1 /* This file is tc-msp430.h
2 Copyright (C) 2002-2019 Free Software Foundation, Inc.
4 Contributed by Dmitry Diky <diwil@mail.ru>
6 This file is part of GAS, the GNU Assembler.
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)
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.
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
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
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. */
33 #define TARGET_ARCH bfd_arch_msp430
34 /* This macro is the BFD architecture to pass to `bfd_set_arch_mach'. */
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. */
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. */
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. */
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. */
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. */
60 #define WORKING_DOT_WORD
64 `md_create_short_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. */
76 /* Values passed to md_apply_fix don't include symbol values. */
77 #define MD_APPLY_SYM_VALUE(FIX) 0
79 #define TC_HANDLES_FX_DONE
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
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. */
94 extern long md_pcrel_from_section (struct fix
*, segT
);
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. */
102 /* Support symbols like: C$$IO$$. */
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. */
115 #define md_relax_frag(SEG, FRAGP, STRETCH) \
116 msp430_relax_frag (SEG, FRAGP, STRETCH)
117 extern long msp430_relax_frag (segT
, fragS
*, long);
119 #define TC_FORCE_RELOCATION_LOCAL(FIX) \
120 (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
121 || msp430_force_relocation_local (FIX))
122 extern int msp430_force_relocation_local (struct fix
*);
124 /* We need to add reference symbols for .data/.bss. */
125 #define tc_frob_section(sec) msp430_frob_section (sec)
126 extern void msp430_frob_section (asection
*);
128 extern int msp430_enable_relax
;
129 extern int msp430_enable_polys
;
131 #define tc_fix_adjustable(FIX) msp430_fix_adjustable (FIX)
132 extern bfd_boolean
msp430_fix_adjustable (struct fix
*);
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
138 #define NUMBERS_WITH_SUFFIX 1
140 #define md_end msp430_md_end
141 extern void msp430_md_end (void);
143 /* Do not allow call frame debug info optimization as otherwise we could
144 generate the DWARF directives without the relocs necessary to patch
146 #define md_allow_eh_opt 0
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)
151 extern bfd_boolean
msp430_allow_local_subtract (expressionS
*, expressionS
*, segT
);
153 #define RELOC_EXPANSION_POSSIBLE
154 #define MAX_RELOC_EXPANSION 2
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))
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
172 #define DWARF2_USE_FIXED_ADVANCE_PC 1
174 #define TC_LINKRELAX_FIXUP(seg) ((seg->flags & SEC_CODE) || (seg->flags & SEC_DEBUGGING))
176 #define DWARF2_ADDR_SIZE(bfd) 4
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