sparc: Fix debugger syscall restart interactions.
[linux-2.6.git] / arch / sparc64 / kernel / ptrace.c
index b803fe9..f6c9fc9 100644 (file)
@@ -287,11 +287,11 @@ static int genregs64_set(struct task_struct *target,
                                         32 * sizeof(u64),
                                         33 * sizeof(u64));
                if (!ret) {
-                       /* Only the condition codes can be modified
-                        * in the %tstate register.
+                       /* Only the condition codes and the "in syscall"
+                        * state can be modified in the %tstate register.
                         */
-                       tstate &= (TSTATE_ICC | TSTATE_XCC);
-                       regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+                       tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
+                       regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
                        regs->tstate |= tstate;
                }
        }
@@ -657,8 +657,10 @@ static int genregs32_set(struct task_struct *target,
                switch (pos) {
                case 32: /* PSR */
                        tstate = regs->tstate;
-                       tstate &= ~(TSTATE_ICC | TSTATE_XCC);
+                       tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL);
                        tstate |= psr_to_tstate_icc(reg);
+                       if (reg & PSR_SYSCALL)
+                               tstate |= TSTATE_SYSCALL;
                        regs->tstate = tstate;
                        break;
                case 33: /* PC */