Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

sdk/lib/rossym_new/pe.c

@@ -0,0 +1,129 @@
+#include <precomp.h>
+
+#define NDEBUG
+#include <debug.h>
+
+PeSect *pesection(Pe *pe, const char *name) 
+{
+	int i;
+	ANSI_STRING WantName;
+	RtlInitAnsiString(&WantName, name);
+	werrstr("Searching for section %s\n", name);
+	for (i = 0; i < pe->nsections; i++) {
+		PANSI_STRING AnsiString = ANSI_NAME_STRING(&pe->sect[i]);
+		if (WantName.Length == AnsiString->Length &&
+			!memcmp(AnsiString->Buffer, name, WantName.Length)) {
+			werrstr("Found %s (%d) @ %x (%x)\n", name, i, 
+				   ((PCHAR)pe->imagebase)+pe->sect[i].VirtualAddress,
+				   pe->sect[i].SizeOfRawData);
+			return &pe->sect[i];
+		}
+	}
+	werrstr("%s not found\n", name);
+	return nil;
+}
+
+u16int peget2(const unsigned char *ptr) {
+	return *((u16int*)ptr);
+}
+
+u32int peget4(const unsigned char *ptr) {
+	return *((u32int*)ptr);
+}
+
+u64int peget8(const unsigned char *ptr) {
+	return *((u64int*)ptr);
+}
+
+int readn(void *filectx, char *buffer, ulong size) {
+	return RosSymReadFile(filectx, buffer, size);
+}
+
+int seek(void *filectx, ulong position, int origin) {
+	assert(origin == 0);
+	return RosSymSeekFile(filectx, position);
+}
+
+static int
+readblock(void *fd, DwarfBlock *b, ulong off, ulong len)
+{
+	b->data = malloc(len);
+	if(b->data == nil)
+		return -1;
+	if(!seek(fd, off, 0) || !readn(fd, (char *)b->data, len)){
+		free(b->data);
+		b->data = nil;
+		return -1;
+	}
+	b->len = len;
+	return 0;
+}
+
+int
+loaddisksection(Pe *pe, char *name, DwarfBlock *b)
+{
+	PeSect *s;
+	if((s = pesection(pe, name)) == nil)
+		return -1;
+	return readblock(pe->fd, b, s->PointerToRawData, s->SizeOfRawData);
+}
+
+int
+loadmemsection(Pe *pe, char *name, DwarfBlock *b)
+{
+	PeSect *s;
+
+	if((s = pesection(pe, name)) == nil)
+		return -1;
+	werrstr("Loading section %s (ImageBase %x RVA %x)\n", name, pe->fd, s->VirtualAddress);
+	b->data = RosSymAllocMem(s->SizeOfRawData);
+	b->len = s->SizeOfRawData;
+	PCHAR DataSource = ((char *)pe->fd) + s->VirtualAddress;
+	werrstr("Copying to %x from %x (%x)\n", DataSource, b->data, b->len);
+	RtlCopyMemory(b->data, DataSource, s->SizeOfRawData);
+	
+	return s->SizeOfRawData;
+}
+
+void *RosSymAllocMemZero(ulong size, ulong count) {
+	void *res = RosSymAllocMem(size * count);
+	if (res) memset(res, 0, size * count);
+	return res;
+}
+
+int GetStrnlen(const char *string, int maxlen) {
+	int i;
+	for (i = 0; i < maxlen && string[i]; i++);
+	return i;
+}
+
+void pefree(Pe *pe) {
+	int i;
+	for (i = 0; i < pe->nsections; i++) {
+		RtlFreeAnsiString(ANSI_NAME_STRING(&pe->sect[i]));
+	}
+	free(pe->sect);
+	free(pe);
+}
+
+void xfree(void *v) {
+	if (v) RosSymFreeMem(v);
+}
+
+ulong pefindrva(struct _IMAGE_SECTION_HEADER *SectionHeaders, int NumberOfSections, ulong TargetPhysical) {
+	int i;
+	werrstr("Finding RVA for Physical %x\n", TargetPhysical);
+	for (i = 0; i < NumberOfSections; i++) {
+		werrstr("Section %d name %s Raw %x Virt %x\n",
+			   i, 
+			   ANSI_NAME_STRING(&SectionHeaders[i])->Buffer, 
+			   SectionHeaders[i].PointerToRawData,
+			   SectionHeaders[i].VirtualAddress);
+		if (TargetPhysical >= SectionHeaders[i].PointerToRawData && 
+			TargetPhysical < SectionHeaders[i].PointerToRawData + SectionHeaders[i].SizeOfRawData) {
+			werrstr("RVA %x\n", TargetPhysical - SectionHeaders[i].PointerToRawData + SectionHeaders[i].VirtualAddress);
+			return TargetPhysical - SectionHeaders[i].PointerToRawData + SectionHeaders[i].VirtualAddress;
+		}
+	}
+	return nil;
+}