diff options
Diffstat (limited to 'gas/config/tc-mn10300.c')
| -rw-r--r-- | gas/config/tc-mn10300.c | 1649 |
1 files changed, 0 insertions, 1649 deletions
diff --git a/gas/config/tc-mn10300.c b/gas/config/tc-mn10300.c deleted file mode 100644 index 3f9e9cee7d2..00000000000 --- a/gas/config/tc-mn10300.c +++ /dev/null @@ -1,1649 +0,0 @@ -/* tc-mn10300.c -- Assembler code for the Matsushita 10300 - - Copyright (C) 1996, 1997, 1998 Free Software Foundation. - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -#include <stdio.h> -#include <ctype.h> -#include "as.h" -#include "subsegs.h" -#include "opcode/mn10300.h" - -/* Structure to hold information about predefined registers. */ -struct reg_name -{ - const char *name; - int value; -}; - -/* Generic assembler global variables which must be defined by all targets. */ - -/* Characters which always start a comment. */ -const char comment_chars[] = "#"; - -/* Characters which start a comment at the beginning of a line. */ -const char line_comment_chars[] = ";#"; - -/* Characters which may be used to separate multiple commands on a - single line. */ -const char line_separator_chars[] = ";"; - -/* Characters which are used to indicate an exponent in a floating - point number. */ -const char EXP_CHARS[] = "eE"; - -/* Characters which mean that a number is a floating point constant, - as in 0d1.0. */ -const char FLT_CHARS[] = "dD"; - - -const relax_typeS md_relax_table[] = { - /* bCC relaxing */ - {0x7f, -0x80, 2, 1}, - {0x7fff, -0x8000, 5, 2}, - {0x7fffffff, -0x80000000, 7, 0}, - - /* bCC relaxing (uncommon cases) */ - {0x7f, -0x80, 3, 4}, - {0x7fff, -0x8000, 6, 5}, - {0x7fffffff, -0x80000000, 8, 0}, - - /* call relaxing */ - {0x7fff, -0x8000, 5, 7}, - {0x7fffffff, -0x80000000, 7, 0}, - - /* calls relaxing */ - {0x7fff, -0x8000, 4, 9}, - {0x7fffffff, -0x80000000, 6, 0}, - - /* jmp relaxing */ - {0x7f, -0x80, 2, 11}, - {0x7fff, -0x8000, 3, 12}, - {0x7fffffff, -0x80000000, 5, 0}, - -}; - -/* local functions */ -static void mn10300_insert_operand PARAMS ((unsigned long *, unsigned long *, - const struct mn10300_operand *, - offsetT, char *, unsigned, - unsigned)); -static unsigned long check_operand PARAMS ((unsigned long, - const struct mn10300_operand *, - offsetT)); -static int reg_name_search PARAMS ((const struct reg_name *, int, const char *)); -static boolean data_register_name PARAMS ((expressionS *expressionP)); -static boolean address_register_name PARAMS ((expressionS *expressionP)); -static boolean other_register_name PARAMS ((expressionS *expressionP)); -static void set_arch_mach PARAMS ((int)); - -static int current_machine; - -/* fixups */ -#define MAX_INSN_FIXUPS (5) -struct mn10300_fixup -{ - expressionS exp; - int opindex; - bfd_reloc_code_real_type reloc; -}; -struct mn10300_fixup fixups[MAX_INSN_FIXUPS]; -static int fc; - -/* We must store the value of each register operand so that we can - verify that certain registers do not match. */ -int mn10300_reg_operands[MN10300_MAX_OPERANDS]; - -const char *md_shortopts = ""; -struct option md_longopts[] = { - {NULL, no_argument, NULL, 0} -}; -size_t md_longopts_size = sizeof(md_longopts); - -/* The target specific pseudo-ops which we support. */ -const pseudo_typeS md_pseudo_table[] = -{ - { "am30", set_arch_mach, 300 }, - { "mn10300", set_arch_mach, 300 }, - {NULL, 0, 0} -}; - -/* Opcode hash table. */ -static struct hash_control *mn10300_hash; - -/* This table is sorted. Suitable for searching by a binary search. */ -static const struct reg_name data_registers[] = -{ - { "d0", 0 }, - { "d1", 1 }, - { "d2", 2 }, - { "d3", 3 }, -}; -#define DATA_REG_NAME_CNT (sizeof(data_registers) / sizeof(struct reg_name)) - -static const struct reg_name address_registers[] = -{ - { "a0", 0 }, - { "a1", 1 }, - { "a2", 2 }, - { "a3", 3 }, -}; -#define ADDRESS_REG_NAME_CNT (sizeof(address_registers) / sizeof(struct reg_name)) - - -static const struct reg_name other_registers[] = -{ - { "mdr", 0 }, - { "psw", 0 }, - { "sp", 0 }, -}; -#define OTHER_REG_NAME_CNT (sizeof(other_registers) / sizeof(struct reg_name)) - -/* reg_name_search does a binary search of the given register table - to see if "name" is a valid regiter name. Returns the register - number from the array on success, or -1 on failure. */ - -static int -reg_name_search (regs, regcount, name) - const struct reg_name *regs; - int regcount; - const char *name; -{ - int middle, low, high; - int cmp; - - low = 0; - high = regcount - 1; - - do - { - middle = (low + high) / 2; - cmp = strcasecmp (name, regs[middle].name); - if (cmp < 0) - high = middle - 1; - else if (cmp > 0) - low = middle + 1; - else - return regs[middle].value; - } - while (low <= high); - return -1; -} - - - -/* Summary of register_name(). - * - * in: Input_line_pointer points to 1st char of operand. - * - * out: A expressionS. - * The operand may have been a register: in this case, X_op == O_register, - * X_add_number is set to the register number, and truth is returned. - * Input_line_pointer->(next non-blank) char after operand, or is in - * its original state. - */ -static boolean -data_register_name (expressionP) - expressionS *expressionP; -{ - int reg_number; - char *name; - char *start; - char c; - - /* Find the spelling of the operand */ - start = name = input_line_pointer; - - c = get_symbol_end (); - reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name); - - /* look to see if it's in the register table */ - if (reg_number >= 0) - { - expressionP->X_op = O_register; - expressionP->X_add_number = reg_number; - - /* make the rest nice */ - expressionP->X_add_symbol = NULL; - expressionP->X_op_symbol = NULL; - *input_line_pointer = c; /* put back the delimiting char */ - return true; - } - else - { - /* reset the line as if we had not done anything */ - *input_line_pointer = c; /* put back the delimiting char */ - input_line_pointer = start; /* reset input_line pointer */ - return false; - } -} - -/* Summary of register_name(). - * - * in: Input_line_pointer points to 1st char of operand. - * - * out: A expressionS. - * The operand may have been a register: in this case, X_op == O_register, - * X_add_number is set to the register number, and truth is returned. - * Input_line_pointer->(next non-blank) char after operand, or is in - * its original state. - */ -static boolean -address_register_name (expressionP) - expressionS *expressionP; -{ - int reg_number; - char *name; - char *start; - char c; - - /* Find the spelling of the operand */ - start = name = input_line_pointer; - - c = get_symbol_end (); - reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name); - - /* look to see if it's in the register table */ - if (reg_number >= 0) - { - expressionP->X_op = O_register; - expressionP->X_add_number = reg_number; - - /* make the rest nice */ - expressionP->X_add_symbol = NULL; - expressionP->X_op_symbol = NULL; - *input_line_pointer = c; /* put back the delimiting char */ - return true; - } - else - { - /* reset the line as if we had not done anything */ - *input_line_pointer = c; /* put back the delimiting char */ - input_line_pointer = start; /* reset input_line pointer */ - return false; - } -} - -/* Summary of register_name(). - * - * in: Input_line_pointer points to 1st char of operand. - * - * out: A expressionS. - * The operand may have been a register: in this case, X_op == O_register, - * X_add_number is set to the register number, and truth is returned. - * Input_line_pointer->(next non-blank) char after operand, or is in - * its original state. - */ -static boolean -other_register_name (expressionP) - expressionS *expressionP; -{ - int reg_number; - char *name; - char *start; - char c; - - /* Find the spelling of the operand */ - start = name = input_line_pointer; - - c = get_symbol_end (); - reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name); - - /* look to see if it's in the register table */ - if (reg_number >= 0) - { - expressionP->X_op = O_register; - expressionP->X_add_number = reg_number; - - /* make the rest nice */ - expressionP->X_add_symbol = NULL; - expressionP->X_op_symbol = NULL; - *input_line_pointer = c; /* put back the delimiting char */ - return true; - } - else - { - /* reset the line as if we had not done anything */ - *input_line_pointer = c; /* put back the delimiting char */ - input_line_pointer = start; /* reset input_line pointer */ - return false; - } -} - -void -md_show_usage (stream) - FILE *stream; -{ - fprintf(stream, _("MN10300 options:\n\ -none yet\n")); -} - -int -md_parse_option (c, arg) - int c; - char *arg; -{ - return 0; -} - -symbolS * -md_undefined_symbol (name) - char *name; -{ - return 0; -} - -char * -md_atof (type, litp, sizep) - 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; - - for (i = prec - 1; i >= 0; i--) - { - md_number_to_chars (litp, (valueT) words[i], 2); - litp += 2; - } - - return NULL; -} - - -void -md_convert_frag (abfd, sec, fragP) - bfd *abfd; - asection *sec; - fragS *fragP; -{ - static unsigned long label_count = 0; - char buf[40]; - - subseg_change (sec, 0); - if (fragP->fr_subtype == 0) - { - fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 2; - } - else if (fragP->fr_subtype == 1) - { - /* Reverse the condition of the first branch. */ - int offset = fragP->fr_fix; - int opcode = fragP->fr_literal[offset] & 0xff; - - switch (opcode) - { - case 0xc8: - opcode = 0xc9; - break; - case 0xc9: - opcode = 0xc8; - break; - case 0xc0: - opcode = 0xc2; - break; - case 0xc2: - opcode = 0xc0; - break; - case 0xc3: - opcode = 0xc1; - break; - case 0xc1: - opcode = 0xc3; - break; - case 0xc4: - opcode = 0xc6; - break; - case 0xc6: - opcode = 0xc4; - break; - case 0xc7: - opcode = 0xc5; - break; - case 0xc5: - opcode = 0xc7; - break; - default: - abort (); - } - fragP->fr_literal[offset] = opcode; - - /* Create a fixup for the reversed conditional branch. */ - sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); - fix_new (fragP, fragP->fr_fix + 1, 1, - symbol_new (buf, sec, 0, fragP->fr_next), - fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); - - /* Now create the unconditional branch + fixup to the - final target. */ - fragP->fr_literal[offset + 2] = 0xcc; - fix_new (fragP, fragP->fr_fix + 3, 2, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 5; - } - else if (fragP->fr_subtype == 2) - { - /* Reverse the condition of the first branch. */ - int offset = fragP->fr_fix; - int opcode = fragP->fr_literal[offset] & 0xff; - - switch (opcode) - { - case 0xc8: - opcode = 0xc9; - break; - case 0xc9: - opcode = 0xc8; - break; - case 0xc0: - opcode = 0xc2; - break; - case 0xc2: - opcode = 0xc0; - break; - case 0xc3: - opcode = 0xc1; - break; - case 0xc1: - opcode = 0xc3; - break; - case 0xc4: - opcode = 0xc6; - break; - case 0xc6: - opcode = 0xc4; - break; - case 0xc7: - opcode = 0xc5; - break; - case 0xc5: - opcode = 0xc7; - break; - default: - abort (); - } - fragP->fr_literal[offset] = opcode; - - /* Create a fixup for the reversed conditional branch. */ - sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); - fix_new (fragP, fragP->fr_fix + 1, 1, - symbol_new (buf, sec, 0, fragP->fr_next), - fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); - - /* Now create the unconditional branch + fixup to the - final target. */ - fragP->fr_literal[offset + 2] = 0xdc; - fix_new (fragP, fragP->fr_fix + 3, 4, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 7; - } - else if (fragP->fr_subtype == 3) - { - fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol, - fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 3; - } - else if (fragP->fr_subtype == 4) - { - /* Reverse the condition of the first branch. */ - int offset = fragP->fr_fix; - int opcode = fragP->fr_literal[offset + 1] & 0xff; - - switch (opcode) - { - case 0xe8: - opcode = 0xe9; - break; - case 0xe9: - opcode = 0xe8; - break; - case 0xea: - opcode = 0xeb; - break; - case 0xeb: - opcode = 0xea; - break; - default: - abort (); - } - fragP->fr_literal[offset + 1] = opcode; - - /* Create a fixup for the reversed conditional branch. */ - sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); - fix_new (fragP, fragP->fr_fix + 2, 1, - symbol_new (buf, sec, 0, fragP->fr_next), - fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); - - /* Now create the unconditional branch + fixup to the - final target. */ - fragP->fr_literal[offset + 3] = 0xcc; - fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 6; - } - else if (fragP->fr_subtype == 5) - { - /* Reverse the condition of the first branch. */ - int offset = fragP->fr_fix; - int opcode = fragP->fr_literal[offset + 1] & 0xff; - - switch (opcode) - { - case 0xe8: - opcode = 0xe9; - break; - case 0xea: - opcode = 0xeb; - break; - case 0xeb: - opcode = 0xea; - break; - default: - abort (); - } - fragP->fr_literal[offset + 1] = opcode; - - /* Create a fixup for the reversed conditional branch. */ - sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); - fix_new (fragP, fragP->fr_fix + 2, 1, - symbol_new (buf, sec, 0, fragP->fr_next), - fragP->fr_offset + 2, 1, BFD_RELOC_8_PCREL); - - /* Now create the unconditional branch + fixup to the - final target. */ - fragP->fr_literal[offset + 3] = 0xdc; - fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 8; - } - else if (fragP->fr_subtype == 6) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xcd; - fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 5; - } - else if (fragP->fr_subtype == 7) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xdd; - fragP->fr_literal[offset + 5] = fragP->fr_literal[offset + 3]; - fragP->fr_literal[offset + 6] = fragP->fr_literal[offset + 4]; - - fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 7; - } - else if (fragP->fr_subtype == 8) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xfa; - fragP->fr_literal[offset + 1] = 0xff; - fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol, - fragP->fr_offset + 2, 1, BFD_RELOC_16_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 4; - } - else if (fragP->fr_subtype == 9) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xfc; - fragP->fr_literal[offset + 1] = 0xff; - - fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, - fragP->fr_offset + 2, 1, BFD_RELOC_32_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 6; - } - else if (fragP->fr_subtype == 10) - { - fragP->fr_literal[fragP->fr_fix] = 0xca; - fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_8_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 2; - } - else if (fragP->fr_subtype == 11) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xcc; - - fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_16_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 3; - } - else if (fragP->fr_subtype == 12) - { - int offset = fragP->fr_fix; - fragP->fr_literal[offset] = 0xdc; - - fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, - fragP->fr_offset + 1, 1, BFD_RELOC_32_PCREL); - fragP->fr_var = 0; - fragP->fr_fix += 5; - } - else - abort (); -} - -valueT -md_section_align (seg, addr) - asection *seg; - valueT addr; -{ - int align = bfd_get_section_alignment (stdoutput, seg); - return ((addr + (1 << align) - 1) & (-1 << align)); -} - -void -md_begin () -{ - char *prev_name = ""; - register const struct mn10300_opcode *op; - - mn10300_hash = hash_new(); - - /* Insert unique names into hash table. The MN10300 instruction set - has many identical opcode names that have different opcodes based - on the operands. This hash table then provides a quick index to - the first opcode with a particular name in the opcode table. */ - - op = mn10300_opcodes; - while (op->name) - { - if (strcmp (prev_name, op->name)) - { - prev_name = (char *) op->name; - hash_insert (mn10300_hash, op->name, (char *) op); - } - op++; - } - - /* This is both a simplification (we don't have to write md_apply_fix) - and support for future optimizations (branch shortening and similar - stuff in the linker). */ - linkrelax = 1; - - /* Set the default machine type. */ - if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, 300)) - as_warn (_("could not set architecture and machine")); - - current_machine = 300; -} - -void -md_assemble (str) - char *str; -{ - char *s; - struct mn10300_opcode *opcode; - struct mn10300_opcode *next_opcode; - const unsigned char *opindex_ptr; - int next_opindex, relaxable; - unsigned long insn, extension, size = 0; - char *f; - int i; - int match; - - /* Get the opcode. */ - for (s = str; *s != '\0' && ! isspace (*s); s++) - ; - if (*s != '\0') - *s++ = '\0'; - - /* find the first opcode with the proper name */ - opcode = (struct mn10300_opcode *)hash_find (mn10300_hash, str); - if (opcode == NULL) - { - as_bad (_("Unrecognized opcode: `%s'"), str); - return; - } - - str = s; - while (isspace (*str)) - ++str; - - input_line_pointer = str; - - for(;;) - { - const char *errmsg; - int op_idx; - char *hold; - int extra_shift = 0; - - - errmsg = _("Invalid opcode/operands"); - - /* Reset the array of register operands. */ - memset (mn10300_reg_operands, -1, sizeof (mn10300_reg_operands)); - - relaxable = 0; - fc = 0; - match = 0; - next_opindex = 0; - insn = opcode->opcode; - extension = 0; - - /* If the instruction is not available on the current machine - then it can not possibly match. */ - if (opcode->machine - && (opcode->machine != current_machine)) - goto error; - - for (op_idx = 1, opindex_ptr = opcode->operands; - *opindex_ptr != 0; - opindex_ptr++, op_idx++) - { - const struct mn10300_operand *operand; - expressionS ex; - - if (next_opindex == 0) - { - operand = &mn10300_operands[*opindex_ptr]; - } - else - { - operand = &mn10300_operands[next_opindex]; - next_opindex = 0; - } - - while (*str == ' ' || *str == ',') - ++str; - - if (operand->flags & MN10300_OPERAND_RELAX) - relaxable = 1; - - /* Gather the operand. */ - hold = input_line_pointer; - input_line_pointer = str; - - if (operand->flags & MN10300_OPERAND_PAREN) - { - if (*input_line_pointer != ')' && *input_line_pointer != '(') - { - input_line_pointer = hold; - str = hold; - goto error; - } - input_line_pointer++; - goto keep_going; - } - /* See if we can match the operands. */ - else if (operand->flags & MN10300_OPERAND_DREG) - { - if (!data_register_name (&ex)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - } - else if (operand->flags & MN10300_OPERAND_AREG) - { - if (!address_register_name (&ex)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - } - else if (operand->flags & MN10300_OPERAND_SP) - { - char *start = input_line_pointer; - char c = get_symbol_end (); - - if (strcasecmp (start, "sp") != 0) - { - *input_line_pointer = c; - input_line_pointer = hold; - str = hold; - goto error; - } - *input_line_pointer = c; - goto keep_going; - } - else if (operand->flags & MN10300_OPERAND_PSW) - { - char *start = input_line_pointer; - char c = get_symbol_end (); - - if (strcasecmp (start, "psw") != 0) - { - *input_line_pointer = c; - input_line_pointer = hold; - str = hold; - goto error; - } - *input_line_pointer = c; - goto keep_going; - } - else if (operand->flags & MN10300_OPERAND_MDR) - { - char *start = input_line_pointer; - char c = get_symbol_end (); - - if (strcasecmp (start, "mdr") != 0) - { - *input_line_pointer = c; - input_line_pointer = hold; - str = hold; - goto error; - } - *input_line_pointer = c; - goto keep_going; - } - else if (operand->flags & MN10300_OPERAND_REG_LIST) - { - unsigned int value = 0; - if (*input_line_pointer != '[') - { - input_line_pointer = hold; - str = hold; - goto error; - } - - /* Eat the '['. */ - input_line_pointer++; - - /* We used to reject a null register list here; however, - we accept it now so the compiler can emit "call" instructions - for all calls to named functions. - - The linker can then fill in the appropriate bits for the - register list and stack size or change the instruction - into a "calls" if using "call" is not profitable. */ - while (*input_line_pointer != ']') - { - char *start; - char c; - - if (*input_line_pointer == ',') - input_line_pointer++; - - start = input_line_pointer; - c = get_symbol_end (); - - if (strcasecmp (start, "d2") == 0) - { - value |= 0x80; - *input_line_pointer = c; - } - else if (strcasecmp (start, "d3") == 0) - { - value |= 0x40; - *input_line_pointer = c; - } - else if (strcasecmp (start, "a2") == 0) - { - value |= 0x20; - *input_line_pointer = c; - } - else if (strcasecmp (start, "a3") == 0) - { - value |= 0x10; - *input_line_pointer = c; - } - else if (strcasecmp (start, "other") == 0) - { - value |= 0x08; - *input_line_pointer = c; - } - else - { - input_line_pointer = hold; - str = hold; - goto error; - } - } - input_line_pointer++; - mn10300_insert_operand (&insn, &extension, operand, - value, (char *) NULL, 0, 0); - goto keep_going; - - } - else if (data_register_name (&ex)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - else if (address_register_name (&ex)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - else if (other_register_name (&ex)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - else if (*str == ')' || *str == '(') - { - input_line_pointer = hold; - str = hold; - goto error; - } - else - { - expression (&ex); - } - - switch (ex.X_op) - { - case O_illegal: - errmsg = _("illegal operand"); - goto error; - case O_absent: - errmsg = _("missing operand"); - goto error; - case O_register: - { - int mask; - - mask = MN10300_OPERAND_DREG | MN10300_OPERAND_AREG; - if ((operand->flags & mask) == 0) - { - input_line_pointer = hold; - str = hold; - goto error; - } - - if (opcode->format == FMT_D1 || opcode->format == FMT_S1) - extra_shift = 8; - else if (opcode->format == FMT_D2 - || opcode->format == FMT_D4 - || opcode->format == FMT_S2 - || opcode->format == FMT_S4 - || opcode->format == FMT_S6 - || opcode->format == FMT_D5) - extra_shift = 16; - else - extra_shift = 0; - - mn10300_insert_operand (&insn, &extension, operand, - ex.X_add_number, (char *) NULL, - 0, extra_shift); - - - /* And note the register number in the register array. */ - mn10300_reg_operands[op_idx - 1] = ex.X_add_number; - break; - } - - case O_constant: - /* If this operand can be promoted, and it doesn't - fit into the allocated bitfield for this insn, - then promote it (ie this opcode does not match). */ - if (operand->flags - & (MN10300_OPERAND_PROMOTE | MN10300_OPERAND_RELAX) - && ! check_operand (insn, operand, ex.X_add_number)) - { - input_line_pointer = hold; - str = hold; - goto error; - } - - mn10300_insert_operand (&insn, &extension, operand, - ex.X_add_number, (char *) NULL, - 0, 0); - break; - - default: - /* If this operand can be promoted, then this opcode didn't - match since we can't know if it needed promotion! */ - if (operand->flags & MN10300_OPERAND_PROMOTE) - { - input_line_pointer = hold; - str = hold; - goto error; - } - - /* We need to generate a fixup for this expression. */ - if (fc >= MAX_INSN_FIXUPS) - as_fatal (_("too many fixups")); - fixups[fc].exp = ex; - fixups[fc].opindex = *opindex_ptr; - fixups[fc].reloc = BFD_RELOC_UNUSED; - ++fc; - break; - } - -keep_going: - str = input_line_pointer; - input_line_pointer = hold; - - while (*str == ' ' || *str == ',') - ++str; - - } - - /* Make sure we used all the operands! */ - if (*str != ',') - match = 1; - - /* If this instruction has registers that must not match, verify - that they do indeed not match. */ - if (opcode->no_match_operands) - { - int i; - - /* Look at each operand to see if it's marked. */ - for (i = 0; i < MN10300_MAX_OPERANDS; i++) - { - if ((1 << i) & opcode->no_match_operands) - { - int j; - - /* operand I is marked. Check that it does not match any - operands > I which are marked. */ - for (j = i + 1; j < MN10300_MAX_OPERANDS; j++) - { - if (((1 << j) & opcode->no_match_operands) - && mn10300_reg_operands[i] == mn10300_reg_operands[j]) - { - errmsg = _("Invalid register specification."); - match = 0; - goto error; - } - } - } - } - } - - error: - if (match == 0) - { - next_opcode = opcode + 1; - if (!strcmp(next_opcode->name, opcode->name)) - { - opcode = next_opcode; - continue; - } - - as_bad ("%s", errmsg); - return; - } - break; - } - - while (isspace (*str)) - ++str; - - if (*str != '\0') - as_bad (_("junk at end of line: `%s'"), str); - - input_line_pointer = str; - - /* Determine the size of the instruction. */ - if (opcode->format == FMT_S0) - size = 1; - - if (opcode->format == FMT_S1 || opcode->format == FMT_D0) - size = 2; - - if (opcode->format == FMT_S2 || opcode->format == FMT_D1) - size = 3; - - - if (opcode->format == FMT_S4) - size = 5; - - if (opcode->format == FMT_S6 || opcode->format == FMT_D5) - size = 7; - - if (opcode->format == FMT_D2) - size = 4; - - if (opcode->format == FMT_D4) - size = 6; - - if (relaxable && fc > 0) - { - int type; - - /* bCC */ - if (size == 2) - { - /* Handle bra specially. Basically treat it like jmp so - that we automatically handle 8, 16 and 32 bit offsets - correctly as well as jumps to an undefined address. - - It is also important to not treat it like other bCC - instructions since the long forms of bra is different - from other bCC instructions. */ - if (opcode->opcode == 0xca00) - type = 10; - else - type = 0; - } - /* call */ - else if (size == 5) - type = 6; - /* calls */ - else if (size == 4) - type = 8; - /* jmp */ - else if (size == 3 && opcode->opcode == 0xcc0000) - type = 10; - /* bCC (uncommon cases) */ - else - type = 3; - - f = frag_var (rs_machine_dependent, 8, 8 - size, type, - fixups[0].exp.X_add_symbol, - fixups[0].exp.X_add_number, - (char *)fixups[0].opindex); - - /* This is pretty hokey. We basically just care about the - opcode, so we have to write out the first word big endian. - - The exception is "call", which has two operands that we - care about. - - The first operand (the register list) happens to be in the - first instruction word, and will be in the right place if - we output the first word in big endian mode. - - The second operand (stack size) is in the extension word, - and we want it to appear as the first character in the extension - word (as it appears in memory). Luckily, writing the extension - word in big endian format will do what we want. */ - number_to_chars_bigendian (f, insn, size > 4 ? 4 : size); - if (size > 8) - { - number_to_chars_bigendian (f + 4, extension, 4); - number_to_chars_bigendian (f + 8, 0, size - 8); - } - else if (size > 4) - number_to_chars_bigendian (f + 4, extension, size - 4); - } - else - { - /* Allocate space for the instruction. */ - f = frag_more (size); - - /* Fill in bytes for the instruction. Note that opcode fields - are written big-endian, 16 & 32bit immediates are written - little endian. Egad. */ - if (opcode->format == FMT_S0 - || opcode->format == FMT_S1 - || opcode->format == FMT_D0 - || opcode->format == FMT_D1) - { - number_to_chars_bigendian (f, insn, size); - } - else if (opcode->format == FMT_S2 - && opcode->opcode != 0xdf0000 - && opcode->opcode != 0xde0000) - { - /* A format S2 instruction that is _not_ "ret" and "retf". */ - number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1); - number_to_chars_littleendian (f + 1, insn & 0xffff, 2); - } - else if (opcode->format == FMT_S2) - { - /* This must be a ret or retf, which is written entirely in - big-endian format. */ - number_to_chars_bigendian (f, insn, 3); - } - else if (opcode->format == FMT_S4 - && opcode->opcode != 0xdc000000) - { - /* This must be a format S4 "call" instruction. What a pain. */ - unsigned long temp = (insn >> 8) & 0xffff; - number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); - number_to_chars_littleendian (f + 1, temp, 2); - number_to_chars_bigendian (f + 3, insn & 0xff, 1); - number_to_chars_bigendian (f + 4, extension & 0xff, 1); - } - else if (opcode->format == FMT_S4) - { - /* This must be a format S4 "jmp" instruction. */ - unsigned long temp = ((insn & 0xffffff) << 8) | (extension & 0xff); - number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); - number_to_chars_littleendian (f + 1, temp, 4); - } - else if (opcode->format == FMT_S6) - { - unsigned long temp = ((insn & 0xffffff) << 8) - | ((extension >> 16) & 0xff); - number_to_chars_bigendian (f, (insn >> 24) & 0xff, 1); - number_to_chars_littleendian (f + 1, temp, 4); - number_to_chars_bigendian (f + 5, (extension >> 8) & 0xff, 1); - number_to_chars_bigendian (f + 6, extension & 0xff, 1); - } - else if (opcode->format == FMT_D2 - && opcode->opcode != 0xfaf80000 - && opcode->opcode != 0xfaf00000 - && opcode->opcode != 0xfaf40000) - { - /* A format D2 instruction where the 16bit immediate is - really a single 16bit value, not two 8bit values. */ - number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); - number_to_chars_littleendian (f + 2, insn & 0xffff, 2); - } - else if (opcode->format == FMT_D2) - { - /* A format D2 instruction where the 16bit immediate - is really two 8bit immediates. */ - number_to_chars_bigendian (f, insn, 4); - } - else if (opcode->format == FMT_D4) - { - unsigned long temp = ((insn & 0xffff) << 16) | (extension & 0xffff); - number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); - number_to_chars_littleendian (f + 2, temp, 4); - } - else if (opcode->format == FMT_D5) - { - unsigned long temp = ((insn & 0xffff) << 16) - | ((extension >> 8) & 0xffff); - number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); - number_to_chars_littleendian (f + 2, temp, 4); - number_to_chars_bigendian (f + 6, extension & 0xff, 1); - } - - /* Create any fixups. */ - for (i = 0; i < fc; i++) - { - const struct mn10300_operand *operand; - - operand = &mn10300_operands[fixups[i].opindex]; - if (fixups[i].reloc != BFD_RELOC_UNUSED) - { - reloc_howto_type *reloc_howto; - int size; - int offset; - fixS *fixP; - - reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc); - - if (!reloc_howto) - abort(); - - size = bfd_get_reloc_size (reloc_howto); - - if (size < 1 || size > 4) - abort(); - - offset = 4 - size; - fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, - size, &fixups[i].exp, - reloc_howto->pc_relative, - fixups[i].reloc); - } - else - { - int reloc, pcrel, reloc_size, offset; - fixS *fixP; - - reloc = BFD_RELOC_NONE; - /* How big is the reloc? Remember SPLIT relocs are - implicitly 32bits. */ - if ((operand->flags & MN10300_OPERAND_SPLIT) != 0) - reloc_size = 32; - else - reloc_size = operand->bits; - - /* Is the reloc pc-relative? */ - pcrel = (operand->flags & MN10300_OPERAND_PCREL) != 0; - - /* Gross. This disgusting hack is to make sure we - get the right offset for the 16/32 bit reloc in - "call" instructions. Basically they're a pain - because the reloc isn't at the end of the instruction. */ - if ((size == 5 || size == 7) - && (((insn >> 24) & 0xff) == 0xcd - || ((insn >> 24) & 0xff) == 0xdd)) - size -= 2; - - /* Similarly for certain bit instructions which don't - hav their 32bit reloc at the tail of the instruction. */ - if (size == 7 - && (((insn >> 16) & 0xffff) == 0xfe00 - || ((insn >> 16) & 0xffff) == 0xfe01 - || ((insn >> 16) & 0xffff) == 0xfe02)) - size -= 1; - - offset = size - reloc_size / 8; - - /* Choose a proper BFD relocation type. */ - if (pcrel) - { - if (reloc_size == 32) - reloc = BFD_RELOC_32_PCREL; - else if (reloc_size == 16) - reloc = BFD_RELOC_16_PCREL; - else if (reloc_size == 8) - reloc = BFD_RELOC_8_PCREL; - else - abort (); - } - else - { - if (reloc_size == 32) - reloc = BFD_RELOC_32; - else if (reloc_size == 16) - reloc = BFD_RELOC_16; - else if (reloc_size == 8) - reloc = BFD_RELOC_8; - else - abort (); - } - - /* Convert the size of the reloc into what fix_new_exp wants. */ - reloc_size = reloc_size / 8; - if (reloc_size == 8) - reloc_size = 0; - else if (reloc_size == 16) - reloc_size = 1; - else if (reloc_size == 32) - reloc_size = 2; - - fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, - reloc_size, &fixups[i].exp, pcrel, - ((bfd_reloc_code_real_type) reloc)); - - if (pcrel) - fixP->fx_offset += offset; - } - } - } -} - - -/* if while processing a fixup, a reloc really needs to be created */ -/* then it is done here */ - -arelent * -tc_gen_reloc (seg, fixp) - asection *seg; - fixS *fixp; -{ - arelent *reloc; - reloc = (arelent *) xmalloc (sizeof (arelent)); - - reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); - if (reloc->howto == (reloc_howto_type *) NULL) - { - as_bad_where (fixp->fx_file, fixp->fx_line, - _("reloc %d not supported by object file format"), - (int)fixp->fx_r_type); - return NULL; - } - reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; - - if (fixp->fx_addsy && fixp->fx_subsy) - { - - if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy)) - || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section) - { - as_bad_where (fixp->fx_file, fixp->fx_line, - "Difference of symbols in different sections is not supported"); - return NULL; - } - - reloc->sym_ptr_ptr = &bfd_abs_symbol; - reloc->addend = (S_GET_VALUE (fixp->fx_addsy) - - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); - } - else - { - reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym; - reloc->addend = fixp->fx_offset; - } - return reloc; -} - -int -md_estimate_size_before_relax (fragp, seg) - fragS *fragp; - asection *seg; -{ - if (fragp->fr_subtype == 0) - return 2; - if (fragp->fr_subtype == 3) - return 3; - if (fragp->fr_subtype == 6) - { - if (!S_IS_DEFINED (fragp->fr_symbol) - || seg != S_GET_SEGMENT (fragp->fr_symbol)) - { - fragp->fr_subtype = 7; - return 7; - } - else - return 5; - } - if (fragp->fr_subtype == 8) - { - if (!S_IS_DEFINED (fragp->fr_symbol) - || seg != S_GET_SEGMENT (fragp->fr_symbol)) - { - fragp->fr_subtype = 9; - return 6; - } - else - return 4; - } - if (fragp->fr_subtype == 10) - { - if (!S_IS_DEFINED (fragp->fr_symbol) - || seg != S_GET_SEGMENT (fragp->fr_symbol)) - { - fragp->fr_subtype = 12; - return 5; - } - else - return 2; - } -} - -long -md_pcrel_from (fixp) - fixS *fixp; -{ - return fixp->fx_frag->fr_address; -#if 0 - if (fixp->fx_addsy != (symbolS *) NULL && ! S_IS_DEFINED (fixp->fx_addsy)) - { - /* The symbol is undefined. Let the linker figure it out. */ - return 0; - } - return fixp->fx_frag->fr_address + fixp->fx_where; -#endif -} - -int -md_apply_fix3 (fixp, valuep, seg) - fixS *fixp; - valueT *valuep; - segT seg; -{ - /* We shouldn't ever get here because linkrelax is nonzero. */ - abort (); - fixp->fx_done = 1; - return 0; -} - -/* Insert an operand value into an instruction. */ - -static void -mn10300_insert_operand (insnp, extensionp, operand, val, file, line, shift) - unsigned long *insnp; - unsigned long *extensionp; - const struct mn10300_operand *operand; - offsetT val; - char *file; - unsigned int line; - unsigned int shift; -{ - /* No need to check 32bit operands for a bit. Note that - MN10300_OPERAND_SPLIT is an implicit 32bit operand. */ - if (operand->bits != 32 - && (operand->flags & MN10300_OPERAND_SPLIT) == 0) - { - long min, max; - offsetT test; - int bits; - - bits = operand->bits; - - if ((operand->flags & MN10300_OPERAND_SIGNED) != 0) - { - max = (1 << (bits - 1)) - 1; - min = - (1 << (bits - 1)); - } - else - { - max = (1 << bits) - 1; - min = 0; - } - - test = val; - - - if (test < (offsetT) min || test > (offsetT) max) - { - const char *err = - _("operand out of range (%s not between %ld and %ld)"); - char buf[100]; - - sprint_value (buf, test); - if (file == (char *) NULL) - as_warn (err, buf, min, max); - else - as_warn_where (file, line, err, buf, min, max); - } - } - - if ((operand->flags & MN10300_OPERAND_SPLIT) != 0) - { - *insnp |= (val >> (32 - operand->bits)) & ((1 << operand->bits) - 1); - *extensionp |= ((val & ((1 << (32 - operand->bits)) - 1)) - << operand->shift); - } - else if ((operand->flags & MN10300_OPERAND_EXTENDED) == 0) - { - *insnp |= (((long) val & ((1 << operand->bits) - 1)) - << (operand->shift + shift)); - - if ((operand->flags & MN10300_OPERAND_REPEATED) != 0) - *insnp |= (((long) val & ((1 << operand->bits) - 1)) - << (operand->shift + shift + operand->bits)); - } - else - { - *extensionp |= (((long) val & ((1 << operand->bits) - 1)) - << (operand->shift + shift)); - - if ((operand->flags & MN10300_OPERAND_REPEATED) != 0) - *extensionp |= (((long) val & ((1 << operand->bits) - 1)) - << (operand->shift + shift + operand->bits)); - } -} - -static unsigned long -check_operand (insn, operand, val) - unsigned long insn; - const struct mn10300_operand *operand; - offsetT val; -{ - /* No need to check 32bit operands for a bit. Note that - MN10300_OPERAND_SPLIT is an implicit 32bit operand. */ - if (operand->bits != 32 - && (operand->flags & MN10300_OPERAND_SPLIT) == 0) - { - long min, max; - offsetT test; - int bits; - - bits = operand->bits; - - if ((operand->flags & MN10300_OPERAND_SIGNED) != 0) - { - max = (1 << (bits - 1)) - 1; - min = - (1 << (bits - 1)); - } - else - { - max = (1 << bits) - 1; - min = 0; - } - - test = val; - - - if (test < (offsetT) min || test > (offsetT) max) - return 0; - else - return 1; - } - return 1; -} - -static void -set_arch_mach (mach) - int mach; -{ - if (!bfd_set_arch_mach (stdoutput, bfd_arch_mn10300, mach)) - as_warn (_("could not set architecture and machine")); - - current_machine = mach; -} |