📄 usb_mem.s79
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//////////////////////////////////////////////////////////////////////////////
// /
// IAR ARM ANSI C/C++ Compiler V4.42A/W32 EVALUATION 10/Nov/2008 11:44:07 /
// Copyright 1999-2005 IAR Systems. All rights reserved. /
// /
// Cpu mode = thumb /
// Endian = little /
// Stack alignment = 4 /
// Source file = D:\资料\ST\ST\usb\USBLib\library\src\usb_mem.c /
// Command line = D:\资料\ST\ST\usb\USBLib\library\src\usb_mem.c -D /
// VECT_TAB_FLASH -D USE_STM3210E_EVAL -lA /
// D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\STM3210E-EVAL\List\ -o /
// D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\STM3210E-EVAL\Obj\ -z9 --debug /
// --cpu_mode thumb --endian little --cpu cortex-M3 /
// --stack_align 4 --require_prototypes --fpu None /
// --dlib_config "C:\Program Files\IAR /
// Systems\Embedded Workbench 4.0 /
// Evaluation\arm\LIB\dl7mptnnl8f.h" -I /
// D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\..\..\include\ -I /
// D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\..\..\..\..\library\inc\ -I /
// D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\..\..\..\..\..\FWLib\library\inc\ -I /
// "C:\Program Files\IAR Systems\Embedded Workbench /
// 4.0 Evaluation\arm\INC\" --inline_threshold=2 /
// List file = D:\资料\ST\ST\usb\USBLib\demos\Virtual_COM_Port\pro /
// ject\EWARMv4\STM3210E-EVAL\List\usb_mem.s79 /
// /
// /
//////////////////////////////////////////////////////////////////////////////
NAME usb_mem
RTMODEL "StackAlign4", "USED"
RTMODEL "__cpu_mode", "__pcs__thumb"
RTMODEL "__data_model", "absolute"
RTMODEL "__endian", "little"
RTMODEL "__rt_version", "6"
RSEG CSTACK:DATA:NOROOT(2)
??DataTable0 EQU 0
PUBLIC PMAToUserBufferCopy
FUNCTION PMAToUserBufferCopy,0203H
PUBLIC UserToPMABufferCopy
FUNCTION UserToPMABufferCopy,0203H
LOCFRAME CSTACK, 8, STACK
CFI Names cfiNames0
CFI StackFrame CFA R13 HUGEDATA
CFI Resource R0:32, R1:32, R2:32, R3:32, R4:32, R5:32, R6:32, R7:32
CFI Resource R8:32, R9:32, R10:32, R11:32, R12:32, R13:32, R14:32
CFI VirtualResource ?RET:32
CFI EndNames cfiNames0
CFI Common cfiCommon0 Using cfiNames0
CFI CodeAlign 2
CFI DataAlign 4
CFI ReturnAddress ?RET CODE
CFI CFA R13+0
CFI R0 Undefined
CFI R1 Undefined
CFI R2 Undefined
CFI R3 Undefined
CFI R4 SameValue
CFI R5 SameValue
CFI R6 SameValue
CFI R7 SameValue
CFI R8 SameValue
CFI R9 SameValue
CFI R10 SameValue
CFI R11 SameValue
CFI R12 Undefined
CFI R14 Undefined
CFI ?RET R14
CFI EndCommon cfiCommon0
// D:\资料\ST\ST\usb\USBLib\library\src\usb_mem.c
// 1 /******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
// 2 * File Name : usb_mem.c
// 3 * Author : MCD Application Team
// 4 * Version : V2.2.0
// 5 * Date : 06/13/2008
// 6 * Description : Utility functions for memory transfers to/from PMA
// 7 ********************************************************************************
// 8 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
// 9 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
// 10 * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
// 11 * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
// 12 * CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
// 13 * INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
// 14 *******************************************************************************/
// 15
// 16 /* Includes ------------------------------------------------------------------*/
// 17 #include "usb_lib.h"
// 18
// 19 /* Private typedef -----------------------------------------------------------*/
// 20 /* Private define ------------------------------------------------------------*/
// 21 /* Private macro -------------------------------------------------------------*/
// 22 /* Private variables ---------------------------------------------------------*/
// 23 /* Extern variables ----------------------------------------------------------*/
// 24 /* Private function prototypes -----------------------------------------------*/
// 25 /* Private functions ---------------------------------------------------------*/
// 26 /*******************************************************************************
// 27 * Function Name : UserToPMABufferCopy
// 28 * Description : Copy a buffer from user memory area to packet memory area (PMA)
// 29 * Input : - pbUsrBuf: pointer to user memory area.
// 30 * - wPMABufAddr: address into PMA.
// 31 * - wNBytes: no. of bytes to be copied.
// 32 * Output : None.
// 33 * Return : None .
// 34 *******************************************************************************/
RSEG CODE:CODE:NOROOT(2)
CFI Block cfiBlock0 Using cfiCommon0
CFI Function UserToPMABufferCopy
THUMB
// 35 void UserToPMABufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
// 36 {
// 37 u32 n = (wNBytes + 1) >> 1; /* n = (wNBytes + 1) / 2 */
// 38 u32 i, temp1, temp2;
// 39 u16 *pdwVal;
// 40 pdwVal = (u16 *)(wPMABufAddr * 2 + PMAAddr);
UserToPMABufferCopy:
LDR.N R3,??DataTable1 ;; 0x40006000
PUSH {R4,LR}
CFI ?RET Frame(CFA, -4)
CFI R4 Frame(CFA, -8)
CFI CFA R13+8
// 41 for (i = n; i != 0; i--)
ADDS R2,R2,#+1
ADDS R1,R3,R1, LSL #+1
ASRS R2,R2,#+1
B.N ??UserToPMABufferCopy_0
// 42 {
// 43 temp1 = (u16) * pbUsrBuf;
// 44 pbUsrBuf++;
// 45 temp2 = temp1 | (u16) * pbUsrBuf << 8;
// 46 *pdwVal++ = temp2;
??UserToPMABufferCopy_1:
LDRB R4,[R0, #+1]
LDRB R3,[R0, #+0]
// 47 pdwVal++;
// 48 pbUsrBuf++;
ADDS R0,R0,#+2
ORRS R3,R3,R4, LSL #+8
STRH R3,[R1], #+2
ADDS R1,R1,#+2
// 49 }
SUBS R2,R2,#+1
??UserToPMABufferCopy_0:
BNE.N ??UserToPMABufferCopy_1
// 50 }
POP {R4,PC} ;; return
CFI EndBlock cfiBlock0
// 51 /*******************************************************************************
// 52 * Function Name : PMAToUserBufferCopy
// 53 * Description : Copy a buffer from user memory area to packet memory area (PMA)
// 54 * Input : - pbUsrBuf = pointer to user memory area.
// 55 * - wPMABufAddr = address into PMA.
// 56 * - wNBytes = no. of bytes to be copied.
// 57 * Output : None.
// 58 * Return : None.
// 59 *******************************************************************************/
RSEG CODE:CODE:NOROOT(2)
CFI Block cfiBlock1 Using cfiCommon0
CFI Function PMAToUserBufferCopy
THUMB
// 60 void PMAToUserBufferCopy(u8 *pbUsrBuf, u16 wPMABufAddr, u16 wNBytes)
// 61 {
// 62 u32 n = (wNBytes + 1) >> 1;/* /2*/
// 63 u32 i;
// 64 u32 *pdwVal;
// 65 pdwVal = (u32 *)(wPMABufAddr * 2 + PMAAddr);
PMAToUserBufferCopy:
LDR.N R3,??DataTable1 ;; 0x40006000
// 66 for (i = n; i != 0; i--)
ADDS R2,R2,#+1
ADDS R1,R3,R1, LSL #+1
ASRS R2,R2,#+1
B.N ??PMAToUserBufferCopy_0
// 67 {
// 68 *(u16*)pbUsrBuf++ = *pdwVal++;
??PMAToUserBufferCopy_1:
LDR R3,[R1], #+4
// 69 pbUsrBuf++;
// 70 }
SUBS R2,R2,#+1
STRH R3,[R0], #+2
??PMAToUserBufferCopy_0:
BNE.N ??PMAToUserBufferCopy_1
// 71 }
BX LR ;; return
CFI EndBlock cfiBlock1
RSEG CODE:CODE:NOROOT(2)
DATA
??DataTable1:
DC32 0x40006000
END
// 72
// 73 /******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/
//
// 66 bytes in segment CODE
//
// 66 bytes of CODE memory
//
//Errors: none
//Warnings: none
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