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rln
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Fixed bug with absolute globals not being relocated properly.

This commit is contained in:
Shamus Hammons 2014-01-15 22:22:28 -06:00
parent a9928b064f
commit f60139df3c
2 changed files with 350 additions and 327 deletions
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607
rln.c
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70
rln.h
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@ -50,9 +50,9 @@
#include <unistd.h>
#endif
#define MAJOR 1 // Major version number
#define MINOR 2 // Minor version number
#define PATCH 1 // Patch release number
#define MAJOR 1 // Major version number
#define MINOR 2 // Minor version number
#define PATCH 2 // Patch release number
#ifdef WIN32
#define PLATFORM "Win32" // Release platform - Windows
@ -75,13 +75,13 @@
// Macro to swap the 16-bit words of a 32-bit integer
#define _SWAPWORD(x) (((unsigned)(x) >> 16) | ((unsigned)(x) << 16))
#define FARGSIZE 1024 // Number of chars in filename argument
#define FNLEN 1024 // Size of a file name
#define NHANDLES 256 // Number of open file handles at once
#define OST_BLOCK 0x400000 // Output symbol table block (4MB)
#define DSTSEG_D 1 // Include file destination seg (DATA)
#define DSTSEG_T 2 // Include file destination seg (TEXT)
#define MAXARGS 256 // Max number of args in a command file
#define FARGSIZE 1024 // Number of chars in filename argument
#define FNLEN 1024 // Size of a file name
#define NHANDLES 256 // Number of open file handles at once
#define OST_BLOCK 0x400000 // Output symbol table block (4MB)
#define DSTSEG_D 1 // Include file destination seg (DATA)
#define DSTSEG_T 2 // Include file destination seg (TEXT)
#define MAXARGS 256 // Max number of args in a command file
// Headers
@ -97,28 +97,28 @@
struct OHEADER
{
uint32_t magic; // $0107 for .o, $601B for abs
uint32_t magic; // $0107 for .o, $601B for abs
uint32_t tsize;
uint32_t dsize;
uint32_t bsize;
uint32_t ssize;
union {
struct { // For .o
uint32_t tsize; // Text relocation size
uint32_t dsize; // Data relocation size
struct { // For .o
uint32_t tsize; // Text relocation size
uint32_t dsize; // Data relocation size
uint8_t reserved[12];
} reloc;
struct { // For .abs
uint32_t stksize; // Unused
uint32_t tstart; // Start of TEXT
uint32_t rbflag; // -1 if no fixups at all
uint32_t dstart; // Start of DATA
uint32_t bstart; // Start of BSS
struct { // For .abs
uint32_t stksize; // Unused
uint32_t tstart; // Start of TEXT
uint32_t rbflag; // -1 if no fixups at all
uint32_t dstart; // Start of DATA
uint32_t bstart; // Start of BSS
} abs;
} absrel;
uint8_t * ostbase; // Base of output symbol table
uint32_t fsize; // Length of fixups
uint8_t * fixups; // Start of fixups
uint8_t * ostbase; // Base of output symbol table
uint32_t fsize; // Length of fixups
uint8_t * fixups; // Start of fixups
};
#define new_oheader() (struct OHEADER *)malloc((uint32_t)sizeof(struct OHEADER))
@ -131,7 +131,7 @@ struct ARHEADER
uint8_t a_gid;
uint16_t a_fimode;
uint32_t a_fsize;
uint16_t reserved; // Two bytes zeroes btw header & file
uint16_t reserved; // Two bytes zeroes btw header & file
};
#define new_arheader() (struct ARHEADER *)malloc((uint32_t)sizeof(struct ARHEADER))
@ -140,14 +140,14 @@ struct ARHEADER
struct OFILE
{
uint8_t o_name[FNLEN]; // Fixed-length names
uint8_t o_arname[FNLEN]; // Name of archive this is from
struct OFILE * o_next; // Next object file
uint32_t o_tbase, o_dbase, o_bbase; // Computed bases for this ofile
uint16_t o_symstart; // First sym in image is nth in out
uint16_t o_flags; // Flags (see O_*)
struct OHEADER o_header; // Header of this file
uint8_t * o_image; // Image of this file
uint8_t o_name[FNLEN]; // Fixed-length names
uint8_t o_arname[FNLEN]; // Name of archive this is from
struct OFILE * o_next; // Next object file
uint32_t o_tbase, o_dbase, o_bbase; // Computed bases for this ofile
uint16_t o_symstart; // First sym in image is nth in out
uint16_t o_flags; // Flags (see O_*)
struct OHEADER o_header; // Header of this file
uint8_t * o_image; // Image of this file
};
#define new_ofile() (struct OFILE *)malloc((uint32_t)sizeof(struct OFILE))
@ -155,7 +155,7 @@ struct OFILE
// Flags in an Object File's o_flags field
// O_USED: means this ofile is used or is on the command line or in a -x
#define O_USED 0x0001
#define O_ARCHIVE 0x0002 // This is a dummy archive entry
#define O_ARCHIVE 0x0002 // This is a dummy archive entry
// Symbol Record
@ -163,11 +163,11 @@ struct OFILE
// linker for the output symbol table (that's why there are type and value
// fields, unused in builddir)
#define SYMLEN 100 // Symbol name size (incl null)
#define SYMLEN 100 // Symbol name size (incl null)
struct SYMREC
{
uint8_t s_name[SYMLEN]; // Including null terminator
uint8_t s_name[SYMLEN]; // Including null terminator
uint16_t s_type;
uint32_t s_value;
struct SYMREC * s_next;