This is (still) an MCU which doesn't have virtual memory translation lookaside buffer (TLB) for RAM.
There's a good reason to keep the stack(s) (remember - dual cores) so small in those RAM regions (SCRATCH_X and SCRATCH_Y). Those are both separate physical memories which can be accessed in parallel.
addr 0x1=Flash; 0x2=RAMAnd deeper:
There's a good reason to keep the stack(s) (remember - dual cores) so small in those RAM regions (SCRATCH_X and SCRATCH_Y). Those are both separate physical memories which can be accessed in parallel.
More detailed and meaningful structure and allocation can be seen with:IMPORTANT
Banking is a physical partitioning of SRAM which improves performance by allowing multiple simultaneous accesses. Logically there is a single 264kB contiguous memory.
addr 0x1=Flash; 0x2=RAM
Code:
arm-none-eabi-size -Ax file.elfsection size addr.text 0x4004 0x10000000.rodata 0x56c 0x10004008.ARM.exidx 0x8 0x10004574.binary_info 0x18 0x1000457c.ram_vector_table 0x110 0x20000000.uninitialized_data 0x0 0x20000110.data 0x854 0x20000110.tdata 0x0 0x20000964.tbss 0x0 0x20000964.bss 0x9f8 0x20000968.heap 0x7eca0 0x20001360.scratch_x 0x0 0x20080000.scratch_y 0x0 0x20081000.stack_dummy 0x800 0x20081000.flash_end 0x14 0x10004de8.ARM.attributes 0x34 0x0.comment 0x44 0x0.debug_info 0x21ca5 0x0.debug_abbrev 0x5b2b 0x0.debug_loclists 0xff9f 0x0.debug_aranges 0xc08 0x0.debug_rnglists 0x3175 0x0.debug_line 0x15cda 0x0.debug_str 0x59c9 0x0.debug_frame 0x2068 0x0.debug_line_str 0x286 0x0Total 0xddc95Code:
arm-none-eabi-readelf -a .file.elfStatistics: Posted by gmx — Sat Oct 05, 2024 1:27 am