Add setjmp/longjmp functions for x86_64. The FPU control word and MXCSR control bits are preserved across calls.

v2: Added the FPU control word and MXCSR to jmp_buf; Using ENTRY/ENDPROC macros.

Ivan Gorinov (1): x86: Add 64-bit setjmp/longjmp implementation

arch/x86/cpu/x86_64/setjmp.S | 66 +++++++++++++++++++++++++++++++++++++++++++ arch/x86/cpu/x86_64/setjmp.c | 19 ------------- arch/x86/include/asm/setjmp.h | 19 +++++++++++++ 3 files changed, 85 insertions(+), 19 deletions(-) create mode 100644 arch/x86/cpu/x86_64/setjmp.S delete mode 100644 arch/x86/cpu/x86_64/setjmp.c