From: "Emilio G. Cota" <c...@braap.org>
To avoid too much duplication add a wrapper that the existing trace
and the new plugin calls can live in. We could move the -strace code
here as well but that is left for a future series as the code is
subtly different between the bsd and linux.
Signed-off-by: Emilio G. Cota <c...@braap.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
[AJB: wrap in syscall-trace.h, expand commit msg]
Signed-off-by: Alex Bennée <alex.ben...@linaro.org>
diff --git a/bsd-user/syscall.c b/bsd-user/syscall.c
index 84a983a9a12..0d45b654bb3 100644
--- a/bsd-user/syscall.c
+++ b/bsd-user/syscall.c
@@ -26,6 +26,7 @@
#include "qemu.h"
#include "qemu-common.h"
+#include "user/syscall-trace.h"
//#define DEBUG
@@ -322,7 +323,8 @@ abi_long do_freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
#ifdef DEBUG
gemu_log("freebsd syscall %d\n", num);
#endif
- trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6,
arg7, arg8);
+ record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
if(do_strace)
print_freebsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
@@ -403,7 +405,8 @@ abi_long do_freebsd_syscall(void *cpu_env, int num,
abi_long arg1,
#endif
if (do_strace)
print_freebsd_syscall_ret(num, ret);
- trace_guest_user_syscall_ret(cpu, num, ret);
+
+ record_syscall_return(cpu, num, ret);
return ret;
efault:
ret = -TARGET_EFAULT;
@@ -421,7 +424,9 @@ abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long
arg1,
#ifdef DEBUG
gemu_log("netbsd syscall %d\n", num);
#endif
- trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0,
0);
+
+ record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
if(do_strace)
print_netbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
@@ -479,7 +484,8 @@ abi_long do_netbsd_syscall(void *cpu_env, int num, abi_long
arg1,
#endif
if (do_strace)
print_netbsd_syscall_ret(num, ret);
- trace_guest_user_syscall_ret(cpu, num, ret);
+
+ record_syscall_return(cpu, num, ret);
return ret;
efault:
ret = -TARGET_EFAULT;
@@ -497,7 +503,9 @@ abi_long do_openbsd_syscall(void *cpu_env, int num,
abi_long arg1,
#ifdef DEBUG
gemu_log("openbsd syscall %d\n", num);
#endif
- trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0,
0);
+
+ record_syscall_start(cpu, num, arg1, arg2, arg3, arg4, arg5, arg6, 0, 0);
+
if(do_strace)
print_openbsd_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
@@ -555,7 +563,8 @@ abi_long do_openbsd_syscall(void *cpu_env, int num,
abi_long arg1,
#endif
if (do_strace)
print_openbsd_syscall_ret(num, ret);
- trace_guest_user_syscall_ret(cpu, num, ret);
+
+ record_syscall_return(cpu, num, ret);
return ret;
efault:
ret = -TARGET_EFAULT;
diff --git a/include/user/syscall-trace.h b/include/user/syscall-trace.h
new file mode 100644
index 00000000000..9e604736433
--- /dev/null
+++ b/include/user/syscall-trace.h
@@ -0,0 +1,40 @@
+/*
+ * Common System Call Tracing Wrappers for *-user
+ *
+ * Copyright (c) 2019 Linaro
+ * Written by Alex Bennée <alex.ben...@linaro.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef _SYSCALL_TRACE_H_
+#define _SYSCALL_TRACE_H_
+
+/*
+ * These helpers just provide a common place for the various
+ * subsystems that want to track syscalls to put their hooks in. We
+ * could potentially unify the -strace code here as well.
+ */
+
+static inline void record_syscall_start(void *cpu, int num,
+ abi_long arg1, abi_long arg2,
+ abi_long arg3, abi_long arg4,
+ abi_long arg5, abi_long arg6,
+ abi_long arg7, abi_long arg8)
+{
+ trace_guest_user_syscall(cpu, num,
+ arg1, arg2, arg3, arg4,
+ arg5, arg6, arg7, arg8);
+ qemu_plugin_vcpu_syscall(cpu, num,
+ arg1, arg2, arg3, arg4,
+ arg5, arg6, arg7, arg8);
+}
+
+static inline void record_syscall_return(void *cpu, int num, abi_long ret)
+{
+ trace_guest_user_syscall_ret(cpu, num, ret);
+ qemu_plugin_vcpu_syscall_ret(cpu, num, ret);
+}
+
+
+#endif /* _SYSCALL_TRACE_H_ */
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index f1ab81b9177..be2a3b93b3a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -112,6 +112,7 @@
#include "qemu.h"
#include "qemu/guest-random.h"
+#include "user/syscall-trace.h"
#include "qapi/error.h"
#include "fd-trans.h"
@@ -11983,8 +11984,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
}
#endif
- trace_guest_user_syscall(cpu, num, arg1, arg2, arg3, arg4,
- arg5, arg6, arg7, arg8);
+ record_syscall_start(cpu, num, arg1,
+ arg2, arg3, arg4, arg5, arg6, arg7, arg8);
if (unlikely(do_strace)) {
print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6);
@@ -11996,6 +11997,6 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
arg5, arg6, arg7, arg8);
}
- trace_guest_user_syscall_ret(cpu, num, ret);
+ record_syscall_return(cpu, num, ret);
return ret;
}
--
2.20.1
