== Mon, Nov 05, 2007 at 02:55:45PM +0100, maximilian attems ==
[]
> titan:~# strace -vfF /usr/lib/klibc/bin/fstype
> execve("/usr/lib/klibc/bin/fstype", ["/usr/lib/klibc/bin/fstype"],
> ["SHELL=/bin/bash", "TERM=xterm", "SSH_CLIENT=[myip] 39403"...,
> "SSH_TTY=/dev/pts/0", "USER=root",
> "LS_COLORS=no=00:fi=00:di=01;34:l"...,
> "PATH=/usr/local/sbin:/usr/local/"..., "MAIL=/var/mail/root",
> "PWD=/root", "LANG=en_US.UTF-8", "PS1=\\h:\\w\\$ ", "HOME=/root",
> "SHLVL=2", "LS_OPTIONS=--color=auto", "LOGNAME=root",
> "SSH_CONNECTION=[myip] 3"..., "_=/usr/bin/strace", "OLDPWD=/"]) = 0
> --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> +++ killed by SIGSEGV +++
gdb doesn't work/help?
[]
> +++ b/usr/klibc/libgcc/__clzdi2.c
> @@ -0,0 +1,23 @@
> +/*
> + * __clzdi2 - Returns the leading number of 0 bits in the argument
> + */
> +
> +#include <stdint.h>
> +#include <stddef.h>
> +
> +uint64_t __clzdi2(uint64_t v)
> +{
> + uint32_t vhi = (uint32_t) (v >> 32);
`v' is a data in memory loaded to register to perform shift, thus this
operation yields high 32-bits part of `v'
> + uint32_t vx;
> + int dp;
> +
> + if (vhi) {
> + vx = vhi;
> + dp = 0;
> + } else {
> + vx = (uint32_t) v;
`v' is a data in memory, accessed with 32-bits cast, thus operation
yields high 32-bits part of `v'.
> + dp = 32;
> + }
> +
> + return dp + __builtin_clz(vx);
> +}
While i didn't see/used any big-endian machine/asm_dump, i just
speculate, since noone replied yet.
____
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