]> git.proxmox.com Git - mirror_ubuntu-disco-kernel.git/commit
m68k: Define sigcontext ABI of ColdFire
authorMaxim Kuvyrkov <maxim@codesourcery.com>
Tue, 22 Sep 2009 21:22:43 +0000 (01:22 +0400)
committerGeert Uytterhoeven <geert@linux-m68k.org>
Sat, 27 Feb 2010 17:44:10 +0000 (18:44 +0100)
commit00ebfe58b002f0ff387f60c7cd23bc2b274fce1a
tree2e88877140ddcb97cf2b5a01bbf0b3c443bf3ef9
parenta58f75349063f60949614de39390df594ba1418d
m68k: Define sigcontext ABI of ColdFire

The following patch defines sigcontext ABI of ColdFire.  Due to ISA
restrictions ColdFire needs different rt_sigreturn trampoline.

And due to ColdFire FP registers being 8-bytes instead of 12-bytes on
m68k, sigcontext and fpregset structures should be updated.

Regarding the sc_fpstate[16+6*8] field, it would've been enough 16
bytes to store ColdFire's FP state.  To accomodate GLIBC's libSegFault
it would'be been enough 6*8 bytes (room for the 6 non-call-clobbered
FP registers).  I set it to 16+6*8 to provide some extra space for any
future changes in the ColdFire FPU.

Signed-off-by: Maxim Kuvyrkov <maxim@codesourcery.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
arch/m68k/include/asm/sigcontext.h
arch/m68k/include/asm/ucontext.h
arch/m68k/kernel/signal.c