--- /dev/null
+/* m88k.c -- Assembler for the Motorola 88000
+ Contributed by Devon Bowen of Buffalo University
+ and Torbjorn Granlund of the Swedish Institute of Computer Science.
+ Copyright (C) 1989-1992 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "as.h"
+#include "opcode/m88k.h"
+
+struct m88k_insn
+{
+ unsigned long opcode;
+ expressionS exp;
+ enum reloc_type reloc;
+};
+
+#if __STDC__ == 1
+
+static int calcop(struct m88k_opcode *format, char *param, struct m88k_insn *insn);
+
+#else /* not __STDC__ */
+
+static int calcop();
+
+#endif /* not __STDC__ */
+
+char *getval ();
+char *get_reg ();
+char *get_imm16 ();
+char *get_bf ();
+char *get_pcr ();
+char *get_cmp ();
+char *get_cnd ();
+char *get_cr ();
+char *get_fcr ();
+char *get_vec9 ();
+
+struct field_val_assoc
+{
+ char *name;
+ unsigned val;
+};
+
+struct field_val_assoc cr_regs[] =
+{
+ {"PID", 0},
+ {"PSR", 1},
+ {"EPSR", 2},
+ {"SSBR", 3},
+ {"SXIP", 4},
+ {"SNIP", 5},
+ {"SFIP", 6},
+ {"VBR", 7},
+ {"DMT0", 8},
+ {"DMD0", 9},
+ {"DMA0", 10},
+ {"DMT1", 11},
+ {"DMD1", 12},
+ {"DMA1", 13},
+ {"DMT2", 14},
+ {"DMD2", 15},
+ {"DMA2", 16},
+ {"SR0", 17},
+ {"SR1", 18},
+ {"SR2", 19},
+ {"SR3", 20},
+
+ {NULL, 0},
+};
+
+struct field_val_assoc fcr_regs[] =
+{
+ {"FPECR", 0},
+ {"FPHS1", 1},
+ {"FPLS1", 2},
+ {"FPHS2", 3},
+ {"FPLS2", 4},
+ {"FPPT", 5},
+ {"FPRH", 6},
+ {"FPRL", 7},
+ {"FPIT", 8},
+
+ {"FPSR", 62},
+ {"FPCR", 63},
+
+ {NULL, 0},
+};
+
+struct field_val_assoc cmpslot[] =
+{
+/* Integer Floating point */
+ {"nc", 0},
+ {"cp", 1},
+ {"eq", 2},
+ {"ne", 3},
+ {"gt", 4},
+ {"le", 5},
+ {"lt", 6},
+ {"ge", 7},
+ {"hi", 8}, {"ou", 8},
+ {"ls", 9}, {"ib", 9},
+ {"lo", 10}, {"in", 10},
+ {"hs", 11}, {"ob", 11},
+
+ {NULL, 0},
+};
+
+struct field_val_assoc cndmsk[] =
+{
+ {"gt0", 1},
+ {"eq0", 2},
+ {"ge0", 3},
+ {"lt0", 12},
+ {"ne0", 13},
+ {"le0", 14},
+
+ {NULL, 0},
+};
+
+extern char *myname;
+static struct hash_control *op_hash = NULL;
+
+/* These bits should be turned off in the first address of every segment */
+int md_seg_align = 7;
+
+/* This is the number to put at the beginning of the a.out file */
+long omagic = OMAGIC;
+
+/* 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[] = ";";
+
+/* Chars that can be used to separate mant from exp in floating point nums */
+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) */
+char FLT_CHARS[] = "dDfF";
+
+extern void float_cons (), cons (), s_globl (), s_line (),
+ s_space (), s_set (), stringer (), s_lcomm ();
+static void s_bss ();
+
+const pseudo_typeS md_pseudo_table[] = {
+ {"align", s_align_bytes, 0 },
+ {"def", s_set, 0},
+ {"dfloat", float_cons, 'd'},
+ {"ffloat", float_cons, 'f'},
+ {"global", s_globl, 0},
+ {"half", cons, 2 },
+ {"bss", s_bss, 0},
+ {"string", stringer, 0},
+ {"word", cons, 4 },
+ {"zero", s_space, 0},
+ {0}
+};
+
+const int md_reloc_size = 12; /* Size of relocation record */
+
+void
+md_begin ()
+{
+ char *retval = NULL;
+ unsigned int i = 0;
+
+ /* initialize hash table */
+
+ op_hash = hash_new ();
+ if (op_hash == NULL)
+ as_fatal ("Could not initialize hash table");
+
+ /* loop until you see the end of the list */
+
+ while (*m88k_opcodes[i].name)
+ {
+ char *name = m88k_opcodes[i].name;
+
+ /* hash each mnemonic and record its position */
+
+ retval = hash_insert (op_hash, name, &m88k_opcodes[i]);
+
+ if (retval != NULL && *retval != '\0')
+ as_fatal ("Can't hash instruction '%s':%s",
+ m88k_opcodes[i].name, retval);
+
+ /* skip to next unique mnemonic or end of list */
+
+ for (i++; !strcmp (m88k_opcodes[i].name, name); i++)
+ ;
+ }
+}
+
+int
+md_parse_option (argP, cntP, vecP)
+ char **argP;
+ int *cntP;
+ char ***vecP;
+{
+ as_warn ("unknown option: -%s", *argP);
+ return(0);
+}
+
+void
+md_assemble (op)
+ char *op;
+{
+ char *param, *thisfrag;
+ struct m88k_opcode *format;
+ struct m88k_insn insn;
+
+ assert (op);
+
+ /* skip over instruction to find parameters */
+
+ for (param = op; *param != 0 && !isspace (*param); param++)
+ ;
+ if (*param != 0)
+ *param++ = 0;
+
+ /* try to find the instruction in the hash table */
+
+ if ((format = (struct m88k_opcode *) hash_find (op_hash, op)) == NULL)
+ {
+ as_fatal ("Invalid mnemonic '%s'", op);
+ return;
+ }
+
+ /* try parsing this instruction into insn */
+
+ insn.exp.X_add_symbol = 0;
+ insn.exp.X_subtract_symbol = 0;
+ insn.exp.X_add_number = 0;
+ insn.exp.X_seg = 0;
+ insn.reloc = NO_RELOC;
+
+ while (!calcop(format, param, &insn))
+ {
+ /* if it doesn't parse try the next instruction */
+
+ if (!strcmp (format[0].name, format[1].name))
+ format++;
+ else
+ {
+ as_fatal ("Parameter syntax error");
+ return;
+ }
+ }
+
+ /* grow the current frag and plop in the opcode */
+
+ thisfrag = frag_more (4);
+ md_number_to_chars (thisfrag, insn.opcode, 4);
+
+ /* if this instruction requires labels mark it for later */
+
+ switch (insn.reloc)
+ {
+ case NO_RELOC:
+ break;
+
+ case RELOC_LO16:
+ case RELOC_HI16:
+ fix_new (frag_now,
+ thisfrag - frag_now->fr_literal + 2,
+ 2,
+ insn.exp.X_add_symbol,
+ insn.exp.X_subtract_symbol,
+ insn.exp.X_add_number,
+ 0,
+ insn.reloc);
+ break;
+
+ case RELOC_IW16:
+ fix_new (frag_now,
+ thisfrag - frag_now->fr_literal,
+ 4,
+ insn.exp.X_add_symbol,
+ insn.exp.X_subtract_symbol,
+ insn.exp.X_add_number,
+ 0,
+ insn.reloc);
+ break;
+
+ case RELOC_PC16:
+ fix_new (frag_now,
+ thisfrag - frag_now->fr_literal + 2,
+ 2,
+ insn.exp.X_add_symbol,
+ insn.exp.X_subtract_symbol,
+ insn.exp.X_add_number,
+ 1,
+ insn.reloc);
+ break;
+
+ case RELOC_PC26:
+ fix_new (frag_now,
+ thisfrag - frag_now->fr_literal,
+ 4,
+ insn.exp.X_add_symbol,
+ insn.exp.X_subtract_symbol,
+ insn.exp.X_add_number,
+ 1,
+ insn.reloc);
+ break;
+
+ default:
+ as_fatal ("Unknown relocation type");
+ break;
+ }
+}
+
+int
+calcop (format, param, insn)
+ struct m88k_opcode *format;
+ char *param;
+ struct m88k_insn *insn;
+{
+ char *fmt = format->op_spec;
+ int f;
+ unsigned val;
+ unsigned opcode;
+
+ insn->opcode = format->opcode;
+ opcode = 0;
+
+ for (;;)
+ {
+ if (param == 0)
+ return 0;
+ f = *fmt++;
+ switch (f)
+ {
+ case 0:
+ insn->opcode |= opcode;
+ return *param == 0;
+
+ default:
+ if (f != *param++)
+ return 0;
+ break;
+
+ case 'd':
+ param = get_reg (param, &val);
+ opcode |= val << 21;
+ break;
+
+ case '1':
+ param = get_reg (param, &val);
+ opcode |= val << 16;
+ break;
+
+ case '2':
+ param = get_reg (param, &val);
+ opcode |= val;
+ break;
+
+ case '3':
+ param = get_reg (param, &val);
+ opcode |= (val << 16) | val;
+ break;
+
+ case 'I':
+ param = get_imm16 (param, insn);
+ break;
+
+ case 'b':
+ param = get_bf (param, &val);
+ opcode |= val;
+ break;
+
+ case 'p':
+ param = get_pcr (param, insn, RELOC_PC16);
+ break;
+
+ case 'P':
+ param = get_pcr (param, insn, RELOC_PC26);
+ break;
+
+ case 'B':
+ param = get_cmp (param, &val);
+ opcode |= val;
+ break;
+
+ case 'M':
+ param = get_cnd (param, &val);
+ opcode |= val;
+ break;
+
+ case 'c':
+ param = get_cr (param, &val);
+ opcode |= val << 5;
+ break;
+
+ case 'f':
+ param = get_fcr (param, &val);
+ opcode |= val << 5;
+ break;
+
+ case 'V':
+ param = get_vec9 (param, &val);
+ opcode |= val;
+ break;
+
+ case '?':
+ /* Having this here repeats the warning somtimes.
+ But can't we stand that? */
+ as_warn ("Use of obsolete instruction");
+ break;
+ }
+ }
+}
+
+char *
+match_name (param, assoc_tab, valp)
+ char *param;
+ struct field_val_assoc *assoc_tab;
+ unsigned *valp;
+{
+ int i;
+ char *name;
+ int name_len;
+
+ for (i = 0;; i++)
+ {
+ name = assoc_tab[i].name;
+ if (name == NULL)
+ return NULL;
+ name_len = strlen (name);
+ if (!strncmp (param, name, name_len))
+ {
+ *valp = assoc_tab[i].val;
+ return param + name_len;
+ }
+ }
+}
+
+char *
+get_reg (param, regnop)
+ char *param;
+ unsigned *regnop;
+{
+ unsigned c;
+ unsigned regno;
+
+ c = *param++;
+ if (c == 'r')
+ {
+ regno = *param++ - '0';
+ if (regno < 10)
+ {
+ if (regno == 0)
+ {
+ *regnop = 0;
+ return param;
+ }
+ c = *param - '0';
+ if (c < 10)
+ {
+ regno = regno * 10 + c;
+ if (c < 32)
+ {
+ *regnop = regno;
+ return param + 1;
+ }
+ }
+ else
+ {
+ *regnop = regno;
+ return param;
+ }
+ }
+ return NULL;
+ }
+ else if (c == 's' && param[0] == 'p')
+ {
+ *regnop = 31;
+ return param + 1;
+ }
+
+ return 0;
+}
+
+char *
+get_imm16 (param, insn)
+ char *param;
+ struct m88k_insn *insn;
+{
+ enum reloc_type reloc = NO_RELOC;
+ unsigned int val;
+ segT seg;
+ char *save_ptr;
+
+ if (!strncmp (param, "hi16", 4) && !isalnum (param[4]))
+ {
+ reloc = RELOC_HI16;
+ param += 4;
+ }
+ else if (!strncmp (param, "lo16", 4) && !isalnum (param[4]))
+ {
+ reloc = RELOC_LO16;
+ param += 4;
+ }
+ else if (!strncmp (param, "iw16", 4) && !isalnum (param[4]))
+ {
+ reloc = RELOC_IW16;
+ param += 4;
+ }
+
+ save_ptr = input_line_pointer;
+ input_line_pointer = param;
+ seg = expression (&insn->exp);
+ param = input_line_pointer;
+ input_line_pointer = save_ptr;
+
+ val = insn->exp.X_add_number;
+
+ if (seg == SEG_ABSOLUTE)
+ {
+ /* Insert the value now, and reset reloc to NO_RELOC. */
+ if (reloc == NO_RELOC)
+ {
+ /* Warn about too big expressions if not surrounded by xx16. */
+ if (val > 0xffff)
+ as_warn ("Expression truncated to 16 bits");
+ }
+
+ if (reloc == RELOC_HI16)
+ val >>= 16;
+
+ insn->opcode |= val & 0xffff;
+ reloc = NO_RELOC;
+ }
+ else if (reloc == NO_RELOC)
+ /* We accept a symbol even without lo16, hi16, etc, and assume
+ lo16 was intended. */
+ reloc = RELOC_LO16;
+
+ insn->reloc = reloc;
+
+ return param;
+}
+
+char *
+get_pcr (param, insn, reloc)
+ char *param;
+ struct m88k_insn *insn;
+ enum reloc_type reloc;
+{
+ char *saveptr, *saveparam;
+ segT seg;
+
+ saveptr = input_line_pointer;
+ input_line_pointer = param;
+
+ seg = expression (&insn->exp);
+
+ saveparam = input_line_pointer;
+ input_line_pointer = saveptr;
+
+ /* Botch: We should relocate now if SEG_ABSOLUTE. */
+ insn->reloc = reloc;
+
+ return saveparam;
+}
+
+char *
+get_cmp (param, valp)
+ char *param;
+ unsigned *valp;
+{
+ unsigned int val;
+ char *save_ptr;
+
+ save_ptr = param;
+
+ param = match_name (param, cmpslot, valp);
+ val = *valp;
+
+ if (param == NULL)
+ {
+ param = save_ptr;
+
+ save_ptr = input_line_pointer;
+ input_line_pointer = param;
+ val = get_absolute_expression ();
+ param = input_line_pointer;
+ input_line_pointer = save_ptr;
+
+ if (val >= 32)
+ {
+ as_warn ("Expression truncated to 5 bits");
+ val %= 32;
+ }
+ }
+
+ *valp = val << 21;
+ return param;
+}
+
+char *
+get_cnd (param, valp)
+ char *param;
+ unsigned *valp;
+{
+ unsigned int val;
+
+ if (isdigit (*param))
+ {
+ param = getval (param, &val);
+
+ if (val >= 32)
+ {
+ as_warn ("Expression truncated to 5 bits");
+ val %= 32;
+ }
+ }
+ else
+ {
+ if (isupper (*param))
+ *param = tolower (*param);
+
+ if (isupper (param[1]))
+ param[1] = tolower (param[1]);
+
+ param = match_name (param, cndmsk, valp);
+
+ if (param == NULL)
+ return NULL;
+
+ val = *valp;
+ }
+
+ *valp = val << 21;
+ return param;
+}
+
+char *
+get_bf2 (param, bc)
+ char *param;
+ int bc;
+{
+ int depth = 0;
+ int c;
+
+ for (;;)
+ {
+ c = *param;
+ if (c == 0)
+ return param;
+ else if (c == '(')
+ depth++;
+ else if (c == ')')
+ depth--;
+ else if (c == bc && depth <= 0)
+ return param;
+ param++;
+ }
+}
+
+char *
+get_bf_offset_expression (param, offsetp)
+ char *param;
+ unsigned *offsetp;
+{
+ unsigned offset;
+
+ if (isalpha (param[0]))
+ {
+ if (isupper (param[0]))
+ param[0] = tolower (param[0]);
+ if (isupper (param[1]))
+ param[1] = tolower (param[1]);
+
+ param = match_name (param, cmpslot, offsetp);
+
+ return param;
+ }
+ else
+ {
+ input_line_pointer = param;
+ offset = get_absolute_expression ();
+ param = input_line_pointer;
+ }
+
+ *offsetp = offset;
+ return param;
+}
+
+char *
+get_bf (param, valp)
+ char *param;
+ unsigned *valp;
+{
+ unsigned offset = 0;
+ unsigned width = 0;
+ char *xp;
+ char *save_ptr;
+
+ xp = get_bf2 (param, '<');
+
+ save_ptr = input_line_pointer;
+ input_line_pointer = param;
+ if (*xp == 0)
+ {
+ /* We did not find '<'. We have an offset (width implicitly 32). */
+ param = get_bf_offset_expression (param, &offset);
+ if (param == NULL)
+ return NULL;
+ input_line_pointer = save_ptr;
+ }
+ else
+ {
+ *xp++ = 0; /* Overwrite the '<' */
+ param = get_bf2 (xp, '>');
+ if (*param == 0)
+ return NULL;
+ *param++ = 0; /* Overwrite the '>' */
+
+ width = get_absolute_expression ();
+ xp = get_bf_offset_expression (xp, &offset);
+ input_line_pointer = save_ptr;
+
+ if (xp + 1 != param)
+ return NULL;
+ }
+
+ *valp = ((width % 32) << 5) | (offset % 32);
+
+ return param;
+}
+
+char *
+get_cr (param, regnop)
+ char *param;
+ unsigned *regnop;
+{
+ unsigned regno;
+ unsigned c;
+/* int i; FIXME remove this */
+/* int name_len; FIXME remove this */
+
+ if (!strncmp (param, "cr", 2))
+ {
+ param += 2;
+
+ regno = *param++ - '0';
+ if (regno < 10)
+ {
+ if (regno == 0)
+ {
+ *regnop = 0;
+ return param;
+ }
+ c = *param - '0';
+ if (c < 10)
+ {
+ regno = regno * 10 + c;
+ if (c < 64)
+ {
+ *regnop = regno;
+ return param + 1;
+ }
+ }
+ else
+ {
+ *regnop = regno;
+ return param;
+ }
+ }
+ return NULL;
+ }
+
+ param = match_name (param, cr_regs, regnop);
+
+ return param;
+}
+
+char *
+get_fcr (param, regnop)
+ char *param;
+ unsigned *regnop;
+{
+ unsigned regno;
+ unsigned c;
+/* int i; FIXME remove this */
+/* int name_len; FIXME: remove this */
+
+ if (!strncmp (param, "fcr", 3))
+ {
+ param += 3;
+
+ regno = *param++ - '0';
+ if (regno < 10)
+ {
+ if (regno == 0)
+ {
+ *regnop = 0;
+ return param;
+ }
+ c = *param - '0';
+ if (c < 10)
+ {
+ regno = regno * 10 + c;
+ if (c < 64)
+ {
+ *regnop = regno;
+ return param + 1;
+ }
+ }
+ else
+ {
+ *regnop = regno;
+ return param;
+ }
+ }
+ return NULL;
+ }
+
+ param = match_name (param, fcr_regs, regnop);
+
+ return param;
+}
+
+char *
+get_vec9 (param, valp)
+ char *param;
+ unsigned *valp;
+{
+ unsigned val;
+ char *save_ptr;
+
+ save_ptr = input_line_pointer;
+ input_line_pointer = param;
+ val = get_absolute_expression ();
+ param = input_line_pointer;
+ input_line_pointer = save_ptr;
+
+ if (val >= 1 << 9)
+ as_warn ("Expression truncated to 9 bits");
+
+ *valp = val % (1 << 9);
+
+ return param;
+}
+
+#define hexval(z) \
+ (isdigit (z) ? (z) - '0' : \
+ islower (z) ? (z) - 'a' + 10 : \
+ isupper (z) ? (z) - 'A' + 10 : -1)
+
+char *
+getval (param, valp)
+ char *param;
+ unsigned int *valp;
+{
+ unsigned int val = 0;
+ unsigned int c;
+
+ c = *param++;
+ if (c == '0')
+ {
+ c = *param++;
+ if (c == 'x' || c == 'X')
+ {
+ c = *param++;
+ c = hexval (c);
+ while (c < 16)
+ {
+ val = val * 16 + c;
+ c = *param++;
+ c = hexval (c);
+ }
+ }
+ else
+ {
+ c -= '0';
+ while (c < 8)
+ {
+ val = val * 8 + c;
+ c = *param++ - '0';
+ }
+ }
+ }
+ else
+ {
+ c -= '0';
+ while (c < 10)
+ {
+ val = val * 10 + c;
+ c = *param++ - '0';
+ }
+ }
+
+ *valp = val;
+ return param - 1;
+}
+
+void
+md_number_to_chars (buf, val, nbytes)
+char *buf;
+long val;
+int nbytes;
+{
+ switch (nbytes)
+ {
+ case 4:
+ *buf++ = val >> 24;
+ *buf++ = val >> 16;
+ case 2:
+ *buf++ = val >> 8;
+ case 1:
+ *buf = val;
+ break;
+
+ default:
+ abort ();
+ }
+}
+
+#ifdef comment
+
+void
+md_number_to_imm (buf, val, nbytes, fixP, seg_type)
+unsigned char *buf;
+unsigned int val;
+int nbytes;
+fixS *fixP;
+int seg_type;
+{
+ if (seg_type != N_TEXT || fixP->fx_r_type == NO_RELOC)
+ {
+ switch (nbytes)
+ {
+ case 4:
+ *buf++ = val >> 24;
+ *buf++ = val >> 16;
+ case 2:
+ *buf++ = val >> 8;
+ case 1:
+ *buf = val;
+ break;
+
+ default:
+ abort ();
+ }
+ return;
+ }
+
+ switch (fixP->fx_r_type)
+ {
+ case RELOC_IW16:
+ buf[2] = val >> 8;
+ buf[3] = val;
+ break;
+
+ case RELOC_LO16:
+ buf[0] = val >> 8;
+ buf[1] = val;
+ break;
+
+ case RELOC_HI16:
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ break;
+
+ case RELOC_PC16:
+ val += 4;
+ buf[0] = val >> 10;
+ buf[1] = val >> 2;
+ break;
+
+ case RELOC_PC26:
+ val += 4;
+ buf[0] |= (val >> 26) & 0x03;
+ buf[1] = val >> 18;
+ buf[2] = val >> 10;
+ buf[3] = val >> 2;
+ break;
+
+ case RELOC_32:
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ buf[2] = val >> 8;
+ buf[3] = val;
+ break;
+
+ default:
+ as_fatal ("Bad relocation type");
+ break;
+ }
+}
+#endif /* comment */
+
+/* Apply a fixS to the frags, now that we know the value it ought to
+ hold. */
+
+void md_apply_fix(fixP, val)
+fixS *fixP;
+long val;
+{
+ char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
+
+ fixP->fx_addnumber = val;
+
+
+ switch (fixP->fx_r_type) {
+
+ case RELOC_IW16:
+ buf[2] = val >> 8;
+ buf[3] = val;
+ break;
+
+ case RELOC_LO16:
+ buf[0] = val >> 8;
+ buf[1] = val;
+ break;
+
+ case RELOC_HI16:
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ break;
+
+ case RELOC_PC16:
+ val += 4;
+ buf[0] = val >> 10;
+ buf[1] = val >> 2;
+ break;
+
+ case RELOC_PC26:
+ val += 4;
+ buf[0] |= (val >> 26) & 0x03;
+ buf[1] = val >> 18;
+ buf[2] = val >> 10;
+ buf[3] = val >> 2;
+ break;
+
+ case RELOC_32:
+ buf[0] = val >> 24;
+ buf[1] = val >> 16;
+ buf[2] = val >> 8;
+ buf[3] = val;
+ break;
+
+ case NO_RELOC:
+ switch (fixP->fx_size) {
+ case 4:
+ *buf++ = val >> 24;
+ *buf++ = val >> 16;
+ case 2:
+ *buf++ = val >> 8;
+ case 1:
+ *buf = val;
+ break;
+
+ default:
+ abort ();
+ }
+
+ default:
+ as_bad("bad relocation type: 0x%02x", fixP->fx_r_type);
+ break;
+ }
+
+ return;
+} /* md_apply_fix() */
+
+void
+md_number_to_disp (buf, val, nbytes)
+char *buf;
+int val;
+int nbytes;
+{
+ as_fatal ("md_number_to_disp not defined");
+ md_number_to_chars (buf, val, nbytes);
+}
+
+void
+md_number_to_field (buf, val, nbytes)
+char *buf;
+int val;
+int nbytes;
+{
+ as_fatal ("md_number_to_field not defined");
+ md_number_to_chars (buf, val, nbytes);
+}
+
+#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_short_jump_size = 4;
+
+void
+md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
+ char *ptr;
+ long from_addr, to_addr;
+ fragS *frag;
+ symbolS *to_symbol;
+{
+ ptr[0] = 0xc0; ptr[1] = 0x00; ptr[2] = 0x00; ptr[3] = 0x00;
+ fix_new (frag,
+ ptr - frag->fr_literal,
+ 4,
+ to_symbol,
+ (symbolS *) 0,
+ (long int) 0,
+ 0,
+ RELOC_PC26); /* Botch: Shouldn't this be RELOC_PC16? */
+}
+
+int md_long_jump_size = 4;
+
+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;
+{
+ ptr[0] = 0xc0; ptr[1] = 0x00; ptr[2] = 0x00; ptr[3] = 0x00;
+ fix_new (frag,
+ ptr - frag->fr_literal,
+ 4,
+ to_symbol,
+ (symbolS *) 0,
+ (long int) 0,
+ 0,
+ RELOC_PC26);
+}
+
+int
+md_estimate_size_before_relax (fragP, segment_type)
+ fragS *fragP;
+ segT segment_type;
+{
+ as_fatal("Relaxation should never occur");
+ return(0);
+}
+
+const relax_typeS md_relax_table[] = {0};
+
+void
+md_convert_frag (headers, fragP)
+object_headers *headers;
+ fragS *fragP;
+{
+ as_fatal ("Relaxation should never occur");
+}
+
+void
+md_end ()
+{
+}
+
+#ifdef comment
+
+/*
+ * Risc relocations are completely different, so it needs
+ * this machine dependent routine to emit them.
+ */
+void
+emit_relocations (fixP, segment_address_in_file)
+ fixS *fixP;
+ relax_addressT segment_address_in_file;
+{
+ struct reloc_info_m88k ri;
+ symbolS *symbolP;
+ extern char *next_object_file_charP;
+
+ bzero ((char *) &ri, sizeof (ri));
+ for (; fixP; fixP = fixP->fx_next) {
+
+ if (fixP->fx_r_type >= NO_RELOC) {
+ fprintf (stderr, "fixP->fx_r_type = %d\n", fixP->fx_r_type);
+ abort ();
+ }
+
+ if ((symbolP = fixP->fx_addsy) != NULL) {
+ ri.r_address = fixP->fx_frag->fr_address +
+ fixP->fx_where - segment_address_in_file;
+ if ((symbolP->sy_type & N_TYPE) == N_UNDF) {
+ ri.r_extern = 1;
+ ri.r_symbolnum = symbolP->sy_number;
+ } else {
+ ri.r_extern = 0;
+ ri.r_symbolnum = symbolP->sy_type & N_TYPE;
+ }
+ if (symbolP && symbolP->sy_frag) {
+ ri.r_addend = symbolP->sy_frag->fr_address;
+ }
+ ri.r_type = fixP->fx_r_type;
+ if (fixP->fx_pcrel) {
+/* ri.r_addend -= fixP->fx_where; */
+ ri.r_addend -= ri.r_address;
+ } else {
+ ri.r_addend = fixP->fx_addnumber;
+ }
+
+/* md_ri_to_chars ((char *) &ri, ri); */
+ append (&next_object_file_charP, (char *)& ri, sizeof (ri));
+ }
+ }
+ return;
+}
+#endif /* comment */
+
+/* Translate internal representation of relocation info to target format.
+
+ On m88k: first 4 bytes are normal unsigned long address,
+ next three bytes are index, most sig. byte first.
+ Byte 7 is broken up with bit 7 as external,
+ bits 6, 5, & 4 unused, and the lower four bits as relocation
+ type.
+ Next 4 bytes are long addend. */
+
+void tc_aout_fix_to_chars(where, fixP, segment_address_in_file)
+char *where;
+fixS *fixP;
+relax_addressT segment_address_in_file;
+{
+ long r_index;
+ long r_extern;
+ long r_addend = 0;
+ long r_address;
+
+ know(fixP->fx_addsy);
+
+ if (!S_IS_DEFINED(fixP->fx_addsy)) {
+ r_extern = 1;
+ r_index = fixP->fx_addsy->sy_number;
+ } else {
+ r_extern = 0;
+ r_index = S_GET_TYPE(fixP->fx_addsy);
+ }
+
+ /* this is easy */
+ md_number_to_chars(where,
+ r_address = fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
+ 4);
+
+ /* now the fun stuff */
+ where[4] = (r_index >> 16) & 0x0ff;
+ where[5] = (r_index >> 8) & 0x0ff;
+ where[6] = r_index & 0x0ff;
+ where[7] = ((r_extern << 7) & 0x80) | (0 & 0x70) | (fixP->fx_r_type & 0xf);
+
+ /* Also easy */
+ if (fixP->fx_addsy->sy_frag) {
+ r_addend = fixP->fx_addsy->sy_frag->fr_address;
+ }
+
+ if (fixP->fx_pcrel) {
+ r_addend -= r_address;
+ } else {
+ r_addend = fixP->fx_addnumber;
+ }
+
+ md_number_to_chars(&where[8], r_addend, 4);
+
+ return;
+} /* tc_aout_fix_to_chars() */
+
+
+static void
+s_bss()
+{
+ char *name;
+ char c;
+ char *p;
+ int temp, bss_align = 1;
+ symbolS *symbolP;
+ extern char is_end_of_line[256];
+
+ name = input_line_pointer;
+ c = get_symbol_end();
+ p = input_line_pointer;
+ *p = c;
+ SKIP_WHITESPACE();
+ if ( * input_line_pointer != ',' )
+ {
+ as_warn("Expected comma after name");
+ ignore_rest_of_line();
+ return;
+ }
+ input_line_pointer ++;
+ if ((temp = get_absolute_expression()) < 0)
+ {
+ as_warn("BSS length (%d.) <0! Ignored.", temp);
+ ignore_rest_of_line();
+ return;
+ }
+ *p = 0;
+ symbolP = symbol_find_or_make(name);
+ *p = c;
+ if (*input_line_pointer == ',')
+ {
+ input_line_pointer++;
+ bss_align = get_absolute_expression();
+ while (local_bss_counter % bss_align != 0)
+ local_bss_counter++;
+ }
+
+ if (!S_IS_DEFINED(symbolP)
+ || (S_GET_SEGMENT(symbolP) == SEG_BSS
+ && S_GET_VALUE(symbolP) == local_bss_counter)) {
+ S_SET_VALUE(symbolP, local_bss_counter);
+ S_SET_SEGMENT(symbolP, SEG_BSS);
+ symbolP->sy_frag = &bss_address_frag;
+ local_bss_counter += temp;
+ } else {
+ as_warn( "Ignoring attempt to re-define symbol from %d. to %d.",
+ S_GET_VALUE(symbolP), local_bss_counter );
+ }
+ while (!is_end_of_line[*input_line_pointer])
+ {
+ input_line_pointer++;
+ }
+
+ return;
+}
+
+/* We have no need to default values of symbols. */
+
+/* ARGSUSED */
+symbolS *md_undefined_symbol(name)
+char *name;
+{
+ return 0;
+} /* md_undefined_symbol() */
+
+/* Parse an operand that is machine-specific.
+ We just return without modifying the expression if we have nothing
+ to do. */
+
+/* ARGSUSED */
+void md_operand(expressionP)
+expressionS *expressionP;
+{
+} /* md_operand() */
+
+/* Round up a section size to the appropriate boundary. */
+long md_section_align(segment, size)
+segT segment;
+long size;
+{
+ return((size + 7) & ~7); /* Round all sects to multiple of 8 */
+} /* md_section_align() */
+
+/* Exactly what point is a PC-relative offset relative TO?
+ On the sparc, they're relative to the address of the offset, plus
+ its size. This gets us to the following instruction.
+ (??? Is this right? FIXME-SOON) */
+long md_pcrel_from(fixP)
+fixS *fixP;
+{
+ return(fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address);
+} /* md_pcrel_from() */
+
+ /* end of tc-m88k.c */
--- /dev/null
+/*
+ * Copyright (c) 1993 Paul Kranenburg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id: md.c,v 1.1 1997/04/23 21:24:41 rahnds Exp $
+ */
+
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <a.out.h>
+#include <stab.h>
+#include <string.h>
+
+#include "ld.h"
+
+/*
+ * Get relocation addend corresponding to relocation record RP
+ * from address ADDR
+ */
+long
+md_get_addend(rp, addr)
+struct relocation_info_m88k *rp;
+unsigned char *addr;
+{
+ return rp->r_addend;
+}
+
+/*
+ * Put RELOCATION at ADDR according to relocation record RP.
+ */
+void
+md_relocate(rp, relocation, addr, relocatable_output)
+struct relocation_info_m88k *rp;
+long relocation;
+unsigned char *addr;
+{
+ if (relocatable_output) {
+ /*
+ * Store relocation where the next link-edit run
+ * will look for it.
+ */
+ rp->r_addend = relocation;
+ return;
+ }
+
+ switch ((rp->r_type)) {
+ case RELOC_LO16:
+ put_short(addr,relocation & 0xffff);
+ break;
+ case RELOC_HI16:
+ put_short(addr,(relocation >>16) & 0xffff);
+ break;
+ case RELOC_PC16:
+ put_short(addr,(relocation)>>2);
+ break;
+ case RELOC_PC26:
+ put_b26(addr,(relocation)>>2);
+ break;
+ case RELOC_32:
+ put_long(addr,relocation);
+ break;
+ case RELOC_IW16:
+ printf ("oops\n"); exit(100);
+ break;
+ case NO_RELOC:
+ break;
+ case RELOC_GLOB_DAT:
+ put_long(addr,relocation);
+ break;
+/*
+ case RELOC_JMP_SLOT:
+ md_make_jmpslot(addr,,
+ break;
+*/
+ case RELOC_RELATIVE:
+ printf("reloc_rel not supported %x\n",addr);
+ exit (15);
+ break;
+
+ default:
+ errx(1, "Unsupported relocation size: %x",
+ (rp->r_type));
+ }
+#ifdef RTLD
+ _cachectl (addr, RELOC_TARGET_SIZE(rp)); /* maintain cache coherency */
+#endif
+}
+
+/*
+ * Machine dependent part of claim_rrs_reloc().
+ * Set RRS relocation type.
+ */
+int
+md_make_reloc(rp, r, type)
+struct relocation_info_m88k *rp, *r;
+int type;
+{
+ r->r_address = rp->r_address;
+ r->r_type = rp->r_type;
+ r->r_jmptable = rp->r_jmptable;
+ r->r_pcrel = rp->r_pcrel;
+ r->r_baserel = rp->r_baserel;
+ r->r_extern = rp->r_extern;
+ r->r_symbolnum = rp->r_symbolnum;
+ r->r_addend = rp->r_addend;
+
+ return 0;
+}
+
+/*
+ * Set up a transfer from jmpslot at OFFSET (relative to the PLT table)
+ * to the binder slot (which is at offset 0 of the PLT).
+ */
+void
+md_make_jmpslot(sp, offset, index)
+jmpslot_t *sp;
+long offset;
+long index;
+{
+ /*
+ * On m68k machines, a long branch offset is relative to
+ * the address of the offset.
+ */
+ u_long fudge = - (sizeof(sp->opcode) + offset);
+
+ sp->opcode = BSRL;
+ sp->addr[0] = fudge >> 16;
+ sp->addr[1] = fudge;
+ sp->reloc_index = index;
+#ifdef RTLD
+ _cachectl (sp, 6); /* maintain cache coherency */
+#endif
+}
+
+/*
+ * Set up a "direct" transfer (ie. not through the run-time binder) from
+ * jmpslot at OFFSET to ADDR. Used by `ld' when the SYMBOLIC flag is on,
+ * and by `ld.so' after resolving the symbol.
+ * On the m68k, we use the BRA instruction which is PC relative, so no
+ * further RRS relocations will be necessary for such a jmpslot.
+ */
+void
+md_fix_jmpslot(sp, offset, addr)
+jmpslot_t *sp;
+long offset;
+u_long addr;
+{
+ u_long fudge = addr - (sizeof(sp->opcode) + offset);
+
+ sp->opcode = BRAL;
+ sp->addr[0] = fudge >> 16;
+ sp->addr[1] = fudge;
+ sp->reloc_index = 0;
+#ifdef RTLD
+ _cachectl (sp, 6); /* maintain cache coherency */
+#endif
+}
+
+/*
+ * Update the relocation record for a RRS jmpslot.
+ */
+void
+md_make_jmpreloc(rp, r, type)
+struct relocation_info_m88k *rp, *r;
+int type;
+{
+ jmpslot_t *sp;
+
+ /*
+ * Fix relocation address to point to the correct
+ * location within this jmpslot.
+ */
+ r->r_address += sizeof(sp->opcode);
+
+#if 0
+ /* Relocation size */
+ r->r_length = 2;
+#endif
+
+ /* Set relocation type */
+ r->r_jmptable = 1;
+#if 0
+ if (type & RELTYPE_RELATIVE)
+ r->r_relative = 1;
+#endif
+
+printf("jmp reloc not supported \n");
+exit (15);
+}
+
+/*
+ * Set relocation type for a RRS GOT relocation.
+ */
+void
+md_make_gotreloc(rp, r, type)
+struct relocation_info_m88k *rp, *r;
+int type;
+{
+#if 0
+ r->r_baserel = 1;
+ if (type & RELTYPE_RELATIVE)
+ r->r_relative = 1;
+
+ /* Relocation size */
+ r->r_length = 2;
+#endif
+printf("got not supported \n");
+exit (15);
+}
+
+/*
+ * Set relocation type for a RRS copy operation.
+ */
+void
+md_make_cpyreloc(rp, r)
+struct relocation_info_m88k *rp, *r;
+{
+ r->r_address = rp->r_address;
+ r->r_type = rp->r_type;
+ r->r_jmptable = rp->r_jmptable;
+ r->r_pcrel = rp->r_pcrel;
+ r->r_baserel = rp->r_baserel;
+ r->r_extern = rp->r_extern;
+ r->r_symbolnum = rp->r_symbolnum;
+ r->r_addend = rp->r_addend;
+}
+
+void
+md_set_breakpoint(where, savep)
+long where;
+long *savep;
+{
+ *savep = *(long *)where;
+ *(short *)where = BPT;
+}
+
+#ifndef MID_M88K
+#define MID_M88K 151
+#endif
+
+#ifndef RTLD
+/*
+ * Initialize (output) exec header such that useful values are
+ * obtained from subsequent N_*() macro evaluations.
+ */
+void
+md_init_header(hp, magic, flags)
+struct exec *hp;
+int magic, flags;
+{
+ if (oldmagic)
+ hp->a_midmag = oldmagic;
+ else
+ N_SETMAGIC((*hp), magic, MID_M88K, flags);
+
+ /* TEXT_START depends on the value of outheader.a_entry. */
+ if (!(link_mode & SHAREABLE))
+ hp->a_entry = PAGSIZ;
+}
+
+/*
+ * Check for acceptable foreign machine Ids
+ */
+int
+md_midcompat(hp)
+struct exec *hp;
+{
+ int mid = N_GETMID(*hp);
+
+ if (mid == MID_M88K )
+ return 1;
+#if 0
+ return (((md_swap_long(hp->a_midmag)&0x00ff0000) >> 16) == MID_SUN020);
+#endif
+ return 0;
+}
+#endif /* RTLD */
+
+
+#ifdef NEED_SWAP
+/*
+ * Byte swap routines for cross-linking.
+ */
+
+void
+md_swapin_exec_hdr(h)
+struct exec *h;
+{
+ int skip = 1;
+
+ if (!N_BADMAG(*h))
+ skip = 1;
+
+ swap_longs((long *)h + skip, sizeof(*h)/sizeof(long) - skip);
+}
+
+void
+md_swapout_exec_hdr(h)
+struct exec *h;
+{
+ /* NetBSD: Always leave magic alone -- unless on little endian*/
+ int skip = 1;
+#if 0
+ if (N_GETMAGIC(*h) == OMAGIC)
+ skip = 0;
+#endif
+
+ swap_longs((long *)h + skip, sizeof(*h)/sizeof(long) - skip);
+}
+
+
+void
+md_swapin_reloc(r, n)
+struct relocation_info_m88k *r;
+int n;
+{
+ struct r_relocation_info_m88k r_r;
+ int *rev_int;
+
+ if (sizeof (struct relocation_info_m88k) != sizeof (struct r_relocation_info_m88k)){
+ fprintf(stderr, "fatal: relocation entry swapin\n");
+ exit(23);
+ }
+ for (; n; n--, r++) {
+
+ memcpy(&r_r,r,sizeof (struct relocation_info_m88k));
+ r->r_address = md_swap_long(r_r.r_address);
+ r->r_addend = md_swap_long(r_r.r_addend);
+ rev_int = (((int *)(&r_r)) +1);
+ *rev_int = md_swap_long(*rev_int);
+
+
+ r->r_symbolnum = r_r.r_symbolnum;
+ r->r_extern = r_r.r_extern;
+ r->r_type = r_r.r_type;
+ switch(r->r_type){
+ case RELOC_LO16:
+ case RELOC_HI16:
+ r->r_baserel =1;
+ break;
+ case RELOC_PC16:
+ case RELOC_PC26:
+ r->r_pcrel =1;
+ r->r_baserel =1;
+ break;
+ case RELOC_32:
+ r->r_jmptable =1;
+ break;
+ case RELOC_IW16:
+ break;
+ }
+#if 0
+printf("%08x: %5x %4x %4x\n",
+ r->r_address,
+ r->r_symbolnum,
+ r->r_extern,
+ r->r_type);
+#endif
+ }
+}
+
+void
+md_swapout_reloc(r, n)
+struct relocation_info_m88k *r;
+int n;
+{
+ int *rev_int;
+ struct r_relocation_info_m88k r_r;
+
+ for (; n; n--, r++) {
+ r_r.r_address = md_swap_long(r->r_address);
+ r_r.r_addend = md_swap_long(r->r_addend);
+ r_r.r_symbolnum = r->r_symbolnum;
+ r_r.r_extern = r->r_extern;
+ r_r.r_type = r->r_type;
+ rev_int = (((int *)(&r_r)) +1);
+ *rev_int = md_swap_long(*rev_int);
+ memcpy(r,&r_r,sizeof (struct relocation_info_m88k));
+ }
+}
+
+void
+md_swapout_jmpslot(j, n)
+jmpslot_t *j;
+int n;
+{
+ for (; n; n--, j++) {
+ j->opcode = md_swap_short(j->opcode);
+ j->addr[0] = md_swap_short(j->addr[0]);
+ j->addr[1] = md_swap_short(j->addr[1]);
+ j->reloc_index = md_swap_short(j->reloc_index);
+ }
+}
+
+#else /* ! defined(NEEDSWAP) */
+void
+md_in_reloc(r, n)
+struct relocation_info_m88k *r;
+int n;
+{
+ for (; n; n--, r++) {
+
+ switch(r->r_type){
+ case RELOC_LO16:
+ case RELOC_HI16:
+/* r->r_baserel =1; */
+ break;
+ case RELOC_PC16:
+ case RELOC_PC26:
+ r->r_pcrel =1;
+/* r->r_baserel =1; */
+ break;
+ case RELOC_32:
+ /* r->r_jmptable =1; */
+ break;
+ case RELOC_IW16:
+ break;
+ case RELOC_GLOB_DAT:
+ break;
+#if 1
+ case RELOC_JMP_SLOT:
+ /* r->r_jmptable =1; */
+ break;
+#endif
+ case RELOC_RELATIVE:
+ r->r_pcrel =1;
+ break;
+ default:
+ printf("error in relocation type %x\n",r->r_type);
+ print_reloc(r);
+ exit(10);
+ }
+/*
+ print_reloc(r);
+*/
+ }
+}
+#endif /* ! NEED_SWAP */
+print_reloc(struct relocation_info_m88k *r)
+{
+ printf ("%6x:\t%4d\t%d\t%d\t%d\t%d\t%x\t",
+ r->r_address,
+ r->r_symbolnum,
+ r->r_pcrel,
+ r->r_extern,
+ r->r_baserel,
+ r->r_jmptable,
+ r->r_addend
+ );
+ switch (r->r_type) {
+ case RELOC_LO16:
+ printf("lo16\n");
+ break;
+ case RELOC_HI16:
+ printf("hi16\n");
+ break;
+ case RELOC_PC16:
+ printf("pc16\n");
+ break;
+ case RELOC_PC26:
+ printf("pc26\n");
+ break;
+ case RELOC_32:
+ printf("reloc32\n");
+ break;
+ case RELOC_IW16:
+ printf("iw16\n");
+ break;
+ case NO_RELOC:
+ printf("none\n");
+ break;
+ case RELOC_GLOB_DAT:
+ printf("glob_dat\n");
+ break;
+ case RELOC_JMP_SLOT:
+ printf("jmp_slot\n");
+ break;
+ case RELOC_RELATIVE:
+ printf("rel\n");
+ break;
+ }
+
+}
--- /dev/null
+/*
+ * $Id: md.h,v 1.1 1997/04/23 21:24:41 rahnds Exp $
+ * - m68k dependent definitions
+ */
+
+#if defined(CROSS_LINKER) && defined(XHOST) && XHOST==i386
+#define NEED_SWAP
+#endif
+
+#if defined(CROSS_LINKER)
+#undef MID_MACHINE
+/* XXX */
+#define MID_MACHINE 151
+#endif
+
+#define MAX_ALIGNMENT (sizeof (double))
+
+#define PAGSIZ 0x1000
+#undef __LDPGSZ
+#define __LDPGSZ 0x1000
+
+#define N_SET_FLAG(ex,f) N_SETMAGIC(ex,N_GETMAGIC(ex), MID_MACHINE, \
+ N_GETFLAG(ex)|(f))
+
+#define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC))
+
+#define N_BADMID(ex) \
+ (N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE && \
+ !md_midcompat(&(ex)))
+
+/*
+ * Should be handled by a.out.h ?
+ */
+#define N_ADJUST(ex) (((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0)
+/*
+#define TEXT_START(ex) (N_TXTADDR(ex) + N_ADJUST(ex))
+*/
+#define TEXT_START(ex) (N_TXTADDR(ex))
+#define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex))
+
+#define RELOC_STATICS_THROUGH_GOT_P(r) (1)
+#define JMPSLOT_NEEDS_RELOC (0)
+
+#define md_got_reloc(r) (0)
+
+#define md_get_rt_segment_addend(r,a) md_get_addend(r,a)
+
+/* Width of a Global Offset Table entry */
+#define GOT_ENTRY_SIZE 4
+typedef long got_t;
+
+typedef struct jmpslot {
+ u_short opcode;
+ u_short addr[2];
+ u_short reloc_index;
+#define JMPSLOT_RELOC_MASK 0xffff
+} jmpslot_t;
+
+#if 1 /* NOT REALLY */
+#define NOP 0x4e71
+#define BSRL 0x61ff /* BSR opcode with long offset */
+#define BRAL 0x60ff /* BRA opcode with long offset */
+#define BPT 0x4e42 /* breakpoint trap: trap #2 */
+#endif
+
+/* m88k */
+enum reloc_type {
+
+ RELOC_LO16, /* lo16(sym) */
+ RELOC_HI16, /* hi16(sym) */
+ RELOC_PC16, /* bb0, bb1, bcnd */
+ RELOC_PC26, /* br, bsr */
+ RELOC_32, /* jump tables, etc */
+ RELOC_IW16, /* global access through linker regs 28 */
+ NO_RELOC,
+ RELOC_GLOB_DAT,
+ RELOC_JMP_SLOT,
+ RELOC_RELATIVE
+};
+#if 0
+struct relocation_info_m88k {
+ unsigned int r_address; /* offset in text or data segment */
+ unsigned int r_symbolnum : 24, /* ordinal number of add symbol */
+ r_extern : 1, /* 1 if need to add symbol to value */
+ r_baserel : 1,
+ r_pcrel : 1,
+ r_jmptable : 1,
+ r_type : 4;
+
+ int r_addend;
+};
+#endif
+struct r_relocation_info_m88k {
+ unsigned int r_address; /* offset in text or data segment */
+ unsigned int r_type : 4,
+ r_jmptable : 1,
+ r_pcrel : 1,
+ r_baserel : 1,
+ r_extern : 1, /* 1 if need to add symbol to value */
+ r_symbolnum : 24; /* ordinal number of add symbol */
+
+ int r_addend;
+};
+#undef relocation_info
+#define relocation_info relocation_info_m88k
+
+
+
+
+/*
+ * Byte swap defs for cross linking
+ */
+
+#if !defined(NEED_SWAP)
+
+#define md_swapin_exec_hdr(h)
+#define md_swapout_exec_hdr(h)
+#define md_swapin_symbols(s,n)
+#define md_swapout_symbols(s,n)
+#define md_swapin_zsymbols(s,n)
+#define md_swapout_zsymbols(s,n)
+#define md_swapin_reloc(r,n) md_in_reloc(r,n)
+#define md_swapout_reloc(r,n)
+#define md_swapin__dynamic(l)
+#define md_swapout__dynamic(l)
+#define md_swapin_section_dispatch_table(l)
+#define md_swapout_section_dispatch_table(l)
+#define md_swapin_so_debug(d)
+#define md_swapout_so_debug(d)
+#define md_swapin_rrs_hash(f,n)
+#define md_swapout_rrs_hash(f,n)
+#define md_swapin_sod(l,n)
+#define md_swapout_sod(l,n)
+#define md_swapout_jmpslot(j,n)
+#define md_swapout_got(g,n)
+#define md_swapin_ranlib_hdr(h,n)
+#define md_swapout_ranlib_hdr(h,n)
+
+#endif /* NEED_SWAP */
+
+#ifdef CROSS_LINKER
+
+#define get_byte(p) ( ((unsigned char *)(p))[0] )
+
+#define get_short(p) ( ( ((unsigned char *)(p))[0] << 8) | \
+ ( ((unsigned char *)(p))[1] ) \
+ )
+#define get_long(p) ( ( ((unsigned char *)(p))[0] << 24) | \
+ ( ((unsigned char *)(p))[1] << 16) | \
+ ( ((unsigned char *)(p))[2] << 8 ) | \
+ ( ((unsigned char *)(p))[3] ) \
+ )
+
+#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
+
+#define put_short(p, v) { ((unsigned char *)(p))[0] = \
+ ((((unsigned long)(v)) >> 8) & 0xff); \
+ ((unsigned char *)(p))[1] = \
+ ((((unsigned long)(v)) ) & 0xff); }
+
+#define put_long(p, v) { ((unsigned char *)(p))[0] = \
+ ((((unsigned long)(v)) >> 24) & 0xff); \
+ ((unsigned char *)(p))[1] = \
+ ((((unsigned long)(v)) >> 16) & 0xff); \
+ ((unsigned char *)(p))[2] = \
+ ((((unsigned long)(v)) >> 8) & 0xff); \
+ ((unsigned char *)(p))[3] = \
+ ((((unsigned long)(v)) ) & 0xff); }
+#define put_b26(p, v) { ((unsigned char *)(p))[0] = \
+ ((((unsigned long)(v)) >> 24) & 0x03 | \
+ ((unsigned char *)(p))[0] & 0xfc); \
+ ((unsigned char *)(p))[1] = \
+ ((((unsigned long)(v)) >> 16) & 0xff); \
+ ((unsigned char *)(p))[2] = \
+ ((((unsigned long)(v)) >> 8) & 0xff); \
+ ((unsigned char *)(p))[3] = \
+ ((((unsigned long)(v)) ) & 0xff); }
+
+
+#ifdef NEED_SWAP
+
+/* Define IO byte swapping routines */
+
+void md_swapin_exec_hdr __P((struct exec *));
+void md_swapout_exec_hdr __P((struct exec *));
+void md_swapin_reloc __P((struct relocation_info *, int));
+void md_swapout_reloc __P((struct relocation_info *, int));
+void md_swapout_jmpslot __P((jmpslot_t *, int));
+
+#define md_swapin_symbols(s,n) swap_symbols(s,n)
+#define md_swapout_symbols(s,n) swap_symbols(s,n)
+#define md_swapin_zsymbols(s,n) swap_zsymbols(s,n)
+#define md_swapout_zsymbols(s,n) swap_zsymbols(s,n)
+#define md_swapin__dynamic(l) swap__dynamic(l)
+#define md_swapout__dynamic(l) swap__dynamic(l)
+#define md_swapin_section_dispatch_table(l) swap_section_dispatch_table(l)
+#define md_swapout_section_dispatch_table(l) swap_section_dispatch_table(l)
+#define md_swapin_so_debug(d) swap_so_debug(d)
+#define md_swapout_so_debug(d) swap_so_debug(d)
+#define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n)
+#define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n)
+#define md_swapin_sod(l,n) swapin_sod(l,n)
+#define md_swapout_sod(l,n) swapout_sod(l,n)
+#define md_swapout_got(g,n) swap_longs((long*)(g),n)
+#define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
+#define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
+
+#define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) )
+
+#define md_swap_long(x) ( (((x) >> 24) & 0xff ) | (((x) >> 8 ) & 0xff00 ) | \
+ (((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000))
+
+#else /* We need not swap, but must pay attention to alignment: */
+
+#define md_swap_short(x) (x)
+#define md_swap_long(x) (x)
+
+#endif /* NEED_SWAP */
+
+#else /* Not a cross linker: use native */
+
+#define md_swap_short(x) (x)
+#define md_swap_long(x) (x)
+
+#define get_byte(where) (*(char *)(where))
+#define get_short(where) (*(short *)(where))
+#define get_long(where) (*(long *)(where))
+
+#define put_byte(where,what) (*(char *)(where) = (what))
+#define put_short(where,what) (*(short *)(where) = (what))
+#define put_long(where,what) (*(long *)(where) = (what))
+#define put_b26(where, what) (*(long *)(where) = ((*(long *)(where))\
+ & ~0x03ffffff) | ((what) & 0x03ffffff))
+
+#endif /* CROSS_LINKER */
+
+#if 0
+#define RELOC_ADDRESS(r) ((r)->r_address)
+#define RELOC_EXTERN_P(r) ((r)->r_extern)
+#define RELOC_TYPE(r) ((r)->r_symbolnum)
+#define RELOC_SYMBOL(r) ((r)->r_symbolnum)
+#define RELOC_MEMORY_SUB_P(r) 0
+#define RELOC_MEMORY_ADD_P(r) 1
+#undef RELOC_ADD_EXTRA
+#define RELOC_PCREL_P(r) ((r)->r_pcrel)
+#define RELOC_VALUE_RIGHTSHIFT(r) 0
+#if defined(RTLD) && defined(SUN_COMPAT)
+#define RELOC_TARGET_SIZE(r) (2) /* !!!!! Sun BUG compatible */
+#else
+#define RELOC_TARGET_SIZE(r) ((r)->r_length)
+#endif
+#define RELOC_TARGET_BITPOS(r) 0
+#define RELOC_TARGET_BITSIZE(r) 32
+
+#define RELOC_JMPTAB_P(r) ((r)->r_jmptable)
+#define RELOC_BASEREL_P(r) ((r)->r_baserel)
+#define RELOC_RELATIVE_P(r) ((r)->r_relative)
+#define RELOC_COPY_P(r) ((r)->r_copy)
+#define RELOC_LAZY_P(r) ((r)->r_jmptable)
+
+#define CHECK_GOT_RELOC(r) (0)
+#endif
+
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