dcavalca / rpms / qemu

Forked from rpms/qemu a year ago
Clone

Blame 0066-tcg-mips-implement-deposit-op-on-MIPS32R2.patch

5544c1
From 7c3e573b364a65d4abce5266c376f4e77624b039 Mon Sep 17 00:00:00 2001
5544c1
From: Aurelien Jarno <aurelien@aurel32.net>
5544c1
Date: Fri, 21 Sep 2012 18:20:26 +0200
5544c1
Subject: [PATCH] tcg/mips: implement deposit op on MIPS32R2
5544c1
5544c1
deposit operations can be optimized on MIPS32 Release 2 using the INS
5544c1
instruction.
5544c1
5544c1
Reviewed-by: Richard Henderson <rth@twiddle.net>
5544c1
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
5544c1
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
5544c1
---
5544c1
 tcg/mips/tcg-target.c | 8 ++++++++
5544c1
 tcg/mips/tcg-target.h | 3 ++-
5544c1
 2 files changed, 10 insertions(+), 1 deletion(-)
5544c1
5544c1
diff --git a/tcg/mips/tcg-target.c b/tcg/mips/tcg-target.c
5544c1
index 592e42a..b2e1056 100644
5544c1
--- a/tcg/mips/tcg-target.c
5544c1
+++ b/tcg/mips/tcg-target.c
5544c1
@@ -328,6 +328,7 @@ enum {
5544c1
     OPC_BGEZ     = OPC_REGIMM | (0x01 << 16),
5544c1
 
5544c1
     OPC_SPECIAL3 = 0x1f << 26,
5544c1
+    OPC_INS      = OPC_SPECIAL3 | 0x004,
5544c1
     OPC_WSBH     = OPC_SPECIAL3 | 0x0a0,
5544c1
     OPC_SEB      = OPC_SPECIAL3 | 0x420,
5544c1
     OPC_SEH      = OPC_SPECIAL3 | 0x620,
5544c1
@@ -1455,6 +1456,11 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode opc,
5544c1
         tcg_out_ext16s(s, args[0], args[1]);
5544c1
         break;
5544c1
 
5544c1
+    case INDEX_op_deposit_i32:
5544c1
+        tcg_out_opc_imm(s, OPC_INS, args[0], args[2],
5544c1
+                        ((args[3] + args[4] - 1) << 11) | (args[3] << 6));
5544c1
+        break;
5544c1
+
5544c1
     case INDEX_op_brcond_i32:
5544c1
         tcg_out_brcond(s, args[2], args[0], args[1], args[3]);
5544c1
         break;
5544c1
@@ -1550,6 +1556,8 @@ static const TCGTargetOpDef mips_op_defs[] = {
5544c1
     { INDEX_op_ext8s_i32, { "r", "rZ" } },
5544c1
     { INDEX_op_ext16s_i32, { "r", "rZ" } },
5544c1
 
5544c1
+    { INDEX_op_deposit_i32, { "r", "0", "rZ" } },
5544c1
+
5544c1
     { INDEX_op_brcond_i32, { "rZ", "rZ" } },
5544c1
     { INDEX_op_setcond_i32, { "r", "rZ", "rZ" } },
5544c1
     { INDEX_op_setcond2_i32, { "r", "rZ", "rZ", "rZ", "rZ" } },
5544c1
diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
5544c1
index 470314c..897a737 100644
5544c1
--- a/tcg/mips/tcg-target.h
5544c1
+++ b/tcg/mips/tcg-target.h
5544c1
@@ -86,7 +86,6 @@ typedef enum {
5544c1
 #define TCG_TARGET_HAS_orc_i32          0
5544c1
 #define TCG_TARGET_HAS_eqv_i32          0
5544c1
 #define TCG_TARGET_HAS_nand_i32         0
5544c1
-#define TCG_TARGET_HAS_deposit_i32      0
5544c1
 #define TCG_TARGET_HAS_movcond_i32      0
5544c1
 
5544c1
 /* optional instructions only implemented on MIPS32R2 */
5544c1
@@ -94,10 +93,12 @@ typedef enum {
5544c1
 #define TCG_TARGET_HAS_bswap16_i32      1
5544c1
 #define TCG_TARGET_HAS_bswap32_i32      1
5544c1
 #define TCG_TARGET_HAS_rot_i32          1
5544c1
+#define TCG_TARGET_HAS_deposit_i32      1
5544c1
 #else
5544c1
 #define TCG_TARGET_HAS_bswap16_i32      0
5544c1
 #define TCG_TARGET_HAS_bswap32_i32      0
5544c1
 #define TCG_TARGET_HAS_rot_i32          0
5544c1
+#define TCG_TARGET_HAS_deposit_i32      0
5544c1
 #endif
5544c1
 
5544c1
 /* optional instructions automatically implemented */
5544c1
-- 
5544c1
1.7.12.1
5544c1