1/* This file is tc-msp430.h 2 Copyright (C) 2002-2020 Free Software Foundation, Inc. 3 4 Contributed by Dmitry Diky <diwil@mail.ru> 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#define TC_MSP430 24/* By convention, you should define this macro in the `.h' file. For 25 example, `tc-m68k.h' defines `TC_M68K'. You might have to use this 26 if it is necessary to add CPU specific code to the object format 27 file. */ 28 29#define TARGET_FORMAT "elf32-msp430" 30/* This macro is the BFD target name to use when creating the output 31 file. This will normally depend upon the `OBJ_FMT' macro. */ 32 33#define TARGET_ARCH bfd_arch_msp430 34/* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */ 35 36#define TARGET_MACH 0 37/* This macro is the BFD machine number to pass to 38 `bfd_set_arch_mach'. If it is not defined, GAS will use 0. */ 39 40#define TARGET_BYTES_BIG_ENDIAN 0 41/* You should define this macro to be non-zero if the target is big 42 endian, and zero if the target is little endian. */ 43 44#define ONLY_STANDARD_ESCAPES 45/* If you define this macro, GAS will warn about the use of 46 nonstandard escape sequences in a string. */ 47 48#define md_operand(x) 49/* GAS will call this function for any expression that can not be 50 recognized. When the function is called, `input_line_pointer' 51 will point to the start of the expression. */ 52 53#define md_number_to_chars number_to_chars_littleendian 54/* This should just call either `number_to_chars_bigendian' or 55 `number_to_chars_littleendian', whichever is appropriate. On 56 targets like the MIPS which support options to change the 57 endianness, which function to call is a runtime decision. On 58 other targets, `md_number_to_chars' can be a simple macro. */ 59 60#define WORKING_DOT_WORD 61/* 62`md_short_jump_size' 63`md_long_jump_size' 64`md_create_short_jump' 65`md_create_long_jump' 66 If `WORKING_DOT_WORD' is defined, GAS will not do broken word 67 processing (*note Broken words::.). Otherwise, you should set 68 `md_short_jump_size' to the size of a short jump (a jump that is 69 just long enough to jump around a long jmp) and 70 `md_long_jump_size' to the size of a long jump (a jump that can go 71 anywhere in the function), You should define 72 `md_create_short_jump' to create a short jump around a long jump, 73 and define `md_create_long_jump' to create a long jump. */ 74 75#define MD_APPLY_FIX3 76/* Values passed to md_apply_fix don't include symbol values. */ 77#define MD_APPLY_SYM_VALUE(FIX) 0 78 79#define TC_HANDLES_FX_DONE 80 81#undef RELOC_EXPANSION_POSSIBLE 82/* If you define this macro, it means that `tc_gen_reloc' may return 83 multiple relocation entries for a single fixup. In this case, the 84 return value of `tc_gen_reloc' is a pointer to a null terminated 85 array. */ 86 87#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC) 88/* If you define this macro, it should return the offset between the 89 address of a PC relative fixup and the position from which the PC 90 relative adjustment should be made. On many processors, the base 91 of a PC relative instruction is the next instruction, so this 92 macro would return the length of an instruction. */ 93 94extern long md_pcrel_from_section (struct fix *, segT); 95 96#define LISTING_WORD_SIZE 2 97/* The number of bytes to put into a word in a listing. This affects 98 the way the bytes are clumped together in the listing. For 99 example, a value of 2 might print `1234 5678' where a value of 1 100 would print `12 34 56 78'. The default value is 4. */ 101 102/* Support symbols like: C$$IO$$. */ 103#undef LEX_DOLLAR 104#define LEX_DOLLAR 1 105 106#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0 107/* An `.lcomm' directive with no explicit alignment parameter will 108 use this macro to set P2VAR to the alignment that a request for 109 SIZE bytes will have. The alignment is expressed as a power of 110 two. If no alignment should take place, the macro definition 111 should do nothing. Some targets define a `.bss' directive that is 112 also affected by this macro. The default definition will set 113 P2VAR to the truncated power of two of sizes up to eight bytes. */ 114 115#define md_relax_frag(SEG, FRAGP, STRETCH) \ 116 msp430_relax_frag (SEG, FRAGP, STRETCH) 117extern long msp430_relax_frag (segT, fragS *, long); 118 119#define TC_FORCE_RELOCATION_LOCAL(FIX) \ 120 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \ 121 || msp430_force_relocation_local (FIX)) 122extern int msp430_force_relocation_local (struct fix *); 123 124/* We need to add reference symbols for .data/.bss. */ 125#define tc_frob_section(sec) msp430_frob_section (sec) 126extern void msp430_frob_section (asection *); 127 128extern int msp430_enable_relax; 129extern int msp430_enable_polys; 130 131#define tc_fix_adjustable(FIX) msp430_fix_adjustable (FIX) 132extern bfd_boolean msp430_fix_adjustable (struct fix *); 133 134/* Allow hexadecimal numbers with 'h' suffix. Note that if the number 135 starts with a letter it will be interpreted as a symbol name not a 136 constant. Thus "beach" is a symbol not the hex value 0xbeac. So 137 is A5A5h... */ 138#define NUMBERS_WITH_SUFFIX 1 139 140#define md_end msp430_md_end 141extern void msp430_md_end (void); 142 143/* Do not allow call frame debug info optimization as otherwise we could 144 generate the DWARF directives without the relocs necessary to patch 145 them up. */ 146#define md_allow_eh_opt 0 147 148/* The difference between same-section symbols may be affected by linker 149 relaxation, so do not resolve such expressions in the assembler. */ 150#define md_allow_local_subtract(l,r,s) msp430_allow_local_subtract (l, r, s) 151extern bfd_boolean msp430_allow_local_subtract (expressionS *, expressionS *, segT); 152 153#define RELOC_EXPANSION_POSSIBLE 154#define MAX_RELOC_EXPANSION 2 155 156#define DIFF_EXPR_OK 157 158/* Do not adjust relocations involving symbols in code sections, 159 because it breaks linker relaxations. This could be fixed in the 160 linker, but this fix is simpler, and it pretty much only affects 161 object size a little bit. */ 162#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ 163 (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC) \ 164 || ((SEC)->flags & SEC_CODE) != 0 \ 165 || ((SEC)->flags & SEC_DEBUGGING) != 0 \ 166 || TC_FORCE_RELOCATION (FIX)) 167 168/* We validate subtract arguments within tc_gen_reloc(), 169 so don't report errors at this point. */ 170#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 171 172#define DWARF2_USE_FIXED_ADVANCE_PC 1 173 174#define TC_LINKRELAX_FIXUP(seg) ((seg->flags & SEC_CODE) || (seg->flags & SEC_DEBUGGING)) 175 176#define DWARF2_ADDR_SIZE(bfd) 4 177