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linux-user/host/s390: Add vector instructions to host_signal_write()

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The new noexec test fails on s390x with "unexpected SEGV". This test
overwrites code using libc's memcpy(), which uses VSTL instruction.
host_signal_write() does not recognize it, which causes SEGV to be
incorrectly forwarded to the test.

Add all vector instructions that write to memory to
host_signal_write().

Fixes: ab12c95d3f ("target/s390x: Make translator stop before the end of a page")
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20220920113907.334144-1-iii@linux.ibm.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Ilya Leoshkevich 2022-09-20 13:39:07 +02:00 committed by Thomas Huth
parent 131aafa7ef
commit ab9ccfa850
1 changed files with 25 additions and 0 deletions
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25
linux-user/include/host/s390/host-signal.h
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@ -87,6 +87,31 @@ static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
return true;
}
break;
case 0xe6:
switch (pinsn[2] & 0xff) {
case 0x09: /* VSTEBRH */
case 0x0a: /* VSTEBRG */
case 0x0b: /* VSTEBRF */
case 0x0e: /* VSTBR */
case 0x0f: /* VSTER */
case 0x3f: /* VSTRLR */
return true;
}
break;
case 0xe7:
switch (pinsn[2] & 0xff) {
case 0x08: /* VSTEB */
case 0x09: /* VSTEH */
case 0x0a: /* VSTEG */
case 0x0b: /* VSTEF */
case 0x0e: /* VST */
case 0x1a: /* VSCEG */
case 0x1b: /* VSCEF */
case 0x3e: /* VSTM */
case 0x3f: /* VSTL */
return true;
}
break;
case 0xeb: /* RSY format insns */
switch (pinsn[2] & 0xff) {
case 0x14: /* CSY */