From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH 03/04] sh: remove EXPEVT vector from stack on sh3/sh4/sh4a
Date: Mon, 23 Feb 2009 07:16:34 +0000 [thread overview]
Message-ID: <20090223071634.12295.18307.sendpatchset@rx1.opensource.se> (raw)
From: Magnus Damm <damm@igel.co.jp>
Remove EXPEVT vector from the stack, lookup_exception_vector()
for sh3/sh4/sh4a is already using k2 to get the vector.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
---
arch/sh/include/asm/ptrace.h | 8 +++-----
arch/sh/kernel/cpu/sh3/entry.S | 5 +----
2 files changed, 4 insertions(+), 9 deletions(-)
--- 0001/arch/sh/include/asm/ptrace.h
+++ work/arch/sh/include/asm/ptrace.h 2009-02-23 13:50:20.000000000 +0900
@@ -122,14 +122,12 @@ extern void user_disable_single_step(str
#ifdef CONFIG_SH_DSP
#define task_pt_regs(task) \
((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
- - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
+ - sizeof(struct pt_dspregs)) - 1)
#define task_pt_dspregs(task) \
- ((struct pt_dspregs *) (task_stack_page(task) + THREAD_SIZE \
- - sizeof(unsigned long)) - 1)
+ ((struct pt_dspregs *) (task_stack_page(task) + THREAD_SIZE) - 1)
#else
#define task_pt_regs(task) \
- ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
- - sizeof(unsigned long)) - 1)
+ ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE) - 1)
#endif
static inline unsigned long profile_pc(struct pt_regs *regs)
--- 0006/arch/sh/kernel/cpu/sh3/entry.S
+++ work/arch/sh/kernel/cpu/sh3/entry.S 2009-02-23 13:50:58.000000000 +0900
@@ -312,7 +312,6 @@ skip_restore:
mov #0, k1
mov.b k1, @k0
#endif
- mov.l @r15+, k2 ! restore EXPEVT
mov k4, r15
rte
nop
@@ -487,20 +486,18 @@ handle_exception_special:
.align L1_CACHE_SHIFT
! save_regs()
-! - save vector, default tra, macl, mach, gbr, ssr, pr* and spc on the stack
+! - save default tra, macl, mach, gbr, ssr, pr* and spc on the stack
! - save r15*, r14, r13, r12, r11, r10, r9, r8 on the stack
! - switch bank
! - save r7, r6, r5, r4, r3, r2, r1, r0 on the stack
! k0 contains original stack pointer*
! k1 trashed
-! k2 passes vector (EXPEVT)
! k3 passes original pr*
! k4 trashed
! BL=1 on entry, on exit BL=0.
save_regs:
mov #-1, r1
- mov.l k2, @-r15 ! vector in k2
mov.l k1, @-r15 ! set TRA (default: -1)
sts.l macl, @-r15
sts.l mach, @-r15
reply other threads:[~2009-02-23 7:16 UTC|newest]
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