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64 lines
2.5 KiB
64 lines
2.5 KiB
2 months ago
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From 3f3c1e513bdf53d78adbde7f9d300c2281de21b9 Mon Sep 17 00:00:00 2001
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From: Jens Remus <jremus@linux.ibm.com>
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Date: Thu, 23 Nov 2023 15:44:41 +0100
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Subject: [PATCH] s390: Add brasl edge test cases from ESA to z/Architecture
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Commit: 8f44c72d1f4f
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The ESA opcode test cases for IBM z900 contain a few edge cases. They
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exercise the brasl mnemonic with its largest allowed negative and
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positive offsets. Linux on zSeries in ESA mode executes in 31-bit
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addressing mode. Therefore the ESA test cases are assembled with -m31.
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In 31-bit addressing mode the address computation using those large
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offsets wraps, which is correctly reflected in the disassembly.
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Linux on Z in z/Architecture mode executes in 64-bit addressing mode.
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Therefore the z/Architecture (zarch) test cases are assembled with -m64.
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In 64-bit addressing mode the address computation using those large
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offsets does not necessarily wrap.
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gas/
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* testsuite/gas/s390/zarch-z900.s: Add brasl tests from ESA that
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exercise edge cases.
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* testsuite/gas/s390/zarch-z900.d: Likewise.
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Signed-off-by: Jens Remus <jremus@linux.ibm.com>
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Reviewed-by: Andreas Krebbel <krebbel@linux.ibm.com>
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---
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gas/testsuite/gas/s390/zarch-z900.d | 6 ++++++
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gas/testsuite/gas/s390/zarch-z900.s | 6 ++++++
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2 files changed, 12 insertions(+)
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diff --git a/gas/testsuite/gas/s390/zarch-z900.d b/gas/testsuite/gas/s390/zarch-z900.d
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index 2848dc1eb7c..93aee212785 100644
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--- a/gas/testsuite/gas/s390/zarch-z900.d
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+++ b/gas/testsuite/gas/s390/zarch-z900.d
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@@ -149,4 +149,10 @@ Disassembly of section .text:
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.*: eb 96 5f ff 00 0f [ ]*tracg %r9,%r6,4095\(%r5\)
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.*: e3 95 af ff 00 82 [ ]*xg %r9,4095\(%r5,%r10\)
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.*: b9 82 00 96 [ ]*xgr %r9,%r6
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+ *([\da-f]+): c0 65 00 00 00 00 [ ]*brasl %r6,\1 <foo\+0x\1>
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+ *([\da-f]+): c0 65 00 00 00 00 [ ]*brasl %r6,\1 <foo\+0x\1>
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+ *([\da-f]+): c0 65 80 00 00 00 [ ]*brasl %r6,ffffffff0+\1 <foo\+0xffffffff0+\1>
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+ *([\da-f]+): c0 65 80 00 00 00 [ ]*brasl %r6,ffffffff0+\1 <foo\+0xffffffff0+\1>
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+.*: c0 65 7f ff ff ff [ ]*brasl %r6,1000002d0 <foo\+0x1000002d0>
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+.*: c0 65 7f ff ff ff [ ]*brasl %r6,1000002d6 <foo\+0x1000002d6>
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.*: 07 07 [ ]*nopr %r7
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diff --git a/gas/testsuite/gas/s390/zarch-z900.s b/gas/testsuite/gas/s390/zarch-z900.s
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index 96d27e7b7e2..22fa1da5a30 100644
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--- a/gas/testsuite/gas/s390/zarch-z900.s
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+++ b/gas/testsuite/gas/s390/zarch-z900.s
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@@ -143,3 +143,9 @@ foo:
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tracg %r9,%r6,4095(%r5)
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xg %r9,4095(%r5,%r10)
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xgr %r9,%r6
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+ brasl %r6,.
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+ jasl %r6,.
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+ brasl %r6,.-0x100000000
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+ jasl %r6,.-0x100000000
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+ brasl %r6,.+0xfffffffe
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+ jasl %r6,.+0xfffffffe
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--
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2.47.0
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