libunwind documentation

For instructions on how to build libunwind, see the README file in the libunwind source tree. Some notes illustrating the use of libunwind can be found in the file doc/NOTES.

Manual Pages

• libunwind(3) - overview of the libunwind API
• libunwind-ia64(3) - IA-64-specifics
• libunwind-ptrace(3) - ptrace(2) support for libunwind
• libunwind-setjmp(3) - turbo-setjmp()
• unw_create_addr_space(3) - create address space
• unw_destroy_addr_space(3) - destroy address space
• unw_flush_cache(3) - flush cached info
• unw_get_accessors(3) - get pointer to accessor call-backs
• unw_get_fpreg() - read floating-point register
• unw_get_proc_info(3) - get info on current procedure
• unw_get_proc_name(3) - get name of current procedure
• unw_get_reg() - read register
• unw_getcontext(3) - get current machine-state
• unw_init_local(3) - initialize cursor for local unwinding
• unw_init_remote(3) - initialize cursor for remote unwinding
• unw_is_fpreg() - check whether floating-point register
• unw_is_signal_frame() - check whether signal frame
• unw_regname(3) - get register name
• unw_resume(3) - resume execution in a stack frame
• unw_set_caching_policy(3) - set caching policy
• unw_set_fpreg() - write floating-point register
• unw_set_reg() - write register
• unw_step() - step to next (older) frame

Related Documentation

C++ Exception ABI

This was originally defined specifically for Itanium, but in the meantime it's being used pretty much for all other platforms, too.

C++ Exception ABI Extensions

These extensions were defined by H.J. Lu with help from the GCC and Intel compiler teams to plug some holes which were not covered by the original C++ ABI spec and caused some compatibility problems.

IA-64 (Itanium) unwind conventions

See Chapter 11, ``Stack Unwinding and Exception Handling'' and Appendix B, ``Unwind Descriptor Record Format''.

DWARF-2/3 unwind conventions

See Section 6.4. Caveat: GCC uses an extended version of what is being documented here. Some of it has been documented as part of the Linux Standards Base, but much of it is currently ``documented'' in the form of source code, only.