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linux/arch/powerpc/lib/feature-fixups-test.S

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powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
/*
* Copyright 2008 Michael Ellerman, IBM Corporation.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <asm/feature-fixups.h>
#include <asm/ppc_asm.h>
powerpc: Fixup lwsync at runtime To allow for a single kernel image on e500 v1/v2/mc we need to fixup lwsync at runtime. On e500v1/v2 lwsync causes an illop so we need to patch up the code. We default to 'sync' since that is always safe and if the cpu is capable we will replace 'sync' with 'lwsync'. We introduce CPU_FTR_LWSYNC as a way to determine at runtime if this is needed. This flag could be moved elsewhere since we dont really use it for the normal CPU_FTR purpose. Finally we only store the relative offset in the fixup section to keep it as small as possible rather than using a full fixup_entry. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 19:16:40 +04:00
#include <asm/synch.h>
powerpc: move ASM_CONST and stringify_in_c() into asm-const.h This patch moves ASM_CONST() and stringify_in_c() into dedicated asm-const.h, then cleans all related inclusions. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> [mpe: asm-compat.h should include asm-const.h] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-07-05 19:24:57 +03:00
#include <asm/asm-compat.h>
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
.text
#define globl(x) \
.globl x; \
x:
globl(ftr_fixup_test1)
or 1,1,1
or 2,2,2 /* fixup will nop out this instruction */
or 3,3,3
globl(end_ftr_fixup_test1)
globl(ftr_fixup_test1_orig)
or 1,1,1
or 2,2,2
or 3,3,3
globl(ftr_fixup_test1_expected)
or 1,1,1
nop
or 3,3,3
globl(ftr_fixup_test2)
or 1,1,1
or 2,2,2 /* fixup will replace this with ftr_fixup_test2_alt */
or 3,3,3
globl(end_ftr_fixup_test2)
globl(ftr_fixup_test2_orig)
or 1,1,1
or 2,2,2
or 3,3,3
globl(ftr_fixup_test2_alt)
or 31,31,31
globl(ftr_fixup_test2_expected)
or 1,1,1
or 31,31,31
or 3,3,3
globl(ftr_fixup_test3)
or 1,1,1
or 2,2,2 /* fixup will fail to replace this */
or 3,3,3
globl(end_ftr_fixup_test3)
globl(ftr_fixup_test3_orig)
or 1,1,1
or 2,2,2
or 3,3,3
globl(ftr_fixup_test3_alt)
or 31,31,31
or 31,31,31
globl(ftr_fixup_test4)
or 1,1,1
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 3,3,3
globl(end_ftr_fixup_test4)
globl(ftr_fixup_test4_expected)
or 1,1,1
or 31,31,31
or 31,31,31
nop
nop
or 3,3,3
globl(ftr_fixup_test4_orig)
or 1,1,1
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 3,3,3
globl(ftr_fixup_test4_alt)
or 31,31,31
or 31,31,31
globl(ftr_fixup_test5)
or 1,1,1
BEGIN_FTR_SECTION
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
FTR_SECTION_ELSE
2: b 3f
3: or 5,5,5
beq 3b
b 1f
or 6,6,6
b 2b
1: bdnz 3b
ALT_FTR_SECTION_END(0, 1)
or 1,1,1
globl(end_ftr_fixup_test5)
globl(ftr_fixup_test5_expected)
or 1,1,1
2: b 3f
3: or 5,5,5
beq 3b
b 1f
or 6,6,6
b 2b
1: bdnz 3b
or 1,1,1
globl(ftr_fixup_test6)
1: or 1,1,1
BEGIN_FTR_SECTION
or 5,5,5
powerpc: Fix building of feature-fixup tests on ppc32 We need to use PPC_LCMPI otherwise we get compile errors like: arch/powerpc/lib/feature-fixups-test.S: Assembler messages: arch/powerpc/lib/feature-fixups-test.S:142: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:149: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:164: Error: Unrecognized opcode: `cmpdi' Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 19:16:16 +04:00
2: PPC_LCMPI r3,0
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
beq 4f
blt 2b
b 1b
b 4f
FTR_SECTION_ELSE
2: or 2,2,2
powerpc: Fix building of feature-fixup tests on ppc32 We need to use PPC_LCMPI otherwise we get compile errors like: arch/powerpc/lib/feature-fixups-test.S: Assembler messages: arch/powerpc/lib/feature-fixups-test.S:142: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:149: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:164: Error: Unrecognized opcode: `cmpdi' Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 19:16:16 +04:00
PPC_LCMPI r3,1
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
beq 3f
blt 2b
b 3f
b 1b
ALT_FTR_SECTION_END(0, 1)
3: or 1,1,1
or 2,2,2
4: or 3,3,3
globl(end_ftr_fixup_test6)
globl(ftr_fixup_test6_expected)
1: or 1,1,1
2: or 2,2,2
powerpc: Fix building of feature-fixup tests on ppc32 We need to use PPC_LCMPI otherwise we get compile errors like: arch/powerpc/lib/feature-fixups-test.S: Assembler messages: arch/powerpc/lib/feature-fixups-test.S:142: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:149: Error: Unrecognized opcode: `cmpdi' arch/powerpc/lib/feature-fixups-test.S:164: Error: Unrecognized opcode: `cmpdi' Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 19:16:16 +04:00
PPC_LCMPI r3,1
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
beq 3f
blt 2b
b 3f
b 1b
powerpc/lib: Fix feature fixup test of external branch The expected case for this test was wrong, the source of the alternate code sequence is: FTR_SECTION_ELSE 2: or 2,2,2 PPC_LCMPI r3,1 beq 3f blt 2b b 3f b 1b ALT_FTR_SECTION_END(0, 1) 3: or 1,1,1 or 2,2,2 4: or 3,3,3 So when it's patched the '3' label should still be on the 'or 1,1,1', and the 4 label is irrelevant and can be removed. Fixes: 362e7701fd18 ("powerpc: Add self-tests of the feature fixup code") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-16 17:39:02 +03:00
3: or 1,1,1
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
or 2,2,2
powerpc/lib: Fix feature fixup test of external branch The expected case for this test was wrong, the source of the alternate code sequence is: FTR_SECTION_ELSE 2: or 2,2,2 PPC_LCMPI r3,1 beq 3f blt 2b b 3f b 1b ALT_FTR_SECTION_END(0, 1) 3: or 1,1,1 or 2,2,2 4: or 3,3,3 So when it's patched the '3' label should still be on the 'or 1,1,1', and the 4 label is irrelevant and can be removed. Fixes: 362e7701fd18 ("powerpc: Add self-tests of the feature fixup code") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-16 17:39:02 +03:00
or 3,3,3
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
powerpc/lib: Add alt patching test of branching past the last instruction Add a test of the relative branch patching logic in the alternate section feature fixup code. This tests that if we branch past the last instruction of the alternate section, the branch is not patched. That's because the assembler will have created a branch that already points to the first instruction after the patched section, which is correct and needs no further patching. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-16 17:39:05 +03:00
globl(ftr_fixup_test7)
or 1,1,1
BEGIN_FTR_SECTION
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
or 2,2,2
FTR_SECTION_ELSE
2: b 3f
3: or 5,5,5
beq 3b
b 1f
or 6,6,6
b 2b
bdnz 3b
1:
ALT_FTR_SECTION_END(0, 1)
or 1,1,1
or 1,1,1
globl(end_ftr_fixup_test7)
nop
globl(ftr_fixup_test7_expected)
or 1,1,1
2: b 3f
3: or 5,5,5
beq 3b
b 1f
or 6,6,6
b 2b
bdnz 3b
1: or 1,1,1
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
powerpc: Ensure the else case of feature sections will fit When we create an alternative feature section, the else case must be the same size or smaller than the body. This is because when we patch the else case in we just overwrite the body, so there must be room. Up to now we just did this by inspection, but it's quite easy to enforce it in the assembler, so we should. The only change is to add the ifgt block, but that effects the alignment of the tabs and so the whole macro is modified. Also add a test, but #if 0 it because we don't want to break the build. Anyone who's modifying the feature macros should enable the test. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-07 21:22:29 +03:00
#if 0
/* Test that if we have a larger else case the assembler spots it and
* reports an error. #if 0'ed so as not to break the build normally.
*/
powerpc/lib: Rename ftr_fixup_test7 to ftr_fixup_test_too_big We want this to remain the last test (because it's disabled by default), so give it a non-numbered name so we don't have to renumber it when adding new tests before it. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-16 17:39:04 +03:00
ftr_fixup_test_too_big:
powerpc: Ensure the else case of feature sections will fit When we create an alternative feature section, the else case must be the same size or smaller than the body. This is because when we patch the else case in we just overwrite the body, so there must be room. Up to now we just did this by inspection, but it's quite easy to enforce it in the assembler, so we should. The only change is to add the ifgt block, but that effects the alignment of the tabs and so the whole macro is modified. Also add a test, but #if 0 it because we don't want to break the build. Anyone who's modifying the feature macros should enable the test. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-11-07 21:22:29 +03:00
or 1,1,1
BEGIN_FTR_SECTION
or 2,2,2
or 2,2,2
or 2,2,2
FTR_SECTION_ELSE
or 3,3,3
or 3,3,3
or 3,3,3
or 3,3,3
ALT_FTR_SECTION_END(0, 1)
or 1,1,1
#endif
powerpc: Add self-tests of the feature fixup code This commit adds tests of the feature fixup code, they are run during boot if CONFIG_FTR_FIXUP_SELFTEST=y. Some of the tests manually invoke the patching routines to check their behaviour, and others use the macros and so are patched during the normal patching done during boot. Because we have two sets of macros with different names, we use a macro to generate the test of the macros, very niiiice. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-06-24 05:33:03 +04:00
#define MAKE_MACRO_TEST(TYPE) \
globl(ftr_fixup_test_ ##TYPE##_macros) \
or 1,1,1; \
/* Basic test, this section should all be nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
or 2,2,2; \
END_##TYPE##_SECTION(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Basic test, this section should NOT be nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
or 2,2,2; \
END_##TYPE##_SECTION(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, inner section should be nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(80) \
or 3,3,3; \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 1, 80) \
or 2,2,2; \
or 2,2,2; \
END_##TYPE##_SECTION(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, whole section should be nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(80) \
or 3,3,3; \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 0, 80) \
or 2,2,2; \
or 2,2,2; \
END_##TYPE##_SECTION(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, none should be nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(80) \
or 3,3,3; \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 0, 80) \
or 2,2,2; \
or 2,2,2; \
END_##TYPE##_SECTION(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Basic alt section test, default case should be taken */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 5,5,5; \
or 5,5,5; \
ALT_##TYPE##_SECTION_END(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Basic alt section test, else case should be taken */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
or 31,31,31; \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Alt with smaller else case, should be padded with nops */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in default case */ \
/* Default case should be taken, with nop'ed inner section */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 3,3,3; \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 1, 95) \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 2,2,2; \
or 2,2,2; \
ALT_##TYPE##_SECTION_END(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in else, default taken */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 5,5,5; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 1, 95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in else, else taken & nop */ \
BEGIN_##TYPE##_SECTION \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
##TYPE##_SECTION_ELSE \
or 5,5,5; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 3,3,3; \
END_##TYPE##_SECTION_NESTED(0, 1, 95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, default taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) \
or 2,2,2; \
END_##TYPE##_SECTION(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, else taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) \
or 2,2,2; \
END_##TYPE##_SECTION(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, all nop'ed */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) \
or 2,2,2; \
END_##TYPE##_SECTION(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, default with inner default taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) \
or 2,2,2; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
BEGIN_##TYPE##_SECTION_NESTED(94) \
or 5,5,5; \
##TYPE##_SECTION_ELSE_NESTED(94) \
or 1,1,1; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, default with inner else taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) \
or 2,2,2; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
BEGIN_##TYPE##_SECTION_NESTED(94) \
or 5,5,5; \
##TYPE##_SECTION_ELSE_NESTED(94) \
or 1,1,1; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 0) \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else with inner default taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) \
or 2,2,2; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
BEGIN_##TYPE##_SECTION_NESTED(94) \
or 5,5,5; \
##TYPE##_SECTION_ELSE_NESTED(94) \
or 1,1,1; \
ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else with inner else taken */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
BEGIN_##TYPE##_SECTION_NESTED(95) \
or 1,1,1; \
##TYPE##_SECTION_ELSE_NESTED(95) \
or 5,5,5; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) \
or 2,2,2; \
##TYPE##_SECTION_ELSE \
or 31,31,31; \
BEGIN_##TYPE##_SECTION_NESTED(94) \
or 5,5,5; \
##TYPE##_SECTION_ELSE_NESTED(94) \
or 1,1,1; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 94) \
or 31,31,31; \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else can have large else case */ \
BEGIN_##TYPE##_SECTION \
or 2,2,2; \
or 2,2,2; \
or 2,2,2; \
or 2,2,2; \
##TYPE##_SECTION_ELSE \
BEGIN_##TYPE##_SECTION_NESTED(94) \
or 5,5,5; \
or 5,5,5; \
or 5,5,5; \
or 5,5,5; \
##TYPE##_SECTION_ELSE_NESTED(94) \
or 1,1,1; \
or 1,1,1; \
or 1,1,1; \
or 1,1,1; \
ALT_##TYPE##_SECTION_END_NESTED(0, 1, 94) \
ALT_##TYPE##_SECTION_END(0, 1) \
or 1,1,1; \
or 1,1,1;
#define MAKE_MACRO_TEST_EXPECTED(TYPE) \
globl(ftr_fixup_test_ ##TYPE##_macros_expected) \
or 1,1,1; \
/* Basic test, this section should all be nop'ed */ \
/* BEGIN_##TYPE##_SECTION */ \
nop; \
nop; \
nop; \
/* END_##TYPE##_SECTION(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Basic test, this section should NOT be nop'ed */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
or 2,2,2; \
or 2,2,2; \
/* END_##TYPE##_SECTION(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, inner section should be nop'ed */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(80) */ \
nop; \
nop; \
/* END_##TYPE##_SECTION_NESTED(0, 1, 80) */ \
or 2,2,2; \
or 2,2,2; \
/* END_##TYPE##_SECTION(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, whole section should be nop'ed */ \
/* NB. inner section is not nop'ed, but then entire outer is */ \
/* BEGIN_##TYPE##_SECTION */ \
nop; \
nop; \
/* BEGIN_##TYPE##_SECTION_NESTED(80) */ \
nop; \
nop; \
/* END_##TYPE##_SECTION_NESTED(0, 0, 80) */ \
nop; \
nop; \
/* END_##TYPE##_SECTION(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Nesting test, none should be nop'ed */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(80) */ \
or 3,3,3; \
or 3,3,3; \
/* END_##TYPE##_SECTION_NESTED(0, 0, 80) */ \
or 2,2,2; \
or 2,2,2; \
/* END_##TYPE##_SECTION(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Basic alt section test, default case should be taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
/* ##TYPE##_SECTION_ELSE */ \
/* or 5,5,5; */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Basic alt section test, else case should be taken */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* ##TYPE##_SECTION_ELSE */ \
or 31,31,31; \
or 31,31,31; \
or 31,31,31; \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Alt with smaller else case, should be padded with nops */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* ##TYPE##_SECTION_ELSE */ \
or 31,31,31; \
nop; \
nop; \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in default case */ \
/* Default case should be taken, with nop'ed inner section */ \
/* BEGIN_##TYPE##_SECTION */ \
or 3,3,3; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
nop; \
nop; \
/* END_##TYPE##_SECTION_NESTED(0, 1, 95) */ \
or 3,3,3; \
/* ##TYPE##_SECTION_ELSE */ \
/* or 2,2,2; */ \
/* or 2,2,2; */ \
/* ALT_##TYPE##_SECTION_END(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in else, default taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 3,3,3; \
or 3,3,3; \
or 3,3,3; \
/* ##TYPE##_SECTION_ELSE */ \
/* or 5,5,5; */ \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
/* or 3,3,3; */ \
/* END_##TYPE##_SECTION_NESTED(0, 1, 95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Alt section with nested section in else, else taken & nop */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* or 3,3,3; */ \
/* ##TYPE##_SECTION_ELSE */ \
or 5,5,5; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
nop; \
/* END_##TYPE##_SECTION_NESTED(0, 1, 95) */ \
or 5,5,5; \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, default taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
or 1,1,1; \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) */ \
or 2,2,2; \
/* END_##TYPE##_SECTION(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, else taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
/* or 1,1,1; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
or 5,5,5; \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) */ \
or 2,2,2; \
/* END_##TYPE##_SECTION(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Feature section with nested alt section, all nop'ed */ \
/* BEGIN_##TYPE##_SECTION */ \
nop; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
nop; \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) */ \
nop; \
/* END_##TYPE##_SECTION(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, default with inner default taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
or 1,1,1; \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 95) */ \
or 2,2,2; \
/* ##TYPE##_SECTION_ELSE */ \
/* or 31,31,31; */ \
/* BEGIN_##TYPE##_SECTION_NESTED(94) */ \
/* or 5,5,5; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(94) */ \
/* or 1,1,1; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) */ \
/* or 31,31,31; */ \
/* ALT_##TYPE##_SECTION_END(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, default with inner else taken */ \
/* BEGIN_##TYPE##_SECTION */ \
or 2,2,2; \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
/* or 1,1,1; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
or 5,5,5; \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) */ \
or 2,2,2; \
/* ##TYPE##_SECTION_ELSE */ \
/* or 31,31,31; */ \
/* BEGIN_##TYPE##_SECTION_NESTED(94) */ \
/* or 5,5,5; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(94) */ \
/* or 1,1,1; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) */ \
/* or 31,31,31; */ \
/* ALT_##TYPE##_SECTION_END(0, 0) */ \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else with inner default taken */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 2,2,2; */ \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
/* or 1,1,1; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) */ \
/* or 2,2,2; */ \
/* ##TYPE##_SECTION_ELSE */ \
or 31,31,31; \
/* BEGIN_##TYPE##_SECTION_NESTED(94) */ \
or 5,5,5; \
/* ##TYPE##_SECTION_ELSE_NESTED(94) */ \
/* or 1,1,1; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 0, 94) */ \
or 31,31,31; \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else with inner else taken */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 2,2,2; */ \
/* BEGIN_##TYPE##_SECTION_NESTED(95) */ \
/* or 1,1,1; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(95) */ \
/* or 5,5,5; */ \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 95) */ \
/* or 2,2,2; */ \
/* ##TYPE##_SECTION_ELSE */ \
or 31,31,31; \
/* BEGIN_##TYPE##_SECTION_NESTED(94) */ \
/* or 5,5,5; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(94) */ \
or 1,1,1; \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 94) */ \
or 31,31,31; \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1; \
/* Nested alt sections, else can have large else case */ \
/* BEGIN_##TYPE##_SECTION */ \
/* or 2,2,2; */ \
/* or 2,2,2; */ \
/* or 2,2,2; */ \
/* or 2,2,2; */ \
/* ##TYPE##_SECTION_ELSE */ \
/* BEGIN_##TYPE##_SECTION_NESTED(94) */ \
/* or 5,5,5; */ \
/* or 5,5,5; */ \
/* or 5,5,5; */ \
/* or 5,5,5; */ \
/* ##TYPE##_SECTION_ELSE_NESTED(94) */ \
or 1,1,1; \
or 1,1,1; \
or 1,1,1; \
or 1,1,1; \
/* ALT_##TYPE##_SECTION_END_NESTED(0, 1, 94) */ \
/* ALT_##TYPE##_SECTION_END(0, 1) */ \
or 1,1,1; \
or 1,1,1;
MAKE_MACRO_TEST(FTR);
MAKE_MACRO_TEST_EXPECTED(FTR);
#ifdef CONFIG_PPC64
MAKE_MACRO_TEST(FW_FTR);
MAKE_MACRO_TEST_EXPECTED(FW_FTR);
#endif
powerpc: Fixup lwsync at runtime To allow for a single kernel image on e500 v1/v2/mc we need to fixup lwsync at runtime. On e500v1/v2 lwsync causes an illop so we need to patch up the code. We default to 'sync' since that is always safe and if the cpu is capable we will replace 'sync' with 'lwsync'. We introduce CPU_FTR_LWSYNC as a way to determine at runtime if this is needed. This flag could be moved elsewhere since we dont really use it for the normal CPU_FTR purpose. Finally we only store the relative offset in the fixup section to keep it as small as possible rather than using a full fixup_entry. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-07-01 19:16:40 +04:00
globl(lwsync_fixup_test)
1: or 1,1,1
LWSYNC
globl(end_lwsync_fixup_test)
globl(lwsync_fixup_test_expected_LWSYNC)
1: or 1,1,1
lwsync
globl(lwsync_fixup_test_expected_SYNC)
1: or 1,1,1
sync
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