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[PATCH v3 43/66] tcg: Add helper_unaligned_{ld, st} for user-only sigbus
From: |
Richard Henderson |
Subject: |
[PATCH v3 43/66] tcg: Add helper_unaligned_{ld, st} for user-only sigbus |
Date: |
Wed, 18 Aug 2021 09:18:57 -1000 |
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 | 13 +++++++++++++
2 files changed, 18 insertions(+)
diff --git a/include/tcg/tcg-ldst.h b/include/tcg/tcg-ldst.h
index 8c86365611..bf40942de4 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_ld(CPUArchState *env, target_ulong addr);
+void QEMU_NORETURN helper_unaligned_st(CPUArchState *env, target_ulong addr);
+
#endif /* CONFIG_SOFTMMU */
#endif /* TCG_LDST_H */
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 46b74b5f70..6a3fec3002 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 +868,18 @@ static void validate_memop(MemOpIdx oi, MemOp expected)
#endif
}
+void helper_unaligned_ld(CPUArchState *env, target_ulong addr)
+{
+ cpu_unaligned_access(env_cpu(env), addr, MMU_DATA_LOAD,
+ MMU_USER_IDX, GETPC());
+}
+
+void helper_unaligned_st(CPUArchState *env, target_ulong addr)
+{
+ cpu_unaligned_access(env_cpu(env), addr, MMU_DATA_STORE,
+ MMU_USER_IDX, GETPC());
+}
+
static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
MemOpIdx oi, uintptr_t ra, MMUAccessType type)
{
--
2.25.1
- [PATCH v3 30/66] target/arm: Use MO_128 for 16 byte atomics, (continued)
- [PATCH v3 30/66] target/arm: Use MO_128 for 16 byte atomics, Richard Henderson, 2021/08/18
- [PATCH v3 37/66] target/mips: Use cpu_*_data_ra for msa load/store, Richard Henderson, 2021/08/18
- [PATCH v3 33/66] target/s390x: Use MO_128 for 16 byte atomics, Richard Henderson, 2021/08/18
- [PATCH v3 34/66] target/hexagon: Implement cpu_mmu_index, Richard Henderson, 2021/08/18
- [PATCH v3 31/66] target/i386: Use MO_128 for 16 byte atomics, Richard Henderson, 2021/08/18
- [PATCH v3 38/66] target/mips: Use 8-byte memory ops for msa load/store, Richard Henderson, 2021/08/18
- [PATCH v3 39/66] target/s390x: Use cpu_*_mmu instead of helper_*_mmu, Richard Henderson, 2021/08/18
- [PATCH v3 40/66] target/sparc: Use cpu_*_mmu instead of helper_*_mmu, Richard Henderson, 2021/08/18
- [PATCH v3 41/66] target/arm: Use cpu_*_mmu instead of helper_*_mmu, Richard Henderson, 2021/08/18
- [PATCH v3 42/66] tcg: Move helper_*_mmu decls to tcg/tcg-ldst.h, Richard Henderson, 2021/08/18
- [PATCH v3 43/66] tcg: Add helper_unaligned_{ld, st} for user-only sigbus,
Richard Henderson <=
- [PATCH v3 45/66] tests/tcg/multiarch: Add sigbus.c, Richard Henderson, 2021/08/18
- [PATCH v3 44/66] tcg/i386: Support raising sigbus for user-only, Richard Henderson, 2021/08/18
- [PATCH v3 47/66] linux-user: Disable more prctl subcodes, Richard Henderson, 2021/08/18
- [PATCH v3 46/66] linux-user: Split out do_prctl and subroutines, Richard Henderson, 2021/08/18
- [PATCH v3 48/66] hw/core/cpu: Re-sort the non-pointers to the end of CPUClass, Richard Henderson, 2021/08/18