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[Qemu-devel] [PULL 06/65] tcg/arm: Implement field extraction opcodes
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 06/65] tcg/arm: Implement field extraction opcodes |
Date: |
Tue, 10 Jan 2017 18:17:21 -0800 |
Reviewed-by: Alex Bennée <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/arm/tcg-target.h | 4 ++--
tcg/arm/tcg-target.inc.c | 24 ++++++++++++++++++++++++
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h
index d1fe12b..4e30728 100644
--- a/tcg/arm/tcg-target.h
+++ b/tcg/arm/tcg-target.h
@@ -111,8 +111,8 @@ extern bool use_idiv_instructions;
#define TCG_TARGET_HAS_nand_i32 0
#define TCG_TARGET_HAS_nor_i32 0
#define TCG_TARGET_HAS_deposit_i32 use_armv7_instructions
-#define TCG_TARGET_HAS_extract_i32 0
-#define TCG_TARGET_HAS_sextract_i32 0
+#define TCG_TARGET_HAS_extract_i32 use_armv7_instructions
+#define TCG_TARGET_HAS_sextract_i32 use_armv7_instructions
#define TCG_TARGET_HAS_movcond_i32 1
#define TCG_TARGET_HAS_mulu2_i32 1
#define TCG_TARGET_HAS_muls2_i32 1
diff --git a/tcg/arm/tcg-target.inc.c b/tcg/arm/tcg-target.inc.c
index 1415c27..2d5af0f 100644
--- a/tcg/arm/tcg-target.inc.c
+++ b/tcg/arm/tcg-target.inc.c
@@ -713,6 +713,22 @@ static inline void tcg_out_deposit(TCGContext *s, int
cond, TCGReg rd,
| (ofs << 7) | ((ofs + len - 1) << 16));
}
+static inline void tcg_out_extract(TCGContext *s, int cond, TCGReg rd,
+ TCGArg a1, int ofs, int len)
+{
+ /* ubfx */
+ tcg_out32(s, 0x07e00050 | (cond << 28) | (rd << 12) | a1
+ | (ofs << 7) | ((len - 1) << 16));
+}
+
+static inline void tcg_out_sextract(TCGContext *s, int cond, TCGReg rd,
+ TCGArg a1, int ofs, int len)
+{
+ /* sbfx */
+ tcg_out32(s, 0x07a00050 | (cond << 28) | (rd << 12) | a1
+ | (ofs << 7) | ((len - 1) << 16));
+}
+
/* Note that this routine is used for both LDR and LDRH formats, so we do
not wish to include an immediate shift at this point. */
static void tcg_out_memop_r(TCGContext *s, int cond, ARMInsn opc, TCGReg rt,
@@ -1894,6 +1910,12 @@ static inline void tcg_out_op(TCGContext *s, TCGOpcode
opc,
tcg_out_deposit(s, COND_AL, args[0], args[2],
args[3], args[4], const_args[2]);
break;
+ case INDEX_op_extract_i32:
+ tcg_out_extract(s, COND_AL, args[0], args[1], args[2], args[3]);
+ break;
+ case INDEX_op_sextract_i32:
+ tcg_out_sextract(s, COND_AL, args[0], args[1], args[2], args[3]);
+ break;
case INDEX_op_div_i32:
tcg_out_sdiv(s, COND_AL, args[0], args[1], args[2]);
@@ -1976,6 +1998,8 @@ static const TCGTargetOpDef arm_op_defs[] = {
{ INDEX_op_ext16u_i32, { "r", "r" } },
{ INDEX_op_deposit_i32, { "r", "0", "rZ" } },
+ { INDEX_op_extract_i32, { "r", "r" } },
+ { INDEX_op_sextract_i32, { "r", "r" } },
{ INDEX_op_div_i32, { "r", "r", "r" } },
{ INDEX_op_divu_i32, { "r", "r", "r" } },
--
2.9.3
- [Qemu-devel] [PULL 00/65] tcg 2.9 patch queue, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 02/65] tcg: Minor adjustments to deposit expanders, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 04/65] tcg/aarch64: Implement field extraction opcodes, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 03/65] tcg: Add deposit_z expander, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 05/65] tcg/arm: Move isa detection to tcg-target.h, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 06/65] tcg/arm: Implement field extraction opcodes,
Richard Henderson <=
- [Qemu-devel] [PULL 07/65] tcg/i386: Implement field extraction opcodes, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 08/65] tcg/mips: Implement field extraction opcodes, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 01/65] tcg: Add field extraction primitives, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 09/65] tcg/ppc: Implement field extraction opcodes, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 12/65] tcg/s390: Support deposit into zero, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 11/65] tcg/s390: Implement field extraction opcodes, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 10/65] tcg/s390: Expose host facilities to tcg-target.h, Richard Henderson, 2017/01/10
- [Qemu-devel] [PULL 13/65] target-alpha: Use deposit and extract ops, Richard Henderson, 2017/01/10