How to assign a data segment of a c file to a specific location in an l3k file

[yeyuan1]

hello everyone

            The platform I use is B4860。

            My requirements are as follows：

            I want to define the data segment in the alloc.c file to a fixed section of memory that is unique to alloc.c.

             The normal data segment is defined as follows：

              descriptor__ddr__cacheable_wb__sys__private__data {
                             .struct_start
                             .ddr__cacheable_wb__sys__private__data
                             .bsstab
                             ".c?_bss_sections_table"
                             .init_table
                             .rom_init
                             .rom_init_tables
                             .exception
                             .exception_index
                             .staticinit
                             .zdata
                             reserved_crt_tls
                            .data

                            .mydata
                            .ddr__cacheable_wb__sys__private__rom
                            //LNK_SECTION(heap, "rw", _HeapSize, 0x8, "heap");
                            .bss
                            .ddr__cacheable_wb__sys__private__bss
                  } > ddr_private_data_c_wb;

                A lot of data from c files will be output to this data segment

               This is not what I want

              I want the data section of the alloc.c file to be exported to mydata，the data segment of any other file cannot be exported to mydata.

               What should I do, please?    Or is there a reference document?

Thank you all

[yeyuan1 · Accepted solution]

My requirement can be achieved with the following method

RENAME "*rtlib_be_x.elb(alloc.eln)", ".text", ".lib_text"

This sentence means Define the code segment of alloc.c to the section's .lib_text

[yeyuan1]

Can you give me some more advice?

thank you

[yipingwang]

In CodeWarrior for PA 10.5, please create a bareboard project for B4860QDS from File->New->CodeWarrior Bareboard Project Wizard, then build this project from Project->Build Project.

Please refer to __CTOR_LIST__ and __CTOR_END__ definition in section ".ctors" in file __start_e6500_32bit_crt0.c.

Please refer to section ".ctors" definition in LCF file B4860QDS_gcc-aeabi_SMP_ROM.lcf.

[yipingwang]

Please refer to the section "Additional Small Data Sections" in the attached document.

[yeyuan1]

Thank you for your answer, but this may not meet my needs

The documentation describes it as follows.

As you can see from the documentation, this way is defining the x variable to the .red piece of memory, which is not the problem I need to solve.

I need to define the data in the C standard library file alloc.c to a specific memory. The c standard library file cannot be modified, so it can only be modified by the l3k file.

Other platforms are implemented as follows：

outsection {

     alloc.obj(.data)

 } > mydata

Other platforms are implemented in such a way that the data in alloc.c is defined to mydata.

So please ask the B4860 if it can achieve such a function?

Thanks again for your answer

Please help me to solve this problem

[yeyuan1]

                Please help me to resolve this issue.

thank you