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GP-555 Added support for R_ARM_MOVW_ABS_NC and R_ARM_MOVT_ABS elf

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relocations
This commit is contained in:
Matt Ihlenfield
2020-11-20 19:39:16 -05:00
committed by ghidra1
parent cfaf865567
commit 96fe213bfd
1 changed files with 20 additions and 4 deletions
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Ghidra/Processors/ARM/src/main/java/ghidra/app/util/bin/format/elf/relocation/ARM_ElfRelocationHandler.java
+20 -4
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@@ -344,12 +344,28 @@ public class ARM_ElfRelocationHandler extends ElfRelocationHandler {
case ARM_ElfRelocationConstants.R_ARM_PREL31: {
break;
}
case ARM_ElfRelocationConstants.R_ARM_MOVW_ABS_NC: {
break;
}
case ARM_ElfRelocationConstants.R_ARM_MOVT_ABS: {
*/
case ARM_ElfRelocationConstants.R_ARM_MOVW_ABS_NC:
case ARM_ElfRelocationConstants.R_ARM_MOVT_ABS: { // Target Class: ARM Instruction
oldValue = memory.getInt(relocationAddress, instructionBigEndian);
newValue = oldValue;
oldValue = ((oldValue & 0xf0000) >> 4) | (oldValue & 0xfff);
oldValue = (oldValue ^ 0x8000) - 0x8000;
oldValue += symbolValue;
if (type == ARM_ElfRelocationConstants.R_ARM_MOVT_ABS)
oldValue >>= 16;
newValue &= 0xfff0f000;
newValue |= ((oldValue & 0xf000) << 4) |
(oldValue & 0x0fff);
memory.setInt(relocationAddress, newValue, instructionBigEndian);
break;
}
/*
case ARM_ElfRelocationConstants.R_ARM_MOVW_PREL_NC: {
break;
}