From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-fx0-f49.google.com ([209.85.161.49]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QpI7A-0005cf-48 for barebox@lists.infradead.org; Fri, 05 Aug 2011 10:58:54 +0000 Received: by fxd20 with SMTP id 20so263425fxd.36 for ; Fri, 05 Aug 2011 03:58:51 -0700 (PDT) From: Antony Pavlov Date: Fri, 5 Aug 2011 14:58:32 +0400 Message-Id: <1312541922-696-3-git-send-email-antonynpavlov@gmail.com> In-Reply-To: <1312541922-696-1-git-send-email-antonynpavlov@gmail.com> References: <1312541922-696-1-git-send-email-antonynpavlov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 02/12] MIPS: import libgcc-related files from linux-2.6.39 To: barebox@lists.infradead.org Signed-off-by: Antony Pavlov --- arch/mips/lib/ashldi3.c | 28 ++++++++++++++++++++++++++++ arch/mips/lib/ashrdi3.c | 30 ++++++++++++++++++++++++++++++ arch/mips/lib/libgcc.h | 25 +++++++++++++++++++++++++ arch/mips/lib/lshrdi3.c | 28 ++++++++++++++++++++++++++++ 4 files changed, 111 insertions(+), 0 deletions(-) create mode 100644 arch/mips/lib/ashldi3.c create mode 100644 arch/mips/lib/ashrdi3.c create mode 100644 arch/mips/lib/libgcc.h create mode 100644 arch/mips/lib/lshrdi3.c diff --git a/arch/mips/lib/ashldi3.c b/arch/mips/lib/ashldi3.c new file mode 100644 index 0000000..cbdbcbb --- /dev/null +++ b/arch/mips/lib/ashldi3.c @@ -0,0 +1,28 @@ +#include + +#include "libgcc.h" + +long long __ashldi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + w.s.low = 0; + w.s.high = (unsigned int) uu.s.low << -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.low >> bm; + + w.s.low = (unsigned int) uu.s.low << b; + w.s.high = ((unsigned int) uu.s.high << b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__ashldi3); diff --git a/arch/mips/lib/ashrdi3.c b/arch/mips/lib/ashrdi3.c new file mode 100644 index 0000000..928d6d9 --- /dev/null +++ b/arch/mips/lib/ashrdi3.c @@ -0,0 +1,30 @@ +#include + +#include "libgcc.h" + +long long __ashrdi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + /* w.s.high = 1..1 or 0..0 */ + w.s.high = + uu.s.high >> 31; + w.s.low = uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__ashrdi3); diff --git a/arch/mips/lib/libgcc.h b/arch/mips/lib/libgcc.h new file mode 100644 index 0000000..05909d5 --- /dev/null +++ b/arch/mips/lib/libgcc.h @@ -0,0 +1,25 @@ +#ifndef __ASM_LIBGCC_H +#define __ASM_LIBGCC_H + +#include + +typedef int word_type __attribute__ ((mode (__word__))); + +#ifdef __BIG_ENDIAN +struct DWstruct { + int high, low; +}; +#elif defined(__LITTLE_ENDIAN) +struct DWstruct { + int low, high; +}; +#else +#error I feel sick. +#endif + +typedef union { + struct DWstruct s; + long long ll; +} DWunion; + +#endif /* __ASM_LIBGCC_H */ diff --git a/arch/mips/lib/lshrdi3.c b/arch/mips/lib/lshrdi3.c new file mode 100644 index 0000000..74a4846 --- /dev/null +++ b/arch/mips/lib/lshrdi3.c @@ -0,0 +1,28 @@ +#include + +#include "libgcc.h" + +long long __lshrdi3(long long u, word_type b) +{ + DWunion uu, w; + word_type bm; + + if (b == 0) + return u; + + uu.ll = u; + bm = 32 - b; + + if (bm <= 0) { + w.s.high = 0; + w.s.low = (unsigned int) uu.s.high >> -bm; + } else { + const unsigned int carries = (unsigned int) uu.s.high << bm; + + w.s.high = (unsigned int) uu.s.high >> b; + w.s.low = ((unsigned int) uu.s.low >> b) | carries; + } + + return w.ll; +} +EXPORT_SYMBOL(__lshrdi3); -- 1.7.5.4 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox