/* This file is tc-arm.h
+ Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
Modified by David Taylor (dtaylor@armltd.co.uk)
- Copyright (C) 1994, 1995 Free Software Foundation, Inc.
-
This file is part of GAS, the GNU Assembler.
GAS is free software; you can redistribute it and/or modify
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. */
+ 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_ARM 1
-#define COFF_MAGIC ARMMAGIC
-#define TARGET_ARCH bfd_arch_arm
+#ifndef TARGET_BYTES_BIG_ENDIAN
+#define TARGET_BYTES_BIG_ENDIAN 0
+#endif
+
+#define WORKING_DOT_WORD
-#define AOUT_MACHTYPE 0
+#define COFF_MAGIC ARMMAGIC
+#define TARGET_ARCH bfd_arch_arm
+
+#define AOUT_MACHTYPE 0
#define DIFF_EXPR_OK
-#define LITTLE_ENDIAN 1234
-#define BIG_ENDIAN 4321
+#ifdef LITTLE_ENDIAN
+#undef LITTLE_ENDIAN
+#endif
-#ifndef TARGET_BYTES_BIG_ENDIAN
-#define TARGET_BYTES_BIG_ENDIAN 0
+#ifdef BIG_ENDIAN
+#undef BIG_ENDIAN
#endif
-#ifdef OBJ_AOUT
-#ifdef TE_RISCIX
-#define TARGET_FORMAT "a.out-riscix"
-#else
-#if TARGET_BYTES_BIG_ENDIAN
-#define TARGET_FORMAT "a.out-arm-big"
+#define LITTLE_ENDIAN 1234
+#define BIG_ENDIAN 4321
+
+#if defined OBJ_AOUT
+#if defined TE_RISCIX
+# define TARGET_FORMAT "a.out-riscix"
+#elif defined TE_LINUX
+# define ARM_BI_ENDIAN
+# define TARGET_FORMAT "a.out-arm-linux"
+#elif defined TE_NetBSD
+# define TARGET_FORMAT "a.out-arm-netbsd"
#else
-#define TARGET_FORMAT "a.out-arm-little"
-#endif
-#endif
+# define ARM_BI_ENDIAN
+# define TARGET_FORMAT \
+ (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
#endif
+#endif /* OBJ_AOUT */
#ifdef OBJ_AIF
#define TARGET_FORMAT "aif"
#endif
+#if defined OBJ_COFF || defined OBJ_ELF
+# define ARM_BI_ENDIAN
+
+# define TC_VALIDATE_FIX(fixP, segType, Label) \
+ if (arm_validate_fix (fixP)) add_symbolP = fixP->fx_addsy
+ extern boolean arm_validate_fix PARAMS ((struct fix *));
+#endif
+
#ifdef OBJ_COFF
-#define ARM_BI_ENDIAN
-#ifdef TE_PE
-#define TC_FORCE_RELOCATION(x) ((x)->fx_r_type==BFD_RELOC_RVA)
-#define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
-#else
-#define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
-/* Tell tc-arm.c to support runtime endian selection. */
+# if defined TE_PE
+# define TC_FORCE_RELOCATION(x) ((x)->fx_r_type == BFD_RELOC_RVA)
+# ifdef TE_EPOC
+# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
+# else
+# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
+# endif
+# else
+# define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
+# endif
#endif
+
+#ifdef OBJ_ELF
+# define TARGET_FORMAT elf32_arm_target_format()
+ extern const char * elf32_arm_target_format PARAMS ((void));
+
+# define TC_FORCE_RELOCATION(fixp) arm_force_relocation (fixp)
+ extern int arm_force_relocation PARAMS ((struct fix *));
#endif
-#define md_convert_frag(b,s,f) {as_fatal ("arm convert_frag\n");}
+#define md_convert_frag(b, s, f) {as_fatal (_("arm convert_frag\n"));}
+
+#define md_cleanup() arm_cleanup ()
+ extern void arm_cleanup PARAMS ((void));
-#define md_after_pass_hook() arm_after_pass_hook ()
#define md_start_line_hook() arm_start_line_hook ()
-#define tc_frob_label(S) arm_frob_label (S)
+ extern void arm_start_line_hook PARAMS ((void));
-#define obj_fix_adjustable(fixP) 0
+#define tc_frob_label(S) arm_frob_label (S)
+ extern void arm_frob_label PARAMS ((symbolS *));
+
+/* We also need to mark assembler created symbols: */
+#define tc_frob_fake_label(S) arm_frob_label (S)
+
+/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
+ deliberately not been updated to mark assembler created stabs
+ symbols as Thumb. */
#define TC_FIX_TYPE PTR
#define TC_INIT_FIX_DATA(FIXP) ((FIXP)->tc_fix_data = NULL)
+#if defined OBJ_ELF || defined OBJ_COFF
+#include "write.h" /* For definition of fixS */
+#define obj_fix_adjustable(fixP) arm_fix_adjustable (fixP)
+boolean arm_fix_adjustable PARAMS ((fixS *));
+
+/* 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)
+#else
+#define obj_fix_adjustable(fixP) 0
+#endif
+
+/* We need to keep some local information on symbols. */
+
+#define TC_SYMFIELD_TYPE unsigned int
+#define ARM_GET_FLAG(s) (*symbol_get_tc (s))
+#define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v))
+#define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
+
+#define ARM_FLAG_THUMB (1 << 0) /* The symbol is a Thumb symbol rather than an Arm symbol. */
+#define ARM_FLAG_INTERWORK (1 << 1) /* The symbol is attached to code that suppports interworking. */
+#define THUMB_FLAG_FUNC (1 << 2) /* The symbol is attached to the start of a Thumb function. */
+
+#define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
+#define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
+#define THUMB_IS_FUNC(s) (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
+
+#define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
+#define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
+#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
+
#define TC_START_LABEL(C,STR) \
(c == ':' || (c == '/' && arm_data_in_code ()))
int arm_data_in_code PARAMS ((void));
#define tc_canonicalize_symbol_name(str) \
- arm_canonicalize_symbol_name (str);
-char *arm_canonicalize_symbol_name PARAMS ((char *));
-
-#if 0 /* It isn't as simple as this */
-#define tc_frob_symbol(sym,punt) \
-{ if (S_IS_LOCAL (sym)) \
- { \
- punt = 1; \
- sym->sy_used_in_reloc = 0; \
- }}
-#endif
-
-#if 0
-#define tc_crawl_symbol_chain(a) {;} /* not used */
-#define tc_headers_hook(a) {;} /* not used */
+ arm_canonicalize_symbol_name (str);
+char * arm_canonicalize_symbol_name PARAMS ((char *));
+
+#define obj_adjust_symtab() arm_adjust_symtab ()
+ extern void arm_adjust_symtab PARAMS ((void));
+
+#ifdef OBJ_ELF
+#define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
+void armelf_frob_symbol PARAMS ((symbolS *, int *));
#endif
#define tc_aout_pre_write_hook(x) {;} /* not used */
#define MD_APPLY_FIX3
-#define LOCAL_LABELS_FB 1
+#define LOCAL_LABEL(name) (name[0] == '.' && (name[1] == 'L'))
+#define LOCAL_LABELS_FB 1
+#ifdef OBJ_ELF
+#define LOCAL_LABEL_PREFIX '.'
+#endif
+
+/* 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. */
+
+#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
+ ( (FIX)->fx_r_type != BFD_RELOC_ARM_GOT12 \
+ && (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32 \
+ && (FIX)->fx_r_type != BFD_RELOC_32)
+
+#define TC_CONS_FIX_NEW cons_fix_new_arm
+ extern void cons_fix_new_arm PARAMS ((fragS *, int, int, expressionS *));
+
+/* Don't allow symbols to be discarded on GOT related relocs,
+ nor on globals. */
+#define tc_fix_adjustable(x) (\
+ ((x)->fx_r_type == BFD_RELOC_ARM_PLT32 \
+ || (x)->fx_r_type == BFD_RELOC_ARM_GOT32 \
+ || (x)->fx_r_type == BFD_RELOC_ARM_GOTOFF \
+ || S_IS_EXTERN ((x)->fx_addsy) \
+ || S_IS_WEAK ((x)->fx_addsy)) ? 0 : 1)
+
+#ifdef OBJ_ELF
+#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
+#else
+#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
+#endif
-/* Use defaults for OBJ_AOUT. */
-#ifndef OBJ_AOUT
-#define LOCAL_LABEL(name) ((name)[0] == '.' && (name)[1] == 'L')
-#define FAKE_LABEL_NAME ".L0\001"
+#ifdef OBJ_ELF
+#define DWARF2_LINE_MIN_INSN_LENGTH 2
#endif
-/* end of tc-arm.h */
+#define MAX_MEM_FOR_RS_ALIGN_CODE 31
+
+/* For frags in code sections we need to record whether they contain
+ ARM code or THUMB code. This is that if they have to be aligned,
+ they can contain the correct type of no-op instruction. */
+#define TC_FRAG_TYPE int
+#define TC_FRAG_INIT(fragp) arm_init_frag (fragp)
+extern void arm_init_frag PARAMS ((struct frag *));
+
+#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
+extern void arm_handle_align PARAMS ((struct frag *));
+
+#define md_do_align(N, FILL, LEN, MAX, LABEL) \
+ if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
+ { \
+ arm_frag_align_code (N, MAX); \
+ goto LABEL; \
+ }
+extern void arm_frag_align_code PARAMS ((int, int));
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