X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gas%2Fconfig%2Ftc-frv.h;h=4ed388f4b07192829407034440dbcd1a7d427928;hb=7b14583ef0c858dc8f29c127f70b034f7f5d4ad2;hp=b399cd933102c1b880a1c027ef63905a68966146;hpb=2ee563b53258d390d7446e90a67f465d504ae44c;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/config/tc-frv.h b/gas/config/tc-frv.h index b399cd9331..4ed388f4b0 100644 --- a/gas/config/tc-frv.h +++ b/gas/config/tc-frv.h @@ -1,11 +1,11 @@ /* tc-frv.h -- Header file for tc-frv.c. - Copyright (C) 2002 Free Software Foundation, Inc. + Copyright (C) 2002-2016 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, @@ -15,29 +15,22 @@ 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 -/* call md_pcrel_from_section, not md_pcrel_from */ -long md_pcrel_from_section PARAMS ((struct fix *, segT)); -#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from_section (FIXP, SEC) - /* Permit temporary numeric labels. */ #define LOCAL_LABELS_FB 1 @@ -46,33 +39,35 @@ long md_pcrel_from_section PARAMS ((struct fix *, segT)); /* We don't need to handle .word strangely. */ #define WORKING_DOT_WORD -#define md_apply_fix3 gas_cgen_md_apply_fix3 +/* 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 obj_fix_adjustable(fixP) frv_fix_adjustable (fixP) -extern boolean frv_fix_adjustable PARAMS ((struct fix *)); - -#ifdef OBJ_ELF -/* 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) -#endif +#define tc_fix_adjustable(FIX) frv_fix_adjustable (FIX) +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(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 @@ -80,10 +75,51 @@ void frv_frob_label PARAMS ((symbolS *)); #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(FIXP, SEC) md_pcrel_from_section (FIXP, SEC) -extern long md_pcrel_from_section PARAMS ((struct fix *, segT)); +#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section (FIX, SEC) +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)