/* This file is tc-m68k.h
- Copyright (C) 1987, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
- Free Software Foundation, Inc.
+ Copyright (C) 1987-2020 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_M68K 1
-#ifdef ANSI_PROTOTYPES
struct fix;
-#endif
#define TARGET_BYTES_BIG_ENDIAN 1
-#ifdef OBJ_AOUT
-#ifdef TE_SUN3
-#define TARGET_FORMAT "a.out-sunos-big"
-#endif
-#ifdef TE_NetBSD
-#define TARGET_FORMAT "a.out-m68k-netbsd"
-#endif
-#ifdef TE_LINUX
-#define TARGET_FORMAT "a.out-m68k-linux"
-#endif
-#ifndef TARGET_FORMAT
-#define TARGET_FORMAT "a.out-zero-big"
-#endif
-#endif
-
-#ifdef OBJ_ELF
#define TARGET_FORMAT "elf32-m68k"
-#endif
-
-#ifdef TE_APOLLO
-#define COFF_MAGIC APOLLOM68KMAGIC
-#define COFF_AOUTHDR_MAGIC APOLLO_COFF_VERSION_NUMBER
-#undef OBJ_COFF_OMIT_OPTIONAL_HEADER
-#endif
-
-#ifdef TE_LYNX
-#define TARGET_FORMAT "coff-m68k-lynx"
-#endif
-#ifdef TE_AUX
-#define TARGET_FORMAT "coff-m68k-aux"
-#endif
-#ifdef TE_DELTA
-#define TARGET_FORMAT "coff-m68k-sysv"
-#endif
-
-#ifndef COFF_MAGIC
-#define COFF_MAGIC MC68MAGIC
-#endif
-#define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */
-#define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */
-#define COFF_FLAGS F_AR32W
-#define TC_COUNT_RELOC(x) ((x)->fx_addsy||(x)->fx_subsy)
-
-#define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP)
-#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
-extern int tc_coff_sizemachdep PARAMS ((struct frag *));
-#ifdef TE_SUN3
-/* This variable contains the value to write out at the beginning of
- the a.out file. The 2<<16 means that this is a 68020 file instead
- of an old-style 68000 file */
-
-#define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16|OMAGIC); /* Magic byte for file header */
-#endif /* TE_SUN3 */
-
-#ifndef AOUT_MACHTYPE
-#define AOUT_MACHTYPE m68k_aout_machtype
-extern int m68k_aout_machtype;
-#endif
+#define TARGET_ARCH bfd_arch_m68k
#define tc_comment_chars m68k_comment_chars
extern const char *m68k_comment_chars;
-#define tc_crawl_symbol_chain(a) {;} /* not used */
-#define tc_headers_hook(a) {;} /* not used */
-#define tc_aout_pre_write_hook(x) {;} /* not used */
-
#define LISTING_WORD_SIZE 2 /* A word is 2 bytes */
#define LISTING_LHS_WIDTH 2 /* One word on the first line */
#define LISTING_LHS_WIDTH_SECOND 2 /* One word on the second line */
#define REGISTER_PREFIX '%'
#endif
-#if !defined (REGISTER_PREFIX_OPTIONAL)
-#if defined (M68KCOFF) || defined (OBJ_ELF)
-#ifndef BFD_ASSEMBLER
-#define LOCAL_LABEL(name) (name[0] == '.' \
- && (name[1] == 'L' || name[1] == '.'))
-#endif /* ! BFD_ASSEMBLER */
+#ifndef REGISTER_PREFIX_OPTIONAL
#define REGISTER_PREFIX_OPTIONAL 0
-#else /* ! (COFF || ELF) */
-#define REGISTER_PREFIX_OPTIONAL 1
-#endif /* ! (COFF || ELF) */
-#endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */
-
-#ifdef TE_DELTA
-/* On the Delta, `%' can occur within a label name, but not as the
- initial character. */
-#define LEX_PCT LEX_NAME
-/* On the Delta, `~' can start a label name, but is converted to '.'. */
-#define LEX_TILDE LEX_BEGIN_NAME
-#define tc_canonicalize_symbol_name(s) ((*(s) == '~' ? *(s) = '.' : '.'), s)
-/* On the Delta, dots are not required before pseudo-ops. */
-#define NO_PSEUDO_DOT
-#ifndef BFD_ASSEMBLER
-#undef LOCAL_LABEL
-#define LOCAL_LABEL(name) \
- (name[0] == '.' || (name[0] == 'L' && name[1] == '%'))
-#endif
#endif
-extern void m68k_mri_mode_change PARAMS ((int));
+extern void m68k_mri_mode_change (int);
#define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i)
-extern int m68k_conditional_pseudoop PARAMS ((pseudo_typeS *));
+extern int m68k_conditional_pseudoop (pseudo_typeS *);
#define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop)
-extern void m68k_frob_label PARAMS ((symbolS *));
+extern void m68k_frob_label (symbolS *);
#define tc_frob_label(sym) m68k_frob_label (sym)
-extern void m68k_flush_pending_output PARAMS ((void));
+extern void m68k_flush_pending_output (void);
#define md_flush_pending_output() m68k_flush_pending_output ()
-extern void m68k_frob_symbol PARAMS ((symbolS *));
-
-#ifdef BFD_ASSEMBLER
+extern void m68k_frob_symbol (symbolS *);
#define tc_frob_symbol(sym,punt) \
do \
while (0)
#define NO_RELOC BFD_RELOC_NONE
+#define RELAX_RELOC_ABS8 BFD_RELOC_8
+#define RELAX_RELOC_ABS16 BFD_RELOC_16
+#define RELAX_RELOC_ABS32 BFD_RELOC_32
+#define RELAX_RELOC_PC8 BFD_RELOC_8_PCREL
+#define RELAX_RELOC_PC16 BFD_RELOC_16_PCREL
+#define RELAX_RELOC_PC32 BFD_RELOC_32_PCREL
-#ifdef OBJ_ELF
+#define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
+extern int tc_m68k_fix_adjustable (struct fix *);
-/* 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. If
- the reloc is against an externally visible symbol, then the assembler
- should never do the relocation. */
+/* Target *-*-elf implies an embedded target. No shared libs.
+ *-*-uclinux also requires special casing to prevent GAS from
+ generating unsupported R_68K_PC16 relocs. */
+#define EXTERN_FORCE_RELOC \
+ ((strcmp (TARGET_OS, "elf") != 0) && (strcmp (TARGET_OS, "uclinux") != 0))
-#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)))
+/* Values passed to md_apply_fix don't include symbol values. */
+#define MD_APPLY_SYM_VALUE(FIX) 0
-#define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
-extern int tc_m68k_fix_adjustable PARAMS ((struct fix *));
#define elf_tc_final_processing m68k_elf_final_processing
-extern void m68k_elf_final_processing PARAMS ((void));
-#endif
+extern void m68k_elf_final_processing (void);
-#define TC_FORCE_RELOCATION(FIX) \
- ((FIX)->fx_r_type == BFD_RELOC_VTABLE_INHERIT \
- || (FIX)->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
+#define DIFF_EXPR_OK
-#else /* ! BFD_ASSEMBLER */
+extern int m68k_parse_long_option (char *);
+#define md_parse_long_option m68k_parse_long_option
-#define tc_frob_coff_symbol(sym) m68k_frob_symbol (sym)
+#define md_operand(x)
-#define NO_RELOC 0
+extern struct relax_type md_relax_table[];
+#define TC_GENERIC_RELAX_TABLE md_relax_table
-#endif /* ! BFD_ASSEMBLER */
+/* We can't do a byte jump to the next instruction, so in that case
+ force word mode by faking AIM. */
+#define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
+ do \
+ { \
+ if (aim == 0 && this_type->rlx_forward == 127) \
+ aim = 128; \
+ } \
+ while (0)
-#define DIFF_EXPR_OK
+#define DWARF2_LINE_MIN_INSN_LENGTH 2
-extern void m68k_init_after_args PARAMS ((void));
-#define tc_init_after_args m68k_init_after_args
+/* We want .cfi_* pseudo-ops for generating unwind info. */
+#define TARGET_USE_CFIPOP 1
-extern int m68k_parse_long_option PARAMS ((char *));
-#define md_parse_long_option m68k_parse_long_option
+#define DWARF2_DEFAULT_RETURN_COLUMN 24
+#define DWARF2_CIE_DATA_ALIGNMENT (-4)
-#define md_operand(x)
+#define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum
+extern int tc_m68k_regname_to_dw2regnum (const char *regname);
-#define TARGET_WORD_SIZE 32
-#define TARGET_ARCH bfd_arch_m68k
+#define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions
+extern void tc_m68k_frame_initial_instructions (void);
-extern struct relax_type md_relax_table[];
-#define TC_GENERIC_RELAX_TABLE md_relax_table
+#ifdef TE_UCLINUX
+/* elf2flt does not honor PT_LOAD's from the executable.
+ .text and .eh_frame sections will not end up in the same segment and so
+ we cannot use PC-relative encoding for CFI. */
+# define CFI_DIFF_EXPR_OK 0
-/* Copied from write.c */
-/* This was formerly called M68K_AIM_KLUDGE. */
-#define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
- if (aim==0 && this_state== 4) { /* hard encoded from tc-m68k.c */ \
- aim=this_type->rlx_forward+1; /* Force relaxation into word mode */ \
- }
+/* However, follow compiler's guidance when it specifies encoding for LSDA. */
+# define CFI_DIFF_LSDA_OK 1
+#endif
-/* end of tc-m68k.h */
+struct broken_word;
+#define TC_CHECK_ADJUSTED_BROKEN_DOT_WORD(new_offset, brokw) \
+ tc_m68k_check_adjusted_broken_word ((offsetT) (new_offset), (brokw))
+extern void tc_m68k_check_adjusted_broken_word (offsetT,
+ struct broken_word *);
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