1 /* This file is tc-sh64.h 2 Copyright 2000, 2001, 2002, 2003 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 published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GAS is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GAS; see the file COPYING. If not, write to 18 the Free Software Foundation, 59 Temple Place - Suite 330, 19 Boston, MA 02111-1307, USA. */ 20 21 #define TC_SH64 22 #include "config/tc-sh.h" 23 #include "elf/sh.h" 24 #include "elf32-sh64.h" 25 26 /* We need to override the tc-sh.h settings of HANDLE_ALIGN and 27 MAX_MEM_FOR_RS_ALIGN_CODE; we might need to put in SHmedia NOP:s, not 28 SHcompact NOP:s. */ 29 #undef HANDLE_ALIGN 30 #define HANDLE_ALIGN(frag) sh64_handle_align (frag) 31 extern void sh64_handle_align (fragS *); 32 33 #undef MAX_MEM_FOR_RS_ALIGN_CODE 34 #define MAX_MEM_FOR_RS_ALIGN_CODE sh64_max_mem_for_rs_align_code () 35 extern int sh64_max_mem_for_rs_align_code (void); 36 37 #undef LISTING_HEADER 38 #define LISTING_HEADER \ 39 (target_big_endian ? \ 40 "SuperH SHcompact/SHmedia Big Endian GAS" \ 41 : "SuperH SHcompact/SHmedia Little Endian GAS") 42 43 /* We need to record the new frag position after an .align. */ 44 extern void sh64_do_align (int, const char *, int, int); 45 #define md_do_align(n, fill, len, max, l) \ 46 do { sh64_do_align (n, fill, len, max); goto l; } while (0) 47 48 struct sh64_segment_info_type 49 { 50 /* The type of the section is initialized when the range_start_symbol 51 member is non-NULL. */ 52 symbolS *mode_start_symbol; 53 subsegT mode_start_subseg; 54 55 /* A stored symbol indicating location of last call of 56 "md_flush_pending_output". It is NULLed when we actually use it; 57 otherwise the contents is just filled in with segment, frag and 58 offset within frag. */ 59 symbolS *last_contents_mark; 60 61 unsigned int emitted_ranges; 62 enum sh64_elf_cr_type contents_type; 63 64 /* This is used by the SH1-4 parts; we set it to 0 for SHmedia code and 65 data. */ 66 unsigned int in_code : 1; 67 }; 68 69 #undef TC_SEGMENT_INFO_TYPE 70 #define TC_SEGMENT_INFO_TYPE struct sh64_segment_info_type 71 72 #undef TARGET_FORMAT 73 #define TARGET_FORMAT sh64_target_format () 74 extern const char *sh64_target_format (void); 75 76 #define TARGET_MACH sh64_target_mach () 77 extern int sh64_target_mach (void); 78 79 #undef TC_FORCE_RELOCATION_LOCAL 80 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 81 (!(FIX)->fx_pcrel \ 82 || (FIX)->fx_plt \ 83 || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ 84 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_LOW16 \ 85 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_MEDLOW16 \ 86 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_MEDHI16 \ 87 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_HI16 \ 88 || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ 89 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_LOW16 \ 90 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_MEDLOW16 \ 91 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_MEDHI16 \ 92 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_HI16 \ 93 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT10BY4 \ 94 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT10BY8 \ 95 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT32 \ 96 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_LOW16 \ 97 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_MEDLOW16 \ 98 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_MEDHI16 \ 99 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_HI16 \ 100 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT10BY4 \ 101 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT10BY8 \ 102 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ 103 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_LOW16 \ 104 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_MEDLOW16 \ 105 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_MEDHI16 \ 106 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_HI16 \ 107 || TC_FORCE_RELOCATION (FIX)) 108 109 #undef TC_FORCE_RELOCATION_SUB_SAME 110 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ 111 (! SEG_NORMAL (SEC) \ 112 || TC_FORCE_RELOCATION (FIX) \ 113 || (sh_relax && SWITCH_TABLE (FIX)) \ 114 || *symbol_get_tc ((FIX)->fx_addsy) != NULL) 115 116 /* Don't complain when we leave fx_subsy around. */ 117 #undef TC_VALIDATE_FIX_SUB 118 #define TC_VALIDATE_FIX_SUB(FIX) \ 119 ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ 120 || (sh_relax && SWITCH_TABLE (FIX)) \ 121 || *symbol_get_tc ((FIX)->fx_addsy) != NULL) 122 123 /* Note the kludge: we want to put back C, and we also want to consume the 124 expression, since we have handled it ourselves. FIXME: What we really 125 need is a new GAS infrastructure feature: md_qualifier. */ 126 #undef md_parse_name 127 #define md_parse_name(NAME, EXP, CP) \ 128 sh64_consume_datalabel (NAME, EXP, CP, operand) 129 extern int sh64_consume_datalabel (const char *, expressionS *, char *, 130 segT (*) (expressionS *)); 131 132 /* Saying "$" is the same as saying ".". */ 133 #define DOLLAR_DOT 134 135 #undef MD_PCREL_FROM_SECTION 136 #define MD_PCREL_FROM_SECTION(FIX, SEC) \ 137 shmedia_md_pcrel_from_section (FIX, SEC) 138 139 extern valueT shmedia_md_pcrel_from_section (struct fix *, segT); 140 141 /* We need to mark this symbol as a BranchTarget; setting st_other for it 142 and adding 1 to its value (temporarily). */ 143 extern void sh64_frob_label (symbolS *); 144 145 #undef tc_frob_label 146 #define tc_frob_label(sym) \ 147 do { sh_frob_label (); sh64_frob_label (sym); } while (0) 148 149 #define tc_symbol_new_hook(s) sh64_frob_label (s) 150 151 /* We use this to mark our "datalabel" symbol copies. The "mark" is NULL 152 for an ordinary symbol, and the pointer to the "ordinary" symbol for a 153 datalabel symbol. */ 154 #define TC_SYMFIELD_TYPE symbolS * 155 156 #define tc_frob_symbol(symp, punt) \ 157 do \ 158 { \ 159 punt = sh64_exclude_symbol (symp); \ 160 } \ 161 while (0) 162 163 extern int sh64_exclude_symbol (symbolS *); 164 165 extern void sh64_adjust_symtab (void); 166 #define tc_adjust_symtab sh64_adjust_symtab 167 168 #undef md_flush_pending_output 169 #define md_flush_pending_output() sh64_flush_pending_output () 170 extern void sh64_flush_pending_output (void); 171 172 /* Note that tc-sh.c has a sh_frob_section, but it's called from 173 tc_frob_file_before_adjust. */ 174 #define tc_frob_section(sec) shmedia_frob_section_type (sec) 175 extern void shmedia_frob_section_type (asection *); 176 177 /* We need to emit fixups relative to the frag in which the instruction 178 resides. Safest way without calculating max fragment growth or making 179 it a fixed number is to provide a pointer to the opcode frag. 180 181 We also need to emit the right NOP pattern in .align frags. This is 182 done after the text-to-bits assembly pass, so we need to mark it with 183 the ISA setting at the time the .align was assembled. */ 184 #define TC_FRAG_TYPE struct sh64_tc_frag_data 185 186 enum sh64_isa_values 187 { 188 sh64_isa_unspecified, 189 sh64_isa_shcompact, 190 sh64_isa_shmedia, 191 192 /* Special guard value used in contexts when we don't know which ISA it 193 is, just that it's specified (not sh64_isa_unspecified). */ 194 sh64_isa_sh5_guard 195 }; 196 197 struct sh64_tc_frag_data 198 { 199 fragS *opc_frag; 200 enum sh64_isa_values isa; 201 }; 202 203 extern enum sh64_isa_values sh64_isa_mode; 204 205 #define TC_FRAG_INIT(FRAGP) \ 206 do \ 207 { \ 208 (FRAGP)->tc_frag_data.opc_frag = sh64_last_insn_frag; \ 209 (FRAGP)->tc_frag_data.isa = sh64_isa_mode; \ 210 } \ 211 while (0) 212 213 /* This variable is set whenever we generate (or grow) a new opcode frag 214 in shmedia_build_Mytes. */ 215 extern fragS *sh64_last_insn_frag; 216 217 #define md_end() shmedia_md_end () 218 void shmedia_md_end (void); 219 220 /* Because we make .debug_line hold the SHmedia instruction address | 1, 221 we have to say we only have minimum byte-size insns. */ 222 #undef DWARF2_LINE_MIN_INSN_LENGTH 223 #define DWARF2_LINE_MIN_INSN_LENGTH 1 224