On Wed, Jan 22, 2003 at 06:30:06PM +1100, Andrew Clausen wrote: > Hi all, > > I'm playing with Debian on an Origin 200 (aka ip27 - 64-bit mips). > The current setup in the mips64-linux world is 64bit kernel + > 32bit userland. So, a mips64-linux kernel can be mostly run a > mips32-linux userland out of the box. > > Unfortunately, this doesn't apply to strace, as this play with > the 64bit kernel's stack (eg: struct pt_regs), which is different in > mips32 and mips64. > > So, I guess the solution is to hack (it's ugly as hell already...) > strace to detect and understand the 64 bit stack from a 32 bit > userland? I don't think so. You should rather implement a sys32_ptrace and reference it in the 32bit syscall vector. Look at the version in arch/ia64/ia32/sys_ia32.c for an example.
