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-rw-r--r--arch/x86/Kconfig12
-rw-r--r--arch/x86/configs/xen.config1
-rw-r--r--arch/x86/crypto/Kconfig13
-rw-r--r--arch/x86/crypto/Makefile5
-rw-r--r--arch/x86/crypto/curve25519-x86_64.c1726
-rw-r--r--arch/x86/include/asm/bitops.h12
-rw-r--r--arch/x86/include/asm/cfi.h4
-rw-r--r--arch/x86/include/asm/xen/page.h14
-rw-r--r--arch/x86/kernel/Makefile2
-rw-r--r--arch/x86/kernel/alternative.c4
-rw-r--r--arch/x86/kernel/kprobes/core.c2
-rw-r--r--arch/x86/purgatory/Makefile2
-rw-r--r--arch/x86/xen/Kconfig7
-rw-r--r--arch/x86/xen/enlighten_pv.c2
-rw-r--r--arch/x86/xen/mmu.c2
-rw-r--r--arch/x86/xen/p2m.c4
16 files changed, 31 insertions, 1781 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 05880301212e..052a5f811203 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -127,8 +127,8 @@ config X86
select ARCH_SUPPORTS_PAGE_TABLE_CHECK if X86_64
select ARCH_SUPPORTS_NUMA_BALANCING if X86_64
select ARCH_SUPPORTS_KMAP_LOCAL_FORCE_MAP if NR_CPUS <= 4096
- select ARCH_SUPPORTS_CFI_CLANG if X86_64
- select ARCH_USES_CFI_TRAPS if X86_64 && CFI_CLANG
+ select ARCH_SUPPORTS_CFI if X86_64
+ select ARCH_USES_CFI_TRAPS if X86_64 && CFI
select ARCH_SUPPORTS_LTO_CLANG
select ARCH_SUPPORTS_LTO_CLANG_THIN
select ARCH_SUPPORTS_RT
@@ -2396,11 +2396,11 @@ config FUNCTION_PADDING_CFI
default 3 if FUNCTION_ALIGNMENT_8B
default 0
-# Basically: FUNCTION_ALIGNMENT - 5*CFI_CLANG
+# Basically: FUNCTION_ALIGNMENT - 5*CFI
# except Kconfig can't do arithmetic :/
config FUNCTION_PADDING_BYTES
int
- default FUNCTION_PADDING_CFI if CFI_CLANG
+ default FUNCTION_PADDING_CFI if CFI
default FUNCTION_ALIGNMENT
config CALL_PADDING
@@ -2410,7 +2410,7 @@ config CALL_PADDING
config FINEIBT
def_bool y
- depends on X86_KERNEL_IBT && CFI_CLANG && MITIGATION_RETPOLINE
+ depends on X86_KERNEL_IBT && CFI && MITIGATION_RETPOLINE
select CALL_PADDING
config FINEIBT_BHI
@@ -2427,7 +2427,7 @@ config CALL_THUNKS
config PREFIX_SYMBOLS
def_bool y
- depends on CALL_PADDING && !CFI_CLANG
+ depends on CALL_PADDING && !CFI
menuconfig CPU_MITIGATIONS
bool "Mitigations for CPU vulnerabilities"
diff --git a/arch/x86/configs/xen.config b/arch/x86/configs/xen.config
index d5d091e03bd3..98b6952ba9d2 100644
--- a/arch/x86/configs/xen.config
+++ b/arch/x86/configs/xen.config
@@ -12,7 +12,6 @@ CONFIG_CPU_FREQ=y
# x86 xen specific config options
CONFIG_XEN_PVH=y
-CONFIG_XEN_SAVE_RESTORE=y
# CONFIG_XEN_DEBUG_FS is not set
CONFIG_XEN_MCE_LOG=y
CONFIG_XEN_ACPI_PROCESSOR=m
diff --git a/arch/x86/crypto/Kconfig b/arch/x86/crypto/Kconfig
index 94016c60561e..d9c6fc78cf33 100644
--- a/arch/x86/crypto/Kconfig
+++ b/arch/x86/crypto/Kconfig
@@ -2,19 +2,6 @@
menu "Accelerated Cryptographic Algorithms for CPU (x86)"
-config CRYPTO_CURVE25519_X86
- tristate
- depends on 64BIT
- select CRYPTO_KPP
- select CRYPTO_LIB_CURVE25519_GENERIC
- select CRYPTO_ARCH_HAVE_LIB_CURVE25519
- default CRYPTO_LIB_CURVE25519_INTERNAL
- help
- Curve25519 algorithm
-
- Architecture: x86_64 using:
- - ADX (large integer arithmetic)
-
config CRYPTO_AES_NI_INTEL
tristate "Ciphers: AES, modes: ECB, CBC, CTS, CTR, XCTR, XTS, GCM (AES-NI/VAES)"
select CRYPTO_AEAD
diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index d402963d6b57..dfba7e5e88ea 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -62,8 +62,6 @@ nhpoly1305-sse2-y := nh-sse2-x86_64.o nhpoly1305-sse2-glue.o
obj-$(CONFIG_CRYPTO_NHPOLY1305_AVX2) += nhpoly1305-avx2.o
nhpoly1305-avx2-y := nh-avx2-x86_64.o nhpoly1305-avx2-glue.o
-obj-$(CONFIG_CRYPTO_CURVE25519_X86) += curve25519-x86_64.o
-
obj-$(CONFIG_CRYPTO_SM3_AVX_X86_64) += sm3-avx-x86_64.o
sm3-avx-x86_64-y := sm3-avx-asm_64.o sm3_avx_glue.o
@@ -81,6 +79,3 @@ aria-aesni-avx2-x86_64-y := aria-aesni-avx2-asm_64.o aria_aesni_avx2_glue.o
obj-$(CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64) += aria-gfni-avx512-x86_64.o
aria-gfni-avx512-x86_64-y := aria-gfni-avx512-asm_64.o aria_gfni_avx512_glue.o
-
-# Disable GCOV in odd or sensitive code
-GCOV_PROFILE_curve25519-x86_64.o := n
diff --git a/arch/x86/crypto/curve25519-x86_64.c b/arch/x86/crypto/curve25519-x86_64.c
deleted file mode 100644
index d587f05c3c8c..000000000000
--- a/arch/x86/crypto/curve25519-x86_64.c
+++ /dev/null
@@ -1,1726 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0 OR MIT
-/*
- * Copyright (C) 2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
- * Copyright (c) 2016-2020 INRIA, CMU and Microsoft Corporation
- */
-
-#include <crypto/curve25519.h>
-#include <crypto/internal/kpp.h>
-
-#include <linux/export.h>
-#include <linux/types.h>
-#include <linux/jump_label.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/scatterlist.h>
-
-#include <asm/cpufeature.h>
-#include <asm/processor.h>
-
-static __always_inline u64 eq_mask(u64 a, u64 b)
-{
- u64 x = a ^ b;
- u64 minus_x = ~x + (u64)1U;
- u64 x_or_minus_x = x | minus_x;
- u64 xnx = x_or_minus_x >> (u32)63U;
- return xnx - (u64)1U;
-}
-
-static __always_inline u64 gte_mask(u64 a, u64 b)
-{
- u64 x = a;
- u64 y = b;
- u64 x_xor_y = x ^ y;
- u64 x_sub_y = x - y;
- u64 x_sub_y_xor_y = x_sub_y ^ y;
- u64 q = x_xor_y | x_sub_y_xor_y;
- u64 x_xor_q = x ^ q;
- u64 x_xor_q_ = x_xor_q >> (u32)63U;
- return x_xor_q_ - (u64)1U;
-}
-
-/* Computes the addition of four-element f1 with value in f2
- * and returns the carry (if any) */
-static inline u64 add_scalar(u64 *out, const u64 *f1, u64 f2)
-{
- u64 carry_r;
-
- asm volatile(
- /* Clear registers to propagate the carry bit */
- " xor %%r8d, %%r8d;"
- " xor %%r9d, %%r9d;"
- " xor %%r10d, %%r10d;"
- " xor %%r11d, %%r11d;"
- " xor %k1, %k1;"
-
- /* Begin addition chain */
- " addq 0(%3), %0;"
- " movq %0, 0(%2);"
- " adcxq 8(%3), %%r8;"
- " movq %%r8, 8(%2);"
- " adcxq 16(%3), %%r9;"
- " movq %%r9, 16(%2);"
- " adcxq 24(%3), %%r10;"
- " movq %%r10, 24(%2);"
-
- /* Return the carry bit in a register */
- " adcx %%r11, %1;"
- : "+&r"(f2), "=&r"(carry_r)
- : "r"(out), "r"(f1)
- : "%r8", "%r9", "%r10", "%r11", "memory", "cc");
-
- return carry_r;
-}
-
-/* Computes the field addition of two field elements */
-static inline void fadd(u64 *out, const u64 *f1, const u64 *f2)
-{
- asm volatile(
- /* Compute the raw addition of f1 + f2 */
- " movq 0(%0), %%r8;"
- " addq 0(%2), %%r8;"
- " movq 8(%0), %%r9;"
- " adcxq 8(%2), %%r9;"
- " movq 16(%0), %%r10;"
- " adcxq 16(%2), %%r10;"
- " movq 24(%0), %%r11;"
- " adcxq 24(%2), %%r11;"
-
- /* Wrap the result back into the field */
-
- /* Step 1: Compute carry*38 */
- " mov $0, %%rax;"
- " mov $38, %0;"
- " cmovc %0, %%rax;"
-
- /* Step 2: Add carry*38 to the original sum */
- " xor %%ecx, %%ecx;"
- " add %%rax, %%r8;"
- " adcx %%rcx, %%r9;"
- " movq %%r9, 8(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 16(%1);"
- " adcx %%rcx, %%r11;"
- " movq %%r11, 24(%1);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %0, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%1);"
- : "+&r"(f2)
- : "r"(out), "r"(f1)
- : "%rax", "%rcx", "%r8", "%r9", "%r10", "%r11", "memory", "cc");
-}
-
-/* Computes the field subtraction of two field elements */
-static inline void fsub(u64 *out, const u64 *f1, const u64 *f2)
-{
- asm volatile(
- /* Compute the raw subtraction of f1-f2 */
- " movq 0(%1), %%r8;"
- " subq 0(%2), %%r8;"
- " movq 8(%1), %%r9;"
- " sbbq 8(%2), %%r9;"
- " movq 16(%1), %%r10;"
- " sbbq 16(%2), %%r10;"
- " movq 24(%1), %%r11;"
- " sbbq 24(%2), %%r11;"
-
- /* Wrap the result back into the field */
-
- /* Step 1: Compute carry*38 */
- " mov $0, %%rax;"
- " mov $38, %%rcx;"
- " cmovc %%rcx, %%rax;"
-
- /* Step 2: Subtract carry*38 from the original difference */
- " sub %%rax, %%r8;"
- " sbb $0, %%r9;"
- " sbb $0, %%r10;"
- " sbb $0, %%r11;"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rcx, %%rax;"
- " sub %%rax, %%r8;"
-
- /* Store the result */
- " movq %%r8, 0(%0);"
- " movq %%r9, 8(%0);"
- " movq %%r10, 16(%0);"
- " movq %%r11, 24(%0);"
- :
- : "r"(out), "r"(f1), "r"(f2)
- : "%rax", "%rcx", "%r8", "%r9", "%r10", "%r11", "memory", "cc");
-}
-
-/* Computes a field multiplication: out <- f1 * f2
- * Uses the 8-element buffer tmp for intermediate results */
-static inline void fmul(u64 *out, const u64 *f1, const u64 *f2, u64 *tmp)
-{
- asm volatile(
-
- /* Compute the raw multiplication: tmp <- src1 * src2 */
-
- /* Compute src1[0] * src2 */
- " movq 0(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " movq %%r8, 0(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " movq %%r10, 8(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
-
- /* Compute src1[1] * src2 */
- " movq 8(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 8(%2), %%r8;"
- " movq %%r8, 8(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 16(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[2] * src2 */
- " movq 16(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 16(%2), %%r8;"
- " movq %%r8, 16(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 24(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[3] * src2 */
- " movq 24(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 24(%2), %%r8;"
- " movq %%r8, 24(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 32(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " movq %%rbx, 40(%2);"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " movq %%r14, 48(%2);"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
- " movq %%rax, 56(%2);"
-
- /* Line up pointers */
- " mov %2, %0;"
- " mov %3, %2;"
-
- /* Wrap the result back into the field */
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 32(%0), %%r8, %%r13;"
- " xor %k1, %k1;"
- " adoxq 0(%0), %%r8;"
- " mulxq 40(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 8(%0), %%r9;"
- " mulxq 48(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 16(%0), %%r10;"
- " mulxq 56(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 24(%0), %%r11;"
- " adcx %1, %%rax;"
- " adox %1, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %1, %%r9;"
- " movq %%r9, 8(%2);"
- " adcx %1, %%r10;"
- " movq %%r10, 16(%2);"
- " adcx %1, %%r11;"
- " movq %%r11, 24(%2);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%2);"
- : "+&r"(f1), "+&r"(f2), "+&r"(tmp)
- : "r"(out)
- : "%rax", "%rbx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r13",
- "%r14", "memory", "cc");
-}
-
-/* Computes two field multiplications:
- * out[0] <- f1[0] * f2[0]
- * out[1] <- f1[1] * f2[1]
- * Uses the 16-element buffer tmp for intermediate results: */
-static inline void fmul2(u64 *out, const u64 *f1, const u64 *f2, u64 *tmp)
-{
- asm volatile(
-
- /* Compute the raw multiplication tmp[0] <- f1[0] * f2[0] */
-
- /* Compute src1[0] * src2 */
- " movq 0(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " movq %%r8, 0(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " movq %%r10, 8(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
-
- /* Compute src1[1] * src2 */
- " movq 8(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 8(%2), %%r8;"
- " movq %%r8, 8(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 16(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[2] * src2 */
- " movq 16(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 16(%2), %%r8;"
- " movq %%r8, 16(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 24(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[3] * src2 */
- " movq 24(%0), %%rdx;"
- " mulxq 0(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 24(%2), %%r8;"
- " movq %%r8, 24(%2);"
- " mulxq 8(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 32(%2);"
- " mulxq 16(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " movq %%rbx, 40(%2);"
- " mov $0, %%r8;"
- " mulxq 24(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " movq %%r14, 48(%2);"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
- " movq %%rax, 56(%2);"
-
- /* Compute the raw multiplication tmp[1] <- f1[1] * f2[1] */
-
- /* Compute src1[0] * src2 */
- " movq 32(%0), %%rdx;"
- " mulxq 32(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " movq %%r8, 64(%2);"
- " mulxq 40(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " movq %%r10, 72(%2);"
- " mulxq 48(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " mulxq 56(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
-
- /* Compute src1[1] * src2 */
- " movq 40(%0), %%rdx;"
- " mulxq 32(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 72(%2), %%r8;"
- " movq %%r8, 72(%2);"
- " mulxq 40(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 80(%2);"
- " mulxq 48(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 56(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[2] * src2 */
- " movq 48(%0), %%rdx;"
- " mulxq 32(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 80(%2), %%r8;"
- " movq %%r8, 80(%2);"
- " mulxq 40(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 88(%2);"
- " mulxq 48(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " mov $0, %%r8;"
- " mulxq 56(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
-
- /* Compute src1[3] * src2 */
- " movq 56(%0), %%rdx;"
- " mulxq 32(%1), %%r8, %%r9;"
- " xor %%r10d, %%r10d;"
- " adcxq 88(%2), %%r8;"
- " movq %%r8, 88(%2);"
- " mulxq 40(%1), %%r10, %%r11;"
- " adox %%r9, %%r10;"
- " adcx %%rbx, %%r10;"
- " movq %%r10, 96(%2);"
- " mulxq 48(%1), %%rbx, %%r13;"
- " adox %%r11, %%rbx;"
- " adcx %%r14, %%rbx;"
- " movq %%rbx, 104(%2);"
- " mov $0, %%r8;"
- " mulxq 56(%1), %%r14, %%rdx;"
- " adox %%r13, %%r14;"
- " adcx %%rax, %%r14;"
- " movq %%r14, 112(%2);"
- " mov $0, %%rax;"
- " adox %%rdx, %%rax;"
- " adcx %%r8, %%rax;"
- " movq %%rax, 120(%2);"
-
- /* Line up pointers */
- " mov %2, %0;"
- " mov %3, %2;"
-
- /* Wrap the results back into the field */
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 32(%0), %%r8, %%r13;"
- " xor %k1, %k1;"
- " adoxq 0(%0), %%r8;"
- " mulxq 40(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 8(%0), %%r9;"
- " mulxq 48(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 16(%0), %%r10;"
- " mulxq 56(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 24(%0), %%r11;"
- " adcx %1, %%rax;"
- " adox %1, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %1, %%r9;"
- " movq %%r9, 8(%2);"
- " adcx %1, %%r10;"
- " movq %%r10, 16(%2);"
- " adcx %1, %%r11;"
- " movq %%r11, 24(%2);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%2);"
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 96(%0), %%r8, %%r13;"
- " xor %k1, %k1;"
- " adoxq 64(%0), %%r8;"
- " mulxq 104(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 72(%0), %%r9;"
- " mulxq 112(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 80(%0), %%r10;"
- " mulxq 120(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 88(%0), %%r11;"
- " adcx %1, %%rax;"
- " adox %1, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %1, %%r9;"
- " movq %%r9, 40(%2);"
- " adcx %1, %%r10;"
- " movq %%r10, 48(%2);"
- " adcx %1, %%r11;"
- " movq %%r11, 56(%2);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 32(%2);"
- : "+&r"(f1), "+&r"(f2), "+&r"(tmp)
- : "r"(out)
- : "%rax", "%rbx", "%rdx", "%r8", "%r9", "%r10", "%r11", "%r13",
- "%r14", "memory", "cc");
-}
-
-/* Computes the field multiplication of four-element f1 with value in f2
- * Requires f2 to be smaller than 2^17 */
-static inline void fmul_scalar(u64 *out, const u64 *f1, u64 f2)
-{
- register u64 f2_r asm("rdx") = f2;
-
- asm volatile(
- /* Compute the raw multiplication of f1*f2 */
- " mulxq 0(%2), %%r8, %%rcx;" /* f1[0]*f2 */
- " mulxq 8(%2), %%r9, %%rbx;" /* f1[1]*f2 */
- " add %%rcx, %%r9;"
- " mov $0, %%rcx;"
- " mulxq 16(%2), %%r10, %%r13;" /* f1[2]*f2 */
- " adcx %%rbx, %%r10;"
- " mulxq 24(%2), %%r11, %%rax;" /* f1[3]*f2 */
- " adcx %%r13, %%r11;"
- " adcx %%rcx, %%rax;"
-
- /* Wrap the result back into the field */
-
- /* Step 1: Compute carry*38 */
- " mov $38, %%rdx;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %%rcx, %%r9;"
- " movq %%r9, 8(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 16(%1);"
- " adcx %%rcx, %%r11;"
- " movq %%r11, 24(%1);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%1);"
- : "+&r"(f2_r)
- : "r"(out), "r"(f1)
- : "%rax", "%rbx", "%rcx", "%r8", "%r9", "%r10", "%r11", "%r13",
- "memory", "cc");
-}
-
-/* Computes p1 <- bit ? p2 : p1 in constant time */
-static inline void cswap2(u64 bit, const u64 *p1, const u64 *p2)
-{
- asm volatile(
- /* Transfer bit into CF flag */
- " add $18446744073709551615, %0;"
-
- /* cswap p1[0], p2[0] */
- " movq 0(%1), %%r8;"
- " movq 0(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 0(%1);"
- " movq %%r9, 0(%2);"
-
- /* cswap p1[1], p2[1] */
- " movq 8(%1), %%r8;"
- " movq 8(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 8(%1);"
- " movq %%r9, 8(%2);"
-
- /* cswap p1[2], p2[2] */
- " movq 16(%1), %%r8;"
- " movq 16(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 16(%1);"
- " movq %%r9, 16(%2);"
-
- /* cswap p1[3], p2[3] */
- " movq 24(%1), %%r8;"
- " movq 24(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 24(%1);"
- " movq %%r9, 24(%2);"
-
- /* cswap p1[4], p2[4] */
- " movq 32(%1), %%r8;"
- " movq 32(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 32(%1);"
- " movq %%r9, 32(%2);"
-
- /* cswap p1[5], p2[5] */
- " movq 40(%1), %%r8;"
- " movq 40(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 40(%1);"
- " movq %%r9, 40(%2);"
-
- /* cswap p1[6], p2[6] */
- " movq 48(%1), %%r8;"
- " movq 48(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 48(%1);"
- " movq %%r9, 48(%2);"
-
- /* cswap p1[7], p2[7] */
- " movq 56(%1), %%r8;"
- " movq 56(%2), %%r9;"
- " mov %%r8, %%r10;"
- " cmovc %%r9, %%r8;"
- " cmovc %%r10, %%r9;"
- " movq %%r8, 56(%1);"
- " movq %%r9, 56(%2);"
- : "+&r"(bit)
- : "r"(p1), "r"(p2)
- : "%r8", "%r9", "%r10", "memory", "cc");
-}
-
-/* Computes the square of a field element: out <- f * f
- * Uses the 8-element buffer tmp for intermediate results */
-static inline void fsqr(u64 *out, const u64 *f, u64 *tmp)
-{
- asm volatile(
- /* Compute the raw multiplication: tmp <- f * f */
-
- /* Step 1: Compute all partial products */
- " movq 0(%0), %%rdx;" /* f[0] */
- " mulxq 8(%0), %%r8, %%r14;"
- " xor %%r15d, %%r15d;" /* f[1]*f[0] */
- " mulxq 16(%0), %%r9, %%r10;"
- " adcx %%r14, %%r9;" /* f[2]*f[0] */
- " mulxq 24(%0), %%rax, %%rcx;"
- " adcx %%rax, %%r10;" /* f[3]*f[0] */
- " movq 24(%0), %%rdx;" /* f[3] */
- " mulxq 8(%0), %%r11, %%rbx;"
- " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 16(%0), %%rax, %%r13;"
- " adcx %%rax, %%rbx;" /* f[2]*f[3] */
- " movq 8(%0), %%rdx;"
- " adcx %%r15, %%r13;" /* f1 */
- " mulxq 16(%0), %%rax, %%rcx;"
- " mov $0, %%r14;" /* f[2]*f[1] */
-
- /* Step 2: Compute two parallel carry chains */
- " xor %%r15d, %%r15d;"
- " adox %%rax, %%r10;"
- " adcx %%r8, %%r8;"
- " adox %%rcx, %%r11;"
- " adcx %%r9, %%r9;"
- " adox %%r15, %%rbx;"
- " adcx %%r10, %%r10;"
- " adox %%r15, %%r13;"
- " adcx %%r11, %%r11;"
- " adox %%r15, %%r14;"
- " adcx %%rbx, %%rbx;"
- " adcx %%r13, %%r13;"
- " adcx %%r14, %%r14;"
-
- /* Step 3: Compute intermediate squares */
- " movq 0(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[0]^2 */
- " movq %%rax, 0(%1);"
- " add %%rcx, %%r8;"
- " movq %%r8, 8(%1);"
- " movq 8(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[1]^2 */
- " adcx %%rax, %%r9;"
- " movq %%r9, 16(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 24(%1);"
- " movq 16(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
- " adcx %%rax, %%r11;"
- " movq %%r11, 32(%1);"
- " adcx %%rcx, %%rbx;"
- " movq %%rbx, 40(%1);"
- " movq 24(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
- " adcx %%rax, %%r13;"
- " movq %%r13, 48(%1);"
- " adcx %%rcx, %%r14;"
- " movq %%r14, 56(%1);"
-
- /* Line up pointers */
- " mov %1, %0;"
- " mov %2, %1;"
-
- /* Wrap the result back into the field */
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 32(%0), %%r8, %%r13;"
- " xor %%ecx, %%ecx;"
- " adoxq 0(%0), %%r8;"
- " mulxq 40(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 8(%0), %%r9;"
- " mulxq 48(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 16(%0), %%r10;"
- " mulxq 56(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 24(%0), %%r11;"
- " adcx %%rcx, %%rax;"
- " adox %%rcx, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %%rcx, %%r9;"
- " movq %%r9, 8(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 16(%1);"
- " adcx %%rcx, %%r11;"
- " movq %%r11, 24(%1);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%1);"
- : "+&r"(f), "+&r"(tmp)
- : "r"(out)
- : "%rax", "%rbx", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11",
- "%r13", "%r14", "%r15", "memory", "cc");
-}
-
-/* Computes two field squarings:
- * out[0] <- f[0] * f[0]
- * out[1] <- f[1] * f[1]
- * Uses the 16-element buffer tmp for intermediate results */
-static inline void fsqr2(u64 *out, const u64 *f, u64 *tmp)
-{
- asm volatile(
- /* Step 1: Compute all partial products */
- " movq 0(%0), %%rdx;" /* f[0] */
- " mulxq 8(%0), %%r8, %%r14;"
- " xor %%r15d, %%r15d;" /* f[1]*f[0] */
- " mulxq 16(%0), %%r9, %%r10;"
- " adcx %%r14, %%r9;" /* f[2]*f[0] */
- " mulxq 24(%0), %%rax, %%rcx;"
- " adcx %%rax, %%r10;" /* f[3]*f[0] */
- " movq 24(%0), %%rdx;" /* f[3] */
- " mulxq 8(%0), %%r11, %%rbx;"
- " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 16(%0), %%rax, %%r13;"
- " adcx %%rax, %%rbx;" /* f[2]*f[3] */
- " movq 8(%0), %%rdx;"
- " adcx %%r15, %%r13;" /* f1 */
- " mulxq 16(%0), %%rax, %%rcx;"
- " mov $0, %%r14;" /* f[2]*f[1] */
-
- /* Step 2: Compute two parallel carry chains */
- " xor %%r15d, %%r15d;"
- " adox %%rax, %%r10;"
- " adcx %%r8, %%r8;"
- " adox %%rcx, %%r11;"
- " adcx %%r9, %%r9;"
- " adox %%r15, %%rbx;"
- " adcx %%r10, %%r10;"
- " adox %%r15, %%r13;"
- " adcx %%r11, %%r11;"
- " adox %%r15, %%r14;"
- " adcx %%rbx, %%rbx;"
- " adcx %%r13, %%r13;"
- " adcx %%r14, %%r14;"
-
- /* Step 3: Compute intermediate squares */
- " movq 0(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[0]^2 */
- " movq %%rax, 0(%1);"
- " add %%rcx, %%r8;"
- " movq %%r8, 8(%1);"
- " movq 8(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[1]^2 */
- " adcx %%rax, %%r9;"
- " movq %%r9, 16(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 24(%1);"
- " movq 16(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
- " adcx %%rax, %%r11;"
- " movq %%r11, 32(%1);"
- " adcx %%rcx, %%rbx;"
- " movq %%rbx, 40(%1);"
- " movq 24(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
- " adcx %%rax, %%r13;"
- " movq %%r13, 48(%1);"
- " adcx %%rcx, %%r14;"
- " movq %%r14, 56(%1);"
-
- /* Step 1: Compute all partial products */
- " movq 32(%0), %%rdx;" /* f[0] */
- " mulxq 40(%0), %%r8, %%r14;"
- " xor %%r15d, %%r15d;" /* f[1]*f[0] */
- " mulxq 48(%0), %%r9, %%r10;"
- " adcx %%r14, %%r9;" /* f[2]*f[0] */
- " mulxq 56(%0), %%rax, %%rcx;"
- " adcx %%rax, %%r10;" /* f[3]*f[0] */
- " movq 56(%0), %%rdx;" /* f[3] */
- " mulxq 40(%0), %%r11, %%rbx;"
- " adcx %%rcx, %%r11;" /* f[1]*f[3] */
- " mulxq 48(%0), %%rax, %%r13;"
- " adcx %%rax, %%rbx;" /* f[2]*f[3] */
- " movq 40(%0), %%rdx;"
- " adcx %%r15, %%r13;" /* f1 */
- " mulxq 48(%0), %%rax, %%rcx;"
- " mov $0, %%r14;" /* f[2]*f[1] */
-
- /* Step 2: Compute two parallel carry chains */
- " xor %%r15d, %%r15d;"
- " adox %%rax, %%r10;"
- " adcx %%r8, %%r8;"
- " adox %%rcx, %%r11;"
- " adcx %%r9, %%r9;"
- " adox %%r15, %%rbx;"
- " adcx %%r10, %%r10;"
- " adox %%r15, %%r13;"
- " adcx %%r11, %%r11;"
- " adox %%r15, %%r14;"
- " adcx %%rbx, %%rbx;"
- " adcx %%r13, %%r13;"
- " adcx %%r14, %%r14;"
-
- /* Step 3: Compute intermediate squares */
- " movq 32(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[0]^2 */
- " movq %%rax, 64(%1);"
- " add %%rcx, %%r8;"
- " movq %%r8, 72(%1);"
- " movq 40(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[1]^2 */
- " adcx %%rax, %%r9;"
- " movq %%r9, 80(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 88(%1);"
- " movq 48(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[2]^2 */
- " adcx %%rax, %%r11;"
- " movq %%r11, 96(%1);"
- " adcx %%rcx, %%rbx;"
- " movq %%rbx, 104(%1);"
- " movq 56(%0), %%rdx;"
- " mulx %%rdx, %%rax, %%rcx;" /* f[3]^2 */
- " adcx %%rax, %%r13;"
- " movq %%r13, 112(%1);"
- " adcx %%rcx, %%r14;"
- " movq %%r14, 120(%1);"
-
- /* Line up pointers */
- " mov %1, %0;"
- " mov %2, %1;"
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 32(%0), %%r8, %%r13;"
- " xor %%ecx, %%ecx;"
- " adoxq 0(%0), %%r8;"
- " mulxq 40(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 8(%0), %%r9;"
- " mulxq 48(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 16(%0), %%r10;"
- " mulxq 56(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 24(%0), %%r11;"
- " adcx %%rcx, %%rax;"
- " adox %%rcx, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %%rcx, %%r9;"
- " movq %%r9, 8(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 16(%1);"
- " adcx %%rcx, %%r11;"
- " movq %%r11, 24(%1);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 0(%1);"
-
- /* Step 1: Compute dst + carry == tmp_hi * 38 + tmp_lo */
- " mov $38, %%rdx;"
- " mulxq 96(%0), %%r8, %%r13;"
- " xor %%ecx, %%ecx;"
- " adoxq 64(%0), %%r8;"
- " mulxq 104(%0), %%r9, %%rbx;"
- " adcx %%r13, %%r9;"
- " adoxq 72(%0), %%r9;"
- " mulxq 112(%0), %%r10, %%r13;"
- " adcx %%rbx, %%r10;"
- " adoxq 80(%0), %%r10;"
- " mulxq 120(%0), %%r11, %%rax;"
- " adcx %%r13, %%r11;"
- " adoxq 88(%0), %%r11;"
- " adcx %%rcx, %%rax;"
- " adox %%rcx, %%rax;"
- " imul %%rdx, %%rax;"
-
- /* Step 2: Fold the carry back into dst */
- " add %%rax, %%r8;"
- " adcx %%rcx, %%r9;"
- " movq %%r9, 40(%1);"
- " adcx %%rcx, %%r10;"
- " movq %%r10, 48(%1);"
- " adcx %%rcx, %%r11;"
- " movq %%r11, 56(%1);"
-
- /* Step 3: Fold the carry bit back in; guaranteed not to carry at this point */
- " mov $0, %%rax;"
- " cmovc %%rdx, %%rax;"
- " add %%rax, %%r8;"
- " movq %%r8, 32(%1);"
- : "+&r"(f), "+&r"(tmp)
- : "r"(out)
- : "%rax", "%rbx", "%rcx", "%rdx", "%r8", "%r9", "%r10", "%r11",
- "%r13", "%r14", "%r15", "memory", "cc");
-}
-
-static void point_add_and_double(u64 *q, u64 *p01_tmp1, u64 *tmp2)
-{
- u64 *nq = p01_tmp1;
- u64 *nq_p1 = p01_tmp1 + (u32)8U;
- u64 *tmp1 = p01_tmp1 + (u32)16U;
- u64 *x1 = q;
- u64 *x2 = nq;
- u64 *z2 = nq + (u32)4U;
- u64 *z3 = nq_p1 + (u32)4U;
- u64 *a = tmp1;
- u64 *b = tmp1 + (u32)4U;
- u64 *ab = tmp1;
- u64 *dc = tmp1 + (u32)8U;
- u64 *x3;
- u64 *z31;
- u64 *d0;
- u64 *c0;
- u64 *a1;
- u64 *b1;
- u64 *d;
- u64 *c;
- u64 *ab1;
- u64 *dc1;
- fadd(a, x2, z2);
- fsub(b, x2, z2);
- x3 = nq_p1;
- z31 = nq_p1 + (u32)4U;
- d0 = dc;
- c0 = dc + (u32)4U;
- fadd(c0, x3, z31);
- fsub(d0, x3, z31);
- fmul2(dc, dc, ab, tmp2);
- fadd(x3, d0, c0);
- fsub(z31, d0, c0);
- a1 = tmp1;
- b1 = tmp1 + (u32)4U;
- d = tmp1 + (u32)8U;
- c = tmp1 + (u32)12U;
- ab1 = tmp1;
- dc1 = tmp1 + (u32)8U;
- fsqr2(dc1, ab1, tmp2);
- fsqr2(nq_p1, nq_p1, tmp2);
- a1[0U] = c[0U];
- a1[1U] = c[1U];
- a1[2U] = c[2U];
- a1[3U] = c[3U];
- fsub(c, d, c);
- fmul_scalar(b1, c, (u64)121665U);
- fadd(b1, b1, d);
- fmul2(nq, dc1, ab1, tmp2);
- fmul(z3, z3, x1, tmp2);
-}
-
-static void point_double(u64 *nq, u64 *tmp1, u64 *tmp2)
-{
- u64 *x2 = nq;
- u64 *z2 = nq + (u32)4U;
- u64 *a = tmp1;
- u64 *b = tmp1 + (u32)4U;
- u64 *d = tmp1 + (u32)8U;
- u64 *c = tmp1 + (u32)12U;
- u64 *ab = tmp1;
- u64 *dc = tmp1 + (u32)8U;
- fadd(a, x2, z2);
- fsub(b, x2, z2);
- fsqr2(dc, ab, tmp2);
- a[0U] = c[0U];
- a[1U] = c[1U];
- a[2U] = c[2U];
- a[3U] = c[3U];
- fsub(c, d, c);
- fmul_scalar(b, c, (u64)121665U);
- fadd(b, b, d);
- fmul2(nq, dc, ab, tmp2);
-}
-
-static void montgomery_ladder(u64 *out, const u8 *key, u64 *init1)
-{
- u64 tmp2[16U] = { 0U };
- u64 p01_tmp1_swap[33U] = { 0U };
- u64 *p0 = p01_tmp1_swap;
- u64 *p01 = p01_tmp1_swap;
- u64 *p03 = p01;
- u64 *p11 = p01 + (u32)8U;
- u64 *x0;
- u64 *z0;
- u64 *p01_tmp1;
- u64 *p01_tmp11;
- u64 *nq10;
- u64 *nq_p11;
- u64 *swap1;
- u64 sw0;
- u64 *nq1;
- u64 *tmp1;
- memcpy(p11, init1, (u32)8U * sizeof(init1[0U]));
- x0 = p03;
- z0 = p03 + (u32)4U;
- x0[0U] = (u64)1U;
- x0[1U] = (u64)0U;
- x0[2U] = (u64)0U;
- x0[3U] = (u64)0U;
- z0[0U] = (u64)0U;
- z0[1U] = (u64)0U;
- z0[2U] = (u64)0U;
- z0[3U] = (u64)0U;
- p01_tmp1 = p01_tmp1_swap;
- p01_tmp11 = p01_tmp1_swap;
- nq10 = p01_tmp1_swap;
- nq_p11 = p01_tmp1_swap + (u32)8U;
- swap1 = p01_tmp1_swap + (u32)32U;
- cswap2((u64)1U, nq10, nq_p11);
- point_add_and_double(init1, p01_tmp11, tmp2);
- swap1[0U] = (u64)1U;
- {
- u32 i;
- for (i = (u32)0U; i < (u32)251U; i = i + (u32)1U) {
- u64 *p01_tmp12 = p01_tmp1_swap;
- u64 *swap2 = p01_tmp1_swap + (u32)32U;
- u64 *nq2 = p01_tmp12;
- u64 *nq_p12 = p01_tmp12 + (u32)8U;
- u64 bit = (u64)(key[((u32)253U - i) / (u32)8U] >> ((u32)253U - i) % (u32)8U & (u8)1U);
- u64 sw = swap2[0U] ^ bit;
- cswap2(sw, nq2, nq_p12);
- point_add_and_double(init1, p01_tmp12, tmp2);
- swap2[0U] = bit;
- }
- }
- sw0 = swap1[0U];
- cswap2(sw0, nq10, nq_p11);
- nq1 = p01_tmp1;
- tmp1 = p01_tmp1 + (u32)16U;
- point_double(nq1, tmp1, tmp2);
- point_double(nq1, tmp1, tmp2);
- point_double(nq1, tmp1, tmp2);
- memcpy(out, p0, (u32)8U * sizeof(p0[0U]));
-
- memzero_explicit(tmp2, sizeof(tmp2));
- memzero_explicit(p01_tmp1_swap, sizeof(p01_tmp1_swap));
-}
-
-static void fsquare_times(u64 *o, const u64 *inp, u64 *tmp, u32 n1)
-{
- u32 i;
- fsqr(o, inp, tmp);
- for (i = (u32)0U; i < n1 - (u32)1U; i = i + (u32)1U)
- fsqr(o, o, tmp);
-}
-
-static void finv(u64 *o, const u64 *i, u64 *tmp)
-{
- u64 t1[16U] = { 0U };
- u64 *a0 = t1;
- u64 *b = t1 + (u32)4U;
- u64 *c = t1 + (u32)8U;
- u64 *t00 = t1 + (u32)12U;
- u64 *tmp1 = tmp;
- u64 *a;
- u64 *t0;
- fsquare_times(a0, i, tmp1, (u32)1U);
- fsquare_times(t00, a0, tmp1, (u32)2U);
- fmul(b, t00, i, tmp);
- fmul(a0, b, a0, tmp);
- fsquare_times(t00, a0, tmp1, (u32)1U);
- fmul(b, t00, b, tmp);
- fsquare_times(t00, b, tmp1, (u32)5U);
- fmul(b, t00, b, tmp);
- fsquare_times(t00, b, tmp1, (u32)10U);
- fmul(c, t00, b, tmp);
- fsquare_times(t00, c, tmp1, (u32)20U);
- fmul(t00, t00, c, tmp);
- fsquare_times(t00, t00, tmp1, (u32)10U);
- fmul(b, t00, b, tmp);
- fsquare_times(t00, b, tmp1, (u32)50U);
- fmul(c, t00, b, tmp);
- fsquare_times(t00, c, tmp1, (u32)100U);
- fmul(t00, t00, c, tmp);
- fsquare_times(t00, t00, tmp1, (u32)50U);
- fmul(t00, t00, b, tmp);
- fsquare_times(t00, t00, tmp1, (u32)5U);
- a = t1;
- t0 = t1 + (u32)12U;
- fmul(o, t0, a, tmp);
-}
-
-static void store_felem(u64 *b, u64 *f)
-{
- u64 f30 = f[3U];
- u64 top_bit0 = f30 >> (u32)63U;
- u64 f31;
- u64 top_bit;
- u64 f0;
- u64 f1;
- u64 f2;
- u64 f3;
- u64 m0;
- u64 m1;
- u64 m2;
- u64 m3;
- u64 mask;
- u64 f0_;
- u64 f1_;
- u64 f2_;
- u64 f3_;
- u64 o0;
- u64 o1;
- u64 o2;
- u64 o3;
- f[3U] = f30 & (u64)0x7fffffffffffffffU;
- add_scalar(f, f, (u64)19U * top_bit0);
- f31 = f[3U];
- top_bit = f31 >> (u32)63U;
- f[3U] = f31 & (u64)0x7fffffffffffffffU;
- add_scalar(f, f, (u64)19U * top_bit);
- f0 = f[0U];
- f1 = f[1U];
- f2 = f[2U];
- f3 = f[3U];
- m0 = gte_mask(f0, (u64)0xffffffffffffffedU);
- m1 = eq_mask(f1, (u64)0xffffffffffffffffU);
- m2 = eq_mask(f2, (u64)0xffffffffffffffffU);
- m3 = eq_mask(f3, (u64)0x7fffffffffffffffU);
- mask = ((m0 & m1) & m2) & m3;
- f0_ = f0 - (mask & (u64)0xffffffffffffffedU);
- f1_ = f1 - (mask & (u64)0xffffffffffffffffU);
- f2_ = f2 - (mask & (u64)0xffffffffffffffffU);
- f3_ = f3 - (mask & (u64)0x7fffffffffffffffU);
- o0 = f0_;
- o1 = f1_;
- o2 = f2_;
- o3 = f3_;
- b[0U] = o0;
- b[1U] = o1;
- b[2U] = o2;
- b[3U] = o3;
-}
-
-static void encode_point(u8 *o, const u64 *i)
-{
- const u64 *x = i;
- const u64 *z = i + (u32)4U;
- u64 tmp[4U] = { 0U };
- u64 tmp_w[16U] = { 0U };
- finv(tmp, z, tmp_w);
- fmul(tmp, tmp, x, tmp_w);
- store_felem((u64 *)o, tmp);
-}
-
-static void curve25519_ever64(u8 *out, const u8 *priv, const u8 *pub)
-{
- u64 init1[8U] = { 0U };
- u64 tmp[4U] = { 0U };
- u64 tmp3;
- u64 *x;
- u64 *z;
- {
- u32 i;
- for (i = (u32)0U; i < (u32)4U; i = i + (u32)1U) {
- u64 *os = tmp;
- const u8 *bj = pub + i * (u32)8U;
- u64 u = *(u64 *)bj;
- u64 r = u;
- u64 x0 = r;
- os[i] = x0;
- }
- }
- tmp3 = tmp[3U];
- tmp[3U] = tmp3 & (u64)0x7fffffffffffffffU;
- x = init1;
- z = init1 + (u32)4U;
- z[0U] = (u64)1U;
- z[1U] = (u64)0U;
- z[2U] = (u64)0U;
- z[3U] = (u64)0U;
- x[0U] = tmp[0U];
- x[1U] = tmp[1U];
- x[2U] = tmp[2U];
- x[3U] = tmp[3U];
- montgomery_ladder(init1, priv, init1);
- encode_point(out, init1);
-}
-
-/* The below constants were generated using this sage script:
- *
- * #!/usr/bin/env sage
- * import sys
- * from sage.all import *
- * def limbs(n):
- * n = int(n)
- * l = ((n >> 0) % 2^64, (n >> 64) % 2^64, (n >> 128) % 2^64, (n >> 192) % 2^64)
- * return "0x%016xULL, 0x%016xULL, 0x%016xULL, 0x%016xULL" % l
- * ec = EllipticCurve(GF(2^255 - 19), [0, 486662, 0, 1, 0])
- * p_minus_s = (ec.lift_x(9) - ec.lift_x(1))[0]
- * print("static const u64 p_minus_s[] = { %s };\n" % limbs(p_minus_s))
- * print("static const u64 table_ladder[] = {")
- * p = ec.lift_x(9)
- * for i in range(252):
- * l = (p[0] + p[2]) / (p[0] - p[2])
- * print(("\t%s" + ("," if i != 251 else "")) % limbs(l))
- * p = p * 2
- * print("};")
- *
- */
-
-static const u64 p_minus_s[] = { 0x816b1e0137d48290ULL, 0x440f6a51eb4d1207ULL, 0x52385f46dca2b71dULL, 0x215132111d8354cbULL };
-
-static const u64 table_ladder[] = {
- 0xfffffffffffffff3ULL, 0xffffffffffffffffULL, 0xffffffffffffffffULL, 0x5fffffffffffffffULL,
- 0x6b8220f416aafe96ULL, 0x82ebeb2b4f566a34ULL, 0xd5a9a5b075a5950fULL, 0x5142b2cf4b2488f4ULL,
- 0x6aaebc750069680cULL, 0x89cf7820a0f99c41ULL, 0x2a58d9183b56d0f4ULL, 0x4b5aca80e36011a4ULL,
- 0x329132348c29745dULL, 0xf4a2e616e1642fd7ULL, 0x1e45bb03ff67bc34ULL, 0x306912d0f42a9b4aULL,
- 0xff886507e6af7154ULL, 0x04f50e13dfeec82fULL, 0xaa512fe82abab5ceULL, 0x174e251a68d5f222ULL,
- 0xcf96700d82028898ULL, 0x1743e3370a2c02c5ULL, 0x379eec98b4e86eaaULL, 0x0c59888a51e0482eULL,
- 0xfbcbf1d699b5d189ULL, 0xacaef0d58e9fdc84ULL, 0xc1c20d06231f7614ULL, 0x2938218da274f972ULL,
- 0xf6af49beff1d7f18ULL, 0xcc541c22387ac9c2ULL, 0x96fcc9ef4015c56bULL, 0x69c1627c690913a9ULL,
- 0x7a86fd2f4733db0eULL, 0xfdb8c4f29e087de9ULL, 0x095e4b1a8ea2a229ULL, 0x1ad7a7c829b37a79ULL,
- 0x342d89cad17ea0c0ULL, 0x67bedda6cced2051ULL, 0x19ca31bf2bb42f74ULL, 0x3df7b4c84980acbbULL,
- 0xa8c6444dc80ad883ULL, 0xb91e440366e3ab85ULL, 0xc215cda00164f6d8ULL, 0x3d867c6ef247e668ULL,
- 0xc7dd582bcc3e658cULL, 0xfd2c4748ee0e5528ULL, 0xa0fd9b95cc9f4f71ULL, 0x7529d871b0675ddfULL,
- 0xb8f568b42d3cbd78ULL, 0x1233011b91f3da82ULL, 0x2dce6ccd4a7c3b62ULL, 0x75e7fc8e9e498603ULL,
- 0x2f4f13f1fcd0b6ecULL, 0xf1a8ca1f29ff7a45ULL, 0xc249c1a72981e29bULL, 0x6ebe0dbb8c83b56aULL,
- 0x7114fa8d170bb222ULL, 0x65a2dcd5bf93935fULL, 0xbdc41f68b59c979aULL, 0x2f0eef79a2ce9289ULL,
- 0x42ecbf0c083c37ceULL, 0x2930bc09ec496322ULL, 0xf294b0c19cfeac0dULL, 0x3780aa4bedfabb80ULL,
- 0x56c17d3e7cead929ULL, 0xe7cb4beb2e5722c5ULL, 0x0ce931732dbfe15aULL, 0x41b883c7621052f8ULL,
- 0xdbf75ca0c3d25350ULL, 0x2936be086eb1e351ULL, 0xc936e03cb4a9b212ULL, 0x1d45bf82322225aaULL,
- 0xe81ab1036a024cc5ULL, 0xe212201c304c9a72ULL, 0xc5d73fba6832b1fcULL, 0x20ffdb5a4d839581ULL,
- 0xa283d367be5d0fadULL, 0x6c2b25ca8b164475ULL, 0x9d4935467caaf22eULL, 0x5166408eee85ff49ULL,
- 0x3c67baa2fab4e361ULL, 0xb3e433c67ef35cefULL, 0x5259729241159b1cULL, 0x6a621892d5b0ab33ULL,
- 0x20b74a387555cdcbULL, 0x532aa10e1208923fULL, 0xeaa17b7762281dd1ULL, 0x61ab3443f05c44bfULL,
- 0x257a6c422324def8ULL, 0x131c6c1017e3cf7fULL, 0x23758739f630a257ULL, 0x295a407a01a78580ULL,
- 0xf8c443246d5da8d9ULL, 0x19d775450c52fa5dULL, 0x2afcfc92731bf83dULL, 0x7d10c8e81b2b4700ULL,
- 0xc8e0271f70baa20bULL, 0x993748867ca63957ULL, 0x5412efb3cb7ed4bbULL, 0x3196d36173e62975ULL,
- 0xde5bcad141c7dffcULL, 0x47cc8cd2b395c848ULL, 0xa34cd942e11af3cbULL, 0x0256dbf2d04ecec2ULL,
- 0x875ab7e94b0e667fULL, 0xcad4dd83c0850d10ULL, 0x47f12e8f4e72c79fULL, 0x5f1a87bb8c85b19bULL,
- 0x7ae9d0b6437f51b8ULL, 0x12c7ce5518879065ULL, 0x2ade09fe5cf77aeeULL, 0x23a05a2f7d2c5627ULL,
- 0x5908e128f17c169aULL, 0xf77498dd8ad0852dULL, 0x74b4c4ceab102f64ULL, 0x183abadd10139845ULL,
- 0xb165ba8daa92aaacULL, 0xd5c5ef9599386705ULL, 0xbe2f8f0cf8fc40d1ULL, 0x2701e635ee204514ULL,
- 0x629fa80020156514ULL, 0xf223868764a8c1ceULL, 0x5b894fff0b3f060eULL, 0x60d9944cf708a3faULL,
- 0xaeea001a1c7a201fULL, 0xebf16a633ee2ce63ULL, 0x6f7709594c7a07e1ULL, 0x79b958150d0208cbULL,
- 0x24b55e5301d410e7ULL, 0xe3a34edff3fdc84dULL, 0xd88768e4904032d8ULL, 0x131384427b3aaeecULL,
- 0x8405e51286234f14ULL, 0x14dc4739adb4c529ULL, 0xb8a2b5b250634ffdULL, 0x2fe2a94ad8a7ff93ULL,
- 0xec5c57efe843faddULL, 0x2843ce40f0bb9918ULL, 0xa4b561d6cf3d6305ULL, 0x743629bde8fb777eULL,
- 0x343edd46bbaf738fULL, 0xed981828b101a651ULL, 0xa401760b882c797aULL, 0x1fc223e28dc88730ULL,
- 0x48604e91fc0fba0eULL, 0xb637f78f052c6fa4ULL, 0x91ccac3d09e9239cULL, 0x23f7eed4437a687cULL,
- 0x5173b1118d9bd800ULL, 0x29d641b63189d4a7ULL, 0xfdbf177988bbc586ULL, 0x2959894fcad81df5ULL,
- 0xaebc8ef3b4bbc899ULL, 0x4148995ab26992b9ULL, 0x24e20b0134f92cfbULL, 0x40d158894a05dee8ULL,
- 0x46b00b1185af76f6ULL, 0x26bac77873187a79ULL, 0x3dc0bf95ab8fff5fULL, 0x2a608bd8945524d7ULL,
- 0x26449588bd446302ULL, 0x7c4bc21c0388439cULL, 0x8e98a4f383bd11b2ULL, 0x26218d7bc9d876b9ULL,
- 0xe3081542997c178aULL, 0x3c2d29a86fb6606fULL, 0x5c217736fa279374ULL, 0x7dde05734afeb1faULL,
- 0x3bf10e3906d42babULL, 0xe4f7803e1980649cULL, 0xe6053bf89595bf7aULL, 0x394faf38da245530ULL,
- 0x7a8efb58896928f4ULL, 0xfbc778e9cc6a113cULL, 0x72670ce330af596fULL, 0x48f222a81d3d6cf7ULL,
- 0xf01fce410d72caa7ULL, 0x5a20ecc7213b5595ULL, 0x7bc21165c1fa1483ULL, 0x07f89ae31da8a741ULL,
- 0x05d2c2b4c6830ff9ULL, 0xd43e330fc6316293ULL, 0xa5a5590a96d3a904ULL, 0x705edb91a65333b6ULL,
- 0x048ee15e0bb9a5f7ULL, 0x3240cfca9e0aaf5dULL, 0x8f4b71ceedc4a40bULL, 0x621c0da3de544a6dULL,
- 0x92872836a08c4091ULL, 0xce8375b010c91445ULL, 0x8a72eb524f276394ULL, 0x2667fcfa7ec83635ULL,
- 0x7f4c173345e8752aULL, 0x061b47feee7079a5ULL, 0x25dd9afa9f86ff34ULL, 0x3780cef5425dc89cULL,
- 0x1a46035a513bb4e9ULL, 0x3e1ef379ac575adaULL, 0xc78c5f1c5fa24b50ULL, 0x321a967634fd9f22ULL,
- 0x946707b8826e27faULL, 0x3dca84d64c506fd0ULL, 0xc189218075e91436ULL, 0x6d9284169b3b8484ULL,
- 0x3a67e840383f2ddfULL, 0x33eec9a30c4f9b75ULL, 0x3ec7c86fa783ef47ULL, 0x26ec449fbac9fbc4ULL,
- 0x5c0f38cba09b9e7dULL, 0x81168cc762a3478cULL, 0x3e23b0d306fc121cULL, 0x5a238aa0a5efdcddULL,
- 0x1ba26121c4ea43ffULL, 0x36f8c77f7c8832b5ULL, 0x88fbea0b0adcf99aULL, 0x5ca9938ec25bebf9ULL,
- 0xd5436a5e51fccda0ULL, 0x1dbc4797c2cd893bULL, 0x19346a65d3224a08ULL, 0x0f5034e49b9af466ULL,
- 0xf23c3967a1e0b96eULL, 0xe58b08fa867a4d88ULL, 0xfb2fabc6a7341679ULL, 0x2a75381eb6026946ULL,
- 0xc80a3be4c19420acULL, 0x66b1f6c681f2b6dcULL, 0x7cf7036761e93388ULL, 0x25abbbd8a660a4c4ULL,
- 0x91ea12ba14fd5198ULL, 0x684950fc4a3cffa9ULL, 0xf826842130f5ad28ULL, 0x3ea988f75301a441ULL,
- 0xc978109a695f8c6fULL, 0x1746eb4a0530c3f3ULL, 0x444d6d77b4459995ULL, 0x75952b8c054e5cc7ULL,
- 0xa3703f7915f4d6aaULL, 0x66c346202f2647d8ULL, 0xd01469df811d644bULL, 0x77fea47d81a5d71fULL,
- 0xc5e9529ef57ca381ULL, 0x6eeeb4b9ce2f881aULL, 0xb6e91a28e8009bd6ULL, 0x4b80be3e9afc3fecULL,
- 0x7e3773c526aed2c5ULL, 0x1b4afcb453c9a49dULL, 0xa920bdd7baffb24dULL, 0x7c54699f122d400eULL,
- 0xef46c8e14fa94bc8ULL, 0xe0b074ce2952ed5eULL, 0xbea450e1dbd885d5ULL, 0x61b68649320f712cULL,
- 0x8a485f7309ccbdd1ULL, 0xbd06320d7d4d1a2dULL, 0x25232973322dbef4ULL, 0x445dc4758c17f770ULL,
- 0xdb0434177cc8933cULL, 0xed6fe82175ea059fULL, 0x1efebefdc053db34ULL, 0x4adbe867c65daf99ULL,
- 0x3acd71a2a90609dfULL, 0xe5e991856dd04050ULL, 0x1ec69b688157c23cULL, 0x697427f6885cfe4dULL,
- 0xd7be7b9b65e1a851ULL, 0xa03d28d522c536ddULL, 0x28399d658fd2b645ULL, 0x49e5b7e17c2641e1ULL,
- 0x6f8c3a98700457a4ULL, 0x5078f0a25ebb6778ULL, 0xd13c3ccbc382960fULL, 0x2e003258a7df84b1ULL,
- 0x8ad1f39be6296a1cULL, 0xc1eeaa652a5fbfb2ULL, 0x33ee0673fd26f3cbULL, 0x59256173a69d2cccULL,
- 0x41ea07aa4e18fc41ULL, 0xd9fc19527c87a51eULL, 0xbdaacb805831ca6fULL, 0x445b652dc916694fULL,
- 0xce92a3a7f2172315ULL, 0x1edc282de11b9964ULL, 0xa1823aafe04c314aULL, 0x790a2d94437cf586ULL,
- 0x71c447fb93f6e009ULL, 0x8922a56722845276ULL, 0xbf70903b204f5169ULL, 0x2f7a89891ba319feULL,
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- 0xc0462b18b8b2b4eeULL, 0x7cc8d950274d1afbULL, 0xf25f7105436b02d2ULL, 0x43bbf8dcbff9ccd3ULL,
- 0xb6ad1767a039e9dfULL, 0xb0714da8f69d3583ULL, 0x5e55fa18b42931f5ULL, 0x4ed5558f33c60961ULL,
- 0x1fe37901c647a5ddULL, 0x593ddf1f8081d357ULL, 0x0249a4fd813fd7a6ULL, 0x69acca274e9caf61ULL,
- 0x047ba3ea330721c9ULL, 0x83423fc20e7e1ea0ULL, 0x1df4c0af01314a60ULL, 0x09a62dab89289527ULL,
- 0xa5b325a49cc6cb00ULL, 0xe94b5dc654b56cb6ULL, 0x3be28779adc994a0ULL, 0x4296e8f8ba3a4aadULL,
- 0x328689761e451eabULL, 0x2e4d598bff59594aULL, 0x49b96853d7a7084aULL, 0x4980a319601420a8ULL,
- 0x9565b9e12f552c42ULL, 0x8a5318db7100fe96ULL, 0x05c90b4d43add0d7ULL, 0x538b4cd66a5d4edaULL,
- 0xf4e94fc3e89f039fULL, 0x592c9af26f618045ULL, 0x08a36eb5fd4b9550ULL, 0x25fffaf6c2ed1419ULL,
- 0x34434459cc79d354ULL, 0xeeecbfb4b1d5476bULL, 0xddeb34a061615d99ULL, 0x5129cecceb64b773ULL,
- 0xee43215894993520ULL, 0x772f9c7cf14c0b3bULL, 0xd2e2fce306bedad5ULL, 0x715f42b546f06a97ULL,
- 0x434ecdceda5b5f1aULL, 0x0da17115a49741a9ULL, 0x680bd77c73edad2eULL, 0x487c02354edd9041ULL,
- 0xb8efeff3a70ed9c4ULL, 0x56a32aa3e857e302ULL, 0xdf3a68bd48a2a5a0ULL, 0x07f650b73176c444ULL,
- 0xe38b9b1626e0ccb1ULL, 0x79e053c18b09fb36ULL, 0x56d90319c9f94964ULL, 0x1ca941e7ac9ff5c4ULL,
- 0x49c4df29162fa0bbULL, 0x8488cf3282b33305ULL, 0x95dfda14cabb437dULL, 0x3391f78264d5ad86ULL,
- 0x729ae06ae2b5095dULL, 0xd58a58d73259a946ULL, 0xe9834262d13921edULL, 0x27fedafaa54bb592ULL,
- 0xa99dc5b829ad48bbULL, 0x5f025742499ee260ULL, 0x802c8ecd5d7513fdULL, 0x78ceb3ef3f6dd938ULL,
- 0xc342f44f8a135d94ULL, 0x7b9edb44828cdda3ULL, 0x9436d11a0537cfe7ULL, 0x5064b164ec1ab4c8ULL,
- 0x7020eccfd37eb2fcULL, 0x1f31ea3ed90d25fcULL, 0x1b930d7bdfa1bb34ULL, 0x5344467a48113044ULL,
- 0x70073170f25e6dfbULL, 0xe385dc1a50114cc8ULL, 0x2348698ac8fc4f00ULL, 0x2a77a55284dd40d8ULL,
- 0xfe06afe0c98c6ce4ULL, 0xc235df96dddfd6e4ULL, 0x1428d01e33bf1ed3ULL, 0x785768ec9300bdafULL,
- 0x9702e57a91deb63bULL, 0x61bdb8bfe5ce8b80ULL, 0x645b426f3d1d58acULL, 0x4804a82227a557bcULL,
- 0x8e57048ab44d2601ULL, 0x68d6501a4b3a6935ULL, 0xc39c9ec3f9e1c293ULL, 0x4172f257d4de63e2ULL,
- 0xd368b450330c6401ULL, 0x040d3017418f2391ULL, 0x2c34bb6090b7d90dULL, 0x16f649228fdfd51fULL,
- 0xbea6818e2b928ef5ULL, 0xe28ccf91cdc11e72ULL, 0x594aaa68e77a36cdULL, 0x313034806c7ffd0fULL,
- 0x8a9d27ac2249bd65ULL, 0x19a3b464018e9512ULL, 0xc26ccff352b37ec7ULL, 0x056f68341d797b21ULL,
- 0x5e79d6757efd2327ULL, 0xfabdbcb6553afe15ULL, 0xd3e7222c6eaf5a60ULL, 0x7046c76d4dae743bULL,
- 0x660be872b18d4a55ULL, 0x19992518574e1496ULL, 0xc103053a302bdcbbULL, 0x3ed8e9800b218e8eULL,
- 0x7b0b9239fa75e03eULL, 0xefe9fb684633c083ULL, 0x98a35fbe391a7793ULL, 0x6065510fe2d0fe34ULL,
- 0x55cb668548abad0cULL, 0xb4584548da87e527ULL, 0x2c43ecea0107c1ddULL, 0x526028809372de35ULL,
- 0x3415c56af9213b1fULL, 0x5bee1a4d017e98dbULL, 0x13f6b105b5cf709bULL, 0x5ff20e3482b29ab6ULL,
- 0x0aa29c75cc2e6c90ULL, 0xfc7d73ca3a70e206ULL, 0x899fc38fc4b5c515ULL, 0x250386b124ffc207ULL,
- 0x54ea28d5ae3d2b56ULL, 0x9913149dd6de60ceULL, 0x16694fc58f06d6c1ULL, 0x46b23975eb018fc7ULL,
- 0x470a6a0fb4b7b4e2ULL, 0x5d92475a8f7253deULL, 0xabeee5b52fbd3adbULL, 0x7fa20801a0806968ULL,
- 0x76f3faf19f7714d2ULL, 0xb3e840c12f4660c3ULL, 0x0fb4cd8df212744eULL, 0x4b065a251d3a2dd2ULL,
- 0x5cebde383d77cd4aULL, 0x6adf39df882c9cb1ULL, 0xa2dd242eb09af759ULL, 0x3147c0e50e5f6422ULL,
- 0x164ca5101d1350dbULL, 0xf8d13479c33fc962ULL, 0xe640ce4d13e5da08ULL, 0x4bdee0c45061f8baULL,
- 0xd7c46dc1a4edb1c9ULL, 0x5514d7b6437fd98aULL, 0x58942f6bb2a1c00bULL, 0x2dffb2ab1d70710eULL,
- 0xccdfcf2fc18b6d68ULL, 0xa8ebcba8b7806167ULL, 0x980697f95e2937e3ULL, 0x02fbba1cd0126e8cULL
-};
-
-static void curve25519_ever64_base(u8 *out, const u8 *priv)
-{
- u64 swap = 1;
- int i, j, k;
- u64 tmp[16 + 32 + 4];
- u64 *x1 = &tmp[0];
- u64 *z1 = &tmp[4];
- u64 *x2 = &tmp[8];
- u64 *z2 = &tmp[12];
- u64 *xz1 = &tmp[0];
- u64 *xz2 = &tmp[8];
- u64 *a = &tmp[0 + 16];
- u64 *b = &tmp[4 + 16];
- u64 *c = &tmp[8 + 16];
- u64 *ab = &tmp[0 + 16];
- u64 *abcd = &tmp[0 + 16];
- u64 *ef = &tmp[16 + 16];
- u64 *efgh = &tmp[16 + 16];
- u64 *key = &tmp[0 + 16 + 32];
-
- memcpy(key, priv, 32);
- ((u8 *)key)[0] &= 248;
- ((u8 *)key)[31] = (((u8 *)key)[31] & 127) | 64;
-
- x1[0] = 1, x1[1] = x1[2] = x1[3] = 0;
- z1[0] = 1, z1[1] = z1[2] = z1[3] = 0;
- z2[0] = 1, z2[1] = z2[2] = z2[3] = 0;
- memcpy(x2, p_minus_s, sizeof(p_minus_s));
-
- j = 3;
- for (i = 0; i < 4; ++i) {
- while (j < (const int[]){ 64, 64, 64, 63 }[i]) {
- u64 bit = (key[i] >> j) & 1;
- k = (64 * i + j - 3);
- swap = swap ^ bit;
- cswap2(swap, xz1, xz2);
- swap = bit;
- fsub(b, x1, z1);
- fadd(a, x1, z1);
- fmul(c, &table_ladder[4 * k], b, ef);
- fsub(b, a, c);
- fadd(a, a, c);
- fsqr2(ab, ab, efgh);
- fmul2(xz1, xz2, ab, efgh);
- ++j;
- }
- j = 0;
- }
-
- point_double(xz1, abcd, efgh);
- point_double(xz1, abcd, efgh);
- point_double(xz1, abcd, efgh);
- encode_point(out, xz1);
-
- memzero_explicit(tmp, sizeof(tmp));
-}
-
-static __ro_after_init DEFINE_STATIC_KEY_FALSE(curve25519_use_bmi2_adx);
-
-void curve25519_arch(u8 mypublic[CURVE25519_KEY_SIZE],
- const u8 secret[CURVE25519_KEY_SIZE],
- const u8 basepoint[CURVE25519_KEY_SIZE])
-{
- if (static_branch_likely(&curve25519_use_bmi2_adx))
- curve25519_ever64(mypublic, secret, basepoint);
- else
- curve25519_generic(mypublic, secret, basepoint);
-}
-EXPORT_SYMBOL(curve25519_arch);
-
-void curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE],
- const u8 secret[CURVE25519_KEY_SIZE])
-{
- if (static_branch_likely(&curve25519_use_bmi2_adx))
- curve25519_ever64_base(pub, secret);
- else
- curve25519_generic(pub, secret, curve25519_base_point);
-}
-EXPORT_SYMBOL(curve25519_base_arch);
-
-static int curve25519_set_secret(struct crypto_kpp *tfm, const void *buf,
- unsigned int len)
-{
- u8 *secret = kpp_tfm_ctx(tfm);
-
- if (!len)
- curve25519_generate_secret(secret);
- else if (len == CURVE25519_KEY_SIZE &&
- crypto_memneq(buf, curve25519_null_point, CURVE25519_KEY_SIZE))
- memcpy(secret, buf, CURVE25519_KEY_SIZE);
- else
- return -EINVAL;
- return 0;
-}
-
-static int curve25519_generate_public_key(struct kpp_request *req)
-{
- struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
- const u8 *secret = kpp_tfm_ctx(tfm);
- u8 buf[CURVE25519_KEY_SIZE];
- int copied, nbytes;
-
- if (req->src)
- return -EINVAL;
-
- curve25519_base_arch(buf, secret);
-
- /* might want less than we've got */
- nbytes = min_t(size_t, CURVE25519_KEY_SIZE, req->dst_len);
- copied = sg_copy_from_buffer(req->dst, sg_nents_for_len(req->dst,
- nbytes),
- buf, nbytes);
- if (copied != nbytes)
- return -EINVAL;
- return 0;
-}
-
-static int curve25519_compute_shared_secret(struct kpp_request *req)
-{
- struct crypto_kpp *tfm = crypto_kpp_reqtfm(req);
- const u8 *secret = kpp_tfm_ctx(tfm);
- u8 public_key[CURVE25519_KEY_SIZE];
- u8 buf[CURVE25519_KEY_SIZE];
- int copied, nbytes;
-
- if (!req->src)
- return -EINVAL;
-
- copied = sg_copy_to_buffer(req->src,
- sg_nents_for_len(req->src,
- CURVE25519_KEY_SIZE),
- public_key, CURVE25519_KEY_SIZE);
- if (copied != CURVE25519_KEY_SIZE)
- return -EINVAL;
-
- curve25519_arch(buf, secret, public_key);
-
- /* might want less than we've got */
- nbytes = min_t(size_t, CURVE25519_KEY_SIZE, req->dst_len);
- copied = sg_copy_from_buffer(req->dst, sg_nents_for_len(req->dst,
- nbytes),
- buf, nbytes);
- if (copied != nbytes)
- return -EINVAL;
- return 0;
-}
-
-static unsigned int curve25519_max_size(struct crypto_kpp *tfm)
-{
- return CURVE25519_KEY_SIZE;
-}
-
-static struct kpp_alg curve25519_alg = {
- .base.cra_name = "curve25519",
- .base.cra_driver_name = "curve25519-x86",
- .base.cra_priority = 200,
- .base.cra_module = THIS_MODULE,
- .base.cra_ctxsize = CURVE25519_KEY_SIZE,
-
- .set_secret = curve25519_set_secret,
- .generate_public_key = curve25519_generate_public_key,
- .compute_shared_secret = curve25519_compute_shared_secret,
- .max_size = curve25519_max_size,
-};
-
-
-static int __init curve25519_mod_init(void)
-{
- if (boot_cpu_has(X86_FEATURE_BMI2) && boot_cpu_has(X86_FEATURE_ADX))
- static_branch_enable(&curve25519_use_bmi2_adx);
- else
- return 0;
- return IS_REACHABLE(CONFIG_CRYPTO_KPP) ?
- crypto_register_kpp(&curve25519_alg) : 0;
-}
-
-static void __exit curve25519_mod_exit(void)
-{
- if (IS_REACHABLE(CONFIG_CRYPTO_KPP) &&
- static_branch_likely(&curve25519_use_bmi2_adx))
- crypto_unregister_kpp(&curve25519_alg);
-}
-
-module_init(curve25519_mod_init);
-module_exit(curve25519_mod_exit);
-
-MODULE_ALIAS_CRYPTO("curve25519");
-MODULE_ALIAS_CRYPTO("curve25519-x86");
-MODULE_DESCRIPTION("Curve25519 algorithm, ADX optimized");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index eebbc8889e70..a835f891164d 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -246,7 +246,7 @@ arch_test_bit_acquire(unsigned long nr, const volatile unsigned long *addr)
variable_test_bit(nr, addr);
}
-static __always_inline unsigned long variable__ffs(unsigned long word)
+static __always_inline __attribute_const__ unsigned long variable__ffs(unsigned long word)
{
asm("tzcnt %1,%0"
: "=r" (word)
@@ -265,7 +265,7 @@ static __always_inline unsigned long variable__ffs(unsigned long word)
(unsigned long)__builtin_ctzl(word) : \
variable__ffs(word))
-static __always_inline unsigned long variable_ffz(unsigned long word)
+static __always_inline __attribute_const__ unsigned long variable_ffz(unsigned long word)
{
return variable__ffs(~word);
}
@@ -287,7 +287,7 @@ static __always_inline unsigned long variable_ffz(unsigned long word)
*
* Undefined if no set bit exists, so code should check against 0 first.
*/
-static __always_inline unsigned long __fls(unsigned long word)
+static __always_inline __attribute_const__ unsigned long __fls(unsigned long word)
{
if (__builtin_constant_p(word))
return BITS_PER_LONG - 1 - __builtin_clzl(word);
@@ -301,7 +301,7 @@ static __always_inline unsigned long __fls(unsigned long word)
#undef ADDR
#ifdef __KERNEL__
-static __always_inline int variable_ffs(int x)
+static __always_inline __attribute_const__ int variable_ffs(int x)
{
int r;
@@ -355,7 +355,7 @@ static __always_inline int variable_ffs(int x)
* set bit if value is nonzero. The last (most significant) bit is
* at position 32.
*/
-static __always_inline int fls(unsigned int x)
+static __always_inline __attribute_const__ int fls(unsigned int x)
{
int r;
@@ -400,7 +400,7 @@ static __always_inline int fls(unsigned int x)
* at position 64.
*/
#ifdef CONFIG_X86_64
-static __always_inline int fls64(__u64 x)
+static __always_inline __attribute_const__ int fls64(__u64 x)
{
int bitpos = -1;
diff --git a/arch/x86/include/asm/cfi.h b/arch/x86/include/asm/cfi.h
index 1751f1eb95ef..976b90a3d190 100644
--- a/arch/x86/include/asm/cfi.h
+++ b/arch/x86/include/asm/cfi.h
@@ -113,7 +113,7 @@ extern bhi_thunk __bhi_args_end[];
struct pt_regs;
-#ifdef CONFIG_CFI_CLANG
+#ifdef CONFIG_CFI
enum bug_trap_type handle_cfi_failure(struct pt_regs *regs);
#define __bpfcall
@@ -157,7 +157,7 @@ static inline int cfi_get_func_arity(void *func)
{
return 0;
}
-#endif /* CONFIG_CFI_CLANG */
+#endif /* CONFIG_CFI */
#if HAS_KERNEL_IBT == 1
#define CFI_NOSEAL(x) asm(IBT_NOSEAL(__stringify(x)))
diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index 85e63d58c074..59f642a94b9d 100644
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -12,9 +12,9 @@
#include <asm/extable.h>
#include <asm/page.h>
+#include <xen/xen.h>
#include <xen/interface/xen.h>
#include <xen/interface/grant_table.h>
-#include <xen/features.h>
/* Xen machine address */
typedef struct xmaddr {
@@ -162,7 +162,7 @@ static inline unsigned long pfn_to_mfn(unsigned long pfn)
* pfn_to_mfn. This will have to be removed when we figured
* out which call.
*/
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return pfn;
mfn = __pfn_to_mfn(pfn);
@@ -175,7 +175,7 @@ static inline unsigned long pfn_to_mfn(unsigned long pfn)
static inline int phys_to_machine_mapping_valid(unsigned long pfn)
{
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return 1;
return __pfn_to_mfn(pfn) != INVALID_P2M_ENTRY;
@@ -210,7 +210,7 @@ static inline unsigned long mfn_to_pfn(unsigned long mfn)
* gfn_to_pfn. This will have to be removed when we figure
* out which call.
*/
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return mfn;
pfn = mfn_to_pfn_no_overrides(mfn);
@@ -242,7 +242,7 @@ static inline xpaddr_t machine_to_phys(xmaddr_t machine)
/* Pseudo-physical <-> Guest conversion */
static inline unsigned long pfn_to_gfn(unsigned long pfn)
{
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return pfn;
else
return pfn_to_mfn(pfn);
@@ -250,7 +250,7 @@ static inline unsigned long pfn_to_gfn(unsigned long pfn)
static inline unsigned long gfn_to_pfn(unsigned long gfn)
{
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return gfn;
else
return mfn_to_pfn(gfn);
@@ -284,7 +284,7 @@ static inline unsigned long bfn_to_local_pfn(unsigned long mfn)
{
unsigned long pfn;
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return mfn;
pfn = mfn_to_pfn(mfn);
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 0d2a6d953be9..bc184dd38d99 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -148,7 +148,7 @@ obj-$(CONFIG_UNWINDER_ORC) += unwind_orc.o
obj-$(CONFIG_UNWINDER_FRAME_POINTER) += unwind_frame.o
obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o
-obj-$(CONFIG_CFI_CLANG) += cfi.o
+obj-$(CONFIG_CFI) += cfi.o
obj-$(CONFIG_CALL_THUNKS) += callthunks.o
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 7bde68247b5f..79ae9cb50019 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -1170,7 +1170,7 @@ void __init_or_module apply_seal_endbr(s32 *start, s32 *end) { }
#ifdef CONFIG_CFI_AUTO_DEFAULT
# define __CFI_DEFAULT CFI_AUTO
-#elif defined(CONFIG_CFI_CLANG)
+#elif defined(CONFIG_CFI)
# define __CFI_DEFAULT CFI_KCFI
#else
# define __CFI_DEFAULT CFI_OFF
@@ -1182,7 +1182,7 @@ enum cfi_mode cfi_mode __ro_after_init = __CFI_DEFAULT;
bool cfi_bhi __ro_after_init = false;
#endif
-#ifdef CONFIG_CFI_CLANG
+#ifdef CONFIG_CFI
u32 cfi_get_func_hash(void *func)
{
u32 hash;
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 6079d15dab8c..3863d7709386 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -339,7 +339,7 @@ static bool can_probe(unsigned long paddr)
if (is_exception_insn(&insn))
return false;
- if (IS_ENABLED(CONFIG_CFI_CLANG)) {
+ if (IS_ENABLED(CONFIG_CFI)) {
/*
* The compiler generates the following instruction sequence
* for indirect call checks and cfi.c decodes this;
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile
index e0a607a14e7e..5ce1d4263000 100644
--- a/arch/x86/purgatory/Makefile
+++ b/arch/x86/purgatory/Makefile
@@ -57,7 +57,7 @@ ifdef CONFIG_MITIGATION_RETPOLINE
PURGATORY_CFLAGS_REMOVE += $(RETPOLINE_CFLAGS)
endif
-ifdef CONFIG_CFI_CLANG
+ifdef CONFIG_CFI
PURGATORY_CFLAGS_REMOVE += $(CC_FLAGS_CFI)
endif
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index 98d8a50d2aed..aa4040fd9215 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -8,6 +8,7 @@ config XEN
depends on PARAVIRT
select PARAVIRT_CLOCK
select X86_HV_CALLBACK_VECTOR
+ select HIBERNATE_CALLBACKS
depends on X86_64 || (X86_32 && X86_PAE)
depends on X86_64 || (X86_GENERIC || MPENTIUM4 || MATOM)
depends on X86_LOCAL_APIC && X86_TSC
@@ -64,12 +65,6 @@ config XEN_PVHVM_GUEST
help
Support running as a Xen PVHVM guest.
-config XEN_SAVE_RESTORE
- bool
- depends on XEN
- select HIBERNATE_CALLBACKS
- default y
-
config XEN_DEBUG_FS
bool "Enable Xen debug and tuning parameters in debugfs"
depends on XEN && DEBUG_FS
diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c
index 26bbaf4b7330..4806cc28d7ca 100644
--- a/arch/x86/xen/enlighten_pv.c
+++ b/arch/x86/xen/enlighten_pv.c
@@ -382,7 +382,6 @@ static bool __init xen_check_xsave(void)
static void __init xen_init_capabilities(void)
{
- setup_force_cpu_cap(X86_FEATURE_XENPV);
setup_clear_cpu_cap(X86_FEATURE_DCA);
setup_clear_cpu_cap(X86_FEATURE_APERFMPERF);
setup_clear_cpu_cap(X86_FEATURE_MTRR);
@@ -1402,6 +1401,7 @@ asmlinkage __visible void __init xen_start_kernel(struct start_info *si)
JMP32_INSN_SIZE);
xen_domain_type = XEN_PV_DOMAIN;
+ setup_force_cpu_cap(X86_FEATURE_XENPV);
xen_start_flags = xen_start_info->flags;
/* Interrupts are guaranteed to be off initially. */
early_boot_irqs_disabled = true;
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index c4c479373249..3be45bf4bc79 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -41,7 +41,7 @@ EXPORT_SYMBOL_GPL(arbitrary_virt_to_machine);
int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
int nr, struct page **pages)
{
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return xen_xlate_unmap_gfn_range(vma, nr, pages);
if (!pages)
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 56914e21e303..2dd12b61a230 100644
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -686,7 +686,7 @@ int set_foreign_p2m_mapping(struct gnttab_map_grant_ref *map_ops,
int i, ret = 0;
pte_t *pte;
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return 0;
if (kmap_ops) {
@@ -769,7 +769,7 @@ int clear_foreign_p2m_mapping(struct gnttab_unmap_grant_ref *unmap_ops,
{
int i, ret = 0;
- if (xen_feature(XENFEAT_auto_translated_physmap))
+ if (!xen_pv_domain())
return 0;
for (i = 0; i < count; i++) {
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-30 16:51:14 +0000