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[PATCH] xtensa: task_pt_regs(), task_stack_page() 

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:
Al Viro 2006-01-12 01:05:50 -08:00 committed by Linus Torvalds
parent 30af7120fe
commit 04fe6faf10
4 changed files with 13 additions and 13 deletions
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4
arch/xtensa/kernel/process.c
View File

@ -145,7 +145,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
int user_mode = user_mode(regs);
/* Set up new TSS. */
tos = (unsigned long)p->thread_info + THREAD_SIZE;
tos = (unsigned long)task_stack_page(p) + THREAD_SIZE;
if (user_mode)
childregs = (struct pt_regs*)(tos - PT_USER_SIZE);
else
@ -217,7 +217,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
unsigned long get_wchan(struct task_struct *p)
{
unsigned long sp, pc;
unsigned long stack_page = (unsigned long) p->thread_info;
unsigned long stack_page = (unsigned long) task_stack_page(p);
int count = 0;
if (!p || p == current || p->state == TASK_RUNNING)

12
arch/xtensa/kernel/ptrace.c
View File

@ -72,7 +72,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
struct pt_regs *regs;
unsigned long tmp;
regs = xtensa_pt_regs(child);
regs = task_pt_regs(child);
tmp = 0; /* Default return value. */
switch(addr) {
@ -149,7 +149,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_POKEUSR:
{
struct pt_regs *regs;
regs = xtensa_pt_regs(child);
regs = task_pt_regs(child);
switch (addr) {
case REG_AR_BASE ... REG_AR_BASE + XCHAL_NUM_AREGS - 1:
@ -240,7 +240,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
* elf_gregset_t format. */
xtensa_gregset_t format;
struct pt_regs *regs = xtensa_pt_regs(child);
struct pt_regs *regs = task_pt_regs(child);
do_copy_regs (&format, regs, child);
@ -257,7 +257,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
* values in the elf_gregset_t format. */
xtensa_gregset_t format;
struct pt_regs *regs = xtensa_pt_regs(child);
struct pt_regs *regs = task_pt_regs(child);
if (copy_from_user(&format,(void *)data,sizeof(elf_gregset_t))){
ret = -EFAULT;
@ -281,7 +281,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
* elf_fpregset_t format. */
elf_fpregset_t fpregs;
struct pt_regs *regs = xtensa_pt_regs(child);
struct pt_regs *regs = task_pt_regs(child);
do_save_fpregs (&fpregs, regs, child);
@ -299,7 +299,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
* values in the elf_fpregset_t format.
*/
elf_fpregset_t fpregs;
struct pt_regs *regs = xtensa_pt_regs(child);
struct pt_regs *regs = task_pt_regs(child);
ret = 0;
if (copy_from_user(&fpregs, (void *)data, sizeof(elf_fpregset_t))) {

6
include/asm-xtensa/processor.h
View File

@ -184,12 +184,12 @@ extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
#define release_segments(mm) do { } while(0)
#define forget_segments() do { } while (0)
#define thread_saved_pc(tsk) (xtensa_pt_regs(tsk)->pc)
#define thread_saved_pc(tsk) (task_pt_regs(tsk)->pc)
extern unsigned long get_wchan(struct task_struct *p);
#define KSTK_EIP(tsk) (xtensa_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) (xtensa_pt_regs(tsk)->areg[1])
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->areg[1])
#define cpu_relax() do { } while (0)

4
include/asm-xtensa/ptrace.h
View File

@ -113,8 +113,8 @@ struct pt_regs {
};
#ifdef __KERNEL__
# define xtensa_pt_regs(tsk) ((struct pt_regs*) \
(((long)(tsk)->thread_info + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4)) - 1)
# define task_pt_regs(tsk) ((struct pt_regs*) \
(task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
# define instruction_pointer(regs) ((regs)->pc)
extern void show_regs(struct pt_regs *);