feat: readcoff
This commit is contained in:
parent
eb24cb88c2
commit
164c1de23f
8 changed files with 204 additions and 11 deletions
7
Makefile
7
Makefile
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@ -15,9 +15,12 @@ RM = rm -f
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MK_BUGREPORT := \"https://git.cute.engineering/d0p1/StupidOS/issues\"
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MK_COMMIT := \"$(shell git rev-parse --short HEAD)\"
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MK_PACKAGE := \"StupidOS\"
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CFLAGS = -DMK_COMMIT="$(MK_COMMIT)" -DMK_BUGREPORT="$(MK_BUGREPORT)" -I$(TOPDIR)include
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CFLAGS = -DMK_COMMIT="$(MK_COMMIT)" \
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-DMK_BUGREPORT="$(MK_BUGREPORT)" \
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-DMK_PACKAGE="$(MK_PACKAGE)" \
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-I$(TOPDIR)include
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LDFLAGS =
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175
bin/readcoff/main.c
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175
bin/readcoff/main.c
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@ -0,0 +1,175 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <time.h>
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#include <string.h>
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#ifndef __stupidos__
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# include <libgen.h>
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#endif
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#include <coff.h>
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static const struct {
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int magic;
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char *machine;
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} MACHINES[] = {
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{F_MACH_AM33, "Matsushita AM33"},
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{F_MACH_AMD64, "Intel amd64"},
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{F_MACH_ARM, "ARM"},
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{F_MACH_ARMNT, "ARM Thumb-2"},
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{F_MACH_EBC, "EFI byte code"},
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{F_MACH_I386, "Intel 80386"},
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{F_MACH_IA64, "IA64"},
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{F_MACH_M32R, "Mitsubishi M32R"},
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/* TODO */
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{F_MACH_UNKNOWN, "unknown"}
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};
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/* */
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static const char *prg_name;
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static const char *mach = NULL;
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/* */
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static int display_header = 0;
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static int display_program_header = 0;
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static int display_sections = 0;
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static void
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usage(int retval)
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{
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if (retval == EXIT_FAILURE)
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{
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fprintf(stderr, "Try '%s -h' for more informations.", prg_name);
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}
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else
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{
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printf("Usage: %s [OPTIONS...] [FILES]\n", prg_name);
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printf("Options are:\n");
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printf("\t-a\tEquivalent to: -H -l -S -s -r -d -v -A -I\n");
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printf("\t-H\tDisplay the COFF file header\n");
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}
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exit(retval);
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}
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static void
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version(void)
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{
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printf("%s (%s) %s", prg_name, MK_PACKAGE, MK_COMMIT);
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exit(EXIT_SUCCESS);
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}
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int
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main(int argc, char **argv)
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{
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FILHDR file_header;
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AOUTHDR aout_header;
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SCNHDR section_header;
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char name[9];
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char *type;
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FILE *fp;
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int idx;
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time_t timedat;
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#ifndef __stupidos__
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prg_name = basename(argv[0]);
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#else
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prg_name = argv[0];
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#endif
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while ((argc > 1) && (argv[1][0] == '-'))
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{
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switch (argv[1][1])
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{
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case 'a':
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display_header = 1;
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display_program_header = 1;
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display_sections = 1;
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break;
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case 'H':
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display_header = 1;
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break;
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case 'h':
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usage(EXIT_SUCCESS);
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break;
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case 'V':
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version();
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break;
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}
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argv++;
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argc--;
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}
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if (argc <= 1) usage(EXIT_FAILURE);
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fp = fopen(argv[1], "rb");
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if (fp == NULL)
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{
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return (EXIT_FAILURE);
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}
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if (display_header)
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{
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if (fread(&file_header, 1, FILHSZ, fp) != FILHSZ)
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{
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return (EXIT_FAILURE);
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}
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for (idx = 0; MACHINES[idx].magic != F_MACH_UNKNOWN; idx++)
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{
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if (MACHINES[idx].magic == file_header.f_magic)
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{
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mach = MACHINES[idx].machine;
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break;
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}
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}
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if (mach == NULL) return (EXIT_FAILURE);
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printf("COFF Header:\n");
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printf(" Machine: %s\n", mach);
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printf(" Number of section headers: %hd\n", file_header.f_nscns);
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timedat = file_header.f_timdat;
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printf(" Created at: %s", ctime(&timedat));
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printf(" Start of Symbol Table: %d (bytes into file)\n", file_header.f_symptr);
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printf(" Number of Symbols: %d\n", file_header.f_nsyms);
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printf(" Size of optional header: %hu\n", file_header.f_opthdr);
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printf(" Flags: 0x%hx\n\n", file_header.f_flags);
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}
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if (display_sections)
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{
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fseek(fp, file_header.f_opthdr + FILHSZ, SEEK_SET);
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printf("Section Headers:\n");
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printf("[Nr] Name Type Address Offset\n");
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printf(" Size\n");
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for (idx = 0; idx < file_header.f_nscns; idx++)
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{
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if (fread(§ion_header, 1, SCNHSZ, fp) != SCNHSZ)
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{
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return (EXIT_FAILURE);
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}
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memset(name, 0, 9);
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memcpy(name, section_header.s_name, 8);
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if (section_header.s_flags & STYP_TEXT)
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{
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type = "TEXT";
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} else if (section_header.s_flags & STYP_DATA)
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{
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type = "DATA";
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}
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else if (section_header.s_flags & STYP_BSS)
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{
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type = "BSS";
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}
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else
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{
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type = "???";
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}
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printf("[%2d] %-8s %-8s %08X %08X\n", idx, name, type, section_header.s_vaddr, section_header.s_scnptr);
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printf(" %08X\n", section_header.s_size);
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}
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}
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return (EXIT_SUCCESS);
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}
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@ -69,3 +69,13 @@ About: File Header
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| uint32_t | Number of entries in the symtab |
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| uint16_t | Optional header size |
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| uint16_t | Flags |
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About: Optional Header
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About: Section Header
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About: Usefull links
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- <https://wiki.osdev.org/COFF>
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- <http://www.delorie.com/djgpp/doc/coff/filhdr.html>
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- <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>
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@ -6,7 +6,6 @@ The "Hungarian" notation conventions MUST be used.
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Comments:
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TO BE ADDED
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About: C
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@ -20,7 +20,7 @@ Timestamp: Updated yyyy/mm/dd
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# These are indexes you deleted, so Natural Docs will not add them again
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# unless you remove them from this line.
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Don't Index: Variables, Macros, Classes
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Don't Index: Variables, Classes, Macros
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# --------------------------------------------------------------------------
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@ -48,6 +48,7 @@ Link: Source Code (https://git.cute.engineering/d0p1/StupidOS)
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File: Coding Style (docs/coding-style.txt)
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File: FAQ (docs/faq.txt)
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Link: StupidFS (https://stupidfs.d0p1.eu/)
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File: Common Object File Format &lparen;COFF&rparen; (docs/COFF.txt)
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Group: BootLoader {
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@ -56,11 +57,13 @@ Group: BootLoader {
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Group: BootSector {
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File: floppy.asm (boot/bootsect/floppy.asm)
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File: hdd.asm (boot/bootsect/hdd.asm)
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} # Group: BootSector
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Group: Loader {
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File: loader.asm (boot/loader/loader.asm)
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File: logger.inc (boot/loader/logger.inc)
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File: memory.inc (boot/loader/memory.inc)
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} # Group: Loader
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@ -81,6 +84,7 @@ Group: BootLoader {
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Group: Kernel {
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File: kernel memory map (kernel/intro.txt)
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File: kernel.asm (kernel/kernel.asm)
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} # Group: Kernel
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@ -93,6 +97,8 @@ Group: Lib {
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Group: Crypto {
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File: rc4.asm (no auto-title, lib/crypto/rc4/rc4.asm)
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Group: chacha20 {
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File: chacha20.asm (lib/crypto/chacha20/chacha20.asm)
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@ -110,6 +116,7 @@ Group: Lib {
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} # Group: Crypto
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File: ctype (lib/c/ctype.asm)
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} # Group: Lib
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Group: Index {
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@ -118,6 +125,5 @@ Group: Index {
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Constant Index: Constants
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File Index: Files
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Function Index: Functions
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Property Index: Properties
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} # Group: Index
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@ -1,4 +1,4 @@
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TARGET = fat$(EXEXT) coff-ld$(EXEXT) parted$(EXEXT) mkfs.stpd$(EXEXT)
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TARGET = fat$(EXEXT) coff-ld$(EXEXT) parted$(EXEXT) mkfs.stpd$(EXEXT) readcoff$(EXEXT)
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.PHONY: all
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all: $(TARGET)
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@ -6,15 +6,14 @@ all: $(TARGET)
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fat$(EXEXT): fat.c
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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coff-ld$(EXEXT): coff-ld.c
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coff-ld$(EXEXT): ../bin/ld/main.c
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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readcoff$(EXEXT): ../bin/readcoff/main.c
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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parted$(EXEXT): ../sbin/parted/main.c
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ifneq (,$(findstring cl,$(CC)))
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$(CC) /Fo:$@ $^ $(CFLAGS) $(LDFLAGS)
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else
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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endif
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mkfs.stpd$(EXEXT): ../sbin/mkfs.stpd/main.c
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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1
tools/coff2elf/main.c
Normal file
1
tools/coff2elf/main.c
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#include <coff.h>
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