Question:
How to avoid Memory gaps inserted between different sections in L1 block?
Answer:
Global arrays must be aligned on a 64-bit word boundary or greater; the compiler will normally use this knowledge when optimizing accesses.
Please refer in the CCES help:
CrossCore
Embedded Studio 2.7.0 > SHARC Development Tools Documentation > C/C++ Compiler Manual for SHARC Processors > Compiler > C/C++ Run-Time Model and Environment > Global Array Alignment
For better understanding we provide the below example:
We have used the Memory and object section that you shared:
In source code:
#pragma section("In_Sec_a")
char element1; /* alignment 1 and 1 byte of padding */
#pragma section("In_Sec_a")
short element2; /* alignment 2 and no padding*/
#pragma section("In_Sec_b")
static float32_t element3[24137]; /* alignment 8 - stored in the location of 0x300008, since Global arrays address should be divisible by 8 */
By default, the compiler inserts any necessary padding to ensure that elements are aligned on their required boundaries.
This document was generated from the following discussion: Memory gaps inserted between different sections in L1 block
