summaryrefslogtreecommitdiffstats
path: root/arch/sparc64/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/sparc64/kernel')
-rw-r--r--arch/sparc64/kernel/ptrace.c209
1 files changed, 77 insertions, 132 deletions
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 7e28ee36419..51f012410f9 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -687,11 +687,14 @@ 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)
{
long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
- int i, ret;
+ const struct user_regset_view *view;
+ int ret;
if (test_thread_flag(TIF_32BIT))
addr2 &= 0xffffffffUL;
+ view = task_user_regset_view(child);
+
switch(request) {
case PTRACE_PEEKUSR:
ret = (addr != 0) ? -EIO : 0;
@@ -746,111 +749,66 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
case PTRACE_GETREGS: {
struct pt_regs32 __user *pregs =
(struct pt_regs32 __user *) addr;
- struct pt_regs *cregs = task_pt_regs(child);
- ret = -EFAULT;
- if (__put_user(tstate_to_psr(cregs->tstate), (&pregs->psr)) ||
- __put_user(cregs->tpc, (&pregs->pc)) ||
- __put_user(cregs->tnpc, (&pregs->npc)) ||
- __put_user(cregs->y, (&pregs->y)))
- break;
- for (i = 1; i < 16; i++) {
- if (__put_user(cregs->u_regs[i],
- (&pregs->u_regs[i - 1])))
- break;
- }
- if (i == 16)
- ret = 0;
+ ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+ 32 * sizeof(u32),
+ 4 * sizeof(u32),
+ &pregs->psr);
+ if (!ret)
+ ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+ 1 * sizeof(u32),
+ 15 * sizeof(u32),
+ &pregs->u_regs[0]);
break;
}
case PTRACE_GETREGS64: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
- struct pt_regs *cregs = task_pt_regs(child);
- unsigned long tpc = cregs->tpc;
-
- if ((task_thread_info(child)->flags & _TIF_32BIT) != 0)
- tpc &= 0xffffffff;
- ret = -EFAULT;
- if (__put_user(cregs->tstate, (&pregs->tstate)) ||
- __put_user(tpc, (&pregs->tpc)) ||
- __put_user(cregs->tnpc, (&pregs->tnpc)) ||
- __put_user(cregs->y, (&pregs->y)))
- break;
- for (i = 1; i < 16; i++) {
- if (__put_user(cregs->u_regs[i],
- (&pregs->u_regs[i - 1])))
- break;
+ ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+ 1 * sizeof(u64),
+ 15 * sizeof(u64),
+ &pregs->u_regs[0]);
+ if (!ret) {
+ /* XXX doesn't handle 'y' register correctly XXX */
+ ret = copy_regset_to_user(child, view, REGSET_GENERAL,
+ 32 * sizeof(u64),
+ 4 * sizeof(u64),
+ &pregs->tstate);
}
- if (i == 16)
- ret = 0;
break;
}
case PTRACE_SETREGS: {
struct pt_regs32 __user *pregs =
(struct pt_regs32 __user *) addr;
- struct pt_regs *cregs = task_pt_regs(child);
- unsigned int psr, pc, npc, y;
-
- /* Must be careful, tracing process can only set certain
- * bits in the psr.
- */
- ret = -EFAULT;
- if (__get_user(psr, (&pregs->psr)) ||
- __get_user(pc, (&pregs->pc)) ||
- __get_user(npc, (&pregs->npc)) ||
- __get_user(y, (&pregs->y)))
- break;
- cregs->tstate &= ~(TSTATE_ICC);
- cregs->tstate |= psr_to_tstate_icc(psr);
- if (!((pc | npc) & 3)) {
- cregs->tpc = pc;
- cregs->tnpc = npc;
- }
- cregs->y = y;
- for (i = 1; i < 16; i++) {
- if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1])))
- break;
- }
- if (i == 16)
- ret = 0;
+
+ ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+ 32 * sizeof(u32),
+ 4 * sizeof(u32),
+ &pregs->psr);
+ if (!ret)
+ ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+ 1 * sizeof(u32),
+ 15 * sizeof(u32),
+ &pregs->u_regs[0]);
break;
}
case PTRACE_SETREGS64: {
struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
- struct pt_regs *cregs = task_pt_regs(child);
- unsigned long tstate, tpc, tnpc, y;
-
- /* Must be careful, tracing process can only set certain
- * bits in the psr.
- */
- ret = -EFAULT;
- if (__get_user(tstate, (&pregs->tstate)) ||
- __get_user(tpc, (&pregs->tpc)) ||
- __get_user(tnpc, (&pregs->tnpc)) ||
- __get_user(y, (&pregs->y)))
- break;
- if ((task_thread_info(child)->flags & _TIF_32BIT) != 0) {
- tpc &= 0xffffffff;
- tnpc &= 0xffffffff;
- }
- tstate &= (TSTATE_ICC | TSTATE_XCC);
- cregs->tstate &= ~(TSTATE_ICC | TSTATE_XCC);
- cregs->tstate |= tstate;
- if (!((tpc | tnpc) & 3)) {
- cregs->tpc = tpc;
- cregs->tnpc = tnpc;
- }
- cregs->y = y;
- for (i = 1; i < 16; i++) {
- if (__get_user(cregs->u_regs[i], (&pregs->u_regs[i-1])))
- break;
+
+ ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+ 1 * sizeof(u64),
+ 15 * sizeof(u64),
+ &pregs->u_regs[0]);
+ if (!ret) {
+ /* XXX doesn't handle 'y' register correctly XXX */
+ ret = copy_regset_from_user(child, view, REGSET_GENERAL,
+ 32 * sizeof(u64),
+ 4 * sizeof(u64),
+ &pregs->tstate);
}
- if (i == 16)
- ret = 0;
break;
}
@@ -867,19 +825,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
} fpq[16];
};
struct fps __user *fps = (struct fps __user *) addr;
- unsigned long *fpregs = task_thread_info(child)->fpregs;
-
- ret = -EFAULT;
- if (copy_to_user(&fps->regs[0], fpregs,
- (32 * sizeof(unsigned int))) ||
- __put_user(task_thread_info(child)->xfsr[0], (&fps->fsr)) ||
- __put_user(0, (&fps->fpqd)) ||
- __put_user(0, (&fps->flags)) ||
- __put_user(0, (&fps->extra)) ||
- clear_user(&fps->fpq[0], 32 * sizeof(unsigned int)))
- break;
- ret = 0;
+ 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);
+ if (!ret) {
+ if (__put_user(0, &fps->flags) ||
+ __put_user(0, &fps->extra) ||
+ __put_user(0, &fps->fpqd) ||
+ clear_user(&fps->fpq[0], 32 * sizeof(unsigned int)))
+ ret = -EFAULT;
+ }
break;
}
@@ -889,15 +851,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
unsigned long fsr;
};
struct fps __user *fps = (struct fps __user *) addr;
- unsigned long *fpregs = task_thread_info(child)->fpregs;
- ret = -EFAULT;
- if (copy_to_user(&fps->regs[0], fpregs,
- (64 * sizeof(unsigned int))) ||
- __put_user(task_thread_info(child)->xfsr[0], (&fps->fsr)))
- break;
-
- ret = 0;
+ ret = copy_regset_to_user(child, view, REGSET_FP,
+ 0 * sizeof(u64),
+ 33 * sizeof(u64),
+ fps);
break;
}
@@ -914,21 +872,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
} fpq[16];
};
struct fps __user *fps = (struct fps __user *) addr;
- unsigned long *fpregs = task_thread_info(child)->fpregs;
- unsigned fsr;
-
- ret = -EFAULT;
- if (copy_from_user(fpregs, &fps->regs[0],
- (32 * sizeof(unsigned int))) ||
- __get_user(fsr, (&fps->fsr)))
- break;
- task_thread_info(child)->xfsr[0] &= 0xffffffff00000000UL;
- task_thread_info(child)->xfsr[0] |= fsr;
- if (!(task_thread_info(child)->fpsaved[0] & FPRS_FEF))
- task_thread_info(child)->gsr[0] = 0;
- task_thread_info(child)->fpsaved[0] |= (FPRS_FEF | FPRS_DL);
- 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;
}
@@ -938,19 +891,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
unsigned long fsr;
};
struct fps __user *fps = (struct fps __user *) addr;
- unsigned long *fpregs = task_thread_info(child)->fpregs;
-
- ret = -EFAULT;
- if (copy_from_user(fpregs, &fps->regs[0],
- (64 * sizeof(unsigned int))) ||
- __get_user(task_thread_info(child)->xfsr[0], (&fps->fsr)))
- break;
- if (!(task_thread_info(child)->fpsaved[0] & FPRS_FEF))
- task_thread_info(child)->gsr[0] = 0;
- task_thread_info(child)->fpsaved[0] |=
- (FPRS_FEF | FPRS_DL | FPRS_DU);
- ret = 0;
+ ret = copy_regset_to_user(child, view, REGSET_FP,
+ 0 * sizeof(u64),
+ 33 * sizeof(u64),
+ fps);
break;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 05:04:04 +0000