feat(bin/readcoff): display symtab
This commit is contained in:
parent
164c1de23f
commit
a12220d492
|
|
@ -5,11 +5,13 @@
|
|||
static char *prg_name;
|
||||
static char *outfile = "a.out";
|
||||
|
||||
typedef struct section
|
||||
{
|
||||
typedef struct {
|
||||
|
||||
} Section;
|
||||
|
||||
typedef struct {
|
||||
|
||||
} Object;
|
||||
|
||||
static void
|
||||
usage(int retcode)
|
||||
|
|
@ -45,7 +47,7 @@ main(int argc, char **argv)
|
|||
FILHDR fhdr;
|
||||
SCNHDR shdr;
|
||||
uint8_t *buffer;
|
||||
SYM entry;
|
||||
SYMENT entry;
|
||||
RELOC reloc;
|
||||
int idx;
|
||||
|
||||
|
|
@ -108,7 +110,7 @@ main(int argc, char **argv)
|
|||
|
||||
for (idx = 0; idx < fhdr.f_nsyms; idx++)
|
||||
{
|
||||
fread(&entry, 1, SYMSZ, fp);
|
||||
fread(&entry, 1, SYMESZ, fp);
|
||||
printf("name: %c%c%c%c%c%c%c%c\n", entry.n_name[0], entry.n_name[1],entry.n_name[2],entry.n_name[3],entry.n_name[4],entry.n_name[5],entry.n_name[6],entry.n_name[7]);
|
||||
printf("\tvalue: %d\n", entry.n_value);
|
||||
printf("\tscnum: %hd\n", entry.n_scnum);
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
#include <stdio.h>
|
||||
#include <time.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
#ifndef __stupidos__
|
||||
# include <libgen.h>
|
||||
#endif
|
||||
|
|
@ -29,9 +30,9 @@ static const char *mach = NULL;
|
|||
|
||||
/* */
|
||||
static int display_header = 0;
|
||||
static int display_program_header = 0;
|
||||
static int display_optional_header = 0;
|
||||
static int display_sections = 0;
|
||||
|
||||
static int display_symbol_table = 0;
|
||||
|
||||
static void
|
||||
usage(int retval)
|
||||
|
|
@ -64,6 +65,7 @@ main(int argc, char **argv)
|
|||
FILHDR file_header;
|
||||
AOUTHDR aout_header;
|
||||
SCNHDR section_header;
|
||||
SYMENT sym_entry;
|
||||
char name[9];
|
||||
char *type;
|
||||
FILE *fp;
|
||||
|
|
@ -82,7 +84,8 @@ main(int argc, char **argv)
|
|||
{
|
||||
case 'a':
|
||||
display_header = 1;
|
||||
display_program_header = 1;
|
||||
display_optional_header = 1;
|
||||
display_symbol_table = 1;
|
||||
display_sections = 1;
|
||||
break;
|
||||
case 'H':
|
||||
|
|
@ -169,6 +172,23 @@ main(int argc, char **argv)
|
|||
printf("[%2d] %-8s %-8s %08X %08X\n", idx, name, type, section_header.s_vaddr, section_header.s_scnptr);
|
||||
printf(" %08X\n", section_header.s_size);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
if (display_symbol_table)
|
||||
{
|
||||
printf("Symbol table contains %d entries:\n", file_header.f_nsyms);
|
||||
printf(" Num: Value Type Name\n");
|
||||
assert(sizeof(SYMENT) == SYMESZ);
|
||||
for (idx = 0; idx <= file_header.f_nsyms; idx++)
|
||||
{
|
||||
fseek(fp, file_header.f_symptr + (SYMESZ * idx), SEEK_SET);
|
||||
fread(&sym_entry, 1, SYMESZ, fp);
|
||||
memset(name, 0, 9);
|
||||
memcpy(name, sym_entry.n_name, 8);
|
||||
printf(" %d: %08x %hd %s\n", idx, sym_entry.n_value, sym_entry.n_type, name);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
return (EXIT_SUCCESS);
|
||||
|
|
|
|||
|
|
@ -79,3 +79,4 @@ About: Usefull links
|
|||
- <https://wiki.osdev.org/COFF>
|
||||
- <http://www.delorie.com/djgpp/doc/coff/filhdr.html>
|
||||
- <Official Microsoft COFF Specification (2016) at https://web.archive.org/web/20230703150217/https%3A%2F%2Fdownload.microsoft.com%2Fdownload%2F9%2Fc%2F5%2F9c5b2167-8017-4bae-9fde-d599bac8184a%2Fpecoff_v83.docx>
|
||||
- <UNIX System V/386 Release 3.2 Programmer's Guide, Volume II at http://bitsavers.org/pdf/att/unix/System_V_386_Release_3.2/UNIX_System_V_386_Release_3.2_Programmers_Guide_Vol2_1989.pdf>
|
||||
|
|
|
|||
172
include/coff.h
172
include/coff.h
|
|
@ -16,7 +16,30 @@ typedef struct filehdr
|
|||
|
||||
# define FILHSZ sizeof(FILHDR)
|
||||
|
||||
# define F_MACH_I386 0x014c
|
||||
# define F_MACH_UNKNOWN 0x0
|
||||
# define F_MACH_AM33 0x1d3
|
||||
# define F_MACH_AMD64 0x8664
|
||||
# define F_MACH_ARM 0x1c0
|
||||
# define F_MACH_ARMNT 0x1c4
|
||||
# define F_MACH_EBC 0xebc
|
||||
# define F_MACH_I386 0x14c
|
||||
# define F_MACH_IA64 0x200
|
||||
# define F_MACH_M32R 0x9041
|
||||
# define F_MACH_MIPS16 0x266
|
||||
# define F_MACH_MIPSFPU 0x366
|
||||
# define F_MACH_MIPSFPU16 0x466
|
||||
# define F_MACH_POWERPC 0x1f0
|
||||
# define F_MACH_POWERPCFP 0x1f1
|
||||
# define F_MACH_R4000 0x166
|
||||
# define F_MACH_RISCV32 0x5032
|
||||
# define F_MACH_RISCV64 0x5064
|
||||
# define F_MACH_RISCV128 0x5128
|
||||
# define F_MACH_SH3 0x1a2
|
||||
# define F_MACH_SH3DSP 0x1a3
|
||||
# define F_MACH_SH4 0x1a6
|
||||
# define F_MACH_SH5 0x1a8
|
||||
# define F_MACH_THUMB 0x1c2
|
||||
# define F_MACH_WCEMIPSV2 0x169
|
||||
|
||||
# define F_RELFLG 0x0001
|
||||
# define F_EXEC 0x0002
|
||||
|
|
@ -82,11 +105,12 @@ typedef struct reloc
|
|||
} __attribute__((packed)) RELOC;
|
||||
# define RELSZ 10
|
||||
|
||||
# define R_ABS 0x000
|
||||
# define R_DIR16 0x001
|
||||
# define R_REL16 0x002
|
||||
# define R_DIR32 0x006
|
||||
# define R_PCRLONG 0x024
|
||||
# define R_ABS 0
|
||||
# define R_DIR16 01
|
||||
# define R_REL16 02
|
||||
# define R_DIR32 06
|
||||
# define R_SEG12 011
|
||||
# define R_PCRLONG 024
|
||||
|
||||
typedef struct lineno
|
||||
{
|
||||
|
|
@ -99,22 +123,132 @@ typedef struct lineno
|
|||
} __attribute__((packed)) LINENO;
|
||||
# define LINESZ 6
|
||||
|
||||
typedef struct sym
|
||||
{
|
||||
uint8_t n_name[8];
|
||||
int32_t n_value;
|
||||
int16_t n_scnum;
|
||||
uint16_t n_type;
|
||||
uint8_t n_sclass;
|
||||
uint8_t n_numaux;
|
||||
} __attribute__((packed)) SYM;
|
||||
# define SYMSZ 18
|
||||
|
||||
# define N_UNDEF (0x0)
|
||||
# define N_ABS (-0x1)
|
||||
# define N_DEBUG (-0x2)
|
||||
|
||||
# define C_EXT 0x2
|
||||
# define C_STAT 0x3
|
||||
# define C_EFCN -1 /* physical end of a function */
|
||||
# define C_NULL 0
|
||||
# define C_AUTO 1
|
||||
# define C_EXT 2 /* external symbol */
|
||||
# define C_STAT 3 /* static */
|
||||
# define C_REG 4 /* register var */
|
||||
# define C_EXTDEF 5 /* external definition */
|
||||
# define C_LABEL 6
|
||||
# define C_ULABEL 7 /* undefined label */
|
||||
# define C_MOS 8 /* member of struct */
|
||||
# define C_ARG 9
|
||||
# define C_STRTAG 10 /* struct tag */
|
||||
# define C_MOU 11 /* member of union */
|
||||
# define C_UNTAG 12 /* union tag */
|
||||
# define C_TPDEF 13 /* typedef */
|
||||
# define C_USTATIC 14
|
||||
# define C_ENTAG 15
|
||||
# define C_MOE 16
|
||||
# define C_REGPARM 17
|
||||
# define C_FIELD 18
|
||||
# define C_BLOCK 100
|
||||
# define C_FCN 101
|
||||
# define C_EOS 102
|
||||
# define C_FILE 103
|
||||
# define C_LINE 104
|
||||
# define C_ALIAS 105
|
||||
# define C_HIDDEN 106
|
||||
|
||||
# define T_NULL 0
|
||||
# define T_ARG 1
|
||||
# define T_CHAR 2
|
||||
# define T_SHORT 3
|
||||
# define T_INT 4
|
||||
# define T_LONG 5
|
||||
# define T_FLOAT 6
|
||||
# define T_DOUBLE 7
|
||||
# define T_STRUCT 8
|
||||
# define T_UNION 9
|
||||
# define T_ENUM 10
|
||||
# define T_MOE 11
|
||||
# define T_UCHAR 12
|
||||
# define T_USHORT 13
|
||||
# define T_UINT 14
|
||||
# define T_ULONG 15
|
||||
|
||||
# define DT_NON 0
|
||||
# define DT_PTR 1
|
||||
# define DT_FCN 2
|
||||
# define DT_ARY 3
|
||||
|
||||
typedef struct syment
|
||||
{
|
||||
union
|
||||
{
|
||||
char _n_name[8]; /* symbol name */
|
||||
struct
|
||||
{
|
||||
int32_t _n_zeroes; /* symbol name */
|
||||
int32_t _n_offset; /* loc in str table */
|
||||
} _n_n;
|
||||
uint32_t _n_nptr[2];
|
||||
} _n;
|
||||
uint32_t n_value;
|
||||
int16_t n_scnum;
|
||||
uint16_t n_type;
|
||||
int8_t n_sclass;
|
||||
int8_t n_numaux;
|
||||
} __attribute__((packed)) SYMENT;
|
||||
|
||||
# define SYMESZ 18
|
||||
|
||||
# define n_name _n._n_name
|
||||
# define n_zeroes _n._n_n._n_zeroes
|
||||
# define n_offset _n._n_n._n_offset
|
||||
# define n_nptr _n._n_nptr[1]
|
||||
|
||||
typedef union auxent
|
||||
{
|
||||
struct
|
||||
{
|
||||
int32_t x_tagndx;
|
||||
union
|
||||
{
|
||||
struct
|
||||
{
|
||||
uint16_t x_lnno;
|
||||
uint16_t x_size;
|
||||
} x_lnsz;
|
||||
int32_t x_fsize;
|
||||
} x_misc;
|
||||
union
|
||||
{
|
||||
struct
|
||||
{
|
||||
int32_t x_lnnoptr;
|
||||
int32_t x_endndx;
|
||||
} x_fcn;
|
||||
struct
|
||||
{
|
||||
uint16_t x_dimen[4];
|
||||
} x_ary;
|
||||
} x_fcnary;
|
||||
uint16_t x_tvndx;
|
||||
} x_sym;
|
||||
struct
|
||||
{
|
||||
char x_fname[14];
|
||||
} x_file;
|
||||
struct
|
||||
{
|
||||
int32_t x_scnlen;
|
||||
uint16_t x_nreloc;
|
||||
uint16_t x_nlinno;
|
||||
} x_scn;
|
||||
struct
|
||||
{
|
||||
int32_t x_tvfill;
|
||||
uint16_t x_tvlen;
|
||||
uint16_t x_tvran[2];
|
||||
} x_tv;
|
||||
} AUXENT;
|
||||
|
||||
# define AUXESZ 18
|
||||
|
||||
#endif /* !COFF_H */
|
||||
|
|
|
|||
Loading…
Reference in a new issue