cgen.h revision 85815
1/* GAS cgen support. 2 Copyright 1998, 1999, 2000 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 the Free 18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 19 02111-1307, USA. */ 20 21#ifndef GAS_CGEN_H 22#define GAS_CGEN_H 23 24/* Opcode table handle. */ 25extern CGEN_CPU_DESC gas_cgen_cpu_desc; 26 27/* Maximum number of fixups in an insn. 28 If you need to change this, allow target to override and do so there. */ 29#ifndef GAS_CGEN_MAX_FIXUPS 30#define GAS_CGEN_MAX_FIXUPS 3 31#endif 32 33/* Struct defining result of gas_cgen_finish_insn. */ 34typedef struct { 35 /* frag containing the insn */ 36 fragS * frag; 37 /* Address of insn in frag. */ 38 char * addr; 39 /* Number of fixups this insn has. */ 40 int num_fixups; 41 /* Array of fixups. */ 42 fixS * fixups[GAS_CGEN_MAX_FIXUPS]; 43} finished_insnS; 44 45/* Callback for operand parsing. 46 The result is an error message or NULL for success. 47 The parsed value is stored in the bfd_vma *. */ 48extern const char * gas_cgen_parse_operand 49 PARAMS ((CGEN_CPU_DESC, enum cgen_parse_operand_type, 50 const char **, int, int, enum cgen_parse_operand_result *, 51 bfd_vma *)); 52 53/* Call this from md_assemble to initialize the assembler callback. */ 54extern void gas_cgen_init_parse PARAMS ((void)); 55 56extern void gas_cgen_save_fixups PARAMS ((void)); 57extern void gas_cgen_restore_fixups PARAMS ((void)); 58extern void gas_cgen_swap_fixups PARAMS ((void)); 59 60/* Add a register to the assembler's hash table. 61 This makes lets GAS parse registers for us. 62 ??? This isn't currently used, but it could be in the future. */ 63extern void cgen_asm_record_register PARAMS ((char *, int)); 64 65/* After CGEN_SYM (assemble_insn) is done, this is called to 66 output the insn and record any fixups. */ 67extern void gas_cgen_finish_insn PARAMS ((const CGEN_INSN *, 68 CGEN_INSN_BYTES_PTR, unsigned int, 69 int, finished_insnS *)); 70 71/* Record a fixup. */ 72extern fixS * gas_cgen_record_fixup PARAMS ((fragS *, int, const CGEN_INSN *, 73 int, const CGEN_OPERAND *, int, 74 symbolS *, offsetT)); 75extern fixS * gas_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *, 76 int, const CGEN_OPERAND *, int, 77 expressionS *)); 78 79/* md_apply_fix3 handler */ 80extern int gas_cgen_md_apply_fix3 PARAMS ((fixS *, valueT *, segT)); 81 82/* tc_gen_reloc handler */ 83extern arelent *gas_cgen_tc_gen_reloc PARAMS ((asection *, fixS *)); 84 85/* Target supplied routine to lookup a reloc. */ 86extern bfd_reloc_code_real_type 87md_cgen_lookup_reloc PARAMS ((const CGEN_INSN *, const CGEN_OPERAND *, 88 fixS *)); 89 90/* Optional target supplied routine to record a fixup for an expression. */ 91extern fixS * 92md_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *, int, 93 const CGEN_OPERAND *, int, 94 expressionS *)); 95 96#endif /* GAS_CGEN_H */ 97