1 files changed, 80 insertions, 0 deletions

diff --git a/arch/x86/um/user-offsets.c b/arch/x86/um/user-offsets.c
new file mode 100644
index 000000000000..ca49be8ddd0c
--- /dev/null
+++ b/arch/x86/um/user-offsets.c
@@ -0,0 +1,80 @@
+#include <stdio.h>
+#include <stddef.h>
+#include <signal.h>
+#include <sys/poll.h>
+#include <sys/mman.h>
+#include <sys/user.h>
+#define __FRAME_OFFSETS
+#include <asm/ptrace.h>
+#include <asm/types.h>
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define DEFINE_LONGS(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
+
+void foo(void)
+{
+#ifdef __i386__
+        DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
+        DEFINE_LONGS(HOST_FPX_SIZE, sizeof(struct user_fpxregs_struct));
+
+        DEFINE(HOST_IP, EIP);
+        DEFINE(HOST_SP, UESP);
+        DEFINE(HOST_EFLAGS, EFL);
+        DEFINE(HOST_AX, EAX);
+        DEFINE(HOST_BX, EBX);
+        DEFINE(HOST_CX, ECX);
+        DEFINE(HOST_DX, EDX);
+        DEFINE(HOST_SI, ESI);
+        DEFINE(HOST_DI, EDI);
+        DEFINE(HOST_BP, EBP);
+        DEFINE(HOST_CS, CS);
+        DEFINE(HOST_SS, SS);
+        DEFINE(HOST_DS, DS);
+        DEFINE(HOST_FS, FS);
+        DEFINE(HOST_ES, ES);
+        DEFINE(HOST_GS, GS);
+        DEFINE(HOST_ORIG_AX, ORIG_EAX);
+#else
+        DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
+        DEFINE_LONGS(HOST_BX, RBX);
+        DEFINE_LONGS(HOST_CX, RCX);
+        DEFINE_LONGS(HOST_DI, RDI);
+        DEFINE_LONGS(HOST_SI, RSI);
+        DEFINE_LONGS(HOST_DX, RDX);
+        DEFINE_LONGS(HOST_BP, RBP);
+        DEFINE_LONGS(HOST_AX, RAX);
+        DEFINE_LONGS(HOST_R8, R8);
+        DEFINE_LONGS(HOST_R9, R9);
+        DEFINE_LONGS(HOST_R10, R10);
+        DEFINE_LONGS(HOST_R11, R11);
+        DEFINE_LONGS(HOST_R12, R12);
+        DEFINE_LONGS(HOST_R13, R13);
+        DEFINE_LONGS(HOST_R14, R14);
+        DEFINE_LONGS(HOST_R15, R15);
+        DEFINE_LONGS(HOST_ORIG_AX, ORIG_RAX);
+        DEFINE_LONGS(HOST_CS, CS);
+        DEFINE_LONGS(HOST_SS, SS);
+        DEFINE_LONGS(HOST_EFLAGS, EFLAGS);
+#if 0
+        DEFINE_LONGS(HOST_FS, FS);
+        DEFINE_LONGS(HOST_GS, GS);
+        DEFINE_LONGS(HOST_DS, DS);
+        DEFINE_LONGS(HOST_ES, ES);
+#endif
+
+        DEFINE_LONGS(HOST_IP, RIP);
+        DEFINE_LONGS(HOST_SP, RSP);
+#endif
+
+        DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
+        DEFINE(UM_POLLIN, POLLIN);
+        DEFINE(UM_POLLPRI, POLLPRI);
+        DEFINE(UM_POLLOUT, POLLOUT);
+
+        DEFINE(UM_PROT_READ, PROT_READ);
+        DEFINE(UM_PROT_WRITE, PROT_WRITE);
+        DEFINE(UM_PROT_EXEC, PROT_EXEC);
+}