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PowerPC: Add support for RFC02655 - Saturating Subtract Instruction

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opcodes/
	* ppc-opc.c (XOL): New define.
	(XOL_MASK): Likewise.
	(powerpc_opcodes): Add subfus, subfus., subwus, subwus., subdus, subdus.

gas/
	* testsuite/gas/ppc/rfc02655.s: New test.
	* testsuite/gas/ppc/rfc02655.d: Likewise
	* testsuite/gas/ppc/future-raw.s: Likewise.
	* testsuite/gas/ppc/future-raw.d: Likewise.
	* testsuite/gas/ppc/ppc.exp: Run them.
This commit is contained in:
Peter Bergner
2022-11-08 17:41:52 -06:00
parent a60038c648
commit 51b52f4ade
6 changed files with 61 additions and 0 deletions
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15
gas/testsuite/gas/ppc/future-raw.d Normal file
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@ -0,0 +1,15 @@
#as: -mfuture
#objdump: -dr -Mfuture -Mraw
#name: Future tests - raw disassembly
.*
Disassembly of section \.text:
0+0 <_start>:
.*: (90 58 4c 7d|7d 4c 58 90) subfus r10,0,r12,r11
.*: (91 58 4c 7d|7d 4c 58 91) subfus\. r10,0,r12,r11
.*: (90 ac 96 7e|7e 96 ac 90) subfus r20,1,r22,r21
.*: (91 ac 96 7e|7e 96 ac 91) subfus\. r20,1,r22,r21
#pass

6
gas/testsuite/gas/ppc/future-raw.s Normal file
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@ -0,0 +1,6 @@
.text
_start:
subwus 10,11,12
subwus. 10,11,12
subdus 20,21,22
subdus. 20,21,22

2
gas/testsuite/gas/ppc/ppc.exp
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@ -146,8 +146,10 @@ run_dump_test "scalarquad"
run_dump_test "rop"
run_dump_test "rop-checks"
run_dump_test "rfc02653"
run_dump_test "rfc02655"
run_dump_test "rfc02656"
run_dump_test "rfc02658"
run_dump_test "future-raw"
run_dump_test "dcbt"
run_dump_test "pr27676"

19
gas/testsuite/gas/ppc/rfc02655.d Normal file
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@ -0,0 +1,19 @@
#as: -mfuture
#objdump: -dr -Mfuture
#name: RFC02655 tests
.*
Disassembly of section \.text:
0+0 <_start>:
.*: (90 58 4c 7d|7d 4c 58 90) subwus r10,r11,r12
.*: (90 58 4c 7d|7d 4c 58 90) subwus r10,r11,r12
.*: (91 58 4c 7d|7d 4c 58 91) subwus\. r10,r11,r12
.*: (91 58 4c 7d|7d 4c 58 91) subwus\. r10,r11,r12
.*: (90 ac 96 7e|7e 96 ac 90) subdus r20,r21,r22
.*: (90 ac 96 7e|7e 96 ac 90) subdus r20,r21,r22
.*: (91 ac 96 7e|7e 96 ac 91) subdus\. r20,r21,r22
.*: (91 ac 96 7e|7e 96 ac 91) subdus\. r20,r21,r22
#pass

10
gas/testsuite/gas/ppc/rfc02655.s Normal file
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@ -0,0 +1,10 @@
.text
_start:
subfus 10,0,12,11
subwus 10,11,12
subfus. 10,0,12,11
subwus. 10,11,12
subfus 20,1,22,21
subdus 20,21,22
subfus. 20,1,22,21
subdus. 20,21,22

9
opcodes/ppc-opc.c
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@ -3704,6 +3704,8 @@ const struct powerpc_operand powerpc_operands[] =
#define BO16 PSWM
/* The pst field in a SVRM form instruction. */
#define pst PSWM
/* The L field in a XO form instruction. */
#define XOL PSWM
{ 0x1, 10, 0, 0, 0 },
/* IDX bits for quantization in the pair singles instructions. */
@ -4775,6 +4777,7 @@ const unsigned int num_powerpc_operands = ARRAY_SIZE (powerpc_operands);
| ((((uint64_t)(oe)) & 1) << 10) \
| (((unsigned long)(rc)) & 1))
#define XO_MASK XO (0x3f, 0x1ff, 1, 1)
#define XOL_MASK XO (0x3f, 0x1ff, 0, 1)
/* An XO_MASK with the RB field fixed. */
#define XORB_MASK (XO_MASK | RB_MASK)
@ -7212,6 +7215,12 @@ const struct powerpc_opcode powerpc_opcodes[] = {
{"td", X(31,68), X_MASK, PPC64, 0, {TO, RA, RB}},
{"lwfcmx", APU(31,71,0), APU_MASK, PPC405, 0, {FCRT, RA, RB}},
{"subwus", XO(31,72,0,0), XO_MASK, FUTURE, EXT, {RT, RB, RA}},
{"subwus.", XO(31,72,0,1), XO_MASK, FUTURE, EXT, {RT, RB, RA}},
{"subdus", XO(31,72,1,0), XO_MASK, FUTURE, EXT, {RT, RB, RA}},
{"subdus.", XO(31,72,1,1), XO_MASK, FUTURE, EXT, {RT, RB, RA}},
{"subfus", XO(31,72,0,0), XOL_MASK, FUTURE, 0, {RT, XOL, RA, RB}},
{"subfus.", XO(31,72,0,1), XOL_MASK, FUTURE, 0, {RT, XOL, RA, RB}},
{"mulhd", XO(31,73,0,0), XO_MASK, PPC64, 0, {RT, RA, RB}},
{"mulhd.", XO(31,73,0,1), XO_MASK, PPC64, 0, {RT, RA, RB}},