c6657 map file and ISA, PLAT, TARG and TRDR

RandyP,

Thanks for the answer.  I see that they are not overlapping with my memory buffer.

Regards,

Fawad

Hello.

In my case, the "TRDR" is placed like below.

008000b8   __TRDR__
00880010   ti_sysbios_knl_Task_Instance_State_0_hookEnv__A

I have 3 questions.

1. Is the TRDR occupying memory as about 500KB.

2. What is role of the TRDR?

3. How can I reduce the TRDR?

Hui-kwon Yang,

The answer I gave above still applies to your question. These are just symbols whose value may or may not be related to address space. You must look at the allocation of sections higher up in the linker output .map file to see what is actually occupying memory.

Regards,
RandyP

Dear RandyP

Thank you for your response.

In my .map file,

I think the next section of __TRDR__ is ti_sysbios_knl_Task_Instance_State_0_hookEnv__A

So, I thought the TRDR is occupying  about 500KB. Am I wrong?

Thus, what is in between "__TRDR__" and "ti_sysbios_knl_Task_Instance_State_0_hookEnv__A"?

Thanks

Additionally,

I attach a part of the map file below.

-------------------------------------------------------------------

GLOBAL SYMBOLS: SORTED BY Symbol Address

.....

00800058   __ISA__
00800070   __PLAT__
00800090   __TARG__
008000b8   __TRDR__
00880010   ti_sysbios_knl_Task_Instance_State_0_hookEnv__A
00880018   ti_sysbios_knl_Task_Instance_State_1_hookEnv__A
00880020   xdc_runtime_LoggerBuf_Instance_State_0_entryArr__A

.....

Hui-kwon Yang,

The GLOBAL SYMBOLS section is only a list of symbols. This is not the same as a memory allocation listing. You may want to refer to the Linker section of the Assembly Language Tools User Guide for more information on the linker.map file's contents so you will understand the information displayed there.

You must look at the SECTION ALLOCATION MAP higher up in the linker output .map file to see what is actually occupying memory. It looks like this:

SECTION ALLOCATION MAP

 output                                  attributes/
section   page    origin      length       input sections
--------  ----  ----------  ----------   ----------------

.text      0    c0000000    0000cc80     
                  c0000000    000008c0     ti.targets.rts6000.a674 : System.o674 (.text:_xdc_runtime_System_doPrint__I)
                  c00008c0    00000780     sysbios.a674 : BIOS.obj (.text:_ti_sysbios_family_c64p_Exception_handler__I)
                  c0001040    00000660                  : BIOS.obj (.text:_ti_sysbios_heaps_HeapMem_alloc__E)
                  c00016a0    00000600                  : BIOS.obj (.text:_ti_sysbios_knl_Semaphore_pend__E)

The table above does show memory allocation. The GLOBAL SYMBOLS listing does not show memory allocation. These are only symbols that are used for one reason or another. I do not know what __TRDR__ is used for.

Regards,
RandyP