mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-12-23 03:53:43 +01:00
441adc46ff
This adds a port to Linux on the IBM Z platform (a.k.a s390x). It only supports the 64-bit ABI. Most functionality is working and all the tests pass with the exception of the coredump tests*. Unwinding is only supported if DWARF unwind information is present. libunwind can't currently make use of the backchain (if present). The getcontext/setcontext functions only preserve/restore a subset of registers. Currently this only consists of callee-saved registers and some parameter registers. Vector registers and access registers are not saved (and aren't callee- saved) by getcontext and cannot currently be modified. They will however be restored unmodified after resuming a context from a signal handler. There is no special libunwind support for setjmp, the functionality is emulated using glibc (I think all the ports do this for modern Linux kernels). * Unwinding on s390x requires floating point register access which the coredump library doesn't currently support.
382 lines
9.8 KiB
Bash
382 lines
9.8 KiB
Bash
#!/bin/sh
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verbose=false
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if [ "$1" = "-v" ]; then
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verbose=true
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shift
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fi
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build_plat=@build_arch@
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plat=@arch@
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os=@target_os@
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num_errors=0
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LIBUNWIND=../src/.libs/libunwind.so
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LIBUNWIND_GENERIC=../src/.libs/libunwind-${plat}.so
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fetch_symtab () {
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filename=$1
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if [ ! -r $filename ]; then
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return
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fi
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if $verbose; then
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echo "Checking $filename..."
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fi
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#
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# Unfortunately, "nm --defined" is a GNU-extension. For portability,
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# build the list of defined symbols by hand.
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#
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symtab=`nm -g $filename`
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saved_IFS="$IFS"
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IFS=""
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undef=`nm -g -u $filename`
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for line in $undef; do
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symtab=`echo "$symtab" | grep -v "^${line}"\$`
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done;
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IFS="$saved_IFS"
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}
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ignore () {
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sym=$1
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symtab=`echo "$symtab" | grep -v " ${sym}\$"`
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}
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match () {
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sym=$1
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if `echo "$symtab" | grep -q " ${sym}\$"`; then
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symtab=`echo "$symtab" | grep -v " ${sym}\$"`
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else
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echo " ERROR: Symbol \"$sym\" missing."
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num_errors=`expr $num_errors + 1`
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fi
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}
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#
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# Filter out miscellaneous symbols that get defined by the
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# linker for each shared object.
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#
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filter_misc () {
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ignore _DYNAMIC
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ignore _GLOBAL_OFFSET_TABLE_
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ignore __bss_start
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ignore _edata
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ignore _end
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ignore _Uelf32_get_proc_name
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ignore _Uelf32_valid_object
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ignore _Uelf64_get_proc_name
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ignore _Uelf64_valid_object
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ignore _U.*debug_level
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ignore ICRT.INTERNAL # ICC 8.x defines this
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# Ignore symbols generated by the ARM Linux default linker script.
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# For details see the binutils sources (src/ld/emulparams/armelf_linux.sh).
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if [ ${plat} = "arm" ]; then
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ignore __bss_start__
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ignore __bss_end__
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ignore __end__
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ignore _bss_end__
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fi
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if [ ${plat} = "mips" ]; then
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ignore _fbss
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ignore _fdata
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ignore _ftext
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ignore _gp
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fi
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}
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check_local_unw_abi () {
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match _UL${plat}_apply_reg_state
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match _UL${plat}_reg_states_iterate
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match _UL${plat}_create_addr_space
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match _UL${plat}_destroy_addr_space
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match _UL${plat}_get_fpreg
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match _UL${plat}_get_proc_info
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match _UL${plat}_get_proc_info_by_ip
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match _UL${plat}_get_proc_name
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match _UL${plat}_get_reg
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match _UL${plat}_get_save_loc
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match _UL${plat}_init_local
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match _UL${plat}_init_local2
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match _UL${plat}_init_remote
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match _UL${plat}_is_signal_frame
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match _UL${plat}_local_addr_space
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match _UL${plat}_resume
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match _UL${plat}_set_caching_policy
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match _UL${plat}_set_cache_size
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match _UL${plat}_set_reg
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match _UL${plat}_set_fpreg
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match _UL${plat}_step
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match _U${plat}_flush_cache
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match _U${plat}_get_accessors
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match _U${plat}_getcontext
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match _U${plat}_regname
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match _U${plat}_strerror
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match _U_dyn_cancel
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match _U_dyn_info_list_addr
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match _U_dyn_register
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match unw_backtrace
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match backtrace
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case ${plat} in
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arm)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _UL${plat}_search_unwind_table
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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;;
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hppa)
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_setcontext
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;;
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ia64)
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match _UL${plat}_search_unwind_table
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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;;
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x86)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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;;
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x86_64)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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match _U${plat}_setcontext
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;;
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ppc*)
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match _U${plat}_get_func_addr
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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;;
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tilegx)
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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match _UL${plat}_local_addr_space_init
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match ${plat}_lock
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;;
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s390x)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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match _U${plat}_setcontext
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;;
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*)
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match _U${plat}_is_fpreg
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match _UL${plat}_dwarf_search_unwind_table
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match _UL${plat}_dwarf_find_unwind_table
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;;
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esac
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if [ x@enable_debug_frame@ = xyes ]; then
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match _UL${plat}_dwarf_find_debug_frame
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fi
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}
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check_generic_unw_abi () {
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match _U${plat}_apply_reg_state
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match _U${plat}_reg_states_iterate
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match _U${plat}_create_addr_space
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match _U${plat}_destroy_addr_space
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match _U${plat}_flush_cache
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match _U${plat}_get_accessors
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match _U${plat}_get_fpreg
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match _U${plat}_get_proc_info
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match _U${plat}_get_proc_info_by_ip
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match _U${plat}_get_proc_name
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match _U${plat}_get_reg
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match _U${plat}_get_save_loc
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match _U${plat}_init_local
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match _U${plat}_init_local2
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match _U${plat}_init_remote
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match _U${plat}_is_signal_frame
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match _U${plat}_local_addr_space
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match _U${plat}_regname
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match _U${plat}_resume
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match _U${plat}_set_caching_policy
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match _U${plat}_set_cache_size
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match _U${plat}_set_fpreg
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match _U${plat}_set_reg
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match _U${plat}_step
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match _U${plat}_strerror
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case ${plat} in
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arm)
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match _U${plat}_is_fpreg
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_search_unwind_table
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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hppa)
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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;;
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ia64)
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match _U${plat}_search_unwind_table
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match _U${plat}_find_dyn_list
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if [ $plat = $build_plat ]; then
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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case $os in
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linux*)
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match _U${plat}_get_kernel_table
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;;
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esac
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fi
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;;
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x86)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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x86_64)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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ppc*)
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_get_func_addr
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match _U${plat}_is_fpreg
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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tilegx)
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_is_fpreg
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match _U${plat}_local_addr_space_init
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match ${plat}_lock
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;;
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s390x)
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match _U${plat}_is_fpreg
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match _U${plat}_get_elf_image
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match _U${plat}_get_exe_image_path
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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*)
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match _U${plat}_is_fpreg
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match _U${plat}_dwarf_search_unwind_table
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match _U${plat}_dwarf_find_unwind_table
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;;
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esac
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if [ x@enable_debug_frame@ = xyes ]; then
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match _U${plat}_dwarf_find_debug_frame
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fi
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}
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check_cxx_abi () {
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match _Unwind_Backtrace
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match _Unwind_DeleteException
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match _Unwind_FindEnclosingFunction
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match _Unwind_ForcedUnwind
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match _Unwind_GetBSP
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match _Unwind_GetCFA
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match _Unwind_GetDataRelBase
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match _Unwind_GetGR
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match _Unwind_GetIP
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match _Unwind_GetIPInfo
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match _Unwind_GetLanguageSpecificData
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match _Unwind_GetRegionStart
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match _Unwind_GetTextRelBase
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match _Unwind_RaiseException
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match _Unwind_Resume
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match _Unwind_Resume_or_Rethrow
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match _Unwind_SetGR
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match _Unwind_SetIP
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match __libunwind_Unwind_Backtrace
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match __libunwind_Unwind_DeleteException
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match __libunwind_Unwind_FindEnclosingFunction
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match __libunwind_Unwind_ForcedUnwind
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match __libunwind_Unwind_GetBSP
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match __libunwind_Unwind_GetCFA
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match __libunwind_Unwind_GetDataRelBase
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match __libunwind_Unwind_GetGR
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match __libunwind_Unwind_GetIP
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match __libunwind_Unwind_GetIPInfo
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match __libunwind_Unwind_GetLanguageSpecificData
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match __libunwind_Unwind_GetRegionStart
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match __libunwind_Unwind_GetTextRelBase
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match __libunwind_Unwind_RaiseException
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match __libunwind_Unwind_Resume
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match __libunwind_Unwind_Resume_or_Rethrow
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match __libunwind_Unwind_SetGR
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match __libunwind_Unwind_SetIP
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case $os in
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linux*)
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# needed only for Intel 8.0 bug-compatibility
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match _ReadSLEB
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match _ReadULEB
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;;
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esac
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}
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check_empty () {
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if [ -n "$symtab" ]; then
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printf " ERROR: Extraneous symbols:\n$symtab\n"
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num_errors=`expr $num_errors + 1`
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fi
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}
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if [ $plat = $build_plat ]; then
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fetch_symtab $LIBUNWIND
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filter_misc
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check_local_unw_abi
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if [ x@enable_cxx_exceptions@ = xyes ]; then
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check_cxx_abi
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fi
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check_empty
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fi
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fetch_symtab $LIBUNWIND_GENERIC
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filter_misc
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check_generic_unw_abi
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check_empty
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if [ $num_errors -gt 0 ]; then
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echo "FAILURE: Detected $num_errors errors"
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exit 1
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fi
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if $verbose; then
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echo " SUCCESS: all checks passed"
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fi
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exit 0
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