a78ff11122
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> |
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configs | ||
drivers | ||
include | ||
kernel | ||
os-Linux | ||
scripts | ||
.gitignore | ||
Kconfig.char | ||
Kconfig.common | ||
Kconfig.debug | ||
Kconfig.net | ||
Kconfig.rest | ||
Kconfig.um | ||
Makefile | ||
Makefile-os-Linux | ||
Makefile-skas |