target/sparc: Use i128 for Fdmulq

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20231103173841.33651-14-richard.henderson@linaro.org>

diff --git a/target/sparc/fop_helper.c b/target/sparc/fop_helper.c
index 9a0110e201b9ac65a38e28058b5c39911dec55f4..cd9b212597b863842d02a94615036a55eb99484a 100644 (file)
--- a/target/sparc/fop_helper.c
+++ b/target/sparc/fop_helper.c
@@ -129,11 +129,11 @@ float64 helper_fsmuld(CPUSPARCState *env, float32 src1, float32 src2)
                        &env->fp_status);
 }
 
-void helper_fdmulq(CPUSPARCState *env, float64 src1, float64 src2)
+Int128 helper_fdmulq(CPUSPARCState *env, float64 src1, float64 src2)
 {
-    QT0 = float128_mul(float64_to_float128(src1, &env->fp_status),
-                       float64_to_float128(src2, &env->fp_status),
-                       &env->fp_status);
+    return f128_ret(float128_mul(float64_to_float128(src1, &env->fp_status),
+                                 float64_to_float128(src2, &env->fp_status),
+                                 &env->fp_status));
 }
 
 /* Integer to float conversion.  */

diff --git a/target/sparc/helper.h b/target/sparc/helper.h
index 20f67f89b05b0a780b76d7cf1cdd8f8c07ab4cc2..f7aeb31169da562e3464feed26315bebae1887e4 100644 (file)
--- a/target/sparc/helper.h
+++ b/target/sparc/helper.h
@@ -84,7 +84,7 @@ DEF_HELPER_FLAGS_3(fmuls, TCG_CALL_NO_RWG, f32, env, f32, f32)
 DEF_HELPER_FLAGS_3(fdivs, TCG_CALL_NO_RWG, f32, env, f32, f32)
 
 DEF_HELPER_FLAGS_3(fsmuld, TCG_CALL_NO_RWG, f64, env, f32, f32)
-DEF_HELPER_FLAGS_3(fdmulq, TCG_CALL_NO_RWG, void, env, f64, f64)
+DEF_HELPER_FLAGS_3(fdmulq, TCG_CALL_NO_RWG, i128, env, f64, f64)
 
 DEF_HELPER_FLAGS_2(fitod, TCG_CALL_NO_RWG_SE, f64, env, s32)
 DEF_HELPER_FLAGS_2(fitoq, TCG_CALL_NO_RWG, i128, env, s32)

diff --git a/target/sparc/translate.c b/target/sparc/translate.c
index d478a2fcd0df69ebb36be4777431a16790d7e446..d12de5ae5c8c0c6c302c39c07101421100ab5dbd 100644 (file)
--- a/target/sparc/translate.c
+++ b/target/sparc/translate.c
@@ -276,14 +276,6 @@ static void gen_store_fpr_Q(DisasContext *dc, unsigned int dst, TCGv_i128 v)
     gen_update_fprs_dirty(dc, dst);
 }
 
-static void gen_op_store_QT0_fpr(unsigned int dst)
-{
-    tcg_gen_ld_i64(cpu_fpr[dst / 2], tcg_env, offsetof(CPUSPARCState, qt0) +
-                   offsetof(CPU_QuadU, ll.upper));
-    tcg_gen_ld_i64(cpu_fpr[dst/2 + 1], tcg_env, offsetof(CPUSPARCState, qt0) +
-                   offsetof(CPU_QuadU, ll.lower));
-}
-
 /* moves */
 #ifdef CONFIG_USER_ONLY
 #define supervisor(dc) 0
@@ -4992,6 +4984,7 @@ TRANS(FDIVq, ALL, do_env_qqq, a, gen_helper_fdivq)
 static bool trans_FdMULq(DisasContext *dc, arg_r_r_r *a)
 {
     TCGv_i64 src1, src2;
+    TCGv_i128 dst;
 
     if (gen_trap_ifnofpu(dc)) {
         return true;
@@ -5003,10 +4996,10 @@ static bool trans_FdMULq(DisasContext *dc, arg_r_r_r *a)
     gen_op_clear_ieee_excp_and_FTT();
     src1 = gen_load_fpr_D(dc, a->rs1);
     src2 = gen_load_fpr_D(dc, a->rs2);
-    gen_helper_fdmulq(tcg_env, src1, src2);
+    dst = tcg_temp_new_i128();
+    gen_helper_fdmulq(dst, tcg_env, src1, src2);
     gen_helper_check_ieee_exceptions(cpu_fsr, tcg_env);
-    gen_op_store_QT0_fpr(QFPREG(a->rd));
-    gen_update_fprs_dirty(dc, QFPREG(a->rd));
+    gen_store_fpr_Q(dc, a->rd, dst);
     return advance_pc(dc);
 }