ecos-mtk_ecos_ecos stm32

早期接触eCos内存布局文件时，对它只是朦朦胧胧的理解，比较肤浅。ecos然而通过本次对eCos布局文件的深入分析，发现对它有了更加深刻的理解。相信大家对比前后的文章就可以看得出来。

内存布局文件内容分析

ldi文件内容大同小异。以mlt_cortexm_stm3210e_eval_rom.ldi文件进行说明，内容如下：

// eCos memory layout

#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.inc>

MEMORY
{
    sram  : ORIGIN = 0x20000000, LENGTH = 0x00010000-CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
    flash : ORIGIN = 0x08000000, LENGTH = 0x00080000
    rom   : ORIGIN = 0x64000000, LENGTH = 0x01000000
    ram   : ORIGIN = 0x68000000, LENGTH = 0x00100000
}

SECTIONS
{
    SECTIONS_BEGIN
    SECTION_rom_vectors (flash, 0x08000000, LMA_EQ_VMA)
    SECTION_RELOCS (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_text (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_fini (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_rodata (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_rodata1 (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_fixup (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_gcc_except_table (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_eh_frame (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_got (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_sram (sram, 0x20000400, FOLLOWING (.got))
    SECTION_data (ram, 0x68000000, FOLLOWING (.sram))
    SECTION_bss (ram, ALIGN (0x8), LMA_EQ_VMA)
    CYG_LABEL_DEFN(__heap1) = ALIGN (0x8);
    SECTIONS_END
}

hal_vsr_table = 0x20000000;
hal_virtual_vector_table = hal_vsr_table + 128*4;
hal_startup_stack = 0x20000000 + 1024*64;

ldi文件分为4部分。

第1部分：包含头文件部分，包含下面两个头文件：

#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.inc>

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