usbgetdescriptorrequest.lst

本代bootloader通过usb下载代码首先存放在sdram中

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# IAR ARM ANSI C/C++ Compiler V5.11.0.20622/W32 EVALUATION                    #
# Copyright 1999-2007 IAR Systems. All rights reserved.                       #
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#    Source file  =  E:\workplace\bootloaderOK\at91lib\usb\common\core\USBGet #
#                    DescriptorRequest.c                                      #
#    Command line =  E:\workplace\bootloaderOK\at91lib\usb\common\core\USBGet #
#                    DescriptorRequest.c -D at91sam7se512 -D flash -D         #
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#                    project\ewp\at91sam7se512_flash\List\USBGetDescriptorReq #
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E:\workplace\bootloaderOK\at91lib\usb\common\core\USBGetDescriptorRequest.c
      1          /* ----------------------------------------------------------------------------
      2           *         ATMEL Microcontroller Software Support 
      3           * ----------------------------------------------------------------------------
      4           * Copyright (c) 2008, Atmel Corporation
      5           *
      6           * All rights reserved.
      7           *
      8           * Redistribution and use in source and binary forms, with or without
      9           * modification, are permitted provided that the following conditions are met:
     10           *
     11           * - Redistributions of source code must retain the above copyright notice,
     12           * this list of conditions and the disclaimer below.
     13           *
     14           * Atmel's name may not be used to endorse or promote products derived from
     15           * this software without specific prior written permission.
     16           *
     17           * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
     18           * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19           * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
     20           * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
     21           * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22           * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
     23           * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     24           * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     25           * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     26           * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27           * ----------------------------------------------------------------------------
     28           */
     29          
     30          /*
     31              Title: USBGetDescriptorRequest implementation
     32          
     33              About: Purpose
     34                  Implementation of the USBGetDescriptorRequest class.
     35          */
     36          
     37          //------------------------------------------------------------------------------
     38          //         Headers
     39          //------------------------------------------------------------------------------
     40          
     41          #include "USBGetDescriptorRequest.h"
     42          
     43          //------------------------------------------------------------------------------
     44          //         Exported functions
     45          //------------------------------------------------------------------------------
     46          
     47          //------------------------------------------------------------------------------
     48          /// Returns the type of the descriptor requested by the host given the
     49          /// corresponding GET_DESCRIPTOR request.
     50          /// \param request Pointer to a USBGenericDescriptor instance.
     51          /// \return Type of the requested descriptor.
     52          //------------------------------------------------------------------------------

   \                                 In section .text, align 4, keep-with-next
     53          unsigned char USBGetDescriptorRequest_GetDescriptorType(
     54              const USBGenericRequest *request)
     55          {
   \                     USBGetDescriptorRequest_GetDescriptorType:
   \   00000000   01402DE9           PUSH     {R0,LR}
     56              // Requested descriptor type is in the high-byte of the wValue field
     57              return (USBGenericRequest_GetValue(request) >> 8) & 0xFF;
   \   00000004   ........           BL       USBGenericRequest_GetValue
   \   00000008   2004A0E1           LSR      R0,R0,#+8
   \   0000000C   0050BDE8           POP      {R12,LR}
   \   00000010   1EFF2FE1           BX       LR               ;; return
     58          }
     59          
     60          //------------------------------------------------------------------------------
     61          /// Returns the index of the requested descriptor, given the corresponding
     62          /// GET_DESCRIPTOR request.
     63          /// \param request Pointer to a USBGenericDescriptor instance.
     64          /// \return Index of the requested descriptor.
     65          //------------------------------------------------------------------------------

   \                                 In section .text, align 4, keep-with-next
     66          unsigned char USBGetDescriptorRequest_GetDescriptorIndex(
     67              const USBGenericRequest *request)
     68          {
   \                     USBGetDescriptorRequest_GetDescriptorIndex:
   \   00000000   01402DE9           PUSH     {R0,LR}
     69              // Requested descriptor index if in the low byte of the wValue field
     70              return USBGenericRequest_GetValue(request) & 0xFF;
   \   00000004   ........           BL       USBGenericRequest_GetValue
   \   00000008   FF0000E2           AND      R0,R0,#0xFF
   \   0000000C   0050BDE8           POP      {R12,LR}
   \   00000010   1EFF2FE1           BX       LR               ;; return
     71          }
     72          

   Maximum stack usage in bytes:

     Function                       .cstack
     --------                       -------
     USBGetDescriptorRequest_GetDescriptorIndex
                                         8
     USBGetDescriptorRequest_GetDescriptorType
                                         8


   Section sizes:

     Function/Label                 Bytes
     --------------                 -----
     USBGetDescriptorRequest_GetDescriptorType
                                      20
     USBGetDescriptorRequest_GetDescriptorIndex
                                      20

 
 40 bytes in section .text
 
 40 bytes of CODE memory

Errors: none
Warnings: none