diff options
Diffstat (limited to 'binutils-2.17/gas/config/tc-pj.c')
| -rw-r--r-- | binutils-2.17/gas/config/tc-pj.c | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/binutils-2.17/gas/config/tc-pj.c b/binutils-2.17/gas/config/tc-pj.c deleted file mode 100644 index dff23145..00000000 --- a/binutils-2.17/gas/config/tc-pj.c +++ /dev/null @@ -1,546 +0,0 @@ -/*- - tc-pj.c -- Assemble code for Pico Java - Copyright 1999, 2000, 2001, 2002, 2003, 2005 - Free Software Foundation, Inc. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 51 Franklin Street - Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* Contributed by Steve Chamberlain of Transmeta <sac@pobox.com>. */ - -#include "as.h" -#include "safe-ctype.h" -#include "opcode/pj.h" - -extern const pj_opc_info_t pj_opc_info[512]; - -const char comment_chars[] = "!/"; -const char line_separator_chars[] = ";"; -const char line_comment_chars[] = "/!#"; - -static int pending_reloc; -static struct hash_control *opcode_hash_control; - -static void -little (int ignore ATTRIBUTE_UNUSED) -{ - target_big_endian = 0; -} - -static void -big (int ignore ATTRIBUTE_UNUSED) -{ - target_big_endian = 1; -} - -const pseudo_typeS md_pseudo_table[] = -{ - {"ml", little, 0}, - {"mb", big, 0}, - {0, 0, 0} -}; - -const char FLT_CHARS[] = "rRsSfFdDxXpP"; -const char EXP_CHARS[] = "eE"; - -void -md_operand (expressionS *op) -{ - if (strncmp (input_line_pointer, "%hi16", 5) == 0) - { - if (pending_reloc) - as_bad (_("confusing relocation expressions")); - pending_reloc = BFD_RELOC_PJ_CODE_HI16; - input_line_pointer += 5; - expression (op); - } - - if (strncmp (input_line_pointer, "%lo16", 5) == 0) - { - if (pending_reloc) - as_bad (_("confusing relocation expressions")); - pending_reloc = BFD_RELOC_PJ_CODE_LO16; - input_line_pointer += 5; - expression (op); - } -} - -/* Parse an expression and then restore the input line pointer. */ - -static char * -parse_exp_save_ilp (char *s, expressionS *op) -{ - char *save = input_line_pointer; - - input_line_pointer = s; - expression (op); - s = input_line_pointer; - input_line_pointer = save; - return s; -} - -/* This is called by emit_expr via TC_CONS_FIX_NEW when creating a - reloc for a cons. We could use the definition there, except that - we want to handle magic pending reloc expressions specially. */ - -void -pj_cons_fix_new_pj (fragS *frag, int where, int nbytes, expressionS *exp) -{ - static int rv[5][2] = - { { 0, 0 }, - { BFD_RELOC_8, BFD_RELOC_8 }, - { BFD_RELOC_PJ_CODE_DIR16, BFD_RELOC_16 }, - { 0, 0 }, - { BFD_RELOC_PJ_CODE_DIR32, BFD_RELOC_32 }}; - - fix_new_exp (frag, where, nbytes, exp, 0, - pending_reloc ? pending_reloc - : rv[nbytes][(now_seg->flags & SEC_CODE) ? 0 : 1]); - - pending_reloc = 0; -} - -/* Turn a reloc description character from the pj-opc.h table into - code which BFD can handle. */ - -static int -c_to_r (int x) -{ - switch (x) - { - case O_R8: - return BFD_RELOC_8_PCREL; - case O_U8: - case O_8: - return BFD_RELOC_8; - case O_R16: - return BFD_RELOC_PJ_CODE_REL16; - case O_U16: - case O_16: - return BFD_RELOC_PJ_CODE_DIR16; - case O_R32: - return BFD_RELOC_PJ_CODE_REL32; - case O_32: - return BFD_RELOC_PJ_CODE_DIR32; - } - abort (); - return 0; -} - -/* Handler for the ipush fake opcode, - turns ipush <foo> into sipush lo16<foo>, sethi hi16<foo>. */ - -static void -ipush_code (pj_opc_info_t *opcode ATTRIBUTE_UNUSED, char *str) -{ - char *b = frag_more (6); - expressionS arg; - - b[0] = 0x11; - b[3] = 0xed; - parse_exp_save_ilp (str + 1, &arg); - if (pending_reloc) - { - as_bad (_("can't have relocation for ipush")); - pending_reloc = 0; - } - - fix_new_exp (frag_now, b - frag_now->fr_literal + 1, 2, - &arg, 0, BFD_RELOC_PJ_CODE_DIR16); - fix_new_exp (frag_now, b - frag_now->fr_literal + 4, 2, - &arg, 0, BFD_RELOC_PJ_CODE_HI16); -} - -/* Insert names into the opcode table which are really mini macros, - not opcodes. The fakeness is indicated with an opcode of -1. */ - -static void -fake_opcode (const char *name, - void (*func) (struct pj_opc_info_t *, char *)) -{ - pj_opc_info_t * fake = xmalloc (sizeof (pj_opc_info_t)); - - fake->opcode = -1; - fake->opcode_next = -1; - fake->u.func = func; - hash_insert (opcode_hash_control, name, (char *) fake); -} - -/* Enter another entry into the opcode hash table so the same opcode - can have another name. */ - -static void -alias (const char *new, const char *old) -{ - hash_insert (opcode_hash_control, new, - (char *) hash_find (opcode_hash_control, old)); -} - -/* This function is called once, at assembler startup time. It sets - up the hash table with all the opcodes in it, and also initializes - some aliases for compatibility with other assemblers. */ - -void -md_begin (void) -{ - const pj_opc_info_t *opcode; - opcode_hash_control = hash_new (); - - /* Insert names into hash table. */ - for (opcode = pj_opc_info; opcode->u.name; opcode++) - hash_insert (opcode_hash_control, opcode->u.name, (char *) opcode); - - /* Insert the only fake opcode. */ - fake_opcode ("ipush", ipush_code); - - /* Add some aliases for opcode names. */ - alias ("ifeq_s", "ifeq"); - alias ("ifne_s", "ifne"); - alias ("if_icmpge_s", "if_icmpge"); - alias ("if_icmpne_s", "if_icmpne"); - alias ("if_icmpeq_s", "if_icmpeq"); - alias ("if_icmpgt_s", "if_icmpgt"); - alias ("goto_s", "goto"); - - bfd_set_arch_mach (stdoutput, TARGET_ARCH, 0); -} - -/* 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_start; - char *op_end; - - pj_opc_info_t *opcode; - char *output; - int idx = 0; - char pend; - - int nlen = 0; - - /* Drop leading whitespace. */ - while (*str == ' ') - str++; - - /* Find the op code end. */ - op_start = str; - for (op_end = str; - *op_end && !is_end_of_line[*op_end & 0xff] && *op_end != ' '; - op_end++) - nlen++; - - pend = *op_end; - *op_end = 0; - - if (nlen == 0) - as_bad (_("can't find opcode ")); - - opcode = (pj_opc_info_t *) hash_find (opcode_hash_control, op_start); - *op_end = pend; - - if (opcode == NULL) - { - as_bad (_("unknown opcode %s"), op_start); - return; - } - - if (opcode->opcode == -1) - { - /* It's a fake opcode. Dig out the args and pretend that was - what we were passed. */ - (*opcode->u.func) (opcode, op_end); - } - else - { - int an; - - output = frag_more (opcode->len); - output[idx++] = opcode->opcode; - - if (opcode->opcode_next != -1) - output[idx++] = opcode->opcode_next; - - for (an = 0; opcode->arg[an]; an++) - { - expressionS arg; - - if (*op_end == ',' && an != 0) - op_end++; - - if (*op_end == 0) - as_bad ("expected expresssion"); - - op_end = parse_exp_save_ilp (op_end, &arg); - - fix_new_exp (frag_now, - output - frag_now->fr_literal + idx, - ASIZE (opcode->arg[an]), - &arg, - PCREL (opcode->arg[an]), - pending_reloc ? pending_reloc : c_to_r (opcode->arg[an])); - - idx += ASIZE (opcode->arg[an]); - pending_reloc = 0; - } - - while (ISSPACE (*op_end)) - op_end++; - - if (*op_end != 0) - as_warn ("extra stuff on line ignored"); - - } - - if (pending_reloc) - as_bad ("Something forgot to clean up\n"); - -} - -/* Turn a string in input_line_pointer into a floating point constant - of type type, and store the appropriate bytes in *LITP. The number - of LITTLENUMS emitted is stored in *SIZEP . An error message is - returned, or NULL on OK. */ - -char * -md_atof (int type, char *litP, int *sizeP) -{ - int prec; - LITTLENUM_TYPE words[4]; - char *t; - int i; - - switch (type) - { - case 'f': - prec = 2; - break; - - case 'd': - prec = 4; - break; - - default: - *sizeP = 0; - return _("bad call to md_atof"); - } - - t = atof_ieee (input_line_pointer, type, words); - if (t) - input_line_pointer = t; - - *sizeP = prec * 2; - - if (!target_big_endian) - { - for (i = prec - 1; i >= 0; i--) - { - md_number_to_chars (litP, (valueT) words[i], 2); - litP += 2; - } - } - else - { - for (i = 0; i < prec; i++) - { - md_number_to_chars (litP, (valueT) words[i], 2); - litP += 2; - } - } - - return NULL; -} - -const char *md_shortopts = ""; - -struct option md_longopts[] = -{ -#define OPTION_LITTLE (OPTION_MD_BASE) -#define OPTION_BIG (OPTION_LITTLE + 1) - - {"little", no_argument, NULL, OPTION_LITTLE}, - {"big", no_argument, NULL, OPTION_BIG}, - {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_LITTLE: - little (0); - break; - case OPTION_BIG: - big (0); - break; - default: - return 0; - } - return 1; -} - -void -md_show_usage (FILE *stream) -{ - fprintf (stream, _("\ -PJ options:\n\ --little generate little endian code\n\ --big generate big endian code\n")); -} - -/* 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; - long val = *valP; - long max, min; - int shift; - - max = min = 0; - shift = 0; - switch (fixP->fx_r_type) - { - case BFD_RELOC_VTABLE_INHERIT: - case BFD_RELOC_VTABLE_ENTRY: - fixP->fx_done = 0; - return; - - case BFD_RELOC_PJ_CODE_REL16: - if (val < -0x8000 || val >= 0x7fff) - as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far")); - buf[0] |= (val >> 8) & 0xff; - buf[1] = val & 0xff; - break; - - case BFD_RELOC_PJ_CODE_HI16: - *buf++ = val >> 24; - *buf++ = val >> 16; - fixP->fx_addnumber = val & 0xffff; - break; - - case BFD_RELOC_PJ_CODE_DIR16: - case BFD_RELOC_PJ_CODE_LO16: - *buf++ = val >> 8; - *buf++ = val >> 0; - - max = 0xffff; - min = -0xffff; - break; - - case BFD_RELOC_8: - max = 0xff; - min = -0xff; - *buf++ = val; - break; - - case BFD_RELOC_PJ_CODE_DIR32: - *buf++ = val >> 24; - *buf++ = val >> 16; - *buf++ = val >> 8; - *buf++ = val >> 0; - break; - - case BFD_RELOC_32: - if (target_big_endian) - { - *buf++ = val >> 24; - *buf++ = val >> 16; - *buf++ = val >> 8; - *buf++ = val >> 0; - } - else - { - *buf++ = val >> 0; - *buf++ = val >> 8; - *buf++ = val >> 16; - *buf++ = val >> 24; - } - break; - - case BFD_RELOC_16: - if (target_big_endian) - { - *buf++ = val >> 8; - *buf++ = val >> 0; - } - else - { - *buf++ = val >> 0; - *buf++ = val >> 8; - } - break; - - default: - abort (); - } - - if (max != 0 && (val < min || val > max)) - as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range")); - - if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -} - -/* Put number into target byte order. Always put values in an - executable section into big endian order. */ - -void -md_number_to_chars (char *ptr, valueT use, int nbytes) -{ - if (target_big_endian || now_seg->flags & SEC_CODE) - number_to_chars_bigendian (ptr, use, nbytes); - else - number_to_chars_littleendian (ptr, use, nbytes); -} - -/* Translate internal representation of relocation info to BFD target - format. */ - -arelent * -tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) -{ - arelent *rel; - bfd_reloc_code_real_type r_type; - - rel = xmalloc (sizeof (arelent)); - rel->sym_ptr_ptr = 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; - 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); - assert (rel->howto != NULL); - } - - return rel; -} |