include/asm/syscalls.inc

   1
   2 #ifdef _M_IX86
   3 EXTERN _KiSystemService:PROC
   4 #define KUSER_SHARED_SYSCALL HEX(7ffe0300)
   5 #define KGDT_R0_CODE 8
   6 MACRO(STUBCODE_U, SyscallId, StackBytes)
   7     mov eax, SyscallId
   8     mov ecx, KUSER_SHARED_SYSCALL
   9     call dword ptr [ecx]
  10     ret StackBytes
  11 ENDM
  12 MACRO(STUBCODE_K, SyscallId, StackBytes)
  13     mov eax, SyscallId
  14     lea edx, [esp + 4]
  15     pushf
  16     push KGDT_R0_CODE
  17     call _KiSystemService
  18     ret StackBytes
  19 ENDM
  20 #elif defined(_M_AMD64)
  21 EXTERN KiSystemService:PROC
  22 MACRO(STUBCODE_U, SyscallId, StackBytes)
  23     mov eax, SyscallId
  24     mov r10, rcx
  25     syscall
  26     ret StackBytes
  27 ENDM
  28 MACRO(STUBCODE_K, SyscallId, StackBytes)
  29     mov eax, SyscallId
  30     call KiSystemService
  31     ret StackBytes
  32 ENDM
  33 #elif defined(_M_ARM)
  34 MACRO(STUBCODE_U, SyscallId, StackBytes)
  35     swi #SyscallId
  36     bx lr
  37 ENDM
  38 MACRO(STUBCODE_K, SyscallId, StackBytes)
  39     mov ip, lr
  40     swi #SyscallId
  41     bx ip
  42 ENDM
  43 #elif defined(_M_PPC)
  44 MACRO(STUBCODE_U, SyscallId, StackBytes)
  45     stwu 1,-16(1)
  46     mflr 0
  47     stw  0,0(1)
  48     li   0, SyscallId
  49     sc
  50     lwz 0,0(1)
  51     mtlr 0
  52     addi 1,1,16
  53     blr
  54 ENDM
  55 #define STUBCODE_K STUBCODE_U
  56 #elif defined(_M_MIPS)
  57 MACRO(STUBCODE_U, SyscallId, StackBytes)
  58     li $8, KUSER_SHARED_SYSCALL
  59     lw $8,0($8)
  60     j $8
  61     nop
  62 ENDM
  63 MACRO(STUBCODE_K, SyscallId, StackBytes)
  64     j KiSystemService
  65     nop
  66 ENDM
  67 #else
  68 #error unsupported architecture
  69 #endif
  70
  71 #ifdef _M_IX86
  72 MACRO(MAKE_LABEL, Name, Stackbytes)
  73     PUBLIC _&Name&@&Stackbytes
  74     _&Name&@&Stackbytes:
  75 ENDM
  76 #else
  77 MACRO(MAKE_LABEL, Name, Stackbytes)
  78     PUBLIC &Name
  79     &Name:
  80 ENDM
  81 #endif
  82
  83 MACRO(STUB_U, Name, ArgCount)
  84     Stackbytes = 4 * &ArgCount
  85     MAKE_LABEL Zw&Name, %Stackbytes
  86     MAKE_LABEL Nt&Name, %Stackbytes
  87     STUBCODE_U SyscallId, %Stackbytes
  88     SyscallId = SyscallId + 1
  89 ENDM
  90
  91 MACRO(STUB_K, Name, ArgCount)
  92     Stackbytes = 4 * &ArgCount
  93     MAKE_LABEL Zw&Name, %Stackbytes
  94     STUBCODE_K SyscallId, %Stackbytes
  95     SyscallId = SyscallId + 1
  96 ENDM