Add support for s390 specific system call s390_sthyi
for 31 bit and 64 bit.
Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxxxxxxx>
---
include/syscalls-s390.h | 2 +-
include/syscalls-s390x.h | 2 +-
syscalls/s390x/s390_sthyi.c | 60 +++++++++++++++++++++++++++++++++++++++++++++
syscalls/syscalls.h | 1 +
4 files changed, 63 insertions(+), 2 deletions(-)
create mode 100644 syscalls/s390x/s390_sthyi.c
diff --git a/include/syscalls-s390.h b/include/syscalls-s390.h
index ad2f88c6..07706650 100644
--- a/include/syscalls-s390.h
+++ b/include/syscalls-s390.h
@@ -391,5 +391,5 @@ struct syscalltable syscalls_s390[] = {
{ .entry = &syscall_pwritev2 },
{ .entry = &syscall_s390_guarded_storage },
{ .entry = &syscall_statx },
- { .entry = &syscall_ni_syscall }, /* TODO: s390_sthyi svc */
+ { .entry = &syscall_s390_sthyi },
};
diff --git a/include/syscalls-s390x.h b/include/syscalls-s390x.h
index a83974e4..66f3bc56 100644
--- a/include/syscalls-s390x.h
+++ b/include/syscalls-s390x.h
@@ -391,5 +391,5 @@ struct syscalltable syscalls_s390x[] = {
{ .entry = &syscall_pwritev2 },
{ .entry = &syscall_s390_guarded_storage },
{ .entry = &syscall_statx },
- { .entry = &syscall_ni_syscall }, /* TODO: s390_sthyi svc */
+ { .entry = &syscall_s390_sthyi },
};
diff --git a/syscalls/s390x/s390_sthyi.c b/syscalls/s390x/s390_sthyi.c
new file mode 100644
index 00000000..9bf488a9
--- /dev/null
+++ b/syscalls/s390x/s390_sthyi.c
@@ -0,0 +1,60 @@
+/*
+ * int s390_sthyi(unsigned long function_code, void *resp_buffer,
+ * uint64_t *return_code, unsigned long flags);
+ */
+
+#include <asm/sthyi.h>
+
+#include "arch.h"
+#include "random.h"
+#include "sanitise.h"
+
+static unsigned long syscall_s390_sthyi_arg1[] = {
+ STHYI_FC_CP_IFL_CAP,
+ -1
+};
+
+static u64 syscall_s390_sthyi_return_code;
+
+/* Allocate buffer. */
+static void sanitise_s390_sthyi(struct syscallrecord *rec)
+{
+ size_t size = RAND_RANGE(0, page_size);
+ void *addr = size ? malloc(size) : NULL;
+
+ rec->a2 = (unsigned long)addr;
+
+ /* Use NULL, random or valid address */
+ switch (rnd() % 3) {
+ case 0: rec->a3 = 0;
+ break;
+ case 1: rec->a3 = rnd();
+ break;
+ case 2: rec->a3 = (unsigned long)&syscall_s390_sthyi_return_code;
+ break;
+ }
+}
+
+/* Free buffer, freeptr takes care of NULL */
+static void post_s390_sthyi(struct syscallrecord *rec)
+{
+ freeptr(&rec->a2);
+}
+
+struct syscallentry syscall_s390_sthyi = {
+ .name = "s390_sthyi",
+ .sanitise = sanitise_s390_sthyi,
+ .post = post_s390_sthyi,
+ .num_args = 4,
+ .arg1name = "function_code",
+ .arg1type = ARG_LIST,
+ .arg1list = ARGLIST(syscall_s390_sthyi_arg1),
+ .arg2name = "resp_buffer",
+ .arg2type = ARG_NON_NULL_ADDRESS,
+ .arg3name = "return_code",
+ .arg3type = ARG_ADDRESS,
+ .arg4name = "resp_buffer",
+ .arg4type = ARG_RANGE,
+ .low4range = 0,
+ .hi4range = 128
+};
diff --git a/syscalls/syscalls.h b/syscalls/syscalls.h
index 38271170..3620c4ea 100644
--- a/syscalls/syscalls.h
+++ b/syscalls/syscalls.h
@@ -390,5 +390,6 @@ extern struct syscallentry syscall_runtime_instr;
extern struct syscallentry syscall_s390_pci_mmio_write;
extern struct syscallentry syscall_s390_pci_mmio_read;
extern struct syscallentry syscall_s390_guarded_storage;
+extern struct syscallentry syscall_s390_sthyi;
unsigned int random_fcntl_setfl_flags(void);
--
2.14.3
--
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