linux-stable/arch/x86/um/shared/sysdep
Eli Cooper a78ff11122 um: add extended processor state save/restore support
This patch extends save_fp_registers() and restore_fp_registers() to use
PTRACE_GETREGSET and PTRACE_SETREGSET with the XSTATE note type, adding
support for new processor state extensions between context switches.

When the new ptrace requests are unavailable, it falls back to the old
PTRACE_GETFPREGS and PTRACE_SETFPREGS methods, which have been renamed to
save_i387_registers() and restore_i387_registers().

Now these functions expect *fp_regs to have the space of an _xstate struct.
Thus, this also makes ptrace in UML responde to PTRACE_GETFPREGS/_SETFPREG
requests with a user_i387_struct (thus independent from HOST_FP_SIZE), and
by calling save_i387_registers() and restore_i387_registers() instead of
the extended save_fp_registers() and restore_fp_registers() functions.

Signed-off-by: Eli Cooper <elicooper@gmx.com>
2016-05-21 23:38:06 +02:00
..
archsetjmp.h
archsetjmp_32.h
archsetjmp_64.h
faultinfo.h
faultinfo_32.h um: Remove SKAS3/4 support 2015-04-13 21:00:53 +02:00
faultinfo_64.h um: Remove SKAS3/4 support 2015-04-13 21:00:53 +02:00
kernel-offsets.h
mcontext.h
ptrace.h
ptrace_32.h
ptrace_64.h um: add extended processor state save/restore support 2016-05-21 23:38:06 +02:00
ptrace_user.h
stub.h
stub_32.h
stub_64.h
syscalls.h
syscalls_32.h
syscalls_64.h
tls.h um: Stop abusing __KERNEL__ 2015-05-31 22:05:32 +02:00