Elf.scala sync

SpinalHDL · Aug 23, 2024 · 5e02bf7 · 5e02bf7
1 parent 1cc2b23
commit 5e02bf7
Showing 1 changed file with 36 additions and 0 deletions.
diff --git a/src/main/scala/spinal/lib/misc/Elf.scala b/src/main/scala/spinal/lib/misc/Elf.scala
@@ -2,6 +2,7 @@ package spinal.lib.misc
 
 import net.fornwall.jelf.{ElfFile, ElfSection, ElfSectionHeader, ElfSymbol, ElfSymbolTableSection}
 import spinal.lib.sim.SparseMemory
+import spinal.core._
 
 import java.io.File
 import java.nio.file.Files
@@ -41,6 +42,41 @@ class Elf(val f : File, addressWidth : Int){
  }
  }
 
+
+ def getMemInit[T <: Data](ram: Mem[T],offset: BigInt, allowOverflow: Boolean = false) = {
+ val wordSize = ram.wordType.getBitsWidth / 8
+ val initContent = Array.fill[BigInt](ram.wordCount)(0)
+ foreachSection { section =>
+ if ((section.header.sh_flags & ElfSectionHeader.FLAG_ALLOC) != 0) {
+ val data = getData(section)
+ val memoryAddress = (section.header.sh_addr - offset) & ((BigInt(1) << addressWidth) - 1).toLong
+ for((byte, i) <- data.zipWithIndex){
+ val addressWithoutOffset = memoryAddress+i
+ val addressWord = addressWithoutOffset / wordSize
+ if (addressWord < 0 || addressWord >= initContent.size) {
+ assert(allowOverflow)
+ } else {
+ initContent(addressWord.toInt) |= BigInt(byte.toInt & 0xFF) << ((addressWithoutOffset.toInt % wordSize) * 8)
+ }
+ }
+ }
+ }
+ initContent
+ }
+
+ def init[T <: Data](ram: Mem[T], offset: BigInt, allowOverflow: Boolean = false): Unit = {
+ val initContent = getMemInit(ram, offset, allowOverflow)
+ ram.initBigInt(initContent)
+ }
+
+ def load[T <: Data](ram: Mem[T], offset: BigInt, allowOverflow: Boolean = false): Unit = {
+ val initContent = getMemInit(ram, offset, allowOverflow)
+ import spinal.core.sim._
+ for((e, i) <- initContent.zipWithIndex){
+ ram.setBigInt(i, e)
+ }
+ }
+
  def getSymbolAddress(name : String): Long ={
  val s = getELFSymbol(name)
  s.st_value