Part Number: TDA4VM-Q1
Hi,
I tried to optimize our project by setting compilation mode from ARM to THUMB-2. I updated the compilation option -- code_state from 32 to 16 and specified __ARM_ARCH_ISA_THUMB=2 to enable THUMB-2 mode.
And I noted that there are some .asm codes which is provided by Vector are actually causing compilation error shown as the below:
"../../output/build/obj/third-party/vector-microsar/Components/Os/Implementation/Os_Trap.asm", ERROR! at line 3435:
[E0004]
Specifying R15 as an operand is illegal
add r1, pc, #0x4 ; [KEEP 32-BIT INS]
Errors in Source - Assembler Aborted
make[1]: *** [../../../tools/application-build/MakeSupport/Global.Makefile.target.4.mk:1135: ../../output/build/obj/third-party/vector-microsar/Components/Os/Implementation/Os_Trap.o] Error 1
make: *** [../../../tools/application-build/MakeSupport/Global.Makefile.target.4.mk:435: rebuild] Error 2
And the corresponding source code is shown as below:
/* ECO_IGNORE_BLOCK_BEGIN */
__attribute__((noinline))
static void Os_Hal_SysCallTwoLevel(volatile uint32 TrapPacket, volatile uint32 RegBlock)
{
asm(" add r1, pc, #0x4 \n"
" svc #0 \n"
" nop \n"
" nop \n");
}
/* ECO_IGNORE_BLOCK_END */
It is working with ARM mode but failing with THUMB-2. I have asked Vector support and got the reply "The asm code should be compatible with Thumb-2 instruction set and the compilation error might be caused by the TI compiler". And I found another question Assembly Code Porting but still have no idea.
Is the above asm code not applied on THUMB-2 mode? Any idea about this?
By the way, the compiler base is ti-cgt-arm_20.2.4.LTS.
Thanks a lot.
