From f3e040230772f978540a71aea43dfde200992922 Mon Sep 17 00:00:00 2001
From: "John Wilbert M. Villamor" <lameguy64@gmail.com>
Date: Sat, 6 Apr 2019 10:11:07 +0800
Subject: First commit

---
 tools/util/elf2x.c  | 300 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/util/makefile |  19 ++++
 2 files changed, 319 insertions(+)
 create mode 100644 tools/util/elf2x.c
 create mode 100644 tools/util/makefile

(limited to 'tools/util')

diff --git a/tools/util/elf2x.c b/tools/util/elf2x.c
new file mode 100644
index 0000000..940e4a1
--- /dev/null
+++ b/tools/util/elf2x.c
@@ -0,0 +1,300 @@
+// Originally written in C++ by Lameguy64
+// Ported to plain C by Orion
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define	MAX_prg_entry_count	128
+#define	true	(1)
+#define	false	(0)
+
+#pragma pack(push, 1)
+
+typedef struct {
+
+	unsigned int magic;				// 0-3
+	unsigned char word_size;		// 4
+	unsigned char endianness;		// 5
+	unsigned char elf_version;		// 6
+	unsigned char os_abi;			// 7
+	unsigned int unused[2];			// 8-15
+
+	unsigned short type;			// 16-17
+	unsigned short instr_set;		// 18-19
+	unsigned int elf_version2;		// 20-23
+
+	unsigned int prg_entry_addr;	// 24-27
+	unsigned int prg_head_pos;		// 28-31
+	unsigned int sec_head_pos;		// 32-35
+	unsigned int flags;				// 36-39
+	unsigned short head_size;		// 40-41
+	unsigned short prg_entry_size;	// 42-23
+	unsigned short prg_entry_count;	// 44-45
+	unsigned short sec_entry_size;	// 46-47
+	unsigned short sec_entry_count;	// 48-49
+	unsigned short sec_names_index;	// 50-51
+
+} ELF_HEADER;
+
+typedef struct {
+	unsigned int seg_type;
+	unsigned int p_offset;
+	unsigned int p_vaddr;
+	unsigned int undefined;
+	unsigned int p_filesz;
+	unsigned int p_memsz;
+	unsigned int flags;
+	unsigned int alignment;
+} PRG_HEADER;
+
+#pragma pack(pop)
+
+typedef struct {
+	unsigned int pc0;
+	unsigned int gp0;
+	unsigned int t_addr;
+	unsigned int t_size;
+	unsigned int d_addr;
+	unsigned int d_size;
+	unsigned int b_addr;
+	unsigned int b_size;
+	unsigned int sp_addr;
+	unsigned int sp_size;
+	unsigned int sp;
+	unsigned int fp;
+	unsigned int gp;
+	unsigned int ret;
+	unsigned int base;
+} EXEC;
+
+typedef struct {
+	char header[8];
+	char pad[8];
+	EXEC params;
+	char license[64];
+	char pad2[1908];
+} PSEXE;
+
+int main(int argc, char** argv) {
+
+	char* in_file = NULL;
+	char* out_file = NULL;
+	int quiet = false;
+	int	i;
+	FILE* fp;
+	ELF_HEADER head;
+	PRG_HEADER prg_heads[MAX_prg_entry_count];
+	unsigned int exe_taddr = 0xffffffff;
+	unsigned int exe_haddr = 0;
+	unsigned int exe_tsize = 0;
+	unsigned char* binary;
+	PSEXE exe;
+	char *output_name;
+
+	for( i=1; i<argc; i++ ) {
+
+		if( strcasecmp( "-q", argv[i] ) == 0 ) {
+
+			quiet = true;
+
+		} else {
+
+			if( in_file == NULL ) {
+				in_file = argv[i];
+			} else if( out_file == NULL ) {
+				out_file = argv[i];
+			}
+
+		}
+
+	}
+
+	if( !quiet ) {
+		printf( "PSn00bSDK elf2x - ELF to PS-EXE Converter\n" );
+		printf( "2018-2019 Meido-Tek Productions\n\n" );
+	}
+
+	if( argc == 1 ) {
+		printf( "Usage:\n" );
+		printf( "  elf2x [-q] <elf_file> [exe_file]\n" );
+		return 0;
+	}
+
+	if( in_file == NULL ) {
+		printf( "No input file specified.\n" );
+		return EXIT_FAILURE;
+	}
+
+
+	fp = fopen( in_file, "rb" );
+
+	if( fp == NULL ) {
+		printf( "Cannot open file %s.\n", in_file );
+		return EXIT_FAILURE;
+	}
+
+	fread( &head, 1, sizeof(head), fp );
+
+
+	// Check header
+	if( head.magic != 0x464c457f ) {
+		printf( "File is not an ELF file.\n" );
+		return EXIT_FAILURE;
+	}
+
+	if( head.type != 2 ) {
+		printf( "Only executable ELF files are supported.\n" );
+		fclose( fp );
+		return EXIT_FAILURE;
+	}
+
+	if( head.instr_set != 8 ) {
+		printf( "ELF file is not a MIPS binary.\n" );
+		fclose( fp );
+		return EXIT_FAILURE;
+	}
+
+	if( head.word_size != 1 ) {
+		printf( "Only 32-bit ELF files are supported.\n" );
+		fclose( fp );
+		return EXIT_FAILURE;
+	}
+
+	if( head.endianness != 1 ) {
+		printf( "Only little endian ELF files are supported.\n" );
+		fclose( fp );
+		return EXIT_FAILURE;
+	}
+
+
+	// Load program headers and determine binary size and load address
+
+	fseek( fp, head.prg_head_pos, SEEK_SET );
+	for( i=0; i<head.prg_entry_count; i++ ) {
+
+		fread( &prg_heads[i], 1, sizeof(PRG_HEADER), fp );
+
+		if( prg_heads[i].flags == 4 ) {
+			continue;
+		}
+
+		if( prg_heads[i].p_vaddr < exe_taddr ) {
+			exe_taddr = prg_heads[i].p_vaddr;
+		}
+
+		if( prg_heads[i].p_vaddr > exe_haddr ) {
+			exe_haddr = prg_heads[i].p_vaddr;
+		}
+
+	}
+
+	exe_tsize = (exe_haddr-exe_taddr);
+	exe_tsize += prg_heads[head.prg_entry_count-1].p_filesz;
+
+	if( !quiet ) {
+
+		printf( "pc:%08x t_addr:%08x t_size:%d\n",
+			head.prg_entry_addr, exe_taddr, exe_tsize );
+
+	}
+
+	// Check if load address is appropriate in main RAM locations
+	if( ( ( exe_taddr>>24 ) == 0x0 ) || ( ( exe_taddr>>24 ) == 0x80 ) ||
+		( ( exe_taddr>>24 ) == 0xA0 ) ) {
+
+		if( ( exe_taddr&0x00ffffff ) < 65536 ) {
+
+			printf( "Warning: Program text address overlaps kernel area!\n" );
+
+		}
+
+	}
+
+
+	// Pad out the size to multiples of 2KB
+	exe_tsize = 2048*((exe_tsize+2047)/2048);
+
+	// Load the binary data
+	binary = (unsigned char*)malloc( exe_tsize );
+	memset( binary, 0x0, exe_tsize );
+
+	for( i=0; i<head.prg_entry_count; i++ ) {
+
+		if( prg_heads[i].flags == 4 ) {
+			continue;
+		}
+
+		fseek( fp, prg_heads[i].p_offset, SEEK_SET );
+		fread( &binary[(int)(prg_heads[i].p_vaddr-exe_taddr)],
+			1, prg_heads[i].p_filesz, fp );
+
+	}
+
+	fclose( fp );
+
+
+	if( out_file ) {
+
+		output_name = out_file;
+
+	} else {
+		char	*ptr;
+
+		// Generate output filename if no output is specified
+		output_name = in_file;
+
+		ptr = &output_name[strlen(output_name)];
+		while (ptr != output_name)
+		{
+			if (*ptr == '.')
+				break;
+			else
+				ptr--;
+		}
+
+		if (ptr != output_name)
+		{
+			strcpy(ptr, ".exe");
+		}
+		else
+		{
+			strcat(ptr, ".exe");
+		}
+	}
+
+
+	// Prepare PS-EXE header
+	memset( &exe, 0, sizeof(PSEXE) );
+
+	exe.params.sp_addr = 0x801FFFF0;
+	exe.params.t_addr = exe_taddr;
+	exe.params.t_size = exe_tsize;
+	exe.params.pc0 = head.prg_entry_addr;
+
+	strncpy( exe.header, "PS-X EXE", 8 );
+	strcpy( exe.license,
+		"Not Licensed or Endorsed by Sony Computer Entertainment Inc." );
+	strcpy( exe.pad2, "Built using GCC and PSn00bSDK libraries" );
+
+
+	// Write file
+	fp = fopen( output_name, "wb" );
+
+	if( !fp ) {
+		printf( "Cannot write output: %s\n", output_name );
+		free( binary );
+		fclose( fp );
+	}
+
+	fwrite( &exe, 1, sizeof( PSEXE ), fp );
+	fwrite( binary, 1, exe_tsize, fp );
+
+	fclose( fp );
+
+
+	free( binary );
+
+	return 0;
+}
+
diff --git a/tools/util/makefile b/tools/util/makefile
new file mode 100644
index 0000000..c49a581
--- /dev/null
+++ b/tools/util/makefile
@@ -0,0 +1,19 @@
+CFLAGS	= -O2 -s
+
+CC		= gcc
+
+ifeq "$(OS)" "Windows_NT"
+EXE_SUFFIX	= .exe
+else
+EXE_SUFFIX	=
+endif
+
+all:
+	$(CC) $(CFLAGS) elf2x.c -o elf2x$(EXE_SUFFIX)
+	
+install:
+	mkdir -p ../bin
+	cp elf2x$(EXE_SUFFIX) ../bin/elf2x$(EXE_SUFFIX)
+	
+clean:
+	rm -f elf2x$(EXE_SUFFIX)
-- 
cgit v1.2.3