1 files changed, 54 insertions, 0 deletions
diff --git a/toj/center/src/judgk_syscall_asm.S b/toj/center/src/judgk_syscall_asm.S
new file mode 100755
index 0000000..dfc5bc6
--- /dev/null
+++ b/toj/center/src/judgk_syscall_asm.S
@@ -0,0 +1,54 @@
+.code64
+.section .data
+.section .text
+.global hook_sys_block
+.type hook_sys_block,@function
+
+hook_sys_block:
+    push %rax
+    push %rbx
+    push %rcx
+    push %rdx
+    push %rsi
+    push %rdi
+    push %rbp
+    push %r8
+    push %r9
+    push %r10
+    push %r11
+    push %r12
+    push %r13
+    push %r14
+    push %r15
+
+    call judgk_syscall_check
+    test %eax,%eax
+    
+    pop %r15
+    pop %r14
+    pop %r13
+    pop %r12
+    pop %r11
+    pop %r10
+    pop %r9
+    pop %r8
+    pop %rbp
+    pop %rdi
+    pop %rsi
+    pop %rdx
+    pop %rcx
+    pop %rbx
+    pop %rax
+
+    jnz block
+    
+    push %rdx
+    mov $8,%rdx
+    mul %rdx
+    pop %rdx
+    add judgk_syscall_ori_table,%rax
+    jmp *(%rax)
+block:
+    call judgk_syscall_block
+    mov $-1,%rax
+    ret