Re: [ECOS] elf to binary conversion problem

[Max Salov <amx at me dot by>]

Andrew Lunn ?????:
> The .data segment is your problem. It is much higher in memory, so
> objdump is putting 0's in the middle.
>
> You might have a RAM application which you are trying to ROM?  Or your
> ROM linker scripts are broken.
>
>    Andrew
Thanks, Andrew, for help.
Problem was in linker script.
Data and bss sections were defined
    SECTION_got (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_sram (sram, 0x20000400,  LMA_EQ_VMA)
    SECTION_data (sram, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_bss (sram, ALIGN (0x8), LMA_EQ_VMA)
I've changed it to
    SECTION_got (flash, ALIGN (0x8), LMA_EQ_VMA)
    SECTION_sram (sram, 0x20000400,  FOLLOWING (.got))
    SECTION_data (sram, ALIGN (0x8), FOLLOWING (.sram))
    SECTION_bss (sram, ALIGN (0x8), LMA_EQ_VMA)
But I'm not sure if it is completely correct.
Whole script(20k sram, 128k flash):
// eCos memory layout

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

MEMORY
{
    sram  : ORIGIN = 0x20000000, LENGTH = 
0x00005000-CYGNUM_HAL_COMMON_INTERRUPTS_STACK_SIZE
    flash : ORIGIN = 0x08000000, LENGTH = 0x00020000
}

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 (sram, ALIGN (0x8), FOLLOWING (.sram))
    SECTION_bss (sram, 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*20;

	Max

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