Cortex-M7——ARMCC编译器

Cortex-M7——ARMCC编译器

小狼@http://blog.youkuaiyun.com/xiaolangyangyang

---

一、链接脚本（ld.scat）

IRAM 0x00000000 0x80000
{
    IRAM 0x00000000 0x80000
    {
        *.o (.isr_vector, +First)
        *(InRoot$$Sections)
        .ANY (+RO)
        .ANY (+XO)
    }

    DRAM 0x20000000 0x20000
    {
        .ANY (+RW +ZI)
    }

    ARM_LIB_STACKHEAP 0x0 EMPTY 0
    {
    }
}

二、启动代码

  .syntax unified
  .cpu cortex-m7
  .fpu softvfp
  .thumb

.global  g_pfnVectors
.global  Default_Handler

.word  Load$$DRAM$$Base
.word  Image$$DRAM$$Base
.word  Image$$DRAM$$Length

.word  Image$$DRAM$$ZI$$Base
.word  Image$$DRAM$$ZI$$Length

  .section  .text.Reset_Handler
  .type  Reset_Handler, %function
Reset_Handler:
  ldr   sp, =0x20020000      /* set stack pointer */
  movs  r1, #0
  b  LoopCopyDataInit

CopyDataInit:
  ldr  r3, =Load$$DRAM$$Base
  ldr  r3, [r3, r1]
  str  r3, [r0, r1]
  adds  r1, r1, #4

Lo