PATCH: remaining powerpc BP mods

[Greg McGary]

Greg McGary <greg@mcgary.org> writes:

> No build-shared or build-static regressions.
> No binary differences anticipated for non-BP (comparison build in progress).

I finally got my PPC box going again, and no there were no binary
differences.

These mods are already approved by Uli.

> 2000-07-12  Greg McGary  <greg@mcgary.org>
> 
> 	* sysdeps/powerpc/bp-asm.h (DISCARD_BOUNDS): Rename from UNCHECK_BOUNDS.
> 	* sysdeps/powerpc/bits/setjmp.h (JB_SIZE): New constant.
> 	* sysdeps/powerpc/elf/libc-start.c (__libc_start_main):
> 	Wrap bounds around argv & envp and each of their string members.
> 	* sysdeps/powerpc/elf/start.S: Designate BP symbols.
> 	* sysdeps/unix/sysv/linux/powerpc/brk.S: Wrap entry-point
> 	symbol in BP_SYM ().  Discard bounds of address arg.
> 	* sysdeps/unix/sysv/linux/powerpc/clone.S: Likewise.
> 	* sysdeps/unix/sysv/linux/powerpc/mmap64.c (__mmap64):
> 	Discard bounds on address arg, add bounds to return value.