125 lines
4.5 KiB
C
125 lines
4.5 KiB
C
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/* tc-frv.h -- Header file for tc-frv.c.
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Copyright (C) 2002-2022 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#define TC_FRV
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#define LISTING_HEADER "FRV GAS "
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/* The target BFD architecture. */
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#define TARGET_ARCH bfd_arch_frv
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#define TARGET_FORMAT (frv_md_fdpic_enabled () \
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? "elf32-frvfdpic" : "elf32-frv")
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extern bool frv_md_fdpic_enabled (void);
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#define TARGET_BYTES_BIG_ENDIAN 1
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/* Permit temporary numeric labels. */
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#define LOCAL_LABELS_FB 1
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#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */
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/* We don't need to handle .word strangely. */
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#define WORKING_DOT_WORD
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/* Values passed to md_apply_fix don't include the symbol value. */
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#define MD_APPLY_SYM_VALUE(FIX) 0
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extern void frv_tomcat_workaround (void);
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#define md_cleanup frv_tomcat_workaround
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#define md_number_to_chars frv_md_number_to_chars
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extern void frv_md_number_to_chars (char *, valueT, int);
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extern long frv_relax_frag (fragS *, long);
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#define md_relax_frag(segment, fragP, stretch) frv_relax_frag(fragP, stretch)
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#define tc_fix_adjustable(FIX) frv_fix_adjustable (FIX)
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struct fix;
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extern bool frv_fix_adjustable (struct fix *);
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/* When relaxing, we need to emit various relocs we otherwise wouldn't. */
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#define TC_FORCE_RELOCATION(fix) frv_force_relocation (fix)
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extern int frv_force_relocation (struct fix *);
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/* If we simplify subtractions that aren't SUB_SAME or SUB_ABS, we end
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up with PCrel fixups, but since we don't have any PCrel relocs, we
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crash. Preventing simplification gets us a good, early error. */
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#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1
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#undef GAS_CGEN_MAX_FIXUPS
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#define GAS_CGEN_MAX_FIXUPS 1
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void frv_frob_label (symbolS *);
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#define tc_frob_label(sym) frv_frob_label(sym)
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#define tc_gen_reloc gas_cgen_tc_gen_reloc
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#define md_cgen_record_fixup_exp frv_cgen_record_fixup_exp
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/* Call md_pcrel_from_section(), not md_pcrel_from(). */
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#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC)
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/* After all of the symbols have been adjusted, go over the file looking
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for any relocations that pic won't support. */
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#define tc_frob_file() frv_frob_file ()
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extern void frv_frob_file (void);
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/* We don't want 0x00 for code alignment because this generates `add.p
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gr0, gr0, gr0' patterns. Although it's fine as a nop instruction,
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it has the VLIW packing bit set, which means if you have a bunch of
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them in a row and attempt to execute them, you'll exceed the VLIW
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capacity and fail. This also gets GDB confused sometimes, because
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it won't set breakpoints in instructions other than the first of a
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VLIW pack, so you used to be unable to set a breakpoint in the
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initial instruction of a function that followed such
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alignment-introduced instructions.
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We could have arranged to emit `nop' instructions (0x80880000),
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maybe even VLIW-pack sequences of nop instructions as much as
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possible for the selected machine type, just in case the alignment
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code actually happens to run, but this is probably too much effort
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for little gain. This code is not meant to be run anyway, so just
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emit nops. */
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#define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4)
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#define HANDLE_ALIGN(FRAGP) do \
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if ((FRAGP)->fr_type == rs_align_code) \
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{ \
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valueT count = ((FRAGP)->fr_next->fr_address \
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- ((FRAGP)->fr_address + (FRAGP)->fr_fix)); \
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char *dest = (FRAGP)->fr_literal + (FRAGP)->fr_fix; \
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if ((count & 3) != 0) \
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{ \
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memset (dest, 0, (count & 3)); \
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(FRAGP)->fr_fix += (count & 3); \
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dest += (count & 3); \
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count -= (count & 3); \
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} \
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if (count) \
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{ \
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(FRAGP)->fr_var = 4; \
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*dest++ = 0x80; \
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*dest++ = 0x88; \
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*dest++ = 0x00; \
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*dest++ = 0x00; \
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} \
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} \
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while (0)
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