diff options
Diffstat (limited to 'tcg/tcg-op.c')
| -rw-r--r-- | tcg/tcg-op.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c index 4b8a473fad..0374b5d56d 100644 --- a/tcg/tcg-op.c +++ b/tcg/tcg-op.c @@ -2664,9 +2664,20 @@ void tcg_gen_extr32_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i64 arg) /* QEMU specific operations. */ -void tcg_gen_exit_tb(TranslationBlock *tb, unsigned idx) -{ - uintptr_t val = (uintptr_t)tb + idx; +void tcg_gen_exit_tb(const TranslationBlock *tb, unsigned idx) +{ + /* + * Let the jit code return the read-only version of the + * TranslationBlock, so that we minimize the pc-relative + * distance of the address of the exit_tb code to TB. + * This will improve utilization of pc-relative address loads. + * + * TODO: Move this to translator_loop, so that all const + * TranslationBlock pointers refer to read-only memory. + * This requires coordination with targets that do not use + * the translator_loop. + */ + uintptr_t val = (uintptr_t)tcg_splitwx_to_rx((void *)tb) + idx; if (tb == NULL) { tcg_debug_assert(idx == 0); @@ -2883,7 +2894,11 @@ void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, MemOp memop) } addr = plugin_prep_mem_callbacks(addr); - gen_ldst_i32(INDEX_op_qemu_st_i32, val, addr, memop, idx); + if (TCG_TARGET_HAS_qemu_st8_i32 && (memop & MO_SIZE) == MO_8) { + gen_ldst_i32(INDEX_op_qemu_st8_i32, val, addr, memop, idx); + } else { + gen_ldst_i32(INDEX_op_qemu_st_i32, val, addr, memop, idx); + } plugin_gen_mem_callbacks(addr, info); if (swap) { |