/* tc-mn10300.h -- Header file for tc-mn10300.c.
- Copyright 1996, 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1996-2019 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)
+ the Free Software Foundation; either version 3, or (at your option)
any later version.
GAS is distributed in the hope that it will be useful,
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. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#define TC_MN10300
#define TARGET_BYTES_BIG_ENDIAN 0
-#ifndef BFD_ASSEMBLER
- #error MN10300 support requires BFD_ASSEMBLER
-#endif
+#define DIFF_EXPR_OK
+#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
+
+#define TC_FORCE_RELOCATION(FIX) mn10300_force_relocation (FIX)
+extern bfd_boolean mn10300_force_relocation (struct fix *);
+
+/* tc-mn10300.c uses TC_FORCE_RELOCATION_LOCAL, a macro that should
+ only appear in write.c. The use is likely incorrect. Duplicating
+ the definition here rather than expanding it in
+ TC_FORCE_RELOCATION_LOCAL at least ensures write.c changes will be
+ flagged immediately with a compile error. */
+#define GENERIC_FORCE_RELOCATION_LOCAL(FIX) \
+ (!(FIX)->fx_pcrel \
+ || TC_FORCE_RELOCATION (FIX))
+
+#define TC_FORCE_RELOCATION_LOCAL(FIX) \
+ (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
+ || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \
+ || (FIX)->fx_r_type == BFD_RELOC_MN10300_GOT32 \
+ || (FIX)->fx_r_type == BFD_RELOC_32_GOT_PCREL)
+
+#define md_parse_name(NAME, EXPRP, MODE, NEXTCHARP) \
+ mn10300_parse_name ((NAME), (EXPRP), (MODE), (NEXTCHARP))
+int mn10300_parse_name (char const *, expressionS *, enum expr_mode, char *);
+
+#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \
+ mn10300_cons_fix_new ((FRAG), (OFF), (LEN), (EXP), (RELOC))
+void mn10300_cons_fix_new (fragS *, int, int, expressionS *,
+ bfd_reloc_code_real_type);
+
+/* This is used to construct expressions out of @GOTOFF, @PLT and @GOT
+ symbols. The relocation type is stored in X_md. */
+#define O_PIC_reloc O_md1
/* The target BFD architecture. */
#define TARGET_ARCH bfd_arch_mn10300
+#ifdef TE_LINUX
+#define TARGET_FORMAT "elf32-am33lin"
+#else
#define TARGET_FORMAT "elf32-mn10300"
+#endif
-/* No shared lib support, so we don't need to ensure externally
- visible symbols can be overridden. */
-#define EXTERN_FORCE_RELOC 0
-
-/* For fixup and relocation handling. */
-#define TC_FORCE_RELOCATION(fixp) mn10300_force_relocation (fixp)
-extern int mn10300_force_relocation PARAMS ((struct fix *));
/* Do not adjust relocations involving symbols in code sections,
because it breaks linker relaxations. This could be fixed in the
linker, but this fix is simpler, and it pretty much only affects
object size a little bit. */
-#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
- (! SEG_NORMAL (SEG) \
- || ((SEG)->flags & SEC_CODE) != 0)
-
-/* Fixup debug sections since we will never relax them. */
+#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
+ (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC) \
+ || ((SEC)->flags & SEC_CODE) != 0 \
+ || (FIX)->fx_r_type == BFD_RELOC_MN10300_ALIGN \
+ || TC_FORCE_RELOCATION (FIX))
+
+/* We validate subtract arguments within tc_gen_reloc(), so don't
+ report errors at this point. */
+#define TC_VALIDATE_FIX_SUB(FIX, SEG) 1
+
+/* Fixup debug sections since we will never relax them. Ideally, we
+ could do away with this and instead check every single fixup with
+ TC_FORCE_RELOCATION and TC_FORCE_RELOCATION_SUB_NAME, verifying
+ that the sections of the referenced symbols (and not the sections
+ in which the fixup appears) may be subject to relaxation. We'd
+ still have to check the section in which the fixup appears, because
+ we want to do some simplifications in debugging info that might
+ break in real code.
+
+ Using the infrastructure in write.c to simplify subtraction fixups
+ would enable us to remove a lot of code from tc_gen_reloc(), but
+ this is simpler, faster, and produces almost the same effect.
+ Also, in the macros above, we can't check whether the fixup is in a
+ debugging section or not, so we have to use this for now. */
#define TC_LINKRELAX_FIXUP(seg) (seg->flags & SEC_ALLOC)
#define md_operand(x)
#define md_number_to_chars number_to_chars_littleendian
-/* Don't bother to adjust relocs. */
-#define tc_fix_adjustable(FIX) 0
-/* #define tc_fix_adjustable(FIX) mn10300_fix_adjustable (FIX) */
-extern boolean mn10300_fix_adjustable PARAMS ((struct fix *));
+#define tc_fix_adjustable(FIX) mn10300_fix_adjustable (FIX)
+extern bfd_boolean mn10300_fix_adjustable (struct fix *);
/* We do relaxing in the assembler as well as the linker. */
extern const struct relax_type md_relax_table[];
#define TC_GENERIC_RELAX_TABLE md_relax_table
#define DWARF2_LINE_MIN_INSN_LENGTH 1
+
+/* The difference between same-section symbols may be affected by linker
+ relaxation, so do not resolve such expressions in the assembler. */
+#define md_allow_local_subtract(l,r,s) mn10300_allow_local_subtract (l, r, s)
+extern bfd_boolean mn10300_allow_local_subtract (expressionS *, expressionS *, segT);
+
+#define RELOC_EXPANSION_POSSIBLE
+#define MAX_RELOC_EXPANSION 2
+
+#define TC_FRAG_TYPE bfd_boolean
+
+#define HANDLE_ALIGN(frag) mn10300_handle_align (frag)
+extern void mn10300_handle_align (fragS *);
+
+/* Only allow call frame debug info optimization when linker relaxation is
+ not enabled as otherwise we could generate the DWARF directives without
+ the relocs necessary to patch them up. */
+#define md_allow_eh_opt (linkrelax == 0)
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