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/linux/arch/riscv/kernel/
H A Dkexec_relocate.S29 mv s5, zero
30 mv s6, zero
33 csrw CSR_SIE, zero
34 csrw CSR_SIP, zero
73 csrw CSR_SATP, zero
107 mv a3, zero
108 mv a4, zero
109 mv a5, zero
110 mv a6, zero
111 mv a7, zero
[all …]
H A Dhead.S131 csrw CSR_IE, zero
132 csrw CSR_IP, zero
192 csrw CSR_SCRATCH, zero
199 csrw CSR_IE, zero
200 csrw CSR_IP, zero
287 REG_S zero, (a3)
402 fmv.s.x f0, zero
403 fmv.s.x f1, zero
404 fmv.s.x f2, zero
405 fmv.s.x f3, zero
[all …]
/linux/arch/loongarch/lib/
H A Dclear_user.S34 1: st.b zero, a0, 0
56 0: st.d zero, a0, 0
60 bstrins.d a0, zero, 2, 0
67 1: st.d zero, a0, 0
68 2: st.d zero, a0, 8
69 3: st.d zero, a0, 16
70 4: st.d zero, a0, 24
71 5: st.d zero, a0, 32
72 6: st.d zero, a0, 40
73 7: st.d zero, a0, 48
[all …]
/linux/arch/powerpc/crypto/
H A Dghashp10-ppc.pl57 my ($zero,$t0,$t1,$t2,$xC2,$H,$Hh,$Hl,$lemask)=map("v$_",(4..12));
85 vxor $zero,$zero,$zero
87 vsldoi $xC2,$xC2,$zero,15 # 0xe1...
88 vsldoi $t1,$zero,$t0,1 # ...1
99 vsldoi $xC2,$zero,$xC2,8 # 0xc2.0
100 vsldoi $Hl,$zero,$H,8 # ... and split
101 vsldoi $Hh,$H,$zero,8
127 vxor $zero,$zero,$zero
129 vsldoi $xC2,$xC2,$zero,15 # 0xe1...
130 vsldoi $t1,$zero,$t0,1 # ...1
[all …]
H A Dghashp8-ppc.pl57 my ($zero,$t0,$t1,$t2,$xC2,$H,$Hh,$Hl,$lemask)=map("v$_",(4..12));
83 vxor $zero,$zero,$zero
85 vsldoi $xC2,$xC2,$zero,15 # 0xe1...
86 vsldoi $t1,$zero,$t0,1 # ...1
97 vsldoi $xC2,$zero,$xC2,8 # 0xc2.0
98 vsldoi $Hl,$zero,$H,8 # ... and split
99 vsldoi $Hh,$H,$zero,8
130 vxor $zero,$zero,$zero
138 vsldoi $t0,$Xm,$zero,8
139 vsldoi $t1,$zero,$Xm,8
[all …]
H A Daesp10-ppc.pl121 my ($zero,$in0,$in1,$key,$rcon,$mask,$tmp)=map("v$_",(0..6));
185 vxor $zero,$zero,$zero
191 ?vperm $outmask,$zero,$outmask,$outperm
202 vsldoi $tmp,$zero,$in0,12 # >>32
211 vsldoi $tmp,$zero,$tmp,12 # >>32
213 vsldoi $tmp,$zero,$tmp,12 # >>32
222 vsldoi $tmp,$zero,$in0,12 # >>32
231 vsldoi $tmp,$zero,$tmp,12 # >>32
233 vsldoi $tmp,$zero,$tmp,12 # >>32
239 vsldoi $tmp,$zero,$in0,12 # >>32
[all …]
/linux/arch/loongarch/mm/
H A Dpage.S16 st.d zero, a0, 0
17 st.d zero, a0, 8
18 st.d zero, a0, 16
19 st.d zero, a0, 24
20 st.d zero, a0, 32
21 st.d zero, a0, 40
22 st.d zero, a0, 48
23 st.d zero, a0, 56
25 st.d zero, a0, -64
26 st.d zero, a0, -56
[all …]
/linux/arch/xtensa/lib/
H A Dstrnlen_user.S74 bnone a9, a5, .Lz0 # if byte 0 is zero
75 bnone a9, a6, .Lz1 # if byte 1 is zero
76 bnone a9, a7, .Lz2 # if byte 2 is zero
77 bnone a9, a8, .Lz3 # if byte 3 is zero
88 bnone a9, a5, .Lz0 # if byte 0 is zero
89 bnone a9, a6, .Lz1 # if byte 1 is zero
102 # the zero byte in order to include the NULL terminator in the count.
104 .Lz3: # byte 3 is zero
105 addi a4, a4, 3 # point to zero byte
106 .Lz0: # byte 0 is zero
[all …]
H A Dstrncpy_user.S55 beqz a4, .Lret # if len is zero
72 beqz a9, .Lret # if byte 0 is zero
75 beqz a4, .Lret # if len is zero
82 beqz a9, .Lret # if byte 0 is zero
85 beqz a4, .Lret # if len is zero
89 beqz a9, .Lret # if byte 0 is zero
113 bnone a9, a5, .Lz0 # if byte 0 is zero
114 bnone a9, a6, .Lz1 # if byte 1 is zero
115 bnone a9, a7, .Lz2 # if byte 2 is zero
117 bnone a9, a8, .Lz3 # if byte 3 is zero
[all …]
/linux/tools/testing/selftests/bpf/progs/
H A Dtest_sockmap_listen.c65 __u32 zero = 0; in prog_stream_verdict() local
69 verdict = bpf_sk_redirect_map(skb, &sock_map, zero, 0); in prog_stream_verdict()
71 verdict = bpf_sk_redirect_hash(skb, &sock_hash, &zero, 0); in prog_stream_verdict()
84 __u32 zero = 0; in prog_skb_verdict() local
88 verdict = bpf_sk_redirect_map(skb, &sock_map, zero, in prog_skb_verdict()
91 verdict = bpf_sk_redirect_hash(skb, &sock_hash, &zero, in prog_skb_verdict()
105 __u32 zero = 0; in prog_msg_verdict() local
109 verdict = bpf_msg_redirect_map(msg, &sock_map, zero, 0); in prog_msg_verdict()
111 verdict = bpf_msg_redirect_hash(msg, &sock_hash, &zero, 0); in prog_msg_verdict()
125 __u32 zero = 0; in prog_reuseport() local
[all …]
H A Dtest_tc_neigh.c89 __u8 zero[ETH_ALEN * 2]; in tc_dst() local
104 __builtin_memset(&zero, 0, sizeof(zero)); in tc_dst()
105 if (bpf_skb_store_bytes(skb, 0, &zero, sizeof(zero), 0) < 0) in tc_dst()
114 __u8 zero[ETH_ALEN * 2]; in tc_src() local
129 __builtin_memset(&zero, 0, sizeof(zero)); in tc_src()
130 if (bpf_skb_store_bytes(skb, 0, &zero, sizeof(zero), 0) < 0) in tc_src()
H A Dtest_sockmap_kern.h112 int len, *f, ret, zero = 0; in bpf_prog2() local
124 f = bpf_map_lookup_elem(&sock_skb_opts, &zero); in bpf_prog2()
236 int *bytes, zero = 0, one = 1, two = 2, three = 3, four = 4, five = 5; in bpf_prog4() local
239 bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero); in bpf_prog4()
242 bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero); in bpf_prog4()
245 start = bpf_map_lookup_elem(&sock_bytes, &zero); in bpf_prog4()
266 int zero = 0, one = 1, two = 2, three = 3, four = 4, five = 5, key = 0; in bpf_prog6() local
271 bytes = bpf_map_lookup_elem(&sock_apply_bytes, &zero); in bpf_prog6()
274 bytes = bpf_map_lookup_elem(&sock_cork_bytes, &zero); in bpf_prog6()
278 start = bpf_map_lookup_elem(&sock_bytes, &zero); in bpf_prog6()
[all …]
/linux/arch/nios2/kernel/
H A Dinsnemu.S115 stw zero, 0(sp) /* Save zero on stack to avoid special case for r0. */
212 bne r7, zero, multiply
262 bne r7, zero, unsigned_division
270 bge r3,zero,dividend_is_nonnegative
271 sub r3, zero, r3 /* -r3 */
273 bge r5, zero, divisor_is_nonnegative
274 sub r5, zero, r5 /* -r5 */
304 cmplt r7, r3, zero /* r7 = MSB of r3 */
325 bne r14, zero, divide_loop
340 bge r17, zero, quotient_is_nonnegative
[all …]
/linux/lib/
H A Dstackinit_kunit.c89 #define ZERO_CLONE_SCALAR(zero) memset(&(zero), 0x00, sizeof(zero)) argument
90 #define ZERO_CLONE_STRING(zero) memset(&(zero), 0x00, sizeof(zero)) argument
95 #define ZERO_CLONE_STRUCT(zero) \ argument
97 memset(&(zero), 0xFF, sizeof(zero)); \
98 zero.one = 0; \
99 zero.two = 0; \
100 zero.three = 0; \
101 zero.four = 0; \
103 #define ZERO_CLONE_UNION(zero) ZERO_CLONE_STRUCT(zero) argument
198 var_type zero INIT_CLONE_ ## which; \
[all …]
H A Dmemcpy_kunit.c60 struct some_bytes zero = { }; in memcpy_test() local
81 check(zero, 0); in memcpy_test()
82 compare("static initializers", dest, zero); in memcpy_test()
89 memcpy(dest.data, zero.data, sizeof(dest.data)); in memcpy_test()
90 compare("complete overwrite", dest, zero); in memcpy_test()
94 memcpy(dest.data + 12, zero.data, 7); in memcpy_test()
101 memcpy(ptr++, zero.data, count++); in memcpy_test()
103 memcpy(ptr++, zero.data, count++); in memcpy_test()
120 struct some_bytes zero = { }; in memmove_test() local
155 check(zero, 0); in memmove_test()
[all …]
/linux/arch/arm/include/asm/
H A Dtlbflush.h318 const int zero = 0; in __local_flush_tlb_all() local
321 tlb_op(TLB_V4_U_FULL | TLB_V6_U_FULL, "c8, c7, 0", zero); in __local_flush_tlb_all()
322 tlb_op(TLB_V4_D_FULL | TLB_V6_D_FULL, "c8, c6, 0", zero); in __local_flush_tlb_all()
323 tlb_op(TLB_V4_I_FULL | TLB_V6_I_FULL, "c8, c5, 0", zero); in __local_flush_tlb_all()
328 const int zero = 0; in local_flush_tlb_all() local
335 tlb_op(TLB_V7_UIS_FULL, "c8, c7, 0", zero); in local_flush_tlb_all()
345 const int zero = 0; in __flush_tlb_all() local
352 tlb_op(TLB_V7_UIS_FULL, "c8, c3, 0", zero); in __flush_tlb_all()
362 const int zero = 0; in __local_flush_tlb_mm() local
368 tlb_op(TLB_V4_U_FULL, "c8, c7, 0", zero); in __local_flush_tlb_mm()
[all …]
/linux/drivers/misc/lkdtm/
H A Drefcount.c108 refcount_t zero = REFCOUNT_INIT(2); in lkdtm_REFCOUNT_DEC_ZERO() local
111 refcount_dec(&zero); in lkdtm_REFCOUNT_DEC_ZERO()
114 refcount_dec(&zero); in lkdtm_REFCOUNT_DEC_ZERO()
116 check_zero(&zero); in lkdtm_REFCOUNT_DEC_ZERO()
223 refcount_t zero = REFCOUNT_INIT(0); in lkdtm_REFCOUNT_INC_ZERO() local
226 if (!refcount_inc_not_zero(&zero)) { in lkdtm_REFCOUNT_INC_ZERO()
228 if (refcount_read(&zero) == 0) in lkdtm_REFCOUNT_INC_ZERO()
237 refcount_inc(&zero); in lkdtm_REFCOUNT_INC_ZERO()
239 check_from_zero(&zero); in lkdtm_REFCOUNT_INC_ZERO()
248 refcount_t zero = REFCOUNT_INIT(0); in lkdtm_REFCOUNT_ADD_ZERO() local
[all …]
/linux/arch/riscv/crypto/
H A Daes-riscv64-zvkned-zvbb-zvkg.S92 vsetivli zero, 4, e32, m1, ta, ma
113 vsetvli zero, t0, e32, m1, ta, ma
119 vsetvli zero, t0, e64, m2, ta, ma
123 vsetvli zero, t1, e32, m2, ta, ma
131 vsetvli zero, LEN32, e32, m4, ta, ma
143 vsetivli zero, 2, e64, m1, ta, ma
145 vsetivli zero, 1, e64, m1, tu, ma
148 vsetvli zero, LEN32, e32, m4, ta, ma
163 vsetivli zero, 4, e32, m1, ta, ma
165 vsetivli zero, 1, e8, m1, tu, ma
[all …]
/linux/drivers/mfd/
H A D88pm860x-i2c.c143 unsigned char zero; in pm860x_page_reg_write() local
147 read_device(i2c, 0xFA, 0, &zero); in pm860x_page_reg_write()
148 read_device(i2c, 0xFB, 0, &zero); in pm860x_page_reg_write()
149 read_device(i2c, 0xFF, 0, &zero); in pm860x_page_reg_write()
151 read_device(i2c, 0xFE, 0, &zero); in pm860x_page_reg_write()
152 read_device(i2c, 0xFC, 0, &zero); in pm860x_page_reg_write()
161 unsigned char zero = 0; in pm860x_page_bulk_read() local
165 read_device(i2c, 0xfa, 0, &zero); in pm860x_page_bulk_read()
166 read_device(i2c, 0xfb, 0, &zero); in pm860x_page_bulk_read()
167 read_device(i2c, 0xff, 0, &zero); in pm860x_page_bulk_read()
[all …]
/linux/arch/alpha/lib/
H A Dstrrchr.S22 zapnot a1, 1, a1 # e0 : zero extend our test character
23 mov zero, t6 # .. e1 : t6 is last match aligned addr
25 mov zero, t8 # .. e1 : t8 is last match byte compare mask
33 cmpbge zero, t0, t1 # .. e1 : bits set iff byte == zero
36 xor t0, a1, t2 # e0 : make bytes == c zero
37 cmpbge zero, t4, t4 # .. e1 : bits set iff byte is garbage
38 cmpbge zero, t2, t3 # e0 : bits set iff byte == c
50 cmpbge zero, t0, t1 # .. e1 : bits set iff byte == zero
51 cmpbge zero, t2, t3 # e0 : bits set iff byte == c
85 mov zero, v0 # e0 :
H A Dstrchr.S22 zapnot a1, 1, a1 # e0 : zero extend the search character
29 cmpbge zero, t0, t2 # .. e1 : bits set iff byte == zero
33 cmpbge zero, t4, t4 # .. e1 : bits set iff byte is garbage
35 xor t0, a1, t1 # .. e1 : make bytes == c zero
36 cmpbge zero, t1, t3 # e0 : bits set iff byte == c
37 or t2, t3, t0 # e1 : bits set iff char match or zero match
45 cmpbge zero, t0, t2 # e0 : bits set iff byte == 0
46 cmpbge zero, t1, t3 # .. e1 : bits set iff byte == c
68 mov zero, v0 # e0 :
H A Dev67-strrchr.S40 mov zero, t6 # E : t6 is last match aligned addr
43 mov zero, t8 # E : t8 is last match byte compare mask
55 cmpbge zero, t0, t1 # E : bits set iff byte == zero
57 xor t0, a1, t2 # E : make bytes == c zero
58 cmpbge zero, t4, t4 # E : bits set iff byte is garbage
60 cmpbge zero, t2, t3 # E : bits set iff byte == c
77 cmpbge zero, t0, t1 # E : bits set iff byte == zero
78 cmpbge zero, t2, t3 # E : bits set iff byte == c
103 subq t5, t2, t5 # E : Normalize leading zero count
/linux/arch/m68k/fpsp040/
H A Ddo_func.S8 | tbldo.sa. Cases of zero, infinity and NaN are handled in
101 | Load a signed zero to fp0 and set inex2/ainex
110 bsr ld_mzero |if neg, load neg zero, return here
113 | Load a signed zero to fp0; do not set inex2/ainex
118 bne ld_mzero |if neg, load neg zero
119 bra ld_pzero |load positive zero
169 fbeq t_dz2 |if = -1, divide by zero exception
183 | Test for 1.0 as an input argument, returning +zero. Also check
256 .long smod_oper | 00,01 norm,zero = nan with operr
259 .long smod_zro | 01,00 zero,norm = +-zero
[all …]
/linux/Documentation/admin-guide/device-mapper/
H A Dzero.rst2 dm-zero
5 Device-Mapper's "zero" target provides a block-device that always returns
6 zero'd data on reads and silently drops writes. This is similar behavior to
7 /dev/zero, but as a block-device instead of a character-device.
9 Dm-zero has no target-specific parameters.
11 One very interesting use of dm-zero is for creating "sparse" devices in
15 device. Reads to previously unwritten areas will return a zero'd buffer. When
20 To create a sparse device, start by creating a dm-zero device that's the
25 echo "0 $TEN_TERABYTES zero" | dmsetup create zero1
27 Then create a snapshot of the zero device, using any available block-device as
/linux/arch/arm/mach-zynq/
H A Dplatsmp.c40 static u8 __iomem *zero; in zynq_cpun_start() local
47 zero = ioremap(0, trampoline_code_size); in zynq_cpun_start()
48 if (!zero) { in zynq_cpun_start()
53 zero = (__force u8 __iomem *)PAGE_OFFSET; in zynq_cpun_start()
62 memcpy_toio(zero, &zynq_secondary_trampoline, in zynq_cpun_start()
64 writel(address, zero + trampoline_size); in zynq_cpun_start()
71 iounmap(zero); in zynq_cpun_start()

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