TMS570LS0432: Interrupt and Exception Handle problem

whong zhao

Part Number: TMS570LS0432
Other Parts Discussed in Thread: TMS570LS3137

Hello

My program have safelibrary_lib and exception

void _excpt_vec_udef_instr()
#endif
#ifdef __IAR_SYSTEMS_ICC__
__irq __arm void _excpt_vec_udef_instr()
#endif
{
while(1);

}

But when I load my program,The program stops _excpt_vec_udef_instr directly，I don’t know where it is running ，found error.

CCS software "Resume" can't Click.

Now I want to know where I have errors in my program. No problem with program compilation and no special warnings.

Is there any way to find the error.

over 5 years ago

0 whong zhao over 5 years ago

Genius 4190 points

This is my cmd file

/* */
/*----------------------------------------------------------------------------*/
/* USER CODE BEGIN (0) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Linker Settings */

--retain="*(.intvecs)"
--entry_point=_c_int00

/* USER CODE BEGIN (1) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Memory Map */

MEMORY
{
VECTORS (X) : origin=0x00000000 length=0x00000020 fill = 0xffffffff
FLASH0 (RX) : origin=0x00000020 length=0x0005FFE0 fill = 0xffffffff
STACKS (RW) : origin=0x08000000 length=0x00002C00
RAM (RW) : origin=0x08003C00 length=0x00006B00

/* USER CODE BEGIN (2) */
/* USER CODE END */
}

/* USER CODE BEGIN (3) */
/* USER CODE END */

/*----------------------------------------------------------------------------*/
/* Section Configuration */

SECTIONS
{
.intvecs : START(ulFlashStartAddr) {} > VECTORS
.text : {} > FLASH0
.const : END(ulFlashEndAddr) {} > FLASH0
.cinit : {} > FLASH0
.pinit : {} > FLASH0
.STACK_DATA_svc : {. += 1024;} > STACKS, RUN_START(StackModeSVC)
.STACK_DATA_fiq : {. += 1024;} > STACKS, RUN_START(StackModeFIQ)
.STACK_DATA_irq : {. += 1024;} > STACKS, RUN_START(StackModeIRQ)
.STACK_DATA_abt : {. += 1024;} > STACKS, RUN_START(StackModeABT)
.STACK_DATA_und : {. += 1024;} > STACKS, RUN_START(StackModeUND)
.STACK_DATA_sys : {. += 1024;} > STACKS, RUN_START(StackModeSYS)
.bss : {} > RAM
.data : {} > RAM
.sysmem : {} > RAM

/* USER CODE BEGIN (4) */
/* USER CODE END */
}

0 whong zhao over 5 years ago in reply to whong zhao

Genius 4190 points

example ，but I see HAL soft RAM

0X08001000 leng 0x00000100

0x08001100 leng 0x00000100

。。。。。。

.STACK_DATA_svc : {. += 1024;} > STACKS, RUN_START(StackModeSVC)
.STACK_DATA_fiq : {. += 1024;} > STACKS, RUN_START(StackModeFIQ)
.STACK_DATA_irq : {. += 1024;} > STACKS, RUN_START(StackModeIRQ)
.STACK_DATA_abt : {. += 1024;} > STACKS, RUN_START(StackModeABT)
.STACK_DATA_und : {. += 1024;} > STACKS, RUN_START(StackModeUND)
.STACK_DATA_sys : {. += 1024;} > STACKS, RUN_START(StackModeSYS)

0x00000100 is 256，why cmd 1024

0 whong zhao over 5 years ago in reply to whong zhao

Genius 4190 points

0 QJ Wang over 5 years ago in reply to whong zhao

TI__Guru**** 199096 points

It is the exception of Undefined Instruction.

LS0432 is a fix point device, if you try to use the floating point instruction, it will generate UNDEF exception.

When a privileged mode is required, an instruction that attempts to access a CP15 register (for example SCTLR, PMU register) in a nonprivileged mode takes the Undefined Instruction exception.

When a number is divided by zero, it may generate UNDEF exception if DZ bit in SCTLR register is set.

0 whong zhao over 5 years ago in reply to QJ Wang

Genius 4190 points

Hello

How can I solve it？

above picture.. "is an assembly function"?

Is it missing some reference？

0 Sunil Oak over 5 years ago in reply to whong zhao

TI__Mastermind 49120 points

The sl_asm_api.asm file has the following code:

        .if	_VFP_SUPPORT_ = 1
        mrc   p15,     #0x00,      r2,       c1, c0, #0x02
        orr   r2,      r2,         #0xF00000
        mcr   p15,     #0x00,      r2,       c1, c0, #0x02
        mov   r2,      #0x40000000
        fmxr  fpexc,   r2

        fmdrr d0,         r1,     r1
        fmdrr d1,         r1,     r1
        fmdrr d2,         r1,     r1
        fmdrr d3,         r1,     r1
        fmdrr d4,         r1,     r1
        fmdrr d5,         r1,     r1
        fmdrr d6,         r1,     r1
        fmdrr d7,         r1,     r1
        fmdrr d8,         r1,     r1
        fmdrr d9,         r1,     r1
        fmdrr d10,        r1,     r1
        fmdrr d11,        r1,     r1
        fmdrr d12,        r1,     r1
        fmdrr d13,        r1,     r1
        fmdrr d14,        r1,     r1
        fmdrr d15,        r1,     r1
        .endif
        BX      LR
    .endasmfunc

The Undef instruction exception is caused by the first fmdrr instruction in the above conditional code. As you can see this code is conditional based on the _VFP_SUPPORT_ configuration. For TMS570LS0432 make sure that _VFP_SUPPORT_ is 0.

0 whong zhao over 5 years ago in reply to Sunil Oak

Genius 4190 points

Thank you

Yes I Define it Name in Predefined Symbols,because I see TMS570LS3137 make it

How to distinguish, which is setted 0,and which is 1

Where is the document

0 Sunil Oak over 5 years ago in reply to whong zhao

TI__Mastermind 49120 points

All pre-defined macro names are specified in the TI ARM compiler user guide: https://www.ti.com/lit/pdf/spnu151

Arm-based microcontrollers

Arm-based microcontrollers forum

TMS570LS0432: Interrupt and Exception Handle problem