On 09/21/2016 01:07 AM, Leon Alrae wrote:
+ tcg_gen_brcond_tl(TCG_COND_EQ, addr, cpu_lladdr, l1);
+ tcg_temp_free(addr);
+ tcg_gen_movi_tl(t0, 0);
+ tcg_gen_br(done);
+
+ gen_set_label(l1);
+ /* generate cmpxchg */
+ val = tcg_temp_new();
+ gen_load_gpr(val, rt);
+ tcg_gen_atomic_cmpxchg_tl(t0, cpu_lladdr, cpu_llval, val,
+ ctx->mem_idx, tcg_mo);
+ tcg_gen_setcond_tl(TCG_COND_EQ, t0, t0, cpu_llval);
+ tcg_temp_free(val);
+
+ gen_set_label(done);
+ /* store the result into the register */
+ gen_store_gpr(t0, rt);
tcg_temp_free(t0);
The only thing I would change is to duplicate the gen_store_gpr into both
branches, so that we don't have to store t0 into the stack across the blocks.
Otherwise,
Reviewed-by: Richard Henderson <[email protected]>
r~
