usr/src/uts/intel/io/acpica/utilities/utprint.c

   1 /******************************************************************************
   2  *
   3  * Module Name: utprint - Formatted printing routines
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2016, Intel Corp.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #include "acpi.h"
  45 #include "accommon.h"
  46
  47 #define _COMPONENT          ACPI_UTILITIES
  48         ACPI_MODULE_NAME    ("utprint")
  49
  50
  51 #define ACPI_FORMAT_SIGN            0x01
  52 #define ACPI_FORMAT_SIGN_PLUS       0x02
  53 #define ACPI_FORMAT_SIGN_PLUS_SPACE 0x04
  54 #define ACPI_FORMAT_ZERO            0x08
  55 #define ACPI_FORMAT_LEFT            0x10
  56 #define ACPI_FORMAT_UPPER           0x20
  57 #define ACPI_FORMAT_PREFIX          0x40
  58
  59
  60 /* Local prototypes */
  61
  62 static ACPI_SIZE
  63 AcpiUtBoundStringLength (
  64     const char              *String,
  65     ACPI_SIZE               Count);
  66
  67 static char *
  68 AcpiUtBoundStringOutput (
  69     char                    *String,
  70     const char              *End,
  71     char                    c);
  72
  73 static char *
  74 AcpiUtFormatNumber (
  75     char                    *String,
  76     char                    *End,
  77     UINT64                  Number,
  78     UINT8                   Base,
  79     INT32                   Width,
  80     INT32                   Precision,
  81     UINT8                   Type);
  82
  83 static char *
  84 AcpiUtPutNumber (
  85     char                    *String,
  86     UINT64                  Number,
  87     UINT8                   Base,
  88     BOOLEAN                 Upper);
  89
  90
  91 /*******************************************************************************
  92  *
  93  * FUNCTION:    AcpiUtBoundStringLength
  94  *
  95  * PARAMETERS:  String              - String with boundary
  96  *              Count               - Boundary of the string
  97  *
  98  * RETURN:      Length of the string. Less than or equal to Count.
  99  *
 100  * DESCRIPTION: Calculate the length of a string with boundary.
 101  *
 102  ******************************************************************************/
 103
 104 static ACPI_SIZE
 105 AcpiUtBoundStringLength (
 106     const char              *String,
 107     ACPI_SIZE               Count)
 108 {
 109     UINT32                  Length = 0;
 110
 111
 112     while (*String && Count)
 113     {
 114         Length++;
 115         String++;
 116         Count--;
 117     }
 118
 119     return (Length);
 120 }
 121
 122
 123 /*******************************************************************************
 124  *
 125  * FUNCTION:    AcpiUtBoundStringOutput
 126  *
 127  * PARAMETERS:  String              - String with boundary
 128  *              End                 - Boundary of the string
 129  *              c                   - Character to be output to the string
 130  *
 131  * RETURN:      Updated position for next valid character
 132  *
 133  * DESCRIPTION: Output a character into a string with boundary check.
 134  *
 135  ******************************************************************************/
 136
 137 static char *
 138 AcpiUtBoundStringOutput (
 139     char                    *String,
 140     const char              *End,
 141     char                    c)
 142 {
 143
 144     if (String < End)
 145     {
 146         *String = c;
 147     }
 148
 149     ++String;
 150     return (String);
 151 }
 152
 153
 154 /*******************************************************************************
 155  *
 156  * FUNCTION:    AcpiUtPutNumber
 157  *
 158  * PARAMETERS:  String              - Buffer to hold reverse-ordered string
 159  *              Number              - Integer to be converted
 160  *              Base                - Base of the integer
 161  *              Upper               - Whether or not using upper cased digits
 162  *
 163  * RETURN:      Updated position for next valid character
 164  *
 165  * DESCRIPTION: Convert an integer into a string, note that, the string holds a
 166  *              reversed ordered number without the trailing zero.
 167  *
 168  ******************************************************************************/
 169
 170 static char *
 171 AcpiUtPutNumber (
 172     char                    *String,
 173     UINT64                  Number,
 174     UINT8                   Base,
 175     BOOLEAN                 Upper)
 176 {
 177     const char              *Digits;
 178     UINT64                  DigitIndex;
 179     char                    *Pos;
 180
 181
 182     Pos = String;
 183     Digits = Upper ? AcpiGbl_UpperHexDigits : AcpiGbl_LowerHexDigits;
 184
 185     if (Number == 0)
 186     {
 187         *(Pos++) = '0';
 188     }
 189     else
 190     {
 191         while (Number)
 192         {
 193             (void) AcpiUtDivide (Number, Base, &Number, &DigitIndex);
 194             *(Pos++) = Digits[DigitIndex];
 195         }
 196     }
 197
 198     /* *(Pos++) = '0'; */
 199     return (Pos);
 200 }
 201
 202
 203 /*******************************************************************************
 204  *
 205  * FUNCTION:    AcpiUtScanNumber
 206  *
 207  * PARAMETERS:  String              - String buffer
 208  *              NumberPtr           - Where the number is returned
 209  *
 210  * RETURN:      Updated position for next valid character
 211  *
 212  * DESCRIPTION: Scan a string for a decimal integer.
 213  *
 214  ******************************************************************************/
 215
 216 const char *
 217 AcpiUtScanNumber (
 218     const char              *String,
 219     UINT64                  *NumberPtr)
 220 {
 221     UINT64                  Number = 0;
 222
 223
 224     while (isdigit ((int) *String))
 225     {
 226         Number *= 10;
 227         Number += *(String++) - '0';
 228     }
 229
 230     *NumberPtr = Number;
 231     return (String);
 232 }
 233
 234
 235 /*******************************************************************************
 236  *
 237  * FUNCTION:    AcpiUtPrintNumber
 238  *
 239  * PARAMETERS:  String              - String buffer
 240  *              Number              - The number to be converted
 241  *
 242  * RETURN:      Updated position for next valid character
 243  *
 244  * DESCRIPTION: Print a decimal integer into a string.
 245  *
 246  ******************************************************************************/
 247
 248 const char *
 249 AcpiUtPrintNumber (
 250     char                    *String,
 251     UINT64                  Number)
 252 {
 253     char                    AsciiString[20];
 254     const char              *Pos1;
 255     char                    *Pos2;
 256
 257
 258     Pos1 = AcpiUtPutNumber (AsciiString, Number, 10, FALSE);
 259     Pos2 = String;
 260
 261     while (Pos1 != AsciiString)
 262     {
 263         *(Pos2++) = *(--Pos1);
 264     }
 265
 266     *Pos2 = 0;
 267     return (String);
 268 }
 269
 270
 271 /*******************************************************************************
 272  *
 273  * FUNCTION:    AcpiUtFormatNumber
 274  *
 275  * PARAMETERS:  String              - String buffer with boundary
 276  *              End                 - Boundary of the string
 277  *              Number              - The number to be converted
 278  *              Base                - Base of the integer
 279  *              Width               - Field width
 280  *              Precision           - Precision of the integer
 281  *              Type                - Special printing flags
 282  *
 283  * RETURN:      Updated position for next valid character
 284  *
 285  * DESCRIPTION: Print an integer into a string with any base and any precision.
 286  *
 287  ******************************************************************************/
 288
 289 static char *
 290 AcpiUtFormatNumber (
 291     char                    *String,
 292     char                    *End,
 293     UINT64                  Number,
 294     UINT8                   Base,
 295     INT32                   Width,
 296     INT32                   Precision,
 297     UINT8                   Type)
 298 {
 299     char                    *Pos;
 300     char                    Sign;
 301     char                    Zero;
 302     BOOLEAN                 NeedPrefix;
 303     BOOLEAN                 Upper;
 304     INT32                   i;
 305     char                    ReversedString[66];
 306
 307
 308     /* Parameter validation */
 309
 310     if (Base < 2 || Base > 16)
 311     {
 312         return (NULL);
 313     }
 314
 315     if (Type & ACPI_FORMAT_LEFT)
 316     {
 317         Type &= ~ACPI_FORMAT_ZERO;
 318     }
 319
 320     NeedPrefix = ((Type & ACPI_FORMAT_PREFIX) && Base != 10) ? TRUE : FALSE;
 321     Upper = (Type & ACPI_FORMAT_UPPER) ? TRUE : FALSE;
 322     Zero = (Type & ACPI_FORMAT_ZERO) ? '0' : ' ';
 323
 324     /* Calculate size according to sign and prefix */
 325
 326     Sign = '\0';
 327     if (Type & ACPI_FORMAT_SIGN)
 328     {
 329         if ((INT64) Number < 0)
 330         {
 331             Sign = '-';
 332             Number = - (INT64) Number;
 333             Width--;
 334         }
 335         else if (Type & ACPI_FORMAT_SIGN_PLUS)
 336         {
 337             Sign = '+';
 338             Width--;
 339         }
 340         else if (Type & ACPI_FORMAT_SIGN_PLUS_SPACE)
 341         {
 342             Sign = ' ';
 343             Width--;
 344         }
 345     }
 346     if (NeedPrefix)
 347     {
 348         Width--;
 349         if (Base == 16)
 350         {
 351             Width--;
 352         }
 353     }
 354
 355     /* Generate full string in reverse order */
 356
 357     Pos = AcpiUtPutNumber (ReversedString, Number, Base, Upper);
 358     i = ACPI_PTR_DIFF (Pos, ReversedString);
 359
 360     /* Printing 100 using %2d gives "100", not "00" */
 361
 362     if (i > Precision)
 363     {
 364         Precision = i;
 365     }
 366
 367     Width -= Precision;
 368
 369     /* Output the string */
 370
 371     if (!(Type & (ACPI_FORMAT_ZERO | ACPI_FORMAT_LEFT)))
 372     {
 373         while (--Width >= 0)
 374         {
 375             String = AcpiUtBoundStringOutput (String, End, ' ');
 376         }
 377     }
 378     if (Sign)
 379     {
 380         String = AcpiUtBoundStringOutput (String, End, Sign);
 381     }
 382     if (NeedPrefix)
 383     {
 384         String = AcpiUtBoundStringOutput (String, End, '0');
 385         if (Base == 16)
 386         {
 387             String = AcpiUtBoundStringOutput (
 388                 String, End, Upper ? 'X' : 'x');
 389         }
 390     }
 391     if (!(Type & ACPI_FORMAT_LEFT))
 392     {
 393         while (--Width >= 0)
 394         {
 395             String = AcpiUtBoundStringOutput (String, End, Zero);
 396         }
 397     }
 398
 399     while (i <= --Precision)
 400     {
 401         String = AcpiUtBoundStringOutput (String, End, '0');
 402     }
 403     while (--i >= 0)
 404     {
 405         String = AcpiUtBoundStringOutput (String, End,
 406                     ReversedString[i]);
 407     }
 408     while (--Width >= 0)
 409     {
 410         String = AcpiUtBoundStringOutput (String, End, ' ');
 411     }
 412
 413     return (String);
 414 }
 415
 416
 417 /*******************************************************************************
 418  *
 419  * FUNCTION:    AcpiUtVsnprintf
 420  *
 421  * PARAMETERS:  String              - String with boundary
 422  *              Size                - Boundary of the string
 423  *              Format              - Standard printf format
 424  *              Args                - Argument list
 425  *
 426  * RETURN:      Number of bytes actually written.
 427  *
 428  * DESCRIPTION: Formatted output to a string using argument list pointer.
 429  *
 430  ******************************************************************************/
 431
 432 int
 433 AcpiUtVsnprintf (
 434     char                    *String,
 435     ACPI_SIZE               Size,
 436     const char              *Format,
 437     va_list                 Args)
 438 {
 439     UINT8                   Base;
 440     UINT8                   Type;
 441     INT32                   Width;
 442     INT32                   Precision;
 443     char                    Qualifier;
 444     UINT64                  Number;
 445     char                    *Pos;
 446     char                    *End;
 447     char                    c;
 448     const char              *s;
 449     const void              *p;
 450     INT32                   Length;
 451     int                     i;
 452
 453
 454     Pos = String;
 455     End = String + Size;
 456
 457     for (; *Format; ++Format)
 458     {
 459         if (*Format != '%')
 460         {
 461             Pos = AcpiUtBoundStringOutput (Pos, End, *Format);
 462             continue;
 463         }
 464
 465         Type = 0;
 466         Base = 10;
 467
 468         /* Process sign */
 469
 470         do
 471         {
 472             ++Format;
 473             if (*Format == '#')
 474             {
 475                 Type |= ACPI_FORMAT_PREFIX;
 476             }
 477             else if (*Format == '0')
 478             {
 479                 Type |= ACPI_FORMAT_ZERO;
 480             }
 481             else if (*Format == '+')
 482             {
 483                 Type |= ACPI_FORMAT_SIGN_PLUS;
 484             }
 485             else if (*Format == ' ')
 486             {
 487                 Type |= ACPI_FORMAT_SIGN_PLUS_SPACE;
 488             }
 489             else if (*Format == '-')
 490             {
 491                 Type |= ACPI_FORMAT_LEFT;
 492             }
 493             else
 494             {
 495                 break;
 496             }
 497
 498         } while (1);
 499
 500         /* Process width */
 501
 502         Width = -1;
 503         if (isdigit ((int) *Format))
 504         {
 505             Format = AcpiUtScanNumber (Format, &Number);
 506             Width = (INT32) Number;
 507         }
 508         else if (*Format == '*')
 509         {
 510             ++Format;
 511             Width = va_arg (Args, int);
 512             if (Width < 0)
 513             {
 514                 Width = -Width;
 515                 Type |= ACPI_FORMAT_LEFT;
 516             }
 517         }
 518
 519         /* Process precision */
 520
 521         Precision = -1;
 522         if (*Format == '.')
 523         {
 524             ++Format;
 525             if (isdigit ((int) *Format))
 526             {
 527                 Format = AcpiUtScanNumber (Format, &Number);
 528                 Precision = (INT32) Number;
 529             }
 530             else if (*Format == '*')
 531             {
 532                 ++Format;
 533                 Precision = va_arg (Args, int);
 534             }
 535
 536             if (Precision < 0)
 537             {
 538                 Precision = 0;
 539             }
 540         }
 541
 542         /* Process qualifier */
 543
 544         Qualifier = -1;
 545         if (*Format == 'h' || *Format == 'l' || *Format == 'L')
 546         {
 547             Qualifier = *Format;
 548             ++Format;
 549
 550             if (Qualifier == 'l' && *Format == 'l')
 551             {
 552                 Qualifier = 'L';
 553                 ++Format;
 554             }
 555         }
 556
 557         switch (*Format)
 558         {
 559         case '%':
 560
 561             Pos = AcpiUtBoundStringOutput (Pos, End, '%');
 562             continue;
 563
 564         case 'c':
 565
 566             if (!(Type & ACPI_FORMAT_LEFT))
 567             {
 568                 while (--Width > 0)
 569                 {
 570                     Pos = AcpiUtBoundStringOutput (Pos, End, ' ');
 571                 }
 572             }
 573
 574             c = (char) va_arg (Args, int);
 575             Pos = AcpiUtBoundStringOutput (Pos, End, c);
 576
 577             while (--Width > 0)
 578             {
 579                 Pos = AcpiUtBoundStringOutput (Pos, End, ' ');
 580             }
 581             continue;
 582
 583         case 's':
 584
 585             s = va_arg (Args, char *);
 586             if (!s)
 587             {
 588                 s = "<NULL>";
 589             }
 590             Length = AcpiUtBoundStringLength (s, Precision);
 591             if (!(Type & ACPI_FORMAT_LEFT))
 592             {
 593                 while (Length < Width--)
 594                 {
 595                     Pos = AcpiUtBoundStringOutput (Pos, End, ' ');
 596                 }
 597             }
 598
 599             for (i = 0; i < Length; ++i)
 600             {
 601                 Pos = AcpiUtBoundStringOutput (Pos, End, *s);
 602                 ++s;
 603             }
 604
 605             while (Length < Width--)
 606             {
 607                 Pos = AcpiUtBoundStringOutput (Pos, End, ' ');
 608             }
 609             continue;
 610
 611         case 'o':
 612
 613             Base = 8;
 614             break;
 615
 616         case 'X':
 617
 618             Type |= ACPI_FORMAT_UPPER;
 619             /* FALLTHROUGH */
 620
 621         case 'x':
 622
 623             Base = 16;
 624             break;
 625
 626         case 'd':
 627         case 'i':
 628
 629             Type |= ACPI_FORMAT_SIGN;
 630
 631         case 'u':
 632
 633             break;
 634
 635         case 'p':
 636
 637             if (Width == -1)
 638             {
 639                 Width = 2 * sizeof (void *);
 640                 Type |= ACPI_FORMAT_ZERO;
 641             }
 642
 643             p = va_arg (Args, void *);
 644             Pos = AcpiUtFormatNumber (
 645                 Pos, End, ACPI_TO_INTEGER (p), 16, Width, Precision, Type);
 646             continue;
 647
 648         default:
 649
 650             Pos = AcpiUtBoundStringOutput (Pos, End, '%');
 651             if (*Format)
 652             {
 653                 Pos = AcpiUtBoundStringOutput (Pos, End, *Format);
 654             }
 655             else
 656             {
 657                 --Format;
 658             }
 659             continue;
 660         }
 661
 662         if (Qualifier == 'L')
 663         {
 664             Number = va_arg (Args, UINT64);
 665             if (Type & ACPI_FORMAT_SIGN)
 666             {
 667                 Number = (INT64) Number;
 668             }
 669         }
 670         else if (Qualifier == 'l')
 671         {
 672             Number = va_arg (Args, unsigned long);
 673             if (Type & ACPI_FORMAT_SIGN)
 674             {
 675                 Number = (INT32) Number;
 676             }
 677         }
 678         else if (Qualifier == 'h')
 679         {
 680             Number = (UINT16) va_arg (Args, int);
 681             if (Type & ACPI_FORMAT_SIGN)
 682             {
 683                 Number = (INT16) Number;
 684             }
 685         }
 686         else
 687         {
 688             Number = va_arg (Args, unsigned int);
 689             if (Type & ACPI_FORMAT_SIGN)
 690             {
 691                 Number = (signed int) Number;
 692             }
 693         }
 694
 695         Pos = AcpiUtFormatNumber (Pos, End, Number, Base,
 696             Width, Precision, Type);
 697     }
 698
 699     if (Size > 0)
 700     {
 701         if (Pos < End)
 702         {
 703             *Pos = '\0';
 704         }
 705         else
 706         {
 707             End[-1] = '\0';
 708         }
 709     }
 710
 711     return (ACPI_PTR_DIFF (Pos, String));
 712 }
 713
 714
 715 /*******************************************************************************
 716  *
 717  * FUNCTION:    AcpiUtSnprintf
 718  *
 719  * PARAMETERS:  String              - String with boundary
 720  *              Size                - Boundary of the string
 721  *              Format, ...         - Standard printf format
 722  *
 723  * RETURN:      Number of bytes actually written.
 724  *
 725  * DESCRIPTION: Formatted output to a string.
 726  *
 727  ******************************************************************************/
 728
 729 int
 730 AcpiUtSnprintf (
 731     char                    *String,
 732     ACPI_SIZE               Size,
 733     const char              *Format,
 734     ...)
 735 {
 736     va_list                 Args;
 737     int                     Length;
 738
 739
 740     va_start (Args, Format);
 741     Length = AcpiUtVsnprintf (String, Size, Format, Args);
 742     va_end (Args);
 743
 744     return (Length);
 745 }
 746
 747
 748 #ifdef ACPI_APPLICATION
 749 /*******************************************************************************
 750  *
 751  * FUNCTION:    AcpiUtFileVprintf
 752  *
 753  * PARAMETERS:  File                - File descriptor
 754  *              Format              - Standard printf format
 755  *              Args                - Argument list
 756  *
 757  * RETURN:      Number of bytes actually written.
 758  *
 759  * DESCRIPTION: Formatted output to a file using argument list pointer.
 760  *
 761  ******************************************************************************/
 762
 763 int
 764 AcpiUtFileVprintf (
 765     ACPI_FILE               File,
 766     const char              *Format,
 767     va_list                 Args)
 768 {
 769     ACPI_CPU_FLAGS          Flags;
 770     int                     Length;
 771
 772
 773     Flags = AcpiOsAcquireLock (AcpiGbl_PrintLock);
 774     Length = AcpiUtVsnprintf (AcpiGbl_PrintBuffer,
 775         sizeof (AcpiGbl_PrintBuffer), Format, Args);
 776
 777     (void) AcpiOsWriteFile (File, AcpiGbl_PrintBuffer, Length, 1);
 778     AcpiOsReleaseLock (AcpiGbl_PrintLock, Flags);
 779
 780     return (Length);
 781 }
 782
 783
 784 /*******************************************************************************
 785  *
 786  * FUNCTION:    AcpiUtFilePrintf
 787  *
 788  * PARAMETERS:  File                - File descriptor
 789  *              Format, ...         - Standard printf format
 790  *
 791  * RETURN:      Number of bytes actually written.
 792  *
 793  * DESCRIPTION: Formatted output to a file.
 794  *
 795  ******************************************************************************/
 796
 797 int
 798 AcpiUtFilePrintf (
 799     ACPI_FILE               File,
 800     const char              *Format,
 801     ...)
 802 {
 803     va_list                 Args;
 804     int                     Length;
 805
 806
 807     va_start (Args, Format);
 808     Length = AcpiUtFileVprintf (File, Format, Args);
 809     va_end (Args);
 810
 811     return (Length);
 812 }
 813 #endif