added extern cmd syscall patch

From dc462223c52f97e94464eb597e1af9ab961aa781 Mon Sep 17 00:00:00 2001

From: sktzwhj <whj_nudt@foxmail.com>

Date: Thu, 24 Feb 2022 17:34:40 +0800

Subject: [PATCH] changes for gekkofs

---

 CMakeLists.txt                                | 16 +++---

 .../include/libsyscall_intercept_hook_point.h | 17 ++++++-

 arch/aarch64/src/intercept.c                  | 50 ++++++++++++++++---

 3 files changed, 65 insertions(+), 18 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt

index 13fcdb9..11b621a 100644

--- a/CMakeLists.txt

 	}

 	return (struct wrapper_ret){.x0 = context->x0, .x1 = 1 };

-- 

2.17.1

diff --git a/arch/aarch64/src/intercept.h b/arch/aarch64/src/intercept.h

index be593a5..7408f10 100644

--- a/arch/aarch64/src/intercept.h

+++ b/arch/aarch64/src/intercept.h

@@ -202,6 +202,6 @@ bool is_overwritable_nop(const struct intercept_disasm_result *ins);

 unsigned char *create_jump(unsigned char *from, void *to);

-const char *cmdline;

+extern const char *cmdline;

 extern size_t page_size;

 #endif

diff --git a/src/intercept.h b/src/intercept.h

index 3c40795..d04629c 100644

--- a/src/intercept.h

+++ b/src/intercept.h

@@ -229,6 +229,6 @@ bool is_overwritable_nop(const struct intercept_disasm_result *ins);

 void create_jump(unsigned char opcode, unsigned char *from, void *to);

-const char *cmdline;

+extern const char *cmdline;

 #endif