reactos/include/reactos/asm.h

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Kernel
   4  * FILE:            ntoskrnl/include/amd64/asmmacro.S
   5  * PURPOSE:         ASM macros for for GAS and MASM/ML64
   6  * PROGRAMMERS:     Timo Kreuzer (timo.kreuzer@reactos.org)
   7  */
   8
   9 #ifdef _MSC_VER
  10
  11 /* Allow ".name" identifiers */
  12 OPTION DOTNAME
  13
  14 /* Hex numbers need to be in 01ABh format */
  15 #define HEX(x) 0##x##h
  16
  17 /* Macro values need to be marked */
  18 #define VAL(x) x
  19
  20 /* MASM/ML doesn't want explicit [rip] addressing */
  21 rip = 0
  22
  23 /* Due to MASM's reverse syntax, we are forced to use a precompiler macro */
  24 #define MACRO(name, ...) name MACRO __VA_ARGS__
  25
  26 /* To avoid reverse syntax we provide a new macro .PROC, replacing PROC... */
  27 .PROC MACRO name
  28     name PROC FRAME
  29     _name:
  30 ENDM
  31
  32 /* ... and .ENDP, replacing ENDP */
  33 .ENDP MACRO name
  34     name ENDP
  35 ENDM
  36
  37 /* MASM doesn't have an ASCII macro */
  38 .ASCII MACRO text
  39     DB text
  40 ENDM
  41
  42 /* MASM doesn't have an ASCIZ macro */
  43 .ASCIZ MACRO text
  44     DB text, 0
  45 ENDM
  46
  47 .text MACRO
  48 ENDM
  49
  50 .code64 MACRO
  51   .code
  52 ENDM
  53
  54 UNIMPLEMENTED MACRO name
  55 ENDM
  56
  57 /* We need this to distinguish repeat from macros */
  58 #define ENDR ENDM
  59
  60 #else /***********************************************************************/
  61
  62 /* Force intel syntax */
  63 .intel_syntax noprefix
  64 .code64
  65
  66 .altmacro
  67
  68 /* Hex numbers need to be in 0x1AB format */
  69 #define HEX(x) 0x##x
  70
  71 /* Macro values need to be marked */
  72 #define VAL(x) \x
  73
  74 /* Due to MASM's reverse syntax, we are forced to use a precompiler macro */
  75 #define MACRO(...) .macro __VA_ARGS__
  76 #define ENDM .endm
  77
  78 /* To avoid reverse syntax we provide a new macro .PROC, replacing PROC... */
  79 .macro .PROC name
  80     .func \name
  81     \name:
  82     .cfi_startproc
  83     .equ cfa_current_offset, -8
  84 .endm
  85
  86 /* ... and .ENDP, replacing ENDP */
  87 .macro .ENDP name
  88     .cfi_endproc
  89     .endfunc
  90 .endm
  91
  92 /* MASM compatible PUBLIC */
  93 .macro PUBLIC symbol
  94     .global \symbol
  95 .endm
  96
  97 /* MASM compatible ALIGN */
  98 #define ALIGN .align
  99
 100 /* MASM compatible REPEAT, additional ENDR */
 101 #define REPEAT .rept
 102 #define ENDR .endr
 103
 104 /* MASM compatible EXTERN */
 105 .macro EXTERN name
 106 .endm
 107
 108 /* MASM needs an END tag */
 109 #define END
 110
 111 /* Macros for x64 stack unwind OPs */
 112
 113 .macro .allocstack size
 114     .cfi_adjust_cfa_offset \size
 115     .set cfa_current_offset, cfa_current_offset - \size
 116 .endm
 117
 118 code = 1
 119 .macro .pushframe param=0
 120     .if (\param)
 121         .cfi_adjust_cfa_offset 0x30
 122         .set cfa_current_offset, cfa_current_offset - 0x30
 123     .else
 124         .cfi_adjust_cfa_offset 0x28
 125         .set cfa_current_offset, cfa_current_offset - 0x28
 126     .endif
 127 .endm
 128
 129 .macro .pushreg reg
 130     .cfi_adjust_cfa_offset 8
 131     .equ cfa_current_offset, cfa_current_offset - 8
 132     .cfi_offset \reg, cfa_current_offset
 133 .endm
 134
 135 .macro .savereg reg, offset
 136     // checkme!!!
 137     .cfi_offset \reg, \offset
 138 .endm
 139
 140 .macro .savexmm128 reg, offset
 141     // checkme!!!
 142     .cfi_offset \reg, \offset
 143 .endm
 144
 145 .macro .setframe reg, offset
 146     .cfi_def_cfa reg, \offset
 147     .equ cfa_current_offset, \offset
 148 .endm
 149
 150 .macro .endprolog
 151 .endm
 152
 153 .macro UNIMPLEMENTED2 file, line, func
 154
 155     jmp 3f
 156 1:  .asciz "\func"
 157 2:  .asciz \file
 158 3:
 159     sub rsp, 0x20
 160     lea rcx, _MsgUnimplemented[rip]
 161     lea rdx, 1b[rip]
 162     lea r8, 2b[rip]
 163     mov r9, \line
 164     call DbgPrint
 165     add rsp, 0x20
 166 .endm
 167 #define UNIMPLEMENTED UNIMPLEMENTED2 __FILE__, __LINE__,
 168
 169 /* MASM/ML uses ".if" for runtime conditionals, and "if" for compile time
 170    conditionals. We therefore use "if", too. .if shouldn't be used at all */
 171 #define if .if
 172 #define endif .endif
 173 #define else .else
 174
 175 #endif