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authorRichard Henderson <richard.henderson@linaro.org>2021-07-27 19:41:04 -1000
committerRichard Henderson <richard.henderson@linaro.org>2021-11-02 07:00:52 -0400
commit37e891e38fe1e81fc468d8a000912f8e7ee61336 (patch)
tree5e5bdd0a63b37fc86d48dfc34244c20287e267ba /accel
parent9395cd0a38bfec68d150443f59aa50e44877a9c1 (diff)
tcg: Add helper_unaligned_{ld,st} for user-only sigbus
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: Warner Losh <imp@bsdimp.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'accel')
-rw-r--r--accel/tcg/user-exec.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index aaf47d89d2..1528a21fad 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;
@@ -215,6 +216,16 @@ 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)
{