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Relocation C wrapper added

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This commit is contained in:
Serge Lamikhov-Center 2020-10-12 08:57:26 +03:00
parent 8597197741
commit e55e5894c5
3 changed files with 100 additions and 20 deletions
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24
examples/c_wrapper/c_example.c
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@ -19,7 +19,6 @@ int main( int argc, char* argv[] )
/* Uncomment a block of the interest */ /* Uncomment a block of the interest */
/*
int secno = elfio_get_sections_num( pelfio ); int secno = elfio_get_sections_num( pelfio );
printf( "\nSections No : %d\n", secno ); printf( "\nSections No : %d\n", secno );
@ -27,27 +26,23 @@ int main( int argc, char* argv[] )
psection_t psection = elfio_get_section_by_index( pelfio, i ); psection_t psection = elfio_get_section_by_index( pelfio, i );
char buff[128]; char buff[128];
elfio_section_get_name( psection, buff, 100 ); elfio_section_get_name( psection, buff, 100 );
printf( " [%02d] %s\n", i, buff ); // printf( " [%02d] %s\n", i, buff );
printf( " %08lx : %08lx\n", // printf( " %08lx : %08lx\n",
elfio_section_get_address( psection ), // elfio_section_get_address( psection ),
elfio_section_get_size( psection ) ); // elfio_section_get_size( psection ) );
} }
*/
/*
int segno = elfio_get_segments_num( pelfio ); int segno = elfio_get_segments_num( pelfio );
printf( "\nSegments No : %d\n", segno ); printf( "\nSegments No : %d\n", segno );
for ( int i = 0; i < segno; i++ ) { for ( int i = 0; i < segno; i++ ) {
psegment_t psegment = elfio_get_segment_by_index( pelfio, i ); psegment_t psegment = elfio_get_segment_by_index( pelfio, i );
printf( " [%02d] %08lx : %08lx : %08lx\n", i, // printf( " [%02d] %08lx : %08lx : %08lx\n", i,
elfio_segment_get_virtual_address( psegment ), // elfio_segment_get_virtual_address( psegment ),
elfio_segment_get_memory_size( psegment ), // elfio_segment_get_memory_size( psegment ),
elfio_segment_get_file_size( psegment ) ); // elfio_segment_get_file_size( psegment ) );
} }
*/
/*
psection_t psection = elfio_get_section_by_name( pelfio, ".symtab" ); psection_t psection = elfio_get_section_by_name( pelfio, ".symtab" );
psymbol_t psymbols = elfio_symbol_section_accessor_new( pelfio, psection ); psymbol_t psymbols = elfio_symbol_section_accessor_new( pelfio, psection );
int symno = elfio_symbol_get_symbols_num( psymbols ); int symno = elfio_symbol_get_symbols_num( psymbols );
@ -61,10 +56,9 @@ int main( int argc, char* argv[] )
unsigned char other; unsigned char other;
elfio_symbol_get_symbol( psymbols, i, name, 128, &value, &size, elfio_symbol_get_symbol( psymbols, i, name, 128, &value, &size,
&bind, &type, &section_index, &other ); &bind, &type, &section_index, &other );
printf( "[%4d] %10lu, %4lu %s\n", i, value, size, name ); // printf( "[%4d] %10lu, %4lu %s\n", i, value, size, name );
} }
elfio_symbol_section_accessor_delete( psymbols ); elfio_symbol_section_accessor_delete( psymbols );
*/
elfio_delete( pelfio ); elfio_delete( pelfio );

55
examples/c_wrapper/elfio_c_wrapper.cpp
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@ -242,3 +242,58 @@ Elf_Xword elfio_symbol_arrange_local_symbols(
{ {
return psymbol->arrange_local_symbols( func ); return psymbol->arrange_local_symbols( func );
} }
//-----------------------------------------------------------------------------
// relocation
//-----------------------------------------------------------------------------
prelocation_t elfio_relocation_section_accessor_new( pelfio_t pelfio,
psection_t psection )
{
return new relocation_section_accessor( *pelfio, psection );
}
void elfio_relocation_section_accessor_delete( prelocation_t prelocation )
{
delete prelocation;
}
Elf_Xword elfio_relocation_get_entries_num( prelocation_t prelocation )
{
return prelocation->get_entries_num();
}
bool elfio_relocation_get_entry( prelocation_t prelocation,
Elf_Xword index,
Elf64_Addr* offset,
Elf_Word* symbol,
Elf_Word* type,
Elf_Sxword* addend )
{
return prelocation->get_entry( index, *offset, *symbol, *type, *addend );
}
bool elfio_relocation_set_entry( prelocation_t prelocation,
Elf_Xword index,
Elf64_Addr offset,
Elf_Word symbol,
Elf_Word type,
Elf_Sxword addend )
{
return prelocation->set_entry( index, offset, symbol, type, addend );
}
void elfio_relocation_add_entry( prelocation_t prelocation,
Elf64_Addr offset,
Elf_Word symbol,
unsigned char type,
Elf_Sxword addend )
{
return prelocation->add_entry( offset, symbol, type, addend );
}
void elfio_relocation_swap_symbols( prelocation_t prelocation,
Elf_Xword first,
Elf_Xword second )
{
prelocation->swap_symbols( first, second );
}

41
examples/c_wrapper/elfio_c_wrapper.h
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@ -76,10 +76,11 @@ THE SOFTWARE.
void elfio_##CLASS##_set_##NAME( p##CLASS##_t p##CLASS, TYPE value ) void elfio_##CLASS##_set_##NAME( p##CLASS##_t p##CLASS, TYPE value )
#ifdef __cplusplus #ifdef __cplusplus
typedef ELFIO::elfio* pelfio_t; typedef ELFIO::elfio* pelfio_t;
typedef ELFIO::section* psection_t; typedef ELFIO::section* psection_t;
typedef ELFIO::segment* psegment_t; typedef ELFIO::segment* psegment_t;
typedef ELFIO::symbol_section_accessor* psymbol_t; typedef ELFIO::symbol_section_accessor* psymbol_t;
typedef ELFIO::relocation_section_accessor* prelocation_t;
extern "C" extern "C"
{ {
@ -88,6 +89,7 @@ typedef void* pelfio_t;
typedef void* psection_t; typedef void* psection_t;
typedef void* psegment_t; typedef void* psegment_t;
typedef void* psymbol_t; typedef void* psymbol_t;
typedef void* prelocation_t;
typedef int bool; typedef int bool;
#endif #endif
@ -195,7 +197,36 @@ typedef int bool;
unsigned char other, unsigned char other,
Elf_Half shndx ); Elf_Half shndx );
Elf_Xword elfio_symbol_arrange_local_symbols( Elf_Xword elfio_symbol_arrange_local_symbols(
psymbol_t psymbol, void (*func)( Elf_Xword first, Elf_Xword second ) ); psymbol_t psymbol,
void ( *func )( Elf_Xword first, Elf_Xword second ) );
//-----------------------------------------------------------------------------
// relocation
//-----------------------------------------------------------------------------
prelocation_t elfio_relocation_section_accessor_new( pelfio_t pelfio,
psection_t psection );
void elfio_relocation_section_accessor_delete( prelocation_t prelocation );
Elf_Xword elfio_relocation_get_entries_num( prelocation_t prelocation );
bool elfio_relocation_get_entry( prelocation_t prelocation,
Elf_Xword index,
Elf64_Addr* offset,
Elf_Word* symbol,
Elf_Word* type,
Elf_Sxword* addend );
bool elfio_relocation_set_entry( prelocation_t prelocation,
Elf_Xword index,
Elf64_Addr offset,
Elf_Word symbol,
Elf_Word type,
Elf_Sxword addend );
void elfio_relocation_add_entry( prelocation_t prelocation,
Elf64_Addr offset,
Elf_Word symbol,
unsigned char type,
Elf_Sxword addend );
void elfio_relocation_swap_symbols( prelocation_t prelocation,
Elf_Xword first,
Elf_Xword second );
#ifdef __cplusplus #ifdef __cplusplus
} }