+2007-06-11 Sterling Augustine <sterling@tensilica.com>
+ Bob Wilson <bob.wilson@acm.org>
+
+ * elf32-xtensa.c (extend_ebb_bounds_forward): Use renamed
+ XTENSA_PROP_NO_TRANSFORM flag instead of XTENSA_PROP_INSN_NO_TRANSFORM.
+ (extend_ebb_bounds_backward, compute_text_actions): Likewise.
+ (compute_ebb_proposed_actions, coalesce_shared_literal): Likewise.
+ (xtensa_get_property_predef_flags): Likewise.
+ (compute_removed_literals): Pass new arguments to is_removable_literal.
+ (is_removable_literal): Add sec, prop_table and ptblsize arguments.
+ Do not remove literal if the NO_TRANSFORM property flag is set.
+
2007-05-31 Richard Sandiford <rsandifo@nildram.co.uk>
* elfxx-mips.c (mips_elf_initialize_tls_index): When processing a
new_entry = &ebb->ptbl[ebb->end_ptbl_idx + 1];
if (((new_entry->flags & XTENSA_PROP_INSN) == 0)
- || ((new_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) != 0)
+ || ((new_entry->flags & XTENSA_PROP_NO_TRANSFORM) != 0)
|| ((the_entry->flags & XTENSA_PROP_ALIGN) != 0))
break;
new_entry = &ebb->ptbl[ebb->start_ptbl_idx - 1];
if ((new_entry->flags & XTENSA_PROP_INSN) == 0
- || ((new_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) != 0)
+ || ((new_entry->flags & XTENSA_PROP_NO_TRANSFORM) != 0)
|| ((new_entry->flags & XTENSA_PROP_ALIGN) != 0))
return TRUE;
if (new_entry->address + new_entry->size != the_entry->address)
static Elf_Internal_Rela *get_irel_at_offset
(asection *, Elf_Internal_Rela *, bfd_vma);
static bfd_boolean is_removable_literal
- (const source_reloc *, int, const source_reloc *, int);
+ (const source_reloc *, int, const source_reloc *, int, asection *,
+ property_table_entry *, int);
static bfd_boolean remove_dead_literal
(bfd *, asection *, struct bfd_link_info *, Elf_Internal_Rela *,
Elf_Internal_Rela *, source_reloc *, property_table_entry *, int);
the_entry++;
}
- if (the_entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM)
+ if (the_entry->flags & XTENSA_PROP_NO_TRANSFORM)
/* NO_REORDER is OK */
continue;
goto decode_error;
if ((entry->flags & XTENSA_PROP_INSN_NO_DENSITY) == 0
- && (entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) == 0
+ && (entry->flags & XTENSA_PROP_NO_TRANSFORM) == 0
&& can_narrow_instruction (slotbuf, fmt, opcode) != 0)
{
/* Add an instruction narrow action. */
ebb_propose_action (ebb_table, EBB_NO_ALIGN, 0,
ta_narrow_insn, offset, 0, FALSE);
}
- else if ((entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM) == 0
+ else if ((entry->flags & XTENSA_PROP_NO_TRANSFORM) == 0
&& can_widen_instruction (slotbuf, fmt, opcode) != 0
&& ! prev_instr_is_a_loop (ebb->contents,
ebb->content_length, offset))
/* Check if the relocation was from an L32R that is being removed
because a CALLX was converted to a direct CALL, and check if
there are no other relocations to the literal. */
- if (is_removable_literal (rel, i, src_relocs, relax_info->src_count))
+ if (is_removable_literal (rel, i, src_relocs, relax_info->src_count,
+ sec, prop_table, ptblsize))
{
if (!remove_dead_literal (abfd, sec, link_info, internal_relocs,
irel, rel, prop_table, ptblsize))
is_removable_literal (const source_reloc *rel,
int i,
const source_reloc *src_relocs,
- int src_count)
+ int src_count,
+ asection *sec,
+ property_table_entry *prop_table,
+ int ptblsize)
{
const source_reloc *curr_rel;
+ property_table_entry *entry;
+
if (!rel->is_null)
return FALSE;
+ entry = elf_xtensa_find_property_entry (prop_table, ptblsize,
+ sec->vma + rel->r_rel.target_offset);
+ if (entry && (entry->flags & XTENSA_PROP_NO_TRANSFORM))
+ return FALSE;
+
for (++i; i < src_count; ++i)
{
curr_rel = &src_relocs[i];
entry = elf_xtensa_find_property_entry
(prop_table, ptblsize, sec->vma + rel->r_rel.target_offset);
- if (entry && (entry->flags & XTENSA_PROP_INSN_NO_TRANSFORM))
+ if (entry && (entry->flags & XTENSA_PROP_NO_TRANSFORM))
return TRUE;
/* Mark that the literal will be coalesced. */
{
if (xtensa_is_insntable_section (sec))
return (XTENSA_PROP_INSN
- | XTENSA_PROP_INSN_NO_TRANSFORM
+ | XTENSA_PROP_NO_TRANSFORM
| XTENSA_PROP_INSN_NO_REORDER);
if (xtensa_is_littable_section (sec))
return (XTENSA_PROP_LITERAL
- | XTENSA_PROP_INSN_NO_TRANSFORM
+ | XTENSA_PROP_NO_TRANSFORM
| XTENSA_PROP_INSN_NO_REORDER);
return 0;
+2007-06-11 Sterling Augustine <sterling@tensilica.com>
+ Bob Wilson <bob.wilson@acm.org>
+
+ * config/tc-xtensa.c (XTENSA_PROP_INSN_NO_TRANSFORM): Renamed to...
+ (XTENSA_PROP_NO_TRANSFORM): ...this.
+ (frag_flags_struct): Move is_no_transform out of the insn sub-struct.
+ (xtensa_mark_frags_for_org): New.
+ (xtensa_handle_align): Set RELAX_ORG frag subtype for rs_org.
+ (xtensa_post_relax_hook): Call xtensa_mark_frags_for_org.
+ (get_frag_property_flags): Adjust reference to is_no_transform flag.
+ (xtensa_frag_flags_combinable): Likewise.
+ (frag_flags_to_number): Likewise. Use XTENSA_PROP_NO_TRANSFORM.
+ * config/tc-xtensa.h (xtensa_relax_statesE): Add RELAX_ORG.
+
2007-06-06 Paul Brook <paul@codesourcery.com>
* config/tc-arm.c (s_align): Pad code sections appropriately.
/* Instruction only properties about code. */
#define XTENSA_PROP_INSN_NO_DENSITY 0x00000040
#define XTENSA_PROP_INSN_NO_REORDER 0x00000080
-#define XTENSA_PROP_INSN_NO_TRANSFORM 0x00000100
+/* Historically, NO_TRANSFORM was a property of instructions,
+ but it should apply to literals under certain circumstances. */
+#define XTENSA_PROP_NO_TRANSFORM 0x00000100
/* Branch target alignment information. This transmits information
to the linker optimization about the priority of aligning a
unsigned is_data : 1;
unsigned is_unreachable : 1;
+ /* is_specific_opcode implies no_transform. */
+ unsigned is_no_transform : 1;
+
struct
{
unsigned is_loop_target : 1;
unsigned is_no_density : 1;
/* no_longcalls flag does not need to be placed in the object file. */
- /* is_specific_opcode implies no_transform. */
- unsigned is_no_transform : 1;
unsigned is_no_reorder : 1;
static void
+xtensa_mark_frags_for_org (void)
+{
+ segT *seclist;
+
+ /* Walk over each fragment of all of the current segments. If we find
+ a .org frag in any of the segments, mark all frags prior to it as
+ "no transform", which will prevent linker optimizations from messing
+ up the .org distance. This should be done after
+ xtensa_find_unmarked_state_frags, because we don't want to worry here
+ about that function trashing the data we save here. */
+
+ for (seclist = &stdoutput->sections;
+ seclist && *seclist;
+ seclist = &(*seclist)->next)
+ {
+ segT sec = *seclist;
+ segment_info_type *seginfo;
+ fragS *fragP;
+ flagword flags;
+ flags = bfd_get_section_flags (stdoutput, sec);
+ if (flags & SEC_DEBUGGING)
+ continue;
+ if (!(flags & SEC_ALLOC))
+ continue;
+
+ seginfo = seg_info (sec);
+ if (seginfo && seginfo->frchainP)
+ {
+ fragS *last_fragP = seginfo->frchainP->frch_root;
+ for (fragP = seginfo->frchainP->frch_root; fragP;
+ fragP = fragP->fr_next)
+ {
+ /* cvt_frag_to_fill has changed the fr_type of org frags to
+ rs_fill, so use the value as cached in rs_subtype here. */
+ if (fragP->fr_subtype == RELAX_ORG)
+ {
+ while (last_fragP != fragP->fr_next)
+ {
+ last_fragP->tc_frag_data.is_no_transform = TRUE;
+ last_fragP = last_fragP->fr_next;
+ }
+ }
+ }
+ }
+ }
+}
+
+
+static void
xtensa_find_unmarked_state_frags (void)
{
segT *seclist;
as_bad_where (fragP->fr_file, fragP->fr_line,
_("unaligned entry instruction"));
}
+
+ if (linkrelax && fragP->fr_type == rs_org)
+ fragP->fr_subtype = RELAX_ORG;
}
xtensa_move_seg_list_to_beginning (literal_head);
xtensa_find_unmarked_state_frags ();
+ xtensa_mark_frags_for_org ();
xtensa_create_property_segments (get_frag_is_literal,
NULL,
xtensa_frag_flags_init (prop_flags);
if (fragP->tc_frag_data.is_literal)
prop_flags->is_literal = TRUE;
+ if (fragP->tc_frag_data.is_specific_opcode
+ || fragP->tc_frag_data.is_no_transform)
+ prop_flags->is_no_transform = TRUE;
if (fragP->tc_frag_data.is_unreachable)
prop_flags->is_unreachable = TRUE;
else if (fragP->tc_frag_data.is_insn)
prop_flags->insn.is_loop_target = TRUE;
if (fragP->tc_frag_data.is_branch_target)
prop_flags->insn.is_branch_target = TRUE;
- if (fragP->tc_frag_data.is_specific_opcode
- || fragP->tc_frag_data.is_no_transform)
- prop_flags->insn.is_no_transform = TRUE;
if (fragP->tc_frag_data.is_no_density)
prop_flags->insn.is_no_density = TRUE;
if (fragP->tc_frag_data.use_absolute_literals)
if (prop_flags->insn.is_no_density)
num |= XTENSA_PROP_INSN_NO_DENSITY;
- if (prop_flags->insn.is_no_transform)
- num |= XTENSA_PROP_INSN_NO_TRANSFORM;
+ if (prop_flags->is_no_transform)
+ num |= XTENSA_PROP_NO_TRANSFORM;
if (prop_flags->insn.is_no_reorder)
num |= XTENSA_PROP_INSN_NO_REORDER;
if (prop_flags->insn.is_abslit)
if (prop_flags_1->insn.is_no_density !=
prop_flags_2->insn.is_no_density)
return FALSE;
- if (prop_flags_1->insn.is_no_transform !=
- prop_flags_2->insn.is_no_transform)
+ if (prop_flags_1->is_no_transform !=
+ prop_flags_2->is_no_transform)
return FALSE;
if (prop_flags_1->insn.is_no_reorder !=
prop_flags_2->insn.is_no_reorder)
branch is relaxed, then this frag will be converted to a
RELAX_UNREACHABLE frag. */
+ RELAX_ORG,
+ /* This marks the location as having previously been an rs_org frag.
+ rs_org frags are converted to fill-zero frags immediately after
+ relaxation. However, we need to remember where they were so we can
+ prevent the linker from changing the size of any frag between the
+ section start and the org frag. */
+
RELAX_NONE
};
+2007-06-11 Sterling Augustine <sterling@tensilica.com>
+ Bob Wilson <bob.wilson@acm.org>
+
+ * xtensa.h (XTENSA_PROP_INSN_NO_TRANSFORM): Renamed to...
+ (XTENSA_PROP_NO_TRANSFORM): ...this.
+
2007-05-18 Caroline Tice <ctice@apple.com>
* dwarf2.h: (enum dwarf_location_atom): Add new DW_OP,
/* Instruction-only properties about code. */
#define XTENSA_PROP_INSN_NO_DENSITY 0x00000040
#define XTENSA_PROP_INSN_NO_REORDER 0x00000080
-#define XTENSA_PROP_INSN_NO_TRANSFORM 0x00000100
+/* Historically, NO_TRANSFORM was a property of instructions,
+ but it should apply to literals under certain circumstances. */
+#define XTENSA_PROP_NO_TRANSFORM 0x00000100
/* Branch target alignment information. This transmits information
to the linker optimization about the priority of aligning a
+2007-06-11 Sterling Augustine <sterling@tensilica.com>
+ Bob Wilson <bob.wilson@acm.org>
+
+ * emultempl/xtensaelf.em (replace_insn_sec_with_prop_sec): Use renamed
+ XTENSA_PROP_NO_TRANSFORM flag instead of XTENSA_PROP_INSN_NO_TRANSFORM.
+
2007-06-01 Noah Misch <noah@cs.caltech.edu>
Alan Modra <amodra@bigpond.net.au>
for (entry = 0; entry < entry_count; ++entry)
{
unsigned value;
- unsigned flags = (XTENSA_PROP_INSN | XTENSA_PROP_INSN_NO_TRANSFORM
+ unsigned flags = (XTENSA_PROP_INSN | XTENSA_PROP_NO_TRANSFORM
| XTENSA_PROP_INSN_NO_REORDER);
value = bfd_get_32 (abfd, insn_contents + entry * 8 + 0);
bfd_put_32 (abfd, value, prop_contents + entry * 12 + 0);
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