Adding PSx-Patcher to the tree.

1 files changed, 144 insertions, 0 deletions

diff --git a/lib/binwriter-elf.cpp b/lib/binwriter-elf.cpp
new file mode 100644
index 0000000..81755d7
--- /dev/null
+++ b/lib/binwriter-elf.cpp
@@ -0,0 +1,144 @@
+/*
+ *  PSX-Tools Bundle Pack
+ *  Copyright (C) 2002-2005 Nicolas "Pixel" Noble
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* $Id: binwriter-elf.cpp,v 1.1 2005-12-02 11:28:27 pixel Exp $ */
+
+#include "binwriter-elf.h"
+#include "binary-elf.h"
+
+#ifdef WORDS_BIGENDIAN
+static void sw32(u32 & x) {
+    x = (x >> 24) | ((x >> 8) & 0x0000ff00) | ((x << 8) & 0x00ff0000) | (x << 24);
+}
+static void sw16(u16 & x) {
+    x = (x >> 8) | ((x << 8);
+}
+#else
+#define sw32(x) while(0)
+#define sw16(x) while(0)
+#endif
+
+static u8 elf_ident[] = {
+    0x7F, 0x45, 0x4C, 0x46, 0x01, 0x01, 0x01, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+// works only with align == 2^n
+static Uint32 align_it(Uint32 address, int align) {
+    if (address & (--align)) {
+        address |= align;
+        address++;
+    }
+
+    return address;
+}
+
+void BinWriter_elf::dump(Handle * elf) {
+    struct elf_header_t weh;
+    struct elf_pheader_t weph;
+    int i;
+    std::vector<struct SectionOut>::iterator iter;
+    Uint32 offset = 0x1000;
+
+    for (i = 0; i < 16; i++) {
+	weh.e_ident.raw[i] = elf_ident[i];
+    }
+    weh.e_type = 2;
+    weh.e_machine = 8;
+    weh.e_version = 1;
+    weh.e_phoff = sizeof(weh);
+    weh.e_shoff = 0;
+    weh.e_flags = 0;
+    weh.e_ehsize = sizeof(weh);
+    weh.e_phentsize = sizeof(weph);
+    weh.e_phnum = sections.size();
+    weh.e_shoff = 0;
+    weh.e_shnum = 0;
+    weh.e_shentsize = 0;
+    weh.e_entry = epc;
+    weh.e_shstrndx = 0;
+
+    sw16(weh.e_type);
+    sw16(weh.e_machine);
+    sw32(weh.e_version);
+    sw32(weh.e_entry);
+    sw32(weh.e_phoff);
+    sw32(weh.e_shoff);
+    sw32(weh.e_flags);
+    sw16(weh.e_ehsize);
+    sw16(weh.e_phentsize);
+    sw16(weh.e_phnum);
+    sw16(weh.e_shentsize);
+    sw16(weh.e_shnum);
+    sw16(weh.e_shstrndx);
+    
+    elf->write(&weh, sizeof(weh));
+
+
+    for (iter = sections.begin(); iter != sections.end(); iter++) {
+        weph.type = PT_LOAD;
+        weph.flags = PF_R | PF_W | PF_X;
+        weph.offset = offset;
+        weph.vaddr = iter->base;
+        weph.paddr = iter->base;
+        weph.filesz = iter->real_size;
+        weph.memsz = iter->whole_size;
+        weph.align = 0x1000;
+
+        offset += iter->real_size;
+        offset = align_it(offset, 0x1000);
+
+        sw32(weph.type);
+        sw32(weph.flags);
+        sw32(weph.offset);
+        sw32(weph.vaddr);
+        sw32(weph.paddr);
+        sw32(weph.filesz);
+        sw32(weph.memsz);
+        sw32(weph.align);
+
+        elf->write(&weph, sizeof(weph));
+    }
+
+    offset = 0x1000;
+
+    for (iter = sections.begin(); iter != sections.end(); iter++) {
+        elf->seek(offset);
+        if (iter->data) {
+            elf->write(iter->data, iter->real_size);
+            offset += iter->real_size;
+        } else {
+            offset++;
+        }
+        offset = align_it(offset, 0x1000);
+    }
+}
+
+#if 0
+static Uint32 elf_hash(const unsigned char * name) {
+    Uint31 h = 0, g;
+
+    while (*name) {
+        h = (h << 4) + *name++;
+        if ((g = h & 0xf0000000)
+            h ^= g >> 24;
+        h &= ~g;
+    }
+}
+#endif