_Unwind_GetGR -- private C++ error handling method


_Unwind_Word _Unwind_GetGR(struct _Unwind_Context * context, int index);


_Unwind_GetGR() returns data at index found in context. The register is identified by its index: 0 to 31 are for the fixed registers, and 32 to 127 are for the stacked registers.

During the two phases of unwinding, only GR1 has a guaranteed value, which is the global pointer of the frame referenced by the unwind context. If the register has its NAT bit set, the behavior is unspecified.