1 /* this is tc-z80.h
2 Copyright (C) 2005-2023 Free Software Foundation, Inc.
3
4 Contributed by Arnold Metselaar <arnold_m@operamail.com>
5
6 This file is part of GAS, the GNU Assembler.
7
8 GAS 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, or (at your option)
11 any later version.
12
13 GAS 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 GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
21 02110-1301, USA. */
22
23 #ifndef TC_Z80
24 #define TC_Z80
25
26 #define TARGET_ARCH bfd_arch_z80
27 #ifndef OBJ_COFF
28 #define TARGET_FORMAT "elf32-z80"
29 #endif
30 #define BFD_ARCH TARGET_ARCH
31 #define TARGET_BYTES_BIG_ENDIAN 0
32
33 /* If you define this macro, GAS will warn about the
34 use of nonstandard escape sequences in a string. */
35 #define ONLY_STANDARD_ESCAPES
36
37 /* GAS will call this function for any expression that can not be
38 recognized. When the function is called, `input_line_pointer'
39 will point to the start of the expression. */
40 #define md_operand(x)
41
42 /* This should just call either `number_to_chars_bigendian' or
43 `number_to_chars_littleendian', whichever is appropriate. On
44 targets like the MIPS which support options to change the
45 endianness, which function to call is a runtime decision. On
46 other targets, `md_number_to_chars' can be a simple macro. */
47 #define md_number_to_chars number_to_chars_littleendian
48
49 #define TC_COUNT_RELOC(x) 1
50
51 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
52 #define md_convert_frag(b,s,f) as_fatal ("convert_frag called\n")
53 #define md_estimate_size_before_relax(f,s) \
54 (as_fatal (_("estimate_size_before_relax called")), 1)
55
56 /* Define some functions to be called by generic code. */
57 #define md_finish z80_md_finish
58 #define md_start_line_hook() { if (z80_start_line_hook ()) continue; }
59 #define TC_CONS_FIX_NEW(f,w,s,e,r) z80_cons_fix_new ((f), (w), (s), (e))
60
61 extern void z80_md_finish (void);
62 extern int z80_start_line_hook (void);
63 extern void z80_cons_fix_new (fragS *, int, int, expressionS *);
64
65 #define WORKING_DOT_WORD
66
67 /* If you define this macro, it means that `tc_gen_reloc' may return
68 multiple relocation entries for a single fixup. In this case, the
69 return value of `tc_gen_reloc' is a pointer to a null terminated
70 array. */
71 #undef RELOC_EXPANSION_POSSIBLE
72
73 /* No shared lib support, so we don't need to ensure
74 externally visible symbols can be overridden. */
75 #define EXTERN_FORCE_RELOC 0
76
77 /* Values passed to md_apply_fix3 don't include the symbol value. */
78 #define MD_APPLY_SYM_VALUE(FIX) 0
79
80 #define LISTING_WORD_SIZE 1
81
82 /* A single '=' is accepted as a comparison operator. */
83 #define O_SINGLE_EQ O_eq
84
85 /* A '$' is used to refer to the current location or as a hex. prefix. */
86 #define DOLLAR_DOT
87 #define DOLLAR_AMBIGU 1
88 #define LOCAL_LABEL_PREFIX '.'
89 #define LOCAL_LABELS_FB 1
90 #define LOCAL_LABELS_DOLLAR 1
91 #define LITERAL_PREFIXPERCENT_BIN
92 #define NUMBERS_WITH_SUFFIX 1
93 #define NO_PSEUDO_DOT 1
94 /* We allow single quotes to delimit character constants as
95 well, but it is cleaner to handle that in tc-z80.c. */
96 #define SINGLE_QUOTE_STRINGS
97
98 #define LABELS_WITHOUT_COLONS (z80_tc_labels_without_colon())
99 extern int z80_tc_labels_without_colon (void);
100
101 /* An `.lcomm' directive with no explicit alignment parameter will
102 use this macro to set P2VAR to the alignment that a request for
103 SIZE bytes will have. The alignment is expressed as a power of
104 two. If no alignment should take place, the macro definition
105 should do nothing. Some targets define a `.bss' directive that is
106 also affected by this macro. The default definition will set
107 P2VAR to the truncated power of two of sizes up to eight bytes. */
108 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
109
110 /* It does not make any sense to perform arithmetic on the numbers
111 we use to identify registers. */
112 #define md_register_arithmetic 0
113
114 #define TC_LABEL_IS_LOCAL z80_tc_label_is_local
115 extern int z80_tc_label_is_local (const char *name);
116
117 #define elf_tc_final_processing z80_elf_final_processing
118 extern void z80_elf_final_processing (void);
119
120 /* Define the column that represents the PC. */
121 #define DWARF2_DEFAULT_RETURN_COLUMN 5
122
123 /* The stack grows down, and is only byte aligned. */
124 #define DWARF2_CIE_DATA_ALIGNMENT -1
125
126 /* Z80 instructions are 1 or 4 bytes long. */
127 #define DWARF2_LINE_MIN_INSN_LENGTH 1
128
129 /* 16 bits addresses are used on Z80. */
130 #define DWARF2_ADDR_SIZE(bfd) z80_dwarf2_addr_size(bfd)
131 extern int z80_dwarf2_addr_size (const bfd *abfd);
132
133 /* CFI hooks. */
134 #define tc_cfi_frame_initial_instructions z80_tc_frame_initial_instructions
135 extern void z80_tc_frame_initial_instructions (void);
136
137 #define tc_regname_to_dw2regnum z80_tc_regname_to_dw2regnum
138 extern int z80_tc_regname_to_dw2regnum (const char *regname);
139
140 #endif