powerpc: move debug registers in a structure

[karo-tx-linux.git] / arch / powerpc / kernel / ptrace.c

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 1ca589c9ec6d5a85433dac34ea590ab379e7144c..aedfd41d354ce5a1708f6f4d42455e1da63fc1f8 100644 (file)
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -855,8 +855,8 @@ void user_enable_single_step(struct task_struct *task)
 
        if (regs != NULL) {
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
-               task->thread.dbcr0 &= ~DBCR0_BT;
-               task->thread.dbcr0 |= DBCR0_IDM | DBCR0_IC;
+               task->thread.debug.dbcr0 &= ~DBCR0_BT;
+               task->thread.debug.dbcr0 |= DBCR0_IDM | DBCR0_IC;
                regs->msr |= MSR_DE;
 #else
                regs->msr &= ~MSR_BE;
@@ -872,8 +872,8 @@ void user_enable_block_step(struct task_struct *task)
 
        if (regs != NULL) {
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
-               task->thread.dbcr0 &= ~DBCR0_IC;
-               task->thread.dbcr0 = DBCR0_IDM | DBCR0_BT;
+               task->thread.debug.dbcr0 &= ~DBCR0_IC;
+               task->thread.debug.dbcr0 = DBCR0_IDM | DBCR0_BT;
                regs->msr |= MSR_DE;
 #else
                regs->msr &= ~MSR_SE;
@@ -895,16 +895,16 @@ void user_disable_single_step(struct task_struct *task)
                 * And, after doing so, if all debug flags are off, turn
                 * off DBCR0(IDM) and MSR(DE) .... Torez
                 */
-               task->thread.dbcr0 &= ~DBCR0_IC;
+               task->thread.debug.dbcr0 &= ~DBCR0_IC;
                /*
                 * Test to see if any of the DBCR_ACTIVE_EVENTS bits are set.
                 */
-               if (!DBCR_ACTIVE_EVENTS(task->thread.dbcr0,
-                                       task->thread.dbcr1)) {
+               if (!DBCR_ACTIVE_EVENTS(task->thread.debug.dbcr0,
+                                       task->thread.debug.dbcr1)) {
                        /*
                         * All debug events were off.....
                         */
-                       task->thread.dbcr0 &= ~DBCR0_IDM;
+                       task->thread.debug.dbcr0 &= ~DBCR0_IDM;
                        regs->msr &= ~MSR_DE;
                }
 #else
@@ -1023,14 +1023,14 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
         */
 
        /* DAC's hold the whole address without any mode flags */
-       task->thread.dac1 = data & ~0x3UL;
+       task->thread.debug.dac1 = data & ~0x3UL;
 
-       if (task->thread.dac1 == 0) {
+       if (task->thread.debug.dac1 == 0) {
                dbcr_dac(task) &= ~(DBCR_DAC1R | DBCR_DAC1W);
-               if (!DBCR_ACTIVE_EVENTS(task->thread.dbcr0,
-                                       task->thread.dbcr1)) {
+               if (!DBCR_ACTIVE_EVENTS(task->thread.debug.dbcr0,
+                                       task->thread.debug.dbcr1)) {
                        task->thread.regs->msr &= ~MSR_DE;
-                       task->thread.dbcr0 &= ~DBCR0_IDM;
+                       task->thread.debug.dbcr0 &= ~DBCR0_IDM;
                }
                return 0;
        }
@@ -1042,7 +1042,7 @@ int ptrace_set_debugreg(struct task_struct *task, unsigned long addr,
 
        /* Set the Internal Debugging flag (IDM bit 1) for the DBCR0
           register */
-       task->thread.dbcr0 |= DBCR0_IDM;
+       task->thread.debug.dbcr0 |= DBCR0_IDM;
 
        /* Check for write and read flags and set DBCR0
           accordingly */
@@ -1072,10 +1072,10 @@ static long set_instruction_bp(struct task_struct *child,
                              struct ppc_hw_breakpoint *bp_info)
 {
        int slot;
-       int slot1_in_use = ((child->thread.dbcr0 & DBCR0_IAC1) != 0);
-       int slot2_in_use = ((child->thread.dbcr0 & DBCR0_IAC2) != 0);
-       int slot3_in_use = ((child->thread.dbcr0 & DBCR0_IAC3) != 0);
-       int slot4_in_use = ((child->thread.dbcr0 & DBCR0_IAC4) != 0);
+       int slot1_in_use = ((child->thread.debug.dbcr0 & DBCR0_IAC1) != 0);
+       int slot2_in_use = ((child->thread.debug.dbcr0 & DBCR0_IAC2) != 0);
+       int slot3_in_use = ((child->thread.debug.dbcr0 & DBCR0_IAC3) != 0);
+       int slot4_in_use = ((child->thread.debug.dbcr0 & DBCR0_IAC4) != 0);
 
        if (dbcr_iac_range(child) & DBCR_IAC12MODE)
                slot2_in_use = 1;
@@ -1094,9 +1094,9 @@ static long set_instruction_bp(struct task_struct *child,
                /* We need a pair of IAC regsisters */
                if ((!slot1_in_use) && (!slot2_in_use)) {
                        slot = 1;
-                       child->thread.iac1 = bp_info->addr;
-                       child->thread.iac2 = bp_info->addr2;
-                       child->thread.dbcr0 |= DBCR0_IAC1;
+                       child->thread.debug.iac1 = bp_info->addr;
+                       child->thread.debug.iac2 = bp_info->addr2;
+                       child->thread.debug.dbcr0 |= DBCR0_IAC1;
                        if (bp_info->addr_mode ==
                                        PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
                                dbcr_iac_range(child) |= DBCR_IAC12X;
@@ -1105,9 +1105,9 @@ static long set_instruction_bp(struct task_struct *child,
 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
                } else if ((!slot3_in_use) && (!slot4_in_use)) {
                        slot = 3;
-                       child->thread.iac3 = bp_info->addr;
-                       child->thread.iac4 = bp_info->addr2;
-                       child->thread.dbcr0 |= DBCR0_IAC3;
+                       child->thread.debug.iac3 = bp_info->addr;
+                       child->thread.debug.iac4 = bp_info->addr2;
+                       child->thread.debug.dbcr0 |= DBCR0_IAC3;
                        if (bp_info->addr_mode ==
                                        PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
                                dbcr_iac_range(child) |= DBCR_IAC34X;
@@ -1127,30 +1127,30 @@ static long set_instruction_bp(struct task_struct *child,
                         */
                        if (slot2_in_use || (slot3_in_use == slot4_in_use)) {
                                slot = 1;
-                               child->thread.iac1 = bp_info->addr;
-                               child->thread.dbcr0 |= DBCR0_IAC1;
+                               child->thread.debug.iac1 = bp_info->addr;
+                               child->thread.debug.dbcr0 |= DBCR0_IAC1;
                                goto out;
                        }
                }
                if (!slot2_in_use) {
                        slot = 2;
-                       child->thread.iac2 = bp_info->addr;
-                       child->thread.dbcr0 |= DBCR0_IAC2;
+                       child->thread.debug.iac2 = bp_info->addr;
+                       child->thread.debug.dbcr0 |= DBCR0_IAC2;
 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
                } else if (!slot3_in_use) {
                        slot = 3;
-                       child->thread.iac3 = bp_info->addr;
-                       child->thread.dbcr0 |= DBCR0_IAC3;
+                       child->thread.debug.iac3 = bp_info->addr;
+                       child->thread.debug.dbcr0 |= DBCR0_IAC3;
                } else if (!slot4_in_use) {
                        slot = 4;
-                       child->thread.iac4 = bp_info->addr;
-                       child->thread.dbcr0 |= DBCR0_IAC4;
+                       child->thread.debug.iac4 = bp_info->addr;
+                       child->thread.debug.dbcr0 |= DBCR0_IAC4;
 #endif
                } else
                        return -ENOSPC;
        }
 out:
-       child->thread.dbcr0 |= DBCR0_IDM;
+       child->thread.debug.dbcr0 |= DBCR0_IDM;
        child->thread.regs->msr |= MSR_DE;
 
        return slot;
@@ -1160,49 +1160,49 @@ static int del_instruction_bp(struct task_struct *child, int slot)
 {
        switch (slot) {
        case 1:
-               if ((child->thread.dbcr0 & DBCR0_IAC1) == 0)
+               if ((child->thread.debug.dbcr0 & DBCR0_IAC1) == 0)
                        return -ENOENT;
 
                if (dbcr_iac_range(child) & DBCR_IAC12MODE) {
                        /* address range - clear slots 1 & 2 */
-                       child->thread.iac2 = 0;
+                       child->thread.debug.iac2 = 0;
                        dbcr_iac_range(child) &= ~DBCR_IAC12MODE;
                }
-               child->thread.iac1 = 0;
-               child->thread.dbcr0 &= ~DBCR0_IAC1;
+               child->thread.debug.iac1 = 0;
+               child->thread.debug.dbcr0 &= ~DBCR0_IAC1;
                break;
        case 2:
-               if ((child->thread.dbcr0 & DBCR0_IAC2) == 0)
+               if ((child->thread.debug.dbcr0 & DBCR0_IAC2) == 0)
                        return -ENOENT;
 
                if (dbcr_iac_range(child) & DBCR_IAC12MODE)
                        /* used in a range */
                        return -EINVAL;
-               child->thread.iac2 = 0;
-               child->thread.dbcr0 &= ~DBCR0_IAC2;
+               child->thread.debug.iac2 = 0;
+               child->thread.debug.dbcr0 &= ~DBCR0_IAC2;
                break;
 #if CONFIG_PPC_ADV_DEBUG_IACS > 2
        case 3:
-               if ((child->thread.dbcr0 & DBCR0_IAC3) == 0)
+               if ((child->thread.debug.dbcr0 & DBCR0_IAC3) == 0)
                        return -ENOENT;
 
                if (dbcr_iac_range(child) & DBCR_IAC34MODE) {
                        /* address range - clear slots 3 & 4 */
-                       child->thread.iac4 = 0;
+                       child->thread.debug.iac4 = 0;
                        dbcr_iac_range(child) &= ~DBCR_IAC34MODE;
                }
-               child->thread.iac3 = 0;
-               child->thread.dbcr0 &= ~DBCR0_IAC3;
+               child->thread.debug.iac3 = 0;
+               child->thread.debug.dbcr0 &= ~DBCR0_IAC3;
                break;
        case 4:
-               if ((child->thread.dbcr0 & DBCR0_IAC4) == 0)
+               if ((child->thread.debug.dbcr0 & DBCR0_IAC4) == 0)
                        return -ENOENT;
 
                if (dbcr_iac_range(child) & DBCR_IAC34MODE)
                        /* Used in a range */
                        return -EINVAL;
-               child->thread.iac4 = 0;
-               child->thread.dbcr0 &= ~DBCR0_IAC4;
+               child->thread.debug.iac4 = 0;
+               child->thread.debug.dbcr0 &= ~DBCR0_IAC4;
                break;
 #endif
        default:
@@ -1232,18 +1232,18 @@ static int set_dac(struct task_struct *child, struct ppc_hw_breakpoint *bp_info)
                        dbcr_dac(child) |= DBCR_DAC1R;
                if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
                        dbcr_dac(child) |= DBCR_DAC1W;
-               child->thread.dac1 = (unsigned long)bp_info->addr;
+               child->thread.debug.dac1 = (unsigned long)bp_info->addr;
 #if CONFIG_PPC_ADV_DEBUG_DVCS > 0
                if (byte_enable) {
-                       child->thread.dvc1 =
+                       child->thread.debug.dvc1 =
                                (unsigned long)bp_info->condition_value;
-                       child->thread.dbcr2 |=
+                       child->thread.debug.dbcr2 |=
                                ((byte_enable << DBCR2_DVC1BE_SHIFT) |
                                 (condition_mode << DBCR2_DVC1M_SHIFT));
                }
 #endif
 #ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
-       } else if (child->thread.dbcr2 & DBCR2_DAC12MODE) {
+       } else if (child->thread.debug.dbcr2 & DBCR2_DAC12MODE) {
                /* Both dac1 and dac2 are part of a range */
                return -ENOSPC;
 #endif
@@ -1253,19 +1253,19 @@ static int set_dac(struct task_struct *child, struct ppc_hw_breakpoint *bp_info)
                        dbcr_dac(child) |= DBCR_DAC2R;
                if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
                        dbcr_dac(child) |= DBCR_DAC2W;
-               child->thread.dac2 = (unsigned long)bp_info->addr;
+               child->thread.debug.dac2 = (unsigned long)bp_info->addr;
 #if CONFIG_PPC_ADV_DEBUG_DVCS > 0
                if (byte_enable) {
-                       child->thread.dvc2 =
+                       child->thread.debug.dvc2 =
                                (unsigned long)bp_info->condition_value;
-                       child->thread.dbcr2 |=
+                       child->thread.debug.dbcr2 |=
                                ((byte_enable << DBCR2_DVC2BE_SHIFT) |
                                 (condition_mode << DBCR2_DVC2M_SHIFT));
                }
 #endif
        } else
                return -ENOSPC;
-       child->thread.dbcr0 |= DBCR0_IDM;
+       child->thread.debug.dbcr0 |= DBCR0_IDM;
        child->thread.regs->msr |= MSR_DE;
 
        return slot + 4;
@@ -1277,32 +1277,32 @@ static int del_dac(struct task_struct *child, int slot)
                if ((dbcr_dac(child) & (DBCR_DAC1R | DBCR_DAC1W)) == 0)
                        return -ENOENT;
 
-               child->thread.dac1 = 0;
+               child->thread.debug.dac1 = 0;
                dbcr_dac(child) &= ~(DBCR_DAC1R | DBCR_DAC1W);
 #ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
-               if (child->thread.dbcr2 & DBCR2_DAC12MODE) {
-                       child->thread.dac2 = 0;
-                       child->thread.dbcr2 &= ~DBCR2_DAC12MODE;
+               if (child->thread.debug.dbcr2 & DBCR2_DAC12MODE) {
+                       child->thread.debug.dac2 = 0;
+                       child->thread.debug.dbcr2 &= ~DBCR2_DAC12MODE;
                }
-               child->thread.dbcr2 &= ~(DBCR2_DVC1M | DBCR2_DVC1BE);
+               child->thread.debug.dbcr2 &= ~(DBCR2_DVC1M | DBCR2_DVC1BE);
 #endif
 #if CONFIG_PPC_ADV_DEBUG_DVCS > 0
-               child->thread.dvc1 = 0;
+               child->thread.debug.dvc1 = 0;
 #endif
        } else if (slot == 2) {
                if ((dbcr_dac(child) & (DBCR_DAC2R | DBCR_DAC2W)) == 0)
                        return -ENOENT;
 
 #ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE
-               if (child->thread.dbcr2 & DBCR2_DAC12MODE)
+               if (child->thread.debug.dbcr2 & DBCR2_DAC12MODE)
                        /* Part of a range */
                        return -EINVAL;
-               child->thread.dbcr2 &= ~(DBCR2_DVC2M | DBCR2_DVC2BE);
+               child->thread.debug.dbcr2 &= ~(DBCR2_DVC2M | DBCR2_DVC2BE);
 #endif
 #if CONFIG_PPC_ADV_DEBUG_DVCS > 0
-               child->thread.dvc2 = 0;
+               child->thread.debug.dvc2 = 0;
 #endif
-               child->thread.dac2 = 0;
+               child->thread.debug.dac2 = 0;
                dbcr_dac(child) &= ~(DBCR_DAC2R | DBCR_DAC2W);
        } else
                return -EINVAL;
@@ -1344,22 +1344,22 @@ static int set_dac_range(struct task_struct *child,
                        return -EIO;
        }
 
-       if (child->thread.dbcr0 &
+       if (child->thread.debug.dbcr0 &
            (DBCR0_DAC1R | DBCR0_DAC1W | DBCR0_DAC2R | DBCR0_DAC2W))
                return -ENOSPC;
 
        if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
-               child->thread.dbcr0 |= (DBCR0_DAC1R | DBCR0_IDM);
+               child->thread.debug.dbcr0 |= (DBCR0_DAC1R | DBCR0_IDM);
        if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
-               child->thread.dbcr0 |= (DBCR0_DAC1W | DBCR0_IDM);
-       child->thread.dac1 = bp_info->addr;
-       child->thread.dac2 = bp_info->addr2;
+               child->thread.debug.dbcr0 |= (DBCR0_DAC1W | DBCR0_IDM);
+       child->thread.debug.dac1 = bp_info->addr;
+       child->thread.debug.dac2 = bp_info->addr2;
        if (mode == PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE)
-               child->thread.dbcr2  |= DBCR2_DAC12M;
+               child->thread.debug.dbcr2  |= DBCR2_DAC12M;
        else if (mode == PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE)
-               child->thread.dbcr2  |= DBCR2_DAC12MX;
+               child->thread.debug.dbcr2  |= DBCR2_DAC12MX;
        else    /* PPC_BREAKPOINT_MODE_MASK */
-               child->thread.dbcr2  |= DBCR2_DAC12MM;
+               child->thread.debug.dbcr2  |= DBCR2_DAC12MM;
        child->thread.regs->msr |= MSR_DE;
 
        return 5;
@@ -1490,9 +1490,9 @@ static long ppc_del_hwdebug(struct task_struct *child, long data)
                rc = del_dac(child, (int)data - 4);
 
        if (!rc) {
-               if (!DBCR_ACTIVE_EVENTS(child->thread.dbcr0,
-                                       child->thread.dbcr1)) {
-                       child->thread.dbcr0 &= ~DBCR0_IDM;
+               if (!DBCR_ACTIVE_EVENTS(child->thread.debug.dbcr0,
+                                       child->thread.debug.dbcr1)) {
+                       child->thread.debug.dbcr0 &= ~DBCR0_IDM;
                        child->thread.regs->msr &= ~MSR_DE;
                }
        }
@@ -1670,7 +1670,7 @@ long arch_ptrace(struct task_struct *child, long request,
                if (addr > 0)
                        break;
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
-               ret = put_user(child->thread.dac1, datalp);
+               ret = put_user(child->thread.debug.dac1, datalp);
 #else
                dabr_fake = ((child->thread.hw_brk.address & (~HW_BRK_TYPE_DABR)) |
                             (child->thread.hw_brk.type & HW_BRK_TYPE_DABR));