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| author | Hirokazu Takata <takata@linux-m32r.org> | 2006-01-06 00:18:42 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:43 -0800 |
| commit | 1b5b776aa5730cbda9cba84ba0f8ccd53a775797 (patch) | |
| tree | 60b661ac7cceba108dd07062a54e7fb724a19e72 /include/asm-m32r/unistd.h | |
| parent | 9287d95ea194abf32fab24c6909f8ea55ab0292f (diff) | |
| download | op-kernel-dev-1b5b776aa5730cbda9cba84ba0f8ccd53a775797.zip op-kernel-dev-1b5b776aa5730cbda9cba84ba0f8ccd53a775797.tar.gz | |
[PATCH] m32r: Update syscall macros for MMU-less targets
This patch is for updating m32r's MMU-less support.
Some legacy MMU-less m32r chips cannot return from a trap handler to the
right-hand side 16-bit halfword code of a 32-bit instrucion code pair, because
a "trap" instruction specification was expanded in M32R-II ISA.
This modification forces "trap" instructions to be placed in word alignment
location with a parallel "nop" code.
Signed-off-by: Kazuhiro Inaoka <inaoka@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>
Diffstat (limited to 'include/asm-m32r/unistd.h')
| -rw-r--r-- | include/asm-m32r/unistd.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-m32r/unistd.h b/include/asm-m32r/unistd.h index ac399e1..39be87c 100644 --- a/include/asm-m32r/unistd.h +++ b/include/asm-m32r/unistd.h @@ -319,7 +319,7 @@ type name(void) \ register long __scno __asm__ ("r7") = __NR_##name; \ register long __res __asm__("r0"); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno) \ : "memory"); \ @@ -332,7 +332,7 @@ type name(type1 arg1) \ register long __scno __asm__ ("r7") = __NR_##name; \ register long __res __asm__ ("r0") = (long)(arg1); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno), "0" (__res) \ : "memory"); \ @@ -346,7 +346,7 @@ register long __scno __asm__ ("r7") = __NR_##name; \ register long __arg2 __asm__ ("r1") = (long)(arg2); \ register long __res __asm__ ("r0") = (long)(arg1); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno), "0" (__res), "r" (__arg2) \ : "memory"); \ @@ -361,7 +361,7 @@ register long __arg3 __asm__ ("r2") = (long)(arg3); \ register long __arg2 __asm__ ("r1") = (long)(arg2); \ register long __res __asm__ ("r0") = (long)(arg1); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno), "0" (__res), "r" (__arg2), \ "r" (__arg3) \ @@ -378,7 +378,7 @@ register long __arg3 __asm__ ("r2") = (long)(arg3); \ register long __arg2 __asm__ ("r1") = (long)(arg2); \ register long __res __asm__ ("r0") = (long)(arg1); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno), "0" (__res), "r" (__arg2), \ "r" (__arg3), "r" (__arg4) \ @@ -397,7 +397,7 @@ register long __arg3 __asm__ ("r2") = (long)(arg3); \ register long __arg2 __asm__ ("r1") = (long)(arg2); \ register long __res __asm__ ("r0") = (long)(arg1); \ __asm__ __volatile__ (\ - "trap #" SYSCALL_VECTOR \ + "trap #" SYSCALL_VECTOR "|| nop"\ : "=r" (__res) \ : "r" (__scno), "0" (__res), "r" (__arg2), \ "r" (__arg3), "r" (__arg4), "r" (__arg5) \ |
