include/reactos/asm.inc

   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 _USE_ML
  10
  11 /* Allow ".name" identifiers */
  12 OPTION DOTNAME
  13
  14 .686P
  15 .XMM
  16 .MODEL FLAT
  17 ASSUME CS:NOTHING, DS:NOTHING, ES:NOTHING, FS:NOTHING, GS:NOTHING
  18
  19 /* Hex numbers need to be in 01ABh format */
  20 #define HEX(x) 0##x##h
  21
  22 /* Macro values need to be marked */
  23 #define VAL(x) x
  24
  25 /* MASM/ML doesn't want explicit [rip] addressing */
  26 rip = 0
  27
  28 /* Due to MASM's reverse syntax, we are forced to use a precompiler macro */
  29 #define MACRO(name, ...) name MACRO __VA_ARGS__
  30
  31 /* To avoid reverse syntax we provide a new macro .PROC, replacing PROC... */
  32 .PROC MACRO name
  33     name PROC FRAME
  34     _name:
  35 ENDM
  36
  37 /* ... and .ENDP, replacing ENDP */
  38 .ENDP MACRO name
  39     name ENDP
  40 ENDM
  41
  42 /* MASM doesn't have an ASCII macro */
  43 .ASCII MACRO text
  44     DB text
  45 ENDM
  46
  47 /* MASM doesn't have an ASCIZ macro */
  48 .ASCIZ MACRO text
  49     DB text, 0
  50 ENDM
  51
  52 #define lgdt lgdt fword ptr ds:
  53
  54 #define lidt lidt fword ptr ds:
  55
  56 ljmp MACRO segment, offset
  57     DB 0
  58 ENDM
  59
  60 .code64 MACRO
  61     .code
  62 ENDM
  63
  64 .code32 MACRO
  65     .code
  66     .586P
  67 ENDM
  68
  69 .code16 MACRO
  70     ASSUME nothing
  71     .text SEGMENT use16
  72 ENDM
  73
  74 .endcode16 MACRO
  75     .text ENDS
  76 ENDM
  77
  78 .bss MACRO
  79     .DATA?
  80     ASSUME nothing
  81 ENDM
  82
  83 //.text MACRO
  84 //ENDM
  85
  86 .align MACRO alignment
  87     ALIGN alignment
  88 ENDM
  89
  90 .byte MACRO args:VARARG
  91     db args
  92 ENDM
  93
  94 .short MACRO args:VARARG
  95     dw args
  96 ENDM
  97
  98 .word MACRO args:VARARG
  99     dw args
 100 ENDM
 101
 102 .long MACRO args:VARARG
 103     dd args
 104 ENDM
 105
 106 .double MACRO args:VARARG
 107     dq args
 108 ENDM
 109
 110 .org MACRO value
 111     ORG value
 112 ENDM
 113
 114 .fill MACRO repeat, size, value
 115 // FIXME
 116 ENDM
 117
 118 ljmp MACRO segment, offset
 119 // FIXME
 120 ENDM
 121
 122 UNIMPLEMENTED MACRO name
 123 ENDM
 124
 125 /* We need this to distinguish repeat from macros */
 126 #define ENDR ENDM
 127
 128 #else /***********************************************************************/
 129
 130 /* Force intel syntax */
 131 .intel_syntax noprefix
 132
 133 .altmacro
 134
 135 /* Hex numbers need to be in 0x1AB format */
 136 #define HEX(y) 0x##y
 137
 138 /* Macro values need to be marked */
 139 #define VAL(x) \x
 140
 141 /* Due to MASM's reverse syntax, we are forced to use a precompiler macro */
 142 #define MACRO(...) .macro __VA_ARGS__
 143 #define ENDM .endm
 144
 145 /* To avoid reverse syntax we provide a new macro .PROC, replacing PROC... */
 146 .macro .PROC name
 147     .func \name
 148     \name:
 149     .cfi_startproc
 150     .equ cfa_current_offset, -8
 151 .endm
 152
 153 /* ... and .ENDP, replacing ENDP */
 154 .macro .ENDP name
 155     .cfi_endproc
 156     .endfunc
 157 .endm
 158
 159 /* MASM compatible PUBLIC */
 160 .macro PUBLIC symbol
 161     .global \symbol
 162 .endm
 163
 164 /* Dummy ASSUME */
 165 .macro ASSUME p1 p2 p3 p4 p5 p6 p7 p8
 166 .endm
 167
 168 /* MASM needs an end tag for segments */
 169 .macro .endcode16
 170 .endm
 171
 172 /* MASM compatible ALIGN */
 173 #define ALIGN .align
 174
 175 /* MASM compatible REPEAT, additional ENDR */
 176 #define REPEAT .rept
 177 #define ENDR .endr
 178
 179 .macro ljmp segment, offset
 180     jmp far ptr \segment:\offset
 181 .endm
 182
 183 /* MASM compatible EXTERN */
 184 .macro EXTERN name
 185 .endm
 186
 187 /* MASM needs an END tag */
 188 #define END
 189
 190 .macro .MODEL model
 191 .endm
 192
 193 .macro .code
 194     .text
 195 .endm
 196
 197 /* Macros for x64 stack unwind OPs */
 198
 199 .macro .allocstack size
 200     .cfi_adjust_cfa_offset \size
 201     .set cfa_current_offset, cfa_current_offset - \size
 202 .endm
 203
 204 code = 1
 205 .macro .pushframe param=0
 206     .if (\param)
 207         .cfi_adjust_cfa_offset 0x30
 208         .set cfa_current_offset, cfa_current_offset - 0x30
 209     .else
 210         .cfi_adjust_cfa_offset 0x28
 211         .set cfa_current_offset, cfa_current_offset - 0x28
 212     .endif
 213 .endm
 214
 215 .macro .pushreg reg
 216     .cfi_adjust_cfa_offset 8
 217     .equ cfa_current_offset, cfa_current_offset - 8
 218     .cfi_offset \reg, cfa_current_offset
 219 .endm
 220
 221 .macro .savereg reg, offset
 222     // checkme!!!
 223     .cfi_offset \reg, \offset
 224 .endm
 225
 226 .macro .savexmm128 reg, offset
 227     // checkme!!!
 228     .cfi_offset \reg, \offset
 229 .endm
 230
 231 .macro .setframe reg, offset
 232     .cfi_def_cfa reg, \offset
 233     .equ cfa_current_offset, \offset
 234 .endm
 235
 236 .macro .endprolog
 237 .endm
 238
 239 .macro UNIMPLEMENTED2 file, line, func
 240
 241     jmp 3f
 242 1:  .asciz "\func"
 243 2:  .asciz \file
 244 3:
 245     sub rsp, 0x20
 246     lea rcx, MsgUnimplemented[rip]
 247     lea rdx, 1b[rip]
 248     lea r8, 2b[rip]
 249     mov r9, \line
 250     call DbgPrint
 251     add rsp, 0x20
 252 .endm
 253 #define UNIMPLEMENTED UNIMPLEMENTED2 __FILE__, __LINE__,
 254
 255 /* MASM/ML uses ".if" for runtime conditionals, and "if" for compile time
 256    conditionals. We therefore use "if", too. .if shouldn't be used at all */
 257 #define if .if
 258 #define endif .endif
 259 #define else .else
 260 #define elseif .elseif
 261
 262 #endif