From 0c505db0a0dc1f670b13ce3b4d3fbf1ec5b3cbd2 Mon Sep 17 00:00:00 2001 From: Jon Loeliger Date: Mon, 11 Jun 2007 19:03:03 -0500 Subject: lib_*/: Augment CONFIG_COMMANDS tests with defined(CONFIG_CMD_*). This is a compatibility step that allows both the older form and the new form to co-exist for a while until the older can be removed entirely. All transformations are of the form: Before: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) After: #if (CONFIG_COMMANDS & CFG_CMD_AUTOSCRIPT) || defined(CONFIG_CMD_AUTOSCRIPT) Signed-off-by: Jon Loeliger --- lib_generic/crc32.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'lib_generic') diff --git a/lib_generic/crc32.c b/lib_generic/crc32.c index 3d99b69296..84deba92cb 100644 --- a/lib_generic/crc32.c +++ b/lib_generic/crc32.c @@ -171,8 +171,9 @@ uLong ZEXPORT crc32(crc, buf, len) return crc ^ 0xffffffffL; } -#if (CONFIG_COMMANDS & CFG_CMD_JFFS2) || \ - ((CONFIG_COMMANDS & CFG_CMD_NAND) && !defined(CFG_NAND_LEGACY)) +#if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) || \ + (((CONFIG_COMMANDS & CFG_CMD_NAND) || defined(CONFIG_CMD_NAND)) \ + && !defined(CFG_NAND_LEGACY)) /* No ones complement version. JFFS2 (and other things ?) * don't use ones compliment in their CRC calculations. -- cgit From 67350568f9d46e66c21829f3513b3db0caeb948b Mon Sep 17 00:00:00 2001 From: Jon Loeliger Date: Mon, 9 Jul 2007 18:05:38 -0500 Subject: lib_{arm,avr32,blackfin,generic,i386}/: Remove obsolete references to CONFIG_COMMANDS Signed-off-by: Jon Loeliger --- lib_generic/crc32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'lib_generic') diff --git a/lib_generic/crc32.c b/lib_generic/crc32.c index 84deba92cb..da23336d2c 100644 --- a/lib_generic/crc32.c +++ b/lib_generic/crc32.c @@ -171,8 +171,8 @@ uLong ZEXPORT crc32(crc, buf, len) return crc ^ 0xffffffffL; } -#if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) || \ - (((CONFIG_COMMANDS & CFG_CMD_NAND) || defined(CONFIG_CMD_NAND)) \ +#if defined(CONFIG_CMD_JFFS2) || \ + (defined(CONFIG_CMD_NAND) \ && !defined(CFG_NAND_LEGACY)) /* No ones complement version. JFFS2 (and other things ?) -- cgit From b3aff0cb9ecf236d7e8c93761dd1dadf6837a582 Mon Sep 17 00:00:00 2001 From: Jon Loeliger Date: Tue, 10 Jul 2007 11:19:50 -0500 Subject: disk/ doc/ lib_*/ and tools/: Remove lingering references to CFG_CMD_* symbols. Fixed some broken instances of "#ifdef CMD_CFG_IDE" too. Those always evaluated TRUE, and thus were always compiled even when IDE really wasn't defined/wanted. Signed-off-by: Jon Loeliger --- lib_generic/crc32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'lib_generic') diff --git a/lib_generic/crc32.c b/lib_generic/crc32.c index da23336d2c..df0dbca346 100644 --- a/lib_generic/crc32.c +++ b/lib_generic/crc32.c @@ -9,7 +9,7 @@ */ #ifndef USE_HOSTCC /* Shut down "ANSI does not permit..." warnings */ -#include /* to get command definitions like CFG_CMD_JFFS2 */ +#include #endif #include "zlib.h" @@ -196,4 +196,4 @@ uLong ZEXPORT crc32_no_comp(uLong crc, const Bytef *buf, uInt len) return crc; } -#endif /* CFG_CMD_JFFS2 */ +#endif -- cgit From f7c086e94e8ce9aad7268af97f73aa6884686f27 Mon Sep 17 00:00:00 2001 From: Dirk Behme Date: Thu, 2 Aug 2007 17:41:14 +0200 Subject: Move 64bit division from avr32 to generic lib MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the 64bit division from lib_avr32 to lib_generic. With this, all boards can do_div/__div64_32 if needed, not only avr one. Code is put to lib_generic, so no larger memory footprint if not used. No code modifications. Thanks for proposal by Håvard Skinnemoen. Signed-off-by: Dirk Behme --- lib_generic/Makefile | 2 +- lib_generic/div64.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+), 1 deletion(-) create mode 100644 lib_generic/div64.c (limited to 'lib_generic') diff --git a/lib_generic/Makefile b/lib_generic/Makefile index b2091c5e78..bf377529c2 100644 --- a/lib_generic/Makefile +++ b/lib_generic/Makefile @@ -27,7 +27,7 @@ LIB = $(obj)libgeneric.a COBJS = bzlib.o bzlib_crctable.o bzlib_decompress.o \ bzlib_randtable.o bzlib_huffman.o \ - crc32.o ctype.o display_options.o ldiv.o sha1.o \ + crc32.o ctype.o display_options.o div64.o ldiv.o sha1.o \ string.o vsprintf.o zlib.o SRCS := $(COBJS:.o=.c) diff --git a/lib_generic/div64.c b/lib_generic/div64.c new file mode 100644 index 0000000000..d9951b597f --- /dev/null +++ b/lib_generic/div64.c @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2003 Bernardo Innocenti + * + * Based on former do_div() implementation from asm-parisc/div64.h: + * Copyright (C) 1999 Hewlett-Packard Co + * Copyright (C) 1999 David Mosberger-Tang + * + * + * Generic C version of 64bit/32bit division and modulo, with + * 64bit result and 32bit remainder. + * + * The fast case for (n>>32 == 0) is handled inline by do_div(). + * + * Code generated for this function might be very inefficient + * for some CPUs. __div64_32() can be overridden by linking arch-specific + * assembly versions such as arch/ppc/lib/div64.S and arch/sh/lib/div64.S. + */ + +#include + +uint32_t __div64_32(uint64_t *n, uint32_t base) +{ + uint64_t rem = *n; + uint64_t b = base; + uint64_t res, d = 1; + uint32_t high = rem >> 32; + + /* Reduce the thing a bit first */ + res = 0; + if (high >= base) { + high /= base; + res = (uint64_t) high << 32; + rem -= (uint64_t) (high*base) << 32; + } + + while ((int64_t)b > 0 && b < rem) { + b = b+b; + d = d+d; + } + + do { + if (rem >= b) { + rem -= b; + res += d; + } + b >>= 1; + d >>= 1; + } while (d); + + *n = res; + return rem; +} -- cgit