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