diff options
Diffstat (limited to 'arch/sh/lib')
| -rw-r--r-- | arch/sh/lib/Makefile | 6 | ||||
| -rw-r--r-- | arch/sh/lib/ashldi3.c | 30 | ||||
| -rw-r--r-- | arch/sh/lib/ashrdi3.c | 32 | ||||
| -rw-r--r-- | arch/sh/lib/checksum.S | 119 | ||||
| -rw-r--r-- | arch/sh/lib/lshrdi3.c | 30 |
5 files changed, 36 insertions, 181 deletions
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile index d0abbe5e38b0..d20a0768b31f 100644 --- a/arch/sh/lib/Makefile +++ b/arch/sh/lib/Makefile @@ -7,9 +7,7 @@ lib-y = delay.o memmove.o memchr.o \ checksum.o strlen.o div64.o div64-generic.o # Extracted from libgcc -obj-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \ - ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \ - udiv_qrnnd.o +obj-y += movmem.o ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o udiv_qrnnd.o udivsi3-y := udivsi3_i4i-Os.o @@ -30,5 +28,3 @@ memset-$(CONFIG_CPU_SH4) := memset-sh4.o lib-$(CONFIG_MMU) += copy_page.o __clear_user.o lib-$(CONFIG_MCOUNT) += mcount.o lib-y += $(memcpy-y) $(memset-y) $(udivsi3-y) - -ccflags-y := -Werror diff --git a/arch/sh/lib/ashldi3.c b/arch/sh/lib/ashldi3.c deleted file mode 100644 index e5afe0935847..000000000000 --- a/arch/sh/lib/ashldi3.c +++ /dev/null @@ -1,30 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/module.h> - -#include "libgcc.h" - -long long __ashldi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - w.s.low = 0; - w.s.high = (unsigned int) uu.s.low << -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.low >> bm; - - w.s.low = (unsigned int) uu.s.low << b; - w.s.high = ((unsigned int) uu.s.high << b) | carries; - } - - return w.ll; -} - -EXPORT_SYMBOL(__ashldi3); diff --git a/arch/sh/lib/ashrdi3.c b/arch/sh/lib/ashrdi3.c deleted file mode 100644 index ae263fbf2538..000000000000 --- a/arch/sh/lib/ashrdi3.c +++ /dev/null @@ -1,32 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/module.h> - -#include "libgcc.h" - -long long __ashrdi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - /* w.s.high = 1..1 or 0..0 */ - w.s.high = - uu.s.high >> 31; - w.s.low = uu.s.high >> -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.high << bm; - - w.s.high = uu.s.high >> b; - w.s.low = ((unsigned int) uu.s.low >> b) | carries; - } - - return w.ll; -} - -EXPORT_SYMBOL(__ashrdi3); diff --git a/arch/sh/lib/checksum.S b/arch/sh/lib/checksum.S index 97b5c2d9fec4..3e07074e0098 100644 --- a/arch/sh/lib/checksum.S +++ b/arch/sh/lib/checksum.S @@ -173,47 +173,27 @@ ENTRY(csum_partial) mov r6, r0 /* -unsigned int csum_partial_copy_generic (const char *src, char *dst, int len, - int sum, int *src_err_ptr, int *dst_err_ptr) +unsigned int csum_partial_copy_generic (const char *src, char *dst, int len) */ /* - * Copy from ds while checksumming, otherwise like csum_partial - * - * The macros SRC and DST specify the type of access for the instruction. - * thus we can call a custom exception handler for all access types. - * - * FIXME: could someone double-check whether I haven't mixed up some SRC and - * DST definitions? It's damn hard to trigger all cases. I hope I got - * them all but there's no guarantee. + * Copy from ds while checksumming, otherwise like csum_partial with initial + * sum being ~0U */ -#define SRC(...) \ +#define EXC(...) \ 9999: __VA_ARGS__ ; \ .section __ex_table, "a"; \ .long 9999b, 6001f ; \ .previous -#define DST(...) \ - 9999: __VA_ARGS__ ; \ - .section __ex_table, "a"; \ - .long 9999b, 6002f ; \ - .previous - ! ! r4: const char *SRC ! r5: char *DST ! r6: int LEN -! r7: int SUM -! -! on stack: -! int *SRC_ERR_PTR -! int *DST_ERR_PTR ! ENTRY(csum_partial_copy_generic) - mov.l r5,@-r15 - mov.l r6,@-r15 - + mov #-1,r7 mov #3,r0 ! Check src and dest are equally aligned mov r4,r1 and r0,r1 @@ -243,11 +223,11 @@ ENTRY(csum_partial_copy_generic) clrt .align 2 5: -SRC( mov.b @r4+,r1 ) -SRC( mov.b @r4+,r0 ) +EXC( mov.b @r4+,r1 ) +EXC( mov.b @r4+,r0 ) extu.b r1,r1 -DST( mov.b r1,@r5 ) -DST( mov.b r0,@(1,r5) ) +EXC( mov.b r1,@r5 ) +EXC( mov.b r0,@(1,r5) ) extu.b r0,r0 add #2,r5 @@ -276,8 +256,8 @@ DST( mov.b r0,@(1,r5) ) ! Handle first two bytes as a special case .align 2 1: -SRC( mov.w @r4+,r0 ) -DST( mov.w r0,@r5 ) +EXC( mov.w @r4+,r0 ) +EXC( mov.w r0,@r5 ) add #2,r5 extu.w r0,r0 addc r0,r7 @@ -292,32 +272,32 @@ DST( mov.w r0,@r5 ) clrt .align 2 1: -SRC( mov.l @r4+,r0 ) -SRC( mov.l @r4+,r1 ) +EXC( mov.l @r4+,r0 ) +EXC( mov.l @r4+,r1 ) addc r0,r7 -DST( mov.l r0,@r5 ) -DST( mov.l r1,@(4,r5) ) +EXC( mov.l r0,@r5 ) +EXC( mov.l r1,@(4,r5) ) addc r1,r7 -SRC( mov.l @r4+,r0 ) -SRC( mov.l @r4+,r1 ) +EXC( mov.l @r4+,r0 ) +EXC( mov.l @r4+,r1 ) addc r0,r7 -DST( mov.l r0,@(8,r5) ) -DST( mov.l r1,@(12,r5) ) +EXC( mov.l r0,@(8,r5) ) +EXC( mov.l r1,@(12,r5) ) addc r1,r7 -SRC( mov.l @r4+,r0 ) -SRC( mov.l @r4+,r1 ) +EXC( mov.l @r4+,r0 ) +EXC( mov.l @r4+,r1 ) addc r0,r7 -DST( mov.l r0,@(16,r5) ) -DST( mov.l r1,@(20,r5) ) +EXC( mov.l r0,@(16,r5) ) +EXC( mov.l r1,@(20,r5) ) addc r1,r7 -SRC( mov.l @r4+,r0 ) -SRC( mov.l @r4+,r1 ) +EXC( mov.l @r4+,r0 ) +EXC( mov.l @r4+,r1 ) addc r0,r7 -DST( mov.l r0,@(24,r5) ) -DST( mov.l r1,@(28,r5) ) +EXC( mov.l r0,@(24,r5) ) +EXC( mov.l r1,@(28,r5) ) addc r1,r7 add #32,r5 movt r0 @@ -335,9 +315,9 @@ DST( mov.l r1,@(28,r5) ) clrt shlr2 r6 3: -SRC( mov.l @r4+,r0 ) +EXC( mov.l @r4+,r0 ) addc r0,r7 -DST( mov.l r0,@r5 ) +EXC( mov.l r0,@r5 ) add #4,r5 movt r0 dt r6 @@ -353,8 +333,8 @@ DST( mov.l r0,@r5 ) mov #2,r1 cmp/hs r1,r6 bf 5f -SRC( mov.w @r4+,r0 ) -DST( mov.w r0,@r5 ) +EXC( mov.w @r4+,r0 ) +EXC( mov.w r0,@r5 ) extu.w r0,r0 add #2,r5 cmp/eq r1,r6 @@ -363,8 +343,8 @@ DST( mov.w r0,@r5 ) shll16 r0 addc r0,r7 5: -SRC( mov.b @r4+,r0 ) -DST( mov.b r0,@r5 ) +EXC( mov.b @r4+,r0 ) +EXC( mov.b r0,@r5 ) extu.b r0,r0 #ifndef __LITTLE_ENDIAN__ shll8 r0 @@ -373,42 +353,13 @@ DST( mov.b r0,@r5 ) mov #0,r0 addc r0,r7 7: -5000: # Exception handler: .section .fixup, "ax" 6001: - mov.l @(8,r15),r0 ! src_err_ptr - mov #-EFAULT,r1 - mov.l r1,@r0 - - ! zero the complete destination - computing the rest - ! is too much work - mov.l @(4,r15),r5 ! dst - mov.l @r15,r6 ! len - mov #0,r7 -1: mov.b r7,@r5 - dt r6 - bf/s 1b - add #1,r5 - mov.l 8000f,r0 - jmp @r0 - nop - .align 2 -8000: .long 5000b - -6002: - mov.l @(12,r15),r0 ! dst_err_ptr - mov #-EFAULT,r1 - mov.l r1,@r0 - mov.l 8001f,r0 - jmp @r0 - nop - .align 2 -8001: .long 5000b - + rts + mov #0,r0 .previous - add #8,r15 rts mov r7,r0 diff --git a/arch/sh/lib/lshrdi3.c b/arch/sh/lib/lshrdi3.c deleted file mode 100644 index 33eaa1edbc3c..000000000000 --- a/arch/sh/lib/lshrdi3.c +++ /dev/null @@ -1,30 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -#include <linux/module.h> - -#include "libgcc.h" - -long long __lshrdi3(long long u, word_type b) -{ - DWunion uu, w; - word_type bm; - - if (b == 0) - return u; - - uu.ll = u; - bm = 32 - b; - - if (bm <= 0) { - w.s.high = 0; - w.s.low = (unsigned int) uu.s.high >> -bm; - } else { - const unsigned int carries = (unsigned int) uu.s.high << bm; - - w.s.high = (unsigned int) uu.s.high >> b; - w.s.low = ((unsigned int) uu.s.low >> b) | carries; - } - - return w.ll; -} - -EXPORT_SYMBOL(__lshrdi3); |