MIPS/gas: Reject $0 as source register for DAUI instruction

The MIPS64R6 TRM requires that the source register for DAUI
not be r0.

[1] "MIPS Architecture for Programmers Volume II-A: The MIPS64
    Instruction Set Manual", Imagination Technologies Ltd., Document
    Number: MD00087, Revision 6.06, December 15, 2016, Section 3.2
    "Alphabetical List of Instructions", pp. 67-68.

gas/
	* testsuite/gas/mips/r6-branch-constraints.s: Rename to ...
	* testsuite/gas/mips/r6-reg-constraints.s: this and add test
	case for DAUI.
	* testsuite/gas/mips/r6-branch-constraints.l: Rename to ...
	* testsuite/gas/mips/r6-reg-constraints.l: this and add test
	for DAUI.
	* testsuite/gas/mips/mips.exp: Rename test from
	r6-branch-constraints to r6-reg-constraints.

opcodes/
	* mips-opc.c (mips_builtin_opcodes): Change source register
	constraint for DAUI.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index dfd5d6f1b7030634792478aba252326a48c3b5bc..f25c2dc2ba86bfa7a1c5b3d10598486cae6f859e 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,14 @@
+2019-05-21  Faraz Shahbazker  <fshahbazker@wavecomp.com>
+
+       * testsuite/gas/mips/r6-branch-constraints.s: Rename to ...
+       * testsuite/gas/mips/r6-reg-constraints.s: this and add test
+       case for DAUI.
+       * testsuite/gas/mips/r6-branch-constraints.l: Rename to ...
+       * testsuite/gas/mips/r6-reg-constraints.l: this and add test
+       for DAUI.
+       * testsuite/gas/mips/mips.exp: Rename test from
+       r6-branch-constraints to r6-reg-constraints.
+
 2019-05-21  Andre Vieira  <andre.simoesdiasvieira@arm.com>
 
        PR 24559

diff --git a/gas/testsuite/gas/mips/mips.exp b/gas/testsuite/gas/mips/mips.exp
index c8ecd04e9433264c5d8406fdc00010250088f76f..eaeb488f61fb9a41c52ae4097806ab880279a653 100644 (file)
--- a/gas/testsuite/gas/mips/mips.exp
+++ b/gas/testsuite/gas/mips/mips.exp
@@ -2074,7 +2074,7 @@ if { [istarget mips*-*-vxworks*] } {
     run_list_test_arches "r6-removed"  "-32" [mips_arch_list_matching mips32r6]
     run_list_test_arches "r6-64-removed"       [mips_arch_list_matching mips64r6]
 
-    run_list_test_arches "r6-branch-constraints"  "-32" \
+    run_list_test_arches "r6-reg-constraints"  "-32" \
                        [mips_arch_list_matching mips32r6]
 
     run_dump_test_arches "crc"         [mips_arch_list_matching mips32r6]

diff --git a/gas/testsuite/gas/mips/r6-branch-constraints.l b/gas/testsuite/gas/mips/r6-reg-constraints.l
similarity index 95%
rename from gas/testsuite/gas/mips/r6-branch-constraints.l
rename to gas/testsuite/gas/mips/r6-reg-constraints.l
index bdeea9f160c0bcc3cdcdae3022c86adea00791f7..c89807347e4bfc26523998c00e071db4a305727d 100644 (file)
--- a/gas/testsuite/gas/mips/r6-branch-constraints.l
+++ b/gas/testsuite/gas/mips/r6-reg-constraints.l
@@ -23,3 +23,4 @@
 .*:23: Error: the source register must not be \$0 `bnec \$0,\$2,.'
 .*:24: Error: invalid operands `bnec \$2,\$0,.'
 .*:25: Error: invalid operands `bnec \$2,\$2,.'
+.*:26: Error: the source register must not be \$0 `daui \$2,\$0,1'

diff --git a/gas/testsuite/gas/mips/r6-branch-constraints.s b/gas/testsuite/gas/mips/r6-reg-constraints.s
similarity index 96%
rename from gas/testsuite/gas/mips/r6-branch-constraints.s
rename to gas/testsuite/gas/mips/r6-reg-constraints.s
index 62ca893b2c4bcc49b5c06eeb4983bac3e4d84347..b29527c248f34ffd0336b80ac861f6bffefa5590 100644 (file)
--- a/gas/testsuite/gas/mips/r6-branch-constraints.s
+++ b/gas/testsuite/gas/mips/r6-reg-constraints.s
@@ -23,3 +23,4 @@
        bnec        $0,$2,.
        bnec        $2,$0,.
        bnec        $2,$2,.
+       daui        $2,$0,1

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 61adb8e4655de3fdfbf274bc13088c6bc5555f1c..7f061c28d303bacef01d9e84b5b8064e1f5f21fb 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,8 @@
+2019-05-21  Faraz Shahbazker  <fshahbazker@wavecomp.com>
+
+       * mips-opc.c (mips_builtin_opcodes): Change source register
+       constraint for DAUI.
+
 2019-05-20  Nick Clifton  <nickc@redhat.com>
 
        * po/fr.po: Updated French translation.

diff --git a/opcodes/mips-opc.c b/opcodes/mips-opc.c
index 69b16be80f62849d773add28bb95d5981b23ebc2..0483a04edec326db88d59249ced5e95f19b399b5 100644 (file)
--- a/opcodes/mips-opc.c
+++ b/opcodes/mips-opc.c
@@ -3271,7 +3271,7 @@ const struct mips_opcode mips_builtin_opcodes[] =
 /* MIPS r6.  */
 {"aui",                        "t,s,u",        0x3c000000, 0xfc000000, WR_1|RD_2,              0,              I37,            0,      0 },
 {"auipc",              "s,u",          0xec1e0000, 0xfc1f0000, WR_1,                   RD_pc,          I37,            0,      0 },
-{"daui",               "t,s,u",        0x74000000, 0xfc000000, WR_1|RD_2,              0,              I37,            0,      0 },
+{"daui",               "t,-s,u",       0x74000000, 0xfc000000, WR_1|RD_2,              0,              I37,            0,      0 },
 {"dahi",               "s,-d,u",       0x04060000, 0xfc1f0000, MOD_1,                  0,              I69,            0,      0 },
 {"dati",               "s,-d,u",       0x041e0000, 0xfc1f0000, MOD_1,                  0,              I69,            0,      0 },