common.s

Cortex-M4+example

        MOVS     R2,#+32
        SDIV     R3,R0,R2
        MLS      R3,R3,R2,R0
        LSLS     R0,R1,R3
        LDR.N    R1,??DataTable4_7  ;; 0xe000e108
        STR      R0,[R1, #+0]
//   81               break;
//   82     }              
//   83 }
??enable_irq_4:
        BX       LR               ;; return
//   84 
//   85 //-------------------------------------------------------------------------*
//   86 //函数名: disable_irq                                                      *
//   87 //功  能: 禁止irq中断                                                      * 
//   88 //参  数: irq:irq号       						   *	
//   89 //返  回: 无                                                               *
//   90 //说  明: irq号不是中断向量号                                              *
//   91 //-------------------------------------------------------------------------*

        SECTION `.text`:CODE:NOROOT(1)
        THUMB
//   92 void disable_irq (int irq)
//   93 {
//   94     int div;
//   95     
//   96     //确定irq号为有效的irq号
//   97     if (irq > 91)	irq=91;
disable_irq:
        CMP      R0,#+92
        BLT.N    ??disable_irq_0
        MOVS     R0,#+91
//   98     
//   99     //确定对应的NVICISER
//  100     div = irq/32;
??disable_irq_0:
        MOVS     R1,#+32
        SDIV     R1,R0,R1
//  101     
//  102     switch (div)
        CMP      R1,#+0
        BEQ.N    ??disable_irq_1
        CMP      R1,#+2
        BEQ.N    ??disable_irq_2
        BCC.N    ??disable_irq_3
        B.N      ??disable_irq_4
//  103     {
//  104     	case 0x0:
//  105                NVICICER0 = 1 << (irq%32);
??disable_irq_1:
        MOVS     R1,#+1
        MOVS     R2,#+32
        SDIV     R3,R0,R2
        MLS      R3,R3,R2,R0
        LSLS     R0,R1,R3
        LDR.N    R1,??DataTable4_8  ;; 0xe000e180
        STR      R0,[R1, #+0]
//  106               break;
        B.N      ??disable_irq_4
//  107     	case 0x1:
//  108               NVICICER1 = 1 << (irq%32);
??disable_irq_3:
        MOVS     R1,#+1
        MOVS     R2,#+32
        SDIV     R3,R0,R2
        MLS      R3,R3,R2,R0
        LSLS     R0,R1,R3
        LDR.N    R1,??DataTable4_9  ;; 0xe000e184
        STR      R0,[R1, #+0]
//  109               break;
        B.N      ??disable_irq_4
//  110     	case 0x2:
//  111               NVICICER2 = 1 << (irq%32);
??disable_irq_2:
        MOVS     R1,#+1
        MOVS     R2,#+32
        SDIV     R3,R0,R2
        MLS      R3,R3,R2,R0
        LSLS     R0,R1,R3
        LDR.N    R1,??DataTable4_10  ;; 0xe000e188
        STR      R0,[R1, #+0]
//  112               break;
//  113     }              
//  114 }
??disable_irq_4:
        BX       LR               ;; return

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4:
        DC32     0xe000ed10

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_1:
        DC32     0xe000ed08

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_2:
        DC32     0xe000e280

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_3:
        DC32     0xe000e100

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_4:
        DC32     0xe000e284

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_5:
        DC32     0xe000e104

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_6:
        DC32     0xe000e288

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_7:
        DC32     0xe000e108

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_8:
        DC32     0xe000e180

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_9:
        DC32     0xe000e184

        SECTION `.text`:CODE:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
??DataTable4_10:
        DC32     0xe000e188
//  115  
//  116 //-------------------------------------------------------------------------*
//  117 //函数名: set_irq_priority                                                 *
//  118 //功  能: 设置irq中断和优先级                                              * 
//  119 //参  数: irq:irq号         						   *	
//  120 //        prio:优先级						           *	
//  121 //返  回: 无                                                               *
//  122 //说  明: irq号不是中断向量号                                              *
//  123 //-------------------------------------------------------------------------*

        SECTION `.text`:CODE:NOROOT(1)
        THUMB
//  124 void set_irq_priority (int irq, int prio)
//  125 {
//  126     uint8 *prio_reg;
//  127 
//  128     //确定irq号和优先级有效
//  129     if (irq > 91)	irq=91;
set_irq_priority:
        CMP      R0,#+92
        BLT.N    ??set_irq_priority_0
        MOVS     R0,#+91
//  130     if (prio > 15)	prio=15;
??set_irq_priority_0:
        CMP      R1,#+16
        BLT.N    ??set_irq_priority_1
        MOVS     R1,#+15
//  131 
//  132     //确定对应的NVICISER
//  133     prio_reg = (uint8 *)(((uint32)&NVICIP0) + irq);
??set_irq_priority_1:
        ADD      R0,R0,#-536870912
        ADDS     R0,R0,#+58368
//  134     //设置优先级
//  135     *prio_reg = ( (prio&0xF) << (8 - ARM_INTERRUPT_LEVEL_BITS) );             
        LSLS     R1,R1,#+4
        STRB     R1,[R0, #+0]
//  136 }
        BX       LR               ;; return

        SECTION `.iar_vfe_header`:DATA:REORDER:NOALLOC:NOROOT(2)
        SECTION_TYPE SHT_PROGBITS, 0
        DATA
        DC32 0

        SECTION __DLIB_PERTHREAD:DATA:REORDER:NOROOT(0)
        SECTION_TYPE SHT_PROGBITS, 0

        SECTION __DLIB_PERTHREAD_init:DATA:REORDER:NOROOT(0)
        SECTION_TYPE SHT_PROGBITS, 0

        END
//  137 
// 
// 342 bytes in section .text
// 
// 342 bytes of CODE memory
//
//Errors: none
//Warnings: none