linux-toradex.git/include/asm-powerpc/elf.h, branch v2.6.24.2

increase AT_VECTOR_SIZE to terminate saved_auxv properly

2007-10-17T15:43:00+00:00

include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO.  fs/binfmt_elf.c
has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT
entries.  So in the worst case, saved_auxv does not get an AT_NULL entry at
the end.

The saved_auxv array must be terminated with an AT_NULL entry.  Make the
size of mm_struct->saved_auxv arch dependend, based on the number of
ARCH_DLINFO entries.

Signed-off-by: Olaf Hering 
Cc: Roland McGrath 
Cc: Jakub Jelinek 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: "Luck, Tony" 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Paul Mundt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: Use linux/elfcore-compat.h

2007-10-17T15:42:51+00:00

This makes powerpc64's compat code use the new linux/elfcore-compat.h,
reducing some hand-copied duplication.

Signed-off-by: Roland McGrath 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Andi Kleen 
Cc: "Luck, Tony" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc: add Altivec/VMX state to coredumps

2007-10-17T15:42:44+00:00

Update dump_task_altivec() (which has so far never been put to use) so that
it dumps the Altivec/VMX registers (VR[0] - VR[31], VSCR and VRSAVE) in the
same format as the ptrace get_vrregs(), and add the appropriate glue
typedef and #defines to make it work.

A new note type of NT_PPC_VMX was chosen to be 0x100 (arbitrarily) because
it allows the low range values to be used for more generic purposes and
0x100 seems an adequate starting point for PowerPC extensions.

Signed-off-by: Mark Nelson 
Signed-off-by: Paul Mackerras 
Cc: Thomas Gleixner 
Cc: Ingo Molnar 
Cc: Andi Kleen 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] spufs: Cleanup ELF coredump extra notes logic

2007-09-19T05:12:19+00:00

To start with, arch_notes_size() etc. is a little too ambiguous a name for
my liking, so change the function names to be more explicit.

Calling through macros is ugly, especially with hidden parameters, so don't
do that, call the routines directly.

Use ARCH_HAVE_EXTRA_ELF_NOTES as the only flag, and based on it decide
whether we want the extern declarations or the empty versions.

Since we have empty routines, actually use them in the coredump code to
save a few #ifdefs.

We want to change the handling of foffset so that the write routine updates
foffset as it goes, instead of using file->f_pos (so that writing to a pipe
works).  So pass foffset to the write routine, and for now just set it to
file->f_pos at the end of writing.

It should also be possible for the write routine to fail, so change it to
return int and treat a non-zero return as failure.

Signed-off-by: Michael Ellerman 
Signed-off-by: Jeremy Kerr 
Signed-off-by: Paul Mackerras

[POWERPC] Move ELF_ET_DYN_BASE up to 512MB point

2007-01-24T10:13:56+00:00

I often test new versions of glibc by doing:

LD_LIBRARY_PATH=/XXX/lib /XXX/lib/ld.so.1 

One test case ended up SEGV'ing. Upon closer inspection ld.so was loaded
at 0x8000000 (128MB) with the heap right after it. Since we normally
link binaries at 0x10000000 (256MB) we only had about 128MB of space for
the heap:

00100000-00103000 r-xp 00100000 00:00 0           [vdso]
08000000-0801e000 r-xp 00000000 00:01 33079       /lib/ld-2.5.so
0802d000-0802f000 rwxp 0001d000 00:01 33079       /lib/ld-2.5.so
0802f000-08050000 rwxp 0802f000 00:00 0           [heap]
0fe91000-0ffd9000 r-xp 00000000 00:01 33082       /lib/libc-2.5.so
0ffd9000-0ffe8000 ---p 00148000 00:01 33082       /lib/libc-2.5.so
0ffe8000-0ffea000 r--p 00147000 00:01 33082       /lib/libc-2.5.so
0ffea000-0ffed000 rwxp 00149000 00:01 33082       /lib/libc-2.5.so
10000000-10004000 r-xp 00000000 00:01 76          /bin/sleep
10013000-10014000 rwxp 00003000 00:01 76          /bin/sleep
ffb41000-ffb56000 rw-p ffb41000 00:00 0           [stack]

One way to fix this is move ELF_ET_DYN_BASE from 0x08000000 to 0x20000000.
This allows 128MB for the binary (hopefully enough for even the most
crazy c++ apps), and with our current layout we will grow the heap up
and the stack down, allowing potentially gigabytes of heap:

00100000-00103000 r-xp 00100000 00:00 0           [vdso]
0fe8a000-0ffd3000 r-xp 00000000 00:01 3350        /lib/tls/libc-2.3.6.so
0ffd3000-0ffe3000 ---p 00149000 00:01 3350        /lib/tls/libc-2.3.6.so
0ffe3000-0ffea000 r--p 00149000 00:01 3350        /lib/tls/libc-2.3.6.so
0ffea000-0ffee000 rwxp 00150000 00:01 3350        /lib/tls/libc-2.3.6.so
10000000-10004000 r-xp 00000000 00:01 76          /bin/sleep
10013000-10014000 rwxp 00003000 00:01 76          /bin/sleep
20000000-20018000 r-xp 00000000 00:01 3478        /lib/ld-2.3.6.so
20028000-20029000 r--p 00018000 00:01 3478        /lib/ld-2.3.6.so
20029000-2002a000 rwxp 00019000 00:01 3478        /lib/ld-2.3.6.so
2002a000-2004b000 rwxp 2002a000 00:00 0           [heap]
ffd67000-ffd7c000 rw-p ffd67000 00:00 0           [stack]

Signed-off-by: Anton Blanchard 
Signed-off-by: Paul Mackerras

[PATCH] elf: Always define elf_addr_t in linux/elf.h

2006-12-07T16:39:38+00:00

Define elf_addr_t in linux/elf.h.  The size of the type is determined using
ELF_CLASS.  This allows us to remove the defines that today are spread all
over .c and .h files.

Signed-off-by: Magnus Damm 
Cc: Daniel Jacobowitz 
Cc: Roland McGrath 
Cc: Jakub Jelinek 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[POWERPC] cell: fix building without spufs

2006-12-04T09:41:12+00:00

It may be desireable to build a kernel for cell without
spufs, e.g. as the initial kboot kernel. This requires
that the SPU specific parts of the core dump and the xmon
code depend on CONFIG_SPU_BASE instead of CONFIG_PPC_CELL.

Signed-off-by: Arnd Bergmann

[POWERPC] coredump: Add SPU elf notes to coredump.

2006-12-04T09:40:19+00:00

This patch adds SPU elf notes to the coredump. It creates a separate note
for each of /regs, /fpcr, /lslr, /decr, /decr_status, /mem, /signal1,
/signal1_type, /signal2, /signal2_type, /event_mask, /event_status,
/mbox_info, /ibox_info, /wbox_info, /dma_info, /proxydma_info, /object-id.

A new macro, ARCH_HAVE_EXTRA_NOTES, was created for architectures to
specify they have extra elf core notes.

A new macro, ELF_CORE_EXTRA_NOTES_SIZE, was created so the size of the
additional notes could be calculated and added to the notes phdr entry.

A new macro, ELF_CORE_WRITE_EXTRA_NOTES, was created so the new notes
would be written after the existing notes.

The SPU coredump code resides in spufs. Stub functions are provided in the
kernel which are hooked into the spufs code which does the actual work via
register_arch_coredump_calls().

A new set of __spufs__read/get() functions was provided to allow the
coredump code to read from the spufs files without having to lock the
SPU context for each file read from.

Cc: 
Signed-off-by: Dwayne Grant McConnell 
Signed-off-by: Arnd Bergmann

Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

2006-06-23T05:11:30+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (139 commits)
  [POWERPC] re-enable OProfile for iSeries, using timer interrupt
  [POWERPC] support ibm,extended-*-frequency properties
  [POWERPC] Extra sanity check in EEH code
  [POWERPC] Dont look for class-code in pci children
  [POWERPC] Fix mdelay badness on shared processor partitions
  [POWERPC] disable floating point exceptions for init
  [POWERPC] Unify ppc syscall tables
  [POWERPC] mpic: add support for serial mode interrupts
  [POWERPC] pseries: Print PCI slot location code on failure
  [POWERPC] spufs: one more fix for 64k pages
  [POWERPC] spufs: fail spu_create with invalid flags
  [POWERPC] spufs: clear class2 interrupt status before wakeup
  [POWERPC] spufs: fix Makefile for "make clean"
  [POWERPC] spufs: remove stop_code from struct spu
  [POWERPC] spufs: fix spu irq affinity setting
  [POWERPC] spufs: further abstract priv1 register access
  [POWERPC] spufs: split the Cell BE support into generic and platform dependant parts
  [POWERPC] spufs: dont try to access SPE channel 1 count
  [POWERPC] spufs: use kzalloc in create_spu
  [POWERPC] spufs: fix initial state of wbox file
  ...

Manually resolved conflicts in:
	drivers/net/phy/Makefile
	include/asm-powerpc/spu.h

[PATCH] powerpc vdso updates

2006-06-09T11:20:57+00:00

This patch cleans up some locking & error handling in the ppc vdso and
moves the vdso base pointer from the thread struct to the mm context
where it more logically belongs. It brings the powerpc implementation
closer to Ingo's new x86 one and also adds an arch_vma_name() function
allowing to print [vsdo] in /proc//maps if Ingo's x86 vdso patch is
also applied.

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Paul Mackerras