[binutils, Arm] Add support for shift instructions in MVE
authorSudakshina Das <sudi.das@arm.com>
Tue, 21 May 2019 17:11:08 +0000 (18:11 +0100)
committerSudakshina Das <sudi.das@arm.com>
Tue, 21 May 2019 17:11:08 +0000 (18:11 +0100)
This patch adds the following instructions which are part of
Armv8.1-M MVE:
ASRL (imm)
ASRL (reg)
LSLL (imm)
LSLL (reg)
LSRL
SQRSHRL
SRQSHR
SQSHLL
SQSHL
SRSHRL
SRSHR
UQRSHLL
UQRSHL
UQSHLL
UQSHL
URSHLL
URSHL

*** gas/ChangeLog ***

2019-05-21  Sudakshina Das  <sudi.das@arm.com>

* config/tc-arm.c (operand_parse_code): New entries for
OP_RRnpcsp_I32 (register or integer operands).
(do_mve_scalar_shift): New.
(insns): New instructions for asrl, lsll, lsrl, sqrshrl, sqrshr, sqshl
sqshll, srshr, srshrl, uqrshll, uqrshl, uqshll, uqshl, urshrl and urshr.
* testsuite/gas/arm/mve-shift.d: New.
* testsuite/gas/arm/mve-shift.s: New.
* testsuite/gas/arm/mve-shift-bad.d: New.
* testsuite/gas/arm/mve-shift-bad.s: New.
* testsuite/gas/arm/mve-shift-bad.l: New.

*** opcodes/ChangeLog ***

2019-05-21  Sudakshina Das  <sudi.das@arm.com>

* arm-dis.c (emun mve_instructions): Updated for new instructions.
(mve_opcodes): New instructions for asrl, lsll, lsrl, sqrshrl,
sqrshr, sqshl, sqshll, srshr, srshrl, uqrshll, uqrshl, uqshll,
uqshl, urshrl and urshr.
(is_mve_okay_in_it): Add new instructions to TRUE list.
(is_mve_unpredictable): Add cases for UNPRED_R13 and UNPRED_R15.
(print_insn_mve): Updated to accept new %j,
%<bitfield>m and %<bitfield>n patterns.

gas/ChangeLog
gas/config/tc-arm.c
gas/testsuite/gas/arm/mve-shift-bad.d [new file with mode: 0644]
gas/testsuite/gas/arm/mve-shift-bad.l [new file with mode: 0644]
gas/testsuite/gas/arm/mve-shift-bad.s [new file with mode: 0644]
gas/testsuite/gas/arm/mve-shift.d [new file with mode: 0644]
gas/testsuite/gas/arm/mve-shift.s [new file with mode: 0644]
opcodes/ChangeLog
opcodes/arm-dis.c

index f25c2dc..34fee55 100644 (file)
@@ -1,3 +1,16 @@
+2019-05-21  Sudakshina Das  <sudi.das@arm.com>
+
+       * config/tc-arm.c (operand_parse_code): New entries for
+       OP_RRnpcsp_I32 (register or integer operands).
+       (do_mve_scalar_shift): New.
+       (insns): New instructions for asrl, lsll, lsrl, sqrshrl, sqrshr, sqshl
+       sqshll, srshr, srshrl, uqrshll, uqrshl, uqshll, uqshl, urshrl and urshr.
+       * testsuite/gas/arm/mve-shift.d: New.
+       * testsuite/gas/arm/mve-shift.s: New.
+       * testsuite/gas/arm/mve-shift-bad.d: New.
+       * testsuite/gas/arm/mve-shift-bad.s: New.
+       * testsuite/gas/arm/mve-shift-bad.l: New.
+
 2019-05-21  Faraz Shahbazker  <fshahbazker@wavecomp.com>
 
        * testsuite/gas/mips/r6-branch-constraints.s: Rename to ...
index 136df33..8826119 100644 (file)
@@ -7559,6 +7559,9 @@ parse_operands (char *str, const unsigned int *pattern, bfd_boolean thumb)
        case OP_RRnpc_I0: po_reg_or_goto (REG_TYPE_RN, I0);   break;
        I0:               po_imm_or_fail (0, 0, FALSE);       break;
 
+       case OP_RRnpcsp_I32: po_reg_or_goto (REG_TYPE_RN, I32); break;
+       I32:                 po_imm_or_fail (1, 32, FALSE);     break;
+
        case OP_RF_IF:    po_reg_or_goto (REG_TYPE_FN, IF);   break;
        IF:
          if (!is_immediate_prefix (*str))
@@ -7818,6 +7821,7 @@ parse_operands (char *str, const unsigned int *pattern, bfd_boolean thumb)
 
        case OP_oRRnpcsp:
        case OP_RRnpcsp:
+       case OP_RRnpcsp_I32:
          if (inst.operands[i].isreg)
            {
              if (inst.operands[i].reg == REG_PC)
@@ -14123,6 +14127,37 @@ v8_1_loop_reloc (int is_le)
     }
 }
 
+/* For shifts in MVE.  */
+static void
+do_mve_scalar_shift (void)
+{
+  if (!inst.operands[2].present)
+    {
+      inst.operands[2] = inst.operands[1];
+      inst.operands[1].reg = 0xf;
+    }
+
+  inst.instruction |= inst.operands[0].reg << 16;
+  inst.instruction |= inst.operands[1].reg << 8;
+
+  if (inst.operands[2].isreg)
+    {
+      /* Assuming Rm is already checked not to be 11x1.  */
+      constraint (inst.operands[2].reg == inst.operands[0].reg, BAD_OVERLAP);
+      constraint (inst.operands[2].reg == inst.operands[1].reg, BAD_OVERLAP);
+      inst.instruction |= inst.operands[2].reg << 12;
+    }
+  else
+    {
+      /* Assuming imm is already checked as [1,32].  */
+      unsigned int value = inst.operands[2].imm;
+      inst.instruction |= (value & 0x1c) << 10;
+      inst.instruction |= (value & 0x03) << 6;
+      /* Change last 4 bits from 0xd to 0xf.  */
+      inst.instruction |= 0x2;
+    }
+}
+
 /* MVE instruction encoder helpers.  */
 #define M_MNEM_vabav   0xee800f01
 #define M_MNEM_vmladav   0xeef00e00
@@ -25137,6 +25172,21 @@ static const struct asm_opcode insns[] =
 
 #undef  THUMB_VARIANT
 #define THUMB_VARIANT & mve_ext
+ ToC("lsll",   ea50010d, 3, (RRe, RRo, RRnpcsp_I32), mve_scalar_shift),
+ ToC("lsrl",   ea50011f, 3, (RRe, RRo, I32),         mve_scalar_shift),
+ ToC("asrl",   ea50012d, 3, (RRe, RRo, RRnpcsp_I32), mve_scalar_shift),
+ ToC("uqrshll",        ea51010d, 3, (RRe, RRo, RRnpcsp),     mve_scalar_shift),
+ ToC("sqrshrl",        ea51012d, 3, (RRe, RRo, RRnpcsp),     mve_scalar_shift),
+ ToC("uqshll", ea51010f, 3, (RRe, RRo, I32),         mve_scalar_shift),
+ ToC("urshrl", ea51011f, 3, (RRe, RRo, I32),         mve_scalar_shift),
+ ToC("srshrl", ea51012f, 3, (RRe, RRo, I32),         mve_scalar_shift),
+ ToC("sqshll", ea51013f, 3, (RRe, RRo, I32),         mve_scalar_shift),
+ ToC("uqrshl", ea500f0d, 2, (RRnpcsp, RRnpcsp),      mve_scalar_shift),
+ ToC("sqrshr", ea500f2d, 2, (RRnpcsp, RRnpcsp),      mve_scalar_shift),
+ ToC("uqshl",  ea500f0f, 2, (RRnpcsp, I32),          mve_scalar_shift),
+ ToC("urshr",  ea500f1f, 2, (RRnpcsp, I32),          mve_scalar_shift),
+ ToC("srshr",  ea500f2f, 2, (RRnpcsp, I32),          mve_scalar_shift),
+ ToC("sqshl",  ea500f3f, 2, (RRnpcsp, I32),          mve_scalar_shift),
 
  ToC("vpt",    ee410f00, 3, (COND, RMQ, RMQRZ), mve_vpt),
  ToC("vptt",   ee018f00, 3, (COND, RMQ, RMQRZ), mve_vpt),
diff --git a/gas/testsuite/gas/arm/mve-shift-bad.d b/gas/testsuite/gas/arm/mve-shift-bad.d
new file mode 100644 (file)
index 0000000..f3aea25
--- /dev/null
@@ -0,0 +1,4 @@
+#name: Invalid MVE shift instructions
+#source: mve-shift-bad.s
+#as: -march=armv8.1-m.main+mve
+#error_output: mve-shift-bad.l
diff --git a/gas/testsuite/gas/arm/mve-shift-bad.l b/gas/testsuite/gas/arm/mve-shift-bad.l
new file mode 100644 (file)
index 0000000..5e7bfed
--- /dev/null
@@ -0,0 +1,12 @@
+.*: Assembler messages:
+.*: immediate value out of range -- `asrl r2,r3,#0'
+.*: immediate value out of range -- `asrl r2,r3,#33'
+.*: Error: Odd register not allowed here -- `asrl r1,r3,r5'
+.*: Error: Even register not allowed here -- `lsll r2,r4,#5'
+.*: Error: r15 not allowed here -- `lsll r2,r15,r5'
+.*: Warning: instruction is UNPREDICTABLE with SP operand
+.*: Error: registers may not be the same -- `sqrshrl r2,r3,r3'
+.*: Error: registers may not be the same -- `sqrshr r2,r2'
+.*: Error: registers may not be the same -- `uqrshll r2,r3,r2'
+.*: Error: thumb conditional instruction should be in IT block -- `uqshlgt r2,#32'
+.*: Error: constant expression required -- `urshrlle r2,r3,r5'
diff --git a/gas/testsuite/gas/arm/mve-shift-bad.s b/gas/testsuite/gas/arm/mve-shift-bad.s
new file mode 100644 (file)
index 0000000..7b38359
--- /dev/null
@@ -0,0 +1,15 @@
+        .syntax unified
+        .text
+
+foo:
+       asrl    r2, r3, #0
+       asrl    r2, r3, #33
+       asrl    r1, r3, r5
+       lsll    r2, r4, #5
+       lsll    r2, r15, r5
+       lsrl    r2, r13, #5
+       sqrshrl r2, r3, r3
+       sqrshr  r2, r2
+       uqrshll r2, r3, r2
+       uqshlgt         r2, #32
+       urshrlle        r2, r3, r5
diff --git a/gas/testsuite/gas/arm/mve-shift.d b/gas/testsuite/gas/arm/mve-shift.d
new file mode 100644 (file)
index 0000000..be5cd46
--- /dev/null
@@ -0,0 +1,27 @@
+#name: Valid MVE shift instructions
+#source: mve-shift.s
+#as: -march=armv8.1-m.main+mve
+#objdump: -dr --prefix-addresses --show-raw-insn -marmv8.1-m.main
+
+.*: +file format .*arm.*
+
+Disassembly of section .text:
+0[0-9a-f]+ <[^>]+> ea52 136f   asrl    r2, r3, #5
+0[0-9a-f]+ <[^>]+> ea52 532d   asrl    r2, r3, r5
+0[0-9a-f]+ <[^>]+> ea52 134f   lsll    r2, r3, #5
+0[0-9a-f]+ <[^>]+> ea52 530d   lsll    r2, r3, r5
+0[0-9a-f]+ <[^>]+> ea52 135f   lsrl    r2, r3, #5
+0[0-9a-f]+ <[^>]+> ea53 532d   sqrshrl r2, r3, r5
+0[0-9a-f]+ <[^>]+> ea52 5f2d   sqrshr  r2, r5
+0[0-9a-f]+ <[^>]+> ea53 137f   sqshll  r2, r3, #5
+0[0-9a-f]+ <[^>]+> ea52 1f7f   sqshl   r2, #5
+0[0-9a-f]+ <[^>]+> ea53 73ef   srshrl  r2, r3, #31
+0[0-9a-f]+ <[^>]+> ea52 7fef   srshr   r2, #31
+0[0-9a-f]+ <[^>]+> ea53 530d   uqrshll r2, r3, r5
+0[0-9a-f]+ <[^>]+> ea52 5f0d   uqrshl  r2, r5
+0[0-9a-f]+ <[^>]+> ea53 73cf   uqshll  r2, r3, #31
+0[0-9a-f]+ <[^>]+> bfce        itee    gt
+0[0-9a-f]+ <[^>]+> ea52 0f0f   uqshlgt r2, #32
+0[0-9a-f]+ <[^>]+> ea53 031f   urshrlle        r2, r3, #32
+0[0-9a-f]+ <[^>]+> ea52 0f1f   urshrle r2, #32
+#...
diff --git a/gas/testsuite/gas/arm/mve-shift.s b/gas/testsuite/gas/arm/mve-shift.s
new file mode 100644 (file)
index 0000000..267e3fb
--- /dev/null
@@ -0,0 +1,21 @@
+        .syntax unified
+        .text
+foo:
+       asrl    r2, r3, #5
+       asrl    r2, r3, r5
+       lsll    r2, r3, #5
+       lsll    r2, r3, r5
+       lsrl    r2, r3, #5
+       sqrshrl r2, r3, r5
+       sqrshr  r2, r5
+       sqshll  r2, r3, #5
+       sqshl   r2, #5
+       srshrl  r2, r3, #31
+       srshr   r2, #31
+       uqrshll r2, r3, r5
+       uqrshl  r2, r5
+       uqshll  r2, r3, #31
+       itee    gt
+       uqshlgt         r2, #32
+       urshrlle        r2, r3, #32
+       urshrle         r2, #32
index 7f061c2..e6950ac 100644 (file)
@@ -1,3 +1,14 @@
+2019-05-21  Sudakshina Das  <sudi.das@arm.com>
+
+       * arm-dis.c (emun mve_instructions): Updated for new instructions.
+       (mve_opcodes): New instructions for asrl, lsll, lsrl, sqrshrl,
+       sqrshr, sqshl, sqshll, srshr, srshrl, uqrshll, uqrshl, uqshll,
+       uqshl, urshrl and urshr.
+       (is_mve_okay_in_it): Add new instructions to TRUE list.
+       (is_mve_unpredictable): Add cases for UNPRED_R13 and UNPRED_R15.
+       (print_insn_mve): Updated to accept new %j,
+       %<bitfield>m and %<bitfield>n patterns.
+
 2019-05-21  Faraz Shahbazker  <fshahbazker@wavecomp.com>
 
        * mips-opc.c (mips_builtin_opcodes): Change source register
index 096b571..ab99fb7 100644 (file)
@@ -264,6 +264,23 @@ enum mve_instructions
   MVE_VREV16,
   MVE_VREV32,
   MVE_VREV64,
+  MVE_LSLL,
+  MVE_LSLLI,
+  MVE_LSRL,
+  MVE_ASRL,
+  MVE_ASRLI,
+  MVE_SQRSHRL,
+  MVE_SQRSHR,
+  MVE_UQRSHL,
+  MVE_UQRSHLL,
+  MVE_UQSHL,
+  MVE_UQSHLL,
+  MVE_URSHRL,
+  MVE_URSHR,
+  MVE_SRSHRL,
+  MVE_SRSHR,
+  MVE_SQSHLL,
+  MVE_SQSHL,
   MVE_NONE
 };
 
@@ -2026,6 +2043,7 @@ static const struct opcode32 neon_opcodes[] =
    %d                  print addr mode of MVE vldr[bhw] and vstr[bhw]
    %u                  print 'U' (unsigned) or 'S' for various mve instructions
    %i                  print MVE predicate(s) for vpt and vpst
+   %j                  print a 5-bit immediate from hw2[14:12,7:6]
    %m                  print rounding mode for vcvt and vrint
    %n                  print vector comparison code for predicated instruction
    %s                  print size for various vcvt instructions
@@ -2046,6 +2064,8 @@ static const struct opcode32 neon_opcodes[] =
    %<bitfield>F                print as a MVE S register
    %<bitfield>Z                as %<>r but r15 is ZR instead of PC and r13 is
                        UNPREDICTABLE
+
+   %<bitfield>S                as %<>r but r15 or r13 is UNPREDICTABLE
    %<bitfield>s                print size for vector predicate & non VMOV instructions
    %<bitfield>I                print carry flag or not
    %<bitfield>i                print immediate for vstr/vldr reg +/- imm
@@ -3295,6 +3315,91 @@ static const struct mopcode32 mve_opcodes[] =
    0xee011f40, 0xff811f70,
    "vsub%v.i%20-21s\t%13-15,22Q, %17-19,7Q, %0-3r"},
 
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_ASRLI,
+   0xea50012f, 0xfff1813f,
+   "asrl%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_ASRL,
+   0xea50012d, 0xfff101ff,
+   "asrl%c\t%17-19l, %9-11h, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_LSLLI,
+   0xea50010f, 0xfff1813f,
+   "lsll%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_LSLL,
+   0xea50010d, 0xfff101ff,
+   "lsll%c\t%17-19l, %9-11h, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_LSRL,
+   0xea50011f, 0xfff1813f,
+   "lsrl%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SQRSHRL,
+   0xea51012d, 0xfff101ff,
+   "sqrshrl%c\t%17-19l, %9-11h, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SQRSHR,
+   0xea500f2d, 0xfff00fff,
+   "sqrshr%c\t%16-19S, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SQSHLL,
+   0xea51013f, 0xfff1813f,
+   "sqshll%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SQSHL,
+   0xea500f3f, 0xfff08f3f,
+   "sqshl%c\t%16-19S, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SRSHRL,
+   0xea51012f, 0xfff1813f,
+   "srshrl%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_SRSHR,
+   0xea500f2f, 0xfff08f3f,
+   "srshr%c\t%16-19S, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_UQRSHLL,
+   0xea51010d, 0xfff101ff,
+   "uqrshll%c\t%17-19l, %9-11h, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_UQRSHL,
+   0xea500f0d, 0xfff00fff,
+   "uqrshl%c\t%16-19S, %12-15S"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_UQSHLL,
+    0xea51010f, 0xfff1813f,
+   "uqshll%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_UQSHL,
+   0xea500f0f, 0xfff08f3f,
+   "uqshl%c\t%16-19S, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_URSHRL,
+    0xea51011f, 0xfff1813f,
+   "urshrl%c\t%17-19l, %9-11h, %j"},
+
+  {ARM_FEATURE_COPROC (FPU_MVE),
+   MVE_URSHR,
+   0xea500f1f, 0xfff08f3f,
+   "urshr%c\t%16-19S, %j"},
+
   {ARM_FEATURE_CORE_LOW (0),
    MVE_NONE,
    0x00000000, 0x00000000, 0}
@@ -5169,6 +5274,23 @@ is_mve_okay_in_it (enum mve_instructions matched_insn)
     case MVE_VMOV2_VEC_LANE_TO_GP:
     case MVE_VMOV2_GP_TO_VEC_LANE:
     case MVE_VMOV_VEC_LANE_TO_GP:
+    case MVE_LSLL:
+    case MVE_LSLLI:
+    case MVE_LSRL:
+    case MVE_ASRL:
+    case MVE_ASRLI:
+    case MVE_SQRSHRL:
+    case MVE_SQRSHR:
+    case MVE_UQRSHL:
+    case MVE_UQRSHLL:
+    case MVE_UQSHL:
+    case MVE_UQSHLL:
+    case MVE_URSHRL:
+    case MVE_URSHR:
+    case MVE_SRSHRL:
+    case MVE_SRSHR:
+    case MVE_SQSHLL:
+    case MVE_SQSHL:
       return TRUE;
     default:
       return FALSE;
@@ -5515,6 +5637,22 @@ is_mve_encoding_conflict (unsigned long given,
     else
       return FALSE;
 
+    case MVE_ASRLI:
+    case MVE_ASRL:
+    case MVE_LSLLI:
+    case MVE_LSLL:
+    case MVE_LSRL:
+    case MVE_SQRSHRL:
+    case MVE_SQSHLL:
+    case MVE_SRSHRL:
+    case MVE_UQRSHLL:
+    case MVE_UQSHLL:
+    case MVE_URSHRL:
+      if (arm_decode_field (given, 9, 11) == 0x7)
+       return TRUE;
+      else
+       return FALSE;
+
     default:
     case MVE_VADD_FP_T1:
     case MVE_VADD_FP_T2:
@@ -6490,6 +6628,34 @@ is_mve_unpredictable (unsigned long given, enum mve_instructions matched_insn,
          return FALSE;
       }
 
+    case MVE_LSLL:
+    case MVE_LSLLI:
+    case MVE_LSRL:
+    case MVE_ASRL:
+    case MVE_ASRLI:
+    case MVE_UQSHLL:
+    case MVE_UQRSHLL:
+    case MVE_URSHRL:
+    case MVE_SRSHRL:
+    case MVE_SQSHLL:
+    case MVE_SQRSHRL:
+      {
+       unsigned long gpr = arm_decode_field (given, 9, 11);
+       gpr = ((gpr << 1) | 1);
+       if (gpr == 0xd)
+         {
+           *unpredictable_code = UNPRED_R13;
+           return TRUE;
+         }
+       else if (gpr == 0xf)
+         {
+           *unpredictable_code = UNPRED_R15;
+           return TRUE;
+         }
+
+       return FALSE;
+      }
+
     default:
       return FALSE;
     }
@@ -8983,6 +9149,15 @@ print_insn_mve (struct disassemble_info *info, long given)
                      }
                      break;
 
+                   case 'j':
+                     {
+                       unsigned int imm5 = 0;
+                       imm5 |= arm_decode_field (given, 6, 7);
+                       imm5 |= (arm_decode_field (given, 12, 14) << 2);
+                       func (stream, "#%u", (imm5 == 0) ? 32 : imm5);
+                     }
+                     break;
+
                    case 'n':
                      print_vec_condition (info, given, insn->mve_op);
                      break;
@@ -9088,6 +9263,14 @@ print_insn_mve (struct disassemble_info *info, long given)
                            else
                              func (stream, "%s", arm_regnames[value]);
                            break;
+
+                         case 'S':
+                           if (value == 13 || value == 15)
+                             is_unpredictable = TRUE;
+                           else
+                             func (stream, "%s", arm_regnames[value]);
+                           break;
+
                          case 's':
                            print_mve_size (info,
                                            value,