mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-23 18:14:13 +08:00
* arm.cc (Target_arm<big_endian>::gc_process_relocs): Add template
paramter to the call to gold::gc_process_relocs. * i386.cc (Target_i386<big_endian>::gc_process_relocs): Add template paramter to the call to gold::gc_process_relocs. * x86_64.cc (Target_x86_64<big_endian>::gc_process_relocs): Add template parameter to the call to gold::gc_process_relocs. * powerpc.cc (Target_powerpc<big_endian>::gc_process_relocs): Add template parameter to the call to gold::gc_process_relocs. * sparc.cc (Target_sparc<big_endian>::gc_process_relocs): Add template paramter to the call to gold::gc_process_relocs. * gc.h (get_embedded_addend_size): New function. (gc_process_relocs): Save the size of the reloc for use by ICF. * icf.cc (get_section_contents): Get the addend from the text section for SHT_REL relocation sections. * icf.h (Icf::Reloc_addend_size_info): New typedef. (Icf::Reloc_info): Add new member reloc_addend_size_info. * int_encoding.h (read_from_pointer): New overloaded function. * testsuite/Makefile.am (icf_sht_rel_addend_test): New test. * testsuite/icf_sht_rel_addend_test.sh: New file. * testsuite/icf_sht_rel_addend_test_1.cc: New file. * testsuite/icf_sht_rel_addend_test_2.cc: New file.
This commit is contained in:
Sriraman Tallam
parent
f9c7014e9c
commit
41cbeecc3c
@ -1,3 +1,27 @@
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2010-07-29 Sriraman Tallam <tmsriram@google.com>
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* arm.cc (Target_arm<big_endian>::gc_process_relocs): Add template
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paramter to the call to gold::gc_process_relocs.
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* i386.cc (Target_i386<big_endian>::gc_process_relocs): Add template
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paramter to the call to gold::gc_process_relocs.
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* x86_64.cc (Target_x86_64<big_endian>::gc_process_relocs): Add template
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parameter to the call to gold::gc_process_relocs.
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* powerpc.cc (Target_powerpc<big_endian>::gc_process_relocs): Add
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template parameter to the call to gold::gc_process_relocs.
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* sparc.cc (Target_sparc<big_endian>::gc_process_relocs): Add template
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paramter to the call to gold::gc_process_relocs.
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* gc.h (get_embedded_addend_size): New function.
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(gc_process_relocs): Save the size of the reloc for use by ICF.
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* icf.cc (get_section_contents): Get the addend from the text section
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for SHT_REL relocation sections.
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* icf.h (Icf::Reloc_addend_size_info): New typedef.
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(Icf::Reloc_info): Add new member reloc_addend_size_info.
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* int_encoding.h (read_from_pointer): New overloaded function.
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* testsuite/Makefile.am (icf_sht_rel_addend_test): New test.
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* testsuite/icf_sht_rel_addend_test.sh: New file.
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* testsuite/icf_sht_rel_addend_test_1.cc: New file.
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* testsuite/icf_sht_rel_addend_test_2.cc: New file.
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2010-07-28 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
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* configure.ac (AM_INIT_AUTOMAKE): Use parallel-tests option.
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@ -8213,7 +8213,8 @@ Target_arm<big_endian>::gc_process_relocs(Symbol_table* symtab,
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typedef Target_arm<big_endian> Arm;
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typedef typename Target_arm<big_endian>::Scan Scan;
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gold::gc_process_relocs<32, big_endian, Arm, elfcpp::SHT_REL, Scan>(
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gold::gc_process_relocs<32, big_endian, Arm, elfcpp::SHT_REL, Scan,
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Target_arm::Relocatable_size_for_reloc>(
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symtab,
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layout,
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this,
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24
gold/gc.h
24
gold/gc.h
@ -151,6 +151,20 @@ struct Symbols_data
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section_size_type symbol_names_size;
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};
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// Relocations of type SHT_REL store the addend value in their bytes.
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// This function returns the size of the embedded addend which is
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// nothing but the size of the relocation.
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template<typename Classify_reloc>
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inline unsigned int
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get_embedded_addend_size(int sh_type, int r_type, Relobj* obj)
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{
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if (sh_type != elfcpp::SHT_REL)
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return 0;
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Classify_reloc classify_reloc;
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return classify_reloc.get_size_for_reloc(r_type, obj);
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}
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// This function implements the generic part of reloc
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// processing to map a section to all the sections it
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// references through relocs. It is called only during
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@ -158,7 +172,7 @@ struct Symbols_data
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// folding (--icf).
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template<int size, bool big_endian, typename Target_type, int sh_type,
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typename Scan>
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typename Scan, typename Classify_reloc>
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inline void
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gc_process_relocs(
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Symbol_table* symtab,
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@ -185,6 +199,7 @@ gc_process_relocs(
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Icf::Symbol_info* symvec = NULL;
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Icf::Addend_info* addendvec = NULL;
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Icf::Offset_info* offsetvec = NULL;
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Icf::Reloc_addend_size_info* reloc_addend_size_vec = NULL;
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bool is_icf_tracked = false;
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const char* cident_section_name = NULL;
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@ -205,6 +220,7 @@ gc_process_relocs(
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symvec = &reloc_info->symbol_info;
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addendvec = &reloc_info->addend_info;
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offsetvec = &reloc_info->offset_info;
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reloc_addend_size_vec = &reloc_info->reloc_addend_size_info;
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}
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check_section_for_function_pointers =
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@ -243,6 +259,9 @@ gc_process_relocs(
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uint64_t reloc_offset =
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convert_to_section_size_type(reloc.get_r_offset());
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(*offsetvec).push_back(reloc_offset);
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(*reloc_addend_size_vec).push_back(
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get_embedded_addend_size<Classify_reloc>(sh_type, r_type,
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src_obj));
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}
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// When doing safe folding, check to see if this relocation is that
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@ -316,6 +335,9 @@ gc_process_relocs(
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uint64_t reloc_offset =
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convert_to_section_size_type(reloc.get_r_offset());
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(*offsetvec).push_back(reloc_offset);
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(*reloc_addend_size_vec).push_back(
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get_embedded_addend_size<Classify_reloc>(sh_type, r_type,
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src_obj));
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}
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if (gsym->source() != Symbol::FROM_OBJECT)
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@ -1624,7 +1624,8 @@ Target_i386::gc_process_relocs(Symbol_table* symtab,
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const unsigned char* plocal_symbols)
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{
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gold::gc_process_relocs<32, false, Target_i386, elfcpp::SHT_REL,
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Target_i386::Scan>(
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Target_i386::Scan,
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Target_i386::Relocatable_size_for_reloc>(
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symtab,
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layout,
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this,
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48
gold/icf.cc
48
gold/icf.cc
@ -145,6 +145,8 @@
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#include "symtab.h"
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#include "libiberty.h"
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#include "demangle.h"
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#include "elfcpp.h"
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#include "int_encoding.h"
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namespace gold
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{
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@ -269,12 +271,16 @@ get_section_contents(bool first_iteration,
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Icf::Addend_info a = (it_reloc_info_list->second).addend_info;
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// Stores the offset of the reloc.
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Icf::Offset_info o = (it_reloc_info_list->second).offset_info;
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Icf::Reloc_addend_size_info reloc_addend_size_info =
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(it_reloc_info_list->second).reloc_addend_size_info;
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Icf::Sections_reachable_info::iterator it_v = v.begin();
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Icf::Symbol_info::iterator it_s = s.begin();
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Icf::Addend_info::iterator it_a = a.begin();
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Icf::Offset_info::iterator it_o = o.begin();
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Icf::Reloc_addend_size_info::iterator it_addend_size =
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reloc_addend_size_info.begin();
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for (; it_v != v.end(); ++it_v, ++it_s, ++it_a, ++it_o)
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for (; it_v != v.end(); ++it_v, ++it_s, ++it_a, ++it_o, ++it_addend_size)
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{
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// ADDEND_STR stores the symbol value and addend and offset,
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// each atmost 16 hex digits long. it_a points to a pair
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@ -372,6 +378,46 @@ get_section_contents(bool first_iteration,
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if (addend < 0xffffff00)
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offset = offset + addend;
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// For SHT_REL relocation sections, the addend is stored in the
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// text section at the relocation offset.
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uint64_t reloc_addend_value = 0;
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const unsigned char* reloc_addend_ptr =
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contents + static_cast<unsigned long long>(*it_o);
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switch(*it_addend_size)
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{
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case 0:
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{
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break;
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}
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case 1:
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{
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reloc_addend_value =
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read_from_pointer<8>(reloc_addend_ptr);
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break;
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}
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case 2:
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{
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reloc_addend_value =
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read_from_pointer<16>(reloc_addend_ptr);
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break;
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}
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case 4:
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{
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reloc_addend_value =
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read_from_pointer<32>(reloc_addend_ptr);
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break;
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}
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case 8:
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{
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reloc_addend_value =
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read_from_pointer<64>(reloc_addend_ptr);
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break;
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}
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default:
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gold_unreachable();
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}
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offset = offset + reloc_addend_value;
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section_size_type secn_len;
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const unsigned char* str_contents =
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(it_v->first)->section_contents(it_v->second,
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@ -43,6 +43,7 @@ class Icf
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typedef std::vector<Symbol*> Symbol_info;
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typedef std::vector<std::pair<long long, long long> > Addend_info;
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typedef std::vector<uint64_t> Offset_info;
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typedef std::vector<unsigned int> Reloc_addend_size_info;
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typedef Unordered_map<Section_id,
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unsigned int,
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Section_id_hash> Uniq_secn_id_map;
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@ -57,6 +58,7 @@ class Icf
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// This stores the symbol value and the addend for a reloc.
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Addend_info addend_info;
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Offset_info offset_info;
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Reloc_addend_size_info reloc_addend_size_info;
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} Reloc_info;
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typedef Unordered_map<Section_id, Reloc_info,
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@ -77,6 +77,20 @@ void insert_into_vector(std::vector<unsigned char>* destination,
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destination->insert(destination->end(), buffer, buffer + valsize / 8);
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}
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// Read a possibly unaligned integer of SIZE from SOURCE.
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template <int valsize>
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typename elfcpp::Valtype_base<valsize>::Valtype
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read_from_pointer(const unsigned char* source)
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{
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typename elfcpp::Valtype_base<valsize>::Valtype return_value;
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if (parameters->target().is_big_endian())
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return_value = elfcpp::Swap_unaligned<valsize, true>::readval(source);
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else
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return_value = elfcpp::Swap_unaligned<valsize, false>::readval(source);
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return return_value;
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}
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// Read a possibly unaligned integer of SIZE. Update SOURCE after read.
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template <int valsize>
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@ -1493,7 +1493,8 @@ Target_powerpc<size, big_endian>::gc_process_relocs(
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typedef Target_powerpc<size, big_endian> Powerpc;
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typedef typename Target_powerpc<size, big_endian>::Scan Scan;
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gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan>(
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gold::gc_process_relocs<size, big_endian, Powerpc, elfcpp::SHT_RELA, Scan,
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Target_powerpc::Relocatable_size_for_reloc>(
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symtab,
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layout,
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this,
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@ -2330,7 +2330,8 @@ Target_sparc<size, big_endian>::gc_process_relocs(
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typedef Target_sparc<size, big_endian> Sparc;
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typedef typename Target_sparc<size, big_endian>::Scan Scan;
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gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan>(
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gold::gc_process_relocs<size, big_endian, Sparc, elfcpp::SHT_RELA, Scan,
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Target_sparc::Relocatable_size_for_reloc>(
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symtab,
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layout,
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this,
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@ -232,6 +232,18 @@ icf_string_merge_test: icf_string_merge_test.o gcctestdir/ld
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icf_string_merge_test.stdout: icf_string_merge_test
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$(TEST_NM) icf_string_merge_test > icf_string_merge_test.stdout
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check_SCRIPTS += icf_sht_rel_addend_test.sh
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check_DATA += icf_sht_rel_addend_test.stdout
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MOSTLYCLEANFILES += icf_sht_rel_addend_test
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icf_sht_rel_addend_test_1.o: icf_sht_rel_addend_test_1.cc
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$(CXXCOMPILE) -O0 -c -ffunction-sections -fPIC -g -o $@ $<
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icf_sht_rel_addend_test_2.o: icf_sht_rel_addend_test_2.cc
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$(CXXCOMPILE) -O0 -c -ffunction-sections -fPIC -g -o $@ $<
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icf_sht_rel_addend_test: icf_sht_rel_addend_test_1.o icf_sht_rel_addend_test_2.o gcctestdir/ld
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$(CXXLINK) -Bgcctestdir/ -Wl,--icf=all icf_sht_rel_addend_test_1.o icf_sht_rel_addend_test_2.o
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icf_sht_rel_addend_test.stdout: icf_sht_rel_addend_test
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$(TEST_NM) icf_sht_rel_addend_test > icf_sht_rel_addend_test.stdout
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check_PROGRAMS += basic_test
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check_PROGRAMS += basic_static_test
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check_PROGRAMS += basic_pic_test
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@ -65,6 +65,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ final_layout.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_preemptible_functions_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_string_merge_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_sht_rel_addend_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ two_file_shared.sh weak_plt.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg.sh undef_symbol.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_test_1.sh ver_test_2.sh \
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@ -98,6 +99,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ final_layout.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_preemptible_functions_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_string_merge_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_sht_rel_addend_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ two_file_shared.dbg \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_plt_shared.so debug_msg.err \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ debug_msg_so.err \
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@ -124,6 +126,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_virtual_function_folding_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_preemptible_functions_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_string_merge_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_sht_rel_addend_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ two_file_shared.dbg \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/weak_undef_lib.so
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@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_4 = icf_virtual_function_folding_test \
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@ -2589,6 +2592,8 @@ icf_preemptible_functions_test.sh.log: icf_preemptible_functions_test.sh
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@p='icf_preemptible_functions_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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icf_string_merge_test.sh.log: icf_string_merge_test.sh
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@p='icf_string_merge_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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icf_sht_rel_addend_test.sh.log: icf_sht_rel_addend_test.sh
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@p='icf_sht_rel_addend_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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two_file_shared.sh.log: two_file_shared.sh
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@p='two_file_shared.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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weak_plt.sh.log: weak_plt.sh
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@ -3090,6 +3095,14 @@ uninstall-am:
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -Wl,--icf=all icf_string_merge_test.o
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_string_merge_test.stdout: icf_string_merge_test
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_NM) icf_string_merge_test > icf_string_merge_test.stdout
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_sht_rel_addend_test_1.o: icf_sht_rel_addend_test_1.cc
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -O0 -c -ffunction-sections -fPIC -g -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_sht_rel_addend_test_2.o: icf_sht_rel_addend_test_2.cc
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -O0 -c -ffunction-sections -fPIC -g -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_sht_rel_addend_test: icf_sht_rel_addend_test_1.o icf_sht_rel_addend_test_2.o gcctestdir/ld
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -Wl,--icf=all icf_sht_rel_addend_test_1.o icf_sht_rel_addend_test_2.o
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_sht_rel_addend_test.stdout: icf_sht_rel_addend_test
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_NM) icf_sht_rel_addend_test > icf_sht_rel_addend_test.stdout
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@GCC_TRUE@@NATIVE_LINKER_TRUE@basic_test.o: basic_test.cc
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -O0 -c -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@basic_test: basic_test.o gcctestdir/ld
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35
gold/testsuite/icf_sht_rel_addend_test.sh
Executable file
35
gold/testsuite/icf_sht_rel_addend_test.sh
Executable file
@ -0,0 +1,35 @@
|
||||
# icf_sht_rel_addend_test.sh -- test --icf=all
|
||||
|
||||
# Copyright 2010 Free Software Foundation, Inc.
|
||||
# Written by Sriraman Tallam <tmsriram@google.com>.
|
||||
|
||||
# This file is part of gold.
|
||||
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||||
# MA 02110-1301, USA.
|
||||
|
||||
|
||||
check()
|
||||
{
|
||||
func_addr_1=`grep $2 $1 | awk '{print $1}'`
|
||||
func_addr_2=`grep $3 $1 | awk '{print $1}'`
|
||||
if [ $func_addr_1 = $func_addr_2 ]
|
||||
then
|
||||
echo "Identical Code Folding should not fold" $2 "and" $3
|
||||
exit 1
|
||||
fi
|
||||
}
|
||||
|
||||
check icf_sht_rel_addend_test.stdout "name1" "name2"
|
||||
44
gold/testsuite/icf_sht_rel_addend_test_1.cc
Normal file
44
gold/testsuite/icf_sht_rel_addend_test_1.cc
Normal file
@ -0,0 +1,44 @@
|
||||
// icf_sht_rel_addend_test_1.cc -- a test case for gold
|
||||
|
||||
// Copyright 2010 Free Software Foundation, Inc.
|
||||
// Written by Sriraman Tallam <tmsriram@google.com>.
|
||||
|
||||
// This file is part of gold.
|
||||
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||||
// MA 02110-1301, USA.
|
||||
|
||||
// The goal of this program is to verify is strings are handled correctly
|
||||
// by ICF when the relocation types are SHT_REL. ICF inlines strings that
|
||||
// can be merged. To do this, it must get the addend of the relocation
|
||||
// pointing to the string. For SHT_REL relocations, the addend is encoded
|
||||
// in the text section at the offset of the relocation. If ICF fails to
|
||||
// get the addend correctly, function name1 will be incorrectly folded with
|
||||
// function name2 in icf_sht_rel_addend_test_2.cc.
|
||||
|
||||
|
||||
const char* bar()
|
||||
{
|
||||
return "AAAAAA";
|
||||
}
|
||||
const char* name1()
|
||||
{
|
||||
return "Name1";
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
39
gold/testsuite/icf_sht_rel_addend_test_2.cc
Normal file
39
gold/testsuite/icf_sht_rel_addend_test_2.cc
Normal file
@ -0,0 +1,39 @@
|
||||
// icf_sht_rel_addend_test_2.cc -- a test case for gold
|
||||
|
||||
// Copyright 2010 Free Software Foundation, Inc.
|
||||
// Written by Sriraman Tallam <tmsriram@google.com>.
|
||||
|
||||
// This file is part of gold.
|
||||
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
||||
// MA 02110-1301, USA.
|
||||
|
||||
// The goal of this program is to verify is strings are handled correctly
|
||||
// by ICF when the relocation types are SHT_REL. ICF inlines strings that
|
||||
// can be merged. To do this, it must get the addend of the relocation
|
||||
// pointing to the string. For SHT_REL relocations, the addend is encoded
|
||||
// in the text section at the offset of the relocation. If ICF fails to
|
||||
// get the addend correctly, function name1 in icf_sht_rel_addend_test_1.cc
|
||||
// will be incorrectly folded with name2.
|
||||
|
||||
|
||||
const char* foo()
|
||||
{
|
||||
return "AAAAAA";
|
||||
}
|
||||
const char* name2()
|
||||
{
|
||||
return "Name2";
|
||||
}
|
||||
@ -1781,7 +1781,8 @@ Target_x86_64::gc_process_relocs(Symbol_table* symtab,
|
||||
}
|
||||
|
||||
gold::gc_process_relocs<64, false, Target_x86_64, elfcpp::SHT_RELA,
|
||||
Target_x86_64::Scan>(
|
||||
Target_x86_64::Scan,
|
||||
Target_x86_64::Relocatable_size_for_reloc>(
|
||||
symtab,
|
||||
layout,
|
||||
this,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user