1 /* tc-sparc.h - Macros and type defines for the sparc.
2    Copyright (C) 1989-2016 Free Software Foundation, Inc.
3 
4    This file is part of GAS, the GNU Assembler.
5 
6    GAS is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as
8    published by the Free Software Foundation; either version 3,
9    or (at your option) any later version.
10 
11    GAS is distributed in the hope that it will be useful, but
12    WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
14    the GNU General Public License for more details.
15 
16    You should have received a copy of the GNU General Public
17    License along with GAS; see the file COPYING.  If not, write
18    to the Free Software Foundation, 51 Franklin Street - Fifth Floor,
19    Boston, MA 02110-1301, USA.  */
20 
21 #ifndef TC_SPARC
22 #define TC_SPARC 1
23 
24 struct frag;
25 
26 /* This is used to set the default value for `target_big_endian'.  */
27 #define TARGET_BYTES_BIG_ENDIAN 1
28 
29 #define LOCAL_LABELS_FB 1
30 
31 #define TARGET_ARCH bfd_arch_sparc
32 
33 #ifdef TE_FreeBSD
34 #define ELF_TARGET_FORMAT	"elf32-sparc"
35 #define ELF64_TARGET_FORMAT	"elf64-sparc-freebsd"
36 #endif
37 
38 #ifdef TE_SOLARIS
39 #define ELF_TARGET_FORMAT	"elf32-sparc-sol2"
40 #define ELF64_TARGET_FORMAT	"elf64-sparc-sol2"
41 #endif
42 
43 #ifndef ELF_TARGET_FORMAT
44 #define ELF_TARGET_FORMAT	"elf32-sparc"
45 #endif
46 
47 #ifndef ELF64_TARGET_FORMAT
48 #define ELF64_TARGET_FORMAT	"elf64-sparc"
49 #endif
50 
51 extern const char *sparc_target_format (void);
52 #define TARGET_FORMAT sparc_target_format ()
53 
54 #define RELOC_EXPANSION_POSSIBLE
55 #define MAX_RELOC_EXPANSION 2
56 
57 /* Make it unconditional and check if -EL is valid after option parsing */
58 #define SPARC_BIENDIAN
59 
60 #define WORKING_DOT_WORD
61 
62 #define md_convert_frag(b,s,f) \
63   as_fatal (_("sparc convert_frag\n"))
64 #define md_estimate_size_before_relax(f,s) \
65   (as_fatal (_("estimate_size_before_relax called")), 1)
66 
67 #define LISTING_HEADER "SPARC GAS "
68 
69 extern int sparc_pic_code;
70 
71 /* We require .word, et. al., to be aligned correctly.  */
72 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
73 extern void sparc_cons_align (int);
74 
75 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
76 extern void sparc_handle_align (struct frag *);
77 
78 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
79 
80 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
81    don't know about other relocation types, or other formats, yet.  */
82 #ifdef OBJ_COFF
83 #define TC_FORCE_RELOCATION_ABS(FIX)		\
84   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2	\
85    || TC_FORCE_RELOCATION (FIX))
86 
87 #define RELOC_REQUIRES_SYMBOL
88 #endif
89 
90 #ifdef OBJ_AOUT
91 /* This expression evaluates to true if the relocation is for a local
92    object for which we still want to do the relocation at runtime.
93    False if we are willing to perform this relocation while building
94    the .o file.  */
95 
96 #define TC_FORCE_RELOCATION_LOCAL(FIX)		\
97   (!(FIX)->fx_pcrel				\
98    || (sparc_pic_code				\
99        && S_IS_EXTERNAL ((FIX)->fx_addsy))	\
100    || TC_FORCE_RELOCATION (FIX))
101 #endif
102 
103 #ifdef OBJ_ELF
104 /* Don't turn certain relocs into relocations against sections.  This
105    is required for the dynamic linker to operate properly.  When
106    generating PIC, we need to keep any non PC relative reloc.  The PIC
107    part of this test must be parallel to the code in tc_gen_reloc which
108    converts relocations to GOT relocations.  */
109 #define tc_fix_adjustable(FIX)						\
110   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT				\
111    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY			\
112    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22			\
113        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)		\
114    && (! sparc_pic_code							\
115        || ((FIX)->fx_r_type != BFD_RELOC_HI22				\
116 	   && (FIX)->fx_r_type != BFD_RELOC_LO10			\
117 	   && (FIX)->fx_r_type != BFD_RELOC_SPARC13			\
118 	   && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2		\
119 	       || !generic_force_reloc (FIX))				\
120 	   && ((FIX)->fx_pcrel						\
121 	       || ((FIX)->fx_subsy != NULL				\
122 		   && (S_GET_SEGMENT ((FIX)->fx_subsy)			\
123 		       == S_GET_SEGMENT ((FIX)->fx_addsy)))		\
124 	       || S_IS_LOCAL ((FIX)->fx_addsy)))))
125 
126 /* Values passed to md_apply_fix don't include the symbol value.  */
127 #define MD_APPLY_SYM_VALUE(FIX) 0
128 
129 /* Finish up the entire symtab.  */
130 #define tc_adjust_symtab() sparc_adjust_symtab ()
131 extern void sparc_adjust_symtab (void);
132 #endif
133 
134 #ifdef OBJ_AOUT
135 /* When generating PIC code, we must not adjust any reloc which will
136    turn into a reloc against the global offset table, nor any reloc
137    which we will need if a symbol is overridden.  */
138 #define tc_fix_adjustable(FIX)						\
139   (! sparc_pic_code							\
140    || ((FIX)->fx_pcrel							\
141        && ((FIX)->fx_addsy == NULL					\
142 	   || (! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
143 	       && ! S_IS_WEAK ((FIX)->fx_addsy))))			\
144    || (FIX)->fx_r_type == BFD_RELOC_16					\
145    || (FIX)->fx_r_type == BFD_RELOC_32)
146 #endif
147 
148 #define elf_tc_final_processing sparc_elf_final_processing
149 extern void sparc_elf_final_processing (void);
150 
151 #define md_operand(x)
152 
153 extern void sparc_md_end (void);
154 #define md_end() sparc_md_end ()
155 
156 #endif
157 
158 #define TC_PARSE_CONS_RETURN_TYPE const char *
159 #define TC_PARSE_CONS_RETURN_NONE NULL
160 
161 #ifdef OBJ_ELF
162 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
163 extern const char *sparc_cons (expressionS *, int);
164 #endif
165 
166 #define TC_CONS_FIX_NEW cons_fix_new_sparc
167 extern void cons_fix_new_sparc
168 (struct frag *, int, unsigned int, struct expressionS *, const char *);
169 
170 #define TC_FIX_TYPE	valueT
171 
172 #define TC_INIT_FIX_DATA(X)			\
173   do						\
174      {						\
175        (X)->tc_fix_data = 0;			\
176      }						\
177   while (0)
178 
179 #define TC_FIX_DATA_PRINT(FILE, FIX)					\
180   do									\
181     {									\
182       fprintf ((FILE), "addend2=%ld\n",   				\
183 	      (unsigned long) (FIX)->tc_fix_data);			\
184     }									\
185   while (0)
186 
187 #define TARGET_USE_CFIPOP 1
188 
189 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
190 extern void sparc_cfi_frame_initial_instructions (void);
191 
192 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
193 extern int sparc_regname_to_dw2regnum (char *regname);
194 
195 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
196 extern void sparc_cfi_emit_pcrel_expr (expressionS *, unsigned int);
197 
198 extern int sparc_cie_data_alignment;
199 
200 #define DWARF2_LINE_MIN_INSN_LENGTH     4
201 #define DWARF2_DEFAULT_RETURN_COLUMN    15
202 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
203 
204 /* end of tc-sparc.h */
205