Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
[PATCH] alpha: task_pt_regs()
)
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>
authored by akpm@osdl.org and committed by Linus Torvalds e52f4ca2 27f45130
+2
-17
arch/alpha/kernel/process.c
+2
-17
arch/alpha/kernel/process.c
···
428
int
429
dump_elf_task(elf_greg_t *dest, struct task_struct *task)
430
{
431
-
struct thread_info *ti;
432
-
struct pt_regs *pt;
433
-
434
-
ti = task->thread_info;
435
-
pt = (struct pt_regs *)((unsigned long)ti + 2*PAGE_SIZE) - 1;
436
-
437
-
dump_elf_thread(dest, pt, ti);
438
-
439
return 1;
440
}
441
442
int
443
dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task)
444
{
445
-
struct thread_info *ti;
446
-
struct pt_regs *pt;
447
-
struct switch_stack *sw;
448
-
449
-
ti = task->thread_info;
450
-
pt = (struct pt_regs *)((unsigned long)ti + 2*PAGE_SIZE) - 1;
451
-
sw = (struct switch_stack *)pt - 1;
452
-
453
memcpy(dest, sw->fp, 32 * 8);
454
-
455
return 1;
456
}
457
···
428
int
429
dump_elf_task(elf_greg_t *dest, struct task_struct *task)
430
{
431
+
dump_elf_thread(dest, task_pt_regs(task), task_thread_info(task));
432
return 1;
433
}
434
435
int
436
dump_elf_task_fp(elf_fpreg_t *dest, struct task_struct *task)
437
{
438
+
struct switch_stack *sw = (struct switch_stack *)task_pt_regs(task) - 1;
439
memcpy(dest, sw->fp, 32 * 8);
440
return 1;
441
}
442
+7
arch/alpha/kernel/ptrace.c
+7
arch/alpha/kernel/ptrace.c
···
72
REG_R0 = 0, REG_F0 = 32, REG_FPCR = 63, REG_PC = 64
73
};
74
75
+
#define PT_REG(reg) \
76
+
(PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg))
77
+
78
+
#define SW_REG(reg) \
79
+
(PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \
80
+
+ offsetof(struct switch_stack, reg))
81
+
82
static int regoff[] = {
83
PT_REG( r0), PT_REG( r1), PT_REG( r2), PT_REG( r3),
84
PT_REG( r4), PT_REG( r5), PT_REG( r6), PT_REG( r7),
+1
-10
include/asm-alpha/processor.h
+1
-10
include/asm-alpha/processor.h
···
52
53
unsigned long get_wchan(struct task_struct *p);
54
55
-
/* See arch/alpha/kernel/ptrace.c for details. */
56
-
#define PT_REG(reg) \
57
-
(PAGE_SIZE*2 - sizeof(struct pt_regs) + offsetof(struct pt_regs, reg))
58
-
59
-
#define SW_REG(reg) \
60
-
(PAGE_SIZE*2 - sizeof(struct pt_regs) - sizeof(struct switch_stack) \
61
-
+ offsetof(struct switch_stack, reg))
62
-
63
-
#define KSTK_EIP(tsk) \
64
-
(*(unsigned long *)(PT_REG(pc) + (unsigned long) ((tsk)->thread_info)))
65
66
#define KSTK_ESP(tsk) \
67
((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
+2
-2
include/asm-alpha/ptrace.h
+2
-2
include/asm-alpha/ptrace.h
···
75
#define profile_pc(regs) instruction_pointer(regs)
76
extern void show_regs(struct pt_regs *);
77
78
-
#define alpha_task_regs(task) \
79
((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)
80
81
-
#define force_successful_syscall_return() (alpha_task_regs(current)->r0 = 0)
82
83
#endif
84
···
75
#define profile_pc(regs) instruction_pointer(regs)
76
extern void show_regs(struct pt_regs *);
77
78
+
#define task_pt_regs(task) \
79
((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)
80
81
+
#define force_successful_syscall_return() (task_pt_regs(current)->r0 = 0)
82
83
#endif
84