diff options
Diffstat (limited to 'binutils-2.24/gas/config/tc-pdp11.c')
| -rw-r--r-- | binutils-2.24/gas/config/tc-pdp11.c | 1454 |
1 files changed, 0 insertions, 1454 deletions
diff --git a/binutils-2.24/gas/config/tc-pdp11.c b/binutils-2.24/gas/config/tc-pdp11.c deleted file mode 100644 index 98e241f6..00000000 --- a/binutils-2.24/gas/config/tc-pdp11.c +++ /dev/null @@ -1,1454 +0,0 @@ -/* tc-pdp11.c - pdp11-specific - - Copyright 2001, 2002, 2004, 2005, 2007, 2009 - 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. */ - -#include "as.h" -#include "safe-ctype.h" -#include "opcode/pdp11.h" - -extern int flonum_gen2vax (int, FLONUM_TYPE * f, LITTLENUM_TYPE *); - -#define TRUE 1 -#define FALSE 0 - -/* A representation for PDP-11 machine code. */ -struct pdp11_code -{ - char *error; - int code; - int additional; /* Is there an additional word? */ - int word; /* Additional word, if any. */ - struct - { - bfd_reloc_code_real_type type; - expressionS exp; - int pc_rel; - } reloc; -}; - -/* Instruction set extensions. - - If you change this from an array to something else, please update - the "PDP-11 instruction set extensions" comment in pdp11.h. */ -int pdp11_extension[PDP11_EXT_NUM]; - -/* Assembly options. */ - -#define ASM_OPT_PIC 1 -#define ASM_OPT_NUM 2 - -int asm_option[ASM_OPT_NUM]; - -/* These chars start a comment anywhere in a source file (except inside - another comment. */ -const char comment_chars[] = "#/"; - -/* These chars only start a comment at the beginning of a line. */ -const char line_comment_chars[] = "#/"; - -const char line_separator_chars[] = ";"; - -/* Chars that can be used to separate mant from exp in floating point nums. */ -const char EXP_CHARS[] = "eE"; - -/* Chars that mean this number is a floating point constant. */ -/* as in 0f123.456. */ -/* or 0H1.234E-12 (see exp chars above). */ -const char FLT_CHARS[] = "dDfF"; - -void pseudo_even (int); -void pseudo_bss (int); - -const pseudo_typeS md_pseudo_table[] = -{ - { "bss", pseudo_bss, 0 }, - { "even", pseudo_even, 0 }, - { 0, 0, 0 }, -}; - -static struct hash_control *insn_hash = NULL; - -static int -set_option (char *arg) -{ - int yes = 1; - - if (strcmp (arg, "all-extensions") == 0 - || strcmp (arg, "all") == 0) - { - memset (pdp11_extension, ~0, sizeof pdp11_extension); - pdp11_extension[PDP11_NONE] = 0; - return 1; - } - else if (strcmp (arg, "no-extensions") == 0) - { - memset (pdp11_extension, 0, sizeof pdp11_extension); - pdp11_extension[PDP11_BASIC] = 1; - return 1; - } - - if (strncmp (arg, "no-", 3) == 0) - { - yes = 0; - arg += 3; - } - - /* Commersial instructions. */ - if (strcmp (arg, "cis") == 0) - pdp11_extension[PDP11_CIS] = yes; - /* Call supervisor mode. */ - else if (strcmp (arg, "csm") == 0) - pdp11_extension[PDP11_CSM] = yes; - /* Extended instruction set. */ - else if (strcmp (arg, "eis") == 0) - pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes; - /* KEV11 floating-point. */ - else if (strcmp (arg, "fis") == 0 - || strcmp (arg, "kev11") == 0 - || strcmp (arg, "kev-11") == 0) - pdp11_extension[PDP11_FIS] = yes; - /* FP-11 floating-point. */ - else if (strcmp (arg, "fpp") == 0 - || strcmp (arg, "fpu") == 0 - || strcmp (arg, "fp11") == 0 - || strcmp (arg, "fp-11") == 0 - || strcmp (arg, "fpj11") == 0 - || strcmp (arg, "fp-j11") == 0 - || strcmp (arg, "fpj-11") == 0) - pdp11_extension[PDP11_FPP] = yes; - /* Limited extended insns. */ - else if (strcmp (arg, "limited-eis") == 0) - { - pdp11_extension[PDP11_LEIS] = yes; - if (!pdp11_extension[PDP11_LEIS]) - pdp11_extension[PDP11_EIS] = 0; - } - /* Move from processor type. */ - else if (strcmp (arg, "mfpt") == 0) - pdp11_extension[PDP11_MFPT] = yes; - /* Multiprocessor insns: */ - else if (strncmp (arg, "mproc", 5) == 0 - /* TSTSET, WRTLCK */ - || strncmp (arg, "multiproc", 9) == 0) - pdp11_extension[PDP11_MPROC] = yes; - /* Move from/to proc status. */ - else if (strcmp (arg, "mxps") == 0) - pdp11_extension[PDP11_MXPS] = yes; - /* Position-independent code. */ - else if (strcmp (arg, "pic") == 0) - asm_option[ASM_OPT_PIC] = yes; - /* Set priority level. */ - else if (strcmp (arg, "spl") == 0) - pdp11_extension[PDP11_SPL] = yes; - /* Microcode instructions: */ - else if (strcmp (arg, "ucode") == 0 - /* LDUB, MED, XFC */ - || strcmp (arg, "microcode") == 0) - pdp11_extension[PDP11_UCODE] = yes; - else - return 0; - - return 1; -} - - -static void -init_defaults (void) -{ - static int first = 1; - - if (first) - { - set_option ("all-extensions"); - set_option ("pic"); - first = 0; - } -} - -void -md_begin (void) -{ - int i; - - init_defaults (); - - insn_hash = hash_new (); - if (insn_hash == NULL) - as_fatal (_("Virtual memory exhausted")); - - for (i = 0; i < pdp11_num_opcodes; i++) - hash_insert (insn_hash, pdp11_opcodes[i].name, (void *) (pdp11_opcodes + i)); - for (i = 0; i < pdp11_num_aliases; i++) - hash_insert (insn_hash, pdp11_aliases[i].name, (void *) (pdp11_aliases + i)); -} - -void -md_number_to_chars (char con[], valueT value, int nbytes) -{ - /* On a PDP-11, 0x1234 is stored as "\x12\x34", and - 0x12345678 is stored as "\x56\x78\x12\x34". It's - anyones guess what 0x123456 would be stored like. */ - - switch (nbytes) - { - case 0: - break; - case 1: - con[0] = value & 0xff; - break; - case 2: - con[0] = value & 0xff; - con[1] = (value >> 8) & 0xff; - break; - case 4: - con[0] = (value >> 16) & 0xff; - con[1] = (value >> 24) & 0xff; - con[2] = value & 0xff; - con[3] = (value >> 8) & 0xff; - break; - default: - BAD_CASE (nbytes); - } -} - -/* Fix up some data or instructions after we find out the value of a symbol - that they reference. Knows about order of bytes in address. */ - -void -md_apply_fix (fixS *fixP, - valueT * valP, - segT seg ATTRIBUTE_UNUSED) -{ - valueT code; - valueT mask; - valueT val = * valP; - char *buf; - int shift; - int size; - - buf = fixP->fx_where + fixP->fx_frag->fr_literal; - size = fixP->fx_size; - code = md_chars_to_number ((unsigned char *) buf, size); - - switch (fixP->fx_r_type) - { - case BFD_RELOC_16: - case BFD_RELOC_16_PCREL: - mask = 0xffff; - shift = 0; - break; - case BFD_RELOC_PDP11_DISP_8_PCREL: - mask = 0x00ff; - shift = 1; - break; - case BFD_RELOC_PDP11_DISP_6_PCREL: - mask = 0x003f; - shift = 1; - val = -val; - break; - default: - BAD_CASE (fixP->fx_r_type); - } - - if (fixP->fx_addsy != NULL) - val += symbol_get_bfdsym (fixP->fx_addsy)->section->vma; - /* *value += fixP->fx_addsy->bsym->section->vma; */ - - code &= ~mask; - code |= (val >> shift) & mask; - number_to_chars_littleendian (buf, code, size); - - if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -} - -long -md_chars_to_number (con, nbytes) - unsigned char con[]; /* Low order byte 1st. */ - int nbytes; /* Number of bytes in the input. */ -{ - /* On a PDP-11, 0x1234 is stored as "\x12\x34", and - 0x12345678 is stored as "\x56\x78\x12\x34". It's - anyones guess what 0x123456 would be stored like. */ - switch (nbytes) - { - case 0: - return 0; - case 1: - return con[0]; - case 2: - return (con[1] << BITS_PER_CHAR) | con[0]; - case 4: - return - (((con[1] << BITS_PER_CHAR) | con[0]) << (2 * BITS_PER_CHAR)) - |((con[3] << BITS_PER_CHAR) | con[2]); - default: - BAD_CASE (nbytes); - return 0; - } -} - -static char * -skip_whitespace (char *str) -{ - while (*str == ' ' || *str == '\t') - str++; - return str; -} - -static char * -find_whitespace (char *str) -{ - while (*str != ' ' && *str != '\t' && *str != 0) - str++; - return str; -} - -static char * -parse_reg (char *str, struct pdp11_code *operand) -{ - str = skip_whitespace (str); - if (TOLOWER (*str) == 'r') - { - str++; - switch (*str) - { - case '0': case '1': case '2': case '3': - case '4': case '5': case '6': case '7': - operand->code = *str - '0'; - str++; - break; - default: - operand->error = _("Bad register name"); - return str - 1; - } - } - else if (strncmp (str, "sp", 2) == 0 - || strncmp (str, "SP", 2) == 0) - { - operand->code = 6; - str += 2; - } - else if (strncmp (str, "pc", 2) == 0 - || strncmp (str, "PC", 2) == 0) - { - operand->code = 7; - str += 2; - } - else - { - operand->error = _("Bad register name"); - return str; - } - - return str; -} - -static char * -parse_ac5 (char *str, struct pdp11_code *operand) -{ - str = skip_whitespace (str); - if (strncmp (str, "fr", 2) == 0 - || strncmp (str, "FR", 2) == 0 - || strncmp (str, "ac", 2) == 0 - || strncmp (str, "AC", 2) == 0) - { - str += 2; - switch (*str) - { - case '0': case '1': case '2': case '3': - case '4': case '5': - operand->code = *str - '0'; - str++; - break; - default: - operand->error = _("Bad register name"); - return str - 2; - } - } - else - { - operand->error = _("Bad register name"); - return str; - } - - return str; -} - -static char * -parse_ac (char *str, struct pdp11_code *operand) -{ - str = parse_ac5 (str, operand); - if (!operand->error && operand->code > 3) - { - operand->error = _("Bad register name"); - return str - 3; - } - - return str; -} - -static char * -parse_expression (char *str, struct pdp11_code *operand) -{ - char *save_input_line_pointer; - segT seg; - - save_input_line_pointer = input_line_pointer; - input_line_pointer = str; - seg = expression (&operand->reloc.exp); - if (seg == NULL) - { - input_line_pointer = save_input_line_pointer; - operand->error = _("Error in expression"); - return str; - } - - str = input_line_pointer; - input_line_pointer = save_input_line_pointer; - - operand->reloc.pc_rel = 0; - - return str; -} - -static char * -parse_op_no_deferred (char *str, struct pdp11_code *operand) -{ - LITTLENUM_TYPE literal_float[2]; - - str = skip_whitespace (str); - - switch (*str) - { - case '(': /* (rn) and (rn)+ */ - str = parse_reg (str + 1, operand); - if (operand->error) - return str; - str = skip_whitespace (str); - if (*str != ')') - { - operand->error = _("Missing ')'"); - return str; - } - str++; - if (*str == '+') - { - operand->code |= 020; - str++; - } - else - { - operand->code |= 010; - } - break; - - /* Immediate. */ - case '#': - case '$': - str = parse_expression (str + 1, operand); - if (operand->error) - return str; - operand->additional = TRUE; - operand->word = operand->reloc.exp.X_add_number; - switch (operand->reloc.exp.X_op) - { - case O_constant: - break; - case O_symbol: - case O_add: - case O_subtract: - operand->reloc.type = BFD_RELOC_16; - operand->reloc.pc_rel = 0; - break; - case O_big: - if (operand->reloc.exp.X_add_number > 0) - { - operand->error = _("Error in expression"); - break; - } - /* It's a floating literal... */ - know (operand->reloc.exp.X_add_number < 0); - flonum_gen2vax ('f', &generic_floating_point_number, literal_float); - operand->word = literal_float[0]; - if (literal_float[1] != 0) - as_warn (_("Low order bits truncated in immediate float operand")); - break; - default: - operand->error = _("Error in expression"); - break; - } - operand->code = 027; - break; - - /* label, d(rn), -(rn) */ - default: - { - if (strncmp (str, "-(", 2) == 0) /* -(rn) */ - { - str = parse_reg (str + 2, operand); - if (operand->error) - return str; - str = skip_whitespace (str); - if (*str != ')') - { - operand->error = _("Missing ')'"); - return str; - } - operand->code |= 040; - str++; - break; - } - - str = parse_expression (str, operand); - if (operand->error) - return str; - - str = skip_whitespace (str); - - if (*str != '(') - { - operand->code = 067; - operand->additional = 1; - operand->word = 0; - operand->reloc.type = BFD_RELOC_16_PCREL; - operand->reloc.pc_rel = 1; - break; - } - - /* d(rn) */ - str++; - str = parse_reg (str, operand); - if (operand->error) - return str; - - str = skip_whitespace (str); - - if (*str != ')') - { - operand->error = _("Missing ')'"); - return str; - } - - str++; - operand->additional = TRUE; - operand->code |= 060; - switch (operand->reloc.exp.X_op) - { - case O_symbol: - operand->reloc.type = BFD_RELOC_16; - operand->reloc.pc_rel = 0; - break; - case O_constant: - if ((operand->code & 7) == 7) - { - operand->reloc.pc_rel = 1; - operand->word = operand->reloc.exp.X_add_number; - } - else - operand->word = operand->reloc.exp.X_add_number; - - break; - default: - BAD_CASE (operand->reloc.exp.X_op); - } - break; - } - } - - return str; -} - -static char * -parse_op_noreg (char *str, struct pdp11_code *operand) -{ - str = skip_whitespace (str); - operand->error = NULL; - - if (*str == '@' || *str == '*') - { - str = parse_op_no_deferred (str + 1, operand); - if (operand->error) - return str; - operand->code |= 010; - } - else - str = parse_op_no_deferred (str, operand); - - return str; -} - -static char * -parse_op (char *str, struct pdp11_code *operand) -{ - str = skip_whitespace (str); - - str = parse_reg (str, operand); - if (!operand->error) - return str; - - operand->error = NULL; - parse_ac5 (str, operand); - if (!operand->error) - { - operand->error = _("Float AC not legal as integer operand"); - return str; - } - - return parse_op_noreg (str, operand); -} - -static char * -parse_fop (char *str, struct pdp11_code *operand) -{ - str = skip_whitespace (str); - - str = parse_ac5 (str, operand); - if (!operand->error) - return str; - - operand->error = NULL; - parse_reg (str, operand); - if (!operand->error) - { - operand->error = _("General register not legal as float operand"); - return str; - } - - return parse_op_noreg (str, operand); -} - -static char * -parse_separator (char *str, int *error) -{ - str = skip_whitespace (str); - *error = (*str != ','); - if (!*error) - str++; - return str; -} - -void -md_assemble (char *instruction_string) -{ - const struct pdp11_opcode *op; - struct pdp11_code insn, op1, op2; - int error; - int size; - char *err = NULL; - char *str; - char *p; - char c; - - str = skip_whitespace (instruction_string); - p = find_whitespace (str); - if (p - str == 0) - { - as_bad (_("No instruction found")); - return; - } - - c = *p; - *p = '\0'; - op = (struct pdp11_opcode *)hash_find (insn_hash, str); - *p = c; - if (op == 0) - { - as_bad (_("Unknown instruction '%s'"), str); - return; - } - - if (!pdp11_extension[op->extension]) - { - as_warn (_("Unsupported instruction set extension: %s"), op->name); - return; - } - - insn.error = NULL; - insn.code = op->opcode; - insn.reloc.type = BFD_RELOC_NONE; - op1.error = NULL; - op1.additional = FALSE; - op1.reloc.type = BFD_RELOC_NONE; - op2.error = NULL; - op2.additional = FALSE; - op2.reloc.type = BFD_RELOC_NONE; - - str = p; - size = 2; - - switch (op->type) - { - case PDP11_OPCODE_NO_OPS: - str = skip_whitespace (str); - if (*str == 0) - str = ""; - break; - - case PDP11_OPCODE_IMM3: - case PDP11_OPCODE_IMM6: - case PDP11_OPCODE_IMM8: - str = skip_whitespace (str); - if (*str == '#' || *str == '$') - str++; - str = parse_expression (str, &op1); - if (op1.error) - break; - if (op1.reloc.exp.X_op != O_constant || op1.reloc.type != BFD_RELOC_NONE) - { - op1.error = _("operand is not an absolute constant"); - break; - } - switch (op->type) - { - case PDP11_OPCODE_IMM3: - if (op1.reloc.exp.X_add_number & ~7) - { - op1.error = _("3-bit immediate out of range"); - break; - } - break; - case PDP11_OPCODE_IMM6: - if (op1.reloc.exp.X_add_number & ~0x3f) - { - op1.error = _("6-bit immediate out of range"); - break; - } - break; - case PDP11_OPCODE_IMM8: - if (op1.reloc.exp.X_add_number & ~0xff) - { - op1.error = _("8-bit immediate out of range"); - break; - } - break; - } - insn.code |= op1.reloc.exp.X_add_number; - break; - - case PDP11_OPCODE_DISPL: - { - char *new_pointer; - new_pointer = parse_expression (str, &op1); - op1.code = 0; - op1.reloc.pc_rel = 1; - op1.reloc.type = BFD_RELOC_PDP11_DISP_8_PCREL; - if (op1.reloc.exp.X_op != O_symbol) - { - op1.error = _("Symbol expected"); - break; - } - if (op1.code & ~0xff) - { - err = _("8-bit displacement out of range"); - break; - } - str = new_pointer; - insn.code |= op1.code; - insn.reloc = op1.reloc; - } - break; - - case PDP11_OPCODE_REG: - str = parse_reg (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - break; - - case PDP11_OPCODE_OP: - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - break; - - case PDP11_OPCODE_FOP: - str = parse_fop (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - break; - - case PDP11_OPCODE_REG_OP: - str = parse_reg (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - str = parse_separator (str, &error); - if (error) - { - op2.error = _("Missing ','"); - break; - } - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - break; - - case PDP11_OPCODE_REG_OP_REV: - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - str = parse_separator (str, &error); - if (error) - { - op2.error = _("Missing ','"); - break; - } - str = parse_reg (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - break; - - case PDP11_OPCODE_AC_FOP: - str = parse_ac (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - str = parse_separator (str, &error); - if (error) - { - op1.error = _("Missing ','"); - break; - } - str = parse_fop (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - break; - - case PDP11_OPCODE_FOP_AC: - str = parse_fop (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - str = parse_separator (str, &error); - if (error) - { - op1.error = _("Missing ','"); - break; - } - str = parse_ac (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - break; - - case PDP11_OPCODE_AC_OP: - str = parse_ac (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - str = parse_separator (str, &error); - if (error) - { - op1.error = _("Missing ','"); - break; - } - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - break; - - case PDP11_OPCODE_OP_AC: - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code; - if (op1.additional) - size += 2; - str = parse_separator (str, &error); - if (error) - { - op1.error = _("Missing ','"); - break; - } - str = parse_ac (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - break; - - case PDP11_OPCODE_OP_OP: - str = parse_op (str, &op1); - if (op1.error) - break; - insn.code |= op1.code << 6; - if (op1.additional) - size += 2; - str = parse_separator (str, &error); - if (error) - { - op2.error = _("Missing ','"); - break; - } - str = parse_op (str, &op2); - if (op2.error) - break; - insn.code |= op2.code; - if (op2.additional) - size += 2; - break; - - case PDP11_OPCODE_REG_DISPL: - { - char *new_pointer; - str = parse_reg (str, &op2); - if (op2.error) - break; - insn.code |= op2.code << 6; - str = parse_separator (str, &error); - if (error) - { - op1.error = _("Missing ','"); - break; - } - new_pointer = parse_expression (str, &op1); - op1.code = 0; - op1.reloc.pc_rel = 1; - op1.reloc.type = BFD_RELOC_PDP11_DISP_6_PCREL; - if (op1.reloc.exp.X_op != O_symbol) - { - op1.error = _("Symbol expected"); - break; - } - if (op1.code & ~0x3f) - { - err = _("6-bit displacement out of range"); - break; - } - str = new_pointer; - insn.code |= op1.code; - insn.reloc = op1.reloc; - } - break; - - default: - BAD_CASE (op->type); - } - - if (op1.error) - err = op1.error; - else if (op2.error) - err = op2.error; - else - { - str = skip_whitespace (str); - if (*str) - err = _("Too many operands"); - } - - { - char *to = NULL; - - if (err) - { - as_bad ("%s", err); - return; - } - - to = frag_more (size); - - md_number_to_chars (to, insn.code, 2); - if (insn.reloc.type != BFD_RELOC_NONE) - fix_new_exp (frag_now, to - frag_now->fr_literal, 2, - &insn.reloc.exp, insn.reloc.pc_rel, insn.reloc.type); - to += 2; - - if (op1.additional) - { - md_number_to_chars (to, op1.word, 2); - if (op1.reloc.type != BFD_RELOC_NONE) - fix_new_exp (frag_now, to - frag_now->fr_literal, 2, - &op1.reloc.exp, op1.reloc.pc_rel, op1.reloc.type); - to += 2; - } - - if (op2.additional) - { - md_number_to_chars (to, op2.word, 2); - if (op2.reloc.type != BFD_RELOC_NONE) - fix_new_exp (frag_now, to - frag_now->fr_literal, 2, - &op2.reloc.exp, op2.reloc.pc_rel, op2.reloc.type); - } - } -} - -int -md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, - segT segment ATTRIBUTE_UNUSED) -{ - return 0; -} - -void -md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, - segT seg ATTRIBUTE_UNUSED, - fragS *fragP ATTRIBUTE_UNUSED) -{ -} - -int md_short_jump_size = 2; -int md_long_jump_size = 4; - -void -md_create_short_jump (char *ptr ATTRIBUTE_UNUSED, - addressT from_addr ATTRIBUTE_UNUSED, - addressT to_addr ATTRIBUTE_UNUSED, - fragS *frag ATTRIBUTE_UNUSED, - symbolS *to_symbol ATTRIBUTE_UNUSED) -{ -} - -void -md_create_long_jump (char *ptr ATTRIBUTE_UNUSED, - addressT from_addr ATTRIBUTE_UNUSED, - addressT to_addr ATTRIBUTE_UNUSED, - fragS *frag ATTRIBUTE_UNUSED, - symbolS *to_symbol ATTRIBUTE_UNUSED) -{ -} - -static int -set_cpu_model (char *arg) -{ - char buf[4]; - char *model = buf; - - if (arg[0] == 'k') - arg++; - - *model++ = *arg++; - - if (strchr ("abdx", model[-1]) == NULL) - return 0; - - if (model[-1] == 'd') - { - if (arg[0] == 'f' || arg[0] == 'j') - model[-1] = *arg++; - } - else if (model[-1] == 'x') - { - if (arg[0] == 't') - model[-1] = *arg++; - } - - if (arg[0] == '-') - arg++; - - if (strncmp (arg, "11", 2) != 0) - return 0; - arg += 2; - - if (arg[0] == '-') - { - if (*++arg == 0) - return 0; - } - - /* Allow up to two revision letters. */ - if (arg[0] != 0) - *model++ = *arg++; - if (arg[0] != 0) - *model++ = *arg++; - - *model++ = 0; - - set_option ("no-extensions"); - - /* KA11 (11/15/20). */ - if (strncmp (buf, "a", 1) == 0) - return 1; /* No extensions. */ - - /* KB11 (11/45/50/55/70). */ - else if (strncmp (buf, "b", 1) == 0) - return set_option ("eis") && set_option ("spl"); - - /* KD11-A (11/35/40). */ - else if (strncmp (buf, "da", 2) == 0) - return set_option ("limited-eis"); - - /* KD11-B (11/05/10). */ - else if (strncmp (buf, "db", 2) == 0 - /* KD11-D (11/04). */ - || strncmp (buf, "dd", 2) == 0) - return 1; /* no extensions */ - - /* KD11-E (11/34). */ - else if (strncmp (buf, "de", 2) == 0) - return set_option ("eis") && set_option ("mxps"); - - /* KD11-F (11/03). */ - else if (strncmp (buf, "df", 2) == 0 - /* KD11-H (11/03). */ - || strncmp (buf, "dh", 2) == 0 - /* KD11-Q (11/03). */ - || strncmp (buf, "dq", 2) == 0) - return set_option ("limited-eis") && set_option ("mxps"); - - /* KD11-K (11/60). */ - else if (strncmp (buf, "dk", 2) == 0) - return set_option ("eis") - && set_option ("mxps") - && set_option ("ucode"); - - /* KD11-Z (11/44). */ - else if (strncmp (buf, "dz", 2) == 0) - return set_option ("csm") - && set_option ("eis") - && set_option ("mfpt") - && set_option ("mxps") - && set_option ("spl"); - - /* F11 (11/23/24). */ - else if (strncmp (buf, "f", 1) == 0) - return set_option ("eis") - && set_option ("mfpt") - && set_option ("mxps"); - - /* J11 (11/53/73/83/84/93/94). */ - else if (strncmp (buf, "j", 1) == 0) - return set_option ("csm") - && set_option ("eis") - && set_option ("mfpt") - && set_option ("multiproc") - && set_option ("mxps") - && set_option ("spl"); - - /* T11 (11/21). */ - else if (strncmp (buf, "t", 1) == 0) - return set_option ("limited-eis") - && set_option ("mxps"); - - else - return 0; -} - -static int -set_machine_model (char *arg) -{ - if (strncmp (arg, "pdp-11/", 7) != 0 - && strncmp (arg, "pdp11/", 6) != 0 - && strncmp (arg, "11/", 3) != 0) - return 0; - - if (strncmp (arg, "pdp", 3) == 0) - arg += 3; - if (arg[0] == '-') - arg++; - if (strncmp (arg, "11/", 3) == 0) - arg += 3; - - if (strcmp (arg, "03") == 0) - return set_cpu_model ("kd11f"); - - else if (strcmp (arg, "04") == 0) - return set_cpu_model ("kd11d"); - - else if (strcmp (arg, "05") == 0 - || strcmp (arg, "10") == 0) - return set_cpu_model ("kd11b"); - - else if (strcmp (arg, "15") == 0 - || strcmp (arg, "20") == 0) - return set_cpu_model ("ka11"); - - else if (strcmp (arg, "21") == 0) - return set_cpu_model ("t11"); - - else if (strcmp (arg, "23") == 0 - || strcmp (arg, "24") == 0) - return set_cpu_model ("f11"); - - else if (strcmp (arg, "34") == 0 - || strcmp (arg, "34a") == 0) - return set_cpu_model ("kd11e"); - - else if (strcmp (arg, "35") == 0 - || strcmp (arg, "40") == 0) - return set_cpu_model ("kd11da"); - - else if (strcmp (arg, "44") == 0) - return set_cpu_model ("kd11dz"); - - else if (strcmp (arg, "45") == 0 - || strcmp (arg, "50") == 0 - || strcmp (arg, "55") == 0 - || strcmp (arg, "70") == 0) - return set_cpu_model ("kb11"); - - else if (strcmp (arg, "60") == 0) - return set_cpu_model ("kd11k"); - - else if (strcmp (arg, "53") == 0 - || strcmp (arg, "73") == 0 - || strcmp (arg, "83") == 0 - || strcmp (arg, "84") == 0 - || strcmp (arg, "93") == 0 - || strcmp (arg, "94") == 0) - return set_cpu_model ("j11") - && set_option ("fpp"); - - else - return 0; -} - -const char *md_shortopts = "m:"; - -struct option md_longopts[] = -{ -#define OPTION_CPU 257 - { "cpu", required_argument, NULL, OPTION_CPU }, -#define OPTION_MACHINE 258 - { "machine", required_argument, NULL, OPTION_MACHINE }, -#define OPTION_PIC 259 - { "pic", no_argument, NULL, OPTION_PIC }, - { NULL, no_argument, NULL, 0 } -}; - -size_t md_longopts_size = sizeof (md_longopts); - -/* Invocation line includes a switch not recognized by the base assembler. - See if it's a processor-specific option. */ - -int -md_parse_option (int c, char *arg) -{ - init_defaults (); - - switch (c) - { - case 'm': - if (set_option (arg)) - return 1; - if (set_cpu_model (arg)) - return 1; - if (set_machine_model (arg)) - return 1; - break; - - case OPTION_CPU: - if (set_cpu_model (arg)) - return 1; - break; - - case OPTION_MACHINE: - if (set_machine_model (arg)) - return 1; - break; - - case OPTION_PIC: - if (set_option ("pic")) - return 1; - break; - - default: - break; - } - - return 0; -} - -void -md_show_usage (FILE *stream) -{ - fprintf (stream, "\ -\n\ -PDP-11 instruction set extentions:\n\ -\n\ --m(no-)cis allow (disallow) commersial instruction set\n\ --m(no-)csm allow (disallow) CSM instruction\n\ --m(no-)eis allow (disallow) full extended instruction set\n\ --m(no-)fis allow (disallow) KEV11 floating-point instructions\n\ --m(no-)fpp allow (disallow) FP-11 floating-point instructions\n\ --m(no-)fpu allow (disallow) FP-11 floating-point instructions\n\ --m(no-)limited-eis allow (disallow) limited extended instruction set\n\ --m(no-)mfpt allow (disallow) processor type instruction\n\ --m(no-)multiproc allow (disallow) multiprocessor instructions\n\ --m(no-)mxps allow (disallow) processor status instructions\n\ --m(no-)spl allow (disallow) SPL instruction\n\ --m(no-)ucode allow (disallow) microcode instructions\n\ --mall-extensions allow all instruction set extensions\n\ - (this is the default)\n\ --mno-extentions disallow all instruction set extensions\n\ --pic generate position-indepenent code\n\ -\n\ -PDP-11 CPU model options:\n\ -\n\ --mka11* KA11 CPU. base line instruction set only\n\ --mkb11* KB11 CPU. enable full EIS and SPL\n\ --mkd11a* KD11-A CPU. enable limited EIS\n\ --mkd11b* KD11-B CPU. base line instruction set only\n\ --mkd11d* KD11-D CPU. base line instruction set only\n\ --mkd11e* KD11-E CPU. enable full EIS, MTPS, and MFPS\n\ --mkd11f* KD11-F CPU. enable limited EIS, MTPS, and MFPS\n\ --mkd11h* KD11-H CPU. enable limited EIS, MTPS, and MFPS\n\ --mkd11q* KD11-Q CPU. enable limited EIS, MTPS, and MFPS\n\ --mkd11k* KD11-K CPU. enable full EIS, MTPS, MFPS, LDUB, MED,\n\ - XFC, and MFPT\n\ --mkd11z* KD11-Z CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\ - and CSM\n\ --mf11* F11 CPU. enable full EIS, MFPS, MTPS, and MFPT\n\ --mj11* J11 CPU. enable full EIS, MTPS, MFPS, MFPT, SPL,\n\ - CSM, TSTSET, and WRTLCK\n\ --mt11* T11 CPU. enable limited EIS, MTPS, and MFPS\n\ -\n\ -PDP-11 machine model options:\n\ -\n\ --m11/03 same as -mkd11f\n\ --m11/04 same as -mkd11d\n\ --m11/05 same as -mkd11b\n\ --m11/10 same as -mkd11b\n\ --m11/15 same as -mka11\n\ --m11/20 same as -mka11\n\ --m11/21 same as -mt11\n\ --m11/23 same as -mf11\n\ --m11/24 same as -mf11\n\ --m11/34 same as -mkd11e\n\ --m11/34a same as -mkd11e -mfpp\n\ --m11/35 same as -mkd11a\n\ --m11/40 same as -mkd11a\n\ --m11/44 same as -mkd11z\n\ --m11/45 same as -mkb11\n\ --m11/50 same as -mkb11\n\ --m11/53 same as -mj11\n\ --m11/55 same as -mkb11\n\ --m11/60 same as -mkd11k\n\ --m11/70 same as -mkb11\n\ --m11/73 same as -mj11\n\ --m11/83 same as -mj11\n\ --m11/84 same as -mj11\n\ --m11/93 same as -mj11\n\ --m11/94 same as -mj11\n\ -"); -} - -symbolS * -md_undefined_symbol (char *name ATTRIBUTE_UNUSED) -{ - return 0; -} - -valueT -md_section_align (segT segment ATTRIBUTE_UNUSED, - valueT size) -{ - return (size + 1) & ~1; -} - -long -md_pcrel_from (fixS *fixP) -{ - return fixP->fx_frag->fr_address + fixP->fx_where + fixP->fx_size; -} - -/* Translate internal representation of relocation info to BFD target - format. */ - -arelent * -tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, - fixS *fixp) -{ - arelent *reloc; - bfd_reloc_code_real_type code; - - reloc = xmalloc (sizeof (* reloc)); - - reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); - *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); - reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; - - /* This is taken account for in md_apply_fix(). */ - reloc->addend = -symbol_get_bfdsym (fixp->fx_addsy)->section->vma; - - switch (fixp->fx_r_type) - { - case BFD_RELOC_16: - if (fixp->fx_pcrel) - code = BFD_RELOC_16_PCREL; - else - code = BFD_RELOC_16; - break; - - case BFD_RELOC_16_PCREL: - code = BFD_RELOC_16_PCREL; - break; - - default: - BAD_CASE (fixp->fx_r_type); - return NULL; - } - - reloc->howto = bfd_reloc_type_lookup (stdoutput, code); - - if (reloc->howto == NULL) - { - as_bad_where (fixp->fx_file, fixp->fx_line, - _("Can not represent %s relocation in this object file format"), - bfd_get_reloc_code_name (code)); - return NULL; - } - - return reloc; -} - -void -pseudo_bss (int c ATTRIBUTE_UNUSED) -{ - int temp; - - temp = get_absolute_expression (); - subseg_set (bss_section, temp); - demand_empty_rest_of_line (); -} - -void -pseudo_even (int c ATTRIBUTE_UNUSED) -{ - int alignment = 1; /* 2^1 */ - frag_align (alignment, 0, 1); - record_alignment (now_seg, alignment); -} - -char * -md_atof (int type, char * litP, int * sizeP) -{ - return vax_md_atof (type, litP, sizeP); -} |