/* tc-pdp11.c - pdp11-specific - Copyright 2001, 2002, 2004, 2005 Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. GAS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GAS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GAS; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Apparently unused functions: md_convert_frag md_estimate_size_before_relax md_create_short_jump md_create_long_jump */ #include "as.h" #include "safe-ctype.h" #include "opcode/pdp11.h" static int set_option PARAMS ((char *arg)); static int set_cpu_model PARAMS ((char *arg)); static int set_machine_model PARAMS ((char *arg)); extern int flonum_gen2vax PARAMS ((char format_letter, FLONUM_TYPE * f, LITTLENUM_TYPE * words)); #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 void init_defaults () { static int first = 1; if (first) { set_option ("all-extensions"); set_option ("pic"); first = 0; } } static struct hash_control *insn_hash = NULL; void md_begin () { 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, (PTR)(pdp11_opcodes + i)); for (i = 0; i < pdp11_num_aliases; i++) hash_insert (insn_hash, pdp11_aliases[i].name, (PTR)(pdp11_aliases + i)); } void md_number_to_chars (con, value, nbytes) 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_fix3 (fixP, valP, seg) 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 (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; case '#': /* immediate */ 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; default: /* label, d(rn), -(rn) */ { char *old = str; 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 != '(') /* label */ { if (operand->reloc.exp.X_op != O_symbol) { operand->error = "Label expected"; return old; } operand->code = 067; operand->additional = 1; operand->word = 0; operand->reloc.type = BFD_RELOC_16_PCREL; operand->reloc.pc_rel = 1; break; } str++; /* d(rn) */ 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->word = 0; operand->reloc.pc_rel = 1; 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 (instruction_string) 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; new = 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; 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; 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 = 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; 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 (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 (fragP, segment) fragS *fragP ATTRIBUTE_UNUSED; segT segment ATTRIBUTE_UNUSED; { return 0; } void md_convert_frag (headers, seg, fragP) 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 (ptr, from_addr, to_addr, frag, to_symbol) 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 (ptr, from_addr, to_addr, frag, to_symbol) 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_option (arg) 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; } if (strcmp (arg, "cis") == 0) /* commersial instructions */ pdp11_extension[PDP11_CIS] = yes; else if (strcmp (arg, "csm") == 0) /* call supervisor mode */ pdp11_extension[PDP11_CSM] = yes; else if (strcmp (arg, "eis") == 0) /* extended instruction set */ pdp11_extension[PDP11_EIS] = pdp11_extension[PDP11_LEIS] = yes; else if (strcmp (arg, "fis") == 0 || /* KEV11 floating-point */ strcmp (arg, "kev11") == 0 || strcmp (arg, "kev-11") == 0) pdp11_extension[PDP11_FIS] = yes; else if (strcmp (arg, "fpp") == 0 || /* FP-11 floating-point */ 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; else if (strcmp (arg, "limited-eis") == 0) /* limited extended insns */ { pdp11_extension[PDP11_LEIS] = yes; if (!pdp11_extension[PDP11_LEIS]) pdp11_extension[PDP11_EIS] = 0; } else if (strcmp (arg, "mfpt") == 0) /* move from processor type */ pdp11_extension[PDP11_MFPT] = yes; else if (strncmp (arg, "mproc", 5) == 0 || /* multiprocessor insns: */ strncmp (arg, "multiproc", 9) == 0 ) /* TSTSET, WRTLCK */ pdp11_extension[PDP11_MPROC] = yes; else if (strcmp (arg, "mxps") == 0) /* move from/to proc status */ pdp11_extension[PDP11_MXPS] = yes; else if (strcmp (arg, "pic") == 0) /* position-independent code */ asm_option[ASM_OPT_PIC] = yes; else if (strcmp (arg, "spl") == 0) /* set priority level */ pdp11_extension[PDP11_SPL] = yes; else if (strcmp (arg, "ucode") == 0 || /* microcode instructions: */ strcmp (arg, "microcode") == 0) /* LDUB, MED, XFC */ pdp11_extension[PDP11_UCODE] = yes; else return 0; return 1; } static int set_cpu_model (arg) 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"); if (strncmp (buf, "a", 1) == 0) /* KA11 (11/15/20) */ return 1; /* no extensions */ else if (strncmp (buf, "b", 1) == 0) /* KB11 (11/45/50/55/70) */ return set_option ("eis") && set_option ("spl"); else if (strncmp (buf, "da", 2) == 0) /* KD11-A (11/35/40) */ return set_option ("limited-eis"); else if (strncmp (buf, "db", 2) == 0 || /* KD11-B (11/05/10) */ strncmp (buf, "dd", 2) == 0) /* KD11-D (11/04) */ return 1; /* no extensions */ else if (strncmp (buf, "de", 2) == 0) /* KD11-E (11/34) */ return set_option ("eis") && set_option ("mxps"); else if (strncmp (buf, "df", 2) == 0 || /* KD11-F (11/03) */ strncmp (buf, "dh", 2) == 0 || /* KD11-H (11/03) */ strncmp (buf, "dq", 2) == 0) /* KD11-Q (11/03) */ return set_option ("limited-eis") && set_option ("mxps"); else if (strncmp (buf, "dk", 2) == 0) /* KD11-K (11/60) */ return set_option ("eis") && set_option ("mxps") && set_option ("ucode"); else if (strncmp (buf, "dz", 2) == 0) /* KD11-Z (11/44) */ return set_option ("csm") && set_option ("eis") && set_option ("mfpt") && set_option ("mxps") && set_option ("spl"); else if (strncmp (buf, "f", 1) == 0) /* F11 (11/23/24) */ return set_option ("eis") && set_option ("mfpt") && set_option ("mxps"); else if (strncmp (buf, "j", 1) == 0) /* J11 (11/53/73/83/84/93/94)*/ return set_option ("csm") && set_option ("eis") && set_option ("mfpt") && set_option ("multiproc") && set_option ("mxps") && set_option ("spl"); else if (strncmp (buf, "t", 1) == 0) /* T11 (11/21) */ return set_option ("limited-eis") && set_option ("mxps"); else return 0; } static int set_machine_model (arg) 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) /* 11/03 */ return set_cpu_model ("kd11f"); /* KD11-F */ else if (strcmp (arg, "04") == 0) /* 11/04 */ return set_cpu_model ("kd11d"); /* KD11-D */ else if (strcmp (arg, "05") == 0 || /* 11/05 or 11/10 */ strcmp (arg, "10") == 0) return set_cpu_model ("kd11b"); /* KD11-B */ else if (strcmp (arg, "15") == 0 || /* 11/15 or 11/20 */ strcmp (arg, "20") == 0) return set_cpu_model ("ka11"); /* KA11 */ else if (strcmp (arg, "21") == 0) /* 11/21 */ return set_cpu_model ("t11"); /* T11 */ else if (strcmp (arg, "23") == 0 || /* 11/23 or 11/24 */ strcmp (arg, "24") == 0) return set_cpu_model ("f11"); /* F11 */ else if (strcmp (arg, "34") == 0 || /* 11/34 or 11/34a */ strcmp (arg, "34a") == 0) return set_cpu_model ("kd11e"); /* KD11-E */ else if (strcmp (arg, "35") == 0 || /* 11/35 or 11/40 */ strcmp (arg, "40") == 0) return set_cpu_model ("kd11da"); /* KD11-A */ else if (strcmp (arg, "44") == 0) /* 11/44 */ return set_cpu_model ("kd11dz"); /* KD11-Z */ else if (strcmp (arg, "45") == 0 || /* 11/45/50/55/70 */ strcmp (arg, "50") == 0 || strcmp (arg, "55") == 0 || strcmp (arg, "70") == 0) return set_cpu_model ("kb11"); /* KB11 */ else if (strcmp (arg, "60") == 0) /* 11/60 */ return set_cpu_model ("kd11k"); /* KD11-K */ /* FPP? */ else if (strcmp (arg, "53") == 0 || /* 11/53/73/83/84/93/94 */ 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") && /* J11 */ set_option ("fpp"); /* All J11 machines come */ /* with FPP installed. */ 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); /* * md_parse_option * Invocation line includes a switch not recognized by the base assembler. * See if it's a processor-specific option. */ int md_parse_option (c, arg) 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; } /* One possible way of parsing options. enum { OPTION_CSM, OPTION_CIS, ... }; struct { const char *pattern; int opt; const char *description; } options; static struct options extension_opts[] = { { "Ncsm", OPTION_CSM, "allow (disallow) CSM instruction" }, { "Ncis", OPTION_CIS, "allow (disallow) commersial instruction set" }, { "Neis", OPTION_EIS, "allow (disallow) extended instruction set" }, ... { "all-extensions", OPTION_ALL_EXTENSIONS, "allow all instruction set extensions\n\ (this is the default)" }, { "no-extensions", OPTION_NO_EXTENSIONS, "disallow all instruction set extensions" }, { "pic", OPTION_PIC, "position-independent code" }, }; static struct options cpu_opts[] = { { "Ka_11_*", OPTION_KA11, "KA11 CPU. ..." }, { "Kb_11_*", OPTION_KB11, "KB11 CPU. ..." }, { "Kd_11_a*", OPTION_KD11A, "KD11-A CPU. ..." }, { "Kd_11_b*", OPTION_KD11B, "KD11-B CPU. ..." }, { "Kd_11_d*", OPTION_KD11D, "KD11-D CPU. ..." }, { "Kd_11_e*", OPTION_KD11E, "KD11-E CPU. ..." }, { "Kd_11_f*", OPTION_KD11F, "KD11-F CPU. ..." }, { "Kd_11_h*", OPTION_KD11H, "KD11-H CPU. ..." }, { "Kd_11_q*", OPTION_KD11Q, "KD11-Q CPU. ..." }, { "Kd_11_z*", OPTION_KD11Z, "KD11-Z CPU. ..." }, { "Df_11_*", OPTION_F11, "F11 CPU. ..." }, { "Dj_11_*", OPTION_J11, "J11 CPU. ..." }, { "Dt_11_*", OPTION_T11, "T11 CPU. ..." }, }; static struct options model_opts[] = { { "P03", OPTION_PDP11_03, "same as ..." }, { "P04", OPTION_PDP11_04, "same as ..." }, { "P05", OPTION_PDP11_05, "same as ..." }, { "P10", OPTION_PDP11_10, "same as ..." }, { "P15", OPTION_PDP11_15, "same as ..." }, { "P20", OPTION_PDP11_20, "same as ..." }, { "P21", OPTION_PDP11_21, "same as ..." }, { "P24", OPTION_PDP11_24, "same as ..." }, { "P34", OPTION_PDP11_34, "same as ..." }, { "P34a", OPTION_PDP11_34A, "same as ..." }, { "P40", OPTION_PDP11_40, "same as ..." }, { "P44", OPTION_PDP11_44, "same as ..." }, { "P45", OPTION_PDP11_45, "same as ..." }, { "P50", OPTION_PDP11_50, "same as ..." }, { "P53", OPTION_PDP11_53, "same as ..." }, { "P55", OPTION_PDP11_55, "same as ..." }, { "P60", OPTION_PDP11_60, "same as ..." }, { "P70", OPTION_PDP11_70, "same as ..." }, { "P73", OPTION_PDP11_73, "same as ..." }, { "P83", OPTION_PDP11_83, "same as ..." }, { "P84", OPTION_PDP11_84, "same as ..." }, { "P93", OPTION_PDP11_93, "same as ..." }, { "P94", OPTION_PDP11_94, "same as ..." }, }; struct { const char *title; struct options *opts; int num; } all_opts[] = { { "PDP-11 instruction set extentions", extension_opts, sizeof extension_opts / sizeof extension_opts[0] }, { "PDP-11 CPU model options", cpu_opts, sizeof cpu_opts / sizeof cpu_opts[0] }, { "PDP-11 machine model options", model_opts, sizeof model_opts / sizeof model_opts[0] }, }; int parse_match (char *arg, char *pattern) { int yes = 1; while (*pattern) { switch (*pattern++) { case 'N': if (strncmp (arg, "no-") == 0) { yes = 0; arg += 3; } break; case 'K': if (arg[0] == 'k') arg++; break; case 'D': if (strncmp (arg, "kd", 2) == 0) arg +=2; break; case 'P': if (strncmp (arg, "pdp-11/", 7) == 0) arg += 7; else if (strncmp (arg, "pdp11/", 6) == 0) arg += 6; else if (strncmp (arg, "11/", 3) == 0) arg += 3; break; case '_': if (arg[0] == "-") { if (*++arg == 0) return 0; } break; case '*': return 1; default: if (*arg++ != pattern[-1]) return 0; } } return arg[0] == 0; } int fprint_opt (stream, pattern) FILE *stream; const char *pattern; { int n; while (*pattern) { switch (*pattern++) { case 'N': n += fprintf (stream, "(no-)"); break; case 'K': n += fprintf (stream, "k"); break; case 'P': n += fprintf (stream "11/"); break; case 'D': case '_': case '*': break; default: fputc (pattern[-1], stream); n++; } } return n; } int parse_option (char *arg) { int i, j; for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++) { for (j = 0; j < all_opts[i].num; j++) { if (parse_match (arg, all_opts[i].opts[j].pattern)) { set_option (all_opts[i].opts[j].opt); return 1; } } } return 0; } static void fprint_space (stream, n) FILE *stream; int n; { while (n--) fputc (' ', stream); } void md_show_usage (stream) FILE *stream; { int i, j, n; for (i = 0; i < sizeof all_opts / sizeof all_opts[0]; i++) { fprintf (stream "\n%s:\n\n", all_opts[i].title); for (j = 0; j < all_opts[i].num; j++) { fprintf (stream, "-m"); n = fprintf_opt (stream, all_opts[i].opts[j].pattern); fprint_space (stream, 22 - n); fprintf (stream, "%s\n", all_opts[i].opts[j].description); } } } */ void md_show_usage (stream) 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 (name) char *name ATTRIBUTE_UNUSED; { return 0; } valueT md_section_align (segment, size) segT segment ATTRIBUTE_UNUSED; valueT size; { return (size + 1) & ~1; } long md_pcrel_from (fixP) 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 (section, fixp) asection *section ATTRIBUTE_UNUSED; fixS *fixp; { arelent *reloc; bfd_reloc_code_real_type code; reloc = (arelent *) xmalloc (sizeof (arelent)); reloc->sym_ptr_ptr = (asymbol **) 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_fix3(). */ 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 (c) int c ATTRIBUTE_UNUSED; { int temp; temp = get_absolute_expression (); subseg_set (bss_section, temp); demand_empty_rest_of_line (); } void pseudo_even (c) int c ATTRIBUTE_UNUSED; { int alignment = 1; /* 2^1 */ frag_align (alignment, 0, 1); record_alignment (now_seg, alignment); } /* end of tc-pdp11.c */