HelenOS sources

FPSR_CTRL_PC_EXTENDED   87 kernel/arch/ia64/include/arch/register.h #define FPSR_CTRL_PC_EXTENDED   (3 << 2)
FPSR_CTRL_PC_EXTENDED   87 uspace/lib/c/arch/ia64/include/libarch/register.h #define FPSR_CTRL_PC_EXTENDED   (3 << 2)
HelenOS homepage, sources at GitHub