1 /* tc-cris.h -- Header file for tc-cris.c, the CRIS GAS port.
2 Copyright (C) 2000-2023 Free Software Foundation, Inc.
3
4 Contributed by Axis Communications AB, Lund, Sweden.
5 Originally written for GAS 1.38.1 by Mikael Asker.
6 Updates, BFDizing, GNUifying and ELF by Hans-Peter Nilsson.
7
8 This file is part of GAS, the GNU Assembler.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the
22 Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
24
25 /* See the GAS "internal" document for general documentation on this.
26 It is called internals.texi (internals.info when makeinfo:d), but is
27 not installed or makeinfo:d by "make info". */
28
29 /* Functions and variables that aren't declared in tc.h are declared here,
30 with the type/prototype that is used in the local extern-declaration of
31 their usage. */
32
33 #ifndef TC_CRIS
34 #define TC_CRIS
35
36 /* Multi-target support is always on. */
37 extern const char *cris_target_format (void);
38 #define TARGET_FORMAT cris_target_format ()
39
40 #define TARGET_ARCH bfd_arch_cris
41
42 extern unsigned int cris_mach (void);
43 #define TARGET_MACH (cris_mach ())
44
45 #define TARGET_BYTES_BIG_ENDIAN 0
46
47 extern const char *md_shortopts;
48 extern struct option md_longopts[];
49 extern size_t md_longopts_size;
50
51 extern const pseudo_typeS md_pseudo_table[];
52
53 #define tc_comment_chars cris_comment_chars
54 extern const char cris_comment_chars[];
55 extern const char line_comment_chars[];
56 extern const char line_separator_chars[];
57
58 /* This should be optional, since it is ignored as an escape (assumed to
59 be itself) if it is not recognized. */
60 #define ONLY_STANDARD_ESCAPES
61
62 /* Note that we do not define TC_EQUAL_IN_INSN, since its current use is
63 in the instruction rather than the operand, and thus does not come to
64 use for side-effect assignments such as "and.d [r0 = r1 + 42], r3". */
65 #define md_operand(x)
66
67 #define md_number_to_chars number_to_chars_littleendian
68 extern const struct relax_type md_cris_relax_table[];
69 #define TC_GENERIC_RELAX_TABLE md_cris_relax_table
70
71 long cris_relax_frag (segT, fragS *, long);
72
73 /* GAS only handles relaxations for pc-relative data targeting addresses
74 in the same segment, so we have to handle the rest on our own. */
75 #define md_relax_frag(SEG, FRAGP, STRETCH) \
76 ((FRAGP)->fr_symbol != NULL \
77 && S_GET_SEGMENT ((FRAGP)->fr_symbol) == (SEG) \
78 ? relax_frag (SEG, FRAGP, STRETCH) \
79 : cris_relax_frag (SEG, FRAGP, STRETCH))
80
81 #define TC_FORCE_RELOCATION(FIX) md_cris_force_relocation (FIX)
82 extern int md_cris_force_relocation (struct fix *);
83
84 #define IS_CRIS_PIC_RELOC(RTYPE) \
85 ((RTYPE) == BFD_RELOC_CRIS_16_GOT \
86 || (RTYPE) == BFD_RELOC_CRIS_32_GOT \
87 || (RTYPE) == BFD_RELOC_CRIS_16_GOTPLT \
88 || (RTYPE) == BFD_RELOC_CRIS_32_GOTPLT \
89 || (RTYPE) == BFD_RELOC_CRIS_32_GOTREL \
90 || (RTYPE) == BFD_RELOC_CRIS_32_PLT_GOTREL \
91 || (RTYPE) == BFD_RELOC_CRIS_32_PLT_PCREL)
92
93 /* Make sure we don't resolve fixups for which we want to emit dynamic
94 relocations. */
95 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
96 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
97 || IS_CRIS_PIC_RELOC ((FIX)->fx_r_type))
98
99 /* For some reloc types, don't adjust fixups by reducing to a section
100 symbol. */
101 #define tc_fix_adjustable(FIX) \
102 ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT \
103 && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY \
104 && (! IS_CRIS_PIC_RELOC ((FIX)->fx_r_type) \
105 || (FIX)->fx_r_type == BFD_RELOC_CRIS_32_GOTREL))
106
107 /* FIXME: This *should* be a redundant definition, as the
108 TC_FORCE_RELOCATION* definitions already told about the cases where
109 we *don't* want the symbol value calculated. Here we seem to answer
110 the "are you sure" question. It certainly has very little to do with
111 whether the symbol value is passed to md_apply_fix. */
112 #define MD_APPLY_SYM_VALUE(FIX) 0
113
114 /* When we have fixups against constant expressions, we get a GAS-specific
115 section symbol at no extra charge for obscure reasons in
116 adjust_reloc_syms. Since ELF outputs section symbols, it gladly
117 outputs this "*ABS*" symbol in every object. Avoid that.
118 Also, don't emit undefined symbols (that aren't used in relocations).
119 They pop up when tentatively parsing register names as symbols. */
120 #define tc_frob_symbol(symp, punt) \
121 do { \
122 if ((OUTPUT_FLAVOR == bfd_target_elf_flavour \
123 && (symp) == section_symbol (absolute_section)) \
124 || ! S_IS_DEFINED (symp)) \
125 (punt) = 1; \
126 } while (0)
127
128 #define LISTING_HEADER "GAS for CRIS"
129
130 #if 0
131 /* The testsuite does not let me define these, although they IMHO should
132 be preferred over the default. */
133 #define LISTING_WORD_SIZE 2
134 #define LISTING_LHS_WIDTH 4
135 #define LISTING_LHS_WIDTH_SECOND 4
136 #endif
137
138 /* END of declaration and definitions described in the "internals"
139 document. */
140
141 /* Do this, or we will never know what hit us when the
142 broken-word-fixes break. Do _not_ use WARN_SIGNED_OVERFLOW_WORD,
143 it is only for use with WORKING_DOT_WORD and warns about most stuff.
144 (still in 2.9.1). */
145 struct broken_word;
146 extern void tc_cris_check_adjusted_broken_word (offsetT,
147 struct broken_word *);
148 #define TC_CHECK_ADJUSTED_BROKEN_DOT_WORD(new_offset, brokw) \
149 tc_cris_check_adjusted_broken_word ((offsetT) (new_offset), brokw)
150
151 /* We don't want any implicit alignment, so we do nothing. */
152 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) do { } while (0)
153
154 /* CRIS instructions, with operands and prefixes included, are a multiple
155 of two bytes long. */
156 #define DWARF2_LINE_MIN_INSN_LENGTH 2
157
158 /* Make port immune to unwanted difference in te-generic.h vs. te-linux.h. */
159 #define LOCAL_LABELS_DOLLAR 1
160
161 #endif /* TC_CRIS */
162 /*
163 * Local variables:
164 * eval: (c-set-style "gnu")
165 * indent-tabs-mode: t
166 * End:
167 */