1 /* This file is tc-sh64.h 2 Copyright (C) 2000-2016 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 published by 8 the Free Software Foundation; either version 3, 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, 51 Franklin Street - Fifth Floor, 19 Boston, MA 02110-1301, 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_r_type == BFD_RELOC_32_PLT_PCREL \ 83 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_LOW16 \ 84 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_MEDLOW16 \ 85 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_MEDHI16 \ 86 || (FIX)->fx_r_type == BFD_RELOC_SH_PLT_HI16 \ 87 || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL \ 88 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_LOW16 \ 89 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_MEDLOW16 \ 90 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_MEDHI16 \ 91 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT_HI16 \ 92 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT10BY4 \ 93 || (FIX)->fx_r_type == BFD_RELOC_SH_GOT10BY8 \ 94 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT32 \ 95 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_LOW16 \ 96 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_MEDLOW16 \ 97 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_MEDHI16 \ 98 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT_HI16 \ 99 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT10BY4 \ 100 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPLT10BY8 \ 101 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC \ 102 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_LOW16 \ 103 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_MEDLOW16 \ 104 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_MEDHI16 \ 105 || (FIX)->fx_r_type == BFD_RELOC_SH_GOTPC_HI16 \ 106 || TC_FORCE_RELOCATION (FIX)) 107 108 #undef TC_FORCE_RELOCATION_SUB_SAME 109 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \ 110 (! SEG_NORMAL (SEC) \ 111 || TC_FORCE_RELOCATION (FIX) \ 112 || (sh_relax && SWITCH_TABLE (FIX)) \ 113 || *symbol_get_tc ((FIX)->fx_addsy) != NULL) 114 115 /* Don't complain when we leave fx_subsy around. */ 116 #undef TC_VALIDATE_FIX_SUB 117 #define TC_VALIDATE_FIX_SUB(FIX, SEG) \ 118 ((md_register_arithmetic || (SEG) != reg_section) \ 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, MODE, CP) \ 128 sh64_consume_datalabel (NAME, EXP, MODE, CP, operand) 129 extern int sh64_consume_datalabel (const char *, expressionS *, 130 enum expr_mode, char *, 131 segT (*) (expressionS *, enum expr_mode)); 132 133 /* Saying "$" is the same as saying ".". */ 134 #define DOLLAR_DOT 135 136 #undef MD_PCREL_FROM_SECTION 137 #define MD_PCREL_FROM_SECTION(FIX, SEC) \ 138 shmedia_md_pcrel_from_section (FIX, SEC) 139 140 extern valueT shmedia_md_pcrel_from_section (struct fix *, segT); 141 142 /* We need to mark this symbol as a BranchTarget; setting st_other for it 143 and adding 1 to its value (temporarily). */ 144 extern void sh64_frob_label (symbolS *); 145 146 #undef tc_frob_label 147 #define tc_frob_label(sym) \ 148 do { sh_frob_label (sym); sh64_frob_label (sym); } while (0) 149 150 #define tc_symbol_new_hook(s) sh64_frob_label (s) 151 152 /* We use this to mark our "datalabel" symbol copies. The "mark" is NULL 153 for an ordinary symbol, and the pointer to the "ordinary" symbol for a 154 datalabel symbol. */ 155 #define TC_SYMFIELD_TYPE symbolS * 156 157 #define tc_frob_symbol(symp, punt) \ 158 do \ 159 { \ 160 punt = sh64_exclude_symbol (symp); \ 161 } \ 162 while (0) 163 164 extern int sh64_exclude_symbol (symbolS *); 165 166 extern void sh64_adjust_symtab (void); 167 #define tc_adjust_symtab sh64_adjust_symtab 168 169 #undef md_flush_pending_output 170 #define md_flush_pending_output() sh64_flush_pending_output () 171 extern void sh64_flush_pending_output (void); 172 173 /* Note that tc-sh.c has a sh_frob_section, but it's called from 174 tc_frob_file_before_adjust. */ 175 #define tc_frob_section(sec) shmedia_frob_section_type (sec) 176 extern void shmedia_frob_section_type (asection *); 177 178 /* We need to emit fixups relative to the frag in which the instruction 179 resides. Safest way without calculating max fragment growth or making 180 it a fixed number is to provide a pointer to the opcode frag. 181 182 We also need to emit the right NOP pattern in .align frags. This is 183 done after the text-to-bits assembly pass, so we need to mark it with 184 the ISA setting at the time the .align was assembled. */ 185 #define TC_FRAG_TYPE struct sh64_tc_frag_data 186 187 enum sh64_isa_values 188 { 189 sh64_isa_unspecified, 190 sh64_isa_shcompact, 191 sh64_isa_shmedia, 192 193 /* Special guard value used in contexts when we don't know which ISA it 194 is, just that it's specified (not sh64_isa_unspecified). */ 195 sh64_isa_sh5_guard 196 }; 197 198 struct sh64_tc_frag_data 199 { 200 fragS *opc_frag; 201 enum sh64_isa_values isa; 202 }; 203 204 extern enum sh64_isa_values sh64_isa_mode; 205 206 #define TC_FRAG_INIT(FRAGP) \ 207 do \ 208 { \ 209 (FRAGP)->tc_frag_data.opc_frag = sh64_last_insn_frag; \ 210 (FRAGP)->tc_frag_data.isa = sh64_isa_mode; \ 211 } \ 212 while (0) 213 214 /* This variable is set whenever we generate (or grow) a new opcode frag 215 in shmedia_build_Mytes. */ 216 extern fragS *sh64_last_insn_frag; 217 218 #define md_end() shmedia_md_end () 219 void shmedia_md_end (void); 220 221 /* Because we make .debug_line hold the SHmedia instruction address | 1, 222 we have to say we only have minimum byte-size insns. */ 223 #undef DWARF2_LINE_MIN_INSN_LENGTH 224 #define DWARF2_LINE_MIN_INSN_LENGTH 1 225 226 #define TC_FAKE_LABEL(NAME) sh64_fake_label(NAME) 227 extern int sh64_fake_label (const char *); 228
