Hello,
I am using the TMS470 Linker PC v4.9.0 for linking the project.
My problem is, that the linker places const (section .osconst) - data into ROM, but it does not show in the output file.
Looking at the MAP file, I've seen that this particular section is going to be initialized via cinit. I placed an excerpt and the bottom of this message.
As it is shown in the linker generated copy tables, the section .osconst is stated there. This table now tries to copy RLE compressed data from ROM to ROM, which is not going to work in my opinion.
Using the section .osconst as input section for .text is currently the only solution for my problem.
My questions is, why this section is initialized by cinit? Is there a way to disable this for this particular section?
Thanks, Erich
MAP-FILE:
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******************************************************************************
TMS470 Linker PC v4.9.0
******************************************************************************
>> Linked Mon Jul 02 10:33:12 2012
OUTPUT FILE NAME: <MMU-SCM_DEBUGGING.out>
ENTRY POINT SYMBOL: "_c_int00" address: 00047c68
MEMORY CONFIGURATION
name origin length used unused attr fill
---------------------- -------- --------- -------- -------- ---- --------
JMPVECTORS 00000000 00000020 00000018 00000008 X
HEADER 00020000 00000080 00000008 00000078 R
VECTORS 00020080 00000200 000001a4 0000005c R X
DSW 00020280 0015fd70 00040940 0011f430 R X
PRESENCEFLAG 0017fff0 00000010 00000008 00000008 R
FLASH3 00180000 00080000 00000000 00080000 R X
STACKS 08000000 00001000 00000000 00001000 RW
RAM 08001000 0003efff 00010918 0002e6e7 RW
SEGMENT ALLOCATION MAP
run origin load origin length init length attrs members
---------- ----------- ---------- ----------- ----- -------
00000000 00000000 00000018 00000018 r-x
00000000 00000000 00000018 00000018 r-x .jmpvectors
00020000 00020000 00000008 00000008 r--
00020000 00020000 00000008 00000008 r-- .APPLHEADER
00020080 00020080 000001a4 000001a4 r-x
00020080 00020080 00000004 00000004 r-x .osresetvect
00020084 00020084 00000018 00000018 r-x .osarmvect
0002009c 0002009c 00000188 00000188 r-- .osvtable
00020280 00020280 000399b8 000399b8 r-x
00020280 00020280 0000094c 0000094c r-- .osconfig
00020bcc 00020bcc 00027cb8 00027cb8 r-x .text
00048884 00048884 000113b4 000113b4 r-- .const
00059c38 00059c38 00000a60 00000a60 rw-
00059c38 00059c38 00000a60 00000a60 rw- .osconst
0005a698 0005a698 00006524 00006524 r-x
0005a698 0005a698 00005eb0 00005eb0 r-x .oscode
00060548 00060548 00000670 00000670 r-- .cinit
00060bb8 00060bb8 00000004 00000004 r-- .APPLTRAILER
0017fff0 0017fff0 00000008 00000008 r--
0017fff0 0017fff0 00000008 00000008 r-- .PRESENCEFLAG
08001000 08001000 00007888 00007888 rw-
08001000 08001000 00007888 00007888 rw- .data
08009000 08009000 00009090 00009090 rw-
08009000 08009000 00009090 00009090 rw- .bss
LINKER GENERATED COPY TABLES
__TI_cinit_table @ 00060ba0 records: 3, size/record: 8, table size: 24
.osconst: load addr=00060548, load size=00000489 bytes, run addr=00059c38, run size=00000a60 bytes, compression=rle
.data: load addr=000609d8, load size=000001a1 bytes, run addr=08001000, run size=00007888 bytes, compression=rle
.bss: load addr=00060b80, load size=00000018 bytes, run addr=08009000, run size=00009090 bytes, compression=rle
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LINKER COMMAND FILE:
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/****************************************************************************************/
#define STARTUP_STACK_SIZE 0x00001000
#define RAM_SIZE 0x0003FFFF
/****************************************************************************************/
/* SPECIFY THE SYSTEM MEMORY MAP for PSFC61 */
/****************************************************************************************/
MEMORY
{
/* BANK 0 */
JMPVECTORS (X) : origin=0x00000000 length=0x00000020 /* Dummy JMPVECTORS section can be removed if FBL is integrated */
HEADER (R) : origin=0x00020000 length=0x00000080 /* */
VECTORS (RX) : origin=0x00020080 length=0x00000200 /* Interrupt Vectors are placed here */
DSW (RX) : origin=0x00020280 length=0x0015FD70 /* Application space for driving software */
PRESENCEFLAG (R) : origin=0x0017FFF0 length=0x00000010 /* Last 16 Byte are for the presence flag and MASK. Needed by the FBL */
/* BANK 1 */
FLASH3 (RX) : origin=0x00180000 length=0x00080000
/* TCM RAM */
STACKS (RW) : origin=0x08000000 length=STARTUP_STACK_SIZE /* Stacks used by ... */
RAM (RW) : origin=START(STACKS)+SIZE(STACKS) length=(RAM_SIZE - SIZE(STACKS))
}
/****************************************************************************************/
/****************************************************************************************/
/* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */
/****************************************************************************************/
SECTIONS
{
/* ROM */
.jmpvectors : {} > JMPVECTORS /* Substitude FBL */
.APPLHEADER : {} > HEADER
GROUP (VECTORS) :
{
.osresetvect /* INTERRUPT VECTORS for RESET */
.osarmvect /* INTERRUPT VECTORS for ARM */
.osvtable /* INTERRUPT VECTORS for VIM */
} load=VECTORS
.osconfig : {} > 0x00020280
.text : { } > DSW
.osconst : { } > DSW
.const : { } > DSW
GROUP(APPLICATION) : palign(4)
{
.oscode
.cinit
.pinit
.APPLTRAILER
} > DSW
.PRESENCEFLAG : palign(4) {} > PRESENCEFLAG /* This is the presence flag the FBL normaly writes. For using it with the debugger we place it here */
/* END ROM */
/* RAM */
.stack : {
_StackUSER_ = .+ (SIZE(STACKS) - (256+128+128+128+128));
_StackFIQ_ = _StackUSER_ + 128;
_StackIRQ_ = _StackFIQ_ + 256;
_StackABORT_ = _StackIRQ_ + 128;
_StackUND_ = _StackABORT_ + 128;
_StackSUPER_ = _StackUND_ + 128;
} > STACKS /* SOFTWARE SYSTEM STACK */
.bss : {
#include "..\GenData\BSW\osobjs.inc"
*(.osstack)
*(.bss)
} > RAM /* GLOBAL & STATIC VARS */
.data : {
#include "..\GenData\BSW\osobjs_init.inc"
*(.data)
} > RAM /* INITIALIZED DATA */
/* END RAM */
}
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