suppressed tgetx and tputx (initial patch by Thayne Harbaugh)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3653 c046a42c-6fe2-441c-8c8c-71466251a162

suppressed tgetx and tputx (initial patch by Thayne Harbaugh)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3653 c046a42c-6fe2-441c-8c8c-71466251a162
bellard
1 parent 67276f53
Showing 10 changed files with 473 additions and 248 deletions
arm-semi.c
linux-user/elfload.c
linux-user/flatload.c
linux-user/linuxload.c
linux-user/main.c
linux-user/qemu.h
linux-user/syscall.c
m68k-semi.c
softmmu-semi.h
target-arm/nwfpe/fpa11_cpdt.c
@@ -165,8 +165,14 @@ static void arm_semi_flen_cb(CPUState *env, target_ulong ret, target_ulong err)
 #endif
 }
-#define ARG(n) tget32(args + (n) * 4)
-#define SET_ARG(n, val) tput32(args + (n) * 4,val)
+#define ARG(n)					\
+({						\
+    target_ulong __arg;				\
+    /* FIXME - handle get_user() failure */	\
+    get_user_ual(__arg, args + (n) * 4);	\
+    __arg;					\
+})
+#define SET_ARG(n, val) put_user_ual(val, args + (n) * 4)
 uint32_t do_arm_semihosting(CPUState *env)
 {
     target_ulong args;
@@ -213,7 +219,11 @@ uint32_t do_arm_semihosting(CPUState *env)
         }
     case SYS_WRITEC:
         {
-          char c = tget8(args);
+          char c;
+
+          if (get_user_u8(c, args))
+              /* FIXME - should this error code be -TARGET_EFAULT ? */
+              return (uint32_t)-1;
           /* Write to debug console.  stderr is near enough.  */
           if (use_gdb_syscalls()) {
                 gdb_do_syscall(arm_semi_cb, "write,2,%x,1", args);
@@ -179,8 +179,9 @@ static inline void init_thread(struct target_pt_regs *regs, struct image_info *i
       regs->ARM_cpsr |= CPSR_T;
     regs->ARM_pc = infop->entry & 0xfffffffe;
     regs->ARM_sp = infop->start_stack;
-    regs->ARM_r2 = tgetl(stack + 8); /* envp */
-    regs->ARM_r1 = tgetl(stack + 4); /* envp */
+    /* FIXME - what to for failure of get_user()? */
+    get_user_ual(regs->ARM_r2, stack + 8); /* envp */
+    get_user_ual(regs->ARM_r1, stack + 4); /* envp */
     /* XXX: it seems that r0 is zeroed after ! */
     regs->ARM_r0 = 0;
     /* For uClinux PIC binaries.  */
@@ -341,7 +342,8 @@ static inline void init_thread(struct target_pt_regs *_regs, struct image_info *
      * but this is what the ABI wants and is needed to allow
      * execution of PPC BSD programs.
      */
-    _regs->gpr[3] = tgetl(pos);
+    /* FIXME - what to for failure of get_user()? */
+    get_user_ual(_regs->gpr[3], pos);
     pos += sizeof(abi_ulong);
     _regs->gpr[4] = pos;
     for (tmp = 1; tmp != 0; pos += sizeof(abi_ulong))
@@ -733,7 +735,8 @@ static void padzero(abi_ulong elf_bss, abi_ulong last_bss)
         if (nbyte) {
 	    nbyte = qemu_host_page_size - nbyte;
 	    do {
-		tput8(elf_bss, 0);
+                /* FIXME - what to do if put_user() fails? */
+		put_user_u8(0, elf_bss);
                 elf_bss++;
 	    } while (--nbyte);
         }
@@ -782,17 +785,11 @@ static abi_ulong create_elf_tables(abi_ulong p, int argc, int envc,
         /* This is correct because Linux defines
          * elf_addr_t as Elf32_Off / Elf64_Off
          */
-#if ELF_CLASS == ELFCLASS32
-#define NEW_AUX_ENT(id, val) do { \
-            sp -= n; tput32(sp, val); \
-            sp -= n; tput32(sp, id); \
+#define NEW_AUX_ENT(id, val) do {		\
+            sp -= n; put_user_ual(val, sp);	\
+            sp -= n; put_user_ual(id, sp);	\
           } while(0)
-#else
-#define NEW_AUX_ENT(id, val) do { \
-            sp -= n; tput64(sp, val); \
-            sp -= n; tput64(sp, id); \
-          } while(0)
-#endif
+
         NEW_AUX_ENT (AT_NULL, 0);
         /* There must be exactly DLINFO_ITEMS entries here.  */
@@ -598,14 +598,16 @@ static int load_flat_file(struct linux_binprm * bprm,
         rp = datapos;
         while (1) {
             abi_ulong addr;
-            addr = tgetl(rp);
+            if (get_user_ual(addr, rp))
+                return -EFAULT;
             if (addr == -1)
                 break;
             if (addr) {
                 addr = calc_reloc(addr, libinfo, id, 0);
                 if (addr == RELOC_FAILED)
                     return -ENOEXEC;
-                tputl(rp, addr);
+                if (put_user_ual(addr, rp))
+                    return -EFAULT;
             }
             rp += sizeof(abi_ulong);
         }
@@ -629,14 +631,16 @@ static int load_flat_file(struct linux_binprm * bprm,
             /* Get the address of the pointer to be
                relocated (of course, the address has to be
                relocated first).  */
-            relval = tgetl(reloc + i * sizeof (abi_ulong));
+            if (get_user_ual(relval, reloc + i * sizeof(abi_ulong)))
+                return -EFAULT;
             addr = flat_get_relocate_addr(relval);
             rp = calc_reloc(addr, libinfo, id, 1);
             if (rp == RELOC_FAILED)
                 return -ENOEXEC;
             /* Get the pointer's value.  */
-            addr = tgetl(rp);
+            if (get_user_ual(addr, rp))
+                return -EFAULT;
             if (addr != 0) {
                 /*
                  * Do the relocation.  PIC relocs in the data section are
@@ -652,13 +656,15 @@ static int load_flat_file(struct linux_binprm * bprm,
                     return -ENOEXEC;
                 /* Write back the relocated pointer.  */
-                tputl(rp, addr);
+                if (put_user_ual(addr, rp))
+                    return -EFAULT;
             }
         }
     } else {
         for (i = 0; i < relocs; i++) {
             abi_ulong relval;
-            relval = tgetl(reloc + i * sizeof (abi_ulong));
+            if (get_user_ual(relval, reloc + i * sizeof(abi_ulong)))
+                return -EFAULT;
             old_reloc(&libinfo[0], relval);
         }
     }
@@ -744,9 +750,12 @@ int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
             p = libinfo[i].start_data;
             for (j=0; j<MAX_SHARED_LIBS; j++) {
                 p -= 4;
-                tput32(p, libinfo[j].loaded
-                          ? libinfo[j].start_data
-                          : UNLOADED_LIB);
+                /* FIXME - handle put_user() failures */
+                if (put_user_ual(libinfo[j].loaded
+                                 ? libinfo[j].start_data
+                                 : UNLOADED_LIB,
+                                 p))
+                    return -EFAULT;
             }
         }
     }
@@ -779,7 +788,9 @@ int load_flt_binary(struct linux_binprm * bprm, struct target_pt_regs * regs,
     for (i = MAX_SHARED_LIBS-1; i>0; i--) {
             if (libinfo[i].loaded) {
                     /* Push previos first to call address */
-                    --sp;	put_user(start_addr, sp);
+                    --sp;
+                    if (put_user_ual(start_addr, sp))
+                        return -EFAULT;
                     start_addr = libinfo[i].entry;
             }
     }
@@ -124,21 +124,32 @@ abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
     sp -= (argc + 1) * n;
     argv = sp;
     if (push_ptr) {
-        sp -= n; tputl(sp, envp);
-        sp -= n; tputl(sp, argv);
+        /* FIXME - handle put_user() failures */
+        sp -= n;
+        put_user_ual(envp, sp);
+        sp -= n;
+        put_user_ual(argv, sp);
     }
-    sp -= n; tputl(sp, argc);
+    sp -= n;
+    /* FIXME - handle put_user() failures */
+    put_user_ual(argc, sp);
     while (argc-- > 0) {
-        tputl(argv, stringp); argv += n;
+        /* FIXME - handle put_user() failures */
+        put_user_ual(stringp, argv);
+        argv += n;
         stringp += target_strlen(stringp) + 1;
     }
-    tputl(argv, 0);
+    /* FIXME - handle put_user() failures */
+    put_user_ual(0, argv);
     while (envc-- > 0) {
-        tputl(envp, stringp); envp += n;
+        /* FIXME - handle put_user() failures */
+        put_user_ual(stringp, envp);
+        envp += n;
         stringp += target_strlen(stringp) + 1;
     }
-    tputl(envp, 0);
+    /* FIXME - handle put_user() failures */
+    put_user_ual(0, envp);
     return sp;
 }
@@ -380,7 +380,8 @@ void cpu_loop(CPUARMState *env)
                 /* we handle the FPU emulation here, as Linux */
                 /* we get the opcode */
-                opcode = tget32(env->regs[15]);
+                /* FIXME - what to do if get_user() fails? */
+                get_user_u32(opcode, env->regs[15]);
                 if (EmulateAll(opcode, &ts->fpa, env) == 0) {
                     info.si_signo = SIGILL;
@@ -401,20 +402,24 @@ void cpu_loop(CPUARMState *env)
                 /* system call */
                 if (trapnr == EXCP_BKPT) {
                     if (env->thumb) {
-                        insn = tget16(env->regs[15]);
+                        /* FIXME - what to do if get_user() fails? */
+                        get_user_u16(insn, env->regs[15]);
                         n = insn & 0xff;
                         env->regs[15] += 2;
                     } else {
-                        insn = tget32(env->regs[15]);
+                        /* FIXME - what to do if get_user() fails? */
+                        get_user_u32(insn, env->regs[15]);
                         n = (insn & 0xf) | ((insn >> 4) & 0xff0);
                         env->regs[15] += 4;
                     }
                 } else {
                     if (env->thumb) {
-                        insn = tget16(env->regs[15] - 2);
+                        /* FIXME - what to do if get_user() fails? */
+                        get_user_u16(insn, env->regs[15] - 2);
                         n = insn & 0xff;
                     } else {
-                        insn = tget32(env->regs[15] - 4);
+                        /* FIXME - what to do if get_user() fails? */
+                        get_user_u32(insn, env->regs[15] - 4);
                         n = insn & 0xffffff;
                     }
                 }
@@ -520,7 +525,8 @@ static inline void save_window_offset(CPUSPARCState *env, int cwp1)
            (int)sp_ptr, cwp1);
 #endif
     for(i = 0; i < 16; i++) {
-        tputl(sp_ptr, env->regbase[get_reg_index(env, cwp1, 8 + i)]);
+        /* FIXME - what to do if put_user() fails? */
+        put_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
         sp_ptr += sizeof(abi_ulong);
     }
 }
@@ -556,7 +562,8 @@ static void restore_window(CPUSPARCState *env)
            (int)sp_ptr, cwp1);
 #endif
     for(i = 0; i < 16; i++) {
-        env->regbase[get_reg_index(env, cwp1, 8 + i)] = tgetl(sp_ptr);
+        /* FIXME - what to do if get_user() fails? */
+        get_user_ual(env->regbase[get_reg_index(env, cwp1, 8 + i)], sp_ptr);
         sp_ptr += sizeof(abi_ulong);
     }
     env->wim = new_wim;
@@ -1533,10 +1540,11 @@ void cpu_loop(CPUMIPSState *env)
                 sp_reg = env->gpr[29][env->current_tc];
                 switch (nb_args) {
                 /* these arguments are taken from the stack */
-                case 8: arg8 = tgetl(sp_reg + 28);
-                case 7: arg7 = tgetl(sp_reg + 24);
-                case 6: arg6 = tgetl(sp_reg + 20);
-                case 5: arg5 = tgetl(sp_reg + 16);
+                /* FIXME - what to do if get_user() fails? */
+                case 8: get_user_ual(arg8, sp_reg + 28);
+                case 7: get_user_ual(arg7, sp_reg + 24);
+                case 6: get_user_ual(arg6, sp_reg + 20);
+                case 5: get_user_ual(arg5, sp_reg + 16);
                 default:
                     break;
                 }
@@ -226,7 +226,7 @@ static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
     int size = sizeof(*hptr);\
     switch(size) {\
     case 1:\
-        *(uint8_t *)(hptr) = (typeof(*hptr))(x);\
+        *(uint8_t *)(hptr) = (uint8_t)(typeof(*hptr))(x);\
         break;\
     case 2:\
         *(uint16_t *)(hptr) = tswap16((typeof(*hptr))(x));\
@@ -260,6 +260,8 @@ static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
         x = (typeof(*hptr))tswap64(*(uint64_t *)(hptr));\
         break;\
     default:\
+        /* avoid warning */\
+        x = 0;\
         abort();\
     }\
     0;\
@@ -291,11 +293,36 @@ static inline int access_ok(int type, abi_ulong addr, abi_ulong size)
     if ((__hptr = lock_user(VERIFY_READ, __gaddr, sizeof(target_type), 1))) { \
         __ret = __get_user((x), __hptr);				\
         unlock_user(__hptr, __gaddr, 0);				\
-    } else								\
+    } else {								\
+        /* avoid warning */						\
+        (x) = 0;							\
         __ret = -TARGET_EFAULT;						\
+    }									\
     __ret;								\
 })
+#define put_user_ual(x, gaddr) put_user((x), (gaddr), abi_ulong)
+#define put_user_sal(x, gaddr) put_user((x), (gaddr), abi_long)
+#define put_user_u64(x, gaddr) put_user((x), (gaddr), uint64_t)
+#define put_user_s64(x, gaddr) put_user((x), (gaddr), int64_t)
+#define put_user_u32(x, gaddr) put_user((x), (gaddr), uint32_t)
+#define put_user_s32(x, gaddr) put_user((x), (gaddr), int32_t)
+#define put_user_u16(x, gaddr) put_user((x), (gaddr), uint16_t)
+#define put_user_s16(x, gaddr) put_user((x), (gaddr), int16_t)
+#define put_user_u8(x, gaddr)  put_user((x), (gaddr), uint8_t)
+#define put_user_s8(x, gaddr)  put_user((x), (gaddr), int8_t)
+
+#define get_user_ual(x, gaddr) get_user((x), (gaddr), abi_ulong)
+#define get_user_sal(x, gaddr) get_user((x), (gaddr), abi_long)
+#define get_user_u64(x, gaddr) get_user((x), (gaddr), uint64_t)
+#define get_user_s64(x, gaddr) get_user((x), (gaddr), int64_t)
+#define get_user_u32(x, gaddr) get_user((x), (gaddr), uint32_t)
+#define get_user_s32(x, gaddr) get_user((x), (gaddr), int32_t)
+#define get_user_u16(x, gaddr) get_user((x), (gaddr), uint16_t)
+#define get_user_s16(x, gaddr) get_user((x), (gaddr), int16_t)
+#define get_user_u8(x, gaddr)  get_user((x), (gaddr), uint8_t)
+#define get_user_s8(x, gaddr)  get_user((x), (gaddr), int8_t)
+
 /* copy_from_user() and copy_to_user() are usually used to copy data
  * buffers between the target and host.  These internally perform
  * locking/unlocking of the memory.
@@ -368,20 +395,4 @@ static inline void *lock_user_string(abi_ulong guest_addr)
 #define unlock_user_struct(host_ptr, guest_addr, copy)		\
     unlock_user(host_ptr, guest_addr, (copy) ? sizeof(*host_ptr) : 0)
-#define tget8(addr) ldub(addr)
-#define tput8(addr, val) stb(addr, val)
-#define tget16(addr) lduw(addr)
-#define tput16(addr, val) stw(addr, val)
-#define tget32(addr) ldl(addr)
-#define tput32(addr, val) stl(addr, val)
-#define tget64(addr) ldq(addr)
-#define tput64(addr, val) stq(addr, val)
-#if TARGET_ABI_BITS == 64
-#define tgetl(addr) ldq(addr)
-#define tputl(addr, val) stq(addr, val)
-#else
-#define tgetl(addr) ldl(addr)
-#define tputl(addr, val) stl(addr, val)
-#endif
-
 #endif /* QEMU_H */
@@ -783,7 +783,7 @@ static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh,
 /* do_setsockopt() Must return target values and target errnos. */
 static abi_long do_setsockopt(int sockfd, int level, int optname,
-                              abi_ulong optval, socklen_t optlen)
+                              abi_ulong optval_addr, socklen_t optlen)
 {
     abi_long ret;
     int val;
@@ -794,7 +794,8 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
         if (optlen < sizeof(uint32_t))
             return -TARGET_EINVAL;
-        val = tget32(optval);
+        if (get_user_u32(val, optval_addr))
+            return -TARGET_EFAULT;
         ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
         break;
     case SOL_IP:
@@ -816,9 +817,11 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
         case IP_MULTICAST_LOOP:
             val = 0;
             if (optlen >= sizeof(uint32_t)) {
-                val = tget32(optval);
+                if (get_user_u32(val, optval_addr))
+                    return -TARGET_EFAULT;
             } else if (optlen >= 1) {
-                val = tget8(optval);
+                if (get_user_u8(val, optval_addr))
+                    return -TARGET_EFAULT;
             }
             ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
             break;
@@ -890,9 +893,10 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
             goto unimplemented;
         }
 	if (optlen < sizeof(uint32_t))
-	return -TARGET_EINVAL;
+            return -TARGET_EINVAL;
-	val = tget32(optval);
+	if (get_user_u32(val, optval_addr))
+            return -TARGET_EFAULT;
 	ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
         break;
     default:
@@ -905,7 +909,7 @@ static abi_long do_setsockopt(int sockfd, int level, int optname,
 /* do_getsockopt() Must return target values and target errnos. */
 static abi_long do_getsockopt(int sockfd, int level, int optname,
-                              abi_ulong optval, abi_ulong optlen)
+                              abi_ulong optval_addr, abi_ulong optlen)
 {
     abi_long ret;
     int len, lv, val;
@@ -928,7 +932,8 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
     case SOL_TCP:
         /* TCP options all take an 'int' value.  */
     int_case:
-        len = tget32(optlen);
+        if (get_user_u32(len, optlen))
+            return -TARGET_EFAULT;
         if (len < 0)
             return -TARGET_EINVAL;
         lv = sizeof(int);
@@ -938,11 +943,15 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
         val = tswap32(val);
         if (len > lv)
             len = lv;
-        if (len == 4)
-            tput32(optval, val);
-        else
-            tput8(optval, val);
-        tput32(optlen, len);
+        if (len == 4) {
+            if (put_user_u32(val, optval_addr))
+                return -TARGET_EFAULT;
+        } else {
+            if (put_user_u8(val, optval_addr))
+                return -TARGET_EFAULT;
+	}
+        if (put_user_u32(len, optlen))
+            return -TARGET_EFAULT;
         break;
     case SOL_IP:
         switch(optname) {
@@ -961,7 +970,8 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
 #endif
         case IP_MULTICAST_TTL:
         case IP_MULTICAST_LOOP:
-            len = tget32(optlen);
+            if (get_user_u32(len, optlen))
+                return -TARGET_EFAULT;
             if (len < 0)
                 return -TARGET_EINVAL;
             lv = sizeof(int);
@@ -970,13 +980,15 @@ static abi_long do_getsockopt(int sockfd, int level, int optname,
                 return ret;
             if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
                 len = 1;
-                tput32(optlen, len);
-                tput8(optval, val);
+                if (put_user_u32(len, optlen)
+                    || put_user_u8(val, optval_addr))
+                    return -TARGET_EFAULT;
             } else {
                 if (len > sizeof(int))
                     len = sizeof(int);
-                tput32(optlen, len);
-                tput32(optval, val);
+                if (put_user_u32(len, optlen)
+                    || put_user_u32(val, optval_addr))
+                    return -TARGET_EFAULT;
             }
             break;
         default:
@@ -1148,63 +1160,82 @@ static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg,
 /* do_accept() Must return target values and target errnos. */
 static abi_long do_accept(int fd, abi_ulong target_addr,
-                          abi_ulong target_addrlen)
+                          abi_ulong target_addrlen_addr)
 {
-    socklen_t addrlen = tget32(target_addrlen);
-    void *addr = alloca(addrlen);
+    socklen_t addrlen;
+    void *addr;
     abi_long ret;
+    if (get_user_u32(addrlen, target_addrlen_addr))
+        return -TARGET_EFAULT;
+
+    addr = alloca(addrlen);
+
     ret = get_errno(accept(fd, addr, &addrlen));
     if (!is_error(ret)) {
         host_to_target_sockaddr(target_addr, addr, addrlen);
-        tput32(target_addrlen, addrlen);
+        if (put_user_u32(addrlen, target_addrlen_addr))
+            ret = -TARGET_EFAULT;
     }
     return ret;
 }
 /* do_getpeername() Must return target values and target errnos. */
 static abi_long do_getpeername(int fd, abi_ulong target_addr,
-                               abi_ulong target_addrlen)
+                               abi_ulong target_addrlen_addr)
 {
-    socklen_t addrlen = tget32(target_addrlen);
-    void *addr = alloca(addrlen);
+    socklen_t addrlen;
+    void *addr;
     abi_long ret;
+    if (get_user_u32(addrlen, target_addrlen_addr))
+        return -TARGET_EFAULT;
+
+    addr = alloca(addrlen);
+
     ret = get_errno(getpeername(fd, addr, &addrlen));
     if (!is_error(ret)) {
         host_to_target_sockaddr(target_addr, addr, addrlen);
-        tput32(target_addrlen, addrlen);
+        if (put_user_u32(addrlen, target_addrlen_addr))
+            ret = -TARGET_EFAULT;
     }
     return ret;
 }
 /* do_getsockname() Must return target values and target errnos. */
 static abi_long do_getsockname(int fd, abi_ulong target_addr,
-                               abi_ulong target_addrlen)
+                               abi_ulong target_addrlen_addr)
 {
-    socklen_t addrlen = tget32(target_addrlen);
-    void *addr = alloca(addrlen);
+    socklen_t addrlen;
+    void *addr;
     abi_long ret;
+    if (get_user_u32(addrlen, target_addrlen_addr))
+        return -TARGET_EFAULT;
+
+    addr = alloca(addrlen);
+
     ret = get_errno(getsockname(fd, addr, &addrlen));
     if (!is_error(ret)) {
         host_to_target_sockaddr(target_addr, addr, addrlen);
-        tput32(target_addrlen, addrlen);
+        if (put_user_u32(addrlen, target_addrlen_addr))
+            ret = -TARGET_EFAULT;
     }
     return ret;
 }
 /* do_socketpair() Must return target values and target errnos. */
 static abi_long do_socketpair(int domain, int type, int protocol,
-                              abi_ulong target_tab)
+                              abi_ulong target_tab_addr)
 {
     int tab[2];
     abi_long ret;
     ret = get_errno(socketpair(domain, type, protocol, tab));
     if (!is_error(ret)) {
-        tput32(target_tab, tab[0]);
-        tput32(target_tab + 4, tab[1]);
+        if (put_user_s32(tab[0], target_tab_addr)
+            || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0])))
+            ret = -TARGET_EFAULT;
     }
     return ret;
 }
@@ -1245,7 +1276,10 @@ static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
     if (!host_msg)
         return -TARGET_EFAULT;
     if (target_addr) {
-        addrlen = tget32(target_addrlen);
+        if (get_user_u32(addrlen, target_addrlen)) {
+            ret = -TARGET_EFAULT;
+            goto fail;
+        }
         addr = alloca(addrlen);
         ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen));
     } else {
@@ -1255,10 +1289,14 @@ static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags,
     if (!is_error(ret)) {
         if (target_addr) {
             host_to_target_sockaddr(target_addr, addr, addrlen);
-            tput32(target_addrlen, addrlen);
+            if (put_user_u32(addrlen, target_addrlen)) {
+                ret = -TARGET_EFAULT;
+                goto fail;
+            }
         }
         unlock_user(host_msg, msg, len);
     } else {
+fail:
         unlock_user(host_msg, msg, 0);
     }
     return ret;
@@ -1274,112 +1312,187 @@ static abi_long do_socketcall(int num, abi_ulong vptr)
     switch(num) {
     case SOCKOP_socket:
 	{
-            int domain = tgetl(vptr);
-            int type = tgetl(vptr + n);
-            int protocol = tgetl(vptr + 2 * n);
+            int domain, type, protocol;
+
+            if (get_user_s32(domain, vptr)
+                || get_user_s32(type, vptr + n)
+                || get_user_s32(protocol, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_socket(domain, type, protocol);
 	}
         break;
     case SOCKOP_bind:
 	{
-            int sockfd = tgetl(vptr);
-            abi_ulong target_addr = tgetl(vptr + n);
-            socklen_t addrlen = tgetl(vptr + 2 * n);
+            int sockfd;
+            abi_ulong target_addr;
+            socklen_t addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(target_addr, vptr + n)
+                || get_user_u32(addrlen, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_bind(sockfd, target_addr, addrlen);
         }
         break;
     case SOCKOP_connect:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong target_addr = tgetl(vptr + n);
-            socklen_t addrlen = tgetl(vptr + 2 * n);
+            int sockfd;
+            abi_ulong target_addr;
+            socklen_t addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(target_addr, vptr + n)
+                || get_user_u32(addrlen, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_connect(sockfd, target_addr, addrlen);
         }
         break;
     case SOCKOP_listen:
         {
-            int sockfd = tgetl(vptr);
-            int backlog = tgetl(vptr + n);
+            int sockfd, backlog;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_s32(backlog, vptr + n))
+                return -TARGET_EFAULT;
+
             ret = get_errno(listen(sockfd, backlog));
         }
         break;
     case SOCKOP_accept:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong target_addr = tgetl(vptr + n);
-            abi_ulong target_addrlen = tgetl(vptr + 2 * n);
+            int sockfd;
+            abi_ulong target_addr, target_addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(target_addr, vptr + n)
+                || get_user_u32(target_addrlen, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_accept(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_getsockname:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong target_addr = tgetl(vptr + n);
-            abi_ulong target_addrlen = tgetl(vptr + 2 * n);
+            int sockfd;
+            abi_ulong target_addr, target_addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(target_addr, vptr + n)
+                || get_user_u32(target_addrlen, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_getsockname(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_getpeername:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong target_addr = tgetl(vptr + n);
-            abi_ulong target_addrlen = tgetl(vptr + 2 * n);
+            int sockfd;
+            abi_ulong target_addr, target_addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(target_addr, vptr + n)
+                || get_user_u32(target_addrlen, vptr + 2 * n))
+                return -TARGET_EFAULT;
+
             ret = do_getpeername(sockfd, target_addr, target_addrlen);
         }
         break;
     case SOCKOP_socketpair:
         {
-            int domain = tgetl(vptr);
-            int type = tgetl(vptr + n);
-            int protocol = tgetl(vptr + 2 * n);
-            abi_ulong tab = tgetl(vptr + 3 * n);
+            int domain, type, protocol;
+            abi_ulong tab;
+
+            if (get_user_s32(domain, vptr)
+                || get_user_s32(type, vptr + n)
+                || get_user_s32(protocol, vptr + 2 * n)
+                || get_user_ual(tab, vptr + 3 * n))
+                return -TARGET_EFAULT;
+
             ret = do_socketpair(domain, type, protocol, tab);
         }
         break;
     case SOCKOP_send:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong msg = tgetl(vptr + n);
-            size_t len = tgetl(vptr + 2 * n);
-            int flags = tgetl(vptr + 3 * n);
+            int sockfd;
+            abi_ulong msg;
+            size_t len;
+            int flags;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(msg, vptr + n)
+                || get_user_ual(len, vptr + 2 * n)
+                || get_user_s32(flags, vptr + 3 * n))
+                return -TARGET_EFAULT;
+
             ret = do_sendto(sockfd, msg, len, flags, 0, 0);
         }
         break;
     case SOCKOP_recv:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong msg = tgetl(vptr + n);
-            size_t len = tgetl(vptr + 2 * n);
-            int flags = tgetl(vptr + 3 * n);
+            int sockfd;
+            abi_ulong msg;
+            size_t len;
+            int flags;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(msg, vptr + n)
+                || get_user_ual(len, vptr + 2 * n)
+                || get_user_s32(flags, vptr + 3 * n))
+                return -TARGET_EFAULT;
+
             ret = do_recvfrom(sockfd, msg, len, flags, 0, 0);
         }
         break;
     case SOCKOP_sendto:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong msg = tgetl(vptr + n);
-            size_t len = tgetl(vptr + 2 * n);
-            int flags = tgetl(vptr + 3 * n);
-            abi_ulong addr = tgetl(vptr + 4 * n);
-            socklen_t addrlen = tgetl(vptr + 5 * n);
+            int sockfd;
+            abi_ulong msg;
+            size_t len;
+            int flags;
+            abi_ulong addr;
+            socklen_t addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(msg, vptr + n)
+                || get_user_ual(len, vptr + 2 * n)
+                || get_user_s32(flags, vptr + 3 * n)
+                || get_user_ual(addr, vptr + 4 * n)
+                || get_user_u32(addrlen, vptr + 5 * n))
+                return -TARGET_EFAULT;
+
             ret = do_sendto(sockfd, msg, len, flags, addr, addrlen);
         }
         break;
     case SOCKOP_recvfrom:
         {
-            int sockfd = tgetl(vptr);
-            abi_ulong msg = tgetl(vptr + n);
-            size_t len = tgetl(vptr + 2 * n);
-            int flags = tgetl(vptr + 3 * n);
-            abi_ulong addr = tgetl(vptr + 4 * n);
-            abi_ulong addrlen = tgetl(vptr + 5 * n);
+            int sockfd;
+            abi_ulong msg;
+            size_t len;
+            int flags;
+            abi_ulong addr;
+            socklen_t addrlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_ual(msg, vptr + n)
+                || get_user_ual(len, vptr + 2 * n)
+                || get_user_s32(flags, vptr + 3 * n)
+                || get_user_ual(addr, vptr + 4 * n)
+                || get_user_u32(addrlen, vptr + 5 * n))
+                return -TARGET_EFAULT;
+
             ret = do_recvfrom(sockfd, msg, len, flags, addr, addrlen);
         }
         break;
     case SOCKOP_shutdown:
         {
-            int sockfd = tgetl(vptr);
-            int how = tgetl(vptr + n);
+            int sockfd, how;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_s32(how, vptr + n))
+                return -TARGET_EFAULT;
             ret = get_errno(shutdown(sockfd, how));
         }
@@ -1391,9 +1504,10 @@ static abi_long do_socketcall(int num, abi_ulong vptr)
             abi_ulong target_msg;
             int flags;
-            fd = tgetl(vptr);
-            target_msg = tgetl(vptr + n);
-            flags = tgetl(vptr + 2 * n);
+            if (get_user_s32(fd, vptr)
+                || get_user_ual(target_msg, vptr + n)
+                || get_user_s32(flags, vptr + 2 * n))
+                return -TARGET_EFAULT;
             ret = do_sendrecvmsg(fd, target_msg, flags,
                                  (num == SOCKOP_sendmsg));
@@ -1401,24 +1515,38 @@ static abi_long do_socketcall(int num, abi_ulong vptr)
         break;
     case SOCKOP_setsockopt:
         {
-            int sockfd = tgetl(vptr);
-            int level = tgetl(vptr + n);
-            int optname = tgetl(vptr + 2 * n);
-            abi_ulong optval = tgetl(vptr + 3 * n);
-            socklen_t optlen = tgetl(vptr + 4 * n);
+            int sockfd;
+            int level;
+            int optname;
+            abi_ulong optval;
+            socklen_t optlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_s32(level, vptr + n)
+                || get_user_s32(optname, vptr + 2 * n)
+                || get_user_ual(optval, vptr + 3 * n)
+                || get_user_u32(optlen, vptr + 4 * n))
+                return -TARGET_EFAULT;
             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
         }
         break;
     case SOCKOP_getsockopt:
         {
-            int sockfd = tgetl(vptr);
-            int level = tgetl(vptr + n);
-            int optname = tgetl(vptr + 2 * n);
-            abi_ulong optval = tgetl(vptr + 3 * n);
-            abi_ulong poptlen = tgetl(vptr + 4 * n);
+            int sockfd;
+            int level;
+            int optname;
+            abi_ulong optval;
+            socklen_t optlen;
+
+            if (get_user_s32(sockfd, vptr)
+                || get_user_s32(level, vptr + n)
+                || get_user_s32(optname, vptr + 2 * n)
+                || get_user_ual(optval, vptr + 3 * n)
+                || get_user_u32(optlen, vptr + 4 * n))
+                return -TARGET_EFAULT;
-            ret = do_getsockopt(sockfd, level, optname, optval, poptlen);
+            ret = do_getsockopt(sockfd, level, optname, optval, optlen);
         }
         break;
     default:
@@ -1883,7 +2011,7 @@ static abi_long do_ipc(unsigned int call, int first,
                     break;
                 }
             }
-            if (put_user(raddr, third, abi_ulong))
+            if (put_user_ual(raddr, third))
                 return -TARGET_EFAULT;
             ret = 0;
         }
@@ -2957,10 +3085,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         unlock_user(p, arg2, 0);
         break;
     case TARGET_NR_open:
-        if (!(p = lock_user_string(arg1))) {
-            return -TARGET_EFAULT;
-            goto fail;
-        }
+        if (!(p = lock_user_string(arg1)))
+            goto efault;
         ret = get_errno(open(path(p),
                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
                              arg3));
@@ -2991,8 +3117,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         {
             int status;
             ret = get_errno(waitpid(arg1, &status, arg3));
-            if (!is_error(ret) && arg2)
-                tput32(arg2, status);
+            if (!is_error(ret) && arg2
+                && put_user_s32(status, arg2))
+                goto efault;
         }
         break;
 #endif
@@ -3059,56 +3186,71 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             argc = 0;
             guest_argp = arg2;
-            for (gp = guest_argp; tgetl(gp); gp++)
+            for (gp = guest_argp; ; gp++) {
+                if (get_user_ual(guest_argp, gp))
+                    goto efault;
+                if (!guest_argp)
+                    break;
                 argc++;
+            }
             envc = 0;
             guest_envp = arg3;
-            for (gp = guest_envp; tgetl(gp); gp++)
+            for (gp = guest_envp; ; gp++) {
+                if (get_user_ual(guest_envp, gp))
+                    goto efault;
+                if (!guest_envp)
+                    break;
                 envc++;
+            }
             argp = alloca((argc + 1) * sizeof(void *));
             envp = alloca((envc + 1) * sizeof(void *));
             for (gp = guest_argp, q = argp; ;
                   gp += sizeof(abi_ulong), q++) {
-                addr = tgetl(gp);
+                if (get_user_ual(addr, gp))
+                    goto execve_efault;
                 if (!addr)
                     break;
-                if (!(*q = lock_user_string(addr))) {
-                    ret = -TARGET_EFAULT;
-                    goto execve_fail;
-                }
+                if (!(*q = lock_user_string(addr)))
+                    goto execve_efault;
             }
             *q = NULL;
             for (gp = guest_envp, q = envp; ;
                   gp += sizeof(abi_ulong), q++) {
-                addr = tgetl(gp);
+                if (get_user_ual(addr, gp))
+                    goto execve_efault;
                 if (!addr)
                     break;
-                if (!(*q = lock_user_string(addr))) {
-                    ret = -TARGET_EFAULT;
-                    goto execve_fail;
-                }
+                if (!(*q = lock_user_string(addr)))
+                    goto execve_efault;
             }
             *q = NULL;
-            if (!(p = lock_user_string(arg1))) {
-                ret = -TARGET_EFAULT;
-                goto execve_fail;
-            }
+            if (!(p = lock_user_string(arg1)))
+                goto execve_efault;
             ret = get_errno(execve(p, argp, envp));
             unlock_user(p, arg1, 0);
-        execve_fail:
+            goto execve_end;
+
+        execve_efault:
+            ret = -TARGET_EFAULT;
+
+        execve_end:
             for (gp = guest_argp, q = argp; *q;
                   gp += sizeof(abi_ulong), q++) {
-                addr = tgetl(gp);
+                if (get_user_ual(addr, gp)
+                    || !addr)
+                    break;
                 unlock_user(*q, addr, 0);
             }
             for (gp = guest_envp, q = envp; *q;
                   gp += sizeof(abi_ulong), q++) {
-                addr = tgetl(gp);
+                if (get_user_ual(addr, gp)
+                    || !addr)
+                    break;
                 unlock_user(*q, addr, 0);
             }
         }
@@ -3124,8 +3266,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         {
             time_t host_time;
             ret = get_errno(time(&host_time));
-            if (!is_error(ret) && arg1)
-                tputl(arg1, host_time);
+            if (!is_error(ret)
+                && arg1
+                && put_user_sal(host_time, arg1))
+                goto efault;
         }
         break;
 #endif
@@ -3199,7 +3343,8 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
     case TARGET_NR_stime:
         {
             time_t host_time;
-            host_time = tgetl(arg1);
+            if (get_user_sal(host_time, arg1))
+                goto efault;
             ret = get_errno(stime(&host_time));
         }
         break;
@@ -3358,8 +3503,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 		env->gpr[3][env->current_tc] = host_pipe[1];
 		ret = host_pipe[0];
 #else
-                tput32(arg1, host_pipe[0]);
-                tput32(arg1 + 4, host_pipe[1]);
+                if (put_user_s32(host_pipe[0], arg1)
+                    || put_user_s32(host_pipe[1], arg1 + sizeof(host_pipe[0])))
+                    goto efault;
 #endif
             }
         }
@@ -4267,11 +4413,12 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                 rusage_ptr = NULL;
             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
             if (!is_error(ret)) {
-                if (status_ptr)
-                    tputl(status_ptr, status);
-                if (target_rusage) {
-                    host_to_target_rusage(target_rusage, &rusage);
+                if (status_ptr) {
+                    if (put_user_s32(status, status_ptr))
+                        goto efault;
                 }
+                if (target_rusage)
+                    host_to_target_rusage(target_rusage, &rusage);
             }
         }
         break;
@@ -4404,11 +4551,13 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
         {
 #if defined (__x86_64__)
             ret = get_errno(lseek(arg1, ((uint64_t )arg2 << 32) | arg3, arg5));
-            tput64(arg4, ret);
+            if (put_user_s64(ret, arg4))
+                goto efault;
 #else
             int64_t res;
             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
-            tput64(arg4, res);
+            if (put_user_s64(res, arg4))
+                goto efault;
 #endif
         }
         break;
@@ -4674,8 +4823,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                 {
                     int deathsig;
                     ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
-                    if (!is_error(ret) && arg2)
-                        tput32(arg2, deathsig);
+                    if (!is_error(ret) && arg2
+                        && put_user_ual(deathsig, arg2))
+                        goto efault;
                 }
                 break;
             default:
@@ -4932,9 +5082,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             uid_t ruid, euid, suid;
             ret = get_errno(getresuid(&ruid, &euid, &suid));
             if (!is_error(ret)) {
-                tput16(arg1, tswap16(high2lowuid(ruid)));
-                tput16(arg2, tswap16(high2lowuid(euid)));
-                tput16(arg3, tswap16(high2lowuid(suid)));
+                if (put_user_u16(high2lowuid(ruid), arg1)
+                    || put_user_u16(high2lowuid(euid), arg2)
+                    || put_user_u16(high2lowuid(suid), arg3))
+                    goto efault;
             }
         }
         break;
@@ -4952,9 +5103,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             gid_t rgid, egid, sgid;
             ret = get_errno(getresgid(&rgid, &egid, &sgid));
             if (!is_error(ret)) {
-                tput16(arg1, tswap16(high2lowgid(rgid)));
-                tput16(arg2, tswap16(high2lowgid(egid)));
-                tput16(arg3, tswap16(high2lowgid(sgid)));
+                if (put_user_u16(high2lowgid(rgid), arg1)
+                    || put_user_u16(high2lowgid(egid), arg2)
+                    || put_user_u16(high2lowgid(sgid), arg3))
+                    goto efault;
             }
         }
         break;
@@ -5077,9 +5229,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             uid_t ruid, euid, suid;
             ret = get_errno(getresuid(&ruid, &euid, &suid));
             if (!is_error(ret)) {
-                tput32(arg1, tswap32(ruid));
-                tput32(arg2, tswap32(euid));
-                tput32(arg3, tswap32(suid));
+                if (put_user_u32(ruid, arg1)
+                    || put_user_u32(euid, arg2)
+                    || put_user_u32(suid, arg3))
+                    goto efault;
             }
         }
         break;
@@ -5095,9 +5248,10 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
             gid_t rgid, egid, sgid;
             ret = get_errno(getresgid(&rgid, &egid, &sgid));
             if (!is_error(ret)) {
-                tput32(arg1, tswap32(rgid));
-                tput32(arg2, tswap32(egid));
-                tput32(arg3, tswap32(sgid));
+                if (put_user_u32(rgid, arg1)
+                    || put_user_u32(egid, arg2)
+                    || put_user_u32(sgid, arg3))
+                    goto efault;
             }
         }
         break;
@@ -142,15 +142,23 @@ static void m68k_semi_cb(CPUState *env, target_ulong ret, target_ulong err)
     if (m68k_semi_is_fseek) {
         /* FIXME: We've already lost the high bits of the fseek
            return value.  */
-        tput32(args, 0);
+        /* FIXME - handle put_user() failure */
+        put_user_u32(0, args);
         args += 4;
         m68k_semi_is_fseek = 0;
     }
-    tput32(args, ret);
-    tput32(args + 4, errno);
+    /* FIXME - handle put_user() failure */
+    put_user_u32(ret, args);
+    put_user_u32(errno, args + 4);
 }
-#define ARG(x) tget32(args + (x) * 4)
+#define ARG(n)					\
+({						\
+    target_ulong __arg;				\
+    /* FIXME - handle get_user() failure */	\
+    get_user_ual(__arg, args + (n) * 4);	\
+    __arg;					\
+})
 #define PARG(x) ((unsigned long)ARG(x))
 void do_m68k_semihosting(CPUM68KState *env, int nr)
 {
@@ -237,9 +245,10 @@ void do_m68k_semihosting(CPUM68KState *env, int nr)
                                ARG(0), off, ARG(3));
             } else {
                 off = lseek(ARG(0), off, ARG(3));
-                tput32(args, off >> 32);
-                tput32(args + 4, off);
-                tput32(args + 8, errno);
+                /* FIXME - handle put_user() failure */
+                put_user_u32(off >> 32, args);
+                put_user_u32(off, args + 4);
+                put_user_u32(errno, args + 8);
             }
             return;
         }
@@ -390,6 +399,7 @@ void do_m68k_semihosting(CPUM68KState *env, int nr)
         cpu_abort(env, "Unsupported semihosting syscall %d\n", nr);
         result = 0;
     }
-    tput32(args, result);
-    tput32(args + 4, errno);
+    /* FIXME - handle put_user() failure */
+    put_user_u32(result, args);
+    put_user_u32(errno, args + 4);
 }
@@ -21,15 +21,18 @@ static inline uint32_t softmmu_tget8(CPUState *env, uint32_t addr)
     cpu_memory_rw_debug(env, addr, &val, 1, 0);
     return val;
 }
-#define tget32(p) softmmu_tget32(env, p)
-#define tget8(p) softmmu_tget8(env, p)
+
+#define get_user_u32(arg, p) ({ arg = softmmu_tget32(env, p) ; 0; })
+#define get_user_u8(arg, p) ({ arg = softmmu_tget8(env, p) ; 0; })
+#define get_user_ual(arg, p) get_user_u32(arg, p)
 static inline void softmmu_tput32(CPUState *env, uint32_t addr, uint32_t val)
 {
     val = tswap32(val);
     cpu_memory_rw_debug(env, addr, (uint8_t *)&val, 4, 1);
 }
-#define tput32(p, val) softmmu_tput32(env, p, val)
+#define put_user_u32(arg, p) ({ softmmu_tput32(env, p, arg) ; 0; })
+#define put_user_ual(arg, p) put_user_u32(arg, p)
 static void *softmmu_lock_user(CPUState *env, uint32_t addr, uint32_t len,
                                int copy)
@@ -34,7 +34,8 @@ void loadSingle(const unsigned int Fn,const unsigned int *pMem)
    target_ulong addr = (target_ulong)(long)pMem;
    FPA11 *fpa11 = GET_FPA11();
    fpa11->fType[Fn] = typeSingle;
-   fpa11->fpreg[Fn].fSingle = tget32(addr);
+   /* FIXME - handle failure of get_user() */
+   get_user_u32(fpa11->fpreg[Fn].fSingle, addr);
 }
 static inline
@@ -46,11 +47,13 @@ void loadDouble(const unsigned int Fn,const unsigned int *pMem)
    p = (unsigned int*)&fpa11->fpreg[Fn].fDouble;
    fpa11->fType[Fn] = typeDouble;
 #ifdef WORDS_BIGENDIAN
-   p[0] = tget32(addr); /* sign & exponent */
-   p[1] = tget32(addr + 4);
+   /* FIXME - handle failure of get_user() */
+   get_user_u32(p[0], addr); /* sign & exponent */
+   get_user_u32(p[1], addr + 4);
 #else
-   p[0] = tget32(addr + 4);
-   p[1] = tget32(addr); /* sign & exponent */
+   /* FIXME - handle failure of get_user() */
+   get_user_u32(p[0], addr + 4);
+   get_user_u32(p[1], addr); /* sign & exponent */
 #endif
 }
@@ -62,9 +65,10 @@ void loadExtended(const unsigned int Fn,const unsigned int *pMem)
    unsigned int *p;
    p = (unsigned int*)&fpa11->fpreg[Fn].fExtended;
    fpa11->fType[Fn] = typeExtended;
-   p[0] = tget32(addr);  /* sign & exponent */
-   p[1] = tget32(addr + 8);  /* ls bits */
-   p[2] = tget32(addr + 4);  /* ms bits */
+   /* FIXME - handle failure of get_user() */
+   get_user_u32(p[0], addr);  /* sign & exponent */
+   get_user_u32(p[1], addr + 8);  /* ls bits */
+   get_user_u32(p[2], addr + 4);  /* ms bits */
 }
 static inline
@@ -76,7 +80,8 @@ void loadMultiple(const unsigned int Fn,const unsigned int *pMem)
    unsigned long x;
    p = (unsigned int*)&(fpa11->fpreg[Fn]);
-   x = tget32(addr);
+   /* FIXME - handle failure of get_user() */
+   get_user_u32(x, addr);
    fpa11->fType[Fn] = (x >> 14) & 0x00000003;
    switch (fpa11->fType[Fn])
@@ -84,16 +89,18 @@ void loadMultiple(const unsigned int Fn,const unsigned int *pMem)
       case typeSingle:
       case typeDouble:
       {
-         p[0] = tget32(addr + 8);  /* Single */
-         p[1] = tget32(addr + 4);  /* double msw */
+         /* FIXME - handle failure of get_user() */
+         get_user_u32(p[0], addr + 8);  /* Single */
+         get_user_u32(p[1], addr + 4);  /* double msw */
          p[2] = 0;        /* empty */
       }
       break;
       case typeExtended:
       {
-         p[1] = tget32(addr + 8);
-         p[2] = tget32(addr + 4);  /* msw */
+         /* FIXME - handle failure of get_user() */
+         get_user_u32(p[1], addr + 8);
+         get_user_u32(p[2], addr + 4);  /* msw */
          p[0] = (x & 0x80003fff);
       }
       break;
@@ -121,7 +128,8 @@ void storeSingle(const unsigned int Fn,unsigned int *pMem)
       default: val = fpa11->fpreg[Fn].fSingle;
    }
-   tput32(addr, p[0]);
+   /* FIXME - handle put_user() failures */
+   put_user_u32(p[0], addr);
 }
 static inline
@@ -144,12 +152,13 @@ void storeDouble(const unsigned int Fn,unsigned int *pMem)
       default: val = fpa11->fpreg[Fn].fDouble;
    }
+   /* FIXME - handle put_user() failures */
 #ifdef WORDS_BIGENDIAN
-   tput32(addr, p[0]);	/* msw */
-   tput32(addr + 4, p[1]);	/* lsw */
+   put_user_u32(p[0], addr);	/* msw */
+   put_user_u32(p[1], addr + 4);	/* lsw */
 #else
-   tput32(addr, p[1]);	/* msw */
-   tput32(addr + 4, p[0]);	/* lsw */
+   put_user_u32(p[1], addr);	/* msw */
+   put_user_u32(p[0], addr + 4);	/* lsw */
 #endif
 }
@@ -174,9 +183,10 @@ void storeExtended(const unsigned int Fn,unsigned int *pMem)
       default: val = fpa11->fpreg[Fn].fExtended;
    }
-   tput32(addr, p[0]); /* sign & exp */
-   tput32(addr + 8, p[1]);
-   tput32(addr + 4, p[2]); /* msw */
+   /* FIXME - handle put_user() failures */
+   put_user_u32(p[0], addr); /* sign & exp */
+   put_user_u32(p[1], addr + 8);
+   put_user_u32(p[2], addr + 4); /* msw */
 }
 static inline
@@ -194,17 +204,17 @@ void storeMultiple(const unsigned int Fn,unsigned int *pMem)
       case typeSingle:
       case typeDouble:
       {
-	 tput32(addr + 8, p[0]); /* single */
-	 tput32(addr + 4, p[1]); /* double msw */
-	 tput32(addr, nType << 14);
+         put_user_u32(p[0], addr + 8); /* single */
+	 put_user_u32(p[1], addr + 4); /* double msw */
+	 put_user_u32(nType << 14, addr);
       }
       break;
       case typeExtended:
       {
-	 tput32(addr + 4, p[2]); /* msw */
-	 tput32(addr + 8, p[1]);
-	 tput32(addr, (p[0] & 0x80003fff) | (nType << 14));
+         put_user_u32(p[2], addr + 4); /* msw */
+	 put_user_u32(p[1], addr + 8);
+	 put_user_u32((p[0] & 0x80003fff) | (nType << 14), addr);
       }
       break;
    }