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| author | Richard Henderson <rth@twiddle.net> | 2016-09-02 12:23:57 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2016-10-26 08:29:01 -0700 |
| commit | df79b996a7b21c6ea7847f7927a2e1a294b86c72 (patch) | |
| tree | 878779e7214c310b0b0929ca115e286a9f0ba12f /tcg-runtime.c | |
| parent | 7ebee43ee3e2fcd7b5063058b7ef74bc43216733 (diff) | |
| download | qemu-df79b996a7b21c6ea7847f7927a2e1a294b86c72.tar.gz | |
tcg: Add CONFIG_ATOMIC64
Allow qemu to build on 32-bit hosts without 64-bit atomic ops.
Even if we only allow 32-bit hosts to multi-thread emulate 32-bit
guests, we still need some way to handle the 32-bit guest using a
64-bit atomic operation. Do so by dropping back to single-step.
Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg-runtime.c')
| -rw-r--r-- | tcg-runtime.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tcg-runtime.c b/tcg-runtime.c index e9521531cd..9327b6f23b 100644 --- a/tcg-runtime.c +++ b/tcg-runtime.c @@ -101,6 +101,11 @@ int64_t HELPER(mulsh_i64)(int64_t arg1, int64_t arg2) return h; } +void HELPER(exit_atomic)(CPUArchState *env) +{ + cpu_loop_exit_atomic(ENV_GET_CPU(env), GETPC()); +} + #ifndef CONFIG_SOFTMMU /* The softmmu versions of these helpers are in cputlb.c. */ @@ -130,8 +135,10 @@ static void *atomic_mmu_lookup(CPUArchState *env, target_ulong addr, #define DATA_SIZE 4 #include "atomic_template.h" +#ifdef CONFIG_ATOMIC64 #define DATA_SIZE 8 #include "atomic_template.h" +#endif /* The following is only callable from other helpers, and matches up with the softmmu version. */ |