Helpers for load-locked/store-conditional Signed-off-by: Taylor Simpson <tsimp...@quicinc.com> --- target/hexagon/genptr_helpers.h | 52 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+)
diff --git a/target/hexagon/genptr_helpers.h b/target/hexagon/genptr_helpers.h index 2b91fdb..b780522 100644 --- a/target/hexagon/genptr_helpers.h +++ b/target/hexagon/genptr_helpers.h @@ -320,4 +320,56 @@ static inline TCGv gen_set_bit(int i, TCGv result, TCGv src) return result; } +static inline void gen_load_locked4u(TCGv dest, TCGv vaddr, int mem_index) +{ + tcg_gen_qemu_ld32u(dest, vaddr, mem_index); + tcg_gen_mov_tl(llsc_addr, vaddr); + tcg_gen_mov_tl(llsc_val, dest); +} + +static inline void gen_load_locked8u(TCGv_i64 dest, TCGv vaddr, int mem_index) +{ + tcg_gen_qemu_ld64(dest, vaddr, mem_index); + tcg_gen_mov_tl(llsc_addr, vaddr); + tcg_gen_mov_i64(llsc_val_i64, dest); +} + +static inline void gen_store_conditional4(CPUHexagonState *env, + DisasContext *ctx, int prednum, + TCGv pred, TCGv vaddr, TCGv src) +{ + TCGv tmp = tcg_temp_new(); + TCGLabel *fail = gen_new_label(); + + tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPUHexagonState, llsc_addr)); + tcg_gen_brcond_tl(TCG_COND_NE, vaddr, tmp, fail); + tcg_gen_movi_tl(tmp, prednum); + tcg_gen_st_tl(tmp, cpu_env, offsetof(CPUHexagonState, llsc_reg)); + tcg_gen_st_tl(src, cpu_env, offsetof(CPUHexagonState, llsc_newval)); + gen_exception(HEX_EXCP_SC4); + + gen_set_label(fail); + tcg_gen_movi_tl(pred, 0); + tcg_temp_free(tmp); +} + +static inline void gen_store_conditional8(CPUHexagonState *env, + DisasContext *ctx, int prednum, + TCGv pred, TCGv vaddr, TCGv_i64 src) +{ + TCGv tmp = tcg_temp_new(); + TCGLabel *fail = gen_new_label(); + + tcg_gen_ld_tl(tmp, cpu_env, offsetof(CPUHexagonState, llsc_addr)); + tcg_gen_brcond_tl(TCG_COND_NE, vaddr, tmp, fail); + tcg_gen_movi_tl(tmp, prednum); + tcg_gen_st_tl(tmp, cpu_env, offsetof(CPUHexagonState, llsc_reg)); + tcg_gen_st_i64(src, cpu_env, offsetof(CPUHexagonState, llsc_newval_i64)); + gen_exception(HEX_EXCP_SC8); + + gen_set_label(fail); + tcg_gen_movi_tl(pred, 0); + tcg_temp_free(tmp); +} + #endif -- 2.7.4