getunwind(2) System Calls Manual getunwind(2) getunwind - (libc -lc) #include #include /* Definition of SYS_* constants */ #include [[deprecated]] long syscall(size_t buf_size; SYS_getunwind, void buf[buf_size], size_t buf_size); : . getunwind() IA-64 buf ( ). buf buf_size. buf_size buf NULL . . . : u64 start; (64-bit address of start of function) u64 end; (64-bit address of end of function) u64 info; (BUF-relative offset to unwind info) start . IA-64 Software Conventions and Runtime Architecture. getunwind() . -1 errno . getunwind() EFAULT buf. IA-64. 2.4. . vdso(7). getauxval(3) 3 . . : . 6.18 8 2026 getunwind(2)