Home | History | Annotate | Download | only in config
      1 /* tc-sparc.h - Macros and type defines for the sparc.
      2    Copyright (C) 1989-2014 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