1 /// @file 2 /// IPF specific Global Control Registers accessing functions 3 /// 4 /// Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> 5 /// This program and the accompanying materials 6 /// are licensed and made available under the terms and conditions of the BSD License 7 /// which accompanies this distribution. The full text of the license may be found at 8 /// http://opensource.org/licenses/bsd-license.php. 9 /// 10 /// THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 /// WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 /// 13 /// Module Name: AccessGcr.s 14 /// 15 /// 16 17 //--------------------------------------------------------------------------------- 18 //++ 19 // AsmReadDcr 20 // 21 // This routine is used to Read the value of Default Control Register (DCR). 22 // 23 // Arguments : 24 // 25 // On Entry : 26 // 27 // Return Value: The current value of DCR. 28 // 29 //-- 30 //---------------------------------------------------------------------------------- 31 .text 32 .type AsmReadDcr, @function 33 .proc AsmReadDcr 34 35 AsmReadDcr:: 36 mov r8 = cr.dcr;; 37 br.ret.dpnt b0;; 38 .endp AsmReadDcr 39 40 //--------------------------------------------------------------------------------- 41 //++ 42 // AsmWriteDcr 43 // 44 // This routine is used to write the value to Default Control Register (DCR). 45 // 46 // Arguments : 47 // 48 // On Entry : The value need to be written to DCR 49 // 50 // Return Value: The value written to DCR. 51 // 52 //-- 53 //---------------------------------------------------------------------------------- 54 .text 55 .type AsmWriteDcr, @function 56 .proc AsmWriteDcr 57 .regstk 1, 0, 0, 0 58 59 AsmWriteDcr:: 60 mov cr.dcr = in0 61 mov r8 = in0;; 62 srlz.i;; 63 srlz.d;; 64 br.ret.dpnt b0;; 65 .endp AsmWriteDcr 66 67 68 //--------------------------------------------------------------------------------- 69 //++ 70 // AsmReadItc 71 // 72 // This routine is used to Read the value of Interval Timer Counter Register (ITC). 73 // 74 // Arguments : 75 // 76 // On Entry : 77 // 78 // Return Value: The current value of ITC. 79 // 80 //-- 81 //---------------------------------------------------------------------------------- 82 .text 83 .type AsmReadItc, @function 84 .proc AsmReadItc 85 86 AsmReadItc:: 87 mov r8 = ar.itc;; 88 br.ret.dpnt b0;; 89 .endp AsmReadItc 90 91 //--------------------------------------------------------------------------------- 92 //++ 93 // AsmWriteItc 94 // 95 // This routine is used to write the value to Interval Timer Counter Register (ITC). 96 // 97 // Arguments : 98 // 99 // On Entry : The value need to be written to the ITC 100 // 101 // Return Value: The value written to the ITC. 102 // 103 //-- 104 //---------------------------------------------------------------------------------- 105 .text 106 .type AsmWriteItc, @function 107 .proc AsmWriteItc 108 .regstk 1, 0, 0, 0 109 110 AsmWriteItc:: 111 mov ar.itc = in0 112 mov r8 = in0;; 113 br.ret.dpnt b0;; 114 .endp AsmWriteItc 115 116 117 //--------------------------------------------------------------------------------- 118 //++ 119 // AsmReadItm 120 // 121 // This routine is used to Read the value of Interval Timer Match Register (ITM). 122 // 123 // Arguments : 124 // 125 // On Entry : 126 // 127 // Return Value: The current value of ITM. 128 // 129 //-- 130 //---------------------------------------------------------------------------------- 131 .text 132 .type AsmReadItm, @function 133 .proc AsmReadItm 134 135 AsmReadItm:: 136 mov r8 = cr.itm;; 137 br.ret.dpnt b0;; 138 .endp AsmReadItm 139 140 //--------------------------------------------------------------------------------- 141 //++ 142 // AsmWriteItm 143 // 144 // This routine is used to write the value to Interval Timer Match Register (ITM). 145 // 146 // Arguments : 147 // 148 // On Entry : The value need to be written to ITM 149 // 150 // Return Value: The value written to ITM. 151 // 152 //-- 153 //---------------------------------------------------------------------------------- 154 .text 155 .type AsmWriteItm, @function 156 .proc AsmWriteItm 157 .regstk 1, 0, 0, 0 158 159 AsmWriteItm:: 160 mov cr.itm = in0 161 mov r8 = in0;; 162 srlz.d; 163 br.ret.dpnt b0;; 164 .endp AsmWriteItm 165 166 167 //--------------------------------------------------------------------------------- 168 //++ 169 // AsmReadIva 170 // 171 // This routine is used to read the value of Interruption Vector Address Register (IVA). 172 // 173 // Arguments : 174 // 175 // On Entry : 176 // 177 // Return Value: The current value of IVA. 178 // 179 //-- 180 //---------------------------------------------------------------------------------- 181 .text 182 .type AsmReadIva, @function 183 .proc AsmReadIva 184 185 AsmReadIva:: 186 mov r8 = cr.iva;; 187 br.ret.dpnt b0;; 188 .endp AsmReadIva 189 190 //--------------------------------------------------------------------------------- 191 //++ 192 // AsmWriteIva 193 // 194 // This routine is used to write the value to Interruption Vector Address Register (IVA). 195 // 196 // Arguments : 197 // 198 // On Entry : The value need to be written to IVA 199 // 200 // Return Value: The value written to IVA. 201 // 202 //-- 203 //---------------------------------------------------------------------------------- 204 .text 205 .type AsmWriteIva, @function 206 .proc AsmWriteIva 207 .regstk 1, 3, 0, 0 208 209 AsmWriteIva:: 210 alloc loc1=ar.pfs,1,4,0,0 ;; 211 212 mov loc2 = psr 213 rsm 0x6000 // Make sure interrupts are masked 214 215 mov cr.iva = in0 216 srlz.i;; 217 mov psr.l = loc2;; 218 srlz.i;; 219 srlz.d;; 220 mov ar.pfs=loc1 ;; 221 mov r8 = in0;; 222 br.ret.dpnt b0;; 223 .endp AsmWriteIva 224 225 226 //--------------------------------------------------------------------------------- 227 //++ 228 // AsmReadPta 229 // 230 // This routine is used to read the value of Page Table Address Register (PTA). 231 // 232 // Arguments : 233 // 234 // On Entry : 235 // 236 // Return Value: The current value of PTA. 237 // 238 //-- 239 //---------------------------------------------------------------------------------- 240 .text 241 .type AsmReadPta, @function 242 .proc AsmReadPta 243 244 AsmReadPta:: 245 mov r8 = cr.pta;; 246 br.ret.dpnt b0;; 247 .endp AsmReadPta 248 249 //--------------------------------------------------------------------------------- 250 //++ 251 // AsmWritePta 252 // 253 // This routine is used to write the value to Page Table Address Register (PTA)). 254 // 255 // Arguments : 256 // 257 // On Entry : The value need to be written to PTA 258 // 259 // Return Value: The value written to PTA. 260 // 261 //-- 262 //---------------------------------------------------------------------------------- 263 .text 264 .type AsmWritePta, @function 265 .proc AsmWritePta 266 .regstk 1, 0, 0, 0 267 268 AsmWritePta:: 269 mov cr.pta = in0 270 mov r8 = in0;; 271 srlz.i;; 272 srlz.d;; 273 br.ret.dpnt b0;; 274 .endp AsmWritePta 275
