`
11			`(at your option) any later version.`
12
13			`This program is distributed in the hope that it will be useful,`
14			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`GNU General Public License for more details.`
17
18			`You should have received a copy of the GNU General Public License`
19			`along with this program; if not, write to the Free Software`
20			`Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,`
21			`MA 02110-1301, USA. */`
22
23			`/* This file is an addendum to or32.cpu. Heavy use of C code isn't`
24			`appropriate in .cpu files, so it resides here. This especially applies`
25			`to assembly/disassembly where parsing/printing can be quite involved.`
26			`Such things aren't really part of the specification of the cpu, per se,`
27			`so .cpu files provide the general framework and .opc files handle the`
28			`nitty-gritty details as necessary.`
29
30			`Each section is delimited with start and end markers.`
31
32			`-opc.h additions use: "-- opc.h"`
33			`-opc.c additions use: "-- opc.c"`
34			`-asm.c additions use: "-- asm.c"`
35			`-dis.c additions use: "-- dis.c"`
36			`-ibd.h additions use: "-- ibd.h" */`
37
38			`/* -- opc.h */`
39			`#undef CGEN_DIS_HASH_SIZE`
40			`#define CGEN_DIS_HASH_SIZE 64`
41			`#undef CGEN_DIS_HASH`
42			`#define CGEN_DIS_HASH(buffer, value) (((unsigned char *) (buffer))[0] >> 2)`
43
44			`extern long openrisc_sign_extend_16bit (long);`
45			`/* -- */`
46
47			`/* -- opc.c */`
48			`/* -- */`
49
50			`/* -- asm.c */`
51
52			static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'");
53
54			`#define CGEN_VERBOSE_ASSEMBLER_ERRORS`
55
56			`long`
57			`openrisc_sign_extend_16bit (long value)`
58			`{`
59			`return ((value & 0xffff) ^ 0x8000) - 0x8000;`
60			`}`
61
62			`/* Handle hi(). */`
63
64			`static const char *`
65			`parse_hi16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)`
66			`{`
67			`const char *errmsg;`
68			`enum cgen_parse_operand_result result_type;`
69			`unsigned long ret;`
70
71			`if (**strp == '#')`
72			`++*strp;`
73
74			`if (strncasecmp (*strp, "hi(", 3) == 0)`
75			`{`
76			`bfd_vma value;`
77
78			`*strp += 3;`
79			`errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16,`
80			`& result_type, & value);`
81			`if (**strp != ')')`
82			`return MISSING_CLOSING_PARENTHESIS;`
83
84			`++*strp;`
85			`if (errmsg == NULL`
86			`&& result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)`
87			`value >>= 16;`
88			`ret = value;`
89			`}`
90			`else`
91			`{`
92			`if (**strp == '-')`
93			`{`
94			`long value;`
95
96			`errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);`
97			`ret = value;`
98			`}`
99			`else`
100			`{`
101			`unsigned long value;`
102
103			`errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);`
104			`ret = value;`
105			`}`
106			`}`
107
108			`*valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;`
109			`return errmsg;`
110			`}`
111
112			`/* Handle lo(). */`
113
114			`static const char *`
115			`parse_lo16 (CGEN_CPU_DESC cd, const char ** strp, int opindex, long * valuep)`
116			`{`
117			`const char *errmsg;`
118			`enum cgen_parse_operand_result result_type;`
119			`unsigned long ret;`
120
121			`if (**strp == '#')`
122			`++*strp;`
123
124			`if (strncasecmp (*strp, "lo(", 3) == 0)`
125			`{`
126			`bfd_vma value;`
127
128			`*strp += 3;`
129			`errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16,`
130			`& result_type, & value);`
131			`if (**strp != ')')`
132			`return MISSING_CLOSING_PARENTHESIS;`
133
134			`++*strp;`
135			`ret = value;`
136			`}`
137			`else`
138			`{`
139			`if (**strp == '-')`
140			`{`
141			`long value;`
142
143			`errmsg = cgen_parse_signed_integer (cd, strp, opindex, &value);`
144			`ret = value;`
145			`}`
146			`else`
147			`{`
148			`unsigned long value;`
149
150			`errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, &value);`
151			`ret = value;`
152			`}`
153			`}`
154
155			`*valuep = ((ret & 0xffff) ^ 0x8000) - 0x8000;`
156			`return errmsg;`
157			`}`
158
159			`/* -- */`
160
161			`/* -- ibd.h */`
162			`extern long openrisc_sign_extend_16bit (long);`
163
164			`/* -- */`

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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [cpu/] [openrisc.opc] - Blame information for rev 221