| 1 | /* GAS cgen support. |
| 2 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2007 |
| 3 | Free Software Foundation, Inc. |
| 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 3, or (at your option) |
| 10 | any later version. |
| 11 | |
| 12 | GAS is distributed in the hope that it will be useful, but WITHOUT |
| 13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| 14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| 15 | 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, 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | #ifndef GAS_CGEN_H |
| 23 | #define GAS_CGEN_H |
| 24 | |
| 25 | /* Opcode table handle. */ |
| 26 | extern CGEN_CPU_DESC gas_cgen_cpu_desc; |
| 27 | |
| 28 | /* Maximum number of fixups in an insn. |
| 29 | If you need to change this, allow target to override and do so there. */ |
| 30 | #ifndef GAS_CGEN_MAX_FIXUPS |
| 31 | #define GAS_CGEN_MAX_FIXUPS 3 |
| 32 | #endif |
| 33 | |
| 34 | /* Struct defining result of gas_cgen_finish_insn. */ |
| 35 | typedef struct { |
| 36 | /* frag containing the insn */ |
| 37 | fragS * frag; |
| 38 | /* Address of insn in frag. */ |
| 39 | char * addr; |
| 40 | /* Number of fixups this insn has. */ |
| 41 | int num_fixups; |
| 42 | /* Array of fixups. */ |
| 43 | fixS * fixups[GAS_CGEN_MAX_FIXUPS]; |
| 44 | } finished_insnS; |
| 45 | |
| 46 | /* Callback for operand parsing. |
| 47 | The result is an error message or NULL for success. |
| 48 | The parsed value is stored in the bfd_vma *. */ |
| 49 | extern const char * gas_cgen_parse_operand |
| 50 | (CGEN_CPU_DESC, enum cgen_parse_operand_type, |
| 51 | const char **, int, int, enum cgen_parse_operand_result *, |
| 52 | bfd_vma *); |
| 53 | |
| 54 | /* Call this from md_assemble to initialize the assembler callback. */ |
| 55 | extern void gas_cgen_init_parse (void); |
| 56 | |
| 57 | /* Routines and macros for saving fixup chains. */ |
| 58 | extern void gas_cgen_save_fixups (int); |
| 59 | extern void gas_cgen_restore_fixups (int); |
| 60 | extern void gas_cgen_swap_fixups (int); |
| 61 | extern void gas_cgen_initialize_saved_fixups_array (void); |
| 62 | #define MAX_SAVED_FIXUP_CHAINS 50 |
| 63 | |
| 64 | /* Add a register to the assembler's hash table. |
| 65 | This makes lets GAS parse registers for us. |
| 66 | ??? This isn't currently used, but it could be in the future. */ |
| 67 | extern void cgen_asm_record_register (char *, int); |
| 68 | |
| 69 | /* After CGEN_SYM (assemble_insn) is done, this is called to |
| 70 | output the insn and record any fixups. */ |
| 71 | extern void gas_cgen_finish_insn (const CGEN_INSN *, |
| 72 | CGEN_INSN_BYTES_PTR, unsigned int, |
| 73 | int, finished_insnS *); |
| 74 | |
| 75 | /* Record a fixup. */ |
| 76 | extern fixS * gas_cgen_record_fixup (fragS *, int, const CGEN_INSN *, |
| 77 | int, const CGEN_OPERAND *, int, |
| 78 | symbolS *, offsetT); |
| 79 | extern fixS * gas_cgen_record_fixup_exp (fragS *, int, const CGEN_INSN *, |
| 80 | int, const CGEN_OPERAND *, int, |
| 81 | expressionS *); |
| 82 | |
| 83 | /* md_apply_fix handler */ |
| 84 | extern void gas_cgen_md_apply_fix (fixS *, valueT *, segT); |
| 85 | |
| 86 | /* tc_gen_reloc handler */ |
| 87 | extern arelent *gas_cgen_tc_gen_reloc (asection *, fixS *); |
| 88 | |
| 89 | /* Target supplied routine to lookup a reloc. */ |
| 90 | extern bfd_reloc_code_real_type |
| 91 | md_cgen_lookup_reloc (const CGEN_INSN *, const CGEN_OPERAND *, fixS *); |
| 92 | |
| 93 | /* Optional target supplied routine to record a fixup for an expression. */ |
| 94 | extern fixS * |
| 95 | md_cgen_record_fixup_exp (fragS *, int, const CGEN_INSN *, int, |
| 96 | const CGEN_OPERAND *, int, expressionS *); |
| 97 | |
| 98 | extern void gas_cgen_md_operand (expressionS *); |
| 99 | |
| 100 | /* Perform any cgen specific initialisation for gas. */ |
| 101 | extern void gas_cgen_begin (void); |
| 102 | |
| 103 | #endif /* GAS_CGEN_H */ |