/* tc-frv.h -- Header file for tc-frv.c.
- Copyright 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002-2020 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. */
+ the Free Software Foundation, 51 Franklin Street - Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#define TC_FRV
-#ifndef BFD_ASSEMBLER
-/* leading space so will compile with cc */
- #error FRV support requires BFD_ASSEMBLER
-#endif
-
#define LISTING_HEADER "FRV GAS "
/* The target BFD architecture. */
#define TARGET_ARCH bfd_arch_frv
-#define TARGET_FORMAT "elf32-frv"
+#define TARGET_FORMAT (frv_md_fdpic_enabled () \
+ ? "elf32-frvfdpic" : "elf32-frv")
+extern bfd_boolean frv_md_fdpic_enabled (void);
#define TARGET_BYTES_BIG_ENDIAN 1
/* We don't need to handle .word strangely. */
#define WORKING_DOT_WORD
-/* Values passed to md_apply_fix3 don't include the symbol value. */
+/* Values passed to md_apply_fix don't include the symbol value. */
#define MD_APPLY_SYM_VALUE(FIX) 0
-extern void frv_tomcat_workaround PARAMS ((void));
+extern void frv_tomcat_workaround (void);
#define md_cleanup frv_tomcat_workaround
#define md_number_to_chars frv_md_number_to_chars
+extern void frv_md_number_to_chars (char *, valueT, int);
-extern long frv_relax_frag PARAMS ((fragS *, long));
+extern long frv_relax_frag (fragS *, long);
#define md_relax_frag(segment, fragP, stretch) frv_relax_frag(fragP, stretch)
#define tc_fix_adjustable(FIX) frv_fix_adjustable (FIX)
struct fix;
-extern bfd_boolean frv_fix_adjustable PARAMS ((struct fix *));
+extern bfd_boolean frv_fix_adjustable (struct fix *);
/* When relaxing, we need to emit various relocs we otherwise wouldn't. */
#define TC_FORCE_RELOCATION(fix) frv_force_relocation (fix)
-extern int frv_force_relocation PARAMS ((struct fix *));
+extern int frv_force_relocation (struct fix *);
/* If we simplify subtractions that aren't SUB_SAME or SUB_ABS, we end
up with PCrel fixups, but since we don't have any PCrel relocs, we
crash. Preventing simplification gets us a good, early error. */
-#define TC_FORCE_RELOCATION_SUB_LOCAL(fixP) 1
+#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
#undef GAS_CGEN_MAX_FIXUPS
#define GAS_CGEN_MAX_FIXUPS 1
-void frv_frob_label PARAMS ((symbolS *));
+void frv_frob_label (symbolS *);
#define tc_frob_label(sym) frv_frob_label(sym)
#define tc_gen_reloc gas_cgen_tc_gen_reloc
/* Call md_pcrel_from_section(), not md_pcrel_from(). */
#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
-extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
+extern long md_pcrel_from_section (struct fix *, segT);
/* After all of the symbols have been adjusted, go over the file looking
for any relocations that pic won't support. */
#define tc_frob_file() frv_frob_file ()
-extern void frv_frob_file PARAMS ((void));
+extern void frv_frob_file (void);
+
+/* We don't want 0x00 for code alignment because this generates `add.p
+ gr0, gr0, gr0' patterns. Although it's fine as a nop instruction,
+ it has the VLIW packing bit set, which means if you have a bunch of
+ them in a row and attempt to execute them, you'll exceed the VLIW
+ capacity and fail. This also gets GDB confused sometimes, because
+ it won't set breakpoints in instructions other than the first of a
+ VLIW pack, so you used to be unable to set a breakpoint in the
+ initial instruction of a function that followed such
+ alignment-introduced instructions.
+
+ We could have arranged to emit `nop' instructions (0x80880000),
+ maybe even VLIW-pack sequences of nop instructions as much as
+ possible for the selected machine type, just in case the alignment
+ code actually happens to run, but this is probably too much effort
+ for little gain. This code is not meant to be run anyway, so just
+ emit nops. */
+#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4)
+#define HANDLE_ALIGN(FRAGP) do \
+ if ((FRAGP)->fr_type == rs_align_code) \
+ { \
+ valueT count = ((FRAGP)->fr_next->fr_address \
+ - ((FRAGP)->fr_address + (FRAGP)->fr_fix)); \
+ char *dest = (FRAGP)->fr_literal + (FRAGP)->fr_fix; \
+ if ((count & 3) != 0) \
+ { \
+ memset (dest, 0, (count & 3)); \
+ (FRAGP)->fr_fix += (count & 3); \
+ dest += (count & 3); \
+ count -= (count & 3); \
+ } \
+ if (count) \
+ { \
+ (FRAGP)->fr_var = 4; \
+ *dest++ = 0x80; \
+ *dest++ = 0x88; \
+ *dest++ = 0x00; \
+ *dest++ = 0x00; \
+ } \
+ } \
+ while (0)
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