Heap included as well in userland library

20 files changed, 167 insertions, 23 deletions

diff --git a/.gitignore b/.gitignore
index 2cf7152..4246a36 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.swp
 *.o
+*.uo
 Init.rfs
 Source/Kernel/Map.txt
 Source/Kernel/Melon.ke
diff --git a/Source/Applications/SampleApps/Makefile b/Source/Applications/SampleApps/Makefile
index d45011e..a632f87 100644
--- a/Source/Applications/SampleApps/Makefile
+++ b/Source/Applications/SampleApps/Makefile
@@ -7,7 +7,7 @@ CXX = g++
 CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I ../../Library/Common -I ../../Library/Interface -I ../../Library/Userland -D THIS_IS_MELON_USERLAND
 
 LD = ld
-LDFLAGS = --entry=start -Ttext=40000000
+LDFLAGS = -T ../../Library/Link.ld
 
 Applications = asmdemo cxxdemo
 
diff --git a/Source/Kernel/Devices/Floppy/FloppyController.class.h b/Source/Kernel/Devices/Floppy/FloppyController.class.h
index 2d0104b..a27d853 100644
--- a/Source/Kernel/Devices/Floppy/FloppyController.class.h
+++ b/Source/Kernel/Devices/Floppy/FloppyController.class.h
@@ -2,7 +2,7 @@
 #define DEF_FLOPPYCONTROLLER_CLASS_H
 
 #include <Devices/Device.proto.h>
-#include <TaskManager/Mutex.class.h>
+#include <Mutex.class.h>
 
 #define FLOPPY_DMALEN 0x4800	//This is one cylinder
 
diff --git a/Source/Kernel/Makefile b/Source/Kernel/Makefile
index a090ac6..1c83e5a 100644
--- a/Source/Kernel/Makefile
+++ b/Source/Kernel/Makefile
@@ -16,8 +16,6 @@ Objects = Core/loader.wtf.o \
 		Core/Sys.ns.o \
 		Core/Log.ns.o \
 		MemoryManager/Mem.ns.o \
-		MemoryManager/Heap.class.o \
-		MemoryManager/Heap-index.class.o \
 		MemoryManager/PhysMem.ns.o \
 		MemoryManager/GDT.wtf.o \
 		MemoryManager/GDT.ns.o \
@@ -31,7 +29,6 @@ Objects = Core/loader.wtf.o \
 		TaskManager/Thread.class.o \
 		TaskManager/Task.ns.o \
 		TaskManager/Task.wtf.o \
-		TaskManager/Mutex.class.o \
 		VTManager/VirtualTerminal.proto.o \
 		VTManager/SimpleVT.class.o \
 		VTManager/ScrollableVT.class.o \
@@ -52,6 +49,9 @@ Objects = Core/loader.wtf.o \
 		../Library/Common/WChar.class.o \
 		../Library/Common/Rand.ns.o \
 		../Library/Common/CMem.ns.o \
+		../Library/Common/Heap.class.o \
+		../Library/Common/Heap-index.class.o \
+		../Library/Common/Mutex.class.o \
 		VFS/Partition.class.o \
 		VFS/Part.ns.o \
 		VFS/VFS.ns.o \
@@ -95,6 +95,7 @@ clean:
 	rm -rf *.o
 	rm -rf */*.o
 	rm -rf */*/*.o
+	rm -rf ../Library/Common/*.o
  
 mrproper: clean
 	echo "* Removing executable : $(OutFile)"
diff --git a/Source/Kernel/MemoryManager/Mem.ns.cpp b/Source/Kernel/MemoryManager/Mem.ns.cpp
index 6c64a53..c705b3b 100644
--- a/Source/Kernel/MemoryManager/Mem.ns.cpp
+++ b/Source/Kernel/MemoryManager/Mem.ns.cpp
@@ -1,6 +1,6 @@
 #include <common.h>
 #include <MemoryManager/PhysMem.ns.h>
-#include <MemoryManager/Heap.class.h>
+#include <Heap.class.h>
 
 namespace Mem {
 
diff --git a/Source/Kernel/TaskManager/Process.class.cpp b/Source/Kernel/TaskManager/Process.class.cpp
index 39428b4..aae8fce 100644
--- a/Source/Kernel/TaskManager/Process.class.cpp
+++ b/Source/Kernel/TaskManager/Process.class.cpp
@@ -57,6 +57,7 @@ Process* Process::run(String filename, FSNode* cwd, u32int uid) {
 Process::Process(String cmdline, u32int uid) : Ressource(PR_IFACE_OBJTYPE) {
 	addCall0(PR_IFACE_EXIT, (call0)&Process::exitSC);
 	addCall1(PR_IFACE_ALLOCPAGE, (call1)&Process::allocPageSC);
+	addCall1(PR_IFACE_FREEPAGE, (call1)&Process::freePageSC);
 	m_pid = Task::nextPid();
 	m_cmdline = cmdline;
 	m_retval = 0;
@@ -150,3 +151,11 @@ u32int Process::allocPageSC(u32int pos) {
 	m_pagedir->allocFrame(pos, true, true);
 	return 0;
 }
+
+u32int Process::freePageSC(u32int pos) {
+	if (Task::currProcess() != this) return 1;
+	if ((pos & 0x00000FFF) != 0) pos = (pos & 0xFFFFF000) + 0x1000;
+	if (pos >= 0xC0000000) return 1;
+	m_pagedir->freeFrame(pos);
+	return 0;
+}
diff --git a/Source/Kernel/TaskManager/Process.class.h b/Source/Kernel/TaskManager/Process.class.h
index 1b614b7..afdfe20 100644
--- a/Source/Kernel/TaskManager/Process.class.h
+++ b/Source/Kernel/TaskManager/Process.class.h
@@ -5,7 +5,7 @@
 #include <Vector.class.h>
 #include <SimpleList.class.h>
 #include <MemoryManager/PageDirectory.class.h>
-#include <MemoryManager/Heap.class.h>
+#include <Heap.class.h>
 #include <VTManager/VirtualTerminal.proto.h>
 #include <VFS/File.class.h>
 
@@ -72,6 +72,7 @@ class Process : public Ressource {
 	//System calls
 	u32int exitSC();
 	u32int allocPageSC(u32int);
+	u32int freePageSC(u32int);
 };
 
 #endif
diff --git a/Source/Kernel/TaskManager/Task.wtf.asm b/Source/Kernel/TaskManager/Task.wtf.asm
index 36c1ade..9f27bec 100644
--- a/Source/Kernel/TaskManager/Task.wtf.asm
+++ b/Source/Kernel/TaskManager/Task.wtf.asm
@@ -9,13 +9,6 @@ idle_task:
 	hlt
 	jmp idle_task
 
-[GLOBAL atomic_exchange]
-atomic_exchange:
-   mov ecx, [esp+4]		; Get lock address
-   mov eax, [esp+8]		; Get new value
-   xchg eax, [ecx]		; Old value goes in eax
-   ret
-
 [GLOBAL copy_page_physical]
 copy_page_physical:
    push ebx              ; According to __cdecl, we must preserve the contents of EBX.
diff --git a/Source/Kernel/VTManager/VirtualTerminal.proto.h b/Source/Kernel/VTManager/VirtualTerminal.proto.h
index 487233d..b9d0eb8 100644
--- a/Source/Kernel/VTManager/VirtualTerminal.proto.h
+++ b/Source/Kernel/VTManager/VirtualTerminal.proto.h
@@ -3,7 +3,7 @@
 
 #include <common.h>
 #include <String.class.h>
-#include <TaskManager/Mutex.class.h>
+#include <Mutex.class.h>
 #include <DeviceManager/Kbd.ns.h>
 #include <Vector.class.h>
 
diff --git a/Source/Kernel/MemoryManager/Heap-index.class.cpp b/Source/Library/Common/Heap-index.class.cpp
index 3280736..3280736 100644
--- a/Source/Kernel/MemoryManager/Heap-index.class.cpp
+++ b/Source/Library/Common/Heap-index.class.cpp
diff --git a/Source/Kernel/MemoryManager/Heap.class.cpp b/Source/Library/Common/Heap.class.cpp
index 365b4f0..34e4dc4 100644
--- a/Source/Kernel/MemoryManager/Heap.class.cpp
+++ b/Source/Library/Common/Heap.class.cpp
@@ -1,7 +1,19 @@
 #include "Heap.class.h"
-#include <MemoryManager/PageDirectory.class.h>
 
+#ifdef THIS_IS_MELON_KERNEL
+#include <MemoryManager/PageDirectory.class.h>
+#define ALLOC(x) m_pagedir->allocFrame(x, m_user, m_rw)
+#define FREE(x) m_pagedir->freeFrame(x)
+#else
+#define ALLOC(x) m_process.allocPage(x)
+#define FREE(x) m_process.freePage(x)
+#endif
+
+#ifdef THIS_IS_MELON_KERNEL
 Heap::Heap() : m_mutex(MUTEX_FALSE) {
+#else
+Heap::Heap() : m_mutex(MUTEX_FALSE), m_process(Process::get()) {
+#endif
 	m_usable = false;
 	m_index.data = 0;
 	m_index.size = 0;
@@ -11,7 +23,11 @@ Heap::~Heap() {
 	//TODO (optionnal) : free pages.
 }
 
+#ifdef THIS_IS_MELON_KERNEL
 void Heap::create(u32int start, u32int size, u32int idxsize, PageDirectory* pagedir, bool user, bool rw) {
+#else
+void Heap::create(u32int start, u32int size, u32int idxsize) {
+#endif
 	if (m_usable) return;
 
 	if (start & 0x0FFF) start = (start & 0xFFFFF000) + 0x1000;
@@ -19,15 +35,19 @@ void Heap::create(u32int start, u32int size, u32int idxsize, PageDirectory* page
 	m_start = start + idxsize;	//m_start is start of real data, start is start of index.
 	m_end = start + size;
 
+#ifdef THIS_IS_MELON_KERNEL
 	m_pagedir = pagedir;
 	m_user = user;
 	m_rw = rw;
+#endif
 	
 	//Allocate frames for heap
 	for (u32int i = start ; i < m_end; i += 0x1000) {
-		m_pagedir->allocFrame(i, m_user, m_rw);
+		ALLOC(i);
 	}
+#ifdef THIS_IS_MELON_KERNEL
 	m_pagedir->switchTo();
+#endif
 
 	m_index.data = (heap_header_t **)start;		//Set index start. start == start of all heap
 	m_index.size = 0;
@@ -56,7 +76,7 @@ void Heap::expand(u32int quantity) {
 	u32int newEnd = m_end + quantity;
 
 	for (u32int i = m_end; i < newEnd; i++) {
-		m_pagedir->allocFrame(i, m_user, m_rw);
+		ALLOC(i);
 	}
 
 	heap_footer_t *last_footer = (heap_footer_t*) (m_end - sizeof(heap_footer_t));
@@ -111,7 +131,7 @@ void Heap::contract() {	//Automatically work out how much we can contract
 	insertIntoIndex(last_header);
 
 	for (u32int i = newEnd; i < m_end; i += 0x1000) {
-		m_pagedir->freeFrame(i);
+		FREE(i);
 	}
 
 	m_end = newEnd;
diff --git a/Source/Kernel/MemoryManager/Heap.class.h b/Source/Library/Common/Heap.class.h
index 291c9ce..f5895c7 100644
--- a/Source/Kernel/MemoryManager/Heap.class.h
+++ b/Source/Library/Common/Heap.class.h
@@ -2,7 +2,7 @@
 #define DEF_HEAP_CLASS_H
 
 #include <common.h>
-#include <TaskManager/Mutex.class.h>
+#include <Mutex.class.h>
 
 //Heap minimum size : 2M
 #define HEAP_MIN_SIZE 0x00200000
@@ -25,14 +25,23 @@ struct heap_index_t {
 	u32int size;
 };
 
+#ifdef THIS_IS_MELON_KERNEL
 class PageDirectory;
+#else
+#include <Binding/Process.class.h>
+#endif
 
 class Heap {
 	private:
-	bool m_usable, m_user, m_rw;
 	u32int m_free, m_start, m_end;
+	bool m_usable;
 	heap_index_t m_index;
+#ifdef THIS_IS_MELON_KERNEL
+	bool m_user, m_rw;
 	PageDirectory* m_pagedir;
+#else
+	Process m_process;
+#endif
 
 	Mutex m_mutex;
 
@@ -48,7 +57,11 @@ class Heap {
 	Heap();
 	~Heap();
 
+#ifdef THIS_IS_MELON_KERNEL
 	void create(u32int start, u32int size, u32int idxsize, PageDirectory* pagedir, bool user, bool rw);
+#else
+	void create(u32int start, u32int size, u32int idxsize);
+#endif
 
 	void* alloc(u32int sz, bool no_expand = false);
 	void free(void* ptr);
diff --git a/Source/Kernel/TaskManager/Mutex.class.cpp b/Source/Library/Common/Mutex.class.cpp
index 8ba274f..2e9a63c 100644
--- a/Source/Kernel/TaskManager/Mutex.class.cpp
+++ b/Source/Library/Common/Mutex.class.cpp
@@ -1,7 +1,18 @@
 #include "Mutex.class.h"
+
+#ifdef THIS_IS_MELON_KERNEL
 #include <TaskManager/Task.ns.h>
+#endif
+
+#ifdef THIS_IS_MELON_USERLAND
+#include <Binding/Thread.class.h>
+#endif
 
-extern "C" u32int atomic_exchange(u32int* ptr, u32int newval);
+u32int atomic_exchange(u32int* ptr, u32int newval) {
+	u32int r;
+	asm volatile("xchg (%%ecx), %%eax" : "=a"(r) : "c"(ptr), "a"(newval));
+	return r;
+}
 
 Mutex::Mutex(u32int locked) {
 	m_locked = locked;
@@ -14,8 +25,14 @@ bool Mutex::lock() {
 
 void Mutex::waitLock() {
 	while (atomic_exchange(&m_locked, MUTEX_TRUE) == MUTEX_TRUE) {
+#ifdef THIS_IS_MELON_KERNEL
 		if (Task::currThread() != 0) Task::currThread()->sleep(10);	//Wait 10ms
 		else return;
+#endif
+
+#ifdef THIS_IS_MELON_USERLAND
+		Thread::get().sleep(10);
+#endif
 	}
 }
 
diff --git a/Source/Kernel/TaskManager/Mutex.class.h b/Source/Library/Common/Mutex.class.h
index 1e3f63d..1e3f63d 100644
--- a/Source/Kernel/TaskManager/Mutex.class.h
+++ b/Source/Library/Common/Mutex.class.h
diff --git a/Source/Library/Interface/Process.iface.h b/Source/Library/Interface/Process.iface.h
index d639725..0956679 100644
--- a/Source/Library/Interface/Process.iface.h
+++ b/Source/Library/Interface/Process.iface.h
@@ -4,5 +4,6 @@
 #define PR_IFACE_OBJTYPE 0x20
 #define PR_IFACE_EXIT 0x01
 #define PR_IFACE_ALLOCPAGE 0x02
+#define PR_IFACE_FREEPAGE 0x03
 
 #endif
diff --git a/Source/Library/Link.ld b/Source/Library/Link.ld
new file mode 100644
index 0000000..f06f568
--- /dev/null
+++ b/Source/Library/Link.ld
@@ -0,0 +1,32 @@
+ENTRY (start)
+
+SECTIONS{
+    . = 0x10000000;
+
+    .text : {
+        *(.text)
+    }
+
+    .rodata ALIGN (0x1000)  :{
+        *(.rodata)
+    }
+
+    .data ALIGN (0x1000) : {
+		start_ctors = .;
+		*(.ctor*)
+		end_ctors = .;
+		start_dtors = .;
+		*(.dtor*)
+		end_dtors = .;
+        *(.data)
+    }
+
+    .bss : {
+        sbss = .;
+        *(COMMON)
+        *(.bss)
+        ebss = .;
+    }
+
+	end = .; _end = .; __end = .;
+}
diff --git a/Source/Library/Makefile b/Source/Library/Makefile
index b9be0a0..028e7a4 100644
--- a/Source/Library/Makefile
+++ b/Source/Library/Makefile
@@ -1,7 +1,10 @@
 .PHONY: clean, mrproper
 
 CXX = g++
-CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I Common -I Userland -D THIS_IS_MELON_USERLAND
+CXXFLAGS = -nostartfiles -nostdlib -fno-exceptions -fno-rtti -I Common -I Userland -I Interface -D THIS_IS_MELON_USERLAND
+
+ASM = nasm
+ASMFLAGS = -f elf
 
 LDFLAGS = -r
 LD = ld
@@ -9,6 +12,9 @@ LD = ld
 Library = Melon.o
 Objects = Common/WChar.class.uo \
 		  Common/CMem.ns.uo \
+		  Common/Mutex.class.uo \
+		  Common/Heap.class.uo \
+		  Common/Heap-index.class.uo \
 		  Userland/Syscall/Syscall.wtf.uo \
 		  Userland/Syscall/RessourceCaller.class.uo \
 		  Userland/Start.uo
@@ -26,6 +32,10 @@ $(Library): $(Objects)
 	echo "* Compiling $<..."
 	$(CXX) $(CXXFLAGS) -c $< -o $@
 
+%.uo: %.asm
+	echo "* Compiling $<..."
+	$(ASM) $(ASMFLAGS) $< -o $@
+
 clean:
 	echo "* Removing object files..."
 	rm -rf $(Objects)
diff --git a/Source/Library/Userland/Binding/Process.class.h b/Source/Library/Userland/Binding/Process.class.h
index c484e19..88af9d6 100644
--- a/Source/Library/Userland/Binding/Process.class.h
+++ b/Source/Library/Userland/Binding/Process.class.h
@@ -16,4 +16,7 @@ class Process : public RessourceCaller {
 	void allocPage(u32int pos) {
 		doCall(PR_IFACE_ALLOCPAGE, pos);
 	}
+	void freePage(u32int pos) {
+		doCall(PR_IFACE_FREEPAGE, pos);
+	}
 };
diff --git a/Source/Library/Userland/Start.cpp b/Source/Library/Userland/Start.cpp
index 02eb951..e185189 100644
--- a/Source/Library/Userland/Start.cpp
+++ b/Source/Library/Userland/Start.cpp
@@ -1,8 +1,35 @@
 #include <types.h>
 
+#include <Heap.class.h>
+
+extern "C" void __cxa_pure_virtual() {}	//Required when using abstract classes
+void *__dso_handle;		//Required when using global objects
+extern "C" int __cxa_atexit(void (*f)(void*), void *p, void *d) { return 0; }
+
+extern u32int start_ctors, end_ctors, start_dtors, end_dtors;
+
+Heap heap;
+
 int main();
 
 extern "C" void start() {
+	//Call static constructors
+    for(u32int * call = &start_ctors; call < &end_ctors; call++) {
+        ((void (*)(void))*call)();
+    }
+
+	heap.create(0x40000000, 0x00100000, 0x00003000);	//Initially create a 1M heap with 12ko index
 	u32int r = main();
+
+	//Call static destructors 
+    for(u32int * call = &start_dtors; call < &end_dtors; call++) {
+        ((void (*)(void))*call)();
+    }
+
 	asm volatile("int $66" : : "a"(r));
 }
+
+namespace Mem {
+	void* alloc (u32int sz) { return heap.alloc(sz); }
+	void free(void* ptr) { heap.free(ptr); }
+}
diff --git a/Source/Library/Userland/common.h b/Source/Library/Userland/common.h
index 27218f7..3508513 100644
--- a/Source/Library/Userland/common.h
+++ b/Source/Library/Userland/common.h
@@ -7,4 +7,20 @@
 
 #include <CMem.ns.h>
 
+namespace Mem {
+	void* alloc(u32int);
+	void free(void*);
+}
+
+//Standard implemenations of operator new/delete
+inline void* operator new(u32int, void *p) { return p; }
+inline void* operator new[](u32int, void *p) { return p; }
+inline void operator delete(void*, void*) { }
+inline void operator delete[](void*, void*) { }
+
+inline void* operator new(u32int sz) { return Mem::alloc(sz); }
+inline void* operator new[](u32int sz) { return Mem::alloc(sz); }
+inline void operator delete(void *ptr) { Mem::free(ptr); }
+inline void operator delete[](void *ptr) { Mem::free(ptr); }
+
 #endif