From: Al Viro <viro@ftp.linux.org.uk>
To: torvalds@osdl.org
Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: [PATCH 04/50] alpha: task_pt_regs()
Date: Tue, 03 Jan 2006 21:07:38 +0000 [thread overview]
Message-ID: <E1EttNa-0008PK-53@ZenIV.linux.org.uk> (raw)
References: <20060103210515.5135@ftp.linux.org.uk>
In-Reply-To: <20060103210515.5135@ftp.linux.org.uk>
rename alpha_task_regs() to task_pt_regs(), switch open-coded instances
to use of the helper.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
arch/alpha/kernel/process.c | 19 ++-----------------
arch/alpha/kernel/ptrace.c | 7 +++++++
include/asm-alpha/processor.h | 11 +----------
include/asm-alpha/ptrace.h | 4 ++--
4 files changed, 12 insertions(+), 29 deletions(-)
1e0e86cf54c28396e85a85bab125822292264ce3
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 04c5342..3b967de 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -423,30 +423,15 @@ dump_elf_thread(elf_greg_t *dest, struct
int
dump_elf_task(elf_greg_t *dest, struct task_struct *task)
{
- struct thread_info *ti;
- struct pt_regs *pt;
-
- ti = task->thread_info;
- pt = (struct pt_regs *)((unsigned long)ti + 2*PAGE_SIZE) - 1;
-
- dump_elf_thread(dest, pt, ti);
-
+ dump_elf_thread(dest, task_pt_regs(task), task_thread_info(task));
return 1;
}
int
dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task)
{
- struct thread_info *ti;
- struct pt_regs *pt;
- struct switch_stack *sw;
-
- ti = task->thread_info;
- pt = (struct pt_regs *)((unsigned long)ti + 2*PAGE_SIZE) - 1;
- sw = (struct switch_stack *)pt - 1;
-
+ struct switch_stack *sw = (struct switch_stack *)task_pt_regs(task) - 1;
memcpy(dest, sw->fp, 32 * 8);
-
return 1;
}
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 67c0cb6..0f9753f 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -72,6 +72,13 @@ enum {
REG_R0 = 0, REG_F0 = 32, REG_FPCR = 63, REG_PC = 64
};
+#define PT_REG(reg) \
+ (PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg))
+
+#define SW_REG(reg) \
+ (PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \
+ + offsetof(struct switch_stack, reg))
+
static int regoff[] = {
PT_REG( r0), PT_REG( r1), PT_REG( r2), PT_REG( r3),
PT_REG( r4), PT_REG( r5), PT_REG( r6), PT_REG( r7),
diff --git a/include/asm-alpha/processor.h b/include/asm-alpha/processor.h
index e59a6ec..f414fd0 100644
--- a/include/asm-alpha/processor.h
+++ b/include/asm-alpha/processor.h
@@ -52,16 +52,7 @@ extern long kernel_thread(int (*fn)(void
unsigned long get_wchan(struct task_struct *p);
-/* See arch/alpha/kernel/ptrace.c for details. */
-#define PT_REG(reg) \
- (PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg))
-
-#define SW_REG(reg) \
- (PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \
- + offsetof(struct switch_stack, reg))
-
-#define KSTK_EIP(tsk) \
- (*(unsigned long *)(PT_REG(pc) + (unsigned long) ((tsk)->thread_info)))
+#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) \
((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
diff --git a/include/asm-alpha/ptrace.h b/include/asm-alpha/ptrace.h
index 994680b..9933b8b 100644
--- a/include/asm-alpha/ptrace.h
+++ b/include/asm-alpha/ptrace.h
@@ -75,10 +75,10 @@ struct switch_stack {
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs *);
-#define alpha_task_regs(task) \
+#define task_pt_regs(task) \
((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)
-#define force_successful_syscall_return() (alpha_task_regs(current)->r0 = 0)
+#define force_successful_syscall_return() (task_pt_regs(current)->r0 = 0)
#endif
--
0.99.9.GIT
reply other threads:[~2006-01-03 21:14 UTC|newest]
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