diff mbox series

[v2,42/55] tcg: Add helper_unaligned_mmu for user-only sigbus

Message ID 20210803041443.55452-43-richard.henderson@linaro.org
State New
Headers show
Series Unaligned access for user-only | expand

Commit Message

Richard Henderson Aug. 3, 2021, 4:14 a.m. UTC 
To be called from tcg generated code on hosts that support
unaligned accesses natively, in response to an access that
is supposed to be aligned.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 include/tcg/tcg-ldst.h | 5 +++++
 accel/tcg/user-exec.c  | 7 +++++++
 2 files changed, 12 insertions(+)

-- 
2.25.1
diff mbox series

Patch

diff --git a/include/tcg/tcg-ldst.h b/include/tcg/tcg-ldst.h
index 8c86365611..a934bed042 100644
--- a/include/tcg/tcg-ldst.h
+++ b/include/tcg/tcg-ldst.h
@@ -70,5 +70,10 @@  void helper_be_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val,
 void helper_be_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val,
                        MemOpIdx oi, uintptr_t retaddr);
 
+#else
+
+void QEMU_NORETURN helper_unaligned_mmu(CPUArchState *env, target_ulong addr,
+                                        uint32_t type, uintptr_t ra);
+
 #endif /* CONFIG_SOFTMMU */
 #endif /* TCG_LDST_H */
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 46b74b5f70..2da11aeca0 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -27,6 +27,7 @@ 
 #include "exec/helper-proto.h"
 #include "qemu/atomic128.h"
 #include "trace/trace-root.h"
+#include "tcg/tcg-ldst.h"
 #include "internal.h"
 
 #undef EAX
@@ -867,6 +868,12 @@  static void validate_memop(MemOpIdx oi, MemOp expected)
 #endif
 }
 
+void helper_unaligned_mmu(CPUArchState *env, target_ulong addr,
+                          uint32_t access_type, uintptr_t ra)
+{
+    cpu_unaligned_access(env_cpu(env), addr, access_type, MMU_USER_IDX, ra);
+}
+
 static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
                             MemOpIdx oi, uintptr_t ra, MMUAccessType type)
 {