| 1 | /* GAS cgen support.
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| 2 | Copyright 1998, 1999, 2000 Free Software Foundation, Inc.
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| 3 |
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| 4 | This file is part of GAS, the GNU Assembler.
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| 5 |
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| 6 | GAS is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | GAS is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with GAS; see the file COPYING. If not, write to the Free
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| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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| 19 | 02111-1307, USA. */
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| 20 |
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| 21 | #ifndef GAS_CGEN_H
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| 22 | #define GAS_CGEN_H
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| 23 |
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| 24 | /* Opcode table handle. */
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| 25 | extern CGEN_CPU_DESC gas_cgen_cpu_desc;
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| 26 |
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| 27 | /* Maximum number of fixups in an insn.
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| 28 | If you need to change this, allow target to override and do so there. */
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| 29 | #ifndef GAS_CGEN_MAX_FIXUPS
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| 30 | #define GAS_CGEN_MAX_FIXUPS 3
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| 31 | #endif
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| 32 |
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| 33 | /* Struct defining result of gas_cgen_finish_insn. */
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| 34 | typedef struct {
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| 35 | /* frag containing the insn */
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| 36 | fragS * frag;
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| 37 | /* Address of insn in frag. */
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| 38 | char * addr;
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| 39 | /* Number of fixups this insn has. */
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| 40 | int num_fixups;
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| 41 | /* Array of fixups. */
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| 42 | fixS * fixups[GAS_CGEN_MAX_FIXUPS];
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| 43 | } finished_insnS;
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| 44 |
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| 45 | /* Callback for operand parsing.
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| 46 | The result is an error message or NULL for success.
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| 47 | The parsed value is stored in the bfd_vma *. */
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| 48 | extern const char * gas_cgen_parse_operand
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| 49 | PARAMS ((CGEN_CPU_DESC, enum cgen_parse_operand_type,
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| 50 | const char **, int, int, enum cgen_parse_operand_result *,
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| 51 | bfd_vma *));
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| 52 |
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| 53 | /* Call this from md_assemble to initialize the assembler callback. */
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| 54 | extern void gas_cgen_init_parse PARAMS ((void));
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| 55 |
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| 56 | /* Routines and macros for saving fixup chains. */
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| 57 | extern void gas_cgen_save_fixups PARAMS ((int));
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| 58 | extern void gas_cgen_restore_fixups PARAMS ((int));
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| 59 | extern void gas_cgen_swap_fixups PARAMS ((int));
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| 60 | extern void gas_cgen_initialize_saved_fixups_array PARAMS ((void));
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| 61 | #define MAX_SAVED_FIXUP_CHAINS 50
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| 62 |
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| 63 | /* Add a register to the assembler's hash table.
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| 64 | This makes lets GAS parse registers for us.
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| 65 | ??? This isn't currently used, but it could be in the future. */
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| 66 | extern void cgen_asm_record_register PARAMS ((char *, int));
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| 67 |
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| 68 | /* After CGEN_SYM (assemble_insn) is done, this is called to
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| 69 | output the insn and record any fixups. */
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| 70 | extern void gas_cgen_finish_insn PARAMS ((const CGEN_INSN *,
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| 71 | CGEN_INSN_BYTES_PTR, unsigned int,
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| 72 | int, finished_insnS *));
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| 73 |
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| 74 | /* Record a fixup. */
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| 75 | extern fixS * gas_cgen_record_fixup PARAMS ((fragS *, int, const CGEN_INSN *,
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| 76 | int, const CGEN_OPERAND *, int,
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| 77 | symbolS *, offsetT));
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| 78 | extern fixS * gas_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *,
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| 79 | int, const CGEN_OPERAND *, int,
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| 80 | expressionS *));
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| 81 |
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| 82 | /* md_apply_fix3 handler */
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| 83 | extern void gas_cgen_md_apply_fix3 PARAMS ((fixS *, valueT *, segT));
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| 84 |
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| 85 | /* tc_gen_reloc handler */
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| 86 | extern arelent *gas_cgen_tc_gen_reloc PARAMS ((asection *, fixS *));
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| 87 |
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| 88 | /* Target supplied routine to lookup a reloc. */
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| 89 | extern bfd_reloc_code_real_type
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| 90 | md_cgen_lookup_reloc PARAMS ((const CGEN_INSN *, const CGEN_OPERAND *,
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| 91 | fixS *));
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| 92 |
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| 93 | /* Optional target supplied routine to record a fixup for an expression. */
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| 94 | extern fixS *
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| 95 | md_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *, int,
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| 96 | const CGEN_OPERAND *, int,
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| 97 | expressionS *));
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| 98 |
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| 99 | extern void gas_cgen_md_operand PARAMS ((expressionS *));
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| 100 |
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| 101 | /* Perform any cgen specific initialisation for gas. */
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| 102 | extern void gas_cgen_begin PARAMS ((void));
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| 103 |
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| 104 | #endif /* GAS_CGEN_H */
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