AT&T UNIX™PC Unix System V Users Manual - tenox

RELOC ( 4) RELOC ( 4)
NAME
reloc - relocation information for a common object file
SYNOPSIS
#include < reloc.h >
DESCRIPTION
Obj ect 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 ; I* (virtual) address of reference *I
long r_symndx ; I* index into symbol table *I
short r_type ; I* relocation type *I
} ;
I*
* All generics
* reloc. already performed to symbol in the same section
*I
#define R__ABS
0
I*
* 3B generic
* 24-bit direct reference
* 24-bit "relative" reference
*
*
*
16-bit optimized "indirect" TV reference
24-bit "indirect" TV reference
32-bit "indirect" TV reference
*I
#define R_DIR24 04
#define R_REL24 05
#define R_OPT16 014
#define R_IND24 015
#define R_IND32 016
I*
* DEC Processors VAX. 111780 and VAX. 111750
*
*I
#define R_RELBYTE 017
#define R_RELWORD 020
#define R_RELLONG 021
#define RYCRBYTE 022
#define RYCRWORD 023
#define R_PCRLONG 024
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.
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