Support for the Z8k

1 files changed, 1051 insertions, 0 deletions

diff --git a/gas/config/tc-z8k.c b/gas/config/tc-z8k.c
new file mode 100644
index 0000000..0f5acef
--- /dev/null
+++ b/gas/config/tc-z8k.c
@@ -0,0 +1,1051 @@
+/* tc-z8k.c -- Assemble code for the Zilog Z800N
+   Copyright (C) 1992 Free Software Foundation.
+   
+   This file is part of GAS, the GNU Assembler.
+   
+   GAS is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+   
+   GAS is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with GAS; see the file COPYING.  If not, write to
+   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* 
+  Written By Steve Chamberlain
+  sac@cygnus.com
+  */
+
+#include <stdio.h>
+#define DEFINE_TABLE
+#include "disasm/z8kopcode.h"
+
+#include "as.h"
+#include "bfd.h"
+#include <ctype.h>
+#include "listing.h"
+
+char  comment_chars[]  = { ';',0 };
+char line_separator_chars[] = { '$' ,0};
+
+extern int machine;
+extern int coff_flags;
+int segmented_mode;
+int  md_reloc_size ;
+
+/* This table describes all the machine specific pseudo-ops the assembler
+   has to support.  The fields are:
+   pseudo-op name without dot
+   function to call to execute this pseudo-op
+   Integer arg to pass to the function
+   */
+
+void cons();
+
+
+void s_segm()
+{
+  segmented_mode = 1;
+  machine = bfd_mach_z8001;
+  coff_flags = F_Z8001;
+}
+
+void s_unseg()
+{
+  segmented_mode = 0;
+  machine = bfd_mach_z8002;
+  coff_flags = F_Z8002;
+}
+const pseudo_typeS md_pseudo_table[] = 
+{
+{ "int",	cons,		2	},
+{ "data.b",     cons, 		1      },
+{ "data.w",     cons,		 2      },
+{ "data.l",     cons, 		4      },
+{ "form",     	listing_psize,	0      },
+{ "heading", 	listing_title,	0},
+{ "import", 	s_ignore, 	0},
+{ "page", 	listing_eject,	0},
+{ "program", 	s_ignore,	0},
+{ "SEGM",       s_segm,         0},
+{ "UNSEG",       s_unseg,         0},
+{ 0,0,0 }
+};
+
+
+const char EXP_CHARS[] = "eE";
+
+/* Chars that mean this number is a floating point constant */
+/* As in 0f12.456 */
+/* or    0d1.2345e12 */
+char FLT_CHARS[] = "rRsSfFdDxXpP";
+
+
+const relax_typeS md_relax_table[1];
+
+
+static struct hash_control *opcode_hash_control;	/* Opcode mnemonics */
+
+
+
+void md_begin () 
+{
+  opcode_entry_type *opcode;
+  char *prev_name= "";
+  int idx = 0;
+	
+  opcode_hash_control = hash_new();
+
+	
+  for (opcode = z8k_table; opcode->name; opcode++) 
+  {
+    /* Only enter unique codes into the table */
+    char *src= opcode->name;
+
+    if (strcmp(opcode->name, prev_name)) 
+    {
+      hash_insert(opcode_hash_control, opcode->name, (char *)opcode);
+      idx++;
+    }
+    opcode->idx = idx;
+    prev_name = opcode->name;
+  }
+	
+}
+
+
+struct z8k_exp {
+	char *e_beg;
+	char *e_end;
+	expressionS e_exp;
+};
+typedef struct z8k_op 
+{
+  char regsize;   /* 'b','w','r','q' */
+  unsigned int reg; /* 0..15 */
+
+  int mode;
+
+  unsigned int x_reg;/* any other register associated with the mode */
+  expressionS exp; /* any expression */
+} op_type;
+
+
+
+static op_type *da_address;
+static op_type *imm_operand;
+
+int the_cc;
+
+char * 
+DEFUN(whatreg,(reg, src),
+      int *reg AND
+      char *src)
+{
+  if (isdigit(src[1])) 
+  {
+    *reg = (src[0] - '0') * 10 +src[1] - '0';
+    return src+2;
+  }
+  else
+  {
+    *reg = (src[0] - '0');
+    return src+1;
+  }
+return 0;
+}
+
+/*
+  parse operands	
+
+  rh0-rh7, rl0-rl7
+  r0-r15
+  rr0-rr14
+  rq0--rq12
+  WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp
+  r0l,r0h,..r7l,r7h
+  @WREG
+  @WREG+
+  @-WREG
+  #const
+  
+  */
+
+
+/* try and parse a reg name, returns number of chars consumed */
+char*
+DEFUN(parse_reg,(src, mode, reg),
+      char *src AND
+      int * mode AND
+      unsigned int *reg)
+{
+  char *res = 0;
+  if (src[0] == 'R') 
+  {
+    if (src[1] == 'R')
+    {
+      *mode = CLASS_REG_LONG;
+      res =   whatreg(reg, src+2);
+    }
+    else  if (src[1] == 'H')
+    {
+      *mode = CLASS_REG_BYTE;
+      res = whatreg(reg, src+2);
+    }
+    else if (src[1] == 'L')
+    {
+      *mode = CLASS_REG_BYTE;
+      res = whatreg(reg, src+2);
+    }
+    else if (src[1] == 'Q')
+    {
+    * mode = CLASS_REG_QUAD;
+      res = whatreg(reg, src+2);
+    }
+    else 
+    {
+      *mode = CLASS_REG_WORD;
+      res = whatreg(reg, src+1);
+    }
+  }
+  return res;
+
+
+}
+
+char *
+DEFUN(parse_exp,(s, op),
+      char *s AND
+      expressionS *op)
+{
+	char *save = input_line_pointer;
+	char *new;
+	segT seg;
+	input_line_pointer = s;
+	seg = expr(0,op);
+	new = input_line_pointer;
+	input_line_pointer = save;
+	if (SEG_NORMAL(seg)) 
+	    return new;
+	switch (seg) {
+	case SEG_ABSOLUTE:
+	case SEG_UNKNOWN:
+	case SEG_DIFFERENCE:
+	case SEG_BIG:
+	case SEG_REGISTER:
+		return new;
+	case SEG_ABSENT:
+		as_bad("Missing operand");
+		return new;
+	default:
+		as_bad("Don't understand operand of type %s", segment_name (seg));
+		return new;
+	}
+}
+
+
+/* The many forms of operand:
+   
+   <rb>
+   <r>
+   <rr>
+   <rq>
+   @r
+   #exp	
+   exp
+   exp(r)
+   r(#exp)
+   r(r)
+
+
+   
+   */
+
+static
+char *
+DEFUN(checkfor,(ptr, what),
+      char *ptr AND
+      char what)
+{
+if (*ptr == what) ptr++;
+else {
+as_bad("expected %c", what);
+}
+return ptr;
+}
+
+/* Make sure the mode supplied is the size of a word */
+static void 
+DEFUN(regword,(mode, string),
+      int mode AND 
+      char *string)
+{
+  int ok;
+  ok = CLASS_REG_WORD;
+  if (ok != mode) 
+  {  
+    as_bad("register is wrong size for a word %s", string);
+  }
+}
+
+/* Make sure the mode supplied is the size of an address */
+static void 
+DEFUN(regaddr,(mode, string),
+      int mode AND
+      char *string)
+{
+  int ok;
+  ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD;
+  if (ok != mode) 
+  {  
+    as_bad("register is wrong size for address %s", string);
+  }
+}
+
+struct cc_names {
+int value;
+char *name;
+
+
+};
+
+struct cc_names table[] = 
+{
+  0x0,"F",
+  0x6,"Z",
+  0xe,"NZ",
+  0x7,"C",
+  0xf,"NC",
+  0xd,"PL",
+  0x5,"MI",
+  0xe,"NE",
+  0x6,"EQ",
+  0x4,"OV",
+  0xc,"NOV",
+  0x4,"PE",
+  0xC,"PO",
+  0x9,"GE",
+  0x1,"LT",
+  0xa,"GT",
+  0x2,"LE",
+  0xf,"UGE",
+  0x7,"ULT",
+  0xb,"UGT",
+  0x3,"ULE",
+  0,0
+ };
+
+static void
+DEFUN(get_cc_operand,(ptr, mode, dst),
+      char **ptr AND 
+      struct z8k_op *mode AND 
+      unsigned int dst)
+{
+  char *src = *ptr;
+  int r;
+  int i;
+  mode->mode = CLASS_CC;
+  for (i = 0; table[i].name; i++)
+  {
+    int j;
+    for (j = 0; table[i].name[j]; j++) 
+    {
+      if (table[i].name[j] != src[j])
+       goto fail;
+    }
+   the_cc = table[i].value;
+    *ptr = src + j;
+    return;
+   fail:;
+  }
+the_cc = 0x8;
+  return ;
+}
+
+static void 
+DEFUN(get_operand,(ptr, mode, dst),
+      char **ptr AND 
+      struct z8k_op *mode AND 
+      unsigned int dst)
+{
+  char *src = *ptr;
+  char *end;
+  unsigned   int num;
+  unsigned  int len;
+  unsigned int size;
+  mode->mode = 0;
+
+  if (*src == '#') 
+  {
+    mode->mode = CLASS_IMM;
+    imm_operand = mode;
+    src = parse_exp(src+1, &(mode->exp));
+  }	
+  else if (*src == '@') {
+    int d;
+    mode->mode = CLASS_IR;
+    src= parse_reg(src+1, &d, &mode->reg);
+  }
+  else 
+  {
+    int reg;
+    end = parse_reg(src, &mode->mode, &reg);
+
+    if (end)
+    {
+      int nw, nr;
+      src = end;
+      if (*src == '(') 
+      {
+	src++;
+	end = parse_reg(src, &nw, &nr);
+	if (end) 
+	{
+	  /* Got Ra(Rb) */
+	  src = end;
+
+	  if (*src != ')')
+	  {
+	    as_bad("Missing ) in ra(rb)");
+	  }
+	  else
+	  {
+	    src++;
+	  }
+	  
+	  regaddr(mode->mode,"ra(rb) ra");
+	  regword(mode->mode,"ra(rb) rb");
+	  mode->mode = CLASS_BX;
+	  mode->reg = reg;
+	  mode->x_reg = nr;
+
+	}
+	else 
+	{
+	  /* Got Ra(disp) */
+	  if (*src == '#')
+	   src++;
+	  src = parse_exp(src, &(mode->exp));
+	  src = checkfor(src, ')');
+	  mode->mode = CLASS_BA;
+	  mode->reg = reg;
+	  mode->x_reg = 0;
+	}
+      }
+      else
+      {
+	mode->reg = reg;
+	mode->x_reg = 0;
+      }
+    }
+    else 
+    {
+      /* No initial reg */
+      src = parse_exp(src, &(mode->exp));
+      if (*src == '(') 
+      {
+	src++;
+	end = parse_reg(src, &(mode->mode), &reg);
+	regword(mode->mode,"addr(Ra) ra");
+	mode->mode = CLASS_X;
+	mode->reg = reg;
+	mode->x_reg =0;
+	da_address = mode;
+	src = checkfor(end, ')');
+      }
+      else 
+      {
+	/* Just an address */
+	mode->mode = CLASS_DA;
+	mode->reg = 0;
+	mode->x_reg = 0;
+	da_address = mode;
+      }
+    }
+  }
+  *ptr = src;
+}
+
+static
+char *
+DEFUN(get_operands,(operand, op_end, operand),
+	opcode_entry_type *opcode AND
+	  char *op_end AND
+	  op_type *operand) 
+{
+  char *ptr = op_end;
+  switch (opcode->noperands) 
+  {
+   case 0:
+    operand[0].mode = 0;
+    operand[1].mode = 0;
+    break;
+		    
+   case 1:    
+    ptr++;
+    get_operand(& ptr, operand +0,0);
+    operand[1].mode =0;
+    break;
+		    
+   case 2:
+    ptr++;
+    if (opcode->arg_info[0] == CLASS_CC) 
+    {
+      get_cc_operand(&ptr, operand+0,0);
+    }
+    else
+    {
+      get_operand(& ptr, operand +0,0);
+    }
+    if (*ptr == ',') ptr++;
+    get_operand(& ptr, operand +1, 1);
+    break;
+		    
+   default:
+    abort();    
+  }
+	
+	
+  return ptr;    
+}
+
+/* Passed a pointer to a list of opcodes which use different
+   addressing modes, return the opcode which matches the opcodes
+   provided
+   */
+
+int reg[16];
+expressionS disp;
+
+static
+opcode_entry_type *
+DEFUN(get_specific,(opcode,  operands),
+      opcode_entry_type *opcode AND
+      op_type *operands)
+
+{
+  opcode_entry_type *this_try = opcode ;
+  int found = 0;
+  unsigned int noperands = opcode->noperands;
+	
+  unsigned int dispreg;
+  unsigned int this_index = opcode->idx;
+
+  while (this_index == opcode->idx && !found) 
+  {
+    unsigned int i;
+		    
+    this_try  = opcode ++;
+    for (i = 0; i < noperands; i++) 
+    {
+      int mode = operands[i].mode;
+
+      if ((mode&CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) goto fail;
+
+      reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg;
+    }
+
+    found =1;
+   fail: ;
+  }
+  if (found) 
+   return this_try;
+  else 
+   return 0;
+}
+
+static void
+DEFUN(check_operand,(operand, width, string),
+	  struct z8k_op *operand AND
+	  unsigned int width AND
+	  char *string)
+{
+  if (operand->exp.X_add_symbol == 0 
+      && operand->exp.X_subtract_symbol == 0)
+  {
+		    
+    /* No symbol involved, let's look at offset, it's dangerous if any of
+       the high bits are not 0 or ff's, find out by oring or anding with
+       the width and seeing if the answer is 0 or all fs*/
+    if ((operand->exp.X_add_number & ~width) != 0 &&
+	(operand->exp.X_add_number | width)!= (~0))
+    {
+      as_warn("operand %s0x%x out of range.", string, operand->exp.X_add_number);
+    }
+  }
+	
+}
+
+static void 
+DEFUN(newfix,(ptr, type, operand),
+      int byte AND
+      int type AND
+      op_type *operand)
+{
+
+  fix_new(frag_now,
+	  byte,
+	  1,
+	  operand->exp.X_add_symbol,
+	  operand->exp.X_subtract_symbol,
+	  operand->exp.X_add_number,
+	  0,
+	  type);
+}
+
+
+/* Now we know what sort of opcodes it is, lets build the bytes -
+ */
+static void 
+    DEFUN (build_bytes,(this_try, operand),
+	   opcode_entry_type *this_try AND
+	   struct z8k_op *operand)
+{
+  unsigned int i;
+  char buffer[20];
+  int length;
+  char *output;
+  char *output_ptr = buffer;
+  char part;
+  int c;
+  char high;
+  int nib;
+  int nibble;
+  unsigned short *class_ptr;
+  length = this_try->length;
+  if (segmented_mode && da_address) 
+  {
+    /* two more bytes when in segmented mode and using da address
+       mode */
+    length += 2;	
+  }
+  output  = frag_more(this_try->length);
+memset(buffer, 20, 0);  
+  class_ptr = this_try->byte_info;
+ top: ;
+
+  for (nibble = 0; c = *class_ptr++; nibble++)
+  {
+
+    switch (c & CLASS_MASK) 
+    {
+     default:
+      abort();
+     case CLASS_ADDRESS:
+      /* Direct address, we don't cope with the SS mode right now */
+      if (segmented_mode) {
+	newfix(nibble/2, R_DA | R_SEG, da_address);
+	output_ptr += 4;
+      }
+      else {
+	newfix(nibble/2, R_DA, da_address);
+	output_ptr += 2;
+      }
+      da_address = 0;
+      break;
+     case CLASS_CC:
+      *output_ptr++ = the_cc;
+      break;
+     case CLASS_BIT:
+      *output_ptr++ = c & 0xf;
+      break;
+     case CLASS_REGN0:
+      if (reg[c&0xf] == 0) 
+      {
+	as_bad("can't use R0 here");
+      }
+     case CLASS_REG:
+     case CLASS_REG_BYTE:
+     case CLASS_REG_WORD:
+     case CLASS_REG_LONG:
+     case CLASS_REG_QUAD:
+      /* Insert bit mattern of
+	 right reg */
+      *output_ptr++ =  reg[c & 0xf];
+      break;
+     case CLASS_IMM:
+     {
+       nib = 0;
+       switch (c & ARG_MASK)
+       {
+	case ARG_IMM4:
+	 newfix(nibble/2, R_IMM4L, imm_operand);
+	 *output_ptr++ = 0;
+	 break;
+
+	case   ARG_IMM8:  
+	 newfix(nibble/2, R_IMM8, imm_operand);
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+
+	case   ARG_IMM16:  
+	 newfix(nibble/2, R_IMM16, imm_operand);
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 break;
+
+	case   ARG_IMM32:  
+	 newfix(nibble/2, R_IMM32, imm_operand);
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+	 *output_ptr++ = 0;
+
+	 output_ptr +=8;
+	 break;
+
+	default:
+	 abort();
+
+
+       }
+     }
+    }
+  }
+
+  /* Copy from the nibble buffer into the frag */
+
+ {
+   char *src = buffer;
+   char *fragp = output;
+   while (src < output_ptr) 
+   {
+     *fragp = (src[0] << 4) | src[1];
+     src+=2;
+     fragp++;
+   }
+
+	
+ }
+
+}
+
+/* This is the guts of the machine-dependent assembler.  STR points to a
+   machine dependent instruction.  This funciton is supposed to emit
+   the frags/bytes it assembles to.
+   */
+
+
+
+void 
+    DEFUN(md_assemble,(str),
+	  char *str)
+{
+  char *op_start;
+  char *op_end;
+  unsigned int i;
+  struct       z8k_op operand[2];  
+  opcode_entry_type *opcode;
+  opcode_entry_type * prev_opcode;
+	
+  char *dot = 0;
+  char c;    
+  /* Drop leading whitespace */
+  while (*str == ' ')
+   str++;
+	
+  /* find the op code end */
+  for (op_start = op_end = str;
+       *op_end != 0 && *op_end != ' ';
+       op_end ++) 
+  {
+  }
+	
+  ;
+	
+  if (op_end == op_start) 
+  {
+    as_bad("can't find opcode ");
+  }
+  c = *op_end;
+	
+  *op_end = 0;
+	
+  opcode = (opcode_entry_type *) hash_find(opcode_hash_control,
+					   op_start);
+	
+  if (opcode == NULL) 
+  {
+    as_bad("unknown opcode");
+    return;
+  }
+	
+
+  input_line_pointer =   get_operands(opcode, op_end,
+				      operand);
+  *op_end = c;
+  prev_opcode = opcode;
+	
+  opcode = get_specific(opcode,  operand);
+	
+  if (opcode == 0)  
+  {
+    /* Couldn't find an opcode which matched the operands */
+    char *where =frag_more(2);
+    where[0] = 0x0;
+    where[1] = 0x0;
+
+    as_bad("error");
+    return;
+  }
+	
+  build_bytes(opcode, operand);
+}	
+
+
+void 
+    DEFUN(tc_crawl_symbol_chain, (headers),
+	  object_headers *headers)
+{
+	printf("call to tc_crawl_symbol_chain \n");
+}
+
+symbolS *DEFUN(md_undefined_symbol,(name),
+	       char *name)
+{
+	return 0;
+}
+
+void 
+    DEFUN(tc_headers_hook,(headers),
+	  object_headers *headers)
+{
+	printf("call to tc_headers_hook \n"); 
+}
+void
+    DEFUN_VOID(md_end) 
+{
+}
+
+/* Various routines to kill one day */
+/* Equal to MAX_PRECISION in atof-ieee.c */
+#define MAX_LITTLENUMS 6
+
+/* Turn a string in input_line_pointer into a floating point constant of type
+   type, and store the appropriate bytes in *litP.  The number of LITTLENUMS
+   emitted is stored in *sizeP .  An error message is returned, or NULL on OK.
+   */
+char *
+    md_atof(type,litP,sizeP)
+char type;
+char *litP;
+int *sizeP;
+{
+	int	prec;
+	LITTLENUM_TYPE words[MAX_LITTLENUMS];
+	LITTLENUM_TYPE *wordP;
+	char	*t;
+	char	*atof_ieee();
+	
+	switch(type) {
+	case 'f':
+	case 'F':
+	case 's':
+	case 'S':
+		prec = 2;
+		break;
+		
+	case 'd':
+	case 'D':
+	case 'r':
+	case 'R':
+		prec = 4;
+		break;
+		
+	case 'x':
+	case 'X':
+		prec = 6;
+		break;
+		
+	case 'p':
+	case 'P':
+		prec = 6;
+		break;
+		
+	default:
+		*sizeP=0;
+		return "Bad call to MD_ATOF()";
+	}
+	t=atof_ieee(input_line_pointer,type,words);
+	if(t)
+	    input_line_pointer=t;
+	
+	*sizeP=prec * sizeof(LITTLENUM_TYPE);
+	for(wordP=words;prec--;) {
+		md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE));
+		litP+=sizeof(LITTLENUM_TYPE);
+	}
+	return "";	/* Someone should teach Dean about null pointers */
+}
+
+int
+    md_parse_option(argP, cntP, vecP)
+char **argP;
+int *cntP;
+char ***vecP;
+
+{
+	return 0;
+	
+}
+
+int md_short_jump_size;
+
+void tc_aout_fix_to_chars () { printf("call to tc_aout_fix_to_chars \n");
+			       abort(); }
+void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol)
+char *ptr;
+long from_addr;
+long to_addr;
+fragS *frag;
+symbolS *to_symbol;
+{
+	as_fatal("failed sanity check.");
+}
+
+void
+    md_create_long_jump(ptr,from_addr,to_addr,frag,to_symbol)
+char *ptr;
+long from_addr, to_addr;
+fragS *frag;
+symbolS *to_symbol;
+{
+	as_fatal("failed sanity check.");
+}
+
+void
+    md_convert_frag(headers, fragP)
+object_headers *headers;
+fragS * fragP;
+
+{ printf("call to md_convert_frag \n"); abort(); }
+
+long
+    DEFUN(md_section_align,(seg, size),
+	  segT seg AND
+	  long size)
+{
+	return((size + (1 << section_alignment[(int) seg]) - 1) & (-1 << section_alignment[(int) seg]));
+	
+}
+
+void
+    md_apply_fix(fixP, val)
+fixS *fixP;
+long val;
+{
+  char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+	
+  switch(fixP->fx_size) {
+   case 1:
+    *buf++=val;
+    break;
+   case 2:
+    *buf++=(val>>8);
+    *buf++=val;
+    break;
+   case 4:
+    *buf++=(val>>24);
+    *buf++=(val>>16);
+    *buf++=(val>>8);
+    *buf++=val;
+    break;
+   default:
+    abort();
+		
+  }
+}
+
+void DEFUN(md_operand, (expressionP),expressionS *expressionP) 
+{ }
+
+int  md_long_jump_size;
+int
+    md_estimate_size_before_relax(fragP, segment_type)
+register fragS *fragP;
+register segT segment_type;
+{ 
+	printf("call tomd_estimate_size_before_relax \n"); abort(); }
+/* Put number into target byte order */
+
+void DEFUN(md_number_to_chars,(ptr, use, nbytes),
+	   char *ptr AND
+	   long use AND
+	   int nbytes)
+{
+	switch (nbytes) {
+	case 4: *ptr++ = (use >> 24) & 0xff;
+	case 3: *ptr++ = (use >> 16) & 0xff;
+	case 2: *ptr++ = (use >> 8) & 0xff;
+	case 1: *ptr++ = (use >> 0) & 0xff;
+		break;
+	default:
+		abort();
+	}
+}
+long md_pcrel_from(fixP) 
+fixS *fixP; { abort(); }
+
+void tc_coff_symbol_emit_hook() { }
+
+
+void tc_reloc_mangle(fix_ptr, intr, base)
+fixS *fix_ptr;
+struct internal_reloc *intr;
+bfd_vma base;
+
+{
+  symbolS *symbol_ptr;
+	
+  symbol_ptr = fix_ptr->fx_addsy;
+	
+  /* If this relocation is attached to a symbol then it's ok
+     to output it */
+  if (fix_ptr->fx_r_type == RELOC_32) {
+    /* cons likes to create reloc32's whatever the size of the reloc..
+     */
+    switch (fix_ptr->fx_size) 
+    {
+			    
+     case 2:
+      intr->r_type = R_IMM16;
+      break;
+     case 1:
+      intr->r_type = R_IMM8;
+      break;
+     default:
+      abort();
+			    
+    }
+		
+  }
+  else {  
+    intr->r_type = fix_ptr->fx_r_type;
+  }
+	
+  intr->r_vaddr = fix_ptr->fx_frag->fr_address +  fix_ptr->fx_where  +base;
+  intr->r_offset = fix_ptr->fx_offset;
+	
+  if (symbol_ptr)
+   intr->r_symndx = symbol_ptr->sy_number;
+  else
+   intr->r_symndx = -1;
+	
+	
+}
+
+