From 925d0670c45e1100e412070fa0ce2405604f219a Mon Sep 17 00:00:00 2001
From: Attila Veghelyi <aveghelyi@dension.com>
Date: Thu, 29 Jun 2023 16:24:54 +0200
Subject: Init repo

---
 coff.h | 208 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 208 insertions(+)
 create mode 100644 coff.h

(limited to 'coff.h')

diff --git a/coff.h b/coff.h
new file mode 100644
index 0000000..1175c04
--- /dev/null
+++ b/coff.h
@@ -0,0 +1,208 @@
+// COFF file parser
+// COFF file structure:
+// file header
+// optional header
+// sections(name, address, size, raw data pointer, reloc entry, ptr to first line, number of lines)
+// relocation entries
+// symbols (name, value, section, type, class) + optional info
+// lines (source file symbol, line number, address of code)
+// symbol table
+// string table
+
+#define LMAX 0x2200
+#define DATA_MAX 0x2200
+#define ULMAX 0x400
+
+typedef struct filehdr
+{
+    unsigned short f_magic;
+    unsigned short f_nscns;
+    unsigned long f_timdat;
+    unsigned long f_symptr;
+    unsigned long f_nsyms;
+    unsigned short f_opthdr;
+    unsigned short f_flags;
+} filehdr_t;
+
+typedef struct opthdr
+{
+    unsigned short magic;
+    unsigned long vstamp;
+    unsigned long proc_type;
+    unsigned long rom_width_bits;
+    unsigned long ram_width_bits;
+} opthdr_t;
+
+typedef struct scnhdr
+{
+    union
+    {
+      char _s_name[8]; /* section name is a string */
+      struct
+        {
+          unsigned long _s_zeroes;
+          unsigned long _s_offset;
+        }_s_s;
+    }_s;
+	unsigned long s_paddr;
+    unsigned long s_vaddr;
+    unsigned long s_size;
+    unsigned long s_scnptr;
+    unsigned long s_relptr;
+    unsigned long s_lnnoptr;
+    unsigned short s_nreloc;
+    unsigned short s_nlnno;
+    unsigned long s_flags;
+} scnhdr_t;
+
+typedef struct reloc
+{
+    unsigned long r_vaddr;
+    unsigned long r_symndx;
+    short r_offset;
+    unsigned short r_type;
+} reloc_t;
+
+#define SYMNMLEN 8
+typedef struct syment
+{
+    union
+    {
+      char _n_name[SYMNMLEN];
+      struct
+      {
+        unsigned long _n_zeroes;
+        unsigned long _n_offset;
+      } _n_n;
+      char *_n_nptr[2];
+    } _n;
+    unsigned long n_value;
+    short n_scnum;
+    unsigned long n_type;
+    char n_sclass;
+    unsigned char n_numaux;
+} syment_t;
+
+typedef struct coff_lineno
+{
+    unsigned long l_srcndx;
+    unsigned short l_lnno;
+    unsigned long l_paddr;
+    unsigned short l_flags;
+    unsigned long l_fcnndx;
+} coff_lineno_t;
+
+typedef struct aux_file
+{
+    unsigned long x_offset;
+    unsigned long x_incline;
+    unsigned char x_flags;
+    char _unused[11];
+} aux_file_t;
+
+typedef struct aux_scn
+{
+    unsigned long x_scnlen;
+    unsigned short x_nreloc;
+    unsigned short x_nlinno;
+    char _unused[12];
+} aux_scn_t;
+
+typedef struct aux_tag
+{
+    char _unused[6];
+    unsigned short x_size;
+    char _unused2[4];
+    unsigned long x_endndx;
+    char _unused3[4];
+} aux_tag_t;
+
+typedef struct aux_eos
+{
+    unsigned long x_tagndx;
+    char _unused[2];
+    unsigned short x_size;
+    char _unused2[12];
+} aux_eos_t;
+
+typedef struct aux_fcn
+{
+    unsigned long x_tagndx;
+    unsigned long x_size;
+    unsigned long x_lnnoptr;
+    unsigned long x_endndx;
+    short x_actscnum;
+    char _unused[2];
+} aux_fcn_t;
+
+typedef struct aux_fcn_calls
+{
+    unsigned long x_calleendx;
+    unsigned long x_is_interrupt;
+    char _unused[12];
+} aux_fcn_calls_t;
+
+#define X_DIMNUM 4
+typedef struct aux_arr
+{
+    unsigned long x_tagndx;
+    unsigned short x_lnno;
+    unsigned short x_size;
+    unsigned short x_dimen[X_DIMNUM];
+    char _unused[4];
+} aux_arr_t;
+
+typedef struct aux_eobf
+{
+    char _unused[4];
+    unsigned short x_lnno;
+    char _unused2[14];
+} aux_eobf_t;
+
+typedef struct aux_bobf
+{
+    char _unused[4];
+    unsigned short x_lnno;
+    char _unused2[6];
+    unsigned long x_endndx;
+    char _unused3[4];
+} aux_bobf_t;
+
+typedef struct aux_var
+{
+    unsigned long x_tagndx;
+    char _unused[2];
+    unsigned short x_size;
+    char _unused2[12];
+} aux_var_t;
+
+typedef struct aux_field
+{
+    char _unused[6];
+    unsigned short x_size;
+    char _unused2[12];
+} aux_field_t;
+
+struct src_i
+{
+	char* label;
+	int src_file;
+	int src_line;
+};
+
+struct srcfile {
+	unsigned long l_srcndx;
+	char* name;
+	FILE* ptr;
+	int nlines;
+	long int *lineptr;	//line pointer array
+};
+
+struct symbol {
+	char* name;
+	int value;
+};
+
+FILE* scanSourceFile(struct srcfile *s_files_p);
+int analyzeCOFF(char *filename,char* label[LMAX],char* ulabel[ULMAX],struct src_i source_info[LMAX],\
+					struct srcfile **s_files_p,unsigned short data[0x2200],struct symbol **sym_p, int* nsym);
-- 
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