2 * AcessOS Microkernel Version
8 void Spinlock(int *lock)
11 while(v) __asm__ __volatile__ ("lock xchgl %%eax, (%%edi)":"=a"(v):"a"(1),"D"(lock));
14 void Release(int *lock)
16 __asm__ __volatile__ ("lock andl $0, (%0)"::"r"(lock));
19 // === IO Commands ===
20 void outb(Uint16 Port, Uint8 Data)
22 __asm__ __volatile__ ("outb %%al, %%dx"::"d"(Port),"a"(Data));
24 void outw(Uint16 Port, Uint16 Data)
26 __asm__ __volatile__ ("outw %%ax, %%dx"::"d"(Port),"a"(Data));
28 void outd(Uint16 Port, Uint32 Data)
30 __asm__ __volatile__ ("outl %%eax, %%dx"::"d"(Port),"a"(Data));
32 Uint8 inb(Uint16 Port)
35 __asm__ __volatile__ ("inb %%dx, %%al":"=a"(ret):"d"(Port));
38 Uint16 inw(Uint16 Port)
41 __asm__ __volatile__ ("inw %%dx, %%ax":"=a"(ret):"d"(Port));
44 Uint32 ind(Uint16 Port)
47 __asm__ __volatile__ ("inl %%dx, %%eax":"=a"(ret):"d"(Port));
52 * \fn void *memset(void *Dest, int Val, Uint Num)
53 * \brief Do a byte granuality set of Dest
55 void *memset(void *Dest, int Val, Uint Num)
57 __asm__ __volatile__ (
61 :: "D" (Dest), "a" (Val), "c" (Num/4), "r" (Num&3));
65 * \fn void *memsetd(void *Dest, Uint Val, Uint Num)
67 void *memsetd(void *Dest, Uint Val, Uint Num)
69 __asm__ __volatile__ ("rep stosl" :: "D" (Dest), "a" (Val), "c" (Num));
75 * \fn void *memcpy(void *Dest, void *Src, Uint Num)
77 void *memcpy(void *Dest, void *Src, Uint Num)
79 if((Uint)Dest & 3 || (Uint)Src & 3)
80 __asm__ __volatile__ ("rep movsb" :: "D" (Dest), "S" (Src), "c" (Num));
82 __asm__ __volatile__ (
86 :: "D" (Dest), "S" (Src), "c" (Num/4), "r" (Num&3));
91 * \fn void *memcpyd(void *Dest, void *Src, Uint Num)
93 void *memcpyd(void *Dest, void *Src, Uint Num)
95 __asm__ __volatile__ ("rep movsl" :: "D" (Dest), "S" (Src), "c" (Num));
100 * \fn Uint64 __udivdi3(Uint64 Num, Uint64 Den)
101 * \brief Divide two 64-bit integers
103 Uint64 __udivdi3(Uint64 Num, Uint64 Den)
107 if(Den == 0) __asm__ __volatile__ ("int $0x0"); // Call Div by Zero Error
108 if(Den == 1) return Num; // Speed Hacks
109 if(Den == 2) return Num >> 1; // Speed Hacks
110 if(Den == 4) return Num >> 2; // Speed Hacks
111 if(Den == 8) return Num >> 3; // Speed Hacks
112 if(Den == 16) return Num >> 4; // Speed Hacks
113 if(Den == 32) return Num >> 5; // Speed Hacks
114 if(Den == 1024) return Num >> 10; // Speed Hacks
115 if(Den == 2048) return Num >> 11; // Speed Hacks
116 if(Den == 4096) return Num >> 12;
118 if(Num >> 32 == 0 && Den >> 32 == 0)
119 return (Uint32)Num / (Uint32)Den;
121 //Log("__udivdi3: (Num={0x%x:%x}, Den={0x%x:%x})",
122 // Num>>32, Num&0xFFFFFFFF,
123 // Den>>32, Den&0xFFFFFFFF);
133 * \fn Uint64 __umoddi3(Uint64 Num, Uint64 Den)
134 * \brief Get the modulus of two 64-bit integers
136 Uint64 __umoddi3(Uint64 Num, Uint64 Den)
138 if(Den == 0) __asm__ __volatile__ ("int $0x0"); // Call Div by Zero Error
139 if(Den == 1) return 0; // Speed Hacks
140 if(Den == 2) return Num & 1; // Speed Hacks
141 if(Den == 4) return Num & 3; // Speed Hacks
142 if(Den == 8) return Num & 7; // Speed Hacks
143 if(Den == 16) return Num & 15; // Speed Hacks
144 if(Den == 32) return Num & 31; // Speed Hacks
145 if(Den == 1024) return Num & 1023; // Speed Hacks
146 if(Den == 2048) return Num & 2047; // Speed Hacks
147 if(Den == 4096) return Num & 4095; // Speed Hacks
149 if(Num >> 32 == 0 && Den >> 32 == 0)
150 return (Uint32)Num % (Uint32)Den;
158 EXPORT(memcpy); EXPORT(memset);
159 //EXPORT(memcpyw); EXPORT(memsetw);
160 EXPORT(memcpyd); EXPORT(memsetd);
161 EXPORT(inb); EXPORT(inw); EXPORT(ind);
162 EXPORT(outb); EXPORT(outw); EXPORT(outd);
163 EXPORT(__udivdi3); EXPORT(__umoddi3);