| 1 | /* tc-s390.h -- Header file for tc-s390.c. |
| 2 | Copyright 2000, 2001 Free Software Foundation, Inc. |
| 3 | Written by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| 4 | |
| 5 | This file is part of GAS, the GNU Assembler. |
| 6 | |
| 7 | GAS is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with GAS; see the file COPYING. If not, write to the Free |
| 19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 20 | 02111-1307, USA. */ |
| 21 | |
| 22 | #define TC_S390 |
| 23 | |
| 24 | #ifdef ANSI_PROTOTYPES |
| 25 | struct fix; |
| 26 | #endif |
| 27 | |
| 28 | #ifndef BFD_ASSEMBLER |
| 29 | #error S390 support requires BFD_ASSEMBLER |
| 30 | #endif |
| 31 | |
| 32 | /* This expression evaluates to false if the relocation is for a local object |
| 33 | for which we still want to do the relocation at runtime. True if we |
| 34 | are willing to perform this relocation while building the .o file. |
| 35 | This is only used for pcrel relocations, so GOTOFF does not need to be |
| 36 | checked here. I am not sure if some of the others are ever used with |
| 37 | pcrel, but it is easier to be safe than sorry. */ |
| 38 | |
| 39 | #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \ |
| 40 | ((FIX)->fx_addsy == NULL \ |
| 41 | || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \ |
| 42 | && ! S_IS_WEAK ((FIX)->fx_addsy) \ |
| 43 | && S_IS_DEFINED ((FIX)->fx_addsy) \ |
| 44 | && ! S_IS_COMMON ((FIX)->fx_addsy))) |
| 45 | |
| 46 | #define tc_fix_adjustable(X) tc_s390_fix_adjustable(X) |
| 47 | extern int tc_s390_fix_adjustable PARAMS ((struct fix *)); |
| 48 | |
| 49 | /* The target BFD architecture. */ |
| 50 | #define TARGET_ARCH bfd_arch_s390 |
| 51 | extern enum bfd_architecture s390_arch PARAMS ((void)); |
| 52 | |
| 53 | /* The target BFD format. */ |
| 54 | #define TARGET_FORMAT s390_target_format() |
| 55 | |
| 56 | /* Set the endianness we are using. */ |
| 57 | #define TARGET_BYTES_BIG_ENDIAN 1 |
| 58 | |
| 59 | /* Whether or not the target is big endian */ |
| 60 | extern int target_big_endian; |
| 61 | |
| 62 | /* Permit temporary numeric labels. */ |
| 63 | #define LOCAL_LABELS_FB 1 |
| 64 | |
| 65 | /* $ is used to refer to the current location. */ |
| 66 | /* #define DOLLAR_DOT */ |
| 67 | |
| 68 | /* We need to be able to make relocations involving the difference of |
| 69 | two symbols. This includes the difference of two symbols when |
| 70 | one of them is undefined (this comes up in PIC code generation). |
| 71 | */ |
| 72 | #define UNDEFINED_DIFFERENCE_OK |
| 73 | |
| 74 | /* foo-. gets turned into PC relative relocs */ |
| 75 | #define DIFF_EXPR_OK |
| 76 | |
| 77 | /* We don't need to handle .word strangely. */ |
| 78 | #define WORKING_DOT_WORD |
| 79 | |
| 80 | /* We set the fx_done field appropriately in md_apply_fix. */ |
| 81 | #define TC_HANDLES_FX_DONE |
| 82 | |
| 83 | #define md_number_to_chars number_to_chars_bigendian |
| 84 | |
| 85 | #define md_do_align(n, fill, len, max, around) \ |
| 86 | if ((n) && !need_pass_2 && (fill == 0) && \ |
| 87 | (bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) { \ |
| 88 | char *p; \ |
| 89 | p = frag_var (rs_align_code, 15, 1, (relax_substateT) max, \ |
| 90 | (symbolS *) 0, (offsetT) (n), (char *) 0); \ |
| 91 | *p = 0x07; \ |
| 92 | goto around; \ |
| 93 | } |
| 94 | |
| 95 | extern void s390_align_code PARAMS ((fragS *, int)); |
| 96 | |
| 97 | #define HANDLE_ALIGN(fragP) \ |
| 98 | if (fragP->fr_type == rs_align_code) \ |
| 99 | s390_align_code (fragP, (fragP->fr_next->fr_address \ |
| 100 | - fragP->fr_address \ |
| 101 | - fragP->fr_fix)); |
| 102 | |
| 103 | /* call md_apply_fix3 with segment instead of md_apply_fix */ |
| 104 | #define MD_APPLY_FIX3 |
| 105 | |
| 106 | /* call md_pcrel_from_section, not md_pcrel_from */ |
| 107 | #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC) |
| 108 | extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); |
| 109 | |
| 110 | #define md_operand(x) |
| 111 | |
| 112 | extern void s390_md_end PARAMS ((void)); |
| 113 | #define md_end() s390_md_end () |