ARM: Add support for "SUBS PC, LR and related instructions".

1 files changed, 5 insertions, 2 deletions

diff --git a/src/arch/arm/isa/formats/branch.isa b/src/arch/arm/isa/formats/branch.isa
index caf6f6227..45464018e 100644
--- a/src/arch/arm/isa/formats/branch.isa
+++ b/src/arch/arm/isa/formats/branch.isa
@@ -192,8 +192,11 @@ def format Thumb32BranchesAndMiscCtrl() {{
                   case 0x3c:
                     return new WarnUnimplemented("bxj", machInst);
                   case 0x3d:
-                    return new WarnUnimplemented("subs_pc_lr_and_rel_insts",
-                                                 machInst);
+                    {
+                        const uint32_t imm32 = bits(machInst, 7, 0);
+                        return new SubsImmPclr(machInst, INTREG_PC, INTREG_LR,
+                                               imm32, false);
+                    }
                   case 0x3e:
                   case 0x3f:
                     return new WarnUnimplemented("mrs", machInst);