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author | Max Filippov | 2015-01-27 01:15:10 +0300 |
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committer | Max Filippov | 2017-05-01 10:34:43 -0700 |
commit | 062b1c19b879e7831cbceb599ab1d758f87eda40 (patch) | |
tree | 33d6824f10f7d50cf3147ef96f1ab37b70022969 /arch/xtensa/kernel/process.c | |
parent | f984409a00e7d9aa40af64d7c9619e5de3d980bf (diff) |
xtensa: clean up access to spilled registers locations
Define macros SPILL_SLOT* that return a reference to the stack location
of the spill slot for specific register and use them instead of opencoded
address calculations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/process.c')
-rw-r--r-- | arch/xtensa/kernel/process.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index 58f96d1230d4..ff4f0ecb03dd 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -204,8 +204,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp_thread_fn, #endif /* Create a call4 dummy-frame: a0 = 0, a1 = childregs. */ - *((int*)childregs - 3) = (unsigned long)childregs; - *((int*)childregs - 4) = 0; + SPILL_SLOT(childregs, 1) = (unsigned long)childregs; + SPILL_SLOT(childregs, 0) = 0; p->thread.sp = (unsigned long)childregs; @@ -266,8 +266,8 @@ int copy_thread(unsigned long clone_flags, unsigned long usp_thread_fn, /* pass parameters to ret_from_kernel_thread: * a2 = thread_fn, a3 = thread_fn arg */ - *((int *)childregs - 1) = thread_fn_arg; - *((int *)childregs - 2) = usp_thread_fn; + SPILL_SLOT(childregs, 3) = thread_fn_arg; + SPILL_SLOT(childregs, 2) = usp_thread_fn; /* Childregs are only used when we're going to userspace * in which case start_thread will set them up. |