19990502 sourceware import

gas/cgen.h

@@ -0,0 +1,94 @@
+/* GAS cgen support.
+   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+
+   This file is part of GAS, the GNU Assembler.
+
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   GAS is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+#ifndef GAS_CGEN_H
+#define GAS_CGEN_H
+
+/* Opcode table handle.  */
+extern CGEN_CPU_DESC gas_cgen_cpu_desc;
+
+/* Maximum number of fixups in an insn.
+   If you need to change this, allow target to override and do so there.  */
+#define GAS_CGEN_MAX_FIXUPS 3
+
+/* Struct defining result of gas_cgen_finish_insn.  */
+typedef struct {
+  /* frag containing the insn */
+  fragS * frag;
+  /* Address of insn in frag.  */
+  char * addr;
+  /* Number of fixups this insn has.  */
+  int num_fixups;
+  /* Array of fixups.  */
+  fixS * fixups[GAS_CGEN_MAX_FIXUPS];
+} finished_insnS;
+
+/* Callback for operand parsing.
+   The result is an error message or NULL for success.
+   The parsed value is stored in the bfd_vma *.  */
+extern const char * gas_cgen_parse_operand
+     PARAMS ((CGEN_CPU_DESC, enum cgen_parse_operand_type,
+	      const char **, int, int, enum cgen_parse_operand_result *,
+	      bfd_vma *));
+
+/* Call this from md_assemble to initialize the assembler callback.  */
+extern void gas_cgen_init_parse PARAMS ((void));
+
+extern void gas_cgen_save_fixups PARAMS ((void));
+extern void gas_cgen_restore_fixups PARAMS ((void));
+extern void gas_cgen_swap_fixups PARAMS ((void));
+     
+/* Add a register to the assembler's hash table.
+   This makes lets GAS parse registers for us.
+   ??? This isn't currently used, but it could be in the future.  */
+extern void cgen_asm_record_register PARAMS ((char *, int));
+
+/* After CGEN_SYM (assemble_insn) is done, this is called to
+   output the insn and record any fixups.  */
+extern void gas_cgen_finish_insn PARAMS ((const CGEN_INSN *,
+					  CGEN_INSN_BYTES_PTR, unsigned int,
+					  int, finished_insnS *));
+
+/* Record a fixup.  */
+extern fixS * gas_cgen_record_fixup PARAMS ((fragS *, int, const CGEN_INSN *,
+					     int, const CGEN_OPERAND *, int,
+					     symbolS *, offsetT));
+extern fixS * gas_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *,
+						 int, const CGEN_OPERAND *, int,
+						 expressionS *));
+
+/* md_apply_fix3 handler */
+extern int gas_cgen_md_apply_fix3 PARAMS ((fixS *, valueT *, segT));
+
+/* tc_gen_reloc handler */
+extern arelent *gas_cgen_tc_gen_reloc PARAMS ((asection *, fixS *));
+
+/* Target supplied routine to lookup a reloc.  */
+extern bfd_reloc_code_real_type
+md_cgen_lookup_reloc PARAMS ((const CGEN_INSN *, const CGEN_OPERAND *,
+			      fixS *));
+
+/* Optional target supplied routine to record a fixup for an expression.  */
+extern fixS *
+md_cgen_record_fixup_exp PARAMS ((fragS *, int, const CGEN_INSN *, int,
+				  const CGEN_OPERAND *, int,
+				  expressionS *));
+
+#endif /* GAS_CGEN_H */