/* tc-alpha.c - Processor-specific code for the DEC Alpha AXP CPU.
- Copyright (C) 1989, 93, 94, 95, 96, 97, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1989, 93-98, 1999 Free Software Foundation, Inc.
Contributed by Carnegie Mellon University, 1993.
Written by Alessandro Forin, based on earlier gas-1.38 target CPU files.
Modified by Ken Raeburn for gas-2.x and ECOFF support.
Modified by Richard Henderson for ELF support.
- Modified by Klaus K"ampf for EVAX (openVMS/Alpha) support.
+ Modified by Klaus K"ampf for EVAX (OpenVMS/Alpha) support.
This file is part of GAS, the GNU Assembler.
/* Two extra symbols we want to see in our input. This is a blatent
misuse of the expressionS.X_op field. */
-#define O_pregister (O_max+1) /* O_register, but in parentheses */
-#define O_cpregister (O_pregister+1) /* + a leading comma */
+#define O_pregister ((operatorT) (O_max+1)) /* O_register, in parentheses */
+#define O_cpregister ((operatorT) (O_pregister+1)) /* + a leading comma */
+#define O_alpha_max ((operatorT) (O_cpregister+1))
/* Macros for extracting the type and number of encoded register tokens */
{ "21066", AXP_OPCODE_BASE|AXP_OPCODE_EV4 },
{ "21068", AXP_OPCODE_BASE|AXP_OPCODE_EV4 },
{ "21164", AXP_OPCODE_BASE|AXP_OPCODE_EV5 },
- /* Do we have CIX extension here? */
{ "21164a", AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX },
- /* Still same PALcodes? */
{ "21164pc", (AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX
|AXP_OPCODE_MAX) },
- /* All new PALcodes? Extras? */
- { "21264", (AXP_OPCODE_BASE|AXP_OPCODE_BWX
- |AXP_OPCODE_CIX|AXP_OPCODE_MAX) },
+ { "21264", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX
+ |AXP_OPCODE_MAX|AXP_OPCODE_CIX) },
{ "ev4", AXP_OPCODE_BASE },
{ "ev45", AXP_OPCODE_BASE },
{ "ev5", AXP_OPCODE_BASE },
{ "ev56", AXP_OPCODE_BASE|AXP_OPCODE_BWX },
{ "pca56", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX },
- { "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_CIX|AXP_OPCODE_MAX },
+ { "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX },
{ "all", AXP_OPCODE_BASE },
{ 0 }
{
unsigned int i;
+ /* Verify that X_op field is wide enough. */
+ {
+ expressionS e;
+ e.X_op = O_alpha_max;
+ assert (e.X_op == O_alpha_max);
+ }
+
/* Create the opcode hash table */
alpha_opcode_hash = hash_new ();
int ntok, opnamelen, trunclen;
/* split off the opcode */
- opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/48");
+ opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/468");
trunclen = (opnamelen < sizeof (opname) - 1
? opnamelen
: sizeof (opname) - 1);
Alpha options:\n\
-32addr treat addresses as 32-bit values\n\
-F lack floating point instructions support\n\
--m21064 | -m21066 | -m21164 | -m21164a\n\
--mev4 | -mev45 | -mev5 | -mev56 | -mall\n\
- specify variant of Alpha architecture\n"),
+-mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mall\n\
+ specify variant of Alpha architecture\n\
+-m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264\n\
+ these variants include PALcode opcodes\n"),
stream);
#ifdef OBJ_EVAX
fputs (_("\
#endif
do_reloc_gp:
- fixP->fx_addsy = section_symbol (absolute_section);
+ fixP->fx_addsy = section_symbol (now_seg);
md_number_to_chars (fixpos, value, 2);
break;
Therefore they must be completely resolved as constants. */
if (fixP->fx_addsy != 0
- && fixP->fx_addsy->bsym->section != absolute_section)
+ && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section)
as_bad_where (fixP->fx_file, fixP->fx_line,
_("non-absolute expression in constant field"));
arelent *reloc;
reloc = (arelent *) xmalloc (sizeof (arelent));
- reloc->sym_ptr_ptr = &fixp->fx_addsy->bsym;
+ 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;
/* Make sure none of our internal relocations make it this far.
* at assembly time. bfd_perform_reloc doesn't know about this sort
* of thing, and as a result we need to fake it out here.
*/
- if (S_IS_EXTERN (fixp->fx_addsy) && !S_IS_COMMON(fixp->fx_addsy))
- reloc->addend -= fixp->fx_addsy->bsym->value;
+ if ((S_IS_EXTERN (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy))
+ && !S_IS_COMMON(fixp->fx_addsy))
+ reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value;
#endif
}
case O_pregister:
case O_cpregister:
goto match_failed;
+
+ default:
+ break;
}
break;
case O_pregister:
case O_cpregister:
goto match_failed;
+
+ default:
+ break;
}
++tokidx;
break;
/* Apply the fixups in order */
for (i = 0; i < insn->nfixups; ++i)
{
+ const struct alpha_operand *operand;
struct alpha_fixup *fixup = &insn->fixups[i];
int size, pcrel;
fixS *fixP;
/* Some fixups are only used internally and so have no howto */
if ((int)fixup->reloc < 0)
- size = 4, pcrel = 0;
+ {
+ operand = &alpha_operands[-(int)fixup->reloc];
+ size = 4;
+ pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0);
+ }
#ifdef OBJ_ELF
/* These relocation types are only used internally. */
else if (fixup->reloc == BFD_RELOC_ALPHA_GPDISP_HI16
case BFD_RELOC_GPREL32:
fixP->fx_no_overflow = 1;
break;
+
default:
+ if ((int)fixup->reloc < 0)
+ {
+ if (operand->flags & AXP_OPERAND_NOOVERFLOW)
+ fixP->fx_no_overflow = 1;
+ }
break;
}
}
expressionS newtok[3];
expressionS addend;
- /* We're going to need this symbol in md_apply_fix(). */
- (void) section_symbol (absolute_section);
-
#ifdef OBJ_ECOFF
if (regno (tok[2].X_add_number) == AXP_REG_PV)
ecoff_set_gp_prolog_size (0);
addend = tok[1];
#ifdef OBJ_ECOFF
- assert (addend.X_op == O_constant);
+ if (addend.X_op != O_constant)
+ as_bad (_("can not resolve expression"));
addend.X_op = O_symbol;
addend.X_add_symbol = alpha_gp_symbol;
#endif
segment_info_type *seginfo = seg_info (alpha_link_section);
fixS *fixp;
- offset = -basesym->sy_obj;
+ offset = - *symbol_get_obj (basesym);
/* @@ This assumes all entries in a given section will be of the same
size... Probably correct, but unwise to rely on. */
/* XXX: Disable this .got minimizing optimization so that we can get
better instruction offset knowledge in the compiler. This happens
very infrequently anyway. */
- if (1 || !range_signed_32 (addend)
- && (alpha_noat_on || targreg == AXP_REG_AT))
+ if (1 || (!range_signed_32 (addend)
+ && (alpha_noat_on || targreg == AXP_REG_AT)))
{
newtok[1] = *exp;
addend = 0;
break;
default:
- abort();
+ as_bad (_("can't handle expression"));
+ addend = 0;
+ break;
}
if (!range_signed_32 (addend))
}
insn.nfixups++;
insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE;
- insn.fixups[0].exp.X_op = O_constant;
+ insn.fixups[0].exp.X_op = O_symbol;
+ insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg);
insn.fixups[0].exp.X_add_number = 1;
emit_lituse = 0;
}
insn.nfixups++;
insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE;
- insn.fixups[0].exp.X_op = O_constant;
+ insn.fixups[0].exp.X_op = O_symbol;
+ insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg);
insn.fixups[0].exp.X_add_number = 1;
}
}
insn.nfixups++;
insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE;
- insn.fixups[0].exp.X_op = O_constant;
+ insn.fixups[0].exp.X_op = O_symbol;
+ insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg);
insn.fixups[0].exp.X_add_number = 1;
}
}
insn.nfixups++;
insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE;
- insn.fixups[0].exp.X_op = O_constant;
+ insn.fixups[0].exp.X_op = O_symbol;
+ insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg);
insn.fixups[0].exp.X_add_number = 3;
}
p = frag_more (temp);
new_seg->flags |= SEC_IS_COMMON;
if (! S_IS_DEFINED (symbolP))
- symbolP->bsym->section = new_seg;
+ S_SET_SEGMENT (symbolP, new_seg);
#else
S_SET_VALUE (symbolP, (valueT) temp);
#endif
subseg_set (current_section, current_subsec);
#endif
- know (symbolP->sy_frag == &zero_address_frag);
+ know (symbol_get_frag (symbolP) == &zero_address_frag);
demand_empty_rest_of_line ();
}
as_warn (_("nested .ent directives"));
sym = symbol_find_or_make (name);
- sym->bsym->flags |= BSF_FUNCTION;
+ symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
alpha_cur_ent_sym = sym;
/* The .ent directive is sometimes followed by a number. Not sure
/* Create an expression to calculate the size of the function. */
if (sym)
{
- sym->sy_obj.size = (expressionS *) xmalloc (sizeof (expressionS));
- sym->sy_obj.size->X_op = O_subtract;
- sym->sy_obj.size->X_add_symbol
+ symbol_get_obj (sym)->size =
+ (expressionS *) xmalloc (sizeof (expressionS));
+ symbol_get_obj (sym)->size->X_op = O_subtract;
+ symbol_get_obj (sym)->size->X_add_symbol
= symbol_new ("L0\001", now_seg, frag_now_fix (), frag_now);
- sym->sy_obj.size->X_op_symbol = sym;
- sym->sy_obj.size->X_add_number = 0;
+ symbol_get_obj (sym)->size->X_op_symbol = sym;
+ symbol_get_obj (sym)->size->X_add_number = 0;
}
alpha_cur_ent_sym = NULL;
ecoff_directive_mask (0);
}
else
- ignore_rest_of_line ();
+ discard_rest_of_line ();
}
static void
if (ECOFF_DEBUGGING)
ecoff_directive_frame (0);
else
- ignore_rest_of_line ();
+ discard_rest_of_line ();
}
static void
}
symbol = make_expr_symbol (&symexpr);
- symbol->bsym->flags |= BSF_FUNCTION;
+ symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION;
alpha_evax_proc.symbol = symbol;
demand_empty_rest_of_line ();
return;
}
- alpha_evax_proc.symbol->sy_obj = (valueT)seginfo->literal_pool_size;
+ *symbol_get_obj (alpha_evax_proc.symbol) =
+ (valueT) seginfo->literal_pool_size;
expression (&exp);
if (exp.X_op != O_symbol)
entry_sym = make_expr_symbol (&exp);
/* Save bfd symbol of proc desc in function symbol. */
- alpha_evax_proc.symbol->bsym->udata.p = (PTR)entry_sym->bsym;
+ symbol_get_bfdsym (alpha_evax_proc.symbol)->udata.p
+ = symbol_get_bfdsym (entry_sym);
SKIP_WHITESPACE ();
if (*input_line_pointer++ != ',')
extern char *demand_copy_string PARAMS ((int *lenP));
sprintf (case_hack, "<CASE:%01d%01d>",
- alpha_flag_hash_long_names, alpha_flag_show_after_trunc);
+ alpha_flag_hash_long_names, alpha_flag_show_after_trunc);
s = symbol_find_or_make (case_hack);
- s->bsym->flags |= BSF_FILE;
+ symbol_get_bfdsym (s)->flags |= BSF_FILE;
get_absolute_expression ();
s = symbol_find_or_make (demand_copy_string (&length));
- s->bsym->flags |= BSF_FILE;
+ symbol_get_bfdsym (s)->flags |= BSF_FILE;
demand_empty_rest_of_line ();
return;
input_line_pointer++;
temp = get_absolute_expression ();
}
- /* symbolP->sy_other = (signed char) temp; */
+ /* *symbol_get_obj (symbolP) = (signed char) temp; */
as_warn (_("unhandled: .proc %s,%d"), name, temp);
demand_empty_rest_of_line ();
}
if (label != NULL)
{
assert (S_GET_SEGMENT (label) == now_seg);
- label->sy_frag = frag_now;
+ symbol_set_frag (label, frag_now);
S_SET_VALUE (label, (valueT) frag_now_fix ());
}
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