/* tc-hppa.c -- Assemble for the PA
- Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+ Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#define IS_R_SELECT(S) (*(S) == 'R' || *(S) == 'r')
#define IS_L_SELECT(S) (*(S) == 'L' || *(S) == 'l')
+/* Store immediate values of shift/deposit/extract functions. */
+
+#define SAVE_IMMEDIATE(VALUE) \
+ { \
+ if (immediate_check) \
+ { \
+ if (pos == -1) \
+ pos = (VALUE); \
+ else if (len == -1) \
+ len = (VALUE); \
+ } \
+ }
+
/* Insert FIELD into OPCODE starting at bit START. Continue pa_ip
main loop after insertion. */
if (fixp->fx_addsy == 0)
return &no_relocs;
- assert (hppa_fixp != 0);
- assert (section != 0);
+ gas_assert (hppa_fixp != 0);
+ gas_assert (section != 0);
reloc = xmalloc (sizeof (arelent));
switch (fixp->fx_r_type)
{
default:
- assert (n_relocs == 1);
+ gas_assert (n_relocs == 1);
code = *codes[0];
(bfd_reloc_code_real_type) code);
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
- assert (reloc->howto && (unsigned int) code == reloc->howto->type);
+ gas_assert (reloc->howto && (unsigned int) code == reloc->howto->type);
break;
}
#else /* OBJ_SOM */
/* The only time we ever use a R_COMP2 fixup is for the difference
of two symbols. With that in mind we fill in all four
relocs now and break out of the loop. */
- assert (i == 1);
+ gas_assert (i == 1);
relocs[0]->sym_ptr_ptr
= (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;
relocs[0]->howto
int match = FALSE;
int comma = 0;
int cmpltr, nullif, flag, cond, num;
+ int immediate_check = 0, pos = -1, len = -1;
unsigned long opcode;
struct pa_opcode *insn;
/* Look up the opcode in the hash table. */
if ((insn = (struct pa_opcode *) hash_find (op_hash, str)) == NULL)
{
- as_bad ("Unknown opcode: `%s'", str);
+ as_bad (_("Unknown opcode: `%s'"), str);
return;
}
break;
s = expr_end;
CHECK_FIELD (num, 32, 1, 0);
+ SAVE_IMMEDIATE(num);
INSERT_FIELD_AND_CONTINUE (opcode, 32 - num, 0);
/* Handle a 5 bit immediate at 15. */
case 'x':
case 'y':
cmpltr = 0;
+ /* Check immediate values in shift/extract/deposit
+ * instructions if they will give undefined behaviour. */
+ immediate_check = 1;
if (*s == ',')
{
save_s = s++;
break;
s = expr_end;
CHECK_FIELD (num, 31, 0, strict);
+ SAVE_IMMEDIATE(num);
INSERT_FIELD_AND_CONTINUE (opcode, 31 - num, 5);
/* Handle a 6 bit shift count at 20,22:26. */
break;
s = expr_end;
CHECK_FIELD (num, 63, 0, strict);
+ SAVE_IMMEDIATE(num);
num = 63 - num;
opcode |= (num & 0x20) << 6;
INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
break;
s = expr_end;
CHECK_FIELD (num, 64, 1, strict);
+ SAVE_IMMEDIATE(num);
num--;
opcode |= (num & 0x20) << 3;
num = 31 - (num & 0x1f);
break;
s = expr_end;
CHECK_FIELD (num, 64, 1, strict);
+ SAVE_IMMEDIATE(num);
num--;
opcode |= (num & 0x20) << 7;
num = 31 - (num & 0x1f);
break;
s = expr_end;
CHECK_FIELD (num, 31, 0, strict);
+ SAVE_IMMEDIATE(num);
INSERT_FIELD_AND_CONTINUE (opcode, num, 5);
/* Handle a 6 bit bit position at 20,22:26. */
break;
s = expr_end;
CHECK_FIELD (num, 63, 0, strict);
+ SAVE_IMMEDIATE(num);
opcode |= (num & 0x20) << 6;
INSERT_FIELD_AND_CONTINUE (opcode, num & 0x1f, 5);
break;
}
+ if (immediate_check)
+ {
+ if (pos != -1 && len != -1 && pos < len - 1)
+ as_warn (_("Immediates %d and %d will give undefined behavior."),
+ pos, len);
+ }
+
the_insn.opcode = opcode;
}
char *to;
/* The had better be something to assemble. */
- assert (str);
+ gas_assert (str);
/* If we are within a procedure definition, make sure we've
defined a label for the procedure; handle case where the
subsegT save_subseg;
unsigned int unwind;
int reloc;
- char *p;
+ char *name, *p;
+ symbolS *symbolP;
if ((bfd_get_section_flags (stdoutput, now_seg)
& (SEC_ALLOC | SEC_LOAD | SEC_READONLY))
!= (SEC_ALLOC | SEC_LOAD | SEC_READONLY))
return;
+ /* Replace the start symbol with a local symbol that will be reduced
+ to a section offset. This avoids problems with weak functions with
+ multiple definitions, etc. */
+ name = xmalloc (strlen ("L$\001start_")
+ + strlen (S_GET_NAME (call_info->start_symbol))
+ + 1);
+ strcpy (name, "L$\001start_");
+ strcat (name, S_GET_NAME (call_info->start_symbol));
+
+ /* If we have a .procend preceded by a .exit, then the symbol will have
+ already been defined. In that case, we don't want another unwind
+ entry. */
+ symbolP = symbol_find (name);
+ if (symbolP)
+ {
+ xfree (name);
+ return;
+ }
+ else
+ {
+ symbolP = symbol_new (name, now_seg,
+ S_GET_VALUE (call_info->start_symbol), frag_now);
+ gas_assert (symbolP);
+ S_CLEAR_EXTERNAL (symbolP);
+ symbol_table_insert (symbolP);
+ }
+
reloc = R_PARISC_SEGREL32;
save_seg = now_seg;
save_subseg = now_subseg;
/* Relocation info. for start offset of the function. */
md_number_to_chars (p, 0, 4);
fix_new_hppa (frag_now, p - frag_now->fr_literal, 4,
- call_info->start_symbol, (offsetT) 0,
+ symbolP, (offsetT) 0,
(expressionS *) NULL, 0, reloc,
e_fsel, 32, 0, 0);
symbolP = symbol_new (name, now_seg, (valueT) (frag_now_fix () - 4),
frag_now);
- assert (symbolP);
+ gas_assert (symbolP);
S_CLEAR_EXTERNAL (symbolP);
symbol_table_insert (symbolP);
}
{
char *name, *ss_name, c;
char loadable, code_only, comdat, common, dup_common, zero, sort;
- int i, access, space_index, alignment, quadrant, applicable, flags;
+ int i, access_ctr, space_index, alignment, quadrant, applicable, flags;
sd_chain_struct *space;
ssd_chain_struct *ssd;
asection *section;
/* Load default values. */
sort = 0;
- access = 0x7f;
+ access_ctr = 0x7f;
loadable = 1;
comdat = 0;
common = 0;
space_index = pa_def_subspaces[i].space_index;
alignment = pa_def_subspaces[i].alignment;
quadrant = pa_def_subspaces[i].quadrant;
- access = pa_def_subspaces[i].access;
+ access_ctr = pa_def_subspaces[i].access;
sort = pa_def_subspaces[i].sort;
break;
}
{
*input_line_pointer = c;
input_line_pointer++;
- access = get_absolute_expression ();
+ access_ctr = get_absolute_expression ();
}
else if ((strncasecmp (name, "sort", 4) == 0))
{
current_subspace = update_subspace (space, ss_name, loadable,
code_only, comdat, common,
- dup_common, sort, zero, access,
+ dup_common, sort, zero, access_ctr,
space_index, alignment, quadrant,
section);
else
current_subspace = create_new_subspace (space, ss_name, loadable,
code_only, comdat, common,
dup_common, zero, sort,
- access, space_index,
+ access_ctr, space_index,
alignment, quadrant, section);
demand_empty_rest_of_line ();
int dup_common,
int is_zero ATTRIBUTE_UNUSED,
int sort,
- int access,
+ int access_ctr,
int space_index ATTRIBUTE_UNUSED,
int alignment ATTRIBUTE_UNUSED,
int quadrant,
}
#ifdef obj_set_subsection_attributes
- obj_set_subsection_attributes (seg, space->sd_seg, access, sort,
+ obj_set_subsection_attributes (seg, space->sd_seg, access_ctr, sort,
quadrant, comdat, common, dup_common);
#endif
int dup_common,
int sort,
int zero ATTRIBUTE_UNUSED,
- int access,
+ int access_ctr,
int space_index ATTRIBUTE_UNUSED,
int alignment ATTRIBUTE_UNUSED,
int quadrant,
chain_entry = is_defined_subspace (name);
#ifdef obj_set_subsection_attributes
- obj_set_subsection_attributes (section, space->sd_seg, access, sort,
+ obj_set_subsection_attributes (section, space->sd_seg, access_ctr, sort,
quadrant, comdat, common, dup_common);
#endif
return 1;
#endif
- assert (fixp->fx_addsy != NULL);
+ gas_assert (fixp->fx_addsy != NULL);
/* Ensure we emit a relocation for global symbols so that dynamic
linking works. */
projects / deliverable / binutils-gdb.git / blobdiff