[PATCH] mips: task_pt_regs()
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>
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@ -229,9 +229,7 @@ void elf_dump_regs(elf_greg_t *gp, struct pt_regs *regs)
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int dump_task_regs (struct task_struct *tsk, elf_gregset_t *regs)
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{
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struct thread_info *ti = tsk->thread_info;
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long ksp = (unsigned long)ti + THREAD_SIZE - 32;
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elf_dump_regs(&(*regs)[0], (struct pt_regs *) ksp - 1);
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elf_dump_regs(*regs, task_pt_regs(tsk));
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return 1;
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}
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@ -64,8 +64,7 @@ int ptrace_getregs (struct task_struct *child, __s64 __user *data)
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if (!access_ok(VERIFY_WRITE, data, 38 * 8))
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return -EIO;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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for (i = 0; i < 32; i++)
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__put_user (regs->regs[i], data + i);
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@ -92,8 +91,7 @@ int ptrace_setregs (struct task_struct *child, __s64 __user *data)
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if (!access_ok(VERIFY_READ, data, 38 * 8))
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return -EIO;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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for (i = 0; i < 32; i++)
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__get_user (regs->regs[i], data + i);
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@ -198,8 +196,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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struct pt_regs *regs;
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unsigned long tmp = 0;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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ret = 0; /* Default return value. */
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switch (addr) {
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@ -314,8 +311,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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case PTRACE_POKEUSR: {
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struct pt_regs *regs;
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ret = 0;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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switch (addr) {
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case 0 ... 31:
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@ -126,8 +126,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
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struct pt_regs *regs;
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unsigned int tmp;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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ret = 0; /* Default return value. */
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switch (addr) {
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@ -259,8 +258,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
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case PTRACE_POKEUSR: {
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struct pt_regs *regs;
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ret = 0;
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regs = (struct pt_regs *) ((unsigned long) child->thread_info +
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THREAD_SIZE - 32 - sizeof(struct pt_regs));
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regs = task_pt_regs(child);
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switch (addr) {
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case 0 ... 31:
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@ -200,11 +200,11 @@ extern void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long
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unsigned long get_wchan(struct task_struct *p);
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#define __PT_REG(reg) ((long)&((struct pt_regs *)0)->reg - sizeof(struct pt_regs))
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#define __KSTK_TOS(tsk) ((unsigned long)(tsk->thread_info) + THREAD_SIZE - 32)
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#define KSTK_EIP(tsk) (*(unsigned long *)(__KSTK_TOS(tsk) + __PT_REG(cp0_epc)))
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#define KSTK_ESP(tsk) (*(unsigned long *)(__KSTK_TOS(tsk) + __PT_REG(regs[29])))
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#define KSTK_STATUS(tsk) (*(unsigned long *)(__KSTK_TOS(tsk) + __PT_REG(cp0_status)))
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#define task_pt_regs(tsk) ((struct pt_regs *)__KSTK_TOS(tsk) - 1)
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#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
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#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
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#define KSTK_STATUS(tsk) (task_pt_regs(tsk)->cp0_status)
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#define cpu_relax() barrier()
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@ -159,7 +159,7 @@ struct task_struct;
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do { \
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if (cpu_has_dsp) \
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__save_dsp(prev); \
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(last) = resume(prev, next, next->thread_info); \
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(last) = resume(prev, next, task_thread_info(next)); \
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if (cpu_has_dsp) \
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__restore_dsp(current); \
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} while(0)
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