255 lines
8.8 KiB
C
255 lines
8.8 KiB
C
/* This file is tc-sh.h
|
|
Copyright (C) 1993-2022 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 3, 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, 51 Franklin Street - Fifth Floor,
|
|
Boston, MA 02110-1301, USA. */
|
|
|
|
#define TC_SH
|
|
|
|
#define TARGET_ARCH bfd_arch_sh
|
|
|
|
/* The type fixS is defined (to struct fix) in write.h, but write.h uses
|
|
definitions from this file. To avoid problems with including write.h
|
|
after the "right" definitions, don't; just forward-declare struct fix
|
|
here. */
|
|
struct fix;
|
|
struct segment_info_struct;
|
|
struct internal_reloc;
|
|
|
|
/* 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
|
|
|
|
/* We require .long, et. al., to be aligned correctly. */
|
|
#define md_cons_align(nbytes) sh_cons_align (nbytes)
|
|
extern void sh_cons_align (int);
|
|
|
|
/* We need to optimize expr with taking account of rs_align_test
|
|
frags. */
|
|
|
|
#ifdef OBJ_ELF
|
|
#define md_optimize_expr(l,o,r) sh_optimize_expr (l, o, r)
|
|
extern int sh_optimize_expr (expressionS *, operatorT, expressionS *);
|
|
#endif
|
|
|
|
/* When relaxing, we need to generate relocations for alignment
|
|
directives. */
|
|
#define HANDLE_ALIGN(frag) sh_handle_align (frag)
|
|
extern void sh_handle_align (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 (struct fix *);
|
|
|
|
/* This macro decides whether a particular reloc is an entry in a
|
|
switch table. It is used when relaxing, because the linker needs
|
|
to know about all such entries so that it can adjust them if
|
|
necessary. */
|
|
|
|
#define SWITCH_TABLE(FIX) \
|
|
((FIX)->fx_addsy != NULL \
|
|
&& (FIX)->fx_subsy != NULL \
|
|
&& S_GET_SEGMENT ((FIX)->fx_addsy) == text_section \
|
|
&& S_GET_SEGMENT ((FIX)->fx_subsy) == text_section \
|
|
&& ((FIX)->fx_r_type == BFD_RELOC_32 \
|
|
|| (FIX)->fx_r_type == BFD_RELOC_16 \
|
|
|| (FIX)->fx_r_type == BFD_RELOC_8))
|
|
|
|
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEC) \
|
|
(GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEC) \
|
|
|| TC_FORCE_RELOCATION (FIX) \
|
|
|| (sh_relax && SWITCH_TABLE (FIX)))
|
|
|
|
/* Don't complain when we leave fx_subsy around. */
|
|
#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
|
|
((md_register_arithmetic || (SEG) != reg_section) \
|
|
&& sh_relax && SWITCH_TABLE (FIX))
|
|
|
|
#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
|
|
|
|
/* SH_COUNT relocs are allowed outside of frag.
|
|
The target is also buggy and sets fix size too large for other relocs. */
|
|
#define TC_FX_SIZE_SLACK(FIX) \
|
|
((FIX)->fx_r_type == BFD_RELOC_SH_COUNT ? -1 : 2)
|
|
|
|
#define IGNORE_NONSTANDARD_ESCAPES
|
|
|
|
#define LISTING_HEADER \
|
|
(!target_big_endian \
|
|
? "Renesas / SuperH SH GAS Little Endian" \
|
|
: "Renesas / SuperH SH 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 (symbolS *);
|
|
#define tc_frob_label(sym) sh_frob_label (sym)
|
|
|
|
/* We call a routine to flush pending output in order to output a DATA
|
|
reloc when required. */
|
|
extern void sh_flush_pending_output (void);
|
|
#define md_flush_pending_output() sh_flush_pending_output ()
|
|
|
|
#define tc_frob_file_before_adjust sh_frob_file
|
|
extern void sh_frob_file (void);
|
|
|
|
|
|
#ifdef OBJ_COFF
|
|
/* COFF specific definitions. */
|
|
|
|
#define COFF_MAGIC (!target_big_endian ? SH_ARCH_MAGIC_LITTLE : SH_ARCH_MAGIC_BIG)
|
|
|
|
#define tc_coff_symbol_emit_hook(a) ; /* Not used. */
|
|
|
|
#define TC_KEEP_FX_OFFSET 1
|
|
|
|
#define SEG_NAME(SEG) segment_name (SEG)
|
|
|
|
/* We align most sections to a 16 byte boundary. */
|
|
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
|
|
(startswith (SEG_NAME (SEG), ".stabstr") \
|
|
? 0 \
|
|
: ((startswith (SEG_NAME (SEG), ".stab") \
|
|
|| 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 (!target_big_endian ? "elf32-sh-linux" : "elf32-shbig-linux")
|
|
#elif defined(TE_NetBSD)
|
|
#define TARGET_FORMAT (!target_big_endian ? "elf32-shl-nbsd" : "elf32-sh-nbsd")
|
|
#elif defined (TE_VXWORKS)
|
|
#define TARGET_FORMAT (!target_big_endian ? "elf32-shl-vxworks" : "elf32-sh-vxworks")
|
|
#elif defined (TE_UCLINUX)
|
|
#define TARGET_FORMAT sh_uclinux_target_format ()
|
|
extern const char * sh_uclinux_target_format (void);
|
|
#else
|
|
#define TARGET_FORMAT (!target_big_endian ? "elf32-shl" : "elf32-sh")
|
|
#endif
|
|
|
|
#define elf_tc_final_processing sh_elf_final_processing
|
|
extern void sh_elf_final_processing (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
|
|
|
|
#define tc_fix_adjustable(FIX) sh_fix_adjustable(FIX)
|
|
extern bool sh_fix_adjustable (struct fix *);
|
|
|
|
/* Values passed to md_apply_fix don't include symbol values. */
|
|
#define MD_APPLY_SYM_VALUE(FIX) 0
|
|
|
|
/* This expression evaluates to true if the relocation is for a local object
|
|
for which we still want to do the relocation at runtime. False if we
|
|
are willing to perform this relocation while building the .o file.
|
|
|
|
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_FORCE_RELOCATION_LOCAL(FIX) \
|
|
(GENERIC_FORCE_RELOCATION_LOCAL (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)
|
|
|
|
#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
|
|
((!md_register_arithmetic && (SEG) == reg_section) \
|
|
|| (sh_relax && SWITCH_TABLE (FIX)))
|
|
|
|
/* This keeps the subtracted symbol around, for use by PLT_PCREL
|
|
relocs. */
|
|
#define TC_FORCE_RELOCATION_SUB_ABS(FIX, SEG) \
|
|
((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \
|
|
|| (!md_register_arithmetic && (SEG) == reg_section))
|
|
|
|
/* Don't complain when we leave fx_subsy around. */
|
|
#undef TC_VALIDATE_FIX_SUB
|
|
#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
|
|
((md_register_arithmetic || (SEG) != reg_section) \
|
|
&& ((FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \
|
|
|| (sh_relax && SWITCH_TABLE (FIX))))
|
|
|
|
#define md_parse_name(name, exprP, mode, nextcharP) \
|
|
sh_parse_name ((name), (exprP), (mode), (nextcharP))
|
|
int sh_parse_name (char const *, expressionS *,
|
|
enum expr_mode, char *);
|
|
|
|
#define TC_CONS_FIX_NEW(FRAG, OFF, LEN, EXP, RELOC) \
|
|
sh_cons_fix_new ((FRAG), (OFF), (LEN), (EXP), (RELOC))
|
|
void sh_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
|
|
|
|
#define TARGET_USE_CFIPOP 1
|
|
|
|
#define tc_cfi_frame_initial_instructions sh_cfi_frame_initial_instructions
|
|
extern void sh_cfi_frame_initial_instructions (void);
|
|
|
|
#define tc_regname_to_dw2regnum sh_regname_to_dw2regnum
|
|
extern int sh_regname_to_dw2regnum (char *);
|
|
|
|
/* All SH instructions are multiples of 16 bits. */
|
|
#define DWARF2_LINE_MIN_INSN_LENGTH 2
|
|
#define DWARF2_DEFAULT_RETURN_COLUMN 17
|
|
#define DWARF2_CIE_DATA_ALIGNMENT (-4)
|
|
|
|
#endif /* OBJ_ELF */
|
|
|
|
#define H_TICK_HEX 1
|