From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 19 Jan 2015 13:35:51 +0100 (CET) Received: from mailapp01.imgtec.com ([195.59.15.196]:62571 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S27011794AbbASMfuCenyE (ORCPT ); Mon, 19 Jan 2015 13:35:50 +0100 Received: from KLMAIL01.kl.imgtec.org (unknown [192.168.5.35]) by Websense Email Security Gateway with ESMTPS id 9CAAE1535931E; Mon, 19 Jan 2015 12:35:41 +0000 (GMT) Received: from LEMAIL01.le.imgtec.org (192.168.152.62) by KLMAIL01.kl.imgtec.org (192.168.5.35) with Microsoft SMTP Server (TLS) id 14.3.195.1; Mon, 19 Jan 2015 12:35:44 +0000 Received: from [192.168.154.96] (192.168.154.96) by LEMAIL01.le.imgtec.org (192.168.152.62) with Microsoft SMTP Server (TLS) id 14.3.210.2; Mon, 19 Jan 2015 12:35:43 +0000 Message-ID: <54BCFA1F.8060101@imgtec.com> Date: Mon, 19 Jan 2015 12:35:43 +0000 From: Markos Chandras User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Sergei Shtylyov , CC: Leonid Yegoshin Subject: Re: [PATCH RFC v2 05/70] MIPS: mm: uasm: Add signed 9-bit immediate related macros References: <1421405389-15512-1-git-send-email-markos.chandras@imgtec.com> <1421405389-15512-6-git-send-email-markos.chandras@imgtec.com> <54B8F609.90509@cogentembedded.com> In-Reply-To: <54B8F609.90509@cogentembedded.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.154.96] Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 45308 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: Markos.Chandras@imgtec.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On 01/16/2015 11:29 AM, Sergei Shtylyov wrote: > Hello. > > On 1/16/2015 1:48 PM, Markos Chandras wrote: > >> From: Leonid Yegoshin > >> MIPS R6 redefines several instructions and reduces the immediate >> field to 9-bits so add related macros for the microassembler. > >> Signed-off-by: Leonid Yegoshin >> Signed-off-by: Markos Chandras >> --- >> arch/mips/mm/uasm.c | 13 ++++++++++++- >> 1 file changed, 12 insertions(+), 1 deletion(-) > >> diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c >> index 4adf30284813..6596b6898637 100644 >> --- a/arch/mips/mm/uasm.c >> +++ b/arch/mips/mm/uasm.c > [...] >> @@ -41,6 +42,8 @@ enum fields { >> #define FUNC_SH 0 >> #define SET_MASK 0x7 >> #define SET_SH 0 >> +#define SIMM9_SH 7 >> +#define SIMM9_MASK 0x1ff >> >> enum opcode { >> insn_invalid, >> @@ -116,6 +119,14 @@ static inline u32 build_scimm(u32 arg) >> return (arg & SCIMM_MASK) << SCIMM_SH; >> } >> >> +static inline u32 build_scimm9(s32 arg) >> +{ >> + WARN((arg > 0x1ff || arg < -0x200), > > Not 0xFF and -0x100? The values above don't fit into 9 bits... Hi, I think 0x1ff and -0x200 fit into 9-bits. Why do you think they don't? -- markos From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailapp01.imgtec.com ([195.59.15.196]:62571 "EHLO mailapp01.imgtec.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S27011794AbbASMfuCenyE (ORCPT ); Mon, 19 Jan 2015 13:35:50 +0100 Message-ID: <54BCFA1F.8060101@imgtec.com> Date: Mon, 19 Jan 2015 12:35:43 +0000 From: Markos Chandras MIME-Version: 1.0 Subject: Re: [PATCH RFC v2 05/70] MIPS: mm: uasm: Add signed 9-bit immediate related macros References: <1421405389-15512-1-git-send-email-markos.chandras@imgtec.com> <1421405389-15512-6-git-send-email-markos.chandras@imgtec.com> <54B8F609.90509@cogentembedded.com> In-Reply-To: <54B8F609.90509@cogentembedded.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Return-Path: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: Sergei Shtylyov , linux-mips@linux-mips.org Cc: Leonid Yegoshin Message-ID: <20150119123543.-QtnSifH5NINO5j-aEA8fvGL5f-bbqOT6xqBz-d58EY@z> On 01/16/2015 11:29 AM, Sergei Shtylyov wrote: > Hello. > > On 1/16/2015 1:48 PM, Markos Chandras wrote: > >> From: Leonid Yegoshin > >> MIPS R6 redefines several instructions and reduces the immediate >> field to 9-bits so add related macros for the microassembler. > >> Signed-off-by: Leonid Yegoshin >> Signed-off-by: Markos Chandras >> --- >> arch/mips/mm/uasm.c | 13 ++++++++++++- >> 1 file changed, 12 insertions(+), 1 deletion(-) > >> diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c >> index 4adf30284813..6596b6898637 100644 >> --- a/arch/mips/mm/uasm.c >> +++ b/arch/mips/mm/uasm.c > [...] >> @@ -41,6 +42,8 @@ enum fields { >> #define FUNC_SH 0 >> #define SET_MASK 0x7 >> #define SET_SH 0 >> +#define SIMM9_SH 7 >> +#define SIMM9_MASK 0x1ff >> >> enum opcode { >> insn_invalid, >> @@ -116,6 +119,14 @@ static inline u32 build_scimm(u32 arg) >> return (arg & SCIMM_MASK) << SCIMM_SH; >> } >> >> +static inline u32 build_scimm9(s32 arg) >> +{ >> + WARN((arg > 0x1ff || arg < -0x200), > > Not 0xFF and -0x100? The values above don't fit into 9 bits... Hi, I think 0x1ff and -0x200 fit into 9-bits. Why do you think they don't? -- markos