/* This file is tc-arm.h
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 1994-2021 Free Software Foundation, Inc.
Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
Modified by David Taylor (dtaylor@armltd.co.uk)
struct fix;
-#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 ARM_BI_ENDIAN
-# define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
-# endif
-#elif defined OBJ_AIF
-# define TARGET_FORMAT "aif"
-#elif defined OBJ_COFF
+#if defined OBJ_COFF
# define ARM_BI_ENDIAN
# if defined TE_PE
-# if defined TE_EPOC
-# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
-# elif defined TE_WINCE
+# if defined TE_WINCE
# define TARGET_FORMAT (target_big_endian ? "pe-arm-wince-big" : "pe-arm-wince-little")
# else
# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
# define TARGET_FORMAT elf32_arm_target_format ()
#endif
+/* We support double slash line-comments for compatibility with the ARM AArch64 Assembler. */
+#define DOUBLESLASH_LINE_COMMENTS
+
+/* We conditionally support labels without a colon. */
+#define LABELS_WITHOUT_COLONS codecomposer_syntax
+extern bfd_boolean codecomposer_syntax;
+
+#define tc_symbol_chars arm_symbol_chars
+extern const char arm_symbol_chars[];
+
#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
+extern unsigned int arm_frag_max_var (struct frag *);
+#define md_frag_max_var arm_frag_max_var
+
#define md_relax_frag(segment, fragp, stretch) \
- arm_relax_frag(segment, fragp, stretch)
+ arm_relax_frag (segment, fragp, stretch)
extern int arm_relax_frag (asection *, struct frag *, long);
#define md_optimize_expr(l,o,r) arm_optimize_expr (l, o, r)
#define md_start_line_hook() arm_start_line_hook ()
+#define TC_START_LABEL_WITHOUT_COLON(NUL_CHAR, NEXT_CHAR) \
+ tc_start_label_without_colon ()
+extern bfd_boolean tc_start_label_without_colon (void);
+
#define tc_frob_label(S) arm_frob_label (S)
/* We also need to mark assembler created symbols: */
#define md_end arm_md_end
extern void arm_md_end (void);
bfd_boolean arm_is_eabi (void);
+
+#define md_post_relax_hook arm_md_post_relax ()
+extern void arm_md_post_relax (void);
#endif
/* NOTE: The fake label creation in stabs.c:s_stab_generic() has
#define ARM_IS_THUMB(s) (ARM_GET_FLAG (s) & ARM_FLAG_THUMB)
#define ARM_IS_INTERWORK(s) (ARM_GET_FLAG (s) & ARM_FLAG_INTERWORK)
+
#ifdef OBJ_ELF
/* For ELF objects THUMB_IS_FUNC is inferred from
ARM_IS_THUMB and the function type. */
-#define THUMB_IS_FUNC(s) \
- ((arm_is_eabi () \
- && (ARM_IS_THUMB (s)) \
- && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)) \
- || (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC))
-
-#define ARM_IS_FUNC(s) \
- ((arm_is_eabi () \
- && !(ARM_IS_THUMB (s)) \
- /* && !(THUMB_FLAG_FUNC & ARM_GET_FLAG (s)) \ */ \
+#define THUMB_IS_FUNC(s) \
+ ((s) != NULL \
+ && ((arm_is_eabi () \
+ && (ARM_IS_THUMB (s)) \
+ && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)) \
+ || (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)))
+
+#define ARM_IS_FUNC(s) \
+ (((s) != NULL \
+ && arm_is_eabi () \
+ && !(ARM_IS_THUMB (s)) \
+ /* && !(THUMB_FLAG_FUNC & ARM_GET_FLAG (s)) \ */ \
&& (symbol_get_bfdsym (s)->flags & BSF_FUNCTION)))
#else
-#define THUMB_IS_FUNC(s) (ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
+
+#define THUMB_IS_FUNC(s) ((s) && ARM_GET_FLAG (s) & THUMB_FLAG_FUNC)
#define ARM_IS_FUNC(s) (!THUMB_IS_FUNC (s) \
- && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))
+ && (s) && (symbol_get_bfdsym (s)->flags & BSF_FUNCTION))
#endif
#define ARM_SET_THUMB(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_THUMB) : ARM_RESET_FLAG (s, ARM_FLAG_THUMB))
#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
void arm_copy_symbol_attributes (symbolS *, symbolS *);
+
#ifndef TC_COPY_SYMBOL_ATTRIBUTES
#define TC_COPY_SYMBOL_ATTRIBUTES(DEST, SRC) \
(arm_copy_symbol_attributes (DEST, SRC))
#endif
-#define TC_START_LABEL(C,STR) (c == ':' || (c == '/' && arm_data_in_code ()))
+#define TC_START_LABEL(STR, NUL_CHAR, NEXT_CHAR) \
+ (NEXT_CHAR == ':' || (NEXT_CHAR == '/' && arm_data_in_code ()))
#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
#define obj_adjust_symtab() arm_adjust_symtab ()
pcrel, but it is easier to be safe than sorry. */
#define TC_FORCE_RELOCATION_LOCAL(FIX) \
- (!(FIX)->fx_pcrel \
+ (GENERIC_FORCE_RELOCATION_LOCAL (FIX) \
|| (FIX)->fx_r_type == BFD_RELOC_ARM_GOT32 \
|| (FIX)->fx_r_type == BFD_RELOC_32 \
- || TC_FORCE_RELOCATION (FIX))
+ || ((FIX)->fx_addsy != NULL \
+ && S_IS_WEAK ((FIX)->fx_addsy)))
/* Force output of R_ARM_REL32 relocations against thumb function symbols.
This is needed to ensure the low bit is handled correctly. */
#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
- (THUMB_IS_FUNC ((FIX)->fx_addsy) \
- || !SEG_NORMAL (SEG))
+ (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \
+ || THUMB_IS_FUNC ((FIX)->fx_addsy))
+
+#define TC_FORCE_RELOCATION_ABS(FIX) \
+ (((FIX)->fx_pcrel \
+ && (FIX)->fx_r_type != BFD_RELOC_32 \
+ && (FIX)->fx_r_type != BFD_RELOC_ARM_GOT32) \
+ || TC_FORCE_RELOCATION(FIX))
#define TC_CONS_FIX_NEW cons_fix_new_arm
-#define MAX_MEM_FOR_RS_ALIGN_CODE 31
+#define MAX_MEM_ALIGNMENT_BYTES 6
+#define MAX_MEM_FOR_RS_ALIGN_CODE ((1 << MAX_MEM_ALIGNMENT_BYTES) - 1)
/* 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)
+struct arm_frag_type
+{
+ int thumb_mode;
+#ifdef OBJ_ELF
+ /* If there is a mapping symbol at offset 0 in this frag,
+ it will be saved in FIRST_MAP. If there are any mapping
+ symbols in this frag, the last one will be saved in
+ LAST_MAP. */
+ symbolS *first_map, *last_map;
+#endif
+};
+
+static inline int
+arm_min (int am_p1, int am_p2)
+{
+ return am_p1 < am_p2 ? am_p1 : am_p2;
+}
+
+#define TC_FRAG_TYPE struct arm_frag_type
+#define TC_FRAG_INIT(fragp, max_bytes) arm_init_frag (fragp, max_bytes)
+#define TC_ALIGN_ZERO_IS_DEFAULT 1
#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
+/* PR gas/19276: COFF/PE segment alignment is already handled in coff_frob_section(). */
+#ifndef TE_PE
+#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
+ ((!(FRCHAIN)->frch_next && subseg_text_p (SEG)) \
+ ? arm_min (2, get_recorded_alignment (SEG)) : 0)
+#endif
#define md_do_align(N, FILL, LEN, MAX, LABEL) \
if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
/* Registers are generally saved at negative offsets to the CFA. */
#define DWARF2_CIE_DATA_ALIGNMENT (-4)
+/* State variables for predication block handling. */
+enum pred_state
+{
+ OUTSIDE_PRED_BLOCK, MANUAL_PRED_BLOCK, AUTOMATIC_PRED_BLOCK
+};
+enum pred_type {
+ SCALAR_PRED, VECTOR_PRED
+};
+struct current_pred
+{
+ int mask;
+ enum pred_state state;
+ int cc;
+ int block_length;
+ char *insn;
+ int state_handled;
+ int warn_deprecated;
+ int insn_cond;
+ enum pred_type type;
+};
+
#ifdef OBJ_ELF
# define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
# define md_elf_section_change_hook() arm_elf_change_section ()
struct arm_segment_info_type
{
enum mstate mapstate;
+
+ /* Bit N indicates that an R_ARM_NONE relocation has been output for
+ __aeabi_unwind_cpp_prN already if set. This enables dependencies to be
+ emitted only once per section, to save unnecessary bloat. */
unsigned int marked_pr_dependency;
+
+ struct current_pred current_pred;
};
/* We want .cfi_* pseudo-ops for generating unwind info. */
#ifdef OBJ_ELF
/* Values passed to md_apply_fix don't include the symbol value. */
-# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX)
+# define MD_APPLY_SYM_VALUE(FIX) arm_apply_sym_value (FIX, this_segment)
#endif
#ifdef OBJ_COFF
#define MD_PCREL_FROM_SECTION(F,S) md_pcrel_from_section(F,S)
-extern long md_pcrel_from_section (struct fix *, segT);
extern void arm_frag_align_code (int, int);
extern void arm_validate_fix (struct fix *);
extern const char * elf32_arm_target_format (void);
extern char * arm_canonicalize_symbol_name (char *);
extern void arm_adjust_symtab (void);
extern void armelf_frob_symbol (symbolS *, int *);
-extern void cons_fix_new_arm (fragS *, int, int, expressionS *);
-extern void arm_init_frag (struct frag *);
+extern void cons_fix_new_arm (fragS *, int, int, expressionS *,
+ bfd_reloc_code_real_type);
+extern void arm_init_frag (struct frag *, int);
extern void arm_handle_align (struct frag *);
extern bfd_boolean arm_fix_adjustable (struct fix *);
extern int arm_elf_section_type (const char *, size_t);
#ifdef OBJ_ELF
#define CONVERT_SYMBOLIC_ATTRIBUTE(name) arm_convert_symbolic_attribute (name)
extern int arm_convert_symbolic_attribute (const char *);
-extern int arm_apply_sym_value (struct fix *);
+extern int arm_apply_sym_value (struct fix *, segT);
#endif
+
+#define tc_comment_chars arm_comment_chars
+extern char arm_comment_chars[];
+
+#define tc_line_separator_chars arm_line_separator_chars
+extern char arm_line_separator_chars[];
+
+#define TC_EQUAL_IN_INSN(c, s) arm_tc_equal_in_insn ((c), (s))
+extern bfd_boolean arm_tc_equal_in_insn (int, char *);
+
+#define TC_LARGEST_EXPONENT_IS_NORMAL(PRECISION) \
+ arm_is_largest_exponent_ok ((PRECISION))
+int arm_is_largest_exponent_ok (int precision);
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