Part Number: IWRL6432
Dear TI,
I'm encountering an issue while attempting to declare a static array on L3 at compile time, and I've noticed some unexpected behavior concerning the image size. In theory, I would expect the image size to remain constant regardless of whether I'm using a C-style array or an std::array.
Here's a breakdown of what I'm trying to achieve:
C style: static uint8_t sL3MemoryBuffer[sL3Size_B] __attribute((section(".l3")));
std array: static std::array<uint8_t, sL3Size_B> sL3MemoryBuffer __attribute((section(".l3")))
Where sL3Size_B = 0x40000 + 160 * 1024. However, I'm encountering discrepancies in memory allocation as illustrated in the table below:
| Array | Image size (Bytes) | Init Length in memory map | Section allocation map input section |
|
C style |
251,524 | 00000000 | UNINITIALIZED |
|
std::array |
677,508 | 00068000 | blank |
I would greatly appreciate any insights or suggestions regarding why this discrepancy is occurring. Below, I've listed the compiler flags that I'm currently using:
tiarmclang.exe -c -mcpu=cortex-m4 -mfloat-abi=hard -mlittle-endian -mthumb -Wall -mno-unaligned-access -g3 -std=c++17 -fno-unwind-tables -fno-exceptions -fno-rtti -DSOC_XWRL64XX
I am presently unable to retrieve the linker flag output due to encountering difficulties with the verbosity flag. Please advise if you require this information, and I will make further attempts to resolve the issue.
