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[PATCH v4 30/48] tcg: Add helper_unaligned_{ld, st} for user-only sigbus
From: |
Richard Henderson |
Subject: |
[PATCH v4 30/48] tcg: Add helper_unaligned_{ld, st} for user-only sigbus |
Date: |
Tue, 12 Oct 2021 19:45:49 -0700 |
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.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/tcg/tcg-ldst.h | 5 +++++
accel/tcg/user-exec.c | 11 +++++++++++
2 files changed, 16 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 7d50dd54f6..0473ead5ab 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"
__thread uintptr_t helper_retaddr;
@@ -217,6 +218,16 @@ static void validate_memop(MemOpIdx oi, MemOp expected)
#endif
}
+void helper_unaligned_ld(CPUArchState *env, target_ulong addr)
+{
+ cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_LOAD, GETPC());
+}
+
+void helper_unaligned_st(CPUArchState *env, target_ulong addr)
+{
+ cpu_loop_exit_sigbus(env_cpu(env), addr, MMU_DATA_STORE, GETPC());
+}
+
static void *cpu_mmu_lookup(CPUArchState *env, target_ulong addr,
MemOpIdx oi, uintptr_t ra, MMUAccessType type)
{
--
2.25.1
- [PATCH v4 20/48] target/s390x: Use MO_128 for 16 byte atomics, (continued)
- [PATCH v4 20/48] target/s390x: Use MO_128 for 16 byte atomics, Richard Henderson, 2021/10/12
- [PATCH v4 31/48] linux-user: Split out do_prctl and subroutines, Richard Henderson, 2021/10/12
- [PATCH v4 37/48] target/alpha: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/12
- [PATCH v4 26/48] target/s390x: Use cpu_*_mmu instead of helper_*_mmu, Richard Henderson, 2021/10/12
- [PATCH v4 29/48] tcg: Move helper_*_mmu decls to tcg/tcg-ldst.h, Richard Henderson, 2021/10/12
- [PATCH v4 34/48] linux-user: Add code for PR_GET/SET_UNALIGN, Richard Henderson, 2021/10/12
- [PATCH v4 22/48] accel/tcg: Add cpu_{ld,st}*_mmu interfaces, Richard Henderson, 2021/10/12
- [PATCH v4 35/48] target/alpha: Reorg fp memory operations, Richard Henderson, 2021/10/12
- [PATCH v4 36/48] target/alpha: Reorg integer memory operations, Richard Henderson, 2021/10/12
- [PATCH v4 25/48] target/mips: Use 8-byte memory ops for msa load/store, Richard Henderson, 2021/10/12
- [PATCH v4 30/48] tcg: Add helper_unaligned_{ld, st} for user-only sigbus,
Richard Henderson <=
- [PATCH v4 39/48] target/sh4: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/12
- [PATCH v4 27/48] target/sparc: Use cpu_*_mmu instead of helper_*_mmu, Richard Henderson, 2021/10/12
- [PATCH v4 32/48] linux-user: Disable more prctl subcodes, Richard Henderson, 2021/10/12
- [PATCH v4 33/48] Revert "cpu: Move cpu_common_props to hw/core/cpu.c", Richard Henderson, 2021/10/12
- [PATCH v4 38/48] target/hppa: Implement prctl_unalign_sigbus, Richard Henderson, 2021/10/12
- [PATCH v4 40/48] linux-user/signal: Handle BUS_ADRALN in host_signal_handler, Richard Henderson, 2021/10/12
- [PATCH v4 41/48] tcg: Canonicalize alignment flags in MemOp, Richard Henderson, 2021/10/12
- [PATCH v4 43/48] tcg/aarch64: Support raising sigbus for user-only, Richard Henderson, 2021/10/12
- [PATCH v4 42/48] tcg/i386: Support raising sigbus for user-only, Richard Henderson, 2021/10/12
- [PATCH v4 44/48] tcg/ppc: Support raising sigbus for user-only, Richard Henderson, 2021/10/12