patchtblc.s

来自「《嵌入式固件开发》一书的源码」· S 代码 · 共 52 行

/*
 *
 *  File Name:   patchtblc.s
 *
 *  Function:    File that reserves space in the .text section so that
 *               the patch utility can use it for fixing 405GP rev C errata.
 *
 *  Author:      M. Game
 *
 *  Change Activity-
 *
 *  Date        Description of Change                                       BY
 *  ---------   ---------------------                                       ---
 *  14-Jun-99   Created                                                     MCG
 *  21-Mar-00   Modified for rev C                                           NL
 *
 *


 * To reserve the appropriate amount of space in "patch_tbl", modify the
 * constant PATCH_ENTRIES below to reflect the number of load/store with
 * update instruction pairs in the application.
 *
 * To determine how many of these situations exist in an application, run the
 * patch utility against the application with PATCH_ENTRIES set to 1.  The
 * initial run of the patch utility will then tell you the exact value to set
 * PATCH_ENTRIES for the application.  PATCH_ENTRIES can be set to a larger
 * value than required if desired.
 */



        .set PATCH_ENTRIES, 40


/*
 *#############################################################################
 *#################### DO NOT MODIFY BELOW THIS POINT #########################
 *#############################################################################
 */

        .text
        .align  2                           /* must be on a 4 byte boundary */
        .globl  patchtbc

patchtbc:
        .space  PATCH_ENTRIES*64            /* 64 bytes for each patch */
        .type  patchtbc,@function
        .size  patchtbc,.-patchtbc