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[Qemu-devel] [PATCH v2 16/27] tcg-ppc64: Implement bswap16 and bswap32
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v2 16/27] tcg-ppc64: Implement bswap16 and bswap32 |
Date: |
Mon, 4 Mar 2013 16:32:59 -0800 |
Signed-off-by: Richard Henderson <address@hidden>
---
tcg/ppc64/tcg-target.c | 43 +++++++++++++++++++++++++++++++++++++++++++
tcg/ppc64/tcg-target.h | 18 ++++++++++--------
2 files changed, 53 insertions(+), 8 deletions(-)
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c
index a08ad90..723cc77 100644
--- a/tcg/ppc64/tcg-target.c
+++ b/tcg/ppc64/tcg-target.c
@@ -1668,6 +1668,44 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc,
const TCGArg *args,
const_args[2]);
break;
+ case INDEX_op_bswap16_i32:
+ case INDEX_op_bswap16_i64:
+ a0 = args[0], a1 = args[1];
+ /* a1 = abcd */
+ if (a0 != a1) {
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = (a0 & ~0xff00) | (a1 r<< 8) & 0xff00 # 00dc */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 8, 16, 23);
+ } else {
+ /* r0 = (a1 r<< 8) & 0xff00 # 00d0 */
+ tcg_out_rlw(s, RLWINM, 0, a1, 8, 16, 23);
+ /* a0 = (a1 r<< 24) & 0xff # 000c */
+ tcg_out_rlw(s, RLWINM, a0, a1, 24, 24, 31);
+ /* a0 = a0 | r0 # 00dc */
+ tcg_out32(s, OR | SAB(0, a0, a0));
+ }
+ break;
+
+ case INDEX_op_bswap32_i32:
+ case INDEX_op_bswap32_i64:
+ /* Stolen from gcc's builtin_bswap32 */
+ a1 = args[1];
+ a0 = args[0] == a1 ? 0 : args[0];
+
+ /* a1 = args[1] # abcd */
+ /* a0 = rotate_left (a1, 8) # bcda */
+ tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31);
+ /* a0 = (a0 & ~0xff000000) | ((a1 r<< 24) & 0xff000000) # dcda */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7);
+ /* a0 = (a0 & ~0x0000ff00) | ((a1 r<< 24) & 0x0000ff00) # dcba */
+ tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23);
+
+ if (!a0) {
+ tcg_out_mov(s, TCG_TYPE_I64, args[0], a0);
+ }
+ break;
+
default:
tcg_dump_ops (s);
tcg_abort ();
@@ -1774,6 +1812,11 @@ static const TCGTargetOpDef ppc_op_defs[] = {
{ INDEX_op_setcond_i32, { "r", "r", "ri" } },
{ INDEX_op_setcond_i64, { "r", "r", "ri" } },
+ { INDEX_op_bswap16_i32, { "r", "r" } },
+ { INDEX_op_bswap16_i64, { "r", "r" } },
+ { INDEX_op_bswap32_i32, { "r", "r" } },
+ { INDEX_op_bswap32_i64, { "r", "r" } },
+
{ -1 },
};
diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h
index dbefe7d..bd011b8 100644
--- a/tcg/ppc64/tcg-target.h
+++ b/tcg/ppc64/tcg-target.h
@@ -67,15 +67,19 @@ typedef enum {
#define TCG_TARGET_STACK_ALIGN 16
#define TCG_TARGET_CALL_STACK_OFFSET 48
+/* optional instructions automatically implemented */
+#define TCG_TARGET_HAS_ext8u_i32 0 /* andi */
+#define TCG_TARGET_HAS_ext16u_i32 0
+#define TCG_TARGET_HAS_ext8u_i64 0
+#define TCG_TARGET_HAS_ext16u_i64 0
+
/* optional instructions */
#define TCG_TARGET_HAS_div_i32 1
#define TCG_TARGET_HAS_rot_i32 1
#define TCG_TARGET_HAS_ext8s_i32 1
#define TCG_TARGET_HAS_ext16s_i32 1
-#define TCG_TARGET_HAS_ext8u_i32 0
-#define TCG_TARGET_HAS_ext16u_i32 0
-#define TCG_TARGET_HAS_bswap16_i32 0
-#define TCG_TARGET_HAS_bswap32_i32 0
+#define TCG_TARGET_HAS_bswap16_i32 1
+#define TCG_TARGET_HAS_bswap32_i32 1
#define TCG_TARGET_HAS_not_i32 1
#define TCG_TARGET_HAS_neg_i32 1
#define TCG_TARGET_HAS_andc_i32 0
@@ -95,11 +99,9 @@ typedef enum {
#define TCG_TARGET_HAS_ext8s_i64 1
#define TCG_TARGET_HAS_ext16s_i64 1
#define TCG_TARGET_HAS_ext32s_i64 1
-#define TCG_TARGET_HAS_ext8u_i64 0
-#define TCG_TARGET_HAS_ext16u_i64 0
#define TCG_TARGET_HAS_ext32u_i64 1
-#define TCG_TARGET_HAS_bswap16_i64 0
-#define TCG_TARGET_HAS_bswap32_i64 0
+#define TCG_TARGET_HAS_bswap16_i64 1
+#define TCG_TARGET_HAS_bswap32_i64 1
#define TCG_TARGET_HAS_bswap64_i64 0
#define TCG_TARGET_HAS_not_i64 1
#define TCG_TARGET_HAS_neg_i64 1
--
1.8.1.2
- [Qemu-devel] [PATCH v2 06/27] tcg-ppc64: Introduce and use tcg_out_shri64, (continued)
- [Qemu-devel] [PATCH v2 06/27] tcg-ppc64: Introduce and use tcg_out_shri64, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 07/27] tcg-ppc64: Cleanup tcg_out_movi, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 09/27] tcg-ppc64: Rearrange integer constant constraints, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 10/27] tcg-ppc64: Improve constant add and sub ops., Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 08/27] tcg-ppc64: Introduce and use TAI and SAI, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 11/27] tcg-ppc64: Tidy or and xor patterns., Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 12/27] tcg-ppc64: Improve and_i32 with constant, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 13/27] tcg-ppc64: Improve and_i64 with constant, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 14/27] tcg-ppc64: Streamline qemu_ld/st insn selection, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 15/27] tcg-ppc64: Implement rotates, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 16/27] tcg-ppc64: Implement bswap16 and bswap32,
Richard Henderson <=
- [Qemu-devel] [PATCH v2 17/27] tcg-ppc64: Implement bswap64, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 18/27] tcg-ppc64: Implement compound logicals, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 19/27] tcg-ppc64: Handle constant inputs for some compound logicals, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 20/27] tcg-ppc64: Implement deposit, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 21/27] tcg-ppc64: Use I constraint for mul, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 22/27] tcg-ppc64: Use TCGType throughout compares, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 23/27] tcg-ppc64: Rewrite setcond, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 24/27] tcg-ppc64: Implement movcond, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 25/27] tcg-ppc64: Use getauxval for ISA detection, Richard Henderson, 2013/03/04
- [Qemu-devel] [PATCH v2 26/27] tcg-ppc64: Implement add2/sub2_i64, Richard Henderson, 2013/03/04