diff options
| 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/tcg.h | |
| parent | 7ebee43ee3e2fcd7b5063058b7ef74bc43216733 (diff) | |
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/tcg.h')
| -rw-r--r-- | tcg/tcg.h | 15 |
1 files changed, 12 insertions, 3 deletions
@@ -1204,14 +1204,23 @@ TYPE helper_atomic_ ## NAME ## SUFFIX ## _mmu \ (CPUArchState *env, target_ulong addr, TYPE val, \ TCGMemOpIdx oi, uintptr_t retaddr); +#ifdef CONFIG_ATOMIC64 #define GEN_ATOMIC_HELPER_ALL(NAME) \ - GEN_ATOMIC_HELPER(NAME, uint32_t, b) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, b) \ GEN_ATOMIC_HELPER(NAME, uint32_t, w_le) \ - GEN_ATOMIC_HELPER(NAME, uint32_t, l_le) \ - GEN_ATOMIC_HELPER(NAME, uint64_t, q_le) \ GEN_ATOMIC_HELPER(NAME, uint32_t, w_be) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_le) \ GEN_ATOMIC_HELPER(NAME, uint32_t, l_be) \ + GEN_ATOMIC_HELPER(NAME, uint64_t, q_le) \ GEN_ATOMIC_HELPER(NAME, uint64_t, q_be) +#else +#define GEN_ATOMIC_HELPER_ALL(NAME) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, b) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, w_be) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_le) \ + GEN_ATOMIC_HELPER(NAME, uint32_t, l_be) +#endif GEN_ATOMIC_HELPER_ALL(fetch_add) GEN_ATOMIC_HELPER_ALL(fetch_sub) |