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arm64: Reorder the macro arguments in the copy routines

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The current argument order is obviously buggy (memcpy.S):

	macro strb1 ptr, regB, val
	strb \ptr, [\regB], \val
	endm

However, it cancels out as the calling sites in copy_template.S pass the
address as the regB argument.

Mechanically reorder the arguments to match the instruction mnemonics.
There is no difference in objdump before and after this patch.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20200429183702.28445-1-catalin.marinas@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Catalin Marinas 2020-04-29 19:37:02 +01:00 committed by Will Deacon
parent 76085aff29
commit ada66f1837
4 changed files with 64 additions and 64 deletions
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32
arch/arm64/lib/copy_from_user.S
View File

@ -20,36 +20,36 @@
* x0 - bytes not copied
*/
.macro ldrb1 ptr, regB, val
uao_user_alternative 9998f, ldrb, ldtrb, \ptr, \regB, \val
.macro ldrb1 reg, ptr, val
uao_user_alternative 9998f, ldrb, ldtrb, \reg, \ptr, \val
.endm
.macro strb1 ptr, regB, val
strb \ptr, [\regB], \val
.macro strb1 reg, ptr, val
strb \reg, [\ptr], \val
.endm
.macro ldrh1 ptr, regB, val
uao_user_alternative 9998f, ldrh, ldtrh, \ptr, \regB, \val
.macro ldrh1 reg, ptr, val
uao_user_alternative 9998f, ldrh, ldtrh, \reg, \ptr, \val
.endm
.macro strh1 ptr, regB, val
strh \ptr, [\regB], \val
.macro strh1 reg, ptr, val
strh \reg, [\ptr], \val
.endm
.macro ldr1 ptr, regB, val
uao_user_alternative 9998f, ldr, ldtr, \ptr, \regB, \val
.macro ldr1 reg, ptr, val
uao_user_alternative 9998f, ldr, ldtr, \reg, \ptr, \val
.endm
.macro str1 ptr, regB, val
str \ptr, [\regB], \val
.macro str1 reg, ptr, val
str \reg, [\ptr], \val
.endm
.macro ldp1 ptr, regB, regC, val
uao_ldp 9998f, \ptr, \regB, \regC, \val
.macro ldp1 reg1, reg2, ptr, val
uao_ldp 9998f, \reg1, \reg2, \ptr, \val
.endm
.macro stp1 ptr, regB, regC, val
stp \ptr, \regB, [\regC], \val
.macro stp1 reg1, reg2, ptr, val
stp \reg1, \reg2, [\ptr], \val
.endm
end .req x5

32
arch/arm64/lib/copy_in_user.S
View File

@ -21,36 +21,36 @@
* Returns:
* x0 - bytes not copied
*/
.macro ldrb1 ptr, regB, val
uao_user_alternative 9998f, ldrb, ldtrb, \ptr, \regB, \val
.macro ldrb1 reg, ptr, val
uao_user_alternative 9998f, ldrb, ldtrb, \reg, \ptr, \val
.endm
.macro strb1 ptr, regB, val
uao_user_alternative 9998f, strb, sttrb, \ptr, \regB, \val
.macro strb1 reg, ptr, val
uao_user_alternative 9998f, strb, sttrb, \reg, \ptr, \val
.endm
.macro ldrh1 ptr, regB, val
uao_user_alternative 9998f, ldrh, ldtrh, \ptr, \regB, \val
.macro ldrh1 reg, ptr, val
uao_user_alternative 9998f, ldrh, ldtrh, \reg, \ptr, \val
.endm
.macro strh1 ptr, regB, val
uao_user_alternative 9998f, strh, sttrh, \ptr, \regB, \val
.macro strh1 reg, ptr, val
uao_user_alternative 9998f, strh, sttrh, \reg, \ptr, \val
.endm
.macro ldr1 ptr, regB, val
uao_user_alternative 9998f, ldr, ldtr, \ptr, \regB, \val
.macro ldr1 reg, ptr, val
uao_user_alternative 9998f, ldr, ldtr, \reg, \ptr, \val
.endm
.macro str1 ptr, regB, val
uao_user_alternative 9998f, str, sttr, \ptr, \regB, \val
.macro str1 reg, ptr, val
uao_user_alternative 9998f, str, sttr, \reg, \ptr, \val
.endm
.macro ldp1 ptr, regB, regC, val
uao_ldp 9998f, \ptr, \regB, \regC, \val
.macro ldp1 reg1, reg2, ptr, val
uao_ldp 9998f, \reg1, \reg2, \ptr, \val
.endm
.macro stp1 ptr, regB, regC, val
uao_stp 9998f, \ptr, \regB, \regC, \val
.macro stp1 reg1, reg2, ptr, val
uao_stp 9998f, \reg1, \reg2, \ptr, \val
.endm
end .req x5

32
arch/arm64/lib/copy_to_user.S
View File

@ -19,36 +19,36 @@
* Returns:
* x0 - bytes not copied
*/
.macro ldrb1 ptr, regB, val
ldrb \ptr, [\regB], \val
.macro ldrb1 reg, ptr, val
ldrb \reg, [\ptr], \val
.endm
.macro strb1 ptr, regB, val
uao_user_alternative 9998f, strb, sttrb, \ptr, \regB, \val
.macro strb1 reg, ptr, val
uao_user_alternative 9998f, strb, sttrb, \reg, \ptr, \val
.endm
.macro ldrh1 ptr, regB, val
ldrh \ptr, [\regB], \val
.macro ldrh1 reg, ptr, val
ldrh \reg, [\ptr], \val
.endm
.macro strh1 ptr, regB, val
uao_user_alternative 9998f, strh, sttrh, \ptr, \regB, \val
.macro strh1 reg, ptr, val
uao_user_alternative 9998f, strh, sttrh, \reg, \ptr, \val
.endm
.macro ldr1 ptr, regB, val
ldr \ptr, [\regB], \val
.macro ldr1 reg, ptr, val
ldr \reg, [\ptr], \val
.endm
.macro str1 ptr, regB, val
uao_user_alternative 9998f, str, sttr, \ptr, \regB, \val
.macro str1 reg, ptr, val
uao_user_alternative 9998f, str, sttr, \reg, \ptr, \val
.endm
.macro ldp1 ptr, regB, regC, val
ldp \ptr, \regB, [\regC], \val
.macro ldp1 reg1, reg2, ptr, val
ldp \reg1, \reg2, [\ptr], \val
.endm
.macro stp1 ptr, regB, regC, val
uao_stp 9998f, \ptr, \regB, \regC, \val
.macro stp1 reg1, reg2, ptr, val
uao_stp 9998f, \reg1, \reg2, \ptr, \val
.endm
end .req x5

32
arch/arm64/lib/memcpy.S
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@ -24,36 +24,36 @@
* Returns:
* x0 - dest
*/
.macro ldrb1 ptr, regB, val
ldrb \ptr, [\regB], \val
.macro ldrb1 reg, ptr, val
ldrb \reg, [\ptr], \val
.endm
.macro strb1 ptr, regB, val
strb \ptr, [\regB], \val
.macro strb1 reg, ptr, val
strb \reg, [\ptr], \val
.endm
.macro ldrh1 ptr, regB, val
ldrh \ptr, [\regB], \val
.macro ldrh1 reg, ptr, val
ldrh \reg, [\ptr], \val
.endm
.macro strh1 ptr, regB, val
strh \ptr, [\regB], \val
.macro strh1 reg, ptr, val
strh \reg, [\ptr], \val
.endm
.macro ldr1 ptr, regB, val
ldr \ptr, [\regB], \val
.macro ldr1 reg, ptr, val
ldr \reg, [\ptr], \val
.endm
.macro str1 ptr, regB, val
str \ptr, [\regB], \val
.macro str1 reg, ptr, val
str \reg, [\ptr], \val
.endm
.macro ldp1 ptr, regB, regC, val
ldp \ptr, \regB, [\regC], \val
.macro ldp1 reg1, reg2, ptr, val
ldp \reg1, \reg2, [\ptr], \val
.endm
.macro stp1 ptr, regB, regC, val
stp \ptr, \regB, [\regC], \val
.macro stp1 reg1, reg2, ptr, val
stp \reg1, \reg2, [\ptr], \val
.endm
.weak memcpy