Add s390 support

1 files changed, 113 insertions, 0 deletions

diff --git a/gas/config/tc-s390.h b/gas/config/tc-s390.h
new file mode 100644
index 00000000000..954fa18bc1a
--- /dev/null
+++ b/gas/config/tc-s390.h
@@ -0,0 +1,113 @@
+/* tc-s390.h -- Header file for tc-s390.c.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+   Written by Martin Schwidefsky (schwidefsky@de.ibm.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, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA. */
+
+#define TC_S390
+
+#ifdef ANSI_PROTOTYPES
+struct fix;
+#endif
+
+#ifndef BFD_ASSEMBLER
+ #error S390 support requires BFD_ASSEMBLER
+#endif
+
+/* This expression evaluates to false if the relocation is for a local object
+   for which we still want to do the relocation at runtime.  True if we
+   are willing to perform this relocation while building the .o file.
+   This is only used for pcrel relocations, so GOTOFF does not need to be
+   checked here.  I am not sure if some of the others are ever used with
+   pcrel, but it is easier to be safe than sorry. */
+
+#define TC_RELOC_RTSYM_LOC_FIXUP(FIX)  \
+  ((FIX)->fx_addsy == NULL \
+   || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
+       && ! S_IS_WEAK ((FIX)->fx_addsy) \
+       && S_IS_DEFINED ((FIX)->fx_addsy) \
+       && ! S_IS_COMMON ((FIX)->fx_addsy)))
+
+#define tc_fix_adjustable(X)  tc_s390_fix_adjustable(X)
+extern int tc_s390_fix_adjustable PARAMS ((struct fix *));
+
+/* The target BFD architecture.  */
+#define TARGET_ARCH bfd_arch_s390
+extern enum bfd_architecture s390_arch PARAMS ((void));
+
+/* The target BFD format.  */
+#define TARGET_FORMAT s390_target_format()
+
+/* Set the endianness we are using. */
+#define TARGET_BYTES_BIG_ENDIAN 1
+
+/* Whether or not the target is big endian */
+extern int target_big_endian;
+
+/* Permit temporary numeric labels.  */
+#define LOCAL_LABELS_FB 1
+
+/* $ is used to refer to the current location.  */
+/* #define DOLLAR_DOT */
+
+/* We need to be able to make relocations involving the difference of
+   two symbols.  This includes the difference of two symbols when
+   one of them is undefined (this comes up in PIC code generation). 
+ */
+#define UNDEFINED_DIFFERENCE_OK
+
+/* foo-. gets turned into PC relative relocs */
+#define DIFF_EXPR_OK
+
+/* We don't need to handle .word strangely.  */
+#define WORKING_DOT_WORD
+
+/* We set the fx_done field appropriately in md_apply_fix.  */
+#define TC_HANDLES_FX_DONE
+
+#define md_number_to_chars           number_to_chars_bigendian
+
+#define md_do_align(n, fill, len, max, around)                          \
+if ((n) && !need_pass_2 && (fill == 0) &&                               \
+    (bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) {     \
+  char *p;                                                              \
+  p = frag_var (rs_align_code, 15, 1, (relax_substateT) max,            \
+                (symbolS *) 0, (offsetT) (n), (char *) 0);              \
+  *p = 0x07;                                                            \
+  goto around;                                                          \
+}
+
+extern void s390_align_code PARAMS ((fragS *, int));
+
+#define HANDLE_ALIGN(fragP)						\
+if (fragP->fr_type == rs_align_code) 					\
+  s390_align_code (fragP, (fragP->fr_next->fr_address			\
+			   - fragP->fr_address				\
+			   - fragP->fr_fix));
+
+/* call md_apply_fix3 with segment instead of md_apply_fix */
+#define MD_APPLY_FIX3
+
+/* call md_pcrel_from_section, not md_pcrel_from */
+#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
+extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
+
+#define md_operand(x)
+
+extern void s390_md_end PARAMS ((void));
+#define md_end() s390_md_end ()