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Diffstat (limited to 'gas/config/tc-frv.h')
| -rw-r--r-- | gas/config/tc-frv.h | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/gas/config/tc-frv.h b/gas/config/tc-frv.h new file mode 100644 index 000000000000..fb887a0d3533 --- /dev/null +++ b/gas/config/tc-frv.h @@ -0,0 +1,129 @@ +/* tc-frv.h -- Header file for tc-frv.c. + Copyright 2002 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) + 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, 59 Temple Place - Suite 330, + Boston, MA 02111-1307, 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 (frv_md_fdpic_enabled () \ + ? "elf32-frvfdpic" : "elf32-frv") +extern bfd_boolean frv_md_fdpic_enabled (void); + +#define TARGET_BYTES_BIG_ENDIAN 1 + +/* Permit temporary numeric labels. */ +#define LOCAL_LABELS_FB 1 + +#define DIFF_EXPR_OK /* .-foo gets turned into PC relative relocs */ + +/* We don't need to handle .word strangely. */ +#define WORKING_DOT_WORD + +/* Values passed to md_apply_fix3 don't include the symbol value. */ +#define MD_APPLY_SYM_VALUE(FIX) 0 + +extern void frv_tomcat_workaround PARAMS ((void)); +#define md_cleanup frv_tomcat_workaround + +#define md_number_to_chars frv_md_number_to_chars + +extern long frv_relax_frag PARAMS ((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 *)); + +/* 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 *)); + +/* 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 + +#undef GAS_CGEN_MAX_FIXUPS +#define GAS_CGEN_MAX_FIXUPS 1 + +void frv_frob_label PARAMS ((symbolS *)); +#define tc_frob_label(sym) frv_frob_label(sym) + +#define tc_gen_reloc gas_cgen_tc_gen_reloc + +#define md_cgen_record_fixup_exp frv_cgen_record_fixup_exp + +/* 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)); + +/* 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)); + +/* 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)); \ + unsigned 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) |