summaryrefslogtreecommitdiff
path: root/arch/um/include
diff options
context:
space:
mode:
Diffstat (limited to 'arch/um/include')
-rw-r--r--arch/um/include/sysdep-i386/stub.h47
-rw-r--r--arch/um/include/sysdep-x86_64/stub.h39
-rw-r--r--arch/um/include/time_user.h1
3 files changed, 87 insertions, 0 deletions
diff --git a/arch/um/include/sysdep-i386/stub.h b/arch/um/include/sysdep-i386/stub.h
index fed9ff1cea52..d3699fe1c613 100644
--- a/arch/um/include/sysdep-i386/stub.h
+++ b/arch/um/include/sysdep-i386/stub.h
@@ -10,9 +10,56 @@
#include <asm/unistd.h>
extern void stub_segv_handler(int sig);
+extern void stub_clone_handler(void);
#define STUB_SYSCALL_RET EAX
#define STUB_MMAP_NR __NR_mmap2
#define MMAP_OFFSET(o) ((o) >> PAGE_SHIFT)
+static inline long stub_syscall2(long syscall, long arg1, long arg2)
+{
+ long ret;
+
+ __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx");
+ __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx");
+ __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax");
+ __asm__("int $0x80;" : : : "%eax");
+ __asm__ __volatile__("movl %%eax, %0; " : "=g" (ret) :);
+ return(ret);
+}
+
+static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
+{
+ __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx");
+ return(stub_syscall2(syscall, arg1, arg2));
+}
+
+static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
+ long arg4)
+{
+ __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi");
+ return(stub_syscall3(syscall, arg1, arg2, arg3));
+}
+
+static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3,
+ long arg4, long arg5, long arg6)
+{
+ long ret;
+ __asm__("movl %0, %%eax; " : : "g" (syscall) : "%eax");
+ __asm__("movl %0, %%ebx; " : : "g" (arg1) : "%ebx");
+ __asm__("movl %0, %%ecx; " : : "g" (arg2) : "%ecx");
+ __asm__("movl %0, %%edx; " : : "g" (arg3) : "%edx");
+ __asm__("movl %0, %%esi; " : : "g" (arg4) : "%esi");
+ __asm__("movl %0, %%edi; " : : "g" (arg5) : "%edi");
+ __asm__ __volatile__("pushl %%ebp ; movl %1, %%ebp; "
+ "int $0x80; popl %%ebp ; "
+ "movl %%eax, %0; " : "=g" (ret) : "g" (arg6) : "%eax");
+ return(ret);
+}
+
+static inline void trap_myself(void)
+{
+ __asm("int3");
+}
+
#endif
diff --git a/arch/um/include/sysdep-x86_64/stub.h b/arch/um/include/sysdep-x86_64/stub.h
index 6b5447ad590d..f599058d8263 100644
--- a/arch/um/include/sysdep-x86_64/stub.h
+++ b/arch/um/include/sysdep-x86_64/stub.h
@@ -11,9 +11,48 @@
#include <sysdep/ptrace_user.h>
extern void stub_segv_handler(int sig);
+extern void stub_clone_handler(void);
#define STUB_SYSCALL_RET PT_INDEX(RAX)
#define STUB_MMAP_NR __NR_mmap
#define MMAP_OFFSET(o) (o)
+static inline long stub_syscall2(long syscall, long arg1, long arg2)
+{
+ long ret;
+
+ __asm__("movq %0, %%rsi; " : : "g" (arg2) : "%rsi");
+ __asm__("movq %0, %%rdi; " : : "g" (arg1) : "%rdi");
+ __asm__("movq %0, %%rax; " : : "g" (syscall) : "%rax");
+ __asm__("syscall;" : : : "%rax", "%r11", "%rcx");
+ __asm__ __volatile__("movq %%rax, %0; " : "=g" (ret) :);
+ return(ret);
+}
+
+static inline long stub_syscall3(long syscall, long arg1, long arg2, long arg3)
+{
+ __asm__("movq %0, %%rdx; " : : "g" (arg3) : "%rdx");
+ return(stub_syscall2(syscall, arg1, arg2));
+}
+
+static inline long stub_syscall4(long syscall, long arg1, long arg2, long arg3,
+ long arg4)
+{
+ __asm__("movq %0, %%r10; " : : "g" (arg4) : "%r10");
+ return(stub_syscall3(syscall, arg1, arg2, arg3));
+}
+
+static inline long stub_syscall6(long syscall, long arg1, long arg2, long arg3,
+ long arg4, long arg5, long arg6)
+{
+ __asm__("movq %0, %%r9; " : : "g" (arg6) : "%r9");
+ __asm__("movq %0, %%r8; " : : "g" (arg5) : "%r8");
+ return(stub_syscall4(syscall, arg1, arg2, arg3, arg4));
+}
+
+static inline void trap_myself(void)
+{
+ __asm("int3");
+}
+
#endif
diff --git a/arch/um/include/time_user.h b/arch/um/include/time_user.h
index f64ef77019a3..17d7ef2141f4 100644
--- a/arch/um/include/time_user.h
+++ b/arch/um/include/time_user.h
@@ -10,6 +10,7 @@ extern void timer(void);
extern void switch_timers(int to_real);
extern void idle_sleep(int secs);
extern void enable_timer(void);
+extern void prepare_timer(void * ptr);
extern void disable_timer(void);
extern unsigned long time_lock(void);
extern void time_unlock(unsigned long);