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powerpc: Add macros to access floating point registers in thread_struct.

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We are going to change where the floating point registers are stored
in the thread_struct, so in preparation add some macros to access the
floating point registers.  Update all code to use these new macros.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Neuling
2008-06-26 17:07:48 +10:00
committed by Paul Mackerras
parent 9e7511861c
commit 9c75a31c35
8 changed files with 58 additions and 43 deletions
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10
arch/powerpc/kernel/ptrace.c
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@ -218,7 +218,7 @@ static int fpr_get(struct task_struct *target, const struct user_regset *regset,
flush_fp_to_thread(target);
BUILD_BUG_ON(offsetof(struct thread_struct, fpscr) !=
offsetof(struct thread_struct, fpr[32]));
offsetof(struct thread_struct, TS_FPR(32)));
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.fpr, 0, -1);
@ -231,7 +231,7 @@ static int fpr_set(struct task_struct *target, const struct user_regset *regset,
flush_fp_to_thread(target);
BUILD_BUG_ON(offsetof(struct thread_struct, fpscr) !=
offsetof(struct thread_struct, fpr[32]));
offsetof(struct thread_struct, TS_FPR(32)));
return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
&target->thread.fpr, 0, -1);
@ -728,7 +728,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
tmp = ptrace_get_reg(child, (int) index);
} else {
flush_fp_to_thread(child);
tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0];
tmp = ((unsigned long *)child->thread.fpr)
[TS_FPRWIDTH * (index - PT_FPR0)];
}
ret = put_user(tmp,(unsigned long __user *) data);
break;
@ -755,7 +756,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
ret = ptrace_put_reg(child, index, data);
} else {
flush_fp_to_thread(child);
((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data;
((unsigned long *)child->thread.fpr)
[TS_FPRWIDTH * (index - PT_FPR0)] = data;
ret = 0;
}
break;