Signed-off-by: Andrew Jones <drjones@xxxxxxxxxx>
---
arm/Makefile.arm64 | 2 +-
arm/emul-abort.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
arm/unittests.cfg | 25 ++++++++++++++
3 files changed, 121 insertions(+), 1 deletion(-)
create mode 100644 arm/emul-abort.c
diff --git a/arm/Makefile.arm64 b/arm/Makefile.arm64
index 0b0761c729c7..6a1a997bc26b 100644
--- a/arm/Makefile.arm64
+++ b/arm/Makefile.arm64
@@ -12,7 +12,7 @@ cflatobjs += lib/arm64/processor.o
cflatobjs += lib/arm64/spinlock.o
# arm64 specific tests
-tests =
+tests = $(TEST_DIR)/emul-abort.flat
include $(TEST_DIR)/Makefile.common
diff --git a/arm/emul-abort.c b/arm/emul-abort.c
new file mode 100644
index 000000000000..cc2be586a422
--- /dev/null
+++ b/arm/emul-abort.c
@@ -0,0 +1,95 @@
+/*
+ * Test emulation of guest aborts
+ *
+ * Copyright (C) 2016, Red Hat Inc, Andrew Jones <drjones@xxxxxxxxxx>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.
+ */
+#include <libcflat.h>
+#include <asm/processor.h>
+#include <asm/thread_info.h>
+#include <asm/setup.h>
+
+#define USAGE "usage: emul-abort <subtest>\n" \
+ "subtests:\n" \
+ " pabtinj-usr32-mem\n" \
+ " pabtinj-usr64-mem\n" \
+ " pabtinj-usr32-io\n" \
+ " pabtinj-usr64-io"
+
+#define UNMAPPED_MEM (PHYS_END + 64*1024)
+#define UNMAPPED_IO 0xf010000
+
+typedef void (*func_t)(void *arg);
+
+static unsigned long do_pabt, mode, far;
+static bool pass;
+
+static void finish_pabt(void)
+{
+ report("bad_addr=0x%08lx far=0x%08lx", pass, do_pabt, far);
+ exit(report_summary());
+}
+
+static void handle_pabt(struct pt_regs *regs, unsigned int esr)
+{
+ bool far_valid;
+
+ if (esr >> ESR_EL1_EC_SHIFT != ESR_EL1_EC_IABT_EL0)
+ return;
+
+ far_valid = get_far(esr, &far);
+
+ pass = far_valid && far == do_pabt;
+ pass = pass && regs->pc == do_pabt;
+ pass = pass && (regs->pstate & (PSR_MODE32_BIT | PSR_MODE_MASK)) == mode;
+
+ regs->pstate &= ~PSR_MODE32_BIT;
+ regs->pc = (unsigned long)finish_pabt;
+}
+
+static void pabtinj_test(bool is_64)
+{
+ unsigned long sp = (unsigned long)thread_stack_alloc();
+
+ if (is_64) {
+ install_exception_handler(EL0_SYNC_64, ESR_EL1_EC_IABT_EL0, handle_pabt);
+ start_usr((func_t)do_pabt, NULL, sp);
+ } else {
+ mode = PSR_MODE32_BIT;
+ install_exception_handler(EL0_SYNC_32, ESR_EL1_EC_IABT_EL0, handle_pabt);
+ start_usr32((func_t)do_pabt, NULL, sp);
+ }
+}
+
+void main(int ac, char **av)
+{
+ if (ac < 2)
+ report_abort(USAGE);
+
+ if (strncmp(av[1], "pabtinj-usr", 11) == 0) {
+
+ char *testname = av[1] + 11;
+ bool is_64 = false;
+
+ if (strncmp(testname, "32", 2) == 0)
+ is_64 = false;
+ else if (strncmp(testname, "64", 2) == 0)
+ is_64 = true;
+ else
+ report_abort(USAGE);
+
+ if (strcmp(testname + 2, "-mem") == 0)
+ do_pabt = UNMAPPED_MEM;
+ else if (strcmp(testname + 2, "-io") == 0)
+ do_pabt = UNMAPPED_IO;
+ else
+ report_abort(USAGE);
+
+ report_prefix_push(av[1]);
+ pabtinj_test(is_64);
+
+ } else {
+ report_abort(USAGE);
+ }
+}
diff --git a/arm/unittests.cfg b/arm/unittests.cfg
index ffd12e5794aa..61c437f169c8 100644
--- a/arm/unittests.cfg
+++ b/arm/unittests.cfg
@@ -51,3 +51,28 @@ file = selftest.flat
smp = $MAX_SMP
extra_params = -append 'smp'
groups = selftest
+
+# Emulation tests
+[emul-pabt-injection-usr32-mem]
+file = emul-abort.flat
+extra_params = -append 'pabtinj-usr32-mem'
+arch = arm64
+groups = emulation mode32
+
+[emul-pabt-injection-usr64-mem]
+file = emul-abort.flat
+extra_params = -append 'pabtinj-usr64-mem'
+arch = arm64
+groups = emulation mode64
+
+[emul-pabt-injection-usr32-io]
+file = emul-abort.flat
+extra_params = -append 'pabtinj-usr32-io'
+arch = arm64
+groups = emulation mode32
+
+[emul-pabt-injection-usr64-io]
+file = emul-abort.flat
+extra_params = -append 'pabtinj-usr64-io'
+arch = arm64
+groups = emulation mode64
--
1.8.3.1
--
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