/* tc-mn10300.h -- Header file for tc-mn10300.c.
- Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1996-2020 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_"
-/* The target BFD architecture. */
-#define TARGET_ARCH bfd_arch_mn10300
+#define TC_FORCE_RELOCATION(FIX) mn10300_force_relocation (FIX)
+extern bfd_boolean mn10300_force_relocation (struct fix *);
-#define TARGET_FORMAT "elf32-mn10300"
+/* 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))
-/* For fixup and relocation handling. */
-#define TC_FORCE_RELOCATION(fixp) mn10300_force_relocation (fixp)
-extern int mn10300_force_relocation PARAMS ((struct 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 TC_HANDLES_FX_DONE
+#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 obj_fix_adjustable(fixP) mn10300_fix_adjustable (fixP)
-extern boolean mn10300_fix_adjustable PARAMS ((struct fix *));
+#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);
-#define MD_APPLY_FIX3 md_apply_fix3
+/* 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
-/* Fixup debug sections since we will never relax them. */
-#define TC_LINKRELAX_FIXUP(seg) (seg->flags & SEC_ALLOC)
+/* 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, 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 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 md_end() mn10300_finalize ()
-void mn10300_finalize PARAMS ((void));
-
#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)
projects / thirdparty / binutils-gdb.git / blobdiff