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-rw-r--r--arch/score/lib/Makefile8
-rw-r--r--arch/score/lib/ashldi3.c46
-rw-r--r--arch/score/lib/ashrdi3.c48
-rw-r--r--arch/score/lib/checksum.S255
-rw-r--r--arch/score/lib/checksum_copy.c52
-rw-r--r--arch/score/lib/cmpdi2.c44
-rw-r--r--arch/score/lib/libgcc.h37
-rw-r--r--arch/score/lib/lshrdi3.c47
-rw-r--r--arch/score/lib/string.S196
-rw-r--r--arch/score/lib/ucmpdi2.c38
10 files changed, 771 insertions, 0 deletions
diff --git a/arch/score/lib/Makefile b/arch/score/lib/Makefile
new file mode 100644
index 000000000000..553e30e81faf
--- /dev/null
+++ b/arch/score/lib/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for SCORE-specific library files..
+#
+
+lib-y += string.o checksum.o checksum_copy.o
+
+# libgcc-style stuff needed in the kernel
+obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
diff --git a/arch/score/lib/ashldi3.c b/arch/score/lib/ashldi3.c
new file mode 100644
index 000000000000..15691a910431
--- /dev/null
+++ b/arch/score/lib/ashldi3.c
@@ -0,0 +1,46 @@
+/*
+ * arch/score/lib/ashldi3.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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/score/lib/ashrdi3.c b/arch/score/lib/ashrdi3.c
new file mode 100644
index 000000000000..d9814a5d8d30
--- /dev/null
+++ b/arch/score/lib/ashrdi3.c
@@ -0,0 +1,48 @@
+/*
+ * arch/score/lib/ashrdi3.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#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/score/lib/checksum.S b/arch/score/lib/checksum.S
new file mode 100644
index 000000000000..706157edc7d5
--- /dev/null
+++ b/arch/score/lib/checksum.S
@@ -0,0 +1,255 @@
+/*
+ * arch/score/lib/csum_partial.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <linux/linkage.h>
+
+#define ADDC(sum,reg) \
+ add sum, sum, reg; \
+ cmp.c reg, sum; \
+ bleu 9f; \
+ addi sum, 0x1; \
+9:
+
+#define CSUM_BIGCHUNK(src, offset, sum) \
+ lw r8, [src, offset + 0x00]; \
+ lw r9, [src, offset + 0x04]; \
+ lw r10, [src, offset + 0x08]; \
+ lw r11, [src, offset + 0x0c]; \
+ ADDC(sum, r8); \
+ ADDC(sum, r9); \
+ ADDC(sum, r10); \
+ ADDC(sum, r11); \
+ lw r8, [src, offset + 0x10]; \
+ lw r9, [src, offset + 0x14]; \
+ lw r10, [src, offset + 0x18]; \
+ lw r11, [src, offset + 0x1c]; \
+ ADDC(sum, r8); \
+ ADDC(sum, r9); \
+ ADDC(sum, r10); \
+ ADDC(sum, r11); \
+
+#define src r4
+#define dest r5
+#define sum r27
+
+ .text
+/* unknown src alignment and < 8 bytes to go */
+small_csumcpy:
+ mv r5, r10
+ ldi r9, 0x0
+ cmpi.c r25, 0x1
+ beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
+ andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
+
+pass_small_set_t7:
+ beq aligned
+ cmpi.c r5, 0x0
+ beq fold
+ lbu r9, [src]
+ slli r9,r9, 0x8 /*Little endian*/
+ ADDC(sum, r9)
+ addi src, 0x1
+ subi.c r5, 0x1
+
+ /*len still a full word */
+aligned:
+ andri.c r8, r5, 0x4 /*Len >= 4?*/
+ beq len_less_4bytes
+
+ /* Still a full word (4byte) to go,and the src is word aligned.*/
+ andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
+ beq four_byte_aligned
+ lhu r9, [src]
+ addi src, 2
+ ADDC(sum, r9)
+ lhu r9, [src]
+ addi src, 2
+ ADDC(sum, r9)
+ b len_less_4bytes
+
+four_byte_aligned: /* Len >=4 and four byte aligned */
+ lw r9, [src]
+ addi src, 4
+ ADDC(sum, r9)
+
+len_less_4bytes: /* 2 byte aligned aligned and length<4B */
+ andri.c r8, r5, 0x2
+ beq len_less_2bytes
+ lhu r9, [src]
+ addi src, 0x2 /* src+=2 */
+ ADDC(sum, r9)
+
+len_less_2bytes: /* len = 1 */
+ andri.c r8, r5, 0x1
+ beq fold /* less than 2 and not equal 1--> len=0 -> fold */
+ lbu r9, [src]
+
+fold_ADDC:
+ ADDC(sum, r9)
+fold:
+ /* fold checksum */
+ slli r26, sum, 16
+ add sum, sum, r26
+ cmp.c r26, sum
+ srli sum, sum, 16
+ bleu 1f /* if r26<=sum */
+ addi sum, 0x1 /* r26>sum */
+1:
+ /* odd buffer alignment? r25 was set in csum_partial */
+ cmpi.c r25, 0x0
+ beq 1f
+ slli r26, sum, 8
+ srli sum, sum, 8
+ or sum, sum, r26
+ andi sum, 0xffff
+1:
+ .set optimize
+ /* Add the passed partial csum. */
+ ADDC(sum, r6)
+ mv r4, sum
+ br r3
+ .set volatile
+
+ .align 5
+ENTRY(csum_partial)
+ ldi sum, 0
+ ldi r25, 0
+ mv r10, r5
+ cmpi.c r5, 0x8
+ blt small_csumcpy /* < 8(singed) bytes to copy */
+ cmpi.c r5, 0x0
+ beq out
+ andri.c r25, src, 0x1 /* odd buffer? */
+
+ beq word_align
+hword_align: /* 1 byte */
+ lbu r8, [src]
+ subi r5, 0x1
+ slli r8, r8, 8
+ ADDC(sum, r8)
+ addi src, 0x1
+
+word_align: /* 2 bytes */
+ andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
+ beq dword_align /* not, maybe dword_align */
+ lhu r8, [src]
+ subi r5, 0x2
+ ADDC(sum, r8)
+ addi src, 0x2
+
+dword_align: /* 4bytes */
+ mv r26, r5 /* maybe useless when len >=56 */
+ ldi r8, 56
+ cmp.c r8, r5
+ bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
+ andri.c r26, src, 0x4
+ beq qword_align
+ lw r8, [src]
+ subi r5, 0x4
+ ADDC(sum, r8)
+ addi src, 0x4
+
+qword_align: /* 8 bytes */
+ andri.c r26, src, 0x8
+ beq oword_align
+ lw r8, [src, 0x0]
+ lw r9, [src, 0x4]
+ subi r5, 0x8 /* len-=0x8 */
+ ADDC(sum, r8)
+ ADDC(sum, r9)
+ addi src, 0x8
+
+oword_align: /* 16bytes */
+ andri.c r26, src, 0x10
+ beq begin_movement
+ lw r10, [src, 0x08]
+ lw r11, [src, 0x0c]
+ lw r8, [src, 0x00]
+ lw r9, [src, 0x04]
+ ADDC(sum, r10)
+ ADDC(sum, r11)
+ ADDC(sum, r8)
+ ADDC(sum, r9)
+ subi r5, 0x10
+ addi src, 0x10
+
+begin_movement:
+ srli.c r26, r5, 0x7 /* len>=128? */
+ beq 1f /* len<128 */
+
+/* r26 is the result that computed in oword_align */
+move_128bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ CSUM_BIGCHUNK(src, 0x20, sum)
+ CSUM_BIGCHUNK(src, 0x40, sum)
+ CSUM_BIGCHUNK(src, 0x60, sum)
+ subi.c r26, 0x01 /* r26 equals len/128 */
+ addi src, 0x80
+ bne move_128bytes
+
+1: /* len<128,we process 64byte here */
+ andri.c r10, r5, 0x40
+ beq 1f
+
+move_64bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ CSUM_BIGCHUNK(src, 0x20, sum)
+ addi src, 0x40
+
+1: /* len<64 */
+ andri r26, r5, 0x1c /* 0x1c=28 */
+ andri.c r10, r5, 0x20
+ beq do_end_words /* decided by andri */
+
+move_32bytes:
+ CSUM_BIGCHUNK(src, 0x00, sum)
+ andri r26, r5, 0x1c
+ addri src, src, 0x20
+
+do_end_words: /* len<32 */
+ /* r26 was set already in dword_align */
+ cmpi.c r26, 0x0
+ beq maybe_end_cruft /* len<28 or len<56 */
+ srli r26, r26, 0x2
+
+end_words:
+ lw r8, [src]
+ subi.c r26, 0x1 /* unit is 4 byte */
+ ADDC(sum, r8)
+ addi src, 0x4
+ cmpi.c r26, 0x0
+ bne end_words /* r26!=0 */
+
+maybe_end_cruft: /* len<4 */
+ andri r10, r5, 0x3
+
+small_memcpy:
+ mv r5, r10
+ j small_csumcpy
+
+out:
+ mv r4, sum
+ br r3
+
+END(csum_partial)
diff --git a/arch/score/lib/checksum_copy.c b/arch/score/lib/checksum_copy.c
new file mode 100644
index 000000000000..04565dd3ded8
--- /dev/null
+++ b/arch/score/lib/checksum_copy.c
@@ -0,0 +1,52 @@
+/*
+ * arch/score/lib/csum_partial_copy.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <net/checksum.h>
+
+#include <asm/uaccess.h>
+
+unsigned int csum_partial_copy(const char *src, char *dst,
+ int len, unsigned int sum)
+{
+ sum = csum_partial(src, len, sum);
+ memcpy(dst, src, len);
+
+ return sum;
+}
+
+unsigned int csum_partial_copy_from_user(const char *src, char *dst,
+ int len, unsigned int sum,
+ int *err_ptr)
+{
+ int missing;
+
+ missing = copy_from_user(dst, src, len);
+ if (missing) {
+ memset(dst + len - missing, 0, missing);
+ *err_ptr = -EFAULT;
+ }
+
+ return csum_partial(dst, len, sum);
+}
diff --git a/arch/score/lib/cmpdi2.c b/arch/score/lib/cmpdi2.c
new file mode 100644
index 000000000000..1ed5290c66ed
--- /dev/null
+++ b/arch/score/lib/cmpdi2.c
@@ -0,0 +1,44 @@
+/*
+ * arch/score/lib/cmpdi2.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __cmpdi2(long long a, long long b)
+{
+ const DWunion au = {
+ .ll = a
+ };
+ const DWunion bu = {
+ .ll = b
+ };
+
+ if (au.s.high < bu.s.high)
+ return 0;
+ else if (au.s.high > bu.s.high)
+ return 2;
+
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+
+ return 1;
+}
+EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/score/lib/libgcc.h b/arch/score/lib/libgcc.h
new file mode 100644
index 000000000000..0f12543d9f31
--- /dev/null
+++ b/arch/score/lib/libgcc.h
@@ -0,0 +1,37 @@
+/*
+ * arch/score/lib/libgcc.h
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef __ASM_LIBGCC_H
+#define __ASM_LIBGCC_H
+
+#include <asm/byteorder.h>
+
+typedef int word_type __attribute__((mode(__word__)));
+
+struct DWstruct {
+ int low, high;
+};
+
+typedef union {
+ struct DWstruct s;
+ long long ll;
+} DWunion;
+
+#endif /* __ASM_LIBGCC_H */
diff --git a/arch/score/lib/lshrdi3.c b/arch/score/lib/lshrdi3.c
new file mode 100644
index 000000000000..ce21175fd791
--- /dev/null
+++ b/arch/score/lib/lshrdi3.c
@@ -0,0 +1,47 @@
+/*
+ * arch/score/lib/lshrdi3.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#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);
diff --git a/arch/score/lib/string.S b/arch/score/lib/string.S
new file mode 100644
index 000000000000..943d0911ea89
--- /dev/null
+++ b/arch/score/lib/string.S
@@ -0,0 +1,196 @@
+/*
+ * arch/score/lib/string.S
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ * Chen Liqin <liqin.chen@sunplusct.com>
+ * Lennox Wu <lennox.wu@sunplusct.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/linkage.h>
+#include <asm-generic/errno.h>
+
+ .text
+ .align 2
+ENTRY(__strncpy_from_user)
+ cmpi.c r6, 0
+ mv r9, r6
+ ble .L2
+0: lbu r7, [r5]
+ ldi r8, 0
+1: sb r7, [r4]
+2: lb r6, [r5]
+ cmp.c r6, r8
+ beq .L2
+
+.L5:
+ addi r8, 1
+ cmp.c r8, r9
+ beq .L7
+3: lbu r6, [r5, 1]+
+4: sb r6, [r4, 1]+
+5: lb r7, [r5]
+ cmpi.c r7, 0
+ bne .L5
+.L7:
+ mv r4, r8
+ br r3
+.L2:
+ ldi r8, 0
+ mv r4, r8
+ br r3
+ .section .fixup, "ax"
+99:
+ ldi r4, -EFAULT
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b ,99b
+ .word 1b ,99b
+ .word 2b ,99b
+ .word 3b ,99b
+ .word 4b ,99b
+ .word 5b ,99b
+ .previous
+
+ .align 2
+ENTRY(__strnlen_user)
+ cmpi.c r5, 0
+ ble .L11
+0: lb r6, [r4]
+ ldi r7, 0
+ cmp.c r6, r7
+ beq .L11
+.L15:
+ addi r7, 1
+ cmp.c r7, r5
+ beq .L23
+1: lb r6, [r4,1]+
+ cmpi.c r6, 0
+ bne .L15
+.L23:
+ addri r4, r7, 1
+ br r3
+
+.L11:
+ ldi r4, 1
+ br r3
+ .section .fixup, "ax"
+99:
+ ldi r4, 0
+ br r3
+
+ .section __ex_table,"a"
+ .align 2
+ .word 0b, 99b
+ .word 1b, 99b
+ .previous
+
+ .align 2
+ENTRY(__strlen_user)
+0: lb r6, [r4]
+ mv r7, r4
+ extsb r6, r6
+ cmpi.c r6, 0
+ mv r4, r6
+ beq .L27
+.L28:
+1: lb r6, [r7, 1]+
+ addi r6, 1
+ cmpi.c r6, 0
+ bne .L28
+.L27:
+ br r3
+ .section .fixup, "ax"
+ ldi r4, 0x0
+ br r3
+99:
+ ldi r4, 0
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b ,99b
+ .word 1b ,99b
+ .previous
+
+ .align 2
+ENTRY(__copy_tofrom_user)
+ cmpi.c r6, 0
+ mv r10,r6
+ beq .L32
+ ldi r9, 0
+.L34:
+ add r6, r5, r9
+0: lbu r8, [r6]
+ add r7, r4, r9
+1: sb r8, [r7]
+ addi r9, 1
+ cmp.c r9, r10
+ bne .L34
+.L32:
+ ldi r4, 0
+ br r3
+ .section .fixup, "ax"
+99:
+ sub r4, r10, r9
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+ .word 0b, 99b
+ .word 1b, 99b
+ .previous
+
+ .align 2
+ENTRY(__clear_user)
+ cmpi.c r5, 0
+ beq .L38
+ ldi r6, 0
+ mv r7, r6
+.L40:
+ addi r6, 1
+0: sb r7, [r4]+, 1
+ cmp.c r6, r5
+ bne .L40
+.L38:
+ ldi r4, 0
+ br r3
+
+ .section .fixup, "ax"
+ br r3
+ .previous
+ .section __ex_table, "a"
+ .align 2
+99:
+ .word 0b, 99b
+ .previous
+
+ .align 2
+ENTRY(__put_user_unknown)
+ .set volatile
+ ldi r4, -EFAULT
+ br r3
+
+ .align 2
+ENTRY(__get_user_unknown)
+ ldi r5, 0
+ ldi r4, -EFAULT
+ br r3
diff --git a/arch/score/lib/ucmpdi2.c b/arch/score/lib/ucmpdi2.c
new file mode 100644
index 000000000000..b15241e0b079
--- /dev/null
+++ b/arch/score/lib/ucmpdi2.c
@@ -0,0 +1,38 @@
+/*
+ * arch/score/lib/ucmpdi2.c
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include "libgcc.h"
+
+word_type __ucmpdi2(unsigned long long a, unsigned long long b)
+{
+ const DWunion au = {.ll = a};
+ const DWunion bu = {.ll = b};
+
+ if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
+ return 0;
+ else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
+ return 2;
+ if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
+ return 0;
+ else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
+ return 2;
+ return 1;
+}
+EXPORT_SYMBOL(__ucmpdi2);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-23 04:32:03 +0000