1 files changed, 0 insertions, 117 deletions
diff --git a/na/arch/riscv/uaccess/uaccess_memcpy.S b/na/arch/riscv/uaccess/uaccess_memcpy.S
deleted file mode 100644
index 615680d..0000000
--- a/na/arch/riscv/uaccess/uaccess_memcpy.S
+++ /dev/null
@@ -1,117 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/* Copyright (C) 2026 Richard Qin */
-
-#include <arch/extable.h>
-
-/*
- * extern "C" int __uaccess_memcpy(void* dst, const void* src, uint64 len);
- *
- * a0: dst
- * a1: src
- * a2: len
- * Returns: 0 on success, -EFAULT (-14) on page fault.
- */
-.global __uaccess_memcpy
-.type __uaccess_memcpy, @function
-__uaccess_memcpy:
-    /* If len == 0, return 0 */
-    beqz a2, .Lmemcpy_done
-
-    /* Enable SUM (Supervisor User Memory) bit: sstatus.SUM is bit 18 */
-    li t0, (1 << 18)
-    csrs sstatus, t0
-
-.Lmemcpy_loop:
-    /* Load byte from src */
-1:  lb t1, 0(a1)
-    /* Store byte to dst */
-2:  sb t1, 0(a0)
-
-    addi a0, a0, 1
-    addi a1, a1, 1
-    addi a2, a2, -1
-    bnez a2, .Lmemcpy_loop
-
-.Lmemcpy_done:
-    /* Disable SUM */
-    li t0, (1 << 18)
-    csrc sstatus, t0
-    li a0, 0
-    ret
-
-.Lmemcpy_fault:
-    /* Fixup routine on fault */
-    /* Disable SUM */
-    li t0, (1 << 18)
-    csrc sstatus, t0
-    li a0, -14 /* -EFAULT */
-    ret
-
-/* Exception table entries */
-EXTABLE(1b, .Lmemcpy_fault)
-EXTABLE(2b, .Lmemcpy_fault)
-
-
-/*
- * extern "C" int64 __uaccess_strncpy(char* dst, const char* src, uint64 max_len);
- *
- * a0: dst
- * a1: src
- * a2: max_len
- * Returns: number of bytes copied (excluding null), or -EFAULT (-14) on page fault.
- */
-.global __uaccess_strncpy
-.type __uaccess_strncpy, @function
-__uaccess_strncpy:
-    /* If max_len == 0, return 0 */
-    beqz a2, .Lstrncpy_done_zero
-
-    /* Enable SUM */
-    li t0, (1 << 18)
-    csrs sstatus, t0
-
-    /* t2 will store the length copied */
-    li t2, 0
-
-.Lstrncpy_loop:
-    /* Load byte from src */
-3:  lb t1, 0(a1)
-    /* Store byte to dst */
-4:  sb t1, 0(a0)
-
-    /* If it was the null terminator, we're done */
-    beqz t1, .Lstrncpy_done
-
-    addi a0, a0, 1
-    addi a1, a1, 1
-    addi t2, t2, 1
-    addi a2, a2, -1
-    bnez a2, .Lstrncpy_loop
-
-    /* Reached max_len without finding null */
-    /* We must null-terminate at max_len - 1 as per typical strncpy_from_user semantics */
-    addi a0, a0, -1
-    sb zero, 0(a0)
-    addi t2, t2, -1 /* length of string without the forced null terminator */
-
-.Lstrncpy_done:
-    /* Disable SUM */
-    li t0, (1 << 18)
-    csrc sstatus, t0
-    mv a0, t2
-    ret
-
-.Lstrncpy_done_zero:
-    li a0, 0
-    ret
-
-.Lstrncpy_fault:
-    /* Fixup routine on fault */
-    li t0, (1 << 18)
-    csrc sstatus, t0
-    li a0, -14 /* -EFAULT */
-    ret
-
-/* Exception table entries */
-EXTABLE(3b, .Lstrncpy_fault)
-EXTABLE(4b, .Lstrncpy_fault)