diff options
Diffstat (limited to 'gas/config/tc-pdp11.c')
-rw-r--r-- | gas/config/tc-pdp11.c | 1762 |
1 files changed, 0 insertions, 1762 deletions
diff --git a/gas/config/tc-pdp11.c b/gas/config/tc-pdp11.c deleted file mode 100644 index 92023d130a..0000000000 --- a/gas/config/tc-pdp11.c +++ /dev/null @@ -1,1762 +0,0 @@ -/* tc-pdp11.c - pdp11-specific - - Copyright 2001, 2002 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; - 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; - -#if 0 - /* FIXME: what follows is broken badly. You can't deal with differences - in radix conventions this way, because of symbolic constants, constant - expressions made up of pieces of differing radix, etc. The only - choices are to change ../expr.c to know about pdp11 conventions, or - to accept the fact that gas will use consistent conventions that differ - from those of traditional pdp11 assemblers. For now, I've - chosen the latter. paul koning, 12/23/2001 - */ - if (operand->reloc.exp.X_op == O_constant) - { - if (*str == '.') - str++; - else - { - /* FIXME: buffer overflow! */ - char buf[100]; - char *end; - - sprintf (buf, "%ld", operand->reloc.exp.X_add_number); - operand->reloc.exp.X_add_number = strtol (buf, &end, 8); - } - } -#endif - 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) - { -#if 0 - op1.error = NULL; - op1.additional = FALSE; - op1.reloc.type = BFD_RELOC_NONE; - op1.code = 0; - op1.word = 0; - str = parse_expression (str, &op1); - if (op1.error) - { - as_bad (op1.error); - return; - } - - { - char *to = frag_more (2); - - md_number_to_chars (to, op1.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); - } -#else - as_bad (_("Unknown instruction '%s'"), str); -#endif - - 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; -{ -} - -const int md_short_jump_size = 2; -const 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; - } - - as_bad ("unrecognized option `-%c%s'", c, arg ? arg : ""); - - 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 */ |