Introduce ldp2/stp2 to load/store without add src/dst. Signed-off-by: Yang Yingliang <yangyingli...@huawei.com> --- arch/arm64/include/asm/asm-uaccess.h | 16 ++++++++++++++++ arch/arm64/lib/copy_from_user.S | 8 ++++++++ arch/arm64/lib/copy_in_user.S | 8 ++++++++ arch/arm64/lib/copy_to_user.S | 8 ++++++++ arch/arm64/lib/memcpy.S | 8 ++++++++ 5 files changed, 48 insertions(+)
diff --git a/arch/arm64/include/asm/asm-uaccess.h b/arch/arm64/include/asm/asm-uaccess.h index ccedf548dac9..129c08621df1 100644 --- a/arch/arm64/include/asm/asm-uaccess.h +++ b/arch/arm64/include/asm/asm-uaccess.h @@ -72,6 +72,14 @@ alternative_else_nop_endif _asm_extable 8889b,\l; .endm + .macro user_ldp2 l, reg1, reg2, addr, post_inc1, post_inc2 +8888: ldtr \reg1, [\addr, \post_inc1]; +8889: ldtr \reg2, [\addr, \post_inc2]; + + _asm_extable 8888b,\l; + _asm_extable 8889b,\l; + .endm + .macro user_stp l, reg1, reg2, addr, post_inc 8888: sttr \reg1, [\addr]; 8889: sttr \reg2, [\addr, #8]; @@ -81,6 +89,14 @@ alternative_else_nop_endif _asm_extable 8889b,\l; .endm + .macro user_stp2 l, reg1, reg2, addr, post_inc1, post_inc2 +8888: sttr \reg1, [\addr, \post_inc1]; +8889: sttr \reg2, [\addr, \post_inc2]; + + _asm_extable 8888b,\l; + _asm_extable 8889b,\l; + .endm + .macro user_ldst l, inst, reg, addr, post_inc 8888: \inst \reg, [\addr]; add \addr, \addr, \post_inc; diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S index 95cd62d67371..37308bcb338e 100644 --- a/arch/arm64/lib/copy_from_user.S +++ b/arch/arm64/lib/copy_from_user.S @@ -48,10 +48,18 @@ user_ldp 9998f, \reg1, \reg2, \ptr, \val .endm + .macro ldp2 reg1, reg2, ptr, val1, val2 + user_ldp2 9998f, \reg1, \reg2, \ptr, \val1, \val2 + .endm + .macro stp1 reg1, reg2, ptr, val stp \reg1, \reg2, [\ptr], \val .endm + .macro stp2 reg1, reg2, ptr, val1, val2 + stp \reg1, \reg2, [\ptr, \val1] + .endm + end .req x5 SYM_FUNC_START(__arch_copy_from_user) add end, x0, x2 diff --git a/arch/arm64/lib/copy_in_user.S b/arch/arm64/lib/copy_in_user.S index 1f61cd0df062..5654f7098102 100644 --- a/arch/arm64/lib/copy_in_user.S +++ b/arch/arm64/lib/copy_in_user.S @@ -49,10 +49,18 @@ user_ldp 9998f, \reg1, \reg2, \ptr, \val .endm + .macro ldp2 reg1, reg2, ptr, val1, val2 + user_ldp2 9998f, \reg1, \reg2, \ptr, \val1, \val2 + .endm + .macro stp1 reg1, reg2, ptr, val user_stp 9998f, \reg1, \reg2, \ptr, \val .endm + .macro stp2 reg1, reg2, ptr, val1, val2 + user_stp2 9998f, \reg1, \reg2, \ptr, \val1, \val2 + .endm + end .req x5 SYM_FUNC_START(__arch_copy_in_user) diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S index 043da90f5dd7..a1f95169ce04 100644 --- a/arch/arm64/lib/copy_to_user.S +++ b/arch/arm64/lib/copy_to_user.S @@ -47,10 +47,18 @@ ldp \reg1, \reg2, [\ptr], \val .endm + .macro ldp2 reg1, reg2, ptr, val1, val2 + ldp \reg1, \reg2, [\ptr, \val1] + .endm + .macro stp1 reg1, reg2, ptr, val user_stp 9998f, \reg1, \reg2, \ptr, \val .endm + .macro stp2 reg1, reg2, ptr, val1, val2 + user_stp2 9998f, \reg1, \reg2, \ptr, \val1, \val2 + .endm + end .req x5 SYM_FUNC_START(__arch_copy_to_user) add end, x0, x2 diff --git a/arch/arm64/lib/memcpy.S b/arch/arm64/lib/memcpy.S index dc8d2a216a6e..9e0bfefd2673 100644 --- a/arch/arm64/lib/memcpy.S +++ b/arch/arm64/lib/memcpy.S @@ -52,10 +52,18 @@ ldp \reg1, \reg2, [\ptr], \val .endm + .macro ldp2 reg1, reg2, ptr, val1, val2 + ldp \reg1, \reg2, [\ptr, \val1] + .endm + .macro stp1 reg1, reg2, ptr, val stp \reg1, \reg2, [\ptr], \val .endm + .macro stp2 reg1, reg2, ptr, val1, val2 + stp \reg1, \reg2, [\ptr, \val1] + .endm + SYM_FUNC_START_ALIAS(__memcpy) SYM_FUNC_START_WEAK_PI(memcpy) #include "copy_template.S" -- 2.25.1