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[PATCH] alpha: task_pt_regs()

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From: Al Viro <viro@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>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
akpm@osdl.org 2006-01-12 01:05:37 -08:00 committed by Linus Torvalds
parent 27f451304a
commit e52f4ca2a7
4 changed files with 12 additions and 29 deletions
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19
arch/alpha/kernel/process.c
View file

@ -428,30 +428,15 @@ dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, struct thread_info *ti)
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;
}

7
arch/alpha/kernel/ptrace.c
View file

@ -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),

11
include/asm-alpha/processor.h
View file

@ -52,16 +52,7 @@ extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
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)

4
include/asm-alpha/ptrace.h
View file

@ -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