diff options
Diffstat (limited to 'binutils-2.24/gas/config/tc-sh.c')
| -rw-r--r-- | binutils-2.24/gas/config/tc-sh.c | 4642 |
1 files changed, 0 insertions, 4642 deletions
diff --git a/binutils-2.24/gas/config/tc-sh.c b/binutils-2.24/gas/config/tc-sh.c deleted file mode 100644 index 6b7bd5a3..00000000 --- a/binutils-2.24/gas/config/tc-sh.c +++ /dev/null @@ -1,4642 +0,0 @@ -/* tc-sh.c -- Assemble code for the Renesas / SuperH SH - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, - 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 - 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 3, 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, 51 Franklin Street - Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* Written By Steve Chamberlain <sac@cygnus.com> */ - -#include "as.h" -#include "subsegs.h" -#define DEFINE_TABLE -#include "opcodes/sh-opc.h" -#include "safe-ctype.h" -#include "struc-symbol.h" - -#ifdef OBJ_ELF -#include "elf/sh.h" -#endif - -#include "dwarf2dbg.h" -#include "dw2gencfi.h" - -typedef struct - { - sh_arg_type type; - int reg; - expressionS immediate; - } -sh_operand_info; - -const char comment_chars[] = "!"; -const char line_separator_chars[] = ";"; -const char line_comment_chars[] = "!#"; - -static void s_uses (int); -static void s_uacons (int); - -#ifdef OBJ_ELF -static void sh_elf_cons (int); - -symbolS *GOT_symbol; /* Pre-defined "_GLOBAL_OFFSET_TABLE_" */ -#endif - -static void -big (int ignore ATTRIBUTE_UNUSED) -{ - if (! target_big_endian) - as_bad (_("directive .big encountered when option -big required")); - - /* Stop further messages. */ - target_big_endian = 1; -} - -static void -little (int ignore ATTRIBUTE_UNUSED) -{ - if (target_big_endian) - as_bad (_("directive .little encountered when option -little required")); - - /* Stop further messages. */ - target_big_endian = 0; -} - -/* This table describes all the machine specific pseudo-ops the assembler - has to support. The fields are: - pseudo-op name without dot - function to call to execute this pseudo-op - Integer arg to pass to the function. */ - -const pseudo_typeS md_pseudo_table[] = -{ -#ifdef OBJ_ELF - {"long", sh_elf_cons, 4}, - {"int", sh_elf_cons, 4}, - {"word", sh_elf_cons, 2}, - {"short", sh_elf_cons, 2}, -#else - {"int", cons, 4}, - {"word", cons, 2}, -#endif /* OBJ_ELF */ - {"big", big, 0}, - {"form", listing_psize, 0}, - {"little", little, 0}, - {"heading", listing_title, 0}, - {"import", s_ignore, 0}, - {"page", listing_eject, 0}, - {"program", s_ignore, 0}, - {"uses", s_uses, 0}, - {"uaword", s_uacons, 2}, - {"ualong", s_uacons, 4}, - {"uaquad", s_uacons, 8}, - {"2byte", s_uacons, 2}, - {"4byte", s_uacons, 4}, - {"8byte", s_uacons, 8}, -#ifdef HAVE_SH64 - {"mode", s_sh64_mode, 0 }, - - /* Have the old name too. */ - {"isa", s_sh64_mode, 0 }, - - /* Assert that the right ABI is used. */ - {"abi", s_sh64_abi, 0 }, - - { "vtable_inherit", sh64_vtable_inherit, 0 }, - { "vtable_entry", sh64_vtable_entry, 0 }, -#endif /* HAVE_SH64 */ - {0, 0, 0} -}; - -int sh_relax; /* set if -relax seen */ - -/* Whether -small was seen. */ - -int sh_small; - -/* Flag to generate relocations against symbol values for local symbols. */ - -static int dont_adjust_reloc_32; - -/* Flag to indicate that '$' is allowed as a register prefix. */ - -static int allow_dollar_register_prefix; - -/* Preset architecture set, if given; zero otherwise. */ - -static unsigned int preset_target_arch; - -/* The bit mask of architectures that could - accommodate the insns seen so far. */ -static unsigned int valid_arch; - -#ifdef OBJ_ELF -/* Whether --fdpic was given. */ -static int sh_fdpic; -#endif - -const char EXP_CHARS[] = "eE"; - -/* Chars that mean this number is a floating point constant. */ -/* As in 0f12.456 */ -/* or 0d1.2345e12 */ -const char FLT_CHARS[] = "rRsSfFdDxXpP"; - -#define C(a,b) ENCODE_RELAX(a,b) - -#define ENCODE_RELAX(what,length) (((what) << 4) + (length)) -#define GET_WHAT(x) ((x>>4)) - -/* These are the three types of relaxable instruction. */ -/* These are the types of relaxable instructions; except for END which is - a marker. */ -#define COND_JUMP 1 -#define COND_JUMP_DELAY 2 -#define UNCOND_JUMP 3 - -#ifdef HAVE_SH64 - -/* A 16-bit (times four) pc-relative operand, at most expanded to 32 bits. */ -#define SH64PCREL16_32 4 -/* A 16-bit (times four) pc-relative operand, at most expanded to 64 bits. */ -#define SH64PCREL16_64 5 - -/* Variants of the above for adjusting the insn to PTA or PTB according to - the label. */ -#define SH64PCREL16PT_32 6 -#define SH64PCREL16PT_64 7 - -/* A MOVI expansion, expanding to at most 32 or 64 bits. */ -#define MOVI_IMM_32 8 -#define MOVI_IMM_32_PCREL 9 -#define MOVI_IMM_64 10 -#define MOVI_IMM_64_PCREL 11 -#define END 12 - -#else /* HAVE_SH64 */ - -#define END 4 - -#endif /* HAVE_SH64 */ - -#define UNDEF_DISP 0 -#define COND8 1 -#define COND12 2 -#define COND32 3 -#define UNDEF_WORD_DISP 4 - -#define UNCOND12 1 -#define UNCOND32 2 - -#ifdef HAVE_SH64 -#define UNDEF_SH64PCREL 0 -#define SH64PCREL16 1 -#define SH64PCREL32 2 -#define SH64PCREL48 3 -#define SH64PCREL64 4 -#define SH64PCRELPLT 5 - -#define UNDEF_MOVI 0 -#define MOVI_16 1 -#define MOVI_32 2 -#define MOVI_48 3 -#define MOVI_64 4 -#define MOVI_PLT 5 -#define MOVI_GOTOFF 6 -#define MOVI_GOTPC 7 -#endif /* HAVE_SH64 */ - -/* Branch displacements are from the address of the branch plus - four, thus all minimum and maximum values have 4 added to them. */ -#define COND8_F 258 -#define COND8_M -252 -#define COND8_LENGTH 2 - -/* There is one extra instruction before the branch, so we must add - two more bytes to account for it. */ -#define COND12_F 4100 -#define COND12_M -4090 -#define COND12_LENGTH 6 - -#define COND12_DELAY_LENGTH 4 - -/* ??? The minimum and maximum values are wrong, but this does not matter - since this relocation type is not supported yet. */ -#define COND32_F (1<<30) -#define COND32_M -(1<<30) -#define COND32_LENGTH 14 - -#define UNCOND12_F 4098 -#define UNCOND12_M -4092 -#define UNCOND12_LENGTH 2 - -/* ??? The minimum and maximum values are wrong, but this does not matter - since this relocation type is not supported yet. */ -#define UNCOND32_F (1<<30) -#define UNCOND32_M -(1<<30) -#define UNCOND32_LENGTH 14 - -#ifdef HAVE_SH64 -/* The trivial expansion of a SH64PCREL16 relaxation is just a "PT label, - TRd" as is the current insn, so no extra length. Note that the "reach" - is calculated from the address *after* that insn, but the offset in the - insn is calculated from the beginning of the insn. We also need to - take into account the implicit 1 coded as the "A" in PTA when counting - forward. If PTB reaches an odd address, we trap that as an error - elsewhere, so we don't have to have different relaxation entries. We - don't add a one to the negative range, since PTB would then have the - farthest backward-reaching value skipped, not generated at relaxation. */ -#define SH64PCREL16_F (32767 * 4 - 4 + 1) -#define SH64PCREL16_M (-32768 * 4 - 4) -#define SH64PCREL16_LENGTH 0 - -/* The next step is to change that PT insn into - MOVI ((label - datalabel Ln) >> 16) & 65535, R25 - SHORI (label - datalabel Ln) & 65535, R25 - Ln: - PTREL R25,TRd - which means two extra insns, 8 extra bytes. This is the limit for the - 32-bit ABI. - - The expressions look a bit bad since we have to adjust this to avoid overflow on a - 32-bit host. */ -#define SH64PCREL32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4) -#define SH64PCREL32_LENGTH (2 * 4) - -/* Similarly, we just change the MOVI and add a SHORI for the 48-bit - expansion. */ -#if BFD_HOST_64BIT_LONG -/* The "reach" type is long, so we can only do this for a 64-bit-long - host. */ -#define SH64PCREL32_M (((long) -1 << 30) * 2 - 4) -#define SH64PCREL48_F ((((long) 1 << 47) - 1) - 4) -#define SH64PCREL48_M (((long) -1 << 47) - 4) -#define SH64PCREL48_LENGTH (3 * 4) -#else -/* If the host does not have 64-bit longs, just make this state identical - in reach to the 32-bit state. Note that we have a slightly incorrect - reach, but the correct one above will overflow a 32-bit number. */ -#define SH64PCREL32_M (((long) -1 << 30) * 2) -#define SH64PCREL48_F SH64PCREL32_F -#define SH64PCREL48_M SH64PCREL32_M -#define SH64PCREL48_LENGTH (3 * 4) -#endif /* BFD_HOST_64BIT_LONG */ - -/* And similarly for the 64-bit expansion; a MOVI + SHORI + SHORI + SHORI - + PTREL sequence. */ -#define SH64PCREL64_LENGTH (4 * 4) - -/* For MOVI, we make the MOVI + SHORI... expansion you can see in the - SH64PCREL expansions. The PCREL one is similar, but the other has no - pc-relative reach; it must be fully expanded in - shmedia_md_estimate_size_before_relax. */ -#define MOVI_16_LENGTH 0 -#define MOVI_16_F (32767 - 4) -#define MOVI_16_M (-32768 - 4) -#define MOVI_32_LENGTH 4 -#define MOVI_32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4) -#define MOVI_48_LENGTH 8 - -#if BFD_HOST_64BIT_LONG -/* The "reach" type is long, so we can only do this for a 64-bit-long - host. */ -#define MOVI_32_M (((long) -1 << 30) * 2 - 4) -#define MOVI_48_F ((((long) 1 << 47) - 1) - 4) -#define MOVI_48_M (((long) -1 << 47) - 4) -#else -/* If the host does not have 64-bit longs, just make this state identical - in reach to the 32-bit state. Note that we have a slightly incorrect - reach, but the correct one above will overflow a 32-bit number. */ -#define MOVI_32_M (((long) -1 << 30) * 2) -#define MOVI_48_F MOVI_32_F -#define MOVI_48_M MOVI_32_M -#endif /* BFD_HOST_64BIT_LONG */ - -#define MOVI_64_LENGTH 12 -#endif /* HAVE_SH64 */ - -#define EMPTY { 0, 0, 0, 0 } - -const relax_typeS md_relax_table[C (END, 0)] = { - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - EMPTY, - /* C (COND_JUMP, COND8) */ - { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP, COND12) }, - /* C (COND_JUMP, COND12) */ - { COND12_F, COND12_M, COND12_LENGTH, C (COND_JUMP, COND32), }, - /* C (COND_JUMP, COND32) */ - { COND32_F, COND32_M, COND32_LENGTH, 0, }, - /* C (COND_JUMP, UNDEF_WORD_DISP) */ - { 0, 0, COND32_LENGTH, 0, }, - EMPTY, EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - EMPTY, - /* C (COND_JUMP_DELAY, COND8) */ - { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP_DELAY, COND12) }, - /* C (COND_JUMP_DELAY, COND12) */ - { COND12_F, COND12_M, COND12_DELAY_LENGTH, C (COND_JUMP_DELAY, COND32), }, - /* C (COND_JUMP_DELAY, COND32) */ - { COND32_F, COND32_M, COND32_LENGTH, 0, }, - /* C (COND_JUMP_DELAY, UNDEF_WORD_DISP) */ - { 0, 0, COND32_LENGTH, 0, }, - EMPTY, EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - EMPTY, - /* C (UNCOND_JUMP, UNCOND12) */ - { UNCOND12_F, UNCOND12_M, UNCOND12_LENGTH, C (UNCOND_JUMP, UNCOND32), }, - /* C (UNCOND_JUMP, UNCOND32) */ - { UNCOND32_F, UNCOND32_M, UNCOND32_LENGTH, 0, }, - EMPTY, - /* C (UNCOND_JUMP, UNDEF_WORD_DISP) */ - { 0, 0, UNCOND32_LENGTH, 0, }, - EMPTY, EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - -#ifdef HAVE_SH64 - /* C (SH64PCREL16_32, SH64PCREL16) */ - EMPTY, - { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_32, SH64PCREL32) }, - /* C (SH64PCREL16_32, SH64PCREL32) */ - { 0, 0, SH64PCREL32_LENGTH, 0 }, - EMPTY, EMPTY, - /* C (SH64PCREL16_32, SH64PCRELPLT) */ - { 0, 0, SH64PCREL32_LENGTH, 0 }, - EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (SH64PCREL16_64, SH64PCREL16) */ - EMPTY, - { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_64, SH64PCREL32) }, - /* C (SH64PCREL16_64, SH64PCREL32) */ - { SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, C (SH64PCREL16_64, SH64PCREL48) }, - /* C (SH64PCREL16_64, SH64PCREL48) */ - { SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16_64, SH64PCREL64) }, - /* C (SH64PCREL16_64, SH64PCREL64) */ - { 0, 0, SH64PCREL64_LENGTH, 0 }, - /* C (SH64PCREL16_64, SH64PCRELPLT) */ - { 0, 0, SH64PCREL64_LENGTH, 0 }, - EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (SH64PCREL16PT_32, SH64PCREL16) */ - EMPTY, - { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_32, SH64PCREL32) }, - /* C (SH64PCREL16PT_32, SH64PCREL32) */ - { 0, 0, SH64PCREL32_LENGTH, 0 }, - EMPTY, EMPTY, - /* C (SH64PCREL16PT_32, SH64PCRELPLT) */ - { 0, 0, SH64PCREL32_LENGTH, 0 }, - EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (SH64PCREL16PT_64, SH64PCREL16) */ - EMPTY, - { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_64, SH64PCREL32) }, - /* C (SH64PCREL16PT_64, SH64PCREL32) */ - { SH64PCREL32_F, - SH64PCREL32_M, - SH64PCREL32_LENGTH, - C (SH64PCREL16PT_64, SH64PCREL48) }, - /* C (SH64PCREL16PT_64, SH64PCREL48) */ - { SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16PT_64, SH64PCREL64) }, - /* C (SH64PCREL16PT_64, SH64PCREL64) */ - { 0, 0, SH64PCREL64_LENGTH, 0 }, - /* C (SH64PCREL16PT_64, SH64PCRELPLT) */ - { 0, 0, SH64PCREL64_LENGTH, 0}, - EMPTY, EMPTY, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (MOVI_IMM_32, UNDEF_MOVI) */ - { 0, 0, MOVI_32_LENGTH, 0 }, - /* C (MOVI_IMM_32, MOVI_16) */ - { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32, MOVI_32) }, - /* C (MOVI_IMM_32, MOVI_32) */ - { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, 0 }, - EMPTY, EMPTY, EMPTY, - /* C (MOVI_IMM_32, MOVI_GOTOFF) */ - { 0, 0, MOVI_32_LENGTH, 0 }, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (MOVI_IMM_32_PCREL, MOVI_16) */ - EMPTY, - { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32_PCREL, MOVI_32) }, - /* C (MOVI_IMM_32_PCREL, MOVI_32) */ - { 0, 0, MOVI_32_LENGTH, 0 }, - EMPTY, EMPTY, - /* C (MOVI_IMM_32_PCREL, MOVI_PLT) */ - { 0, 0, MOVI_32_LENGTH, 0 }, - EMPTY, - /* C (MOVI_IMM_32_PCREL, MOVI_GOTPC) */ - { 0, 0, MOVI_32_LENGTH, 0 }, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (MOVI_IMM_64, UNDEF_MOVI) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - /* C (MOVI_IMM_64, MOVI_16) */ - { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64, MOVI_32) }, - /* C (MOVI_IMM_64, MOVI_32) */ - { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64, MOVI_48) }, - /* C (MOVI_IMM_64, MOVI_48) */ - { MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64, MOVI_64) }, - /* C (MOVI_IMM_64, MOVI_64) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - EMPTY, - /* C (MOVI_IMM_64, MOVI_GOTOFF) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - - /* C (MOVI_IMM_64_PCREL, MOVI_16) */ - EMPTY, - { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_32) }, - /* C (MOVI_IMM_64_PCREL, MOVI_32) */ - { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_48) }, - /* C (MOVI_IMM_64_PCREL, MOVI_48) */ - { MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_64) }, - /* C (MOVI_IMM_64_PCREL, MOVI_64) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - /* C (MOVI_IMM_64_PCREL, MOVI_PLT) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - EMPTY, - /* C (MOVI_IMM_64_PCREL, MOVI_GOTPC) */ - { 0, 0, MOVI_64_LENGTH, 0 }, - EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, - -#endif /* HAVE_SH64 */ - -}; - -#undef EMPTY - -static struct hash_control *opcode_hash_control; /* Opcode mnemonics */ - - -#ifdef OBJ_ELF -/* Determinet whether the symbol needs any kind of PIC relocation. */ - -inline static int -sh_PIC_related_p (symbolS *sym) -{ - expressionS *exp; - - if (! sym) - return 0; - - if (sym == GOT_symbol) - return 1; - -#ifdef HAVE_SH64 - if (sh_PIC_related_p (*symbol_get_tc (sym))) - return 1; -#endif - - exp = symbol_get_value_expression (sym); - - return (exp->X_op == O_PIC_reloc - || sh_PIC_related_p (exp->X_add_symbol) - || sh_PIC_related_p (exp->X_op_symbol)); -} - -/* Determine the relocation type to be used to represent the - expression, that may be rearranged. */ - -static int -sh_check_fixup (expressionS *main_exp, bfd_reloc_code_real_type *r_type_p) -{ - expressionS *exp = main_exp; - - /* This is here for backward-compatibility only. GCC used to generated: - - f@PLT + . - (.LPCS# + 2) - - but we'd rather be able to handle this as a PIC-related reference - plus/minus a symbol. However, gas' parser gives us: - - O_subtract (O_add (f@PLT, .), .LPCS#+2) - - so we attempt to transform this into: - - O_subtract (f@PLT, O_subtract (.LPCS#+2, .)) - - which we can handle simply below. */ - if (exp->X_op == O_subtract) - { - if (sh_PIC_related_p (exp->X_op_symbol)) - return 1; - - exp = symbol_get_value_expression (exp->X_add_symbol); - - if (exp && sh_PIC_related_p (exp->X_op_symbol)) - return 1; - - if (exp && exp->X_op == O_add - && sh_PIC_related_p (exp->X_add_symbol)) - { - symbolS *sym = exp->X_add_symbol; - - exp->X_op = O_subtract; - exp->X_add_symbol = main_exp->X_op_symbol; - - main_exp->X_op_symbol = main_exp->X_add_symbol; - main_exp->X_add_symbol = sym; - - main_exp->X_add_number += exp->X_add_number; - exp->X_add_number = 0; - } - - exp = main_exp; - } - else if (exp->X_op == O_add && sh_PIC_related_p (exp->X_op_symbol)) - return 1; - - if (exp->X_op == O_symbol || exp->X_op == O_add || exp->X_op == O_subtract) - { -#ifdef HAVE_SH64 - if (exp->X_add_symbol - && (exp->X_add_symbol == GOT_symbol - || (GOT_symbol - && *symbol_get_tc (exp->X_add_symbol) == GOT_symbol))) - { - switch (*r_type_p) - { - case BFD_RELOC_SH_IMM_LOW16: - *r_type_p = BFD_RELOC_SH_GOTPC_LOW16; - break; - - case BFD_RELOC_SH_IMM_MEDLOW16: - *r_type_p = BFD_RELOC_SH_GOTPC_MEDLOW16; - break; - - case BFD_RELOC_SH_IMM_MEDHI16: - *r_type_p = BFD_RELOC_SH_GOTPC_MEDHI16; - break; - - case BFD_RELOC_SH_IMM_HI16: - *r_type_p = BFD_RELOC_SH_GOTPC_HI16; - break; - - case BFD_RELOC_NONE: - case BFD_RELOC_UNUSED: - *r_type_p = BFD_RELOC_SH_GOTPC; - break; - - default: - abort (); - } - return 0; - } -#else - if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol) - { - *r_type_p = BFD_RELOC_SH_GOTPC; - return 0; - } -#endif - exp = symbol_get_value_expression (exp->X_add_symbol); - if (! exp) - return 0; - } - - if (exp->X_op == O_PIC_reloc) - { - switch (*r_type_p) - { - case BFD_RELOC_NONE: - case BFD_RELOC_UNUSED: - *r_type_p = exp->X_md; - break; - - case BFD_RELOC_SH_DISP20: - switch (exp->X_md) - { - case BFD_RELOC_32_GOT_PCREL: - *r_type_p = BFD_RELOC_SH_GOT20; - break; - - case BFD_RELOC_32_GOTOFF: - *r_type_p = BFD_RELOC_SH_GOTOFF20; - break; - - case BFD_RELOC_SH_GOTFUNCDESC: - *r_type_p = BFD_RELOC_SH_GOTFUNCDESC20; - break; - - case BFD_RELOC_SH_GOTOFFFUNCDESC: - *r_type_p = BFD_RELOC_SH_GOTOFFFUNCDESC20; - break; - - default: - abort (); - } - break; - -#ifdef HAVE_SH64 - case BFD_RELOC_SH_IMM_LOW16: - switch (exp->X_md) - { - case BFD_RELOC_32_GOTOFF: - *r_type_p = BFD_RELOC_SH_GOTOFF_LOW16; - break; - - case BFD_RELOC_SH_GOTPLT32: - *r_type_p = BFD_RELOC_SH_GOTPLT_LOW16; - break; - - case BFD_RELOC_32_GOT_PCREL: - *r_type_p = BFD_RELOC_SH_GOT_LOW16; - break; - - case BFD_RELOC_32_PLT_PCREL: - *r_type_p = BFD_RELOC_SH_PLT_LOW16; - break; - - default: - abort (); - } - break; - - case BFD_RELOC_SH_IMM_MEDLOW16: - switch (exp->X_md) - { - case BFD_RELOC_32_GOTOFF: - *r_type_p = BFD_RELOC_SH_GOTOFF_MEDLOW16; - break; - - case BFD_RELOC_SH_GOTPLT32: - *r_type_p = BFD_RELOC_SH_GOTPLT_MEDLOW16; - break; - - case BFD_RELOC_32_GOT_PCREL: - *r_type_p = BFD_RELOC_SH_GOT_MEDLOW16; - break; - - case BFD_RELOC_32_PLT_PCREL: - *r_type_p = BFD_RELOC_SH_PLT_MEDLOW16; - break; - - default: - abort (); - } - break; - - case BFD_RELOC_SH_IMM_MEDHI16: - switch (exp->X_md) - { - case BFD_RELOC_32_GOTOFF: - *r_type_p = BFD_RELOC_SH_GOTOFF_MEDHI16; - break; - - case BFD_RELOC_SH_GOTPLT32: - *r_type_p = BFD_RELOC_SH_GOTPLT_MEDHI16; - break; - - case BFD_RELOC_32_GOT_PCREL: - *r_type_p = BFD_RELOC_SH_GOT_MEDHI16; - break; - - case BFD_RELOC_32_PLT_PCREL: - *r_type_p = BFD_RELOC_SH_PLT_MEDHI16; - break; - - default: - abort (); - } - break; - - case BFD_RELOC_SH_IMM_HI16: - switch (exp->X_md) - { - case BFD_RELOC_32_GOTOFF: - *r_type_p = BFD_RELOC_SH_GOTOFF_HI16; - break; - - case BFD_RELOC_SH_GOTPLT32: - *r_type_p = BFD_RELOC_SH_GOTPLT_HI16; - break; - - case BFD_RELOC_32_GOT_PCREL: - *r_type_p = BFD_RELOC_SH_GOT_HI16; - break; - - case BFD_RELOC_32_PLT_PCREL: - *r_type_p = BFD_RELOC_SH_PLT_HI16; - break; - - default: - abort (); - } - break; -#endif - - default: - abort (); - } - if (exp == main_exp) - exp->X_op = O_symbol; - else - { - main_exp->X_add_symbol = exp->X_add_symbol; - main_exp->X_add_number += exp->X_add_number; - } - } - else - return (sh_PIC_related_p (exp->X_add_symbol) - || sh_PIC_related_p (exp->X_op_symbol)); - - return 0; -} - -/* Add expression EXP of SIZE bytes to offset OFF of fragment FRAG. */ - -void -sh_cons_fix_new (fragS *frag, int off, int size, expressionS *exp) -{ - bfd_reloc_code_real_type r_type = BFD_RELOC_UNUSED; - - if (sh_check_fixup (exp, &r_type)) - as_bad (_("Invalid PIC expression.")); - - if (r_type == BFD_RELOC_UNUSED) - switch (size) - { - case 1: - r_type = BFD_RELOC_8; - break; - - case 2: - r_type = BFD_RELOC_16; - break; - - case 4: - r_type = BFD_RELOC_32; - break; - - case 8: - r_type = BFD_RELOC_64; - break; - - default: - goto error; - } - else if (size != 4) - { - error: - as_bad (_("unsupported BFD relocation size %u"), size); - r_type = BFD_RELOC_UNUSED; - } - - fix_new_exp (frag, off, size, exp, 0, r_type); -} - -/* The regular cons() function, that reads constants, doesn't support - suffixes such as @GOT, @GOTOFF and @PLT, that generate - machine-specific relocation types. So we must define it here. */ -/* Clobbers input_line_pointer, checks end-of-line. */ -/* NBYTES 1=.byte, 2=.word, 4=.long */ -static void -sh_elf_cons (register int nbytes) -{ - expressionS exp; - -#ifdef HAVE_SH64 - - /* Update existing range to include a previous insn, if there was one. */ - sh64_update_contents_mark (TRUE); - - /* We need to make sure the contents type is set to data. */ - sh64_flag_output (); - -#endif /* HAVE_SH64 */ - - if (is_it_end_of_statement ()) - { - demand_empty_rest_of_line (); - return; - } - -#ifdef md_cons_align - md_cons_align (nbytes); -#endif - - do - { - expression (&exp); - emit_expr (&exp, (unsigned int) nbytes); - } - while (*input_line_pointer++ == ','); - - input_line_pointer--; /* Put terminator back into stream. */ - if (*input_line_pointer == '#' || *input_line_pointer == '!') - { - while (! is_end_of_line[(unsigned char) *input_line_pointer++]); - } - else - demand_empty_rest_of_line (); -} - -/* The regular frag_offset_fixed_p doesn't work for rs_align_test - frags. */ - -static bfd_boolean -align_test_frag_offset_fixed_p (const fragS *frag1, const fragS *frag2, - bfd_vma *offset) -{ - const fragS *frag; - bfd_vma off; - - /* Start with offset initialised to difference between the two frags. - Prior to assigning frag addresses this will be zero. */ - off = frag1->fr_address - frag2->fr_address; - if (frag1 == frag2) - { - *offset = off; - return TRUE; - } - - /* Maybe frag2 is after frag1. */ - frag = frag1; - while (frag->fr_type == rs_fill - || frag->fr_type == rs_align_test) - { - if (frag->fr_type == rs_fill) - off += frag->fr_fix + frag->fr_offset * frag->fr_var; - else - off += frag->fr_fix; - frag = frag->fr_next; - if (frag == NULL) - break; - if (frag == frag2) - { - *offset = off; - return TRUE; - } - } - - /* Maybe frag1 is after frag2. */ - off = frag1->fr_address - frag2->fr_address; - frag = frag2; - while (frag->fr_type == rs_fill - || frag->fr_type == rs_align_test) - { - if (frag->fr_type == rs_fill) - off -= frag->fr_fix + frag->fr_offset * frag->fr_var; - else - off -= frag->fr_fix; - frag = frag->fr_next; - if (frag == NULL) - break; - if (frag == frag1) - { - *offset = off; - return TRUE; - } - } - - return FALSE; -} - -/* Optimize a difference of symbols which have rs_align_test frag if - possible. */ - -int -sh_optimize_expr (expressionS *l, operatorT op, expressionS *r) -{ - bfd_vma frag_off; - - if (op == O_subtract - && l->X_op == O_symbol - && r->X_op == O_symbol - && S_GET_SEGMENT (l->X_add_symbol) == S_GET_SEGMENT (r->X_add_symbol) - && (SEG_NORMAL (S_GET_SEGMENT (l->X_add_symbol)) - || r->X_add_symbol == l->X_add_symbol) - && align_test_frag_offset_fixed_p (symbol_get_frag (l->X_add_symbol), - symbol_get_frag (r->X_add_symbol), - &frag_off)) - { - offsetT symval_diff = S_GET_VALUE (l->X_add_symbol) - - S_GET_VALUE (r->X_add_symbol); - subtract_from_result (l, r->X_add_number, r->X_extrabit); - subtract_from_result (l, frag_off / OCTETS_PER_BYTE, 0); - add_to_result (l, symval_diff, symval_diff < 0); - l->X_op = O_constant; - l->X_add_symbol = 0; - return 1; - } - return 0; -} -#endif /* OBJ_ELF */ - -/* This function is called once, at assembler startup time. This should - set up all the tables, etc that the MD part of the assembler needs. */ - -void -md_begin (void) -{ - const sh_opcode_info *opcode; - char *prev_name = ""; - unsigned int target_arch; - - target_arch - = preset_target_arch ? preset_target_arch : arch_sh_up & ~arch_sh_has_dsp; - valid_arch = target_arch; - -#ifdef HAVE_SH64 - shmedia_md_begin (); -#endif - - opcode_hash_control = hash_new (); - - /* Insert unique names into hash table. */ - for (opcode = sh_table; opcode->name; opcode++) - { - if (strcmp (prev_name, opcode->name) != 0) - { - if (!SH_MERGE_ARCH_SET_VALID (opcode->arch, target_arch)) - continue; - prev_name = opcode->name; - hash_insert (opcode_hash_control, opcode->name, (char *) opcode); - } - } -} - -static int reg_m; -static int reg_n; -static int reg_x, reg_y; -static int reg_efg; -static int reg_b; - -#define IDENT_CHAR(c) (ISALNUM (c) || (c) == '_') - -/* Try to parse a reg name. Return the number of chars consumed. */ - -static unsigned int -parse_reg_without_prefix (char *src, int *mode, int *reg) -{ - char l0 = TOLOWER (src[0]); - char l1 = l0 ? TOLOWER (src[1]) : 0; - - /* We use ! IDENT_CHAR for the next character after the register name, to - make sure that we won't accidentally recognize a symbol name such as - 'sram' or sr_ram as being a reference to the register 'sr'. */ - - if (l0 == 'r') - { - if (l1 == '1') - { - if (src[2] >= '0' && src[2] <= '5' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_REG_N; - *reg = 10 + src[2] - '0'; - return 3; - } - } - if (l1 >= '0' && l1 <= '9' - && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_REG_N; - *reg = (l1 - '0'); - return 2; - } - if (l1 >= '0' && l1 <= '7' && strncasecmp (&src[2], "_bank", 5) == 0 - && ! IDENT_CHAR ((unsigned char) src[7])) - { - *mode = A_REG_B; - *reg = (l1 - '0'); - return 7; - } - - if (l1 == 'e' && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_RE; - return 2; - } - if (l1 == 's' && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_RS; - return 2; - } - } - - if (l0 == 'a') - { - if (l1 == '0') - { - if (! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = DSP_REG_N; - *reg = A_A0_NUM; - return 2; - } - if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = DSP_REG_N; - *reg = A_A0G_NUM; - return 3; - } - } - if (l1 == '1') - { - if (! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = DSP_REG_N; - *reg = A_A1_NUM; - return 2; - } - if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = DSP_REG_N; - *reg = A_A1G_NUM; - return 3; - } - } - - if (l1 == 'x' && src[2] >= '0' && src[2] <= '1' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_REG_N; - *reg = 4 + (l1 - '0'); - return 3; - } - if (l1 == 'y' && src[2] >= '0' && src[2] <= '1' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_REG_N; - *reg = 6 + (l1 - '0'); - return 3; - } - if (l1 == 's' && src[2] >= '0' && src[2] <= '3' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - int n = l1 - '0'; - - *mode = A_REG_N; - *reg = n | ((~n & 2) << 1); - return 3; - } - } - - if (l0 == 'i' && l1 && ! IDENT_CHAR ((unsigned char) src[2])) - { - if (l1 == 's') - { - *mode = A_REG_N; - *reg = 8; - return 2; - } - if (l1 == 'x') - { - *mode = A_REG_N; - *reg = 8; - return 2; - } - if (l1 == 'y') - { - *mode = A_REG_N; - *reg = 9; - return 2; - } - } - - if (l0 == 'x' && l1 >= '0' && l1 <= '1' - && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = DSP_REG_N; - *reg = A_X0_NUM + l1 - '0'; - return 2; - } - - if (l0 == 'y' && l1 >= '0' && l1 <= '1' - && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = DSP_REG_N; - *reg = A_Y0_NUM + l1 - '0'; - return 2; - } - - if (l0 == 'm' && l1 >= '0' && l1 <= '1' - && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = DSP_REG_N; - *reg = l1 == '0' ? A_M0_NUM : A_M1_NUM; - return 2; - } - - if (l0 == 's' - && l1 == 's' - && TOLOWER (src[2]) == 'r' && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_SSR; - return 3; - } - - if (l0 == 's' && l1 == 'p' && TOLOWER (src[2]) == 'c' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_SPC; - return 3; - } - - if (l0 == 's' && l1 == 'g' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_SGR; - return 3; - } - - if (l0 == 'd' && l1 == 's' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_DSR; - return 3; - } - - if (l0 == 'd' && l1 == 'b' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_DBR; - return 3; - } - - if (l0 == 's' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_SR; - return 2; - } - - if (l0 == 's' && l1 == 'p' && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_REG_N; - *reg = 15; - return 2; - } - - if (l0 == 'p' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2])) - { - *mode = A_PR; - return 2; - } - if (l0 == 'p' && l1 == 'c' && ! IDENT_CHAR ((unsigned char) src[2])) - { - /* Don't use A_DISP_PC here - that would accept stuff like 'mova pc,r0' - and use an uninitialized immediate. */ - *mode = A_PC; - return 2; - } - if (l0 == 'g' && l1 == 'b' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_GBR; - return 3; - } - if (l0 == 'v' && l1 == 'b' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_VBR; - return 3; - } - - if (l0 == 't' && l1 == 'b' && TOLOWER (src[2]) == 'r' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_TBR; - return 3; - } - if (l0 == 'm' && l1 == 'a' && TOLOWER (src[2]) == 'c' - && ! IDENT_CHAR ((unsigned char) src[4])) - { - if (TOLOWER (src[3]) == 'l') - { - *mode = A_MACL; - return 4; - } - if (TOLOWER (src[3]) == 'h') - { - *mode = A_MACH; - return 4; - } - } - if (l0 == 'm' && l1 == 'o' && TOLOWER (src[2]) == 'd' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = A_MOD; - return 3; - } - if (l0 == 'f' && l1 == 'r') - { - if (src[2] == '1') - { - if (src[3] >= '0' && src[3] <= '5' - && ! IDENT_CHAR ((unsigned char) src[4])) - { - *mode = F_REG_N; - *reg = 10 + src[3] - '0'; - return 4; - } - } - if (src[2] >= '0' && src[2] <= '9' - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = F_REG_N; - *reg = (src[2] - '0'); - return 3; - } - } - if (l0 == 'd' && l1 == 'r') - { - if (src[2] == '1') - { - if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1) - && ! IDENT_CHAR ((unsigned char) src[4])) - { - *mode = D_REG_N; - *reg = 10 + src[3] - '0'; - return 4; - } - } - if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1) - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = D_REG_N; - *reg = (src[2] - '0'); - return 3; - } - } - if (l0 == 'x' && l1 == 'd') - { - if (src[2] == '1') - { - if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1) - && ! IDENT_CHAR ((unsigned char) src[4])) - { - *mode = X_REG_N; - *reg = 11 + src[3] - '0'; - return 4; - } - } - if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1) - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = X_REG_N; - *reg = (src[2] - '0') + 1; - return 3; - } - } - if (l0 == 'f' && l1 == 'v') - { - if (src[2] == '1'&& src[3] == '2' && ! IDENT_CHAR ((unsigned char) src[4])) - { - *mode = V_REG_N; - *reg = 12; - return 4; - } - if ((src[2] == '0' || src[2] == '4' || src[2] == '8') - && ! IDENT_CHAR ((unsigned char) src[3])) - { - *mode = V_REG_N; - *reg = (src[2] - '0'); - return 3; - } - } - if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 'u' - && TOLOWER (src[3]) == 'l' - && ! IDENT_CHAR ((unsigned char) src[4])) - { - *mode = FPUL_N; - return 4; - } - - if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 's' - && TOLOWER (src[3]) == 'c' - && TOLOWER (src[4]) == 'r' && ! IDENT_CHAR ((unsigned char) src[5])) - { - *mode = FPSCR_N; - return 5; - } - - if (l0 == 'x' && l1 == 'm' && TOLOWER (src[2]) == 't' - && TOLOWER (src[3]) == 'r' - && TOLOWER (src[4]) == 'x' && ! IDENT_CHAR ((unsigned char) src[5])) - { - *mode = XMTRX_M4; - return 5; - } - - return 0; -} - -/* Like parse_reg_without_prefix, but this version supports - $-prefixed register names if enabled by the user. */ - -static unsigned int -parse_reg (char *src, int *mode, int *reg) -{ - unsigned int prefix; - unsigned int consumed; - - if (src[0] == '$') - { - if (allow_dollar_register_prefix) - { - src ++; - prefix = 1; - } - else - return 0; - } - else - prefix = 0; - - consumed = parse_reg_without_prefix (src, mode, reg); - - if (consumed == 0) - return 0; - - return consumed + prefix; -} - -static char * -parse_exp (char *s, sh_operand_info *op) -{ - char *save; - char *new_pointer; - - save = input_line_pointer; - input_line_pointer = s; - expression (&op->immediate); - if (op->immediate.X_op == O_absent) - as_bad (_("missing operand")); - new_pointer = input_line_pointer; - input_line_pointer = save; - return new_pointer; -} - -/* The many forms of operand: - - Rn Register direct - @Rn Register indirect - @Rn+ Autoincrement - @-Rn Autodecrement - @(disp:4,Rn) - @(disp:8,GBR) - @(disp:8,PC) - - @(R0,Rn) - @(R0,GBR) - - disp:8 - disp:12 - #imm8 - pr, gbr, vbr, macl, mach - */ - -static char * -parse_at (char *src, sh_operand_info *op) -{ - int len; - int mode; - src++; - if (src[0] == '@') - { - src = parse_at (src, op); - if (op->type == A_DISP_TBR) - op->type = A_DISP2_TBR; - else - as_bad (_("illegal double indirection")); - } - else if (src[0] == '-') - { - /* Must be predecrement. */ - src++; - - len = parse_reg (src, &mode, &(op->reg)); - if (mode != A_REG_N) - as_bad (_("illegal register after @-")); - - op->type = A_DEC_N; - src += len; - } - else if (src[0] == '(') - { - /* Could be @(disp, rn), @(disp, gbr), @(disp, pc), @(r0, gbr) or - @(r0, rn). */ - src++; - len = parse_reg (src, &mode, &(op->reg)); - if (len && mode == A_REG_N) - { - src += len; - if (op->reg != 0) - { - as_bad (_("must be @(r0,...)")); - } - if (src[0] == ',') - { - src++; - /* Now can be rn or gbr. */ - len = parse_reg (src, &mode, &(op->reg)); - } - else - { - len = 0; - } - if (len) - { - if (mode == A_GBR) - { - op->type = A_R0_GBR; - } - else if (mode == A_REG_N) - { - op->type = A_IND_R0_REG_N; - } - else - { - as_bad (_("syntax error in @(r0,...)")); - } - } - else - { - as_bad (_("syntax error in @(r0...)")); - } - } - else - { - /* Must be an @(disp,.. thing). */ - src = parse_exp (src, op); - if (src[0] == ',') - src++; - /* Now can be rn, gbr or pc. */ - len = parse_reg (src, &mode, &op->reg); - if (len) - { - if (mode == A_REG_N) - { - op->type = A_DISP_REG_N; - } - else if (mode == A_GBR) - { - op->type = A_DISP_GBR; - } - else if (mode == A_TBR) - { - op->type = A_DISP_TBR; - } - else if (mode == A_PC) - { - /* We want @(expr, pc) to uniformly address . + expr, - no matter if expr is a constant, or a more complex - expression, e.g. sym-. or sym1-sym2. - However, we also used to accept @(sym,pc) - as addressing sym, i.e. meaning the same as plain sym. - Some existing code does use the @(sym,pc) syntax, so - we give it the old semantics for now, but warn about - its use, so that users have some time to fix their code. - - Note that due to this backward compatibility hack, - we'll get unexpected results when @(offset, pc) is used, - and offset is a symbol that is set later to an an address - difference, or an external symbol that is set to an - address difference in another source file, so we want to - eventually remove it. */ - if (op->immediate.X_op == O_symbol) - { - op->type = A_DISP_PC; - as_warn (_("Deprecated syntax.")); - } - else - { - op->type = A_DISP_PC_ABS; - /* Such operands don't get corrected for PC==.+4, so - make the correction here. */ - op->immediate.X_add_number -= 4; - } - } - else - { - as_bad (_("syntax error in @(disp,[Rn, gbr, pc])")); - } - } - else - { - as_bad (_("syntax error in @(disp,[Rn, gbr, pc])")); - } - } - src += len; - if (src[0] != ')') - as_bad (_("expecting )")); - else - src++; - } - else - { - src += parse_reg (src, &mode, &(op->reg)); - if (mode != A_REG_N) - as_bad (_("illegal register after @")); - - if (src[0] == '+') - { - char l0, l1; - - src++; - l0 = TOLOWER (src[0]); - l1 = TOLOWER (src[1]); - - if ((l0 == 'r' && l1 == '8') - || (l0 == 'i' && (l1 == 'x' || l1 == 's'))) - { - src += 2; - op->type = AX_PMOD_N; - } - else if ( (l0 == 'r' && l1 == '9') - || (l0 == 'i' && l1 == 'y')) - { - src += 2; - op->type = AY_PMOD_N; - } - else - op->type = A_INC_N; - } - else - op->type = A_IND_N; - } - return src; -} - -static void -get_operand (char **ptr, sh_operand_info *op) -{ - char *src = *ptr; - int mode = -1; - unsigned int len; - - if (src[0] == '#') - { - src++; - *ptr = parse_exp (src, op); - op->type = A_IMM; - return; - } - - else if (src[0] == '@') - { - *ptr = parse_at (src, op); - return; - } - len = parse_reg (src, &mode, &(op->reg)); - if (len) - { - *ptr = src + len; - op->type = mode; - return; - } - else - { - /* Not a reg, the only thing left is a displacement. */ - *ptr = parse_exp (src, op); - op->type = A_DISP_PC; - return; - } -} - -static char * -get_operands (sh_opcode_info *info, char *args, sh_operand_info *operand) -{ - char *ptr = args; - if (info->arg[0]) - { - /* The pre-processor will eliminate whitespace in front of '@' - after the first argument; we may be called multiple times - from assemble_ppi, so don't insist on finding whitespace here. */ - if (*ptr == ' ') - ptr++; - - get_operand (&ptr, operand + 0); - if (info->arg[1]) - { - if (*ptr == ',') - { - ptr++; - } - get_operand (&ptr, operand + 1); - /* ??? Hack: psha/pshl have a varying operand number depending on - the type of the first operand. We handle this by having the - three-operand version first and reducing the number of operands - parsed to two if we see that the first operand is an immediate. - This works because no insn with three operands has an immediate - as first operand. */ - if (info->arg[2] && operand[0].type != A_IMM) - { - if (*ptr == ',') - { - ptr++; - } - get_operand (&ptr, operand + 2); - } - else - { - operand[2].type = 0; - } - } - else - { - operand[1].type = 0; - operand[2].type = 0; - } - } - else - { - operand[0].type = 0; - operand[1].type = 0; - operand[2].type = 0; - } - return ptr; -} - -/* Passed a pointer to a list of opcodes which use different - addressing modes, return the opcode which matches the opcodes - provided. */ - -static sh_opcode_info * -get_specific (sh_opcode_info *opcode, sh_operand_info *operands) -{ - sh_opcode_info *this_try = opcode; - char *name = opcode->name; - int n = 0; - - while (opcode->name) - { - this_try = opcode++; - if ((this_try->name != name) && (strcmp (this_try->name, name) != 0)) - { - /* We've looked so far down the table that we've run out of - opcodes with the same name. */ - return 0; - } - - /* Look at both operands needed by the opcodes and provided by - the user - since an arg test will often fail on the same arg - again and again, we'll try and test the last failing arg the - first on each opcode try. */ - for (n = 0; this_try->arg[n]; n++) - { - sh_operand_info *user = operands + n; - sh_arg_type arg = this_try->arg[n]; - - switch (arg) - { - case A_DISP_PC: - if (user->type == A_DISP_PC_ABS) - break; - /* Fall through. */ - case A_IMM: - case A_BDISP12: - case A_BDISP8: - case A_DISP_GBR: - case A_DISP2_TBR: - case A_MACH: - case A_PR: - case A_MACL: - if (user->type != arg) - goto fail; - break; - case A_R0: - /* opcode needs r0 */ - if (user->type != A_REG_N || user->reg != 0) - goto fail; - break; - case A_R0_GBR: - if (user->type != A_R0_GBR || user->reg != 0) - goto fail; - break; - case F_FR0: - if (user->type != F_REG_N || user->reg != 0) - goto fail; - break; - - case A_REG_N: - case A_INC_N: - case A_DEC_N: - case A_IND_N: - case A_IND_R0_REG_N: - case A_DISP_REG_N: - case F_REG_N: - case D_REG_N: - case X_REG_N: - case V_REG_N: - case FPUL_N: - case FPSCR_N: - case DSP_REG_N: - /* Opcode needs rn */ - if (user->type != arg) - goto fail; - reg_n = user->reg; - break; - case DX_REG_N: - if (user->type != D_REG_N && user->type != X_REG_N) - goto fail; - reg_n = user->reg; - break; - case A_GBR: - case A_TBR: - case A_SR: - case A_VBR: - case A_DSR: - case A_MOD: - case A_RE: - case A_RS: - case A_SSR: - case A_SPC: - case A_SGR: - case A_DBR: - if (user->type != arg) - goto fail; - break; - - case A_REG_B: - if (user->type != arg) - goto fail; - reg_b = user->reg; - break; - - case A_INC_R15: - if (user->type != A_INC_N) - goto fail; - if (user->reg != 15) - goto fail; - reg_n = user->reg; - break; - - case A_DEC_R15: - if (user->type != A_DEC_N) - goto fail; - if (user->reg != 15) - goto fail; - reg_n = user->reg; - break; - - case A_REG_M: - case A_INC_M: - case A_DEC_M: - case A_IND_M: - case A_IND_R0_REG_M: - case A_DISP_REG_M: - case DSP_REG_M: - /* Opcode needs rn */ - if (user->type != arg - A_REG_M + A_REG_N) - goto fail; - reg_m = user->reg; - break; - - case AS_DEC_N: - if (user->type != A_DEC_N) - goto fail; - if (user->reg < 2 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AS_INC_N: - if (user->type != A_INC_N) - goto fail; - if (user->reg < 2 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AS_IND_N: - if (user->type != A_IND_N) - goto fail; - if (user->reg < 2 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AS_PMOD_N: - if (user->type != AX_PMOD_N) - goto fail; - if (user->reg < 2 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AX_INC_N: - if (user->type != A_INC_N) - goto fail; - if (user->reg < 4 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AX_IND_N: - if (user->type != A_IND_N) - goto fail; - if (user->reg < 4 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AX_PMOD_N: - if (user->type != AX_PMOD_N) - goto fail; - if (user->reg < 4 || user->reg > 5) - goto fail; - reg_n = user->reg; - break; - - case AXY_INC_N: - if (user->type != A_INC_N) - goto fail; - if ((user->reg < 4 || user->reg > 5) - && (user->reg < 0 || user->reg > 1)) - goto fail; - reg_n = user->reg; - break; - - case AXY_IND_N: - if (user->type != A_IND_N) - goto fail; - if ((user->reg < 4 || user->reg > 5) - && (user->reg < 0 || user->reg > 1)) - goto fail; - reg_n = user->reg; - break; - - case AXY_PMOD_N: - if (user->type != AX_PMOD_N) - goto fail; - if ((user->reg < 4 || user->reg > 5) - && (user->reg < 0 || user->reg > 1)) - goto fail; - reg_n = user->reg; - break; - - case AY_INC_N: - if (user->type != A_INC_N) - goto fail; - if (user->reg < 6 || user->reg > 7) - goto fail; - reg_n = user->reg; - break; - - case AY_IND_N: - if (user->type != A_IND_N) - goto fail; - if (user->reg < 6 || user->reg > 7) - goto fail; - reg_n = user->reg; - break; - - case AY_PMOD_N: - if (user->type != AY_PMOD_N) - goto fail; - if (user->reg < 6 || user->reg > 7) - goto fail; - reg_n = user->reg; - break; - - case AYX_INC_N: - if (user->type != A_INC_N) - goto fail; - if ((user->reg < 6 || user->reg > 7) - && (user->reg < 2 || user->reg > 3)) - goto fail; - reg_n = user->reg; - break; - - case AYX_IND_N: - if (user->type != A_IND_N) - goto fail; - if ((user->reg < 6 || user->reg > 7) - && (user->reg < 2 || user->reg > 3)) - goto fail; - reg_n = user->reg; - break; - - case AYX_PMOD_N: - if (user->type != AY_PMOD_N) - goto fail; - if ((user->reg < 6 || user->reg > 7) - && (user->reg < 2 || user->reg > 3)) - goto fail; - reg_n = user->reg; - break; - - case DSP_REG_A_M: - if (user->type != DSP_REG_N) - goto fail; - if (user->reg != A_A0_NUM - && user->reg != A_A1_NUM) - goto fail; - reg_m = user->reg; - break; - - case DSP_REG_AX: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_A0_NUM: - reg_x = 0; - break; - case A_A1_NUM: - reg_x = 2; - break; - case A_X0_NUM: - reg_x = 1; - break; - case A_X1_NUM: - reg_x = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_XY: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_X0_NUM: - reg_x = 0; - break; - case A_X1_NUM: - reg_x = 2; - break; - case A_Y0_NUM: - reg_x = 1; - break; - case A_Y1_NUM: - reg_x = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_AY: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_A0_NUM: - reg_y = 0; - break; - case A_A1_NUM: - reg_y = 1; - break; - case A_Y0_NUM: - reg_y = 2; - break; - case A_Y1_NUM: - reg_y = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_YX: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_Y0_NUM: - reg_y = 0; - break; - case A_Y1_NUM: - reg_y = 1; - break; - case A_X0_NUM: - reg_y = 2; - break; - case A_X1_NUM: - reg_y = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_X: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_X0_NUM: - reg_x = 0; - break; - case A_X1_NUM: - reg_x = 1; - break; - case A_A0_NUM: - reg_x = 2; - break; - case A_A1_NUM: - reg_x = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_Y: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_Y0_NUM: - reg_y = 0; - break; - case A_Y1_NUM: - reg_y = 1; - break; - case A_M0_NUM: - reg_y = 2; - break; - case A_M1_NUM: - reg_y = 3; - break; - default: - goto fail; - } - break; - - case DSP_REG_E: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_X0_NUM: - reg_efg = 0 << 10; - break; - case A_X1_NUM: - reg_efg = 1 << 10; - break; - case A_Y0_NUM: - reg_efg = 2 << 10; - break; - case A_A1_NUM: - reg_efg = 3 << 10; - break; - default: - goto fail; - } - break; - - case DSP_REG_F: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_Y0_NUM: - reg_efg |= 0 << 8; - break; - case A_Y1_NUM: - reg_efg |= 1 << 8; - break; - case A_X0_NUM: - reg_efg |= 2 << 8; - break; - case A_A1_NUM: - reg_efg |= 3 << 8; - break; - default: - goto fail; - } - break; - - case DSP_REG_G: - if (user->type != DSP_REG_N) - goto fail; - switch (user->reg) - { - case A_M0_NUM: - reg_efg |= 0 << 2; - break; - case A_M1_NUM: - reg_efg |= 1 << 2; - break; - case A_A0_NUM: - reg_efg |= 2 << 2; - break; - case A_A1_NUM: - reg_efg |= 3 << 2; - break; - default: - goto fail; - } - break; - - case A_A0: - if (user->type != DSP_REG_N || user->reg != A_A0_NUM) - goto fail; - break; - case A_X0: - if (user->type != DSP_REG_N || user->reg != A_X0_NUM) - goto fail; - break; - case A_X1: - if (user->type != DSP_REG_N || user->reg != A_X1_NUM) - goto fail; - break; - case A_Y0: - if (user->type != DSP_REG_N || user->reg != A_Y0_NUM) - goto fail; - break; - case A_Y1: - if (user->type != DSP_REG_N || user->reg != A_Y1_NUM) - goto fail; - break; - - case F_REG_M: - case D_REG_M: - case X_REG_M: - case V_REG_M: - case FPUL_M: - case FPSCR_M: - /* Opcode needs rn */ - if (user->type != arg - F_REG_M + F_REG_N) - goto fail; - reg_m = user->reg; - break; - case DX_REG_M: - if (user->type != D_REG_N && user->type != X_REG_N) - goto fail; - reg_m = user->reg; - break; - case XMTRX_M4: - if (user->type != XMTRX_M4) - goto fail; - reg_m = 4; - break; - - default: - printf (_("unhandled %d\n"), arg); - goto fail; - } - if (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh2a_nofpu_up) - && ( arg == A_DISP_REG_M - || arg == A_DISP_REG_N)) - { - /* Check a few key IMM* fields for overflow. */ - int opf; - long val = user->immediate.X_add_number; - - for (opf = 0; opf < 4; opf ++) - switch (this_try->nibbles[opf]) - { - case IMM0_4: - case IMM1_4: - if (val < 0 || val > 15) - goto fail; - break; - case IMM0_4BY2: - case IMM1_4BY2: - if (val < 0 || val > 15 * 2) - goto fail; - break; - case IMM0_4BY4: - case IMM1_4BY4: - if (val < 0 || val > 15 * 4) - goto fail; - break; - default: - break; - } - } - } - if ( !SH_MERGE_ARCH_SET_VALID (valid_arch, this_try->arch)) - goto fail; - valid_arch = SH_MERGE_ARCH_SET (valid_arch, this_try->arch); - return this_try; - fail: - ; - } - - return 0; -} - -static void -insert (char *where, int how, int pcrel, sh_operand_info *op) -{ - fix_new_exp (frag_now, - where - frag_now->fr_literal, - 2, - &op->immediate, - pcrel, - how); -} - -static void -insert4 (char * where, int how, int pcrel, sh_operand_info * op) -{ - fix_new_exp (frag_now, - where - frag_now->fr_literal, - 4, - & op->immediate, - pcrel, - how); -} -static void -build_relax (sh_opcode_info *opcode, sh_operand_info *op) -{ - int high_byte = target_big_endian ? 0 : 1; - char *p; - - if (opcode->arg[0] == A_BDISP8) - { - int what = (opcode->nibbles[1] & 4) ? COND_JUMP_DELAY : COND_JUMP; - p = frag_var (rs_machine_dependent, - md_relax_table[C (what, COND32)].rlx_length, - md_relax_table[C (what, COND8)].rlx_length, - C (what, 0), - op->immediate.X_add_symbol, - op->immediate.X_add_number, - 0); - p[high_byte] = (opcode->nibbles[0] << 4) | (opcode->nibbles[1]); - } - else if (opcode->arg[0] == A_BDISP12) - { - p = frag_var (rs_machine_dependent, - md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length, - md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length, - C (UNCOND_JUMP, 0), - op->immediate.X_add_symbol, - op->immediate.X_add_number, - 0); - p[high_byte] = (opcode->nibbles[0] << 4); - } - -} - -/* Insert ldrs & ldre with fancy relocations that relaxation can recognize. */ - -static char * -insert_loop_bounds (char *output, sh_operand_info *operand) -{ - char *name; - symbolS *end_sym; - - /* Since the low byte of the opcode will be overwritten by the reloc, we - can just stash the high byte into both bytes and ignore endianness. */ - output[0] = 0x8c; - output[1] = 0x8c; - insert (output, BFD_RELOC_SH_LOOP_START, 1, operand); - insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1); - - if (sh_relax) - { - static int count = 0; - - /* If the last loop insn is a two-byte-insn, it is in danger of being - swapped with the insn after it. To prevent this, create a new - symbol - complete with SH_LABEL reloc - after the last loop insn. - If the last loop insn is four bytes long, the symbol will be - right in the middle, but four byte insns are not swapped anyways. */ - /* A REPEAT takes 6 bytes. The SH has a 32 bit address space. - Hence a 9 digit number should be enough to count all REPEATs. */ - name = alloca (11); - sprintf (name, "_R%x", count++ & 0x3fffffff); - end_sym = symbol_new (name, undefined_section, 0, &zero_address_frag); - /* Make this a local symbol. */ -#ifdef OBJ_COFF - SF_SET_LOCAL (end_sym); -#endif /* OBJ_COFF */ - symbol_table_insert (end_sym); - end_sym->sy_value = operand[1].immediate; - end_sym->sy_value.X_add_number += 2; - fix_new (frag_now, frag_now_fix (), 2, end_sym, 0, 1, BFD_RELOC_SH_LABEL); - } - - output = frag_more (2); - output[0] = 0x8e; - output[1] = 0x8e; - insert (output, BFD_RELOC_SH_LOOP_START, 1, operand); - insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1); - - return frag_more (2); -} - -/* Now we know what sort of opcodes it is, let's build the bytes. */ - -static unsigned int -build_Mytes (sh_opcode_info *opcode, sh_operand_info *operand) -{ - int indx; - char nbuf[8]; - char *output; - unsigned int size = 2; - int low_byte = target_big_endian ? 1 : 0; - int max_index = 4; - bfd_reloc_code_real_type r_type; -#ifdef OBJ_ELF - int unhandled_pic = 0; -#endif - - nbuf[0] = 0; - nbuf[1] = 0; - nbuf[2] = 0; - nbuf[3] = 0; - nbuf[4] = 0; - nbuf[5] = 0; - nbuf[6] = 0; - nbuf[7] = 0; - -#ifdef OBJ_ELF - for (indx = 0; indx < 3; indx++) - if (opcode->arg[indx] == A_IMM - && operand[indx].type == A_IMM - && (operand[indx].immediate.X_op == O_PIC_reloc - || sh_PIC_related_p (operand[indx].immediate.X_add_symbol) - || sh_PIC_related_p (operand[indx].immediate.X_op_symbol))) - unhandled_pic = 1; -#endif - - if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32)) - { - output = frag_more (4); - size = 4; - max_index = 8; - } - else - output = frag_more (2); - - for (indx = 0; indx < max_index; indx++) - { - sh_nibble_type i = opcode->nibbles[indx]; - if (i < 16) - { - nbuf[indx] = i; - } - else - { - switch (i) - { - case REG_N: - case REG_N_D: - nbuf[indx] = reg_n; - break; - case REG_M: - nbuf[indx] = reg_m; - break; - case SDT_REG_N: - if (reg_n < 2 || reg_n > 5) - as_bad (_("Invalid register: 'r%d'"), reg_n); - nbuf[indx] = (reg_n & 3) | 4; - break; - case REG_NM: - nbuf[indx] = reg_n | (reg_m >> 2); - break; - case REG_B: - nbuf[indx] = reg_b | 0x08; - break; - case REG_N_B01: - nbuf[indx] = reg_n | 0x01; - break; - case IMM0_3s: - nbuf[indx] |= 0x08; - case IMM0_3c: - insert (output + low_byte, BFD_RELOC_SH_IMM3, 0, operand); - break; - case IMM0_3Us: - nbuf[indx] |= 0x80; - case IMM0_3Uc: - insert (output + low_byte, BFD_RELOC_SH_IMM3U, 0, operand); - break; - case DISP0_12: - insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand); - break; - case DISP0_12BY2: - insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand); - break; - case DISP0_12BY4: - insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand); - break; - case DISP0_12BY8: - insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand); - break; - case DISP1_12: - insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand+1); - break; - case DISP1_12BY2: - insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand+1); - break; - case DISP1_12BY4: - insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand+1); - break; - case DISP1_12BY8: - insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand+1); - break; - case IMM0_20_4: - break; - case IMM0_20: - r_type = BFD_RELOC_SH_DISP20; -#ifdef OBJ_ELF - if (sh_check_fixup (&operand->immediate, &r_type)) - as_bad (_("Invalid PIC expression.")); - unhandled_pic = 0; -#endif - insert4 (output, r_type, 0, operand); - break; - case IMM0_20BY8: - insert4 (output, BFD_RELOC_SH_DISP20BY8, 0, operand); - break; - case IMM0_4BY4: - insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand); - break; - case IMM0_4BY2: - insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand); - break; - case IMM0_4: - insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand); - break; - case IMM1_4BY4: - insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand + 1); - break; - case IMM1_4BY2: - insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand + 1); - break; - case IMM1_4: - insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand + 1); - break; - case IMM0_8BY4: - insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand); - break; - case IMM0_8BY2: - insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand); - break; - case IMM0_8: - insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand); - break; - case IMM1_8BY4: - insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand + 1); - break; - case IMM1_8BY2: - insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand + 1); - break; - case IMM1_8: - insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand + 1); - break; - case PCRELIMM_8BY4: - insert (output, BFD_RELOC_SH_PCRELIMM8BY4, - operand->type != A_DISP_PC_ABS, operand); - break; - case PCRELIMM_8BY2: - insert (output, BFD_RELOC_SH_PCRELIMM8BY2, - operand->type != A_DISP_PC_ABS, operand); - break; - case REPEAT: - output = insert_loop_bounds (output, operand); - nbuf[indx] = opcode->nibbles[3]; - operand += 2; - break; - default: - printf (_("failed for %d\n"), i); - } - } - } -#ifdef OBJ_ELF - if (unhandled_pic) - as_bad (_("misplaced PIC operand")); -#endif - if (!target_big_endian) - { - output[1] = (nbuf[0] << 4) | (nbuf[1]); - output[0] = (nbuf[2] << 4) | (nbuf[3]); - } - else - { - output[0] = (nbuf[0] << 4) | (nbuf[1]); - output[1] = (nbuf[2] << 4) | (nbuf[3]); - } - if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32)) - { - if (!target_big_endian) - { - output[3] = (nbuf[4] << 4) | (nbuf[5]); - output[2] = (nbuf[6] << 4) | (nbuf[7]); - } - else - { - output[2] = (nbuf[4] << 4) | (nbuf[5]); - output[3] = (nbuf[6] << 4) | (nbuf[7]); - } - } - return size; -} - -/* Find an opcode at the start of *STR_P in the hash table, and set - *STR_P to the first character after the last one read. */ - -static sh_opcode_info * -find_cooked_opcode (char **str_p) -{ - char *str = *str_p; - unsigned char *op_start; - unsigned char *op_end; - char name[20]; - unsigned int nlen = 0; - - /* Drop leading whitespace. */ - while (*str == ' ') - str++; - - /* Find the op code end. - The pre-processor will eliminate whitespace in front of - any '@' after the first argument; we may be called from - assemble_ppi, so the opcode might be terminated by an '@'. */ - for (op_start = op_end = (unsigned char *) str; - *op_end - && nlen < sizeof (name) - 1 - && !is_end_of_line[*op_end] && *op_end != ' ' && *op_end != '@'; - op_end++) - { - unsigned char c = op_start[nlen]; - - /* The machine independent code will convert CMP/EQ into cmp/EQ - because it thinks the '/' is the end of the symbol. Moreover, - all but the first sub-insn is a parallel processing insn won't - be capitalized. Instead of hacking up the machine independent - code, we just deal with it here. */ - c = TOLOWER (c); - name[nlen] = c; - nlen++; - } - - name[nlen] = 0; - *str_p = (char *) op_end; - - if (nlen == 0) - as_bad (_("can't find opcode ")); - - return (sh_opcode_info *) hash_find (opcode_hash_control, name); -} - -/* Assemble a parallel processing insn. */ -#define DDT_BASE 0xf000 /* Base value for double data transfer insns */ - -static unsigned int -assemble_ppi (char *op_end, sh_opcode_info *opcode) -{ - int movx = 0; - int movy = 0; - int cond = 0; - int field_b = 0; - char *output; - int move_code; - unsigned int size; - - for (;;) - { - sh_operand_info operand[3]; - - /* Some insn ignore one or more register fields, e.g. psts machl,a0. - Make sure we encode a defined insn pattern. */ - reg_x = 0; - reg_y = 0; - reg_n = 0; - - if (opcode->arg[0] != A_END) - op_end = get_operands (opcode, op_end, operand); - try_another_opcode: - opcode = get_specific (opcode, operand); - if (opcode == 0) - { - /* Couldn't find an opcode which matched the operands. */ - char *where = frag_more (2); - size = 2; - - where[0] = 0x0; - where[1] = 0x0; - as_bad (_("invalid operands for opcode")); - return size; - } - - if (opcode->nibbles[0] != PPI) - as_bad (_("insn can't be combined with parallel processing insn")); - - switch (opcode->nibbles[1]) - { - - case NOPX: - if (movx) - as_bad (_("multiple movx specifications")); - movx = DDT_BASE; - break; - case NOPY: - if (movy) - as_bad (_("multiple movy specifications")); - movy = DDT_BASE; - break; - - case MOVX_NOPY: - if (movx) - as_bad (_("multiple movx specifications")); - if ((reg_n < 4 || reg_n > 5) - && (reg_n < 0 || reg_n > 1)) - as_bad (_("invalid movx address register")); - if (movy && movy != DDT_BASE) - as_bad (_("insn cannot be combined with non-nopy")); - movx = ((((reg_n & 1) != 0) << 9) - + (((reg_n & 4) == 0) << 8) - + (reg_x << 6) - + (opcode->nibbles[2] << 4) - + opcode->nibbles[3] - + DDT_BASE); - break; - - case MOVY_NOPX: - if (movy) - as_bad (_("multiple movy specifications")); - if ((reg_n < 6 || reg_n > 7) - && (reg_n < 2 || reg_n > 3)) - as_bad (_("invalid movy address register")); - if (movx && movx != DDT_BASE) - as_bad (_("insn cannot be combined with non-nopx")); - movy = ((((reg_n & 1) != 0) << 8) - + (((reg_n & 4) == 0) << 9) - + (reg_y << 6) - + (opcode->nibbles[2] << 4) - + opcode->nibbles[3] - + DDT_BASE); - break; - - case MOVX: - if (movx) - as_bad (_("multiple movx specifications")); - if (movy & 0x2ac) - as_bad (_("previous movy requires nopx")); - if (reg_n < 4 || reg_n > 5) - as_bad (_("invalid movx address register")); - if (opcode->nibbles[2] & 8) - { - if (reg_m == A_A1_NUM) - movx = 1 << 7; - else if (reg_m != A_A0_NUM) - as_bad (_("invalid movx dsp register")); - } - else - { - if (reg_x > 1) - as_bad (_("invalid movx dsp register")); - movx = reg_x << 7; - } - movx += ((reg_n - 4) << 9) + (opcode->nibbles[2] << 2) + DDT_BASE; - break; - - case MOVY: - if (movy) - as_bad (_("multiple movy specifications")); - if (movx & 0x153) - as_bad (_("previous movx requires nopy")); - if (opcode->nibbles[2] & 8) - { - /* Bit 3 in nibbles[2] is intended for bit 4 of the opcode, - so add 8 more. */ - movy = 8; - if (reg_m == A_A1_NUM) - movy += 1 << 6; - else if (reg_m != A_A0_NUM) - as_bad (_("invalid movy dsp register")); - } - else - { - if (reg_y > 1) - as_bad (_("invalid movy dsp register")); - movy = reg_y << 6; - } - if (reg_n < 6 || reg_n > 7) - as_bad (_("invalid movy address register")); - movy += ((reg_n - 6) << 8) + opcode->nibbles[2] + DDT_BASE; - break; - - case PSH: - if (operand[0].immediate.X_op != O_constant) - as_bad (_("dsp immediate shift value not constant")); - field_b = ((opcode->nibbles[2] << 12) - | (operand[0].immediate.X_add_number & 127) << 4 - | reg_n); - break; - case PPI3NC: - if (cond) - { - opcode++; - goto try_another_opcode; - } - /* Fall through. */ - case PPI3: - if (field_b) - as_bad (_("multiple parallel processing specifications")); - field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8) - + (reg_x << 6) + (reg_y << 4) + reg_n); - switch (opcode->nibbles[4]) - { - case HEX_0: - case HEX_XX00: - case HEX_00YY: - break; - case HEX_1: - case HEX_4: - field_b += opcode->nibbles[4] << 4; - break; - default: - abort (); - } - break; - case PDC: - if (cond) - as_bad (_("multiple condition specifications")); - cond = opcode->nibbles[2] << 8; - if (*op_end) - goto skip_cond_check; - break; - case PPIC: - if (field_b) - as_bad (_("multiple parallel processing specifications")); - field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8) - + cond + (reg_x << 6) + (reg_y << 4) + reg_n); - cond = 0; - switch (opcode->nibbles[4]) - { - case HEX_0: - case HEX_XX00: - case HEX_00YY: - break; - case HEX_1: - case HEX_4: - field_b += opcode->nibbles[4] << 4; - break; - default: - abort (); - } - break; - case PMUL: - if (field_b) - { - if ((field_b & 0xef00) == 0xa100) - field_b -= 0x8100; - /* pclr Dz pmuls Se,Sf,Dg */ - else if ((field_b & 0xff00) == 0x8d00 - && (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh4al_dsp_up))) - { - valid_arch = SH_MERGE_ARCH_SET (valid_arch, arch_sh4al_dsp_up); - field_b -= 0x8cf0; - } - else - as_bad (_("insn cannot be combined with pmuls")); - switch (field_b & 0xf) - { - case A_X0_NUM: - field_b += 0 - A_X0_NUM; - break; - case A_Y0_NUM: - field_b += 1 - A_Y0_NUM; - break; - case A_A0_NUM: - field_b += 2 - A_A0_NUM; - break; - case A_A1_NUM: - field_b += 3 - A_A1_NUM; - break; - default: - as_bad (_("bad combined pmuls output operand")); - } - /* Generate warning if the destination register for padd / psub - and pmuls is the same ( only for A0 or A1 ). - If the last nibble is 1010 then A0 is used in both - padd / psub and pmuls. If it is 1111 then A1 is used - as destination register in both padd / psub and pmuls. */ - - if ((((field_b | reg_efg) & 0x000F) == 0x000A) - || (((field_b | reg_efg) & 0x000F) == 0x000F)) - as_warn (_("destination register is same for parallel insns")); - } - field_b += 0x4000 + reg_efg; - break; - default: - abort (); - } - if (cond) - { - as_bad (_("condition not followed by conditionalizable insn")); - cond = 0; - } - if (! *op_end) - break; - skip_cond_check: - opcode = find_cooked_opcode (&op_end); - if (opcode == NULL) - { - (as_bad - (_("unrecognized characters at end of parallel processing insn"))); - break; - } - } - - move_code = movx | movy; - if (field_b) - { - /* Parallel processing insn. */ - unsigned long ppi_code = (movx | movy | 0xf800) << 16 | field_b; - - output = frag_more (4); - size = 4; - if (! target_big_endian) - { - output[3] = ppi_code >> 8; - output[2] = ppi_code; - } - else - { - output[2] = ppi_code >> 8; - output[3] = ppi_code; - } - move_code |= 0xf800; - } - else - { - /* Just a double data transfer. */ - output = frag_more (2); - size = 2; - } - if (! target_big_endian) - { - output[1] = move_code >> 8; - output[0] = move_code; - } - else - { - output[0] = move_code >> 8; - output[1] = move_code; - } - return size; -} - -/* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This function is supposed to emit - the frags/bytes it assembles to. */ - -void -md_assemble (char *str) -{ - char *op_end; - sh_operand_info operand[3]; - sh_opcode_info *opcode; - unsigned int size = 0; - char *initial_str = str; - -#ifdef HAVE_SH64 - if (sh64_isa_mode == sh64_isa_shmedia) - { - shmedia_md_assemble (str); - return; - } - else - { - /* If we've seen pseudo-directives, make sure any emitted data or - frags are marked as data. */ - if (!seen_insn) - { - sh64_update_contents_mark (TRUE); - sh64_set_contents_type (CRT_SH5_ISA16); - } - - seen_insn = TRUE; - } -#endif /* HAVE_SH64 */ - - opcode = find_cooked_opcode (&str); - op_end = str; - - if (opcode == NULL) - { - /* The opcode is not in the hash table. - This means we definitely have an assembly failure, - but the instruction may be valid in another CPU variant. - In this case emit something better than 'unknown opcode'. - Search the full table in sh-opc.h to check. */ - - char *name = initial_str; - int name_length = 0; - const sh_opcode_info *op; - int found = 0; - - /* identify opcode in string */ - while (ISSPACE (*name)) - { - name++; - } - while (!ISSPACE (name[name_length])) - { - name_length++; - } - - /* search for opcode in full list */ - for (op = sh_table; op->name; op++) - { - if (strncasecmp (op->name, name, name_length) == 0 - && op->name[name_length] == '\0') - { - found = 1; - break; - } - } - - if ( found ) - { - as_bad (_("opcode not valid for this cpu variant")); - } - else - { - as_bad (_("unknown opcode")); - } - return; - } - - if (sh_relax - && ! seg_info (now_seg)->tc_segment_info_data.in_code) - { - /* Output a CODE reloc to tell the linker that the following - bytes are instructions, not data. */ - fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, - BFD_RELOC_SH_CODE); - seg_info (now_seg)->tc_segment_info_data.in_code = 1; - } - - if (opcode->nibbles[0] == PPI) - { - size = assemble_ppi (op_end, opcode); - } - else - { - if (opcode->arg[0] == A_BDISP12 - || opcode->arg[0] == A_BDISP8) - { - /* Since we skip get_specific here, we have to check & update - valid_arch now. */ - if (SH_MERGE_ARCH_SET_VALID (valid_arch, opcode->arch)) - valid_arch = SH_MERGE_ARCH_SET (valid_arch, opcode->arch); - else - as_bad (_("Delayed branches not available on SH1")); - parse_exp (op_end + 1, &operand[0]); - build_relax (opcode, &operand[0]); - - /* All branches are currently 16 bit. */ - size = 2; - } - else - { - if (opcode->arg[0] == A_END) - { - /* Ignore trailing whitespace. If there is any, it has already - been compressed to a single space. */ - if (*op_end == ' ') - op_end++; - } - else - { - op_end = get_operands (opcode, op_end, operand); - } - opcode = get_specific (opcode, operand); - - if (opcode == 0) - { - /* Couldn't find an opcode which matched the operands. */ - char *where = frag_more (2); - size = 2; - - where[0] = 0x0; - where[1] = 0x0; - as_bad (_("invalid operands for opcode")); - } - else - { - if (*op_end) - as_bad (_("excess operands: '%s'"), op_end); - - size = build_Mytes (opcode, operand); - } - } - } - - dwarf2_emit_insn (size); -} - -/* This routine is called each time a label definition is seen. It - emits a BFD_RELOC_SH_LABEL reloc if necessary. */ - -void -sh_frob_label (symbolS *sym) -{ - static fragS *last_label_frag; - static int last_label_offset; - - if (sh_relax - && seg_info (now_seg)->tc_segment_info_data.in_code) - { - int offset; - - offset = frag_now_fix (); - if (frag_now != last_label_frag - || offset != last_label_offset) - { - fix_new (frag_now, offset, 2, &abs_symbol, 0, 0, BFD_RELOC_SH_LABEL); - last_label_frag = frag_now; - last_label_offset = offset; - } - } - - dwarf2_emit_label (sym); -} - -/* This routine is called when the assembler is about to output some - data. It emits a BFD_RELOC_SH_DATA reloc if necessary. */ - -void -sh_flush_pending_output (void) -{ - if (sh_relax - && seg_info (now_seg)->tc_segment_info_data.in_code) - { - fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0, - BFD_RELOC_SH_DATA); - seg_info (now_seg)->tc_segment_info_data.in_code = 0; - } -} - -symbolS * -md_undefined_symbol (char *name ATTRIBUTE_UNUSED) -{ - return 0; -} - -/* Various routines to kill one day. */ - -char * -md_atof (int type, char *litP, int *sizeP) -{ - return ieee_md_atof (type, litP, sizeP, target_big_endian); -} - -/* Handle the .uses pseudo-op. This pseudo-op is used just before a - call instruction. It refers to a label of the instruction which - loads the register which the call uses. We use it to generate a - special reloc for the linker. */ - -static void -s_uses (int ignore ATTRIBUTE_UNUSED) -{ - expressionS ex; - - if (! sh_relax) - as_warn (_(".uses pseudo-op seen when not relaxing")); - - expression (&ex); - - if (ex.X_op != O_symbol || ex.X_add_number != 0) - { - as_bad (_("bad .uses format")); - ignore_rest_of_line (); - return; - } - - fix_new_exp (frag_now, frag_now_fix (), 2, &ex, 1, BFD_RELOC_SH_USES); - - demand_empty_rest_of_line (); -} - -enum options -{ - OPTION_RELAX = OPTION_MD_BASE, - OPTION_BIG, - OPTION_LITTLE, - OPTION_SMALL, - OPTION_DSP, - OPTION_ISA, - OPTION_RENESAS, - OPTION_ALLOW_REG_PREFIX, -#ifdef HAVE_SH64 - OPTION_ABI, - OPTION_NO_MIX, - OPTION_SHCOMPACT_CONST_CRANGE, - OPTION_NO_EXPAND, - OPTION_PT32, -#endif - OPTION_H_TICK_HEX, -#ifdef OBJ_ELF - OPTION_FDPIC, -#endif - OPTION_DUMMY /* Not used. This is just here to make it easy to add and subtract options from this enum. */ -}; - -const char *md_shortopts = ""; -struct option md_longopts[] = -{ - {"relax", no_argument, NULL, OPTION_RELAX}, - {"big", no_argument, NULL, OPTION_BIG}, - {"little", no_argument, NULL, OPTION_LITTLE}, - /* The next two switches are here because the - generic parts of the linker testsuite uses them. */ - {"EB", no_argument, NULL, OPTION_BIG}, - {"EL", no_argument, NULL, OPTION_LITTLE}, - {"small", no_argument, NULL, OPTION_SMALL}, - {"dsp", no_argument, NULL, OPTION_DSP}, - {"isa", required_argument, NULL, OPTION_ISA}, - {"renesas", no_argument, NULL, OPTION_RENESAS}, - {"allow-reg-prefix", no_argument, NULL, OPTION_ALLOW_REG_PREFIX}, - -#ifdef HAVE_SH64 - {"abi", required_argument, NULL, OPTION_ABI}, - {"no-mix", no_argument, NULL, OPTION_NO_MIX}, - {"shcompact-const-crange", no_argument, NULL, OPTION_SHCOMPACT_CONST_CRANGE}, - {"no-expand", no_argument, NULL, OPTION_NO_EXPAND}, - {"expand-pt32", no_argument, NULL, OPTION_PT32}, -#endif /* HAVE_SH64 */ - { "h-tick-hex", no_argument, NULL, OPTION_H_TICK_HEX }, - -#ifdef OBJ_ELF - {"fdpic", no_argument, NULL, OPTION_FDPIC}, -#endif - - {NULL, no_argument, NULL, 0} -}; -size_t md_longopts_size = sizeof (md_longopts); - -int -md_parse_option (int c, char *arg ATTRIBUTE_UNUSED) -{ - switch (c) - { - case OPTION_RELAX: - sh_relax = 1; - break; - - case OPTION_BIG: - target_big_endian = 1; - break; - - case OPTION_LITTLE: - target_big_endian = 0; - break; - - case OPTION_SMALL: - sh_small = 1; - break; - - case OPTION_DSP: - preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu); - break; - - case OPTION_RENESAS: - dont_adjust_reloc_32 = 1; - break; - - case OPTION_ALLOW_REG_PREFIX: - allow_dollar_register_prefix = 1; - break; - - case OPTION_ISA: - if (strcasecmp (arg, "dsp") == 0) - preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu); - else if (strcasecmp (arg, "fp") == 0) - preset_target_arch = arch_sh_up & ~arch_sh_has_dsp; - else if (strcasecmp (arg, "any") == 0) - preset_target_arch = arch_sh_up; -#ifdef HAVE_SH64 - else if (strcasecmp (arg, "shmedia") == 0) - { - if (sh64_isa_mode == sh64_isa_shcompact) - as_bad (_("Invalid combination: --isa=SHcompact with --isa=SHmedia")); - sh64_isa_mode = sh64_isa_shmedia; - } - else if (strcasecmp (arg, "shcompact") == 0) - { - if (sh64_isa_mode == sh64_isa_shmedia) - as_bad (_("Invalid combination: --isa=SHmedia with --isa=SHcompact")); - if (sh64_abi == sh64_abi_64) - as_bad (_("Invalid combination: --abi=64 with --isa=SHcompact")); - sh64_isa_mode = sh64_isa_shcompact; - } -#endif /* HAVE_SH64 */ - else - { - extern const bfd_arch_info_type bfd_sh_arch; - bfd_arch_info_type const *bfd_arch = &bfd_sh_arch; - - preset_target_arch = 0; - for (; bfd_arch; bfd_arch=bfd_arch->next) - { - int len = strlen(bfd_arch->printable_name); - - if (bfd_arch->mach == bfd_mach_sh5) - continue; - - if (strncasecmp (bfd_arch->printable_name, arg, len) != 0) - continue; - - if (arg[len] == '\0') - preset_target_arch = - sh_get_arch_from_bfd_mach (bfd_arch->mach); - else if (strcasecmp(&arg[len], "-up") == 0) - preset_target_arch = - sh_get_arch_up_from_bfd_mach (bfd_arch->mach); - else - continue; - break; - } - - if (!preset_target_arch) - as_bad (_("Invalid argument to --isa option: %s"), arg); - } - break; - -#ifdef HAVE_SH64 - case OPTION_ABI: - if (strcmp (arg, "32") == 0) - { - if (sh64_abi == sh64_abi_64) - as_bad (_("Invalid combination: --abi=32 with --abi=64")); - sh64_abi = sh64_abi_32; - } - else if (strcmp (arg, "64") == 0) - { - if (sh64_abi == sh64_abi_32) - as_bad (_("Invalid combination: --abi=64 with --abi=32")); - if (sh64_isa_mode == sh64_isa_shcompact) - as_bad (_("Invalid combination: --isa=SHcompact with --abi=64")); - sh64_abi = sh64_abi_64; - } - else - as_bad (_("Invalid argument to --abi option: %s"), arg); - break; - - case OPTION_NO_MIX: - sh64_mix = FALSE; - break; - - case OPTION_SHCOMPACT_CONST_CRANGE: - sh64_shcompact_const_crange = TRUE; - break; - - case OPTION_NO_EXPAND: - sh64_expand = FALSE; - break; - - case OPTION_PT32: - sh64_pt32 = TRUE; - break; -#endif /* HAVE_SH64 */ - - case OPTION_H_TICK_HEX: - enable_h_tick_hex = 1; - break; - -#ifdef OBJ_ELF - case OPTION_FDPIC: - sh_fdpic = TRUE; - break; -#endif /* OBJ_ELF */ - - default: - return 0; - } - - return 1; -} - -void -md_show_usage (FILE *stream) -{ - fprintf (stream, _("\ -SH options:\n\ ---little generate little endian code\n\ ---big generate big endian code\n\ ---relax alter jump instructions for long displacements\n\ ---renesas disable optimization with section symbol for\n\ - compatibility with Renesas assembler.\n\ ---small align sections to 4 byte boundaries, not 16\n\ ---dsp enable sh-dsp insns, and disable floating-point ISAs.\n\ ---allow-reg-prefix allow '$' as a register name prefix.\n\ ---isa=[any use most appropriate isa\n\ - | dsp same as '-dsp'\n\ - | fp")); - { - extern const bfd_arch_info_type bfd_sh_arch; - bfd_arch_info_type const *bfd_arch = &bfd_sh_arch; - - for (; bfd_arch; bfd_arch=bfd_arch->next) - if (bfd_arch->mach != bfd_mach_sh5) - { - fprintf (stream, "\n | %s", bfd_arch->printable_name); - fprintf (stream, "\n | %s-up", bfd_arch->printable_name); - } - } - fprintf (stream, "]\n"); -#ifdef HAVE_SH64 - fprintf (stream, _("\ ---isa=[shmedia set as the default instruction set for SH64\n\ - | SHmedia\n\ - | shcompact\n\ - | SHcompact]\n")); - fprintf (stream, _("\ ---abi=[32|64] set size of expanded SHmedia operands and object\n\ - file type\n\ ---shcompact-const-crange emit code-range descriptors for constants in\n\ - SHcompact code sections\n\ ---no-mix disallow SHmedia code in the same section as\n\ - constants and SHcompact code\n\ ---no-expand do not expand MOVI, PT, PTA or PTB instructions\n\ ---expand-pt32 with -abi=64, expand PT, PTA and PTB instructions\n\ - to 32 bits only\n")); -#endif /* HAVE_SH64 */ -#ifdef OBJ_ELF - fprintf (stream, _("\ ---fdpic generate an FDPIC object file\n")); -#endif /* OBJ_ELF */ -} - -/* This struct is used to pass arguments to sh_count_relocs through - bfd_map_over_sections. */ - -struct sh_count_relocs -{ - /* Symbol we are looking for. */ - symbolS *sym; - /* Count of relocs found. */ - int count; -}; - -/* Count the number of fixups in a section which refer to a particular - symbol. This is called via bfd_map_over_sections. */ - -static void -sh_count_relocs (bfd *abfd ATTRIBUTE_UNUSED, segT sec, void *data) -{ - struct sh_count_relocs *info = (struct sh_count_relocs *) data; - segment_info_type *seginfo; - symbolS *sym; - fixS *fix; - - seginfo = seg_info (sec); - if (seginfo == NULL) - return; - - sym = info->sym; - for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next) - { - if (fix->fx_addsy == sym) - { - ++info->count; - fix->fx_tcbit = 1; - } - } -} - -/* Handle the count relocs for a particular section. - This is called via bfd_map_over_sections. */ - -static void -sh_frob_section (bfd *abfd ATTRIBUTE_UNUSED, segT sec, - void *ignore ATTRIBUTE_UNUSED) -{ - segment_info_type *seginfo; - fixS *fix; - - seginfo = seg_info (sec); - if (seginfo == NULL) - return; - - for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next) - { - symbolS *sym; - - sym = fix->fx_addsy; - /* Check for a local_symbol. */ - if (sym && sym->bsym == NULL) - { - struct local_symbol *ls = (struct local_symbol *)sym; - /* See if it's been converted. If so, canonicalize. */ - if (local_symbol_converted_p (ls)) - fix->fx_addsy = local_symbol_get_real_symbol (ls); - } - } - - for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next) - { - symbolS *sym; - bfd_vma val; - fixS *fscan; - struct sh_count_relocs info; - - if (fix->fx_r_type != BFD_RELOC_SH_USES) - continue; - - /* The BFD_RELOC_SH_USES reloc should refer to a defined local - symbol in the same section. */ - sym = fix->fx_addsy; - if (sym == NULL - || fix->fx_subsy != NULL - || fix->fx_addnumber != 0 - || S_GET_SEGMENT (sym) != sec - || S_IS_EXTERNAL (sym)) - { - as_warn_where (fix->fx_file, fix->fx_line, - _(".uses does not refer to a local symbol in the same section")); - continue; - } - - /* Look through the fixups again, this time looking for one - at the same location as sym. */ - val = S_GET_VALUE (sym); - for (fscan = seginfo->fix_root; - fscan != NULL; - fscan = fscan->fx_next) - if (val == fscan->fx_frag->fr_address + fscan->fx_where - && fscan->fx_r_type != BFD_RELOC_SH_ALIGN - && fscan->fx_r_type != BFD_RELOC_SH_CODE - && fscan->fx_r_type != BFD_RELOC_SH_DATA - && fscan->fx_r_type != BFD_RELOC_SH_LABEL) - break; - if (fscan == NULL) - { - as_warn_where (fix->fx_file, fix->fx_line, - _("can't find fixup pointed to by .uses")); - continue; - } - - if (fscan->fx_tcbit) - { - /* We've already done this one. */ - continue; - } - - /* The variable fscan should also be a fixup to a local symbol - in the same section. */ - sym = fscan->fx_addsy; - if (sym == NULL - || fscan->fx_subsy != NULL - || fscan->fx_addnumber != 0 - || S_GET_SEGMENT (sym) != sec - || S_IS_EXTERNAL (sym)) - { - as_warn_where (fix->fx_file, fix->fx_line, - _(".uses target does not refer to a local symbol in the same section")); - continue; - } - - /* Now we look through all the fixups of all the sections, - counting the number of times we find a reference to sym. */ - info.sym = sym; - info.count = 0; - bfd_map_over_sections (stdoutput, sh_count_relocs, &info); - - if (info.count < 1) - abort (); - - /* Generate a BFD_RELOC_SH_COUNT fixup at the location of sym. - We have already adjusted the value of sym to include the - fragment address, so we undo that adjustment here. */ - subseg_change (sec, 0); - fix_new (fscan->fx_frag, - S_GET_VALUE (sym) - fscan->fx_frag->fr_address, - 4, &abs_symbol, info.count, 0, BFD_RELOC_SH_COUNT); - } -} - -/* This function is called after the symbol table has been completed, - but before the relocs or section contents have been written out. - If we have seen any .uses pseudo-ops, they point to an instruction - which loads a register with the address of a function. We look - through the fixups to find where the function address is being - loaded from. We then generate a COUNT reloc giving the number of - times that function address is referred to. The linker uses this - information when doing relaxing, to decide when it can eliminate - the stored function address entirely. */ - -void -sh_frob_file (void) -{ -#ifdef HAVE_SH64 - shmedia_frob_file_before_adjust (); -#endif - - if (! sh_relax) - return; - - bfd_map_over_sections (stdoutput, sh_frob_section, NULL); -} - -/* Called after relaxing. Set the correct sizes of the fragments, and - create relocs so that md_apply_fix will fill in the correct values. */ - -void -md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, segT seg, fragS *fragP) -{ - int donerelax = 0; - - switch (fragP->fr_subtype) - { - case C (COND_JUMP, COND8): - case C (COND_JUMP_DELAY, COND8): - subseg_change (seg, 0); - fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset, - 1, BFD_RELOC_SH_PCDISP8BY2); - fragP->fr_fix += 2; - fragP->fr_var = 0; - break; - - case C (UNCOND_JUMP, UNCOND12): - subseg_change (seg, 0); - fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset, - 1, BFD_RELOC_SH_PCDISP12BY2); - fragP->fr_fix += 2; - fragP->fr_var = 0; - break; - - case C (UNCOND_JUMP, UNCOND32): - case C (UNCOND_JUMP, UNDEF_WORD_DISP): - if (fragP->fr_symbol == NULL) - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement overflows 12-bit field")); - else if (S_IS_DEFINED (fragP->fr_symbol)) - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement to defined symbol %s overflows 12-bit field"), - S_GET_NAME (fragP->fr_symbol)); - else - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement to undefined symbol %s overflows 12-bit field"), - S_GET_NAME (fragP->fr_symbol)); - /* Stabilize this frag, so we don't trip an assert. */ - fragP->fr_fix += fragP->fr_var; - fragP->fr_var = 0; - break; - - case C (COND_JUMP, COND12): - case C (COND_JUMP_DELAY, COND12): - /* A bcond won't fit, so turn it into a b!cond; bra disp; nop. */ - /* I found that a relax failure for gcc.c-torture/execute/930628-1.c - was due to gas incorrectly relaxing an out-of-range conditional - branch with delay slot. It turned: - bf.s L6 (slot mov.l r12,@(44,r0)) - into: - -2c: 8f 01 a0 8b bf.s 32 <_main+32> (slot bra L6) -30: 00 09 nop -32: 10 cb mov.l r12,@(44,r0) - Therefore, branches with delay slots have to be handled - differently from ones without delay slots. */ - { - unsigned char *buffer = - (unsigned char *) (fragP->fr_fix + fragP->fr_literal); - int highbyte = target_big_endian ? 0 : 1; - int lowbyte = target_big_endian ? 1 : 0; - int delay = fragP->fr_subtype == C (COND_JUMP_DELAY, COND12); - - /* Toggle the true/false bit of the bcond. */ - buffer[highbyte] ^= 0x2; - - /* If this is a delayed branch, we may not put the bra in the - slot. So we change it to a non-delayed branch, like that: - b! cond slot_label; bra disp; slot_label: slot_insn - ??? We should try if swapping the conditional branch and - its delay-slot insn already makes the branch reach. */ - - /* Build a relocation to six / four bytes farther on. */ - subseg_change (seg, 0); - fix_new (fragP, fragP->fr_fix, 2, section_symbol (seg), - fragP->fr_address + fragP->fr_fix + (delay ? 4 : 6), - 1, BFD_RELOC_SH_PCDISP8BY2); - - /* Set up a jump instruction. */ - buffer[highbyte + 2] = 0xa0; - buffer[lowbyte + 2] = 0; - fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol, - fragP->fr_offset, 1, BFD_RELOC_SH_PCDISP12BY2); - - if (delay) - { - buffer[highbyte] &= ~0x4; /* Removes delay slot from branch. */ - fragP->fr_fix += 4; - } - else - { - /* Fill in a NOP instruction. */ - buffer[highbyte + 4] = 0x0; - buffer[lowbyte + 4] = 0x9; - - fragP->fr_fix += 6; - } - fragP->fr_var = 0; - donerelax = 1; - } - break; - - case C (COND_JUMP, COND32): - case C (COND_JUMP_DELAY, COND32): - case C (COND_JUMP, UNDEF_WORD_DISP): - case C (COND_JUMP_DELAY, UNDEF_WORD_DISP): - if (fragP->fr_symbol == NULL) - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement overflows 8-bit field")); - else if (S_IS_DEFINED (fragP->fr_symbol)) - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement to defined symbol %s overflows 8-bit field"), - S_GET_NAME (fragP->fr_symbol)); - else - as_bad_where (fragP->fr_file, fragP->fr_line, - _("displacement to undefined symbol %s overflows 8-bit field "), - S_GET_NAME (fragP->fr_symbol)); - /* Stabilize this frag, so we don't trip an assert. */ - fragP->fr_fix += fragP->fr_var; - fragP->fr_var = 0; - break; - - default: -#ifdef HAVE_SH64 - shmedia_md_convert_frag (headers, seg, fragP, TRUE); -#else - abort (); -#endif - } - - if (donerelax && !sh_relax) - as_warn_where (fragP->fr_file, fragP->fr_line, - _("overflow in branch to %s; converted into longer instruction sequence"), - (fragP->fr_symbol != NULL - ? S_GET_NAME (fragP->fr_symbol) - : "")); -} - -valueT -md_section_align (segT seg ATTRIBUTE_UNUSED, valueT size) -{ -#ifdef OBJ_ELF - return size; -#else /* ! OBJ_ELF */ - return ((size + (1 << bfd_get_section_alignment (stdoutput, seg)) - 1) - & (-1 << bfd_get_section_alignment (stdoutput, seg))); -#endif /* ! OBJ_ELF */ -} - -/* This static variable is set by s_uacons to tell sh_cons_align that - the expression does not need to be aligned. */ - -static int sh_no_align_cons = 0; - -/* This handles the unaligned space allocation pseudo-ops, such as - .uaword. .uaword is just like .word, but the value does not need - to be aligned. */ - -static void -s_uacons (int bytes) -{ - /* Tell sh_cons_align not to align this value. */ - sh_no_align_cons = 1; - cons (bytes); -} - -/* If a .word, et. al., pseud-op is seen, warn if the value is not - aligned correctly. Note that this can cause warnings to be issued - when assembling initialized structured which were declared with the - packed attribute. FIXME: Perhaps we should require an option to - enable this warning? */ - -void -sh_cons_align (int nbytes) -{ - int nalign; - - if (sh_no_align_cons) - { - /* This is an unaligned pseudo-op. */ - sh_no_align_cons = 0; - return; - } - - nalign = 0; - while ((nbytes & 1) == 0) - { - ++nalign; - nbytes >>= 1; - } - - if (nalign == 0) - return; - - if (now_seg == absolute_section) - { - if ((abs_section_offset & ((1 << nalign) - 1)) != 0) - as_warn (_("misaligned data")); - return; - } - - frag_var (rs_align_test, 1, 1, (relax_substateT) 0, - (symbolS *) NULL, (offsetT) nalign, (char *) NULL); - - record_alignment (now_seg, nalign); -} - -/* When relaxing, we need to output a reloc for any .align directive - that requests alignment to a four byte boundary or larger. This is - also where we check for misaligned data. */ - -void -sh_handle_align (fragS *frag) -{ - int bytes = frag->fr_next->fr_address - frag->fr_address - frag->fr_fix; - - if (frag->fr_type == rs_align_code) - { - static const unsigned char big_nop_pattern[] = { 0x00, 0x09 }; - static const unsigned char little_nop_pattern[] = { 0x09, 0x00 }; - - char *p = frag->fr_literal + frag->fr_fix; - - if (bytes & 1) - { - *p++ = 0; - bytes--; - frag->fr_fix += 1; - } - - if (target_big_endian) - { - memcpy (p, big_nop_pattern, sizeof big_nop_pattern); - frag->fr_var = sizeof big_nop_pattern; - } - else - { - memcpy (p, little_nop_pattern, sizeof little_nop_pattern); - frag->fr_var = sizeof little_nop_pattern; - } - } - else if (frag->fr_type == rs_align_test) - { - if (bytes != 0) - as_bad_where (frag->fr_file, frag->fr_line, _("misaligned data")); - } - - if (sh_relax - && (frag->fr_type == rs_align - || frag->fr_type == rs_align_code) - && frag->fr_address + frag->fr_fix > 0 - && frag->fr_offset > 1 - && now_seg != bss_section) - fix_new (frag, frag->fr_fix, 2, &abs_symbol, frag->fr_offset, 0, - BFD_RELOC_SH_ALIGN); -} - -/* See whether the relocation should be resolved locally. */ - -static bfd_boolean -sh_local_pcrel (fixS *fix) -{ - return (! sh_relax - && (fix->fx_r_type == BFD_RELOC_SH_PCDISP8BY2 - || fix->fx_r_type == BFD_RELOC_SH_PCDISP12BY2 - || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY2 - || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY4 - || fix->fx_r_type == BFD_RELOC_8_PCREL - || fix->fx_r_type == BFD_RELOC_SH_SWITCH16 - || fix->fx_r_type == BFD_RELOC_SH_SWITCH32)); -} - -/* See whether we need to force a relocation into the output file. - This is used to force out switch and PC relative relocations when - relaxing. */ - -int -sh_force_relocation (fixS *fix) -{ - /* These relocations can't make it into a DSO, so no use forcing - them for global symbols. */ - if (sh_local_pcrel (fix)) - return 0; - - /* Make sure some relocations get emitted. */ - if (fix->fx_r_type == BFD_RELOC_SH_LOOP_START - || fix->fx_r_type == BFD_RELOC_SH_LOOP_END - || fix->fx_r_type == BFD_RELOC_SH_TLS_GD_32 - || fix->fx_r_type == BFD_RELOC_SH_TLS_LD_32 - || fix->fx_r_type == BFD_RELOC_SH_TLS_IE_32 - || fix->fx_r_type == BFD_RELOC_SH_TLS_LDO_32 - || fix->fx_r_type == BFD_RELOC_SH_TLS_LE_32 - || generic_force_reloc (fix)) - return 1; - - if (! sh_relax) - return 0; - - return (fix->fx_pcrel - || SWITCH_TABLE (fix) - || fix->fx_r_type == BFD_RELOC_SH_COUNT - || fix->fx_r_type == BFD_RELOC_SH_ALIGN - || fix->fx_r_type == BFD_RELOC_SH_CODE - || fix->fx_r_type == BFD_RELOC_SH_DATA -#ifdef HAVE_SH64 - || fix->fx_r_type == BFD_RELOC_SH_SHMEDIA_CODE -#endif - || fix->fx_r_type == BFD_RELOC_SH_LABEL); -} - -#ifdef OBJ_ELF -bfd_boolean -sh_fix_adjustable (fixS *fixP) -{ - if (fixP->fx_r_type == BFD_RELOC_32_PLT_PCREL - || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL - || fixP->fx_r_type == BFD_RELOC_SH_GOT20 - || fixP->fx_r_type == BFD_RELOC_SH_GOTPC - || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC - || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC20 - || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC - || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC20 - || fixP->fx_r_type == BFD_RELOC_SH_FUNCDESC - || ((fixP->fx_r_type == BFD_RELOC_32) && dont_adjust_reloc_32) - || fixP->fx_r_type == BFD_RELOC_RVA) - return 0; - - /* We need the symbol name for the VTABLE entries */ - if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT - || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) - return 0; - - return 1; -} - -void -sh_elf_final_processing (void) -{ - int val; - - /* Set file-specific flags to indicate if this code needs - a processor with the sh-dsp / sh2e ISA to execute. */ -#ifdef HAVE_SH64 - /* SH5 and above don't know about the valid_arch arch_sh* bits defined - in sh-opc.h, so check SH64 mode before checking valid_arch. */ - if (sh64_isa_mode != sh64_isa_unspecified) - val = EF_SH5; - else -#elif defined TARGET_SYMBIAN - if (1) - { - extern int sh_symbian_find_elf_flags (unsigned int); - - val = sh_symbian_find_elf_flags (valid_arch); - } - else -#endif /* HAVE_SH64 */ - val = sh_find_elf_flags (valid_arch); - - elf_elfheader (stdoutput)->e_flags &= ~EF_SH_MACH_MASK; - elf_elfheader (stdoutput)->e_flags |= val; - - if (sh_fdpic) - elf_elfheader (stdoutput)->e_flags |= EF_SH_FDPIC; -} -#endif - -#ifdef TE_UCLINUX -/* Return the target format for uClinux. */ - -const char * -sh_uclinux_target_format (void) -{ - if (sh_fdpic) - return (!target_big_endian ? "elf32-sh-fdpic" : "elf32-shbig-fdpic"); - else - return (!target_big_endian ? "elf32-shl" : "elf32-sh"); -} -#endif - -/* Apply fixup FIXP to SIZE-byte field BUF given that VAL is its - assembly-time value. If we're generating a reloc for FIXP, - see whether the addend should be stored in-place or whether - it should be in an ELF r_addend field. */ - -static void -apply_full_field_fix (fixS *fixP, char *buf, bfd_vma val, int size) -{ - reloc_howto_type *howto; - - if (fixP->fx_addsy != NULL || fixP->fx_pcrel) - { - howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type); - if (howto && !howto->partial_inplace) - { - fixP->fx_addnumber = val; - return; - } - } - md_number_to_chars (buf, val, size); -} - -/* Apply a fixup to the object file. */ - -void -md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) -{ - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - int lowbyte = target_big_endian ? 1 : 0; - int highbyte = target_big_endian ? 0 : 1; - long val = (long) *valP; - long max, min; - int shift; - - /* A difference between two symbols, the second of which is in the - current section, is transformed in a PC-relative relocation to - the other symbol. We have to adjust the relocation type here. */ - if (fixP->fx_pcrel) - { -#ifndef HAVE_SH64 - /* Safeguard; this must not occur for non-sh64 configurations. */ - gas_assert (fixP->fx_r_type != BFD_RELOC_64); -#endif - - switch (fixP->fx_r_type) - { - default: - break; - - case BFD_RELOC_32: - fixP->fx_r_type = BFD_RELOC_32_PCREL; - break; - - /* Currently, we only support 32-bit PCREL relocations. - We'd need a new reloc type to handle 16_PCREL, and - 8_PCREL is already taken for R_SH_SWITCH8, which - apparently does something completely different than what - we need. FIXME. */ - case BFD_RELOC_16: - bfd_set_error (bfd_error_bad_value); - return; - - case BFD_RELOC_8: - bfd_set_error (bfd_error_bad_value); - return; - } - } - - /* The function adjust_reloc_syms won't convert a reloc against a weak - symbol into a reloc against a section, but bfd_install_relocation - will screw up if the symbol is defined, so we have to adjust val here - to avoid the screw up later. - - For ordinary relocs, this does not happen for ELF, since for ELF, - bfd_install_relocation uses the "special function" field of the - howto, and does not execute the code that needs to be undone, as long - as the special function does not return bfd_reloc_continue. - It can happen for GOT- and PLT-type relocs the way they are - described in elf32-sh.c as they use bfd_elf_generic_reloc, but it - doesn't matter here since those relocs don't use VAL; see below. */ - if (OUTPUT_FLAVOR != bfd_target_elf_flavour - && fixP->fx_addsy != NULL - && S_IS_WEAK (fixP->fx_addsy)) - val -= S_GET_VALUE (fixP->fx_addsy); - - if (SWITCH_TABLE (fixP)) - val -= S_GET_VALUE (fixP->fx_subsy); - - max = min = 0; - shift = 0; - switch (fixP->fx_r_type) - { - case BFD_RELOC_SH_IMM3: - max = 0x7; - * buf = (* buf & 0xf8) | (val & 0x7); - break; - case BFD_RELOC_SH_IMM3U: - max = 0x7; - * buf = (* buf & 0x8f) | ((val & 0x7) << 4); - break; - case BFD_RELOC_SH_DISP12: - max = 0xfff; - buf[lowbyte] = val & 0xff; - buf[highbyte] |= (val >> 8) & 0x0f; - break; - case BFD_RELOC_SH_DISP12BY2: - max = 0xfff; - shift = 1; - buf[lowbyte] = (val >> 1) & 0xff; - buf[highbyte] |= (val >> 9) & 0x0f; - break; - case BFD_RELOC_SH_DISP12BY4: - max = 0xfff; - shift = 2; - buf[lowbyte] = (val >> 2) & 0xff; - buf[highbyte] |= (val >> 10) & 0x0f; - break; - case BFD_RELOC_SH_DISP12BY8: - max = 0xfff; - shift = 3; - buf[lowbyte] = (val >> 3) & 0xff; - buf[highbyte] |= (val >> 11) & 0x0f; - break; - case BFD_RELOC_SH_DISP20: - if (! target_big_endian) - abort(); - max = 0x7ffff; - min = -0x80000; - buf[1] = (buf[1] & 0x0f) | ((val >> 12) & 0xf0); - buf[2] = (val >> 8) & 0xff; - buf[3] = val & 0xff; - break; - case BFD_RELOC_SH_DISP20BY8: - if (!target_big_endian) - abort(); - max = 0x7ffff; - min = -0x80000; - shift = 8; - buf[1] = (buf[1] & 0x0f) | ((val >> 20) & 0xf0); - buf[2] = (val >> 16) & 0xff; - buf[3] = (val >> 8) & 0xff; - break; - - case BFD_RELOC_SH_IMM4: - max = 0xf; - *buf = (*buf & 0xf0) | (val & 0xf); - break; - - case BFD_RELOC_SH_IMM4BY2: - max = 0xf; - shift = 1; - *buf = (*buf & 0xf0) | ((val >> 1) & 0xf); - break; - - case BFD_RELOC_SH_IMM4BY4: - max = 0xf; - shift = 2; - *buf = (*buf & 0xf0) | ((val >> 2) & 0xf); - break; - - case BFD_RELOC_SH_IMM8BY2: - max = 0xff; - shift = 1; - *buf = val >> 1; - break; - - case BFD_RELOC_SH_IMM8BY4: - max = 0xff; - shift = 2; - *buf = val >> 2; - break; - - case BFD_RELOC_8: - case BFD_RELOC_SH_IMM8: - /* Sometimes the 8 bit value is sign extended (e.g., add) and - sometimes it is not (e.g., and). We permit any 8 bit value. - Note that adding further restrictions may invalidate - reasonable looking assembly code, such as ``and -0x1,r0''. */ - max = 0xff; - min = -0xff; - *buf++ = val; - break; - - case BFD_RELOC_SH_PCRELIMM8BY4: - /* If we are dealing with a known destination ... */ - if ((fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy)) - && (fixP->fx_subsy == NULL || S_IS_DEFINED (fixP->fx_addsy))) - { - /* Don't silently move the destination due to misalignment. - The absolute address is the fragment base plus the offset into - the fragment plus the pc relative offset to the label. */ - if ((fixP->fx_frag->fr_address + fixP->fx_where + val) & 3) - as_bad_where (fixP->fx_file, fixP->fx_line, - _("offset to unaligned destination")); - - /* The displacement cannot be zero or backward even if aligned. - Allow -2 because val has already been adjusted somewhere. */ - if (val < -2) - as_bad_where (fixP->fx_file, fixP->fx_line, _("negative offset")); - } - - /* The lower two bits of the PC are cleared before the - displacement is added in. We can assume that the destination - is on a 4 byte boundary. If this instruction is also on a 4 - byte boundary, then we want - (target - here) / 4 - and target - here is a multiple of 4. - Otherwise, we are on a 2 byte boundary, and we want - (target - (here - 2)) / 4 - and target - here is not a multiple of 4. Computing - (target - (here - 2)) / 4 == (target - here + 2) / 4 - works for both cases, since in the first case the addition of - 2 will be removed by the division. target - here is in the - variable val. */ - val = (val + 2) / 4; - if (val & ~0xff) - as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); - buf[lowbyte] = val; - break; - - case BFD_RELOC_SH_PCRELIMM8BY2: - val /= 2; - if (val & ~0xff) - as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); - buf[lowbyte] = val; - break; - - case BFD_RELOC_SH_PCDISP8BY2: - val /= 2; - if (val < -0x80 || val > 0x7f) - as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); - buf[lowbyte] = val; - break; - - case BFD_RELOC_SH_PCDISP12BY2: - val /= 2; - if (val < -0x800 || val > 0x7ff) - as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); - buf[lowbyte] = val & 0xff; - buf[highbyte] |= (val >> 8) & 0xf; - break; - -#ifndef HAVE_SH64 - case BFD_RELOC_64: - apply_full_field_fix (fixP, buf, *valP, 8); - break; -#endif - - case BFD_RELOC_32: - case BFD_RELOC_32_PCREL: - apply_full_field_fix (fixP, buf, val, 4); - break; - - case BFD_RELOC_16: - apply_full_field_fix (fixP, buf, val, 2); - break; - - case BFD_RELOC_SH_USES: - /* Pass the value into sh_reloc(). */ - fixP->fx_addnumber = val; - break; - - case BFD_RELOC_SH_COUNT: - case BFD_RELOC_SH_ALIGN: - case BFD_RELOC_SH_CODE: - case BFD_RELOC_SH_DATA: - case BFD_RELOC_SH_LABEL: - /* Nothing to do here. */ - break; - - case BFD_RELOC_SH_LOOP_START: - case BFD_RELOC_SH_LOOP_END: - - case BFD_RELOC_VTABLE_INHERIT: - case BFD_RELOC_VTABLE_ENTRY: - fixP->fx_done = 0; - return; - -#ifdef OBJ_ELF - case BFD_RELOC_32_PLT_PCREL: - /* Make the jump instruction point to the address of the operand. At - runtime we merely add the offset to the actual PLT entry. */ - * valP = 0xfffffffc; - val = fixP->fx_offset; - if (fixP->fx_subsy) - val -= S_GET_VALUE (fixP->fx_subsy); - apply_full_field_fix (fixP, buf, val, 4); - break; - - case BFD_RELOC_SH_GOTPC: - /* This is tough to explain. We end up with this one if we have - operands that look like "_GLOBAL_OFFSET_TABLE_+[.-.L284]". - The goal here is to obtain the absolute address of the GOT, - and it is strongly preferable from a performance point of - view to avoid using a runtime relocation for this. There are - cases where you have something like: - - .long _GLOBAL_OFFSET_TABLE_+[.-.L66] - - and here no correction would be required. Internally in the - assembler we treat operands of this form as not being pcrel - since the '.' is explicitly mentioned, and I wonder whether - it would simplify matters to do it this way. Who knows. In - earlier versions of the PIC patches, the pcrel_adjust field - was used to store the correction, but since the expression is - not pcrel, I felt it would be confusing to do it this way. */ - * valP -= 1; - apply_full_field_fix (fixP, buf, val, 4); - break; - - case BFD_RELOC_SH_TLS_GD_32: - case BFD_RELOC_SH_TLS_LD_32: - case BFD_RELOC_SH_TLS_IE_32: - S_SET_THREAD_LOCAL (fixP->fx_addsy); - /* Fallthrough */ - case BFD_RELOC_32_GOT_PCREL: - case BFD_RELOC_SH_GOT20: - case BFD_RELOC_SH_GOTPLT32: - case BFD_RELOC_SH_GOTFUNCDESC: - case BFD_RELOC_SH_GOTFUNCDESC20: - case BFD_RELOC_SH_GOTOFFFUNCDESC: - case BFD_RELOC_SH_GOTOFFFUNCDESC20: - case BFD_RELOC_SH_FUNCDESC: - * valP = 0; /* Fully resolved at runtime. No addend. */ - apply_full_field_fix (fixP, buf, 0, 4); - break; - - case BFD_RELOC_SH_TLS_LDO_32: - case BFD_RELOC_SH_TLS_LE_32: - S_SET_THREAD_LOCAL (fixP->fx_addsy); - /* Fallthrough */ - case BFD_RELOC_32_GOTOFF: - case BFD_RELOC_SH_GOTOFF20: - apply_full_field_fix (fixP, buf, val, 4); - break; -#endif - - default: -#ifdef HAVE_SH64 - shmedia_md_apply_fix (fixP, valP); - return; -#else - abort (); -#endif - } - - if (shift != 0) - { - if ((val & ((1 << shift) - 1)) != 0) - as_bad_where (fixP->fx_file, fixP->fx_line, _("misaligned offset")); - if (val >= 0) - val >>= shift; - else - val = ((val >> shift) - | ((long) -1 & ~ ((long) -1 >> shift))); - } - - /* Extend sign for 64-bit host. */ - val = ((val & 0xffffffff) ^ 0x80000000) - 0x80000000; - if (max != 0 && (val < min || val > max)) - as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range")); - else if (max != 0) - /* Stop the generic code from trying to overlow check the value as well. - It may not have the correct value anyway, as we do not store val back - into *valP. */ - fixP->fx_no_overflow = 1; - - if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -} - -/* Called just before address relaxation. Return the length - by which a fragment must grow to reach it's destination. */ - -int -md_estimate_size_before_relax (fragS *fragP, segT segment_type) -{ - int what; - - switch (fragP->fr_subtype) - { - default: -#ifdef HAVE_SH64 - return shmedia_md_estimate_size_before_relax (fragP, segment_type); -#else - abort (); -#endif - - - case C (UNCOND_JUMP, UNDEF_DISP): - /* Used to be a branch to somewhere which was unknown. */ - if (!fragP->fr_symbol) - { - fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12); - } - else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) - { - fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12); - } - else - { - fragP->fr_subtype = C (UNCOND_JUMP, UNDEF_WORD_DISP); - } - break; - - case C (COND_JUMP, UNDEF_DISP): - case C (COND_JUMP_DELAY, UNDEF_DISP): - what = GET_WHAT (fragP->fr_subtype); - /* Used to be a branch to somewhere which was unknown. */ - if (fragP->fr_symbol - && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) - { - /* Got a symbol and it's defined in this segment, become byte - sized - maybe it will fix up. */ - fragP->fr_subtype = C (what, COND8); - } - else if (fragP->fr_symbol) - { - /* Its got a segment, but its not ours, so it will always be long. */ - fragP->fr_subtype = C (what, UNDEF_WORD_DISP); - } - else - { - /* We know the abs value. */ - fragP->fr_subtype = C (what, COND8); - } - break; - - case C (UNCOND_JUMP, UNCOND12): - case C (UNCOND_JUMP, UNCOND32): - case C (UNCOND_JUMP, UNDEF_WORD_DISP): - case C (COND_JUMP, COND8): - case C (COND_JUMP, COND12): - case C (COND_JUMP, COND32): - case C (COND_JUMP, UNDEF_WORD_DISP): - case C (COND_JUMP_DELAY, COND8): - case C (COND_JUMP_DELAY, COND12): - case C (COND_JUMP_DELAY, COND32): - case C (COND_JUMP_DELAY, UNDEF_WORD_DISP): - /* When relaxing a section for the second time, we don't need to - do anything besides return the current size. */ - break; - } - - fragP->fr_var = md_relax_table[fragP->fr_subtype].rlx_length; - return fragP->fr_var; -} - -/* Put number into target byte order. */ - -void -md_number_to_chars (char *ptr, valueT use, int nbytes) -{ -#ifdef HAVE_SH64 - /* We might need to set the contents type to data. */ - sh64_flag_output (); -#endif - - if (! target_big_endian) - number_to_chars_littleendian (ptr, use, nbytes); - else - number_to_chars_bigendian (ptr, use, nbytes); -} - -/* This version is used in obj-coff.c eg. for the sh-hms target. */ - -long -md_pcrel_from (fixS *fixP) -{ - return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address + 2; -} - -long -md_pcrel_from_section (fixS *fixP, segT sec) -{ - if (! sh_local_pcrel (fixP) - && fixP->fx_addsy != (symbolS *) NULL - && (generic_force_reloc (fixP) - || S_GET_SEGMENT (fixP->fx_addsy) != sec)) - { - /* The symbol is undefined (or is defined but not in this section, - or we're not sure about it being the final definition). Let the - linker figure it out. We need to adjust the subtraction of a - symbol to the position of the relocated data, though. */ - return fixP->fx_subsy ? fixP->fx_where + fixP->fx_frag->fr_address : 0; - } - - return md_pcrel_from (fixP); -} - -/* Create a reloc. */ - -arelent * -tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) -{ - arelent *rel; - bfd_reloc_code_real_type r_type; - - rel = (arelent *) xmalloc (sizeof (arelent)); - rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - rel->address = fixp->fx_frag->fr_address + fixp->fx_where; - - r_type = fixp->fx_r_type; - - if (SWITCH_TABLE (fixp)) - { - *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); - rel->addend = 0; - if (r_type == BFD_RELOC_16) - r_type = BFD_RELOC_SH_SWITCH16; - else if (r_type == BFD_RELOC_8) - r_type = BFD_RELOC_8_PCREL; - else if (r_type == BFD_RELOC_32) - r_type = BFD_RELOC_SH_SWITCH32; - else - abort (); - } - else if (r_type == BFD_RELOC_SH_USES) - rel->addend = fixp->fx_addnumber; - else if (r_type == BFD_RELOC_SH_COUNT) - rel->addend = fixp->fx_offset; - else if (r_type == BFD_RELOC_SH_ALIGN) - rel->addend = fixp->fx_offset; - else if (r_type == BFD_RELOC_VTABLE_INHERIT - || r_type == BFD_RELOC_VTABLE_ENTRY) - rel->addend = fixp->fx_offset; - else if (r_type == BFD_RELOC_SH_LOOP_START - || r_type == BFD_RELOC_SH_LOOP_END) - rel->addend = fixp->fx_offset; - else if (r_type == BFD_RELOC_SH_LABEL && fixp->fx_pcrel) - { - rel->addend = 0; - rel->address = rel->addend = fixp->fx_offset; - } -#ifdef HAVE_SH64 - else if (shmedia_init_reloc (rel, fixp)) - ; -#endif - else - rel->addend = fixp->fx_addnumber; - - rel->howto = bfd_reloc_type_lookup (stdoutput, r_type); - - if (rel->howto == NULL) - { - as_bad_where (fixp->fx_file, fixp->fx_line, - _("Cannot represent relocation type %s"), - bfd_get_reloc_code_name (r_type)); - /* Set howto to a garbage value so that we can keep going. */ - rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); - gas_assert (rel->howto != NULL); - } -#ifdef OBJ_ELF - else if (rel->howto->type == R_SH_IND12W) - rel->addend += fixp->fx_offset - 4; -#endif - - return rel; -} - -#ifdef OBJ_ELF -inline static char * -sh_end_of_match (char *cont, char *what) -{ - int len = strlen (what); - - if (strncasecmp (cont, what, strlen (what)) == 0 - && ! is_part_of_name (cont[len])) - return cont + len; - - return NULL; -} - -int -sh_parse_name (char const *name, - expressionS *exprP, - enum expr_mode mode, - char *nextcharP) -{ - char *next = input_line_pointer; - char *next_end; - int reloc_type; - segT segment; - - exprP->X_op_symbol = NULL; - - if (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0) - { - if (! GOT_symbol) - GOT_symbol = symbol_find_or_make (name); - - exprP->X_add_symbol = GOT_symbol; - no_suffix: - /* If we have an absolute symbol or a reg, then we know its - value now. */ - segment = S_GET_SEGMENT (exprP->X_add_symbol); - if (mode != expr_defer && segment == absolute_section) - { - exprP->X_op = O_constant; - exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol); - exprP->X_add_symbol = NULL; - } - else if (mode != expr_defer && segment == reg_section) - { - exprP->X_op = O_register; - exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol); - exprP->X_add_symbol = NULL; - } - else - { - exprP->X_op = O_symbol; - exprP->X_add_number = 0; - } - - return 1; - } - - exprP->X_add_symbol = symbol_find_or_make (name); - - if (*nextcharP != '@') - goto no_suffix; - else if ((next_end = sh_end_of_match (next + 1, "GOTOFF"))) - reloc_type = BFD_RELOC_32_GOTOFF; - else if ((next_end = sh_end_of_match (next + 1, "GOTPLT"))) - reloc_type = BFD_RELOC_SH_GOTPLT32; - else if ((next_end = sh_end_of_match (next + 1, "GOT"))) - reloc_type = BFD_RELOC_32_GOT_PCREL; - else if ((next_end = sh_end_of_match (next + 1, "PLT"))) - reloc_type = BFD_RELOC_32_PLT_PCREL; - else if ((next_end = sh_end_of_match (next + 1, "TLSGD"))) - reloc_type = BFD_RELOC_SH_TLS_GD_32; - else if ((next_end = sh_end_of_match (next + 1, "TLSLDM"))) - reloc_type = BFD_RELOC_SH_TLS_LD_32; - else if ((next_end = sh_end_of_match (next + 1, "GOTTPOFF"))) - reloc_type = BFD_RELOC_SH_TLS_IE_32; - else if ((next_end = sh_end_of_match (next + 1, "TPOFF"))) - reloc_type = BFD_RELOC_SH_TLS_LE_32; - else if ((next_end = sh_end_of_match (next + 1, "DTPOFF"))) - reloc_type = BFD_RELOC_SH_TLS_LDO_32; - else if ((next_end = sh_end_of_match (next + 1, "PCREL"))) - reloc_type = BFD_RELOC_32_PCREL; - else if ((next_end = sh_end_of_match (next + 1, "GOTFUNCDESC"))) - reloc_type = BFD_RELOC_SH_GOTFUNCDESC; - else if ((next_end = sh_end_of_match (next + 1, "GOTOFFFUNCDESC"))) - reloc_type = BFD_RELOC_SH_GOTOFFFUNCDESC; - else if ((next_end = sh_end_of_match (next + 1, "FUNCDESC"))) - reloc_type = BFD_RELOC_SH_FUNCDESC; - else - goto no_suffix; - - *input_line_pointer = *nextcharP; - input_line_pointer = next_end; - *nextcharP = *input_line_pointer; - *input_line_pointer = '\0'; - - exprP->X_op = O_PIC_reloc; - exprP->X_add_number = 0; - exprP->X_md = reloc_type; - - return 1; -} - -void -sh_cfi_frame_initial_instructions (void) -{ - cfi_add_CFA_def_cfa (15, 0); -} - -int -sh_regname_to_dw2regnum (char *regname) -{ - unsigned int regnum = -1; - unsigned int i; - const char *p; - char *q; - static struct { char *name; int dw2regnum; } regnames[] = - { - { "pr", 17 }, { "t", 18 }, { "gbr", 19 }, { "mach", 20 }, - { "macl", 21 }, { "fpul", 23 } - }; - - for (i = 0; i < ARRAY_SIZE (regnames); ++i) - if (strcmp (regnames[i].name, regname) == 0) - return regnames[i].dw2regnum; - - if (regname[0] == 'r') - { - p = regname + 1; - regnum = strtoul (p, &q, 10); - if (p == q || *q || regnum >= 16) - return -1; - } - else if (regname[0] == 'f' && regname[1] == 'r') - { - p = regname + 2; - regnum = strtoul (p, &q, 10); - if (p == q || *q || regnum >= 16) - return -1; - regnum += 25; - } - else if (regname[0] == 'x' && regname[1] == 'd') - { - p = regname + 2; - regnum = strtoul (p, &q, 10); - if (p == q || *q || regnum >= 8) - return -1; - regnum += 87; - } - return regnum; -} -#endif /* OBJ_ELF */ |