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From: Taylor Simpson <tsimpson@quicinc.com>
To: qemu-devel@nongnu.org
Cc: tsimpson@quicinc.com, richard.henderson@linaro.org,
	philmd@linaro.org, ale@rev.ng, anjo@rev.ng, bcain@quicinc.com,
	quic_mathbern@quicinc.com
Subject: [PATCH v4 03/13] Hexagon (target/hexagon) Add overrides for endloop1/endloop01
Date: Tue, 24 Jan 2023 18:42:05 -0800	[thread overview]
Message-ID: <20230125024215.10430-4-tsimpson@quicinc.com> (raw)
In-Reply-To: <20230125024215.10430-1-tsimpson@quicinc.com>

Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
 target/hexagon/gen_tcg.h |  4 ++
 target/hexagon/genptr.c  | 79 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)

diff --git a/target/hexagon/gen_tcg.h b/target/hexagon/gen_tcg.h
index 9e8f3373ad..6267f51ccc 100644
--- a/target/hexagon/gen_tcg.h
+++ b/target/hexagon/gen_tcg.h
@@ -628,6 +628,10 @@
 
 #define fGEN_TCG_J2_endloop0(SHORTCODE) \
     gen_endloop0(ctx)
+#define fGEN_TCG_J2_endloop1(SHORTCODE) \
+    gen_endloop1(ctx)
+#define fGEN_TCG_J2_endloop01(SHORTCODE) \
+    gen_endloop01(ctx)
 
 /*
  * Compound compare and jump instructions
diff --git a/target/hexagon/genptr.c b/target/hexagon/genptr.c
index 360bcd0a19..e17ac93a59 100644
--- a/target/hexagon/genptr.c
+++ b/target/hexagon/genptr.c
@@ -803,6 +803,85 @@ static void gen_endloop0(DisasContext *ctx)
     tcg_temp_free(lpcfg);
 }
 
+static void gen_endloop1(DisasContext *ctx)
+{
+    /*
+     *    if (hex_gpr[HEX_REG_LC1] > 1) {
+     *        PC = hex_gpr[HEX_REG_SA1];
+     *        hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
+     *    }
+     */
+    TCGLabel *label = gen_new_label();
+    tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, label);
+    {
+        gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]);
+        tcg_gen_subi_tl(hex_new_value[HEX_REG_LC1], hex_gpr[HEX_REG_LC1], 1);
+    }
+    gen_set_label(label);
+}
+
+static void gen_endloop01(DisasContext *ctx)
+{
+    TCGv lpcfg = tcg_temp_local_new();
+
+    GET_USR_FIELD(USR_LPCFG, lpcfg);
+
+    /*
+     *    if (lpcfg == 1) {
+     *        hex_new_pred_value[3] = 0xff;
+     *        hex_pred_written |= 1 << 3;
+     *    }
+     */
+    TCGLabel *label1 = gen_new_label();
+    tcg_gen_brcondi_tl(TCG_COND_NE, lpcfg, 1, label1);
+    {
+        tcg_gen_movi_tl(hex_new_pred_value[3], 0xff);
+        tcg_gen_ori_tl(hex_pred_written, hex_pred_written, 1 << 3);
+    }
+    gen_set_label(label1);
+
+    /*
+     *    if (lpcfg) {
+     *        SET_USR_FIELD(USR_LPCFG, lpcfg - 1);
+     *    }
+     */
+    TCGLabel *label2 = gen_new_label();
+    tcg_gen_brcondi_tl(TCG_COND_EQ, lpcfg, 0, label2);
+    {
+        tcg_gen_subi_tl(lpcfg, lpcfg, 1);
+        SET_USR_FIELD(USR_LPCFG, lpcfg);
+    }
+    gen_set_label(label2);
+
+    /*
+     *    if (hex_gpr[HEX_REG_LC0] > 1) {
+     *        PC = hex_gpr[HEX_REG_SA0];
+     *        hex_new_value[HEX_REG_LC0] = hex_gpr[HEX_REG_LC0] - 1;
+     *    } else {
+     *        if (hex_gpr[HEX_REG_LC1] > 1) {
+     *            hex_next_pc = hex_gpr[HEX_REG_SA1];
+     *            hex_new_value[HEX_REG_LC1] = hex_gpr[HEX_REG_LC1] - 1;
+     *        }
+     *    }
+     */
+    TCGLabel *label3 = gen_new_label();
+    TCGLabel *done = gen_new_label();
+    tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC0], 1, label3);
+    {
+        gen_jumpr(ctx, hex_gpr[HEX_REG_SA0]);
+        tcg_gen_subi_tl(hex_new_value[HEX_REG_LC0], hex_gpr[HEX_REG_LC0], 1);
+        tcg_gen_br(done);
+    }
+    gen_set_label(label3);
+    tcg_gen_brcondi_tl(TCG_COND_LEU, hex_gpr[HEX_REG_LC1], 1, done);
+    {
+        gen_jumpr(ctx, hex_gpr[HEX_REG_SA1]);
+        tcg_gen_subi_tl(hex_new_value[HEX_REG_LC1], hex_gpr[HEX_REG_LC1], 1);
+    }
+    gen_set_label(done);
+    tcg_temp_free(lpcfg);
+}
+
 static void gen_cmp_jumpnv(DisasContext *ctx,
                            TCGCond cond, TCGv val, TCGv src, int pc_off)
 {
-- 
2.17.1


  parent reply	other threads:[~2023-01-25  2:44 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-25  2:42 [PATCH v4 00/13] Hexagon: COF overrides, new generator, test/bug update Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 01/13] Hexagon (target/hexagon) Add overrides for jumpr31 instructions Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 02/13] Hexagon (target/hexagon) Add overrides for callr Taylor Simpson
2023-01-25  2:42 ` Taylor Simpson [this message]
2023-01-25  2:42 ` [PATCH v4 04/13] Hexagon (target/hexagon) Add overrides for dealloc-return instructions Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 05/13] Hexagon (target/hexagon) Analyze packet before generating TCG Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 06/13] Hexagon (target/hexagon) Analyze packet for HVX Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 07/13] Hexagon (tests/tcg/hexagon) Update preg_alias.c Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 08/13] Hexagon (tests/tcg/hexagon) Remove __builtin from scatter_gather Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 09/13] Hexagon (tests/tcg/hexagon) Enable HVX tests Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 10/13] Hexagon (target/hexagon) Change subtract from zero to change sign Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 11/13] Hexagon (target/hexagon) Remove gen_log_predicated_reg_write[_pair] Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 12/13] Hexagon (target/hexagon) Reduce manipulation of slot_cancelled Taylor Simpson
2023-01-25  2:42 ` [PATCH v4 13/13] Hexagon (target/hexagon) Improve code gen for predicated HVX instructions Taylor Simpson

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