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GP-1742 corrected ELF ARM-32 relocation adjustment for R_ARM_THM_JUMP11

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and R_ARM_THM_JUMP8
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ghidra1 2022-02-11 18:17:38 -05:00
parent 6c971322a2
commit 026fad27ab
1 changed files with 2 additions and 6 deletions
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8
Ghidra/Processors/ARM/src/main/java/ghidra/app/util/bin/format/elf/relocation/ARM_ElfRelocationHandler.java
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@ -573,9 +573,7 @@ public class ARM_ElfRelocationHandler extends ElfRelocationHandler {
addend = (oldValue << 21 >> 20); // extract addend and sign-extend with *2 factor
}
newValue = (int) (symbolValue + addend);
newValue -= (offset + 4); // PC relative, PC will be 4 bytes past inst start
newValue -= offset; // PC relative
newValue = (oldValue & 0x0000f800) | ((newValue >> 1) & 0x000007ff);
memory.setShort(relocationAddress, (short) newValue, instructionBigEndian);
break;
@ -586,9 +584,7 @@ public class ARM_ElfRelocationHandler extends ElfRelocationHandler {
addend = (oldValue << 24 >> 23); // extract addend and sign-extend with *2 factor
}
newValue = (int) (symbolValue + addend);
newValue -= (offset + 4); // PC relative, PC will be 4 bytes past inst start
newValue -= offset; // PC relative
newValue = (oldValue & 0x0000ff00) | ((newValue >> 1) & 0x000000ff);
memory.setShort(relocationAddress, (short) newValue, instructionBigEndian);
break;