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[SPARC32]: Use regsets in arch_ptrace(). 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-02-07 05:06:51 -08:00
parent 9473272af3
commit d256eb8db6
1 changed files with 46 additions and 67 deletions
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113
arch/sparc/kernel/ptrace.c
View File

@ -322,54 +322,39 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
int i, ret;
const struct user_regset_view *view;
int ret;
view = task_user_regset_view(child);
switch(request) {
case PTRACE_GETREGS: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = child->thread.kregs;
ret = -EFAULT;
if (!access_ok(VERIFY_WRITE, pregs, sizeof(struct pt_regs)))
break;
__put_user(cregs->psr, (&pregs->psr));
__put_user(cregs->pc, (&pregs->pc));
__put_user(cregs->npc, (&pregs->npc));
__put_user(cregs->y, (&pregs->y));
for (i = 1; i < 16; i++)
__put_user(cregs->u_regs[i], &pregs->u_regs[i - 1]);
ret = 0;
ret = copy_regset_to_user(child, view, REGSET_GENERAL,
32 * sizeof(u32),
4 * sizeof(u32),
&pregs->psr);
if (!ret)
copy_regset_to_user(child, view, REGSET_GENERAL,
1 * sizeof(u32),
15 * sizeof(u32),
&pregs->u_regs[0]);
break;
}
case PTRACE_SETREGS: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
struct pt_regs *cregs = child->thread.kregs;
unsigned long psr, pc, npc, y;
/* Must be careful, tracing process can only set certain
* bits in the psr.
*/
ret = -EFAULT;
if (!access_ok(VERIFY_READ, pregs, sizeof(struct pt_regs)))
break;
__get_user(psr, (&pregs->psr));
__get_user(pc, (&pregs->pc));
__get_user(npc, (&pregs->npc));
__get_user(y, (&pregs->y));
psr &= PSR_ICC;
cregs->psr &= ~PSR_ICC;
cregs->psr |= psr;
if (!((pc | npc) & 3)) {
cregs->pc = pc;
cregs->npc =npc;
}
cregs->y = y;
for (i = 1; i < 16; i++)
__get_user(cregs->u_regs[i], &pregs->u_regs[i-1]);
ret = 0;
ret = copy_regset_from_user(child, view, REGSET_GENERAL,
32 * sizeof(u32),
4 * sizeof(u32),
&pregs->psr);
if (!ret)
copy_regset_from_user(child, view, REGSET_GENERAL,
1 * sizeof(u32),
15 * sizeof(u32),
&pregs->u_regs[0]);
break;
}
@ -387,23 +372,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
};
struct fps __user *fps = (struct fps __user *) addr;
ret = -EFAULT;
if (!access_ok(VERIFY_WRITE, fps, sizeof(struct fps)))
break;
ret = copy_regset_to_user(child, view, REGSET_FP,
0 * sizeof(u32),
32 * sizeof(u32),
&fps->regs[0]);
if (!ret)
ret = copy_regset_to_user(child, view, REGSET_FP,
33 * sizeof(u32),
1 * sizeof(u32),
&fps->fsr);
for (i = 0; i < 32; i++)
__put_user(child->thread.float_regs[i], &fps->regs[i]);
__put_user(child->thread.fsr, (&fps->fsr));
__put_user(child->thread.fpqdepth, (&fps->fpqd));
__put_user(0, (&fps->flags));
__put_user(0, (&fps->extra));
for (i = 0; i < 16; i++) {
__put_user(child->thread.fpqueue[i].insn_addr,
(&fps->fpq[i].insnaddr));
__put_user(child->thread.fpqueue[i].insn,
&fps->fpq[i].insn);
if (!ret) {
if (__put_user(0, &fps->fpqd) ||
__put_user(0, &fps->flags) ||
__put_user(0, &fps->extra) ||
clear_user(fps->fpq, sizeof(fps->fpq)))
ret = -EFAULT;
}
ret = 0;
break;
}
@ -421,21 +406,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
};
struct fps __user *fps = (struct fps __user *) addr;
ret = -EFAULT;
if (!access_ok(VERIFY_READ, fps, sizeof(struct fps)))
break;
copy_from_user(&child->thread.float_regs[0], &fps->regs[0],
(32 * sizeof(unsigned long)));
__get_user(child->thread.fsr, (&fps->fsr));
__get_user(child->thread.fpqdepth, (&fps->fpqd));
for (i = 0; i < 16; i++) {
__get_user(child->thread.fpqueue[i].insn_addr,
(&fps->fpq[i].insnaddr));
__get_user(child->thread.fpqueue[i].insn,
&fps->fpq[i].insn);
}
ret = 0;
ret = copy_regset_from_user(child, view, REGSET_FP,
0 * sizeof(u32),
32 * sizeof(u32),
&fps->regs[0]);
if (!ret)
ret = copy_regset_from_user(child, view, REGSET_FP,
33 * sizeof(u32),
1 * sizeof(u32),
&fps->fsr);
break;
}