Other Parts Discussed in Thread: TMS320F28069
We have an issue with the code generation tools for Piccolo 28069 (TI v6.0.1). The issue shows up when using compiler optimization 2 or larger. I generated a short program to reproduce the issue. From the macro generated code, I removed statements and operations as long as the issue shows. Please contact me for a solution or workaround.
Thanks
Andreas
Compiler & Platform:
- C2000 C/C++ CODE GENERATION TOOLS 6.0.1
- Piccolo TMS320F28069
------------------------------------------------------------------------------------
Test program:
#include <string.h>
typedef struct
{
unsigned short hdr;
unsigned short payload[2];
} pkt_t ;
void main(void)
{
pkt_t pkt;
memset(&pkt,0,sizeof(pkt_t));
__byte((int*)pkt.payload, 0) = (0x0 & __byte((int*)pkt.payload, 0));
}
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Output:
_main:
ADDB SP,#4 ; [CPU_U]
MOVZ AR4,SP ; [CPU_U] |14|
SUBB XAR4,#3 ; [CPU_U] |14|
RPT #2
|| MOV *XAR4++,#0 ; [CPU_] |14|
MOVB AL,#0 ; [CPU_]
MOVB *+XAR5[0],AL.LSB ; [CPU_] |15|
SUBB SP,#4 ; [CPU_U]
LRETR ; [CPU_]
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Problem:
- XAR5 does not get initialized before use. Value written to wrong memory location.
