Add support for the Z80 processor family

1 files changed, 103 insertions, 0 deletions

diff --git a/gas/config/tc-z80.h b/gas/config/tc-z80.h
new file mode 100644
index 0000000..90073ab
--- /dev/null
+++ b/gas/config/tc-z80.h
@@ -0,0 +1,103 @@
+/* this is tc-z80.h
+   Copyright 2005 Free Software Foundation, Inc.
+
+   Contributed by Arnold Metselaar <arnold_m@operamail.com>
+
+   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, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */
+
+#ifndef TC_Z80
+#define TC_Z80
+
+#define TARGET_ARCH   bfd_arch_z80
+#define BFD_ARCH      TARGET_ARCH
+#define COFF_MAGIC    0x5A80
+#define TARGET_MACH   0
+#define TARGET_BYTES_BIG_ENDIAN  0
+
+/* If you define this macro, GAS will warn about the
+   use of nonstandard escape sequences in a string.  */
+#define ONLY_STANDARD_ESCAPES
+
+/* GAS will call this function for any expression that can not be
+   recognized.  When the function is called, `input_line_pointer'
+   will point to the start of the expression.  */
+#define md_operand(x)
+
+/* This should just call either `number_to_chars_bigendian' or
+   `number_to_chars_littleendian', whichever is appropriate.  On
+   targets like the MIPS which support options to change the
+   endianness, which function to call is a runtime decision.  On
+   other targets, `md_number_to_chars' can be a simple macro.  */
+#define md_number_to_chars number_to_chars_littleendian
+
+#define TC_COUNT_RELOC(x) 1
+
+#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
+#define md_convert_frag(b,s,f)   as_fatal ("convert_frag called\n")
+#define md_estimate_size_before_relax(f,s) \
+  (as_fatal (_("estimate_size_before_relax called")), 1)
+
+/* Define some functions to be called by generic code.  */
+#define md_end               z80_md_end
+#define md_start_line_hook() { if (z80_start_line_hook ()) continue; }
+#define md_optimize_expr     z80_optimize_expr
+
+extern void z80_md_end (void);
+extern int z80_start_line_hook (void);
+extern int z80_optimize_expr (expressionS *, operatorT, expressionS *);
+
+#define WORKING_DOT_WORD
+
+/* If you define this macro, it means that `tc_gen_reloc' may return
+   multiple relocation entries for a single fixup.  In this case, the
+   return value of `tc_gen_reloc' is a pointer to a null terminated
+   array.  */
+#undef RELOC_EXPANSION_POSSIBLE
+
+/* No shared lib support, so we don't need to ensure
+   externally visible symbols can be overridden.  */
+#define EXTERN_FORCE_RELOC 0
+
+/* Values passed to md_apply_fix3 don't include the symbol value.  */
+#define MD_APPLY_SYM_VALUE(FIX) 0
+
+#define LISTING_WORD_SIZE 2
+
+/* A '$' is used to refer to the current location or as a hex. prefix.  */
+#define DOLLAR_DOT
+#define DOLLAR_AMBIGU                1
+#define SINGLE_EQ_COMPARES
+#define LOCAL_LABELS_FB              1
+#define LITERAL_PREFIXPERCENT_BIN
+#define NUMBERS_WITH_SUFFIX          1
+#define NO_PSEUDO_DOT                1
+/* We allow single quotes to delimit character constants as
+   well, but it is cleaner to handle that in tc-z80.c.  */
+#define SINGLE_QUOTE_STRINGS
+#define NO_STRING_ESCAPES
+
+/* An `.lcomm' directive with no explicit alignment parameter will
+   use this macro to set P2VAR to the alignment that a request for
+   SIZE bytes will have.  The alignment is expressed as a power of
+   two.  If no alignment should take place, the macro definition
+   should do nothing.  Some targets define a `.bss' directive that is
+   also affected by this macro.  The default definition will set
+   P2VAR to the truncated power of two of sizes up to eight bytes.  */
+#define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
+
+#endif