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This updates glibc for the changes in the ELFv2 relating to the
stack frame layout. These are described in more detail here:
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01149.html
http://gcc.gnu.org/ml/gcc-patches/2013-11/msg01146.html
Specifically, the "compiler and linker doublewords" were removed,
which has the effect that the save slot for the TOC register is
now at offset 24 rather than 40 to the stack pointer.
In addition, a function may now no longer necessarily assume that
its caller has set up a 64-byte register save area its use.
To address the first change, the patch goes through all assembler
files and replaces immediate offsets in instructions accessing the
ABI-defined stack slots by symbolic offsets. Those already were
defined in ucontext_i.sym and used in some of the context routines,
but that doesn't really seem like the right place for those defines.
The patch instead defines those symbolic offsets in sysdeps.h,
in two variants for the old and new ABI, and uses them systematically
in all assembler files, not just the context routines.
The second change only affected a few assembler files that used
the save area to temporarily store some registers. In those
cases where this happens within a leaf function, this patch
changes the code to store those registers to the "red zone"
below the stack pointer. Otherwise, the functions already allocate
a stack frame, and the patch changes them to add extra space in
these frames as temporary space for the ELFv2 ABI.
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2006-01-03 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/generic/sysdep.h (cfi_same_value): Define macro.
* sysdeps/powerpc/powerpc32/dl-trampoline.S (_dl_runtime_resolve,
_dl_profile_resolve): Add CFI directives for stack and LR save.
Save LR in LRSAVE of previous frame per ABI.
* sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Add CFI directives
for LR save.
* sysdeps/powerpc/powerpc32/lshift.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S
(__makecontext, __novec_makecontext): Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_ceil.S: Add CFI directive
for LR save to register.
* sysdeps/powerpc/powerpc32/fpu/s_ceilf.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_floor.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_floorf.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_rint.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_rintf.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_round.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_roundf.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_trunc.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_truncf.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Add CFI directive
for stack.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
* sysdeps/powerpc/powerpc32/ppc-mcount.S: Add CFI directives for stack
and LR save.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/brk.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext-common.S:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext-common.S:
Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S:
Likewise.
* sysdeps/powerpc/powerpc32/fpu/s_lround.S: Likewise. Don't use
negative stack addressing.
* sysdeps/powerpc/powerpc64/dl-trampoline.S (_dl_runtime_resolve,
_dl_profile_resolve): Add CFI directives for stack and LR save.
* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: Add CFI directives
for stack.
* sysdeps/powerpc/powerpc64/ppc-mcount.S (_mcount): Add CFI
directives for stack and LR save.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S (__brk): Add CFI
directives for stack.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone): Add CFI
directives for stack.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S
(__getcontext, __novec_getcontext): Add CFI directives for stack
and LR save.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S
(__makecontext): Add CFI directives for stack and LR save.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S
(__setcontext, __novec_setcontext): Add CFI directives for stack
and LR save.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S
(__swapcontext, __novec_swapcontext): Add CFI directives for stack
and LR save.
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2004-10-06 Alan Modra <amodra@bigpond.net.au>
* sysdeps/powerpc/powerpc64/ppc-mcount.S (PROF): Don't undef.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S: Invoke CALL_MOUNT.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/socket.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
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* sysdeps/posix/getaddrinfo.c (gaih_inet): Set no_inet6_date alse
if only PF_INET address is needed.
* nss/getXXbyYY_r.c: Make sure we always return a nonzero value in
case of an error.
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Ported to PowerPC64 running Linux.
* sysdeps/powerpc/powerpc64/Dist: New file.
* sysdeps/powerpc/powerpc64/Implies: New file.
* sysdeps/powerpc/powerpc64/Makefile: New file.
* sysdeps/powerpc/powerpc64/__longjmp.S: New file.
* sysdeps/powerpc/powerpc64/atomicity.h: New file.
* sysdeps/powerpc/powerpc64/backtrace.c: New file.
* sysdeps/powerpc/powerpc64/bp-asm.h: New file.
* sysdeps/powerpc/powerpc64/bsd-_setjmp.S: New file.
* sysdeps/powerpc/powerpc64/bsd-setjmp.S: New file.
* sysdeps/powerpc/powerpc64/dl-dtprocnum.h: New file.
* sysdeps/powerpc/powerpc64/dl-lookupcfg.h: New file.
* sysdeps/powerpc/powerpc64/dl-machine.c: New file.
* sysdeps/powerpc/powerpc64/dl-machine.h: New file.
* sysdeps/powerpc/powerpc64/memset.S: New file.
* sysdeps/powerpc/powerpc64/ppc-mcount.S: New file.
* sysdeps/powerpc/powerpc64/register-dump.h: New file.
* sysdeps/powerpc/powerpc64/setjmp.S: New file.
* sysdeps/powerpc/powerpc64/stpcpy.S: New file.
* sysdeps/powerpc/powerpc64/strchr.S: New file.
* sysdeps/powerpc/powerpc64/strcmp.S: New file.
* sysdeps/powerpc/powerpc64/strcpy.S: New file.
* sysdeps/powerpc/powerpc64/strlen.S: New file.
* sysdeps/powerpc/powerpc64/elf/bzero.S: New file.
* sysdeps/powerpc/powerpc64/elf/start.S: New file.
* sysdeps/powerpc/powerpc64/fpu/s_copysign.S: New file.
* sysdeps/powerpc/powerpc64/fpu/s_copysignf.S: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/Versions: New File.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/brk.S: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/glob64.c: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/socket.S: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/syscalls.list: New file.
* sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: New file.
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