1 /* this is tc-z80.h 2 Copyright (C) 2005-2021 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 COFF_MAGIC 0x5A80 32 #define TARGET_BYTES_BIG_ENDIAN 0 33 34 /* If you define this macro, GAS will warn about the 35 use of nonstandard escape sequences in a string. */ 36 #define ONLY_STANDARD_ESCAPES 37 38 /* GAS will call this function for any expression that can not be 39 recognized. When the function is called, `input_line_pointer' 40 will point to the start of the expression. */ 41 #define md_operand(x) 42 43 /* This should just call either `number_to_chars_bigendian' or 44 `number_to_chars_littleendian', whichever is appropriate. On 45 targets like the MIPS which support options to change the 46 endianness, which function to call is a runtime decision. On 47 other targets, `md_number_to_chars' can be a simple macro. */ 48 #define md_number_to_chars number_to_chars_littleendian 49 50 #define TC_COUNT_RELOC(x) 1 51 52 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP) 53 #define md_convert_frag(b,s,f) as_fatal ("convert_frag called\n") 54 #define md_estimate_size_before_relax(f,s) \ 55 (as_fatal (_("estimate_size_before_relax called")), 1) 56 57 /* Define some functions to be called by generic code. */ 58 #define md_end z80_md_end 59 #define md_start_line_hook() { if (z80_start_line_hook ()) continue; } 60 #define TC_CONS_FIX_NEW(f,w,s,e,r) z80_cons_fix_new ((f), (w), (s), (e)) 61 62 extern void z80_md_end (void); 63 extern int z80_start_line_hook (void); 64 extern void z80_cons_fix_new (fragS *, int, int, expressionS *); 65 66 #define WORKING_DOT_WORD 67 68 /* If you define this macro, it means that `tc_gen_reloc' may return 69 multiple relocation entries for a single fixup. In this case, the 70 return value of `tc_gen_reloc' is a pointer to a null terminated 71 array. */ 72 #undef RELOC_EXPANSION_POSSIBLE 73 74 /* No shared lib support, so we don't need to ensure 75 externally visible symbols can be overridden. */ 76 #define EXTERN_FORCE_RELOC 0 77 78 /* Values passed to md_apply_fix3 don't include the symbol value. */ 79 #define MD_APPLY_SYM_VALUE(FIX) 0 80 81 #define LISTING_WORD_SIZE 1 82 83 /* A single '=' is accepted as a comparison operator. */ 84 #define O_SINGLE_EQ O_eq 85 86 /* A '$' is used to refer to the current location or as a hex. prefix. */ 87 #define DOLLAR_DOT 88 #define DOLLAR_AMBIGU 1 89 #define LOCAL_LABEL_PREFIX '.' 90 #define LOCAL_LABELS_FB 1 91 #define LOCAL_LABELS_DOLLAR 1 92 #define LITERAL_PREFIXPERCENT_BIN 93 #define NUMBERS_WITH_SUFFIX 1 94 #define NO_PSEUDO_DOT 1 95 /* We allow single quotes to delimit character constants as 96 well, but it is cleaner to handle that in tc-z80.c. */ 97 #define SINGLE_QUOTE_STRINGS 98 99 #define LABELS_WITHOUT_COLONS (z80_tc_labels_without_colon()) 100 extern int z80_tc_labels_without_colon (void); 101 102 /* An `.lcomm' directive with no explicit alignment parameter will 103 use this macro to set P2VAR to the alignment that a request for 104 SIZE bytes will have. The alignment is expressed as a power of 105 two. If no alignment should take place, the macro definition 106 should do nothing. Some targets define a `.bss' directive that is 107 also affected by this macro. The default definition will set 108 P2VAR to the truncated power of two of sizes up to eight bytes. */ 109 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0 110 111 /* It does not make any sense to perform arithmetic on the numbers 112 we use to identify registers. */ 113 #define md_register_arithmetic 0 114 115 #define TC_LABEL_IS_LOCAL z80_tc_label_is_local 116 extern int z80_tc_label_is_local (const char *name); 117 118 #define elf_tc_final_processing z80_elf_final_processing 119 extern void z80_elf_final_processing (void); 120 121 /* Define the column that represents the PC. */ 122 #define DWARF2_DEFAULT_RETURN_COLUMN 5 123 124 /* The stack grows down, and is only byte aligned. */ 125 #define DWARF2_CIE_DATA_ALIGNMENT -1 126 127 /* Z80 instructions are 1 or 4 bytes long. */ 128 #define DWARF2_LINE_MIN_INSN_LENGTH 1 129 130 /* 16 bits addresses are used on Z80. */ 131 #define DWARF2_ADDR_SIZE(bfd) z80_dwarf2_addr_size(bfd) 132 extern int z80_dwarf2_addr_size (const bfd *abfd); 133 134 /* CFI hooks. */ 135 #define tc_cfi_frame_initial_instructions z80_tc_frame_initial_instructions 136 extern void z80_tc_frame_initial_instructions (void); 137 138 #define tc_regname_to_dw2regnum z80_tc_regname_to_dw2regnum 139 extern int z80_tc_regname_to_dw2regnum (const char *regname); 140 141 #endif 142