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MIPS: Fix XPA base and Virtualization ASE instruction handling

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Correct a commit 7d64c587c15f ("Add support for the MIPS eXtended
Physical Address (XPA) ASE.") bug, causing XPA base and Virtualization
ASE instructions to be wrongly always enabled with the selection of the
MIPS32r2 or higher ISA.

For example this source assembles successfully as shown below:

$ cat xpa.s
	mfhc0	$2, $1
$ as -32 -mips32 -o xpa.o xpa.s
xpa.s: Assembler messages:
xpa.s:1: Error: opcode not supported on this processor: mips32 (mips32) `mfhc0 $2,$1'
$ as -32 -mips32r2 -o xpa.o xpa.s
$ objdump -d xpa.o

xpa.o:     file format elf32-tradbigmips

Disassembly of section .text:

00000000 <.text>:
   0:	40420800 	mfhc0	v0,c0_random
	...
$

To address this issue remove the I33 (INSN_ISA32R2) marking from all XPA
instructions in the opcode table.  Additionally, for XPA Virtualization
ASE instructions implement an XPAVZ (ASE_XPA_VIRT) combination ASE flag
and use it in place of IVIRT|XPA (ASE_VIRT|ASE_XPA).

Now the same source is correctly rejected unless the `-mxpa' option is
also used:

$ as -32 -mips32r2 -o xpa.o xpa.s
xpa.s: Assembler messages:
xpa.s:1: Error: opcode not supported on this processor: mips32r2 (mips32r2) `mfhc0 $2,$1'
$ as -32 -mips32r2 -mxpa -o xpa.o xpa.s
$

Add test cases for XPA base and XPA Virtualization ASE instructions.

Parts of this change by Andrew Bennett.

	include/
	* opcode/mips.h (ASE_XPA_VIRT): New macro.

	opcodes/
	* mips-dis.c (mips_calculate_combination_ases): Handle the
	ASE_XPA_VIRT flag.
	(parse_mips_ase_option): New function.
	(parse_mips_dis_option): Factor out ASE option handling to the
	new function.  Call `mips_calculate_combination_ases'.
	* mips-opc.c (XPAVZ): New macro.
	(mips_builtin_opcodes): Correct ISA and ASE flags for "mfhc0",
	"mfhgc0", "mthc0" and "mthgc0".

	gas/
	* config/tc-mips.c (mips_set_ase): Handle the ASE_XPA_VIRT flag.
	* testsuite/gas/mips/xpa.d: Remove `xpa' from `-M' in `objdump'
	flags.  Add `-mvirt' to `as' flags.
	* testsuite/gas/mips/xpa-err.d: New test.
	* testsuite/gas/mips/xpa-virt-err.d: New test.
	* testsuite/gas/mips/xpa-err.l: New stderr output.
	* testsuite/gas/mips/xpa-virt-err.l: New stderr output.
	* testsuite/gas/mips/xpa-err.s: New test source.
	* testsuite/gas/mips/xpa-virt-err.s: New test source.
	* testsuite/gas/mips/mips.exp: Run the new tests.

	binutils/
	* testsuite/binutils-all/mips/mips-xpa-virt-1.d: New test.
	* testsuite/binutils-all/mips/mips-xpa-virt-2.d: New test.
	* testsuite/binutils-all/mips/mips-xpa-virt-3.d: New test.
	* testsuite/binutils-all/mips/mips-xpa-virt-4.d: New test.
	* testsuite/binutils-all/mips/mips-xpa-virt.s: New test source.
	* testsuite/binutils-all/mips/mips.exp: Run the new tests.
This commit is contained in:
Maciej W. Rozycki 2017-06-30 07:21:55 +01:00
parent 8d011e87df
commit 9785fc2a4d
22 changed files with 211 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
binutils/ChangeLog
View File

@ -1,3 +1,12 @@
2017-06-30 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/binutils-all/mips/mips-xpa-virt-1.d: New test.
* testsuite/binutils-all/mips/mips-xpa-virt-2.d: New test.
* testsuite/binutils-all/mips/mips-xpa-virt-3.d: New test.
* testsuite/binutils-all/mips/mips-xpa-virt-4.d: New test.
* testsuite/binutils-all/mips/mips-xpa-virt.s: New test source.
* testsuite/binutils-all/mips/mips.exp: Run the new tests.
2017-06-29 Anton Kolesov <Anton.Kolesov@synopsys.com>
* testsuite/binutils-all/arc/double_store.s: New file.

13
binutils/testsuite/binutils-all/mips/mips-xpa-virt-1.d Normal file
View File

@ -0,0 +1,13 @@
#PROG: objcopy
#objdump: -d --prefix-addresses --show-raw-insn -M cp0-names=mips32
#name: MIPS XPA and Virtualization ASE instruction disassembly 1
#source: mips-xpa-virt.s
.*: +file format .*mips.*
Disassembly of section \.text:
[0-9a-f]+ <[^>]*> 40020800 mfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40420800 cfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620800 0x40620800
[0-9a-f]+ <[^>]*> 40620c00 0x40620c00
\.\.\.

13
binutils/testsuite/binutils-all/mips/mips-xpa-virt-2.d Normal file
View File

@ -0,0 +1,13 @@
#PROG: objcopy
#objdump: -d --prefix-addresses --show-raw-insn -M xpa,cp0-names=mips32
#name: MIPS XPA and Virtualization ASE instruction disassembly 2
#source: mips-xpa-virt.s
.*: +file format .*mips.*
Disassembly of section \.text:
[0-9a-f]+ <[^>]*> 40020800 mfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40420800 mfhc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620800 0x40620800
[0-9a-f]+ <[^>]*> 40620c00 0x40620c00
\.\.\.

13
binutils/testsuite/binutils-all/mips/mips-xpa-virt-3.d Normal file
View File

@ -0,0 +1,13 @@
#PROG: objcopy
#objdump: -d --prefix-addresses --show-raw-insn -M virt,cp0-names=mips32
#name: MIPS XPA and Virtualization ASE instruction disassembly 3
#source: mips-xpa-virt.s
.*: +file format .*mips.*
Disassembly of section \.text:
[0-9a-f]+ <[^>]*> 40020800 mfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40420800 cfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620800 mfgc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620c00 0x40620c00
\.\.\.

13
binutils/testsuite/binutils-all/mips/mips-xpa-virt-4.d Normal file
View File

@ -0,0 +1,13 @@
#PROG: objcopy
#objdump: -d --prefix-addresses --show-raw-insn -M xpa,virt,cp0-names=mips32
#name: MIPS XPA and Virtualization ASE instruction disassembly 4
#source: mips-xpa-virt.s
.*: +file format .*mips.*
Disassembly of section \.text:
[0-9a-f]+ <[^>]*> 40020800 mfc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40420800 mfhc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620800 mfgc0 v0,c0_random
[0-9a-f]+ <[^>]*> 40620c00 mfhgc0 v0,c0_random
\.\.\.

14
binutils/testsuite/binutils-all/mips/mips-xpa-virt.s Normal file
View File

@ -0,0 +1,14 @@
.set mips64r5
.set xpa
.set virt
.text
foo:
mfc0 $2, $1
mfhc0 $2, $1
mfgc0 $2, $1
mfhgc0 $2, $1
# Force some (non-delay-slot) zero bytes, to make 'objdump' print ...
.align 4, 0
.space 16

4
binutils/testsuite/binutils-all/mips/mips.exp
View File

@ -36,6 +36,10 @@ set has_newabi [expr [istarget *-*-irix6*] \
run_dump_test "mips-ase-1"
run_dump_test "mips-ase-2"
run_dump_test "mips-ase-3"
run_dump_test "mips-xpa-virt-1"
run_dump_test "mips-xpa-virt-2"
run_dump_test "mips-xpa-virt-3"
run_dump_test "mips-xpa-virt-4"
run_dump_test "mixed-mips16"
run_dump_test "mixed-micromips"
run_dump_test "mixed-mips16-micromips"

14
gas/ChangeLog
View File

@ -1,3 +1,17 @@
2017-06-30 Maciej W. Rozycki <macro@imgtec.com>
Andrew Bennett <andrew.bennett@imgtec.com>
* config/tc-mips.c (mips_set_ase): Handle the ASE_XPA_VIRT flag.
* testsuite/gas/mips/xpa.d: Remove `xpa' from `-M' in `objdump'
flags. Add `-mvirt' to `as' flags.
* testsuite/gas/mips/xpa-err.d: New test.
* testsuite/gas/mips/xpa-virt-err.d: New test.
* testsuite/gas/mips/xpa-err.l: New stderr output.
* testsuite/gas/mips/xpa-virt-err.l: New stderr output.
* testsuite/gas/mips/xpa-err.s: New test source.
* testsuite/gas/mips/xpa-virt-err.s: New test source.
* testsuite/gas/mips/mips.exp: Run the new tests.
2017-06-29 Maciej W. Rozycki <macro@imgtec.com>
* testsuite/gas/mips/mips16e2@mips16e2-mt-sub.d: Adjust for the

10
gas/config/tc-mips.c
View File

@ -2133,11 +2133,19 @@ mips_set_ase (const struct mips_ase *ase, struct mips_set_options *opts,
/* Clear combination ASE flags, which need to be recalculated based on
updated regular ASE settings. */
opts->ase &= ~ASE_MIPS16E2_MT;
opts->ase &= ~(ASE_MIPS16E2_MT | ASE_XPA_VIRT);
if (enabled_p)
opts->ase |= ase->flags;
/* The Virtualization ASE has eXtended Physical Addressing (XPA)
instructions which are only valid when both ASEs are enabled.
This sets the ASE_XPA_VIRT flag when both ASEs are present. */
if ((opts->ase & (ASE_XPA | ASE_VIRT)) == (ASE_XPA | ASE_VIRT))
{
opts->ase |= ASE_XPA_VIRT;
mask |= ASE_XPA_VIRT;
}
if ((opts->ase & (ASE_MIPS16E2 | ASE_MT)) == (ASE_MIPS16E2 | ASE_MT))
{
opts->ase |= ASE_MIPS16E2_MT;

3
gas/testsuite/gas/mips/mips.exp
View File

@ -1562,6 +1562,9 @@ if { [istarget mips*-*-vxworks*] } {
run_dump_test_arches "msa-branch" [mips_arch_list_matching mips32r2]
run_dump_test_arches "xpa" [mips_arch_list_matching mips32r2 !micromips]
run_dump_test_arches "xpa-err" [mips_arch_list_matching mips32r2 !micromips]
run_dump_test_arches "xpa-virt-err" \
[mips_arch_list_matching mips32r2 !micromips]
run_dump_test_arches "r5" "-32" [mips_arch_list_matching mips32r5 !micromips]
run_dump_test "pcrel-1"

3
gas/testsuite/gas/mips/xpa-err.d Normal file
View File

@ -0,0 +1,3 @@
#name: MIPS XPA instruction errors
#as: -32 -mxpa
#error-output: xpa-err.l

2
gas/testsuite/gas/mips/xpa-err.l Normal file
View File

@ -0,0 +1,2 @@
.*: Assembler messages:
.*:8: Error: opcode not supported on this processor: [^ ]+ \([^)]+\) `mthc0 \$2,\$1'

8
gas/testsuite/gas/mips/xpa-err.s Normal file
View File

@ -0,0 +1,8 @@
# Verify that switching off either `xpa' causes an assembly error
# with an XPA instruction.
.text
foo:
mfhc0 $2, $1
.set noxpa
mthc0 $2, $1

3
gas/testsuite/gas/mips/xpa-virt-err.d Normal file
View File

@ -0,0 +1,3 @@
#name: MIPS XPA Virtualization ASE instruction errors
#as: -32 -mxpa -mvirt
#error-output: xpa-virt-err.l

3
gas/testsuite/gas/mips/xpa-virt-err.l Normal file
View File

@ -0,0 +1,3 @@
.*: Assembler messages:
.*:9: Error: opcode not supported on this processor: [^ ]+ \([^)]+\) `mthgc0 \$2,\$1'
.*:13: Error: opcode not supported on this processor: [^ ]+ \([^)]+\) `mthgc0 \$2,\$1'

15
gas/testsuite/gas/mips/xpa-virt-err.s Normal file
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@ -0,0 +1,15 @@
# Verify that switching off either `xpa' or `virt' causes an assembly
# error with an XPA Virtualization ASE instruction, which requires
# both at a time.
.text
foo:
mfhgc0 $2, $1
.set noxpa
mthgc0 $2, $1
.set xpa
mfhgc0 $2, $1
.set novirt
mthgc0 $2, $1
.set virt
mfhgc0 $2, $1

4
gas/testsuite/gas/mips/xpa.d
View File

@ -1,6 +1,6 @@
#objdump: -dr --prefix-addresses --show-raw-insn -Mxpa,cp0-names=mips32r2
#objdump: -dr --prefix-addresses --show-raw-insn -M cp0-names=mips32r2
#name: XPA instructions
#as: -32 -mxpa
#as: -32 -mxpa -mvirt
.*: +file format .*mips.*

5
include/ChangeLog
View File

@ -1,3 +1,8 @@
2017-06-30 Maciej W. Rozycki <macro@imgtec.com>
Andrew Bennett <andrew.bennett@imgtec.com>
* opcode/mips.h (ASE_XPA_VIRT): New macro.
2017-06-29 Andreas Arnez <arnez@linux.vnet.ibm.com>
* elf/common.h (NT_S390_GS_CB): New macro.

3
include/opcode/mips.h
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@ -1291,6 +1291,9 @@ static const unsigned int mips_isa_table[] = {
#define ASE_MIPS16E2 0x00008000
/* MIPS16e2 MT ASE instructions. */
#define ASE_MIPS16E2_MT 0x00010000
/* The Virtualization ASE has eXtended Physical Addressing (XPA)
instructions which are only valid when both ASEs are enabled. */
#define ASE_XPA_VIRT 0x00020000
/* MIPS ISA defines, use instead of hardcoding ISA level. */

12
opcodes/ChangeLog
View File

@ -1,3 +1,15 @@
2017-06-30 Maciej W. Rozycki <macro@imgtec.com>
Andrew Bennett <andrew.bennett@imgtec.com>
* mips-dis.c (mips_calculate_combination_ases): Handle the
ASE_XPA_VIRT flag.
(parse_mips_ase_option): New function.
(parse_mips_dis_option): Factor out ASE option handling to the
new function. Call `mips_calculate_combination_ases'.
* mips-opc.c (XPAVZ): New macro.
(mips_builtin_opcodes): Correct ISA and ASE flags for "mfhc0",
"mfhgc0", "mthc0" and "mthgc0".
2017-06-29 Maciej W. Rozycki <macro@imgtec.com>
* mips-dis.c (mips_calculate_combination_ases): New function.

66
opcodes/mips-dis.c
View File

@ -815,6 +815,8 @@ mips_calculate_combination_ases (unsigned long opcode_ases)
{
unsigned long combination_ases = 0;
if ((opcode_ases & (ASE_XPA | ASE_VIRT)) == (ASE_XPA | ASE_VIRT))
combination_ases |= ASE_XPA_VIRT;
if ((opcode_ases & (ASE_MIPS16E2 | ASE_MT)) == (ASE_MIPS16E2 | ASE_MT))
combination_ases |= ASE_MIPS16E2_MT;
return combination_ases;
@ -892,6 +894,43 @@ set_default_mips_dis_options (struct disassemble_info *info)
mips_ase |= mips_calculate_combination_ases (mips_ase);
}
/* Parse an ASE disassembler option and set the corresponding global
ASE flag(s). Return TRUE if successful, FALSE otherwise. */
static bfd_boolean
parse_mips_ase_option (const char *option)
{
if (CONST_STRNEQ (option, "msa"))
{
mips_ase |= ASE_MSA;
if ((mips_isa & INSN_ISA_MASK) == ISA_MIPS64R2
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R3
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R5
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R6)
mips_ase |= ASE_MSA64;
return TRUE;
}
if (CONST_STRNEQ (option, "virt"))
{
mips_ase |= ASE_VIRT;
if (mips_isa & ISA_MIPS64R2
|| mips_isa & ISA_MIPS64R3
|| mips_isa & ISA_MIPS64R5
|| mips_isa & ISA_MIPS64R6)
mips_ase |= ASE_VIRT64;
return TRUE;
}
if (CONST_STRNEQ (option, "xpa"))
{
mips_ase |= ASE_XPA;
return TRUE;
}
return FALSE;
}
static void
parse_mips_dis_option (const char *option, unsigned int len)
{
@ -907,35 +946,12 @@ parse_mips_dis_option (const char *option, unsigned int len)
return;
}
if (CONST_STRNEQ (option, "msa"))
if (parse_mips_ase_option (option))
{
mips_ase |= ASE_MSA;
if ((mips_isa & INSN_ISA_MASK) == ISA_MIPS64R2
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R3
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R5
|| (mips_isa & INSN_ISA_MASK) == ISA_MIPS64R6)
mips_ase |= ASE_MSA64;
mips_ase |= mips_calculate_combination_ases (mips_ase);
return;
}
if (CONST_STRNEQ (option, "virt"))
{
mips_ase |= ASE_VIRT;
if (mips_isa & ISA_MIPS64R2
|| mips_isa & ISA_MIPS64R3
|| mips_isa & ISA_MIPS64R5
|| mips_isa & ISA_MIPS64R6)
mips_ase |= ASE_VIRT64;
return;
}
if (CONST_STRNEQ (option, "xpa"))
{
mips_ase |= ASE_XPA;
return;
}
/* Look for the = that delimits the end of the option name. */
for (i = 0; i < len; i++)
if (option[i] == '=')

17
opcodes/mips-opc.c
View File

@ -402,6 +402,7 @@ decode_mips_operand (const char *p)
/* eXtended Physical Address (XPA) support. */
#define XPA ASE_XPA
#define XPAVZ ASE_XPA_VIRT
/* The order of overloaded instructions matters. Label arguments and
register arguments look the same. Instructions that can have either
@ -1390,10 +1391,10 @@ const struct mips_opcode mips_builtin_opcodes[] =
{"mfc0", "t,G,H", 0x40000000, 0xffe007f8, WR_1|RD_C0|LC, 0, I32, 0, 0 },
{"mfgc0", "t,G", 0x40600000, 0xffe007ff, WR_1|RD_C0|LC, 0, 0, IVIRT, 0 },
{"mfgc0", "t,G,H", 0x40600000, 0xffe007f8, WR_1|RD_C0|LC, 0, 0, IVIRT, 0 },
{"mfhc0", "t,G", 0x40400000, 0xffe007ff, WR_1|RD_C0|LC, 0, I33, XPA, 0 },
{"mfhc0", "t,G,H", 0x40400000, 0xffe007f8, WR_1|RD_C0|LC, 0, I33, XPA, 0 },
{"mfhgc0", "t,G", 0x40600400, 0xffe007ff, WR_1|RD_C0|LC, 0, I33, IVIRT|XPA, 0 },
{"mfhgc0", "t,G,H", 0x40600400, 0xffe007f8, WR_1|RD_C0|LC, 0, I33, IVIRT|XPA, 0 },
{"mfhc0", "t,G", 0x40400000, 0xffe007ff, WR_1|RD_C0|LC, 0, 0, XPA, 0 },
{"mfhc0", "t,G,H", 0x40400000, 0xffe007f8, WR_1|RD_C0|LC, 0, 0, XPA, 0 },
{"mfhgc0", "t,G", 0x40600400, 0xffe007ff, WR_1|RD_C0|LC, 0, 0, XPAVZ, 0 },
{"mfhgc0", "t,G,H", 0x40600400, 0xffe007f8, WR_1|RD_C0|LC, 0, 0, XPAVZ, 0 },
{"mfc1", "t,S", 0x44000000, 0xffe007ff, WR_1|RD_2|LC|FP_S, 0, I1, 0, 0 },
{"mfc1", "t,G", 0x44000000, 0xffe007ff, WR_1|RD_2|LC|FP_S, 0, I1, 0, 0 },
{"mfhc1", "t,S", 0x44600000, 0xffe007ff, WR_1|RD_2|LC|FP_D, 0, I33, 0, 0 },
@ -1488,10 +1489,10 @@ const struct mips_opcode mips_builtin_opcodes[] =
{"mtc0", "t,G,H", 0x40800000, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, I32, 0, 0 },
{"mtgc0", "t,G", 0x40600200, 0xffe007ff, RD_1|WR_C0|WR_CC|CM, 0, 0, IVIRT, 0 },
{"mtgc0", "t,G,H", 0x40600200, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, 0, IVIRT, 0 },
{"mthc0", "t,G", 0x40c00000, 0xffe007ff, RD_1|WR_C0|WR_CC|CM, 0, I33, XPA, 0 },
{"mthc0", "t,G,H", 0x40c00000, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, I33, XPA, 0 },
{"mthgc0", "t,G", 0x40600600, 0xffe007ff, RD_1|WR_C0|WR_CC|CM, 0, I33, IVIRT|XPA, 0 },
{"mthgc0", "t,G,H", 0x40600600, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, I33, IVIRT|XPA, 0 },
{"mthc0", "t,G", 0x40c00000, 0xffe007ff, RD_1|WR_C0|WR_CC|CM, 0, 0, XPA, 0 },
{"mthc0", "t,G,H", 0x40c00000, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, 0, XPA, 0 },
{"mthgc0", "t,G", 0x40600600, 0xffe007ff, RD_1|WR_C0|WR_CC|CM, 0, 0, XPAVZ, 0 },
{"mthgc0", "t,G,H", 0x40600600, 0xffe007f8, RD_1|WR_C0|WR_CC|CM, 0, 0, XPAVZ, 0 },
{"mtc1", "t,S", 0x44800000, 0xffe007ff, RD_1|WR_2|CM|FP_S, 0, I1, 0, 0 },
{"mtc1", "t,G", 0x44800000, 0xffe007ff, RD_1|WR_2|CM|FP_S, 0, I1, 0, 0 },
{"mthc1", "t,S", 0x44e00000, 0xffe007ff, RD_1|WR_2|CM|FP_D, 0, I33, 0, 0 },