PowerPC Improve support for Gekko & Broadway

This is a relatively straightforward patch to improve support for the
IBM Gekko and IBM Broadway processors.  Broadway is functionally
equivalent to the IBM 750CL, while Gekko's functionality is a subset
of theirs.  The patch simplifies this reality and adds -mgekko and
-mbroadway as aliases for -m750cl.  I didn't feel it was worth wasting
a PPC_OPCODE_* bit to differentiate Gekko.  The patch adds a number of
simplified mnemonics for special purpose register access.  Notably,
Broadway adds 4 additional IBAT and DBAT registers but these are not
assigned sequential SPR numbers.

gas/
	* config/tc-ppc.c (md_show_usage): Add -mgekko and -mbroadway.
	* doc/as.texi (Target PowerPC options): Add -mgekko and -mbroadway.
	* doc/c-ppc.texi (PowerPC-Opts): Likewise.
	* testsuite/gas/ppc/broadway.d,
	* testsuite/gas/ppc/broadway.s: New test for broadway.
	* testsuite/gas/ppc/ppc.exp: Run new test.
include/
	* opcode/ppc.h (PPC_OPCODE_750): Adjust comment.
opcodes/
	* ppc-dis.c (ppc_opts): Add -mgekko and -mbroadway.
	(powerpc_init_dialect): Handle bfd_mach_ppc_750.
	* ppc-opc.c (insert_sprbat, extract_sprbat): New functions to
	support disjointed BAT.
	(powerpc_operands): Allow extra bit in SPRBAT_MASK.  Add SPRGQR.
	(XSPRGQR_MASK, GEKKO, BROADWAY): Define.
	(powerpc_opcodes): Add 750cl extended mnemonics for spr access.

7 files changed, 229 insertions, 7 deletions

diff --git a/gas/ChangeLog b/gas/ChangeLog
index fa8a7c5..582a12d 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,12 @@
+2018-07-26  Alex Chadwick  <Alex.Chadwick@cl.cam.ac.uk>
+
+	* config/tc-ppc.c (md_show_usage): Add -mgekko and -mbroadway.
+	* doc/as.texi (Target PowerPC options): Add -mgekko and -mbroadway.
+	* doc/c-ppc.texi (PowerPC-Opts): Likewise.
+	* testsuite/gas/ppc/broadway.d,
+	* testsuite/gas/ppc/broadway.s: New test for broadway.
+	* testsuite/gas/ppc/ppc.exp: Run new test.
+
 2018-07-26  Alan Modra  <amodra@gmail.com>
 
 	* config/tc-ppc.c (ppc_elf_localentry): Allow .localentry values
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 4388b25..eaa866d 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -1340,7 +1340,8 @@ PowerPC options:\n\
 -m476                   generate code for PowerPC 476\n\
 -m7400, -m7410, -m7450, -m7455\n\
                         generate code for PowerPC 7400/7410/7450/7455\n\
--m750cl                 generate code for PowerPC 750cl\n\
+-m750cl, -mgekko, -mbroadway\n\
+                        generate code for PowerPC 750cl/Gekko/Broadway\n\
 -m821, -m850, -m860     generate code for PowerPC 821/850/860\n"));
   fprintf (stream, _("\
 -mppc64, -m620          generate code for PowerPC 620/625/630\n\
diff --git a/gas/doc/as.texi b/gas/doc/as.texi
index e9b6016..aea5e71 100644
--- a/gas/doc/as.texi
+++ b/gas/doc/as.texi
@@ -476,10 +476,10 @@ gcc(1), ld(1), and the Info entries for @file{binutils} and @file{ld}.
 @emph{Target PowerPC options:}
    [@b{-a32}|@b{-a64}]
    [@b{-mpwrx}|@b{-mpwr2}|@b{-mpwr}|@b{-m601}|@b{-mppc}|@b{-mppc32}|@b{-m603}|@b{-m604}|@b{-m403}|@b{-m405}|
-    @b{-m440}|@b{-m464}|@b{-m476}|@b{-m7400}|@b{-m7410}|@b{-m7450}|@b{-m7455}|@b{-m750cl}|@b{-mppc64}|
-    @b{-m620}|@b{-me500}|@b{-e500x2}|@b{-me500mc}|@b{-me500mc64}|@b{-me5500}|@b{-me6500}|@b{-mppc64bridge}|
-    @b{-mbooke}|@b{-mpower4}|@b{-mpwr4}|@b{-mpower5}|@b{-mpwr5}|@b{-mpwr5x}|@b{-mpower6}|@b{-mpwr6}|
-    @b{-mpower7}|@b{-mpwr7}|@b{-mpower8}|@b{-mpwr8}|@b{-mpower9}|@b{-mpwr9}@b{-ma2}|
+    @b{-m440}|@b{-m464}|@b{-m476}|@b{-m7400}|@b{-m7410}|@b{-m7450}|@b{-m7455}|@b{-m750cl}|@b{-mgekko}|
+    @b{-mbroadway}|@b{-mppc64}|@b{-m620}|@b{-me500}|@b{-e500x2}|@b{-me500mc}|@b{-me500mc64}|@b{-me5500}|
+    @b{-me6500}|@b{-mppc64bridge}|@b{-mbooke}|@b{-mpower4}|@b{-mpwr4}|@b{-mpower5}|@b{-mpwr5}|@b{-mpwr5x}|
+    @b{-mpower6}|@b{-mpwr6}|@b{-mpower7}|@b{-mpwr7}|@b{-mpower8}|@b{-mpwr8}|@b{-mpower9}|@b{-mpwr9}@b{-ma2}|
     @b{-mcell}|@b{-mspe}|@b{-mspe2}|@b{-mtitan}|@b{-me300}|@b{-mcom}]
    [@b{-many}] [@b{-maltivec}|@b{-mvsx}|@b{-mhtm}|@b{-mvle}]
    [@b{-mregnames}|@b{-mno-regnames}]
diff --git a/gas/doc/c-ppc.texi b/gas/doc/c-ppc.texi
index 6f7b0f9..dfab8a6 100644
--- a/gas/doc/c-ppc.texi
+++ b/gas/doc/c-ppc.texi
@@ -72,8 +72,8 @@ Generate code for PowerPC 476.
 @item -m7400, -m7410, -m7450, -m7455
 Generate code for PowerPC 7400/7410/7450/7455.
 
-@item -m750cl
-Generate code for PowerPC 750CL.
+@item -m750cl, -mgekko, -mbroadway
+Generate code for PowerPC 750CL/Gekko/Broadway.
 
 @item -m821, -m850, -m860
 Generate code for PowerPC 821/850/860.
diff --git a/gas/testsuite/gas/ppc/broadway.d b/gas/testsuite/gas/ppc/broadway.d
new file mode 100644
index 0000000..136e2ef
--- /dev/null
+++ b/gas/testsuite/gas/ppc/broadway.d
@@ -0,0 +1,108 @@
+#as: -mbroadway
+#objdump: -dr -Mbroadway
+#name: PPC Broadway instructions
+
+.*
+
+Disassembly of section \.text:
+
+0+0000000 <start>:
+   0:	(7c 12 fa a6|a6 fa 12 7c) 	mfiabr  r0
+   4:	(7c 32 fb a6|a6 fb 32 7c) 	mtiabr  r1
+   8:	(7c 55 fa a6|a6 fa 55 7c) 	mfdabr  r2
+   c:	(7c 75 fb a6|a6 fb 75 7c) 	mtdabr  r3
+  10:	(7c 90 e2 a6|a6 e2 90 7c) 	mfgqr   r4,0
+  14:	(7c b1 e2 a6|a6 e2 b1 7c) 	mfgqr   r5,1
+  18:	(7c d2 e2 a6|a6 e2 d2 7c) 	mfgqr   r6,2
+  1c:	(7c f3 e2 a6|a6 e2 f3 7c) 	mfgqr   r7,3
+  20:	(7d 14 e2 a6|a6 e2 14 7d) 	mfgqr   r8,4
+  24:	(7d 35 e2 a6|a6 e2 35 7d) 	mfgqr   r9,5
+  28:	(7d 56 e2 a6|a6 e2 56 7d) 	mfgqr   r10,6
+  2c:	(7d 77 e2 a6|a6 e2 77 7d) 	mfgqr   r11,7
+  30:	(7c 90 e3 a6|a6 e3 90 7c) 	mtgqr   0,r4
+  34:	(7c b1 e3 a6|a6 e3 b1 7c) 	mtgqr   1,r5
+  38:	(7c d2 e3 a6|a6 e3 d2 7c) 	mtgqr   2,r6
+  3c:	(7c f3 e3 a6|a6 e3 f3 7c) 	mtgqr   3,r7
+  40:	(7d 14 e3 a6|a6 e3 14 7d) 	mtgqr   4,r8
+  44:	(7d 35 e3 a6|a6 e3 35 7d) 	mtgqr   5,r9
+  48:	(7d 56 e3 a6|a6 e3 56 7d) 	mtgqr   6,r10
+  4c:	(7d 77 e3 a6|a6 e3 77 7d) 	mtgqr   7,r11
+  50:	(7d 99 e2 a6|a6 e2 99 7d) 	mfwpar  r12
+  54:	(7d b9 e3 a6|a6 e3 b9 7d) 	mtwpar  r13
+  58:	(7d db e2 a6|a6 e2 db 7d) 	mfdmal  r14
+  5c:	(7d fb e3 a6|a6 e3 fb 7d) 	mtdmal  r15
+  60:	(7e 1a e2 a6|a6 e2 1a 7e) 	mfdmau  r16
+  64:	(7e 3a e3 a6|a6 e3 3a 7e) 	mtdmau  r17
+  68:	(7e 50 fa a6|a6 fa 50 7e) 	mfhid0  r18
+  6c:	(7e 70 fb a6|a6 fb 70 7e) 	mthid0  r19
+  70:	(7e 91 fa a6|a6 fa 91 7e) 	mfhid1  r20
+  74:	(7e b1 fb a6|a6 fb b1 7e) 	mthid1  r21
+  78:	(7e d8 e2 a6|a6 e2 d8 7e) 	mfhid2  r22
+  7c:	(7e f8 e3 a6|a6 e3 f8 7e) 	mthid2  r23
+  80:	(7f 13 fa a6|a6 fa 13 7f) 	mfhid4  r24
+  84:	(7f 33 fb a6|a6 fb 33 7f) 	mthid4  r25
+  88:	(7c 10 82 a6|a6 82 10 7c) 	mfibatu r0,0
+  8c:	(7c 30 83 a6|a6 83 30 7c) 	mtibatu 0,r1
+  90:	(7c 52 82 a6|a6 82 52 7c) 	mfibatu r2,1
+  94:	(7c 72 83 a6|a6 83 72 7c) 	mtibatu 1,r3
+  98:	(7c 94 82 a6|a6 82 94 7c) 	mfibatu r4,2
+  9c:	(7c b4 83 a6|a6 83 b4 7c) 	mtibatu 2,r5
+  a0:	(7c d6 82 a6|a6 82 d6 7c) 	mfibatu r6,3
+  a4:	(7c f6 83 a6|a6 83 f6 7c) 	mtibatu 3,r7
+  a8:	(7d 10 8a a6|a6 8a 10 7d) 	mfibatu r8,4
+  ac:	(7d 30 8b a6|a6 8b 30 7d) 	mtibatu 4,r9
+  b0:	(7d 52 8a a6|a6 8a 52 7d) 	mfibatu r10,5
+  b4:	(7d 72 8b a6|a6 8b 72 7d) 	mtibatu 5,r11
+  b8:	(7d 94 8a a6|a6 8a 94 7d) 	mfibatu r12,6
+  bc:	(7d b4 8b a6|a6 8b b4 7d) 	mtibatu 6,r13
+  c0:	(7d d6 8a a6|a6 8a d6 7d) 	mfibatu r14,7
+  c4:	(7d f6 8b a6|a6 8b f6 7d) 	mtibatu 7,r15
+  c8:	(7e 11 82 a6|a6 82 11 7e) 	mfibatl r16,0
+  cc:	(7e 31 83 a6|a6 83 31 7e) 	mtibatl 0,r17
+  d0:	(7e 53 82 a6|a6 82 53 7e) 	mfibatl r18,1
+  d4:	(7e 73 83 a6|a6 83 73 7e) 	mtibatl 1,r19
+  d8:	(7e 95 82 a6|a6 82 95 7e) 	mfibatl r20,2
+  dc:	(7e b5 83 a6|a6 83 b5 7e) 	mtibatl 2,r21
+  e0:	(7e d7 82 a6|a6 82 d7 7e) 	mfibatl r22,3
+  e4:	(7e f7 83 a6|a6 83 f7 7e) 	mtibatl 3,r23
+  e8:	(7f 11 8a a6|a6 8a 11 7f) 	mfibatl r24,4
+  ec:	(7f 31 8b a6|a6 8b 31 7f) 	mtibatl 4,r25
+  f0:	(7f 53 8a a6|a6 8a 53 7f) 	mfibatl r26,5
+  f4:	(7f 73 8b a6|a6 8b 73 7f) 	mtibatl 5,r27
+  f8:	(7f 95 8a a6|a6 8a 95 7f) 	mfibatl r28,6
+  fc:	(7f b5 8b a6|a6 8b b5 7f) 	mtibatl 6,r29
+ 100:	(7f d7 8a a6|a6 8a d7 7f) 	mfibatl r30,7
+ 104:	(7f f7 8b a6|a6 8b f7 7f) 	mtibatl 7,r31
+ 108:	(7c 18 82 a6|a6 82 18 7c) 	mfdbatu r0,0
+ 10c:	(7c 38 83 a6|a6 83 38 7c) 	mtdbatu 0,r1
+ 110:	(7c 5a 82 a6|a6 82 5a 7c) 	mfdbatu r2,1
+ 114:	(7c 7a 83 a6|a6 83 7a 7c) 	mtdbatu 1,r3
+ 118:	(7c 9c 82 a6|a6 82 9c 7c) 	mfdbatu r4,2
+ 11c:	(7c bc 83 a6|a6 83 bc 7c) 	mtdbatu 2,r5
+ 120:	(7c de 82 a6|a6 82 de 7c) 	mfdbatu r6,3
+ 124:	(7c fe 83 a6|a6 83 fe 7c) 	mtdbatu 3,r7
+ 128:	(7d 18 8a a6|a6 8a 18 7d) 	mfdbatu r8,4
+ 12c:	(7d 38 8b a6|a6 8b 38 7d) 	mtdbatu 4,r9
+ 130:	(7d 5a 8a a6|a6 8a 5a 7d) 	mfdbatu r10,5
+ 134:	(7d 7a 8b a6|a6 8b 7a 7d) 	mtdbatu 5,r11
+ 138:	(7d 9c 8a a6|a6 8a 9c 7d) 	mfdbatu r12,6
+ 13c:	(7d bc 8b a6|a6 8b bc 7d) 	mtdbatu 6,r13
+ 140:	(7d de 8a a6|a6 8a de 7d) 	mfdbatu r14,7
+ 144:	(7d fe 8b a6|a6 8b fe 7d) 	mtdbatu 7,r15
+ 148:	(7e 19 82 a6|a6 82 19 7e) 	mfdbatl r16,0
+ 14c:	(7e 39 83 a6|a6 83 39 7e) 	mtdbatl 0,r17
+ 150:	(7e 5b 82 a6|a6 82 5b 7e) 	mfdbatl r18,1
+ 154:	(7e 7b 83 a6|a6 83 7b 7e) 	mtdbatl 1,r19
+ 158:	(7e 9d 82 a6|a6 82 9d 7e) 	mfdbatl r20,2
+ 15c:	(7e bd 83 a6|a6 83 bd 7e) 	mtdbatl 2,r21
+ 160:	(7e df 82 a6|a6 82 df 7e) 	mfdbatl r22,3
+ 164:	(7e ff 83 a6|a6 83 ff 7e) 	mtdbatl 3,r23
+ 168:	(7f 19 8a a6|a6 8a 19 7f) 	mfdbatl r24,4
+ 16c:	(7f 39 8b a6|a6 8b 39 7f) 	mtdbatl 4,r25
+ 170:	(7f 5b 8a a6|a6 8a 5b 7f) 	mfdbatl r26,5
+ 174:	(7f 7b 8b a6|a6 8b 7b 7f) 	mtdbatl 5,r27
+ 178:	(7f 9d 8a a6|a6 8a 9d 7f) 	mfdbatl r28,6
+ 17c:	(7f bd 8b a6|a6 8b bd 7f) 	mtdbatl 6,r29
+ 180:	(7f df 8a a6|a6 8a df 7f) 	mfdbatl r30,7
+ 184:	(7f ff 8b a6|a6 8b ff 7f) 	mtdbatl 7,r31
+#pass
diff --git a/gas/testsuite/gas/ppc/broadway.s b/gas/testsuite/gas/ppc/broadway.s
new file mode 100644
index 0000000..b8c4b7b
--- /dev/null
+++ b/gas/testsuite/gas/ppc/broadway.s
@@ -0,0 +1,103 @@
+# PowerPC Broadway instruction tests
+	.text
+start:
+	mfiabr 0
+	mtiabr 1
+	mfdabr 2
+	mtdabr 3
+	mfgqr 4, 0
+	mfgqr 5, 1
+	mfgqr 6, 2
+	mfgqr 7, 3
+	mfgqr 8, 4
+	mfgqr 9, 5
+	mfgqr 10, 6
+	mfgqr 11, 7
+	mtgqr 0, 4
+	mtgqr 1, 5
+	mtgqr 2, 6
+	mtgqr 3, 7
+	mtgqr 4, 8
+	mtgqr 5, 9
+	mtgqr 6, 10
+	mtgqr 7, 11
+	mfwpar 12
+	mtwpar 13
+	mfdmal 14
+	mtdmal 15
+	mfdmau 16
+	mtdmau 17
+	mfhid0 18
+	mthid0 19
+	mfhid1 20
+	mthid1 21
+	mfhid2 22
+	mthid2 23
+	mfhid4 24
+	mthid4 25
+
+	mfibatu 0, 0
+	mtibatu 0, 1
+	mfibatu 2, 1
+	mtibatu 1, 3
+	mfibatu 4, 2
+	mtibatu 2, 5
+	mfibatu 6, 3
+	mtibatu 3, 7
+	mfibatu 8, 4
+	mtibatu 4, 9
+	mfibatu 10, 5
+	mtibatu 5, 11
+	mfibatu 12, 6
+	mtibatu 6, 13
+	mfibatu 14, 7
+	mtibatu 7, 15
+	mfibatl 16, 0
+	mtibatl 0, 17
+	mfibatl 18, 1
+	mtibatl 1, 19
+	mfibatl 20, 2
+	mtibatl 2, 21
+	mfibatl 22, 3
+	mtibatl 3, 23
+	mfibatl 24, 4
+	mtibatl 4, 25
+	mfibatl 26, 5
+	mtibatl 5, 27
+	mfibatl 28, 6
+	mtibatl 6, 29
+	mfibatl 30, 7
+	mtibatl 7, 31
+
+	mfdbatu 0, 0
+	mtdbatu 0, 1
+	mfdbatu 2, 1
+	mtdbatu 1, 3
+	mfdbatu 4, 2
+	mtdbatu 2, 5
+	mfdbatu 6, 3
+	mtdbatu 3, 7
+	mfdbatu 8, 4
+	mtdbatu 4, 9
+	mfdbatu 10, 5
+	mtdbatu 5, 11
+	mfdbatu 12, 6
+	mtdbatu 6, 13
+	mfdbatu 14, 7
+	mtdbatu 7, 15
+	mfdbatl 16, 0
+	mtdbatl 0, 17
+	mfdbatl 18, 1
+	mtdbatl 1, 19
+	mfdbatl 20, 2
+	mtdbatl 2, 21
+	mfdbatl 22, 3
+	mtdbatl 3, 23
+	mfdbatl 24, 4
+	mtdbatl 4, 25
+	mfdbatl 26, 5
+	mtdbatl 5, 27
+	mfdbatl 28, 6
+	mtdbatl 6, 29
+	mfdbatl 30, 7
+	mtdbatl 7, 31
diff --git a/gas/testsuite/gas/ppc/ppc.exp b/gas/testsuite/gas/ppc/ppc.exp
index f3b37de..f36d015 100644
--- a/gas/testsuite/gas/ppc/ppc.exp
+++ b/gas/testsuite/gas/ppc/ppc.exp
@@ -90,6 +90,7 @@ run_dump_test "spe_ambiguous"
 run_dump_test "altivec"
 run_dump_test "altivec2"
 run_dump_test "altivec3"
+run_dump_test "broadway"
 run_dump_test "booke"
 run_dump_test "e500"
 run_list_test "e500-ill" "-me500"