[llvm-commits] [llvm] r156077 - in /llvm/trunk: lib/Target/ARM/Disassembler/ARMDisassembler.cpp test/MC/Disassembler/ARM/fp-encoding.txt

[Silviu Baranga]

Author: sbaranga
Date: Thu May  3 11:38:40 2012
New Revision: 156077

URL: http://llvm.org/viewvc/llvm-project?rev=156077&view=rev
Log:
Fixed disassembler for vstm/vldm ARM VFP instructions.

Modified:
    llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
    llvm/trunk/test/MC/Disassembler/ARM/fp-encoding.txt

Modified: llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp?rev=156077&r1=156076&r2=156077&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp (original)
+++ llvm/trunk/lib/Target/ARM/Disassembler/ARMDisassembler.cpp Thu May  3 11:38:40 2012
@@ -1224,8 +1224,8 @@
                                  uint64_t Address, const void *Decoder) {
   DecodeStatus S = MCDisassembler::Success;
 
-  unsigned Vd = fieldFromInstruction32(Val, 8, 4);
-  unsigned regs = Val & 0xFF;
+  unsigned Vd = fieldFromInstruction32(Val, 8, 5);
+  unsigned regs = fieldFromInstruction32(Val, 0, 8);
 
   if (!Check(S, DecodeSPRRegisterClass(Inst, Vd, Address, Decoder)))
     return MCDisassembler::Fail;
@@ -1241,8 +1241,10 @@
                                  uint64_t Address, const void *Decoder) {
   DecodeStatus S = MCDisassembler::Success;
 
-  unsigned Vd = fieldFromInstruction32(Val, 8, 4);
-  unsigned regs = (Val & 0xFF) / 2;
+  unsigned Vd = fieldFromInstruction32(Val, 8, 5);
+  unsigned regs = fieldFromInstruction32(Val, 0, 8);
+
+  regs = regs >> 1;
 
   if (!Check(S, DecodeDPRRegisterClass(Inst, Vd, Address, Decoder)))
       return MCDisassembler::Fail;

Modified: llvm/trunk/test/MC/Disassembler/ARM/fp-encoding.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Disassembler/ARM/fp-encoding.txt?rev=156077&r1=156076&r2=156077&view=diff
==============================================================================
--- llvm/trunk/test/MC/Disassembler/ARM/fp-encoding.txt (original)
+++ llvm/trunk/test/MC/Disassembler/ARM/fp-encoding.txt Thu May  3 11:38:40 2012
@@ -203,6 +203,33 @@
 # CHECK: vstmia  r1, {d2, d3, d4, d5, d6, d7}
 # CHECK: vstmia  r1, {s2, s3, s4, s5, s6, s7}
 
+0x05 0x9a 0xc0 0x0c
+0x0c 0x0b 0xc7 0x0c
+0x06 0x9a 0x93 0x0c
+0x0a 0x5b 0xd2 0x0c
+# CHECK: vstmiaeq r0, {s19, s20, s21, s22, s23}
+# CHECK: vstmiaeq r7, {d16, d17, d18, d19, d20, d21}
+# CHECK: vldmiaeq r3, {s18, s19, s20, s21, s22, s23}
+# CHECK: vldmiaeq r2, {d21, d22, d23, d24, d25}
+
+0x04 0xca 0x6c 0x0d
+0x06 0x1b 0x69 0x0d
+0x03 0xaa 0x75 0x0d
+0x08 0xeb 0x37 0x0d
+# CHECK: vstmdbeq r12!, {s25, s26, s27, s28}
+# CHECK: vstmdbeq r9!, {d17, d18, d19}
+# CHECK: vldmdbeq r5!, {s21, s22, s23}
+# CHECK: vldmdbeq r7!, {d14, d15, d16, d17}
+
+0x04 0x7a 0xa6 0x0c
+0x0c 0xfb 0xa4 0x0c
+0x03 0xaa 0xf8 0x0c
+0x0a 0x3b 0xfb 0x0c
+# CHECK: vstmiaeq r6!, {s14, s15, s16, s17}
+# CHECK: vstmiaeq r4!, {d15, d16, d17, d18, d19, d20}
+# CHECK: vldmiaeq r8!, {s21, s22, s23}
+# CHECK: vldmiaeq r11!, {d19, d20, d21, d22, d23}
+
 0x40 0x0b 0xbd 0xee
 0x60 0x0a 0xbd 0xee
 0x40 0x0b 0xbc 0xee