207 lines
6.7 KiB
C
207 lines
6.7 KiB
C
/* This file is tc-sh.h
|
|
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
|
|
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)
|
|
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_SH
|
|
|
|
#define TARGET_BYTES_BIG_ENDIAN 0
|
|
|
|
#define TARGET_ARCH bfd_arch_sh
|
|
|
|
#if ANSI_PROTOTYPES
|
|
struct segment_info_struct;
|
|
struct internal_reloc;
|
|
#endif
|
|
|
|
/* Whether in little endian mode. */
|
|
extern int shl;
|
|
|
|
/* Whether -relax was used. */
|
|
extern int sh_relax;
|
|
|
|
/* Whether -small was used. */
|
|
extern int sh_small;
|
|
|
|
/* Don't try to break words. */
|
|
#define WORKING_DOT_WORD
|
|
|
|
/* All SH instructions are multiples of 16 bits. */
|
|
#define DWARF2_LINE_MIN_INSN_LENGTH 2
|
|
|
|
/* We require .long, et. al., to be aligned correctly. */
|
|
#define md_cons_align(nbytes) sh_cons_align (nbytes)
|
|
extern void sh_cons_align PARAMS ((int));
|
|
|
|
/* When relaxing, we need to generate relocations for alignment
|
|
directives. */
|
|
#define HANDLE_ALIGN(frag) sh_handle_align (frag)
|
|
extern void sh_handle_align PARAMS ((fragS *));
|
|
|
|
#define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)
|
|
|
|
/* We need to force out some relocations when relaxing. */
|
|
#define TC_FORCE_RELOCATION(fix) sh_force_relocation (fix)
|
|
extern int sh_force_relocation ();
|
|
|
|
#ifdef OBJ_ELF
|
|
#define obj_fix_adjustable(fixP) sh_fix_adjustable(fixP)
|
|
struct fix;
|
|
extern boolean sh_fix_adjustable PARAMS ((struct fix *));
|
|
|
|
/* This arranges for gas/write.c to not apply a relocation if
|
|
obj_fix_adjustable() says it is not adjustable. */
|
|
#define TC_FIX_ADJUSTABLE(fixP) obj_fix_adjustable (fixP)
|
|
#endif
|
|
|
|
#define IGNORE_NONSTANDARD_ESCAPES
|
|
|
|
#define LISTING_HEADER (shl ? "Hitachi Super-H GAS Little Endian" : "Hitachi Super-H GAS Big Endian")
|
|
|
|
#define md_operand(x)
|
|
|
|
extern const struct relax_type md_relax_table[];
|
|
#define TC_GENERIC_RELAX_TABLE md_relax_table
|
|
|
|
/* We record, for each section, whether we have most recently output a
|
|
CODE reloc or a DATA reloc. */
|
|
struct sh_segment_info_type
|
|
{
|
|
int in_code : 1;
|
|
};
|
|
#define TC_SEGMENT_INFO_TYPE struct sh_segment_info_type
|
|
|
|
/* We call a routine to emit a reloc for a label, so that the linker
|
|
can align loads and stores without crossing a label. */
|
|
extern void sh_frob_label PARAMS ((void));
|
|
#define tc_frob_label(sym) sh_frob_label ()
|
|
|
|
/* We call a routine to flush pending output in order to output a DATA
|
|
reloc when required. */
|
|
extern void sh_flush_pending_output PARAMS ((void));
|
|
#define md_flush_pending_output() sh_flush_pending_output ()
|
|
|
|
#ifdef BFD_ASSEMBLER
|
|
#define tc_frob_file_before_adjust sh_frob_file
|
|
#else
|
|
#define tc_frob_file sh_frob_file
|
|
#endif
|
|
extern void sh_frob_file PARAMS ((void));
|
|
|
|
#ifdef OBJ_COFF
|
|
/* COFF specific definitions. */
|
|
|
|
#define DO_NOT_STRIP 0
|
|
|
|
/* This macro translates between an internal fix and an coff reloc type */
|
|
#define TC_COFF_FIX2RTYPE(fix) ((fix)->fx_r_type)
|
|
|
|
#define BFD_ARCH TARGET_ARCH
|
|
|
|
#define COFF_MAGIC (shl ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG)
|
|
|
|
/* We need to write out relocs which have not been completed. */
|
|
#define TC_COUNT_RELOC(fix) ((fix)->fx_addsy != NULL)
|
|
|
|
#define TC_RELOC_MANGLE(seg, fix, int, paddr) \
|
|
sh_coff_reloc_mangle ((seg), (fix), (int), (paddr))
|
|
extern void sh_coff_reloc_mangle
|
|
PARAMS ((struct segment_info_struct *, struct fix *,
|
|
struct internal_reloc *, unsigned int));
|
|
|
|
#define tc_coff_symbol_emit_hook(a) ; /* not used */
|
|
|
|
#define NEED_FX_R_TYPE 1
|
|
|
|
#define TC_KEEP_FX_OFFSET 1
|
|
|
|
#define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
|
|
extern int tc_coff_sizemachdep PARAMS ((fragS *));
|
|
|
|
#ifdef BFD_ASSEMBLER
|
|
#define SEG_NAME(SEG) segment_name (SEG)
|
|
#else
|
|
#define SEG_NAME(SEG) obj_segment_name (SEG)
|
|
#endif
|
|
|
|
/* We align most sections to a 16 byte boundary. */
|
|
#define SUB_SEGMENT_ALIGN(SEG) \
|
|
(strncmp (SEG_NAME (SEG), ".stabstr", 8) == 0 \
|
|
? 0 \
|
|
: ((strncmp (SEG_NAME (SEG), ".stab", 5) == 0 \
|
|
|| strcmp (SEG_NAME (SEG), ".ctors") == 0 \
|
|
|| strcmp (SEG_NAME (SEG), ".dtors") == 0) \
|
|
? 2 \
|
|
: (sh_small ? 2 : 4)))
|
|
|
|
#endif /* OBJ_COFF */
|
|
|
|
#ifdef OBJ_ELF
|
|
/* ELF specific definitions. */
|
|
|
|
/* Whether or not the target is big endian */
|
|
extern int target_big_endian;
|
|
|
|
#ifdef TE_LINUX
|
|
#define TARGET_FORMAT (shl ? "elf32-sh-linux" : "elf32-shbig-linux")
|
|
#else
|
|
#define TARGET_FORMAT (shl ? "elf32-shl" : "elf32-sh")
|
|
#endif
|
|
|
|
#define elf_tc_final_processing sh_elf_final_processing
|
|
extern void sh_elf_final_processing PARAMS ((void));
|
|
|
|
#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
|
|
|
|
#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
|
|
|
|
/* This is the relocation type for direct references to
|
|
GLOBAL_OFFSET_TABLE. It comes up in complicated expressions such
|
|
as _GLOBAL_OFFSET_TABLE_+[.-.L284], which cannot be expressed
|
|
normally with the regular expressions. The fixup specified here
|
|
when used at runtime implies that we should add the address of the
|
|
GOT to the specified location, and as a result we have simplified
|
|
the expression into something we can use. */
|
|
#define TC_RELOC_GLOBAL_OFFSET_TABLE BFD_RELOC_SH_GOTPC
|
|
|
|
/* 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.
|
|
|
|
We can't resolve references to the GOT or the PLT when creating the
|
|
object file, since these tables are only created by the linker.
|
|
Also, if the symbol is global, weak, common or not defined, the
|
|
assembler can't compute the appropriate reloc, since its location
|
|
can only be determined at link time. */
|
|
|
|
#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
|
|
((FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL \
|
|
&& (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL \
|
|
&& (FIX)->fx_r_type != BFD_RELOC_SH_GOTPC \
|
|
&& ((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))))
|
|
|
|
#endif /* OBJ_ELF */
|