IBM zSystems: Accept (. - 0x100000000) PCRel32 operands
as does not accept instructions like brasl %r0,.-0x100000000, because
of two problems with the generic overflow check:
1. PCRel32 operands are signed, but are treated as unsigned.
2. The allowed range for these operands is [-(1 << 32), (1 << 32) - 1],
and not [-(1 << 31), (1 << 31) - 1].
Fix both by disabling the generic overflow check - it's not needed,
because s390_insert_operand () performs its own.
gas/
* config/tc-s390.c (md_gather_operands): Set fx_no_overflow.
* testsuite/gas/s390/s390.exp: Add zarch-z900-err.
* testsuite/gas/s390/esa-z900.d: New test.
* testsuite/gas/s390/esa-z900.s: New test.
* testsuite/gas/s390/zarch-z900-err.l: New test.
* testsuite/gas/s390/zarch-z900-err.s: New test.
diff --git a/gas/config/tc-s390.c b/gas/config/tc-s390.c
index 4af635b..4fd4f1f 100644
--- a/gas/config/tc-s390.c
+++ b/gas/config/tc-s390.c
@@ -1619,6 +1619,7 @@
md_apply_fix. */
for (i = 0; i < fc; i++)
{
+ fixS *fixP;
if (fixups[i].opindex < 0)
{
@@ -1633,7 +1634,6 @@
if (fixups[i].reloc != BFD_RELOC_UNUSED)
{
reloc_howto_type *reloc_howto;
- fixS *fixP;
int size;
reloc_howto = bfd_reloc_type_lookup (stdoutput, fixups[i].reloc);
@@ -1661,10 +1661,14 @@
fixP->fx_pcrel_adjust = operand->shift / 8;
}
else
- fix_new_exp (frag_now, f - frag_now->fr_literal, 4, &fixups[i].exp,
- (operand->flags & S390_OPERAND_PCREL) != 0,
- ((bfd_reloc_code_real_type)
- (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
+ fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, 4,
+ &fixups[i].exp,
+ (operand->flags & S390_OPERAND_PCREL) != 0,
+ ((bfd_reloc_code_real_type)
+ (fixups[i].opindex + (int) BFD_RELOC_UNUSED)));
+ /* s390_insert_operand () does the range checking. */
+ if (operand->flags & S390_OPERAND_PCREL)
+ fixP->fx_no_overflow = 1;
}
return str;
}
diff --git a/gas/testsuite/gas/s390/esa-z900.d b/gas/testsuite/gas/s390/esa-z900.d
index 42f408b..86db064 100644
--- a/gas/testsuite/gas/s390/esa-z900.d
+++ b/gas/testsuite/gas/s390/esa-z900.d
@@ -52,6 +52,10 @@
.*: c0 f4 00 00 00 00 [ ]*jg 102 <foo\+0x102>
.*: c0 65 00 00 00 00 [ ]*brasl %r6,108 <foo\+0x108>
.*: c0 65 00 00 00 00 [ ]*brasl %r6,10e <foo\+0x10e>
+.*: c0 65 80 00 00 00 [ ]*brasl %r6,114 <foo\+0x114>
+.*: c0 65 80 00 00 00 [ ]*brasl %r6,11a <foo\+0x11a>
+.*: c0 65 7f ff ff ff [ ]*brasl %r6,11e <foo\+0x11e>
+.*: c0 65 7f ff ff ff [ ]*brasl %r6,124 <foo\+0x124>
.*: 01 0b [ ]*tam
.*: 01 0c [ ]*sam24
.*: 01 0d [ ]*sam31
@@ -62,7 +66,7 @@
.*: b9 97 00 69 [ ]*dlr %r6,%r9
.*: b9 98 00 69 [ ]*alcr %r6,%r9
.*: b9 99 00 69 [ ]*slbr %r6,%r9
-.*: c0 60 00 00 00 00 [ ]*larl %r6,136 <foo\+0x136>
+.*: c0 60 00 00 00 00 [ ]*larl %r6,14e <foo\+0x14e>
.*: e3 65 af ff 00 1e [ ]*lrv %r6,4095\(%r5,%r10\)
.*: e3 65 af ff 00 1f [ ]*lrvh %r6,4095\(%r5,%r10\)
.*: e3 65 af ff 00 3e [ ]*strv %r6,4095\(%r5,%r10\)
diff --git a/gas/testsuite/gas/s390/esa-z900.s b/gas/testsuite/gas/s390/esa-z900.s
index 7a00616..74bbf61 100644
--- a/gas/testsuite/gas/s390/esa-z900.s
+++ b/gas/testsuite/gas/s390/esa-z900.s
@@ -46,6 +46,10 @@
brul .
brasl %r6,.
jasl %r6,.
+ brasl %r6,.-0x100000000
+ jasl %r6,.-0x100000000
+ brasl %r6,.+0xfffffffe
+ jasl %r6,.+0xfffffffe
tam
sam24
sam31
diff --git a/gas/testsuite/gas/s390/s390.exp b/gas/testsuite/gas/s390/s390.exp
index d03555a..356fba9 100644
--- a/gas/testsuite/gas/s390/s390.exp
+++ b/gas/testsuite/gas/s390/s390.exp
@@ -20,6 +20,7 @@
# }
run_dump_test "zarch-z900" "{as -m64}"
+ run_list_test "zarch-z900-err" "-march=z900"
run_dump_test "zarch-z990" "{as -m64} {as -march=z990}"
run_list_test "zarch-z990-symbol-lay" "-m64 -march=z990"
run_dump_test "zarch-z9-109" "{as -m64} {as -march=z9-109}"
diff --git a/gas/testsuite/gas/s390/zarch-z900-err.l b/gas/testsuite/gas/s390/zarch-z900-err.l
new file mode 100644
index 0000000..7299419
--- /dev/null
+++ b/gas/testsuite/gas/s390/zarch-z900-err.l
@@ -0,0 +1,3 @@
+.*: Assembler messages:
+.*:3: Error: operand out of range \(fffffffefffffffe not between 0 and 4294967294\)
+.*:4: Error: operand out of range \(0000000100000000 not between 0 and 4294967294\)
diff --git a/gas/testsuite/gas/s390/zarch-z900-err.s b/gas/testsuite/gas/s390/zarch-z900-err.s
new file mode 100644
index 0000000..96fef2a
--- /dev/null
+++ b/gas/testsuite/gas/s390/zarch-z900-err.s
@@ -0,0 +1,4 @@
+.text
+foo:
+ brasl %r6,.-0x100000002
+ brasl %r6,.+0x100000000
