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authorRichard Henderson <richard.henderson@linaro.org>2018-02-11 23:23:54 -0800
committerRichard Henderson <richard.henderson@linaro.org>2019-02-12 08:48:27 -0800
commitb1e2af576af7844b8977bbf4357e1f3bddd11f04 (patch)
treefc8b9ee209cd1a8aa2c99f57a3576bb9aa16921f /target/hppa
parent1cd012a5f720963deeaa4059c75cbdfce12fbee5 (diff)
target/hppa: Convert fp multiply-add
Tested-by: Helge Deller <deller@gmx.de> Tested-by: Sven Schnelle <svens@stackframe.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target/hppa')
-rw-r--r--target/hppa/insns.decode12
-rw-r--r--target/hppa/translate.c69
2 files changed, 52 insertions, 29 deletions
diff --git a/target/hppa/insns.decode b/target/hppa/insns.decode
index 38f5fb6be2..16a999b05f 100644
--- a/target/hppa/insns.decode
+++ b/target/hppa/insns.decode
@@ -153,3 +153,15 @@ lda 000011 ..... ..... .. . 1 -- 0110 ...... @ldim5 size=2
lda 000011 ..... ..... .. . 0 -- 0110 ...... @ldstx size=2
sta 000011 ..... ..... .. . 1 -- 1110 ...... @stim5 size=2
stby 000011 b:5 r:5 sp:2 a:1 1 -- 1100 m:1 ..... disp=%im5_0
+
+####
+# Floating-point Multiply Add
+####
+
+&mpyadd rm1 rm2 ta ra tm
+@mpyadd ...... rm1:5 rm2:5 ta:5 ra:5 . tm:5 &mpyadd
+
+fmpyadd_f 000110 ..... ..... ..... ..... 0 ..... @mpyadd
+fmpyadd_d 000110 ..... ..... ..... ..... 1 ..... @mpyadd
+fmpysub_f 100110 ..... ..... ..... ..... 0 ..... @mpyadd
+fmpysub_d 100110 ..... ..... ..... ..... 1 ..... @mpyadd
diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 822d93fb23..2f4a50e113 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -4255,37 +4255,54 @@ static inline int fmpyadd_s_reg(unsigned r)
return (r & 16) * 2 + 16 + (r & 15);
}
-static bool trans_fmpyadd(DisasContext *ctx, uint32_t insn, bool is_sub)
+static bool do_fmpyadd_s(DisasContext *ctx, arg_mpyadd *a, bool is_sub)
{
- unsigned tm = extract32(insn, 0, 5);
- unsigned f = extract32(insn, 5, 1);
- unsigned ra = extract32(insn, 6, 5);
- unsigned ta = extract32(insn, 11, 5);
- unsigned rm2 = extract32(insn, 16, 5);
- unsigned rm1 = extract32(insn, 21, 5);
+ int tm = fmpyadd_s_reg(a->tm);
+ int ra = fmpyadd_s_reg(a->ra);
+ int ta = fmpyadd_s_reg(a->ta);
+ int rm2 = fmpyadd_s_reg(a->rm2);
+ int rm1 = fmpyadd_s_reg(a->rm1);
nullify_over(ctx);
- /* Independent multiply & add/sub, with undefined behaviour
- if outputs overlap inputs. */
- if (f == 0) {
- tm = fmpyadd_s_reg(tm);
- ra = fmpyadd_s_reg(ra);
- ta = fmpyadd_s_reg(ta);
- rm2 = fmpyadd_s_reg(rm2);
- rm1 = fmpyadd_s_reg(rm1);
- do_fop_weww(ctx, tm, rm1, rm2, gen_helper_fmpy_s);
- do_fop_weww(ctx, ta, ta, ra,
- is_sub ? gen_helper_fsub_s : gen_helper_fadd_s);
- } else {
- do_fop_dedd(ctx, tm, rm1, rm2, gen_helper_fmpy_d);
- do_fop_dedd(ctx, ta, ta, ra,
- is_sub ? gen_helper_fsub_d : gen_helper_fadd_d);
- }
+ do_fop_weww(ctx, tm, rm1, rm2, gen_helper_fmpy_s);
+ do_fop_weww(ctx, ta, ta, ra,
+ is_sub ? gen_helper_fsub_s : gen_helper_fadd_s);
return nullify_end(ctx);
}
+static bool trans_fmpyadd_f(DisasContext *ctx, arg_mpyadd *a)
+{
+ return do_fmpyadd_s(ctx, a, false);
+}
+
+static bool trans_fmpysub_f(DisasContext *ctx, arg_mpyadd *a)
+{
+ return do_fmpyadd_s(ctx, a, true);
+}
+
+static bool do_fmpyadd_d(DisasContext *ctx, arg_mpyadd *a, bool is_sub)
+{
+ nullify_over(ctx);
+
+ do_fop_dedd(ctx, a->tm, a->rm1, a->rm2, gen_helper_fmpy_d);
+ do_fop_dedd(ctx, a->ta, a->ta, a->ra,
+ is_sub ? gen_helper_fsub_d : gen_helper_fadd_d);
+
+ return nullify_end(ctx);
+}
+
+static bool trans_fmpyadd_d(DisasContext *ctx, arg_mpyadd *a)
+{
+ return do_fmpyadd_d(ctx, a, false);
+}
+
+static bool trans_fmpysub_d(DisasContext *ctx, arg_mpyadd *a)
+{
+ return do_fmpyadd_d(ctx, a, true);
+}
+
static bool trans_fmpyfadd_s(DisasContext *ctx, uint32_t insn,
const DisasInsn *di)
{
@@ -4376,9 +4393,6 @@ static void translate_one(DisasContext *ctx, uint32_t insn)
opc = extract32(insn, 26, 6);
switch (opc) {
- case 0x06:
- trans_fmpyadd(ctx, insn, false);
- return;
case 0x08:
trans_ldil(ctx, insn);
return;
@@ -4456,9 +4470,6 @@ static void translate_one(DisasContext *ctx, uint32_t insn)
case 0x25:
trans_subi(ctx, insn);
return;
- case 0x26:
- trans_fmpyadd(ctx, insn, true);
- return;
case 0x27:
trans_cmpb(ctx, insn, true, false, true);
return;