IMP: Working on Paging API...

FIX: Fixed the path of filesystem's ESP.

Signed-off-by: Amlal <amlal@el-mahrouss-logic.com>

8 files changed, 291 insertions, 0 deletions

diff --git a/dev/ddk/src/KernelAlloc.c b/dev/ddk/src/KernelAlloc.c
new file mode 100644
index 00000000..af99f23b
--- /dev/null
+++ b/dev/ddk/src/KernelAlloc.c
@@ -0,0 +1,36 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK allocator.
+
+------------------------------------------- */
+
+#include <ddk/KernelStd.h>
+
+/**
+	\brief Allocates a new heap on the Kernel's side.
+	\param sz the size of the heap block.
+	\return the newly allocated pointer.
+*/
+DK_EXTERN void* KernelAlloc(size_t sz)
+{
+	if (!sz)
+		++sz;
+
+	void* ptr = KernelCall("MmNewKeHeap", 1, &sz, sizeof(size_t));
+
+	return ptr;
+}
+
+/**
+	\brief Frees a pointer from the heap.
+	\param ptr the pointer to free.
+*/
+DK_EXTERN void KernelFree(void* ptr)
+{
+	if (!ptr)
+		return;
+
+	KernelCall("MmDeleteKeHeap", 1, ptr, 0);
+}
diff --git a/dev/ddk/src/KernelCall.c b/dev/ddk/src/KernelCall.c
new file mode 100644
index 00000000..ccb401af
--- /dev/null
+++ b/dev/ddk/src/KernelCall.c
@@ -0,0 +1,60 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK Kernel call.
+
+------------------------------------------- */
+
+#include <ddk/KernelStd.h>
+#include <stdarg.h>
+
+/// @brief this is an internal call, do not use it.
+DK_EXTERN ATTRIBUTE(naked) void* __KernelCallDispatch(const char* name, int32_t cnt, void* data, size_t sz);
+
+/// @brief Interupt Kernel
+/// @param KernelRpcName RPC name
+/// @param cnt number of elements in **data** pointer.
+/// @param data data pointer.
+/// @param sz The size of the whole data pointer.
+/// @retval void* Kernel call was successful.
+/// @retval nil Kernel call failed, call KernelLastError(void)
+DK_EXTERN void* KernelCall(const char* name, int32_t cnt, void* data, size_t sz)
+{
+	if (!name || *name == 0 || cnt == 0)
+		return nil;
+
+	return __KernelCallDispatch(name, cnt, data, sz);
+}
+
+/// @brief Add system call.
+/// @param slot system call slot
+/// @param slotFn, syscall slot.
+DK_EXTERN void KernelAddSyscall(const int slot, void (*slotFn)(void* a0))
+{
+	KernelCall("IntAddSyscall", slot, slotFn, 1);
+}
+
+/// @brief Get a Kernel property.
+/// @param slot property id (always 0)
+/// @param name the object's name.
+/// @return Object manifest.
+DK_EXTERN struct DDK_OBJECT_MANIFEST* KernelGetObject(const int slot, const char* name)
+{
+	struct DDK_OBJECT_MANIFEST* manifest = (struct DDK_OBJECT_MANIFEST*)KernelCall("RtlGetObject", slot, (void*)name, 1);
+
+	if (!manifest)
+		return nil;
+
+	return manifest;
+}
+
+/// @brief Set a Kernel property.
+/// @param slot property id (always 0)
+/// @param name the object's name.
+/// @param ddk_pr pointer to a object's DDK_OBJECT_MANIFEST.
+/// @return property's object.
+DK_EXTERN void* KernelSetObject(const int slot, const struct DDK_OBJECT_MANIFEST* ddk_pr)
+{
+	return KernelCall("RtlSetObject", slot, (void*)ddk_pr, 1);
+}
diff --git a/dev/ddk/src/KernelCallDispatch.S b/dev/ddk/src/KernelCallDispatch.S
new file mode 100644
index 00000000..3a9a57b5
--- /dev/null
+++ b/dev/ddk/src/KernelCallDispatch.S
@@ -0,0 +1,36 @@
+/**
+ lang: asm
+ compiler: gnu
+ */
+
+.globl __KernelCallDispatch
+
+.text
+
+/* Really simple function, takes our va-list,
+    and brings it to the trap handler in the Kernel. */
+
+#ifdef __DDK_AMD64__
+
+/* args rcx, rdx, r8, r9 */
+__KernelCallDispatch:
+    int $0x33
+    ret
+
+#elif defined(__DDK_POWER64__)
+
+/* args r8, r9, r10, r11 */
+__KernelCallDispatch:
+    /* There is no specific interrupt request id for a system call in POWER. */
+    sc
+    blr
+
+#elif defined(__DDK_ARM64__)
+
+/* args x0, x8, x9, x10, x11 is kept to tell that this is a Kernel call */
+__KernelCallDispatch:
+    /* There is no specific interrupt request id for a system call in ARM64 as well. */
+    mov x9, #0x33
+    svc #0
+
+#endif
diff --git a/dev/ddk/src/KernelCxxRt.cxx b/dev/ddk/src/KernelCxxRt.cxx
new file mode 100644
index 00000000..947e2de7
--- /dev/null
+++ b/dev/ddk/src/KernelCxxRt.cxx
@@ -0,0 +1,29 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK C++ runtime.
+
+------------------------------------------- */
+
+#include <ddk/KernelStd.h>
+
+void* operator new(size_t sz)
+{
+	return KernelAlloc(sz);
+}
+
+void operator delete(void* ptr)
+{
+	KernelFree(ptr);
+}
+
+void* operator new[](size_t sz)
+{
+	return KernelAlloc(sz);
+}
+
+void operator delete[](void* ptr)
+{
+	KernelFree(ptr);
+}
diff --git a/dev/ddk/src/KernelDev.c b/dev/ddk/src/KernelDev.c
new file mode 100644
index 00000000..3cf7ed48
--- /dev/null
+++ b/dev/ddk/src/KernelDev.c
@@ -0,0 +1,29 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK Text I/O.
+
+------------------------------------------- */
+
+#include <ddk/KernelDev.h>
+#include <ddk/KernelString.h>
+
+/// @brief Open a new binary device from path.
+DK_EXTERN KERNEL_DEVICE_PTR KernelOpenDevice(const char* devicePath)
+{
+	if (!devicePath)
+		return nil;
+
+	return KernelCall("ZkOpenDevice", 1, (void*)devicePath, KernelStringLength(devicePath));
+}
+
+/// @brief Close any device.
+/// @param device valid device.
+DK_EXTERN void KernelCloseDevice(KERNEL_DEVICE_PTR device)
+{
+	if (!device)
+		return;
+
+	KernelCall("ZkCloseDevice", 1, device, sizeof(KERNEL_DEVICE));
+}
diff --git a/dev/ddk/src/KernelPrint.c b/dev/ddk/src/KernelPrint.c
new file mode 100644
index 00000000..7f8c8604
--- /dev/null
+++ b/dev/ddk/src/KernelPrint.c
@@ -0,0 +1,37 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK Text I/O.
+
+------------------------------------------- */
+
+#include <ddk/KernelPrint.h>
+
+DK_EXTERN void KernelPrintChar(const char ch)
+{
+	char assembled[2] = {0};
+	assembled[0]	  = ch;
+	assembled[1]	  = 0;
+
+	KernelCall("SrWriteCharacter", 1, assembled, 1);
+}
+
+/// @brief print string to UART.
+/// @param message UART to transmit.
+DK_EXTERN void KernelPrintStr(const char* message)
+{
+	if (!message)
+		return;
+	if (*message == 0)
+		return;
+
+	size_t index = 0;
+	size_t len	 = KernelStringLength(message);
+
+	while (index < len)
+	{
+		KernelPrintChar(message[index]);
+		++index;
+	}
+}
diff --git a/dev/ddk/src/KernelString.c b/dev/ddk/src/KernelString.c
new file mode 100644
index 00000000..0030aa02
--- /dev/null
+++ b/dev/ddk/src/KernelString.c
@@ -0,0 +1,39 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+	Purpose: DDK Strings.
+
+------------------------------------------- */
+
+#include <ddk/KernelString.h>
+
+DK_EXTERN size_t KernelStringLength(const char* in)
+{
+	if (in == nil)
+		return 0;
+	if (*in == 0)
+		return 0;
+
+	size_t index = 0;
+
+	while (in[index] != 0)
+	{
+		++index;
+	}
+
+	return index;
+}
+
+DK_EXTERN int KernelStringCopy(char* dst, const char* src, size_t len)
+{
+	size_t index = 0;
+
+	while (index != len)
+	{
+		dst[index] = src[index];
+		++index;
+	}
+
+	return index;
+}
diff --git a/dev/ddk/src/KernelVersion.c b/dev/ddk/src/KernelVersion.c
new file mode 100644
index 00000000..c40e8ff9
--- /dev/null
+++ b/dev/ddk/src/KernelVersion.c
@@ -0,0 +1,25 @@
+/* -------------------------------------------

+

+	Copyright ZKA Technologies.

+

+	Purpose: DDK versioning.

+

+------------------------------------------- */

+

+#include <KernelStd.h>

+

+#ifndef cDDKVersionHighest

+#define cDDKVersionHighest 1

+#endif // !cDDKVersionHighest

+

+#ifndef cDDKVersionLowest

+#define cDDKVersionLowest 1

+#endif // !cDDKVersionLowest

+

+#ifndef cDDKVersion

+#define cDDKVersion 1

+#endif // !cDDKVersion

+

+int32_t c_api_version_highest = cDDKVersionHighest;

+int32_t c_api_version_least	  = cDDKVersionLowest;

+int32_t c_api_version		  = cDDKVersion;