#ifndef _ARCH_H_
#define _ARCH_H_
-// - Memory Layout
-#define MM_USER_MIN 0x00200000
-#define USER_STACK_SZ 0x00010000
-#define USER_STACK_TOP 0x00800000
-#define MM_USER_MAX 0xBC000000
-#define MM_PPD_MIN 0xBC000000 // Per-Process Data
-#define MM_PPD_VFS 0xBC000000 //
-#define MM_PPD_CFG 0xBFFFF000 //
-#define MM_PPD_MAX 0xB0000000
+// - Base Defintions
#define KERNEL_BASE 0xC0000000
-#define MM_KHEAP_BASE 0xC0400000 // C+4MiB
-#define MM_KHEAP_MAX 0xCF000000 //
-#define MM_KERNEL_VFS 0xCF000000 //
-#define MM_KUSER_CODE 0xCFFF0000 // 16 Pages
-#define MM_MODULE_MIN 0xD0000000 // Lowest Module Address
-#define MM_MODULE_MAX 0xF0000000 // 512 MiB
-
#define BITS 32
// - Processor/Machine Specific Features
-#if ARCH == i386
-// Uses no advanced features
-# define USE_MP 0
-# define USE_PAE 0
-#elif ARCH == i586
-// All Enabled
-# define USE_MP 1
-# define USE_PAE 1
-#else
+#if ARCH != i386 && ARCH != i486 && ARCH != i586
# error "Unknown architecture '" #ARCH "'"
#endif
// === MACROS ===
typedef volatile int tSpinlock;
+#define IS_LOCKED(lockptr) (!!(*(tSpinlock*)lockptr))
#define LOCK(lockptr) do {int v=1;\
while(v)__asm__ __volatile__("lock xchgl %%eax, (%%edi)":"=a"(v):"a"(1),"D"(lockptr));}while(0)
#define RELEASE(lockptr) __asm__ __volatile__("lock andl $0, (%%edi)"::"D"(lockptr));
Uint Resvd4[1]; // SS
} tSyscallRegs;
-typedef struct {
- Uint16 LimitLow;
- Uint16 BaseLow;
- Uint8 BaseMid;
- Uint8 Access;
- struct {
- unsigned LimitHi: 4;
- unsigned Flags: 4;
- } __attribute__ ((packed));
- Uint8 BaseHi;
-} __attribute__ ((packed)) tGDT;
-
typedef struct {
#if USE_PAE
Uint PDPT[4];