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Diffstat (limited to 'arch/sh/kernel/ptrace_64.c')
-rw-r--r--arch/sh/kernel/ptrace_64.c113
1 files changed, 98 insertions, 15 deletions
diff --git a/arch/sh/kernel/ptrace_64.c b/arch/sh/kernel/ptrace_64.c
index 5fd644da7f0..4436eacddb1 100644
--- a/arch/sh/kernel/ptrace_64.c
+++ b/arch/sh/kernel/ptrace_64.c
@@ -20,7 +20,7 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
+#include <linux/bitops.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
@@ -252,6 +252,85 @@ static int fpregs_active(struct task_struct *target,
}
#endif
+const struct pt_regs_offset regoffset_table[] = {
+ REG_OFFSET_NAME(pc),
+ REG_OFFSET_NAME(sr),
+ REG_OFFSET_NAME(syscall_nr),
+ REGS_OFFSET_NAME(0),
+ REGS_OFFSET_NAME(1),
+ REGS_OFFSET_NAME(2),
+ REGS_OFFSET_NAME(3),
+ REGS_OFFSET_NAME(4),
+ REGS_OFFSET_NAME(5),
+ REGS_OFFSET_NAME(6),
+ REGS_OFFSET_NAME(7),
+ REGS_OFFSET_NAME(8),
+ REGS_OFFSET_NAME(9),
+ REGS_OFFSET_NAME(10),
+ REGS_OFFSET_NAME(11),
+ REGS_OFFSET_NAME(12),
+ REGS_OFFSET_NAME(13),
+ REGS_OFFSET_NAME(14),
+ REGS_OFFSET_NAME(15),
+ REGS_OFFSET_NAME(16),
+ REGS_OFFSET_NAME(17),
+ REGS_OFFSET_NAME(18),
+ REGS_OFFSET_NAME(19),
+ REGS_OFFSET_NAME(20),
+ REGS_OFFSET_NAME(21),
+ REGS_OFFSET_NAME(22),
+ REGS_OFFSET_NAME(23),
+ REGS_OFFSET_NAME(24),
+ REGS_OFFSET_NAME(25),
+ REGS_OFFSET_NAME(26),
+ REGS_OFFSET_NAME(27),
+ REGS_OFFSET_NAME(28),
+ REGS_OFFSET_NAME(29),
+ REGS_OFFSET_NAME(30),
+ REGS_OFFSET_NAME(31),
+ REGS_OFFSET_NAME(32),
+ REGS_OFFSET_NAME(33),
+ REGS_OFFSET_NAME(34),
+ REGS_OFFSET_NAME(35),
+ REGS_OFFSET_NAME(36),
+ REGS_OFFSET_NAME(37),
+ REGS_OFFSET_NAME(38),
+ REGS_OFFSET_NAME(39),
+ REGS_OFFSET_NAME(40),
+ REGS_OFFSET_NAME(41),
+ REGS_OFFSET_NAME(42),
+ REGS_OFFSET_NAME(43),
+ REGS_OFFSET_NAME(44),
+ REGS_OFFSET_NAME(45),
+ REGS_OFFSET_NAME(46),
+ REGS_OFFSET_NAME(47),
+ REGS_OFFSET_NAME(48),
+ REGS_OFFSET_NAME(49),
+ REGS_OFFSET_NAME(50),
+ REGS_OFFSET_NAME(51),
+ REGS_OFFSET_NAME(52),
+ REGS_OFFSET_NAME(53),
+ REGS_OFFSET_NAME(54),
+ REGS_OFFSET_NAME(55),
+ REGS_OFFSET_NAME(56),
+ REGS_OFFSET_NAME(57),
+ REGS_OFFSET_NAME(58),
+ REGS_OFFSET_NAME(59),
+ REGS_OFFSET_NAME(60),
+ REGS_OFFSET_NAME(61),
+ REGS_OFFSET_NAME(62),
+ REGS_OFFSET_NAME(63),
+ TREGS_OFFSET_NAME(0),
+ TREGS_OFFSET_NAME(1),
+ TREGS_OFFSET_NAME(2),
+ TREGS_OFFSET_NAME(3),
+ TREGS_OFFSET_NAME(4),
+ TREGS_OFFSET_NAME(5),
+ TREGS_OFFSET_NAME(6),
+ TREGS_OFFSET_NAME(7),
+ REG_OFFSET_END,
+};
+
/*
* These are our native regset flavours.
*/
@@ -304,9 +383,11 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task)
return &user_sh64_native_view;
}
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+long arch_ptrace(struct task_struct *child, long request,
+ unsigned long addr, unsigned long data)
{
int ret;
+ unsigned long __user *datap = (unsigned long __user *) data;
switch (request) {
/* read the word at location addr in the USER area. */
@@ -321,13 +402,15 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
tmp = get_stack_long(child, addr);
else if ((addr >= offsetof(struct user, fpu)) &&
(addr < offsetof(struct user, u_fpvalid))) {
- tmp = get_fpu_long(child, addr - offsetof(struct user, fpu));
+ unsigned long index;
+ index = addr - offsetof(struct user, fpu);
+ tmp = get_fpu_long(child, index);
} else if (addr == offsetof(struct user, u_fpvalid)) {
tmp = !!tsk_used_math(child);
} else {
break;
}
- ret = put_user(tmp, (unsigned long *)data);
+ ret = put_user(tmp, datap);
break;
}
@@ -358,7 +441,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
}
else if ((addr >= offsetof(struct user, fpu)) &&
(addr < offsetof(struct user, u_fpvalid))) {
- ret = put_fpu_long(child, addr - offsetof(struct user, fpu), data);
+ unsigned long index;
+ index = addr - offsetof(struct user, fpu);
+ ret = put_fpu_long(child, index, data);
}
break;
@@ -366,23 +451,23 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return copy_regset_to_user(child, &user_sh64_native_view,
REGSET_GENERAL,
0, sizeof(struct pt_regs),
- (void __user *)data);
+ datap);
case PTRACE_SETREGS:
return copy_regset_from_user(child, &user_sh64_native_view,
REGSET_GENERAL,
0, sizeof(struct pt_regs),
- (const void __user *)data);
+ datap);
#ifdef CONFIG_SH_FPU
case PTRACE_GETFPREGS:
return copy_regset_to_user(child, &user_sh64_native_view,
REGSET_FPU,
0, sizeof(struct user_fpu_struct),
- (void __user *)data);
+ datap);
case PTRACE_SETFPREGS:
return copy_regset_from_user(child, &user_sh64_native_view,
REGSET_FPU,
0, sizeof(struct user_fpu_struct),
- (const void __user *)data);
+ datap);
#endif
default:
ret = ptrace_request(child, request, addr, data);
@@ -392,13 +477,13 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret;
}
-asmlinkage int sh64_ptrace(long request, long pid, long addr, long data)
+asmlinkage int sh64_ptrace(long request, long pid,
+ unsigned long addr, unsigned long data)
{
#define WPC_DBRMODE 0x0d104008
- static int first_call = 1;
+ static unsigned long first_call;
- lock_kernel();
- if (first_call) {
+ if (!test_and_set_bit(0, &first_call)) {
/* Set WPC.DBRMODE to 0. This makes all debug events get
* delivered through RESVEC, i.e. into the handlers in entry.S.
* (If the kernel was downloaded using a remote gdb, WPC.DBRMODE
@@ -408,9 +493,7 @@ asmlinkage int sh64_ptrace(long request, long pid, long addr, long data)
* the remote gdb.) */
printk("DBRMODE set to 0 to permit native debugging\n");
poke_real_address_q(WPC_DBRMODE, 0);
- first_call = 0;
}
- unlock_kernel();
return sys_ptrace(request, pid, addr, data);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-16 08:07:08 +0000