天使之翼

最近在使用链接脚本变量的时候遇到一个问题，示例如下：uint32_t *gps_ram_end = (uint32_t *)&_ereserdata;uint32_t *gps_ram_start = (uint32_t *)&_sreserdata;uint32_t len = gps_ram_end - gps_ram_start;虽然gps_ram_end = 0x10800， gps_ram_start = 0x10000，但是len的值却是512，后来尝试使用下

Hence when you are using a linker script defined symbol in source code you should alwaystake the address of the symbol, and never attempt to use its value. For example supposeyou want to copy the contents of a section of memory called .ROM into a section

section: .text .data .bss .rodata stack heap, user-defined section.text code.data global and static init variable, 即占文件空间，又占用运行时内存空间的.bss uninit global and static variable只占运行时的内存空间，而不占文件空间.rodata const dataStack local variable and paramH

Output Section Descriptionsection [address] [(type)] :[AT(lma)][ALIGN(section_align)][SUBALIGN(subsection_align)][constraint]{output-section-commandoutput-section-command…} [>region] [AT&...

Every loadable or allocatable output section has two addresses. The first is the VMA, orvirtual memory address. This is the address the section will have when the output file isrun. The second is th...