[PATCH] m32r: fix and update for gcc-4.0

Fix and update for gcc-4.0.

- arch/m32r/kernel/signal.c:
  Change type of the 8th parameter of sys_rt_sigsuspend() from
  'struct pt_regs' to 'struct pt_regs *'.
  This functions make use of the 'regs' parameter to return status value,
  but gcc-4.0 optimizes and removes it as a dead code.
  Functions, sys_sigaltstack() and sys_rt_sigreturn(), have also modified.

- arch/m32r/lib/usercopy.c, include/asm-m32r/uaccess.h:
  Add early-clobber constraints('&') to output values of asm statements;
  these constraints seems to be required for gcc-4.0 register assignment.

Signed-off-by: Hayato Fujiwara <fujiwara@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/asm-m32r/uaccess.h b/include/asm-m32r/uaccess.h
index 0da7c47d2f01..e8ae61956a51 100644
--- a/include/asm-m32r/uaccess.h
+++ b/include/asm-m32r/uaccess.h
@@ -328,7 +328,7 @@ extern void __put_user_bad(void);
                 "       .long 1b,4b\n"                                  \
                 "       .long 2b,4b\n"                                  \
                 ".previous"                                             \
-                : "=r"(err)                                             \
+                : "=&r"(err)                                             \
                 : "r"(x), "r"(addr), "i"(-EFAULT), "0"(err)             \
                 : "r14", "memory")
 
@@ -353,7 +353,7 @@ extern void __put_user_bad(void);
                 "       .long 1b,4b\n"                                  \
                 "       .long 2b,4b\n"                                  \
                 ".previous"                                             \
-                : "=r"(err)                                             \
+                : "=&r"(err)                                            \
                 : "r"(x), "r"(addr), "i"(-EFAULT), "0"(err)             \
                 : "r14", "memory")
 #else
@@ -398,7 +398,7 @@ struct __large_struct { unsigned long buf[100]; };
                 "       .balign 4\n"                                    \
                 "       .long 1b,3b\n"                                  \
                 ".previous"                                             \
-                : "=r"(err)                                             \
+                : "=&r"(err)                                            \
                 : "r"(x), "r"(addr), "i"(-EFAULT), "0"(err)             \
                 : "r14", "memory")
 
@@ -442,7 +442,7 @@ do {									\
                 "       .balign 4\n"                                    \
                 "       .long 1b,3b\n"                                  \
                 ".previous"                                             \
-                : "=r"(err), "=&r"(x)                                   \
+                : "=&r"(err), "=&r"(x)                                  \
                 : "r"(addr), "i"(-EFAULT), "0"(err)                     \
                 : "r14", "memory")