1 files changed, 86 insertions, 0 deletions
diff --git a/arch/um/sys-x86/user-offsets.c b/arch/um/sys-x86/user-offsets.c
new file mode 100644
index 00000000000..718f0c0f0b0
--- /dev/null
+++ b/arch/um/sys-x86/user-offsets.c
@@ -0,0 +1,86 @@
+#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)))
+
+#define OFFSET(sym, str, mem) \
+	DEFINE(sym, offsetof(struct str, mem));
+
+void foo(void)
+{
+	OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
+	OFFSET(HOST_SC_ERR, sigcontext, err);
+	OFFSET(HOST_SC_CR2, sigcontext, cr2);
+
+#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_EAX, EAX);
+	DEFINE(HOST_EBX, EBX);
+	DEFINE(HOST_ECX, ECX);
+	DEFINE(HOST_EDX, EDX);
+	DEFINE(HOST_ESI, ESI);
+	DEFINE(HOST_EDI, EDI);
+	DEFINE(HOST_EBP, 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);
+#else
+	DEFINE(HOST_FP_SIZE, sizeof(struct _fpstate) / sizeof(unsigned long));
+	DEFINE_LONGS(HOST_RBX, RBX);
+	DEFINE_LONGS(HOST_RCX, RCX);
+	DEFINE_LONGS(HOST_RDI, RDI);
+	DEFINE_LONGS(HOST_RSI, RSI);
+	DEFINE_LONGS(HOST_RDX, RDX);
+	DEFINE_LONGS(HOST_RBP, RBP);
+	DEFINE_LONGS(HOST_RAX, 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_RAX, 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);
+}