[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [5607] tcg-ops.h: add rotl/rotli and rotr/rotri TCG instruc
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [5607] tcg-ops.h: add rotl/rotli and rotr/rotri TCG instructions |
Date: |
Mon, 03 Nov 2008 07:08:36 +0000 |
Revision: 5607
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5607
Author: aurel32
Date: 2008-11-03 07:08:36 +0000 (Mon, 03 Nov 2008)
Log Message:
-----------
tcg-ops.h: add rotl/rotli and rotr/rotri TCG instructions
Signed-off-by: Aurelien Jarno <address@hidden>
Modified Paths:
--------------
trunk/tcg/README
trunk/tcg/tcg-op.h
Modified: trunk/tcg/README
===================================================================
--- trunk/tcg/README 2008-11-03 07:08:26 UTC (rev 5606)
+++ trunk/tcg/README 2008-11-03 07:08:36 UTC (rev 5607)
@@ -225,7 +225,7 @@
t0=t1|~t2
-********* Shifts
+********* Shifts/Rotates
* shl_i32/i64 t0, t1, t2
@@ -239,6 +239,14 @@
t0=t1 >> t2 (signed). Undefined behavior if t2 < 0 or t2 >= 32 (resp 64)
+* rotl_i32/i64 t0, t1, t2
+
+Rotation of t2 bits to the left. Undefined behavior if t2 < 0 or t2 >= 32
(resp 64)
+
+* rotr_i32/i64 t0, t1, t2
+
+Rotation of t2 bits to the right. Undefined behavior if t2 < 0 or t2 >= 32
(resp 64)
+
********* Misc
* mov_i32/i64 t0, t1
Modified: trunk/tcg/tcg-op.h
===================================================================
--- trunk/tcg/tcg-op.h 2008-11-03 07:08:26 UTC (rev 5606)
+++ trunk/tcg/tcg-op.h 2008-11-03 07:08:36 UTC (rev 5607)
@@ -1518,6 +1518,116 @@
tcg_temp_free(t0);
}
+static inline void tcg_gen_rotl_i32(TCGv ret, TCGv arg1, TCGv arg2)
+{
+ TCGv t0, t1;
+
+ t0 = tcg_temp_new(TCG_TYPE_I32);
+ t1 = tcg_temp_new(TCG_TYPE_I32);
+ tcg_gen_shl_i32(t0, arg1, arg2);
+ tcg_gen_subfi_i32(t1, 32, arg2);
+ tcg_gen_shr_i32(t1, arg1, t1);
+ tcg_gen_or_i32(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static inline void tcg_gen_rotl_i64(TCGv ret, TCGv arg1, TCGv arg2)
+{
+ TCGv t0, t1;
+
+ t0 = tcg_temp_new(TCG_TYPE_I64);
+ t1 = tcg_temp_new(TCG_TYPE_I64);
+ tcg_gen_shl_i64(t0, arg1, arg2);
+ tcg_gen_subfi_i64(t1, 64, arg2);
+ tcg_gen_shr_i64(t1, arg1, t1);
+ tcg_gen_or_i64(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static inline void tcg_gen_rotli_i32(TCGv ret, TCGv arg1, int32_t arg2)
+{
+ /* some cases can be optimized here */
+ if (arg2 == 0) {
+ tcg_gen_mov_i32(ret, arg1);
+ } else {
+ TCGv t0, t1;
+ t0 = tcg_temp_new(TCG_TYPE_I32);
+ t1 = tcg_temp_new(TCG_TYPE_I32);
+ tcg_gen_shli_i32(t0, arg1, arg2);
+ tcg_gen_shri_i32(t1, arg1, 32 - arg2);
+ tcg_gen_or_i32(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+ }
+}
+
+static inline void tcg_gen_rotli_i64(TCGv ret, TCGv arg1, int64_t arg2)
+{
+ /* some cases can be optimized here */
+ if (arg2 == 0) {
+ tcg_gen_mov_i64(ret, arg1);
+ } else {
+ TCGv t0, t1;
+ t0 = tcg_temp_new(TCG_TYPE_I64);
+ t1 = tcg_temp_new(TCG_TYPE_I64);
+ tcg_gen_shli_i64(t0, arg1, arg2);
+ tcg_gen_shri_i64(t1, arg1, 64 - arg2);
+ tcg_gen_or_i64(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+ }
+}
+
+static inline void tcg_gen_rotr_i32(TCGv ret, TCGv arg1, TCGv arg2)
+{
+ TCGv t0, t1;
+
+ t0 = tcg_temp_new(TCG_TYPE_I32);
+ t1 = tcg_temp_new(TCG_TYPE_I32);
+ tcg_gen_shr_i32(t0, arg1, arg2);
+ tcg_gen_subfi_i32(t1, 32, arg2);
+ tcg_gen_shl_i32(t1, arg1, t1);
+ tcg_gen_or_i32(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static inline void tcg_gen_rotr_i64(TCGv ret, TCGv arg1, TCGv arg2)
+{
+ TCGv t0, t1;
+
+ t0 = tcg_temp_new(TCG_TYPE_I64);
+ t1 = tcg_temp_new(TCG_TYPE_I64);
+ tcg_gen_shl_i64(t0, arg1, arg2);
+ tcg_gen_subfi_i64(t1, 64, arg2);
+ tcg_gen_shl_i64(t1, arg1, t1);
+ tcg_gen_or_i64(ret, t0, t1);
+ tcg_temp_free(t0);
+ tcg_temp_free(t1);
+}
+
+static inline void tcg_gen_rotri_i32(TCGv ret, TCGv arg1, int32_t arg2)
+{
+ /* some cases can be optimized here */
+ if (arg2 == 0) {
+ tcg_gen_mov_i32(ret, arg1);
+ } else {
+ tcg_gen_rotli_i32(ret, arg1, 32 - arg2);
+ }
+}
+
+static inline void tcg_gen_rotri_i64(TCGv ret, TCGv arg1, int64_t arg2)
+{
+ /* some cases can be optimized here */
+ if (arg2 == 0) {
+ tcg_gen_mov_i32(ret, arg1);
+ } else {
+ tcg_gen_rotli_i64(ret, arg1, 64 - arg2);
+ }
+}
+
/***************************************/
/* QEMU specific operations. Their type depend on the QEMU CPU
type. */
@@ -1777,6 +1887,10 @@
#define tcg_gen_nand_tl tcg_gen_nand_i64
#define tcg_gen_nor_tl tcg_gen_nor_i64
#define tcg_gen_orc_tl tcg_gen_orc_i64
+#define tcg_gen_rotl_tl tcg_gen_rotl_i64
+#define tcg_gen_rotli_tl tcg_gen_rotli_i64
+#define tcg_gen_rotr_tl tcg_gen_rotr_i64
+#define tcg_gen_rotri_tl tcg_gen_rotri_i64
#define tcg_const_tl tcg_const_i64
#define tcg_const_local_tl tcg_const_local_i64
#else
@@ -1836,6 +1950,10 @@
#define tcg_gen_nand_tl tcg_gen_nand_i32
#define tcg_gen_nor_tl tcg_gen_nor_i32
#define tcg_gen_orc_tl tcg_gen_orc_i32
+#define tcg_gen_rotl_tl tcg_gen_rotl_i32
+#define tcg_gen_rotli_tl tcg_gen_rotli_i32
+#define tcg_gen_rotr_tl tcg_gen_rotr_i32
+#define tcg_gen_rotri_tl tcg_gen_rotri_i32
#define tcg_const_tl tcg_const_i32
#define tcg_const_local_tl tcg_const_local_i32
#endif
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Qemu-devel] [5607] tcg-ops.h: add rotl/rotli and rotr/rotri TCG instructions,
Aurelien Jarno <=