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s390x/ioinst: Add missing alignment checks for IO instructions

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The IO instructions MSCH, SSCH, STSCH, TSCH, STCRW and TPI require
that the second operand address must be aligned on a word boundary.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Thomas Huth 2013-06-21 10:13:42 +02:00 committed by Christian Borntraeger
parent 2e14211476
commit 61bf0dcb2e
1 changed files with 25 additions and 0 deletions
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25
target-s390x/ioinst.c
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@ -157,6 +157,10 @@ int ioinst_handle_msch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
}
trace_ioinst_sch_id("msch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
schib = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
@ -228,6 +232,10 @@ int ioinst_handle_ssch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
}
trace_ioinst_sch_id("ssch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
orig_orb = s390_cpu_physical_memory_map(env, addr, &len, 0);
if (!orig_orb || len != sizeof(*orig_orb)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
@ -272,6 +280,10 @@ int ioinst_handle_stcrw(CPUS390XState *env, uint32_t ipb)
hwaddr len = sizeof(*crw);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
crw = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!crw || len != sizeof(*crw)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
@ -300,6 +312,10 @@ int ioinst_handle_stsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
}
trace_ioinst_sch_id("stsch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
schib = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!schib || len != sizeof(*schib)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
@ -345,6 +361,10 @@ int ioinst_handle_tsch(CPUS390XState *env, uint64_t reg1, uint32_t ipb)
}
trace_ioinst_sch_id("tsch", cssid, ssid, schid);
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
irb = s390_cpu_physical_memory_map(env, addr, &len, 1);
if (!irb || len != sizeof(*irb)) {
program_interrupt(env, PGM_SPECIFICATION, 2);
@ -625,6 +645,11 @@ int ioinst_handle_tpi(CPUS390XState *env, uint32_t ipb)
trace_ioinst("tpi");
addr = decode_basedisp_s(env, ipb);
if (addr & 3) {
program_interrupt(env, PGM_SPECIFICATION, 2);
return -EIO;
}
lowcore = addr ? 0 : 1;
len = lowcore ? 8 /* two words */ : 12 /* three words */;
orig_len = len;