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Get memory usage from elf file (esp8266 toolchain, using linker script from SDK)
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#!/bin/bash | |
# Print data, rodata, bss sizes in bytes | |
# | |
# Usage: | |
# OBJDUMP=../xtensa-lx106-elf/bin/xtensa-lx106-elf-objdump ./mem_usage.sh app.out [total_mem_size] | |
# | |
# If you specify total_mem_size, free heap size will also be printed | |
# For esp8266, total_mem_size is 81920 | |
# | |
if [ -z "$OBJDUMP" ]; then | |
echo "Please set OBJDUMP" | |
exit 1 | |
fi | |
objdump=$OBJDUMP | |
app_out=$1 | |
total_size=$2 | |
used=0 | |
function print_usage { | |
name=$1 | |
start_sym="_${name}_start" | |
end_sym="_${name}_end" | |
objdump_cmd="$objdump -t $app_out" | |
addr_start=`$objdump_cmd | grep " $start_sym" | cut -d " " -f1 | tr 'a-f' 'A-F'` | |
addr_end=`$objdump_cmd | grep " $end_sym" | cut -d " " -f1 | tr 'a-f' 'A-F'` | |
size=`printf "ibase=16\n$addr_end - $addr_start\n" | bc` | |
used=$(($used+$size)) | |
echo $name: $size | |
} | |
print_usage data | |
print_usage rodata | |
print_usage bss | |
echo total: $used | |
if [[ ! -z "$total_size" ]]; then | |
echo free: $(($total_size-$used)) | |
fi |
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