diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2015-01-27 01:15:10 +0300 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2017-05-01 10:34:43 -0700 |
| commit | 062b1c19b879e7831cbceb599ab1d758f87eda40 (patch) | |
| tree | 33d6824f10f7d50cf3147ef96f1ab37b70022969 /arch/xtensa/kernel/signal.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/signal.c')
| -rw-r--r-- | arch/xtensa/kernel/signal.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index 70a131945443..d427e784ab44 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -91,14 +91,14 @@ flush_window_regs_user(struct pt_regs *regs) inc = 1; } else if (m & 4) { /* call8 */ - if (copy_to_user((void*)(sp - 32), - ®s->areg[(base + 1) * 4], 16)) + if (copy_to_user(&SPILL_SLOT_CALL8(sp, 4), + ®s->areg[(base + 1) * 4], 16)) goto errout; inc = 2; } else if (m & 8) { /* call12 */ - if (copy_to_user((void*)(sp - 48), - ®s->areg[(base + 1) * 4], 32)) + if (copy_to_user(&SPILL_SLOT_CALL12(sp, 4), + ®s->areg[(base + 1) * 4], 32)) goto errout; inc = 3; } @@ -106,7 +106,7 @@ flush_window_regs_user(struct pt_regs *regs) /* Save current frame a0..a3 under next SP */ sp = regs->areg[((base + inc) * 4 + 1) % XCHAL_NUM_AREGS]; - if (copy_to_user((void*)(sp - 16), ®s->areg[base * 4], 16)) + if (copy_to_user(&SPILL_SLOT(sp, 0), ®s->areg[base * 4], 16)) goto errout; /* Get current stack pointer for next loop iteration. */ |