URL
https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk
Subversion Repositories open8_urisc
[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [config/] [tc-pdp11.c] - Rev 178
Go to most recent revision | Compare with Previous | Blame | View Log
/* 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); }
Go to most recent revision | Compare with Previous | Blame | View Log