[PATCH v8] target/hexagon: Implement do_raise_exception()

[Brian Cain <brian.cain@oss.qualcomm.com>]

From: Brian Cain <bcain@quicinc.com>

Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Brian Cain <brian.cain@oss.qualcomm.com>
---
 target/hexagon/internal.h  |  5 +++++
 target/hexagon/op_helper.c | 14 ++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/target/hexagon/internal.h b/target/hexagon/internal.h
index cd06ff41d4f..33d73ed18d1 100644
--- a/target/hexagon/internal.h
+++ b/target/hexagon/internal.h
@@ -31,6 +31,11 @@ void hexagon_debug(CPUHexagonState *env);
 
 extern const char * const hexagon_regnames[TOTAL_PER_THREAD_REGS];
 
+void G_NORETURN do_raise_exception(CPUHexagonState *env,
+        uint32_t exception,
+        uint32_t PC,
+        uintptr_t retaddr);
+
 #ifndef CONFIG_USER_ONLY
 extern const VMStateDescription vmstate_hexagon_cpu;
 #endif
diff --git a/target/hexagon/op_helper.c b/target/hexagon/op_helper.c
index 359bf12f1f2..327c233c01b 100644
--- a/target/hexagon/op_helper.c
+++ b/target/hexagon/op_helper.c
@@ -40,6 +40,20 @@
 #define SF_MANTBITS    23
 
 /* Exceptions processing helpers */
+G_NORETURN
+void do_raise_exception(CPUHexagonState *env, uint32_t exception,
+                        uint32_t PC, uintptr_t retaddr)
+{
+    CPUState *cs = env_cpu(env);
+    qemu_log_mask(CPU_LOG_INT, "%s: 0x%08" PRIx32 ", @ %08" PRIx32 "\n",
+                  __func__, exception, PC);
+    ASSERT_DIRECT_TO_GUEST_UNSET(env, exception);
+
+    env->gpr[HEX_REG_PC] = PC;
+    cs->exception_index = exception;
+    cpu_loop_exit_restore(cs, retaddr);
+}
+
 G_NORETURN void hexagon_raise_exception_err(CPUHexagonState *env,
                                             uint32_t exception,
                                             uintptr_t pc)
-- 
2.34.1