It's a simple shift and mask sequence.
Signed-off-by: Richard Henderson <r...@twiddle.net>
---
target-alpha/helper.h | 1 -
target-alpha/op_helper.c | 7 -------
target-alpha/translate.c | 21 ++++++++++++++++++++-
3 files changed, 20 insertions(+), 9 deletions(-)
diff --git a/target-alpha/helper.h b/target-alpha/helper.h
index 10c78d0..ccf6a2a 100644
--- a/target-alpha/helper.h
+++ b/target-alpha/helper.h
@@ -83,7 +83,6 @@ DEF_HELPER_FLAGS_1(cvtqf, TCG_CALL_CONST, i64, i64)
DEF_HELPER_FLAGS_1(cvtgf, TCG_CALL_CONST, i64, i64)
DEF_HELPER_FLAGS_1(cvtgq, TCG_CALL_CONST, i64, i64)
DEF_HELPER_FLAGS_1(cvtqg, TCG_CALL_CONST, i64, i64)
-DEF_HELPER_FLAGS_1(cvtlq, TCG_CALL_CONST | TCG_CALL_PURE, i64, i64)
DEF_HELPER_FLAGS_1(cvttq, TCG_CALL_CONST, i64, i64)
DEF_HELPER_FLAGS_1(cvttq_c, TCG_CALL_CONST, i64, i64)
diff --git a/target-alpha/op_helper.c b/target-alpha/op_helper.c
index f9cd07a..a209130 100644
--- a/target-alpha/op_helper.c
+++ b/target-alpha/op_helper.c
@@ -1152,13 +1152,6 @@ uint64_t helper_cvtqg (uint64_t a)
return float64_to_g(fr);
}
-uint64_t helper_cvtlq (uint64_t a)
-{
- int32_t lo = a >> 29;
- int32_t hi = a >> 32;
- return (lo & 0x3FFFFFFF) | (hi & 0xc0000000);
-}
-
/* PALcode support special instructions */
#if !defined (CONFIG_USER_ONLY)
void helper_hw_rei (void)
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index cfdf441..c52cac3 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -597,6 +597,26 @@ static inline void gen_fp_exc_raise(int rc, int fn11)
gen_fp_exc_raise_ignore(rc, fn11, fn11 & QUAL_I ? 0 : float_flag_inexact);
}
+static void gen_fcvtlq(int rb, int rc)
+{
+ if (unlikely(rc == 31)) {
+ return;
+ }
+ if (unlikely(rb == 31)) {
+ tcg_gen_movi_i64(cpu_fir[rc], 0);
+ } else {
+ TCGv tmp = tcg_temp_new();
+
+ tcg_gen_shri_i64(tmp, cpu_fir[rb], 32);
+ tcg_gen_shri_i64(cpu_fir[rc], cpu_fir[rb], 29);
+ tcg_gen_andi_i64(tmp, tmp, 0xc0000000);
+ tcg_gen_andi_i64(cpu_fir[rc], cpu_fir[rc], 0x3FFFFFFF);
+ tcg_gen_or_i64(cpu_fir[rc], cpu_fir[rc], tmp);
+
+ tcg_temp_free(tmp);
+ }
+}
+
static void gen_fcvtql(int rb, int rc)
{
if (unlikely(rc == 31)) {
@@ -646,7 +666,6 @@ static inline void glue(gen_f, name)(int rb, int rc) \
tcg_temp_free(tmp); \
} \
}
-FARITH2(cvtlq)
/* ??? VAX instruction qualifiers ignored. */
FARITH2(sqrtf)
--
1.6.6.1
