RELOC(4) RELOC(4)
NAME
reloc - relocation information for a common object file
SYNOPSIS
#include <reloc.h>
DESCRIPTION
Object files have one relocation entry for each relocatable
reference in the text or data. If relocation information is
present, it will be in the following format.
struct reloc
{
long r_vaddr ; /* (virtual) address of reference */
long r_symndx ; /* index into symbol table */
ushort r_type ; /* relocation type */
} ;
#define R_ABS 0
#define R_DIR32 06
#define R_DIR32S 012
As the link editor reads each input section and performs
relocation, the relocation entries are read. They direct
how references found within the input section are treated.
R_ABS The reference is absolute and no
relocation is necessary. The entry will
be ignored.
R_DIR32 A direct 32-bit reference to the symbol's
virtual address.
R_DIR32S A direct 32-bit reference to the symbol's
virtual address, with the 32-bit value
stored in the reverse order in the object
file.
More relocation types exist for other processors.
Page 1 May 1989
RELOC(4) RELOC(4)
Equivalent relocation types on different processors have
equal values and meanings. New relocation types will be
defined (with new values) as they are needed.
Relocation entries are generated automatically by the
assembler and automatically used by the link editor. Link
editor options exist for both preserving and removing the
relocation entries from object files.
SEE ALSO
as(1), ld(1), a.out(4), syms(4).
Page 2 May 1989