From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KwtYF-00037q-9D for qemu-devel@nongnu.org; Mon, 03 Nov 2008 02:08:39 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KwtYE-00037A-Gb for qemu-devel@nongnu.org; Mon, 03 Nov 2008 02:08:38 -0500 Received: from [199.232.76.173] (port=36163 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KwtYE-000370-3N for qemu-devel@nongnu.org; Mon, 03 Nov 2008 02:08:38 -0500 Received: from savannah.gnu.org ([199.232.41.3]:46649 helo=sv.gnu.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KwtYD-0001h5-PC for qemu-devel@nongnu.org; Mon, 03 Nov 2008 02:08:37 -0500 Received: from cvs.savannah.gnu.org ([199.232.41.69]) by sv.gnu.org with esmtp (Exim 4.63) (envelope-from ) id 1KwtYD-0004KG-5d for qemu-devel@nongnu.org; Mon, 03 Nov 2008 07:08:37 +0000 Received: from aurel32 by cvs.savannah.gnu.org with local (Exim 4.63) (envelope-from ) id 1KwtYC-0004KC-UE for qemu-devel@nongnu.org; Mon, 03 Nov 2008 07:08:37 +0000 MIME-Version: 1.0 Errors-To: aurel32 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Aurelien Jarno Message-Id: Date: Mon, 03 Nov 2008 07:08:36 +0000 Subject: [Qemu-devel] [5607] tcg-ops.h: add rotl/rotli and rotr/rotri TCG instructions Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org 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 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