#include <asm/spitfire.h>
#include <asm/page.h>
#include <asm/cpudata.h>
+#include <asm/cacheflush.h>
+
+#include "entry.h"
/* #define ALLOW_INIT_TRACING */
if (tlb_type == hypervisor)
return;
+ preempt_disable();
+
#ifdef DCACHE_ALIASING_POSSIBLE
/* If bit 13 of the kernel address we used to access the
* user page is the same as the virtual address that page
for (; start < end; start += icache_line_size)
flushi(start);
}
+
+ preempt_enable();
+}
+
+static int get_from_target(struct task_struct *target, unsigned long uaddr,
+ void *kbuf, int len)
+{
+ if (target == current) {
+ if (copy_from_user(kbuf, (void __user *) uaddr, len))
+ return -EFAULT;
+ } else {
+ int len2 = access_process_vm(target, uaddr, kbuf, len, 0);
+ if (len2 != len)
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static int set_to_target(struct task_struct *target, unsigned long uaddr,
+ void *kbuf, int len)
+{
+ if (target == current) {
+ if (copy_to_user((void __user *) uaddr, kbuf, len))
+ return -EFAULT;
+ } else {
+ int len2 = access_process_vm(target, uaddr, kbuf, len, 1);
+ if (len2 != len)
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static int regwindow64_get(struct task_struct *target,
+ const struct pt_regs *regs,
+ struct reg_window *wbuf)
+{
+ unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+ if (test_tsk_thread_flag(current, TIF_32BIT)) {
+ struct reg_window32 win32;
+ int i;
+
+ if (get_from_target(target, rw_addr, &win32, sizeof(win32)))
+ return -EFAULT;
+ for (i = 0; i < 8; i++)
+ wbuf->locals[i] = win32.locals[i];
+ for (i = 0; i < 8; i++)
+ wbuf->ins[i] = win32.ins[i];
+ } else {
+ rw_addr += STACK_BIAS;
+ if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static int regwindow64_set(struct task_struct *target,
+ const struct pt_regs *regs,
+ struct reg_window *wbuf)
+{
+ unsigned long rw_addr = regs->u_regs[UREG_I6];
+
+ if (test_tsk_thread_flag(current, TIF_32BIT)) {
+ struct reg_window32 win32;
+ int i;
+
+ for (i = 0; i < 8; i++)
+ win32.locals[i] = wbuf->locals[i];
+ for (i = 0; i < 8; i++)
+ win32.ins[i] = wbuf->ins[i];
+
+ if (set_to_target(target, rw_addr, &win32, sizeof(win32)))
+ return -EFAULT;
+ } else {
+ rw_addr += STACK_BIAS;
+ if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf)))
+ return -EFAULT;
+ }
+
+ return 0;
}
enum sparc_regset {
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
regs->u_regs,
0, 16 * sizeof(u64));
- if (!ret) {
- unsigned long __user *reg_window = (unsigned long __user *)
- (regs->u_regs[UREG_I6] + STACK_BIAS);
- unsigned long window[16];
+ if (!ret && count && pos < (32 * sizeof(u64))) {
+ struct reg_window window;
- if (copy_from_user(window, reg_window, sizeof(window)))
+ if (regwindow64_get(target, regs, &window))
return -EFAULT;
-
ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- window,
+ &window,
16 * sizeof(u64),
32 * sizeof(u64));
}
36 * sizeof(u64));
}
- if (!ret)
+ if (!ret) {
ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
36 * sizeof(u64), -1);
+ }
return ret;
}
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
regs->u_regs,
0, 16 * sizeof(u64));
- if (!ret && count > 0) {
- unsigned long __user *reg_window = (unsigned long __user *)
- (regs->u_regs[UREG_I6] + STACK_BIAS);
- unsigned long window[16];
+ if (!ret && count && pos < (32 * sizeof(u64))) {
+ struct reg_window window;
- if (copy_from_user(window, reg_window, sizeof(window)))
+ if (regwindow64_get(target, regs, &window))
return -EFAULT;
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- window,
+ &window,
16 * sizeof(u64),
32 * sizeof(u64));
+
if (!ret &&
- copy_to_user(reg_window, window, sizeof(window)))
+ regwindow64_set(target, regs, &window))
return -EFAULT;
}
.regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
};
+#ifdef CONFIG_COMPAT
static int genregs32_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
*k++ = regs->u_regs[pos++];
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
- for (; count > 0 && pos < 32; count--) {
- if (get_user(*k++, ®_window[pos++]))
- return -EFAULT;
+ if (target == current) {
+ for (; count > 0 && pos < 32; count--) {
+ if (get_user(*k++, ®_window[pos++]))
+ return -EFAULT;
+ }
+ } else {
+ for (; count > 0 && pos < 32; count--) {
+ if (access_process_vm(target,
+ (unsigned long)
+ ®_window[pos],
+ k, sizeof(*k), 0)
+ != sizeof(*k))
+ return -EFAULT;
+ k++;
+ pos++;
+ }
}
} else {
for (; count > 0 && pos < 16; count--) {
}
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
- for (; count > 0 && pos < 32; count--) {
- if (get_user(reg, ®_window[pos++]) ||
- put_user(reg, u++))
- return -EFAULT;
+ if (target == current) {
+ for (; count > 0 && pos < 32; count--) {
+ if (get_user(reg, ®_window[pos++]) ||
+ put_user(reg, u++))
+ return -EFAULT;
+ }
+ } else {
+ for (; count > 0 && pos < 32; count--) {
+ if (access_process_vm(target,
+ (unsigned long)
+ ®_window[pos],
+ ®, sizeof(reg), 0)
+ != sizeof(reg))
+ return -EFAULT;
+ if (access_process_vm(target,
+ (unsigned long) u,
+ ®, sizeof(reg), 1)
+ != sizeof(reg))
+ return -EFAULT;
+ pos++;
+ u++;
+ }
}
}
while (count > 0) {
regs->u_regs[pos++] = *k++;
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
- for (; count > 0 && pos < 32; count--) {
- if (put_user(*k++, ®_window[pos++]))
- return -EFAULT;
+ if (target == current) {
+ for (; count > 0 && pos < 32; count--) {
+ if (put_user(*k++, ®_window[pos++]))
+ return -EFAULT;
+ }
+ } else {
+ for (; count > 0 && pos < 32; count--) {
+ if (access_process_vm(target,
+ (unsigned long)
+ ®_window[pos],
+ (void *) k,
+ sizeof(*k), 1)
+ != sizeof(*k))
+ return -EFAULT;
+ k++;
+ pos++;
+ }
}
} else {
for (; count > 0 && pos < 16; count--) {
}
reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6];
- for (; count > 0 && pos < 32; count--) {
- if (get_user(reg, u++) ||
- put_user(reg, ®_window[pos++]))
- return -EFAULT;
+ if (target == current) {
+ for (; count > 0 && pos < 32; count--) {
+ if (get_user(reg, u++) ||
+ put_user(reg, ®_window[pos++]))
+ return -EFAULT;
+ }
+ } else {
+ for (; count > 0 && pos < 32; count--) {
+ if (access_process_vm(target,
+ (unsigned long)
+ u,
+ ®, sizeof(reg), 0)
+ != sizeof(reg))
+ return -EFAULT;
+ if (access_process_vm(target,
+ (unsigned long)
+ ®_window[pos],
+ ®, sizeof(reg), 1)
+ != sizeof(reg))
+ return -EFAULT;
+ pos++;
+ u++;
+ }
}
}
while (count > 0) {
.name = "sparc", .e_machine = EM_SPARC,
.regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
};
+#endif /* CONFIG_COMPAT */
const struct user_regset_view *task_user_regset_view(struct task_struct *task)
{
+#ifdef CONFIG_COMPAT
if (test_tsk_thread_flag(task, TIF_32BIT))
return &user_sparc32_view;
+#endif
return &user_sparc64_view;
}
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+#ifdef CONFIG_COMPAT
+struct compat_fps {
+ unsigned int regs[32];
+ unsigned int fsr;
+ unsigned int flags;
+ unsigned int extra;
+ unsigned int fpqd;
+ struct compat_fq {
+ unsigned int insnaddr;
+ unsigned int insn;
+ } fpq[16];
+};
+
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+ compat_ulong_t caddr, compat_ulong_t cdata)
{
- long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
- const struct user_regset_view *view;
+ const struct user_regset_view *view = task_user_regset_view(current);
+ compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4];
+ struct pt_regs32 __user *pregs;
+ struct compat_fps __user *fps;
+ unsigned long addr2 = caddr2;
+ unsigned long addr = caddr;
+ unsigned long data = cdata;
int ret;
- if (test_thread_flag(TIF_32BIT))
- addr2 &= 0xffffffffUL;
-
- view = task_user_regset_view(child);
+ pregs = (struct pt_regs32 __user *) addr;
+ fps = (struct compat_fps __user *) addr;
- switch(request) {
+ switch (request) {
case PTRACE_PEEKUSR:
ret = (addr != 0) ? -EIO : 0;
break;
- case PTRACE_PEEKTEXT: /* read word at location addr. */
- case PTRACE_PEEKDATA: {
- unsigned long tmp64;
- unsigned int tmp32;
- int copied;
-
- ret = -EIO;
- if (test_thread_flag(TIF_32BIT)) {
- copied = access_process_vm(child, addr,
- &tmp32, sizeof(tmp32), 0);
- if (copied == sizeof(tmp32))
- ret = put_user(tmp32,
- (unsigned int __user *) data);
- } else {
- copied = access_process_vm(child, addr,
- &tmp64, sizeof(tmp64), 0);
- if (copied == sizeof(tmp64))
- ret = put_user(tmp64,
- (unsigned long __user *) data);
- }
- break;
- }
-
- case PTRACE_POKETEXT: /* write the word at location addr. */
- case PTRACE_POKEDATA: {
- unsigned long tmp64;
- unsigned int tmp32;
- int copied;
-
- ret = -EIO;
- if (test_thread_flag(TIF_32BIT)) {
- tmp32 = data;
- copied = access_process_vm(child, addr,
- &tmp32, sizeof(tmp32), 1);
- if (copied == sizeof(tmp32))
- ret = 0;
- } else {
- tmp64 = data;
- copied = access_process_vm(child, addr,
- &tmp64, sizeof(tmp64), 1);
- if (copied == sizeof(tmp64))
- ret = 0;
- }
- break;
- }
-
- case PTRACE_GETREGS: {
- struct pt_regs32 __user *pregs =
- (struct pt_regs32 __user *) addr;
-
+ case PTRACE_GETREGS:
ret = copy_regset_to_user(child, view, REGSET_GENERAL,
32 * sizeof(u32),
4 * sizeof(u32),
15 * sizeof(u32),
&pregs->u_regs[0]);
break;
- }
-
- case PTRACE_GETREGS64: {
- struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
- 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);
- }
- break;
- }
-
- case PTRACE_SETREGS: {
- struct pt_regs32 __user *pregs =
- (struct pt_regs32 __user *) addr;
+ case PTRACE_SETREGS:
ret = copy_regset_from_user(child, view, REGSET_GENERAL,
32 * sizeof(u32),
4 * sizeof(u32),
15 * sizeof(u32),
&pregs->u_regs[0]);
break;
- }
-
- case PTRACE_SETREGS64: {
- struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
- 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);
- }
- break;
- }
-
- case PTRACE_GETFPREGS: {
- struct fps {
- unsigned int regs[32];
- unsigned int fsr;
- unsigned int flags;
- unsigned int extra;
- unsigned int fpqd;
- struct fq {
- unsigned int insnaddr;
- unsigned int insn;
- } fpq[16];
- };
- struct fps __user *fps = (struct fps __user *) addr;
+ case PTRACE_GETFPREGS:
ret = copy_regset_to_user(child, view, REGSET_FP,
0 * sizeof(u32),
32 * sizeof(u32),
ret = -EFAULT;
}
break;
- }
-
- case PTRACE_GETFPREGS64: {
- struct fps {
- unsigned int regs[64];
- unsigned long fsr;
- };
- struct fps __user *fps = (struct fps __user *) addr;
-
- ret = copy_regset_to_user(child, view, REGSET_FP,
- 0 * sizeof(u64),
- 33 * sizeof(u64),
- fps);
- break;
- }
-
- case PTRACE_SETFPREGS: {
- struct fps {
- unsigned int regs[32];
- unsigned int fsr;
- unsigned int flags;
- unsigned int extra;
- unsigned int fpqd;
- struct fq {
- unsigned int insnaddr;
- unsigned int insn;
- } fpq[16];
- };
- struct fps __user *fps = (struct fps __user *) addr;
+ case PTRACE_SETFPREGS:
ret = copy_regset_from_user(child, view, REGSET_FP,
0 * sizeof(u32),
32 * sizeof(u32),
1 * sizeof(u32),
&fps->fsr);
break;
+
+ case PTRACE_READTEXT:
+ case PTRACE_READDATA:
+ ret = ptrace_readdata(child, addr,
+ (char __user *)addr2, data);
+ if (ret == data)
+ ret = 0;
+ else if (ret >= 0)
+ ret = -EIO;
+ break;
+
+ case PTRACE_WRITETEXT:
+ case PTRACE_WRITEDATA:
+ ret = ptrace_writedata(child, (char __user *) addr2,
+ addr, data);
+ if (ret == data)
+ ret = 0;
+ else if (ret >= 0)
+ ret = -EIO;
+ break;
+
+ default:
+ ret = compat_ptrace_request(child, request, addr, data);
+ break;
}
- case PTRACE_SETFPREGS64: {
- struct fps {
- unsigned int regs[64];
- unsigned long fsr;
- };
- struct fps __user *fps = (struct fps __user *) addr;
+ return ret;
+}
+#endif /* CONFIG_COMPAT */
+
+struct fps {
+ unsigned int regs[64];
+ unsigned long fsr;
+};
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+ const struct user_regset_view *view = task_user_regset_view(current);
+ unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
+ struct pt_regs __user *pregs;
+ struct fps __user *fps;
+ int ret;
+
+ pregs = (struct pt_regs __user *) (unsigned long) addr;
+ fps = (struct fps __user *) (unsigned long) addr;
+
+ switch (request) {
+ case PTRACE_PEEKUSR:
+ ret = (addr != 0) ? -EIO : 0;
+ break;
+
+ case PTRACE_GETREGS64:
+ 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);
+ }
+ break;
+
+ case PTRACE_SETREGS64:
+ 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);
+ }
+ break;
+
+ case PTRACE_GETFPREGS64:
+ ret = copy_regset_to_user(child, view, REGSET_FP,
+ 0 * sizeof(u64),
+ 33 * sizeof(u64),
+ fps);
+ break;
+
+ case PTRACE_SETFPREGS64:
ret = copy_regset_to_user(child, view, REGSET_FP,
0 * sizeof(u64),
33 * sizeof(u64),
fps);
break;
- }
case PTRACE_READTEXT:
case PTRACE_READDATA:
ret = -EIO;
break;
- case PTRACE_GETEVENTMSG: {
- if (test_thread_flag(TIF_32BIT))
- ret = put_user(child->ptrace_message,
- (unsigned int __user *) data);
- else
- ret = put_user(child->ptrace_message,
- (unsigned long __user *) data);
- break;
- }
-
default:
ret = ptrace_request(child, request, addr, data);
break;
projects / linux-2.6-omap-h63xx.git / blobdiff