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-rw-r--r--gas/write.c278
1 files changed, 147 insertions, 131 deletions
diff --git a/gas/write.c b/gas/write.c
index 1ec9130..7f2b74d 100644
--- a/gas/write.c
+++ b/gas/write.c
@@ -15,8 +15,9 @@
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
/* This thing should be set up to do byteordering correctly. But... */
@@ -1855,7 +1856,6 @@ write_object_file ()
* these frag addresses may not be the same as final object-file addresses.
*/
-#ifndef md_relax_frag
#ifdef TC_GENERIC_RELAX_TABLE
/* Subroutines of relax_segment. */
@@ -1870,8 +1870,111 @@ is_dnrange (f1, f2)
return 0;
}
+/* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
+
+long
+relax_frag (fragP, stretch)
+ fragS *fragP;
+ long stretch;
+{
+ const relax_typeS *this_type;
+ const relax_typeS *start_type;
+ relax_substateT next_state;
+ relax_substateT this_state;
+ long aim, target, growth;
+ symbolS *symbolP = fragP->fr_symbol;
+ long offset = fragP->fr_offset;
+ /* Recompute was_address by undoing "+= stretch" done by relax_segment. */
+ unsigned long was_address = fragP->fr_address - stretch;
+ unsigned long address = fragP->fr_address;
+ const relax_typeS *table = TC_GENERIC_RELAX_TABLE;
+
+ this_state = fragP->fr_subtype;
+ start_type = this_type = table + this_state;
+ target = offset;
+
+ if (symbolP)
+ {
+#ifndef DIFF_EXPR_OK
+#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
+ know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
+ || (S_GET_SEGMENT (symbolP) == SEG_DATA)
+ || (S_GET_SEGMENT (symbolP) == SEG_BSS)
+ || (S_GET_SEGMENT (symbolP) == SEG_TEXT));
+#endif
+ know (symbolP->sy_frag);
+#endif
+ know (!(S_GET_SEGMENT (symbolP) == absolute_section)
+ || symbolP->sy_frag == &zero_address_frag);
+ target +=
+ S_GET_VALUE (symbolP)
+ + symbolP->sy_frag->fr_address;
+
+ /* If frag has yet to be reached on this pass,
+ assume it will move by STRETCH just as we did.
+ If this is not so, it will be because some frag
+ between grows, and that will force another pass.
+
+ Beware zero-length frags.
+
+ There should be a faster way to do this. */
+
+ if (symbolP->sy_frag->fr_address >= was_address
+ && is_dnrange (fragP, symbolP->sy_frag))
+ {
+ target += stretch;
+ }
+ }
+
+ aim = target - address - fragP->fr_fix;
+#ifdef TC_PCREL_ADJUST
+ /* Currently only the ns32k family needs this */
+ aim += TC_PCREL_ADJUST(fragP);
+/*#else*/
+ /* This machine doesn't want to use pcrel_adjust.
+ In that case, pcrel_adjust should be zero. */
+/* assert (fragP->fr_pcrel_adjust == 0);*/
+#endif
+#ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */
+ md_prepare_relax_scan (fragP, address, aim, this_state, this_type);
+#endif
+
+ if (aim < 0)
+ {
+ /* Look backwards. */
+ for (next_state = this_type->rlx_more; next_state;)
+ if (aim >= this_type->rlx_backward)
+ next_state = 0;
+ else
+ {
+ /* Grow to next state. */
+ this_state = next_state;
+ this_type = table + this_state;
+ next_state = this_type->rlx_more;
+ }
+ }
+ else
+ {
+ /* Look forwards. */
+ for (next_state = this_type->rlx_more; next_state;)
+ if (aim <= this_type->rlx_forward)
+ next_state = 0;
+ else
+ {
+ /* Grow to next state. */
+ this_state = next_state;
+ this_type = table + this_state;
+ next_state = this_type->rlx_more;
+ }
+ }
+
+ growth = this_type->rlx_length - start_type->rlx_length;
+ if (growth != 0)
+ fragP->fr_subtype = this_state;
+ return growth;
+}
+
#endif /* defined (TC_GENERIC_RELAX_TABLE) */
-#endif /* ! defined (md_relax_frag) */
/* Relax_align. Advance location counter to next address that has 'alignment'
lowest order bits all 0s, return size of adjustment made. */
@@ -1976,8 +2079,6 @@ relax_segment (segment_frag_root, segment)
unsigned long was_address;
long offset;
symbolS *symbolP;
- long target;
- long after;
was_address = fragP->fr_address;
address = fragP->fr_address += stretch;
@@ -2062,37 +2163,40 @@ relax_segment (segment_frag_root, segment)
break;
case rs_org:
- target = offset;
+ {
+ long target = offset;
+ long after;
- if (symbolP)
- {
+ if (symbolP)
+ {
#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
- know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (S_GET_SEGMENT (symbolP) == SEG_DATA)
- || (S_GET_SEGMENT (symbolP) == SEG_TEXT)
- || S_GET_SEGMENT (symbolP) == SEG_BSS);
- know (symbolP->sy_frag);
- know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (symbolP->sy_frag == &zero_address_frag));
-#endif
- target += S_GET_VALUE (symbolP)
- + symbolP->sy_frag->fr_address;
- } /* if we have a symbol */
-
- know (fragP->fr_next);
- after = fragP->fr_next->fr_address;
- growth = target - after;
- if (growth < 0)
- {
- /* Growth may be negative, but variable part of frag
- cannot have fewer than 0 chars. That is, we can't
- .org backwards. */
- as_bad ("attempt to .org backwards ignored");
- growth = 0;
- }
+ know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
+ || (S_GET_SEGMENT (symbolP) == SEG_DATA)
+ || (S_GET_SEGMENT (symbolP) == SEG_TEXT)
+ || S_GET_SEGMENT (symbolP) == SEG_BSS);
+ know (symbolP->sy_frag);
+ know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
+ || (symbolP->sy_frag == &zero_address_frag));
+#endif
+ target += S_GET_VALUE (symbolP)
+ + symbolP->sy_frag->fr_address;
+ } /* if we have a symbol */
- growth -= stretch; /* This is an absolute growth factor */
- break;
+ know (fragP->fr_next);
+ after = fragP->fr_next->fr_address;
+ growth = target - after;
+ if (growth < 0)
+ {
+ /* Growth may be negative, but variable part of frag
+ cannot have fewer than 0 chars. That is, we can't
+ .org backwards. */
+ as_bad ("attempt to .org backwards ignored");
+ growth = 0;
+ }
+
+ growth -= stretch; /* This is an absolute growth factor */
+ break;
+ }
case rs_space:
if (symbolP)
@@ -2117,98 +2221,8 @@ relax_segment (segment_frag_root, segment)
#else
#ifdef TC_GENERIC_RELAX_TABLE
/* The default way to relax a frag is to look through
- md_relax_table. */
- {
- const relax_typeS *this_type;
- const relax_typeS *start_type;
- relax_substateT next_state;
- relax_substateT this_state;
- long aim;
- const relax_typeS *table = TC_GENERIC_RELAX_TABLE;
-
- this_state = fragP->fr_subtype;
- start_type = this_type = table + this_state;
- target = offset;
-
- if (symbolP)
- {
-#ifndef DIFF_EXPR_OK
-#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
- know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (S_GET_SEGMENT (symbolP) == SEG_DATA)
- || (S_GET_SEGMENT (symbolP) == SEG_BSS)
- || (S_GET_SEGMENT (symbolP) == SEG_TEXT));
-#endif
- know (symbolP->sy_frag);
-#endif
- know (!(S_GET_SEGMENT (symbolP) == absolute_section)
- || symbolP->sy_frag == &zero_address_frag);
- target +=
- S_GET_VALUE (symbolP)
- + symbolP->sy_frag->fr_address;
-
- /* If frag has yet to be reached on this pass,
- assume it will move by STRETCH just as we did.
- If this is not so, it will be because some frag
- between grows, and that will force another pass.
-
- Beware zero-length frags.
-
- There should be a faster way to do this. */
-
- if (symbolP->sy_frag->fr_address >= was_address
- && is_dnrange (fragP, symbolP->sy_frag))
- {
- target += stretch;
- }
- }
-
- aim = target - address - fragP->fr_fix;
-#ifdef TC_PCREL_ADJUST
- /* Currently only the ns32k family needs this */
- aim += TC_PCREL_ADJUST(fragP);
-#else
- /* This machine doesn't want to use pcrel_adjust.
- In that case, pcrel_adjust should be zero. */
- assert (fragP->fr_pcrel_adjust == 0);
-#endif
-
- if (aim < 0)
- {
- /* Look backwards. */
- for (next_state = this_type->rlx_more; next_state;)
- if (aim >= this_type->rlx_backward)
- next_state = 0;
- else
- {
- /* Grow to next state. */
- this_state = next_state;
- this_type = table + this_state;
- next_state = this_type->rlx_more;
- }
- }
- else
- {
-#ifdef M68K_AIM_KLUDGE
- M68K_AIM_KLUDGE (aim, this_state, this_type);
-#endif
- /* Look forwards. */
- for (next_state = this_type->rlx_more; next_state;)
- if (aim <= this_type->rlx_forward)
- next_state = 0;
- else
- {
- /* Grow to next state. */
- this_state = next_state;
- this_type = table + this_state;
- next_state = this_type->rlx_more;
- }
- }
-
- growth = this_type->rlx_length - start_type->rlx_length;
- if (growth != 0)
- fragP->fr_subtype = this_state;
- }
+ TC_GENERIC_RELAX_TABLE. */
+ growth = relax_frag (fragP, stretch);
#endif /* TC_GENERIC_RELAX_TABLE */
#endif
break;
@@ -2550,10 +2564,12 @@ fixup_segment (fixP, this_segment_type)
if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0)
{
- valueT mask = 0;
- if (size < sizeof (mask))
+ if (size < sizeof (valueT))
{
+ valueT mask, hibit;
+
/* set all bits to one */
+ mask = 0;
mask--;
/* Technically, combining these produces an undefined result
if size is sizeof (valueT), though I think these two
@@ -2562,12 +2578,12 @@ fixup_segment (fixP, this_segment_type)
the host architecture. */
mask <<= size * 4;
mask <<= size * 4;
+ hibit = (valueT) 1 << (size * 8 - 1);
if (((add_number & mask) != 0
|| (fixP->fx_signed
- && (add_number & (mask >> 1)) != 0))
+ && (add_number & hibit) != 0))
&& ((add_number & mask) != mask
- || (fixP->fx_signed
- && (add_number & (mask >> 1)) == 0)))
+ || (add_number & hibit) == 0))
{
char buf[50], buf2[50];
sprint_value (buf, fragP->fr_address + where);
generated by cgit v1.1 at 2024-11-25 00:20:53 +0000