Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
  parisc: convert to generic compat_sys_ptrace
  parisc: add rtc platform driver
  parisc: initialize unwinder much earlier
  parisc: add new syscalls
  parisc: hijack jump to start_kernel
  parisc: add pdc_coproc_cfg_unlocked and set_firmware_width_unlocked
  parisc: move include/asm-parisc to arch/parisc/include/asm
  parisc: move pdc_result to real2.S
  parisc: unify CCIO_COLLECT_STATS implementation
  parisc: add arch/parisc/kernel/.gitignore
  parisc: ropes.h - fix <asm-parisc/*> -> <asm/*>
  parisc: parisc-agp - fix <asm-parisc/*> -> <asm/*>

Resolve remove/rename conflict: include/asm-parisc/a.out.h is no longer
relevant.

10 files changed, 290 insertions, 287 deletions

diff --git a/arch/parisc/kernel/.gitignore b/arch/parisc/kernel/.gitignore
new file mode 100644
index 000000000000..c5f676c3c224
--- /dev/null
+++ b/arch/parisc/kernel/.gitignore
@@ -0,0 +1 @@
+vmlinux.lds
diff --git a/arch/parisc/kernel/asm-offsets.c b/arch/parisc/kernel/asm-offsets.c
index 3efc0b73e4ff..699cf8ef2118 100644
--- a/arch/parisc/kernel/asm-offsets.c
+++ b/arch/parisc/kernel/asm-offsets.c
@@ -290,5 +290,8 @@ int main(void)
 	DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
 	DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
 	DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
+	BLANK();
+	DEFINE(ASM_PDC_RESULT_SIZE, NUM_PDC_RESULT * sizeof(unsigned long));
+	BLANK();
 	return 0;
 }
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index 7177a6cd1b7f..03f26bd75bd8 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -71,8 +71,8 @@
 #include <asm/processor.h>	/* for boot_cpu_data */
 
 static DEFINE_SPINLOCK(pdc_lock);
-static unsigned long pdc_result[32] __attribute__ ((aligned (8)));
-static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
+extern unsigned long pdc_result[NUM_PDC_RESULT];
+extern unsigned long pdc_result2[NUM_PDC_RESULT];
 
 #ifdef CONFIG_64BIT
 #define WIDE_FIRMWARE 0x1
@@ -150,26 +150,40 @@ static void convert_to_wide(unsigned long *addr)
 #endif
 }
 
+#ifdef CONFIG_64BIT
+void __init set_firmware_width_unlocked(void)
+{
+	int ret;
+
+	ret = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES,
+		__pa(pdc_result), 0);
+	convert_to_wide(pdc_result);
+	if (pdc_result[0] != NARROW_FIRMWARE)
+		parisc_narrow_firmware = 0;
+}
+	
 /**
  * set_firmware_width - Determine if the firmware is wide or narrow.
  * 
- * This function must be called before any pdc_* function that uses the convert_to_wide
- * function.
+ * This function must be called before any pdc_* function that uses the
+ * convert_to_wide function.
  */
 void __init set_firmware_width(void)
 {
-#ifdef CONFIG_64BIT
-	int retval;
 	unsigned long flags;
+	spin_lock_irqsave(&pdc_lock, flags);
+	set_firmware_width_unlocked();
+	spin_unlock_irqrestore(&pdc_lock, flags);
+}
+#else
+void __init set_firmware_width_unlocked(void) {
+	return;
+}
 
-        spin_lock_irqsave(&pdc_lock, flags);
-	retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_CAPABILITIES, __pa(pdc_result), 0);
-	convert_to_wide(pdc_result);
-	if(pdc_result[0] != NARROW_FIRMWARE)
-		parisc_narrow_firmware = 0;
-        spin_unlock_irqrestore(&pdc_lock, flags);
-#endif
+void __init set_firmware_width(void) {
+	return;
 }
+#endif /*CONFIG_64BIT*/
 
 /**
  * pdc_emergency_unlock - Unlock the linux pdc lock
@@ -288,6 +302,20 @@ int pdc_chassis_warn(unsigned long *warn)
 	return retval;
 }
 
+int __init pdc_coproc_cfg_unlocked(struct pdc_coproc_cfg *pdc_coproc_info)
+{
+	int ret;
+
+	ret = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
+	convert_to_wide(pdc_result);
+	pdc_coproc_info->ccr_functional = pdc_result[0];
+	pdc_coproc_info->ccr_present = pdc_result[1];
+	pdc_coproc_info->revision = pdc_result[17];
+	pdc_coproc_info->model = pdc_result[18];
+
+	return ret;
+}
+
 /**
  * pdc_coproc_cfg - To identify coprocessors attached to the processor.
  * @pdc_coproc_info: Return buffer address.
@@ -297,19 +325,14 @@ int pdc_chassis_warn(unsigned long *warn)
  */
 int __init pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info)
 {
-        int retval;
+	int ret;
 	unsigned long flags;
 
-        spin_lock_irqsave(&pdc_lock, flags);
-        retval = mem_pdc_call(PDC_COPROC, PDC_COPROC_CFG, __pa(pdc_result));
-        convert_to_wide(pdc_result);
-        pdc_coproc_info->ccr_functional = pdc_result[0];
-        pdc_coproc_info->ccr_present = pdc_result[1];
-        pdc_coproc_info->revision = pdc_result[17];
-        pdc_coproc_info->model = pdc_result[18];
-        spin_unlock_irqrestore(&pdc_lock, flags);
+	spin_lock_irqsave(&pdc_lock, flags);
+	ret = pdc_coproc_cfg_unlocked(pdc_coproc_info);
+	spin_unlock_irqrestore(&pdc_lock, flags);
 
-        return retval;
+	return ret;
 }
 
 /**
diff --git a/arch/parisc/kernel/head.S b/arch/parisc/kernel/head.S
index a84e31e82876..0e3d9f9b9e33 100644
--- a/arch/parisc/kernel/head.S
+++ b/arch/parisc/kernel/head.S
@@ -121,7 +121,7 @@ $pgt_fill_loop:
 	copy		%r0,%r2
 
 	/* And the RFI Target address too */
-	load32		start_kernel,%r11
+	load32		start_parisc,%r11
 
 	/* And the initial task pointer */
 	load32		init_thread_union,%r6
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c
index 49c637970789..90904f9dfc50 100644
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -4,6 +4,7 @@
  * Copyright (C) 2000 Hewlett-Packard Co, Linuxcare Inc.
  * Copyright (C) 2000 Matthew Wilcox <matthew@wil.cx>
  * Copyright (C) 2000 David Huggins-Daines <dhd@debian.org>
+ * Copyright (C) 2008 Helge Deller <deller@gmx.de>
  */
 
 #include <linux/kernel.h>
@@ -27,15 +28,149 @@
 /* PSW bits we allow the debugger to modify */
 #define USER_PSW_BITS	(PSW_N | PSW_V | PSW_CB)
 
-#undef DEBUG_PTRACE
+/*
+ * Called by kernel/ptrace.c when detaching..
+ *
+ * Make sure single step bits etc are not set.
+ */
+void ptrace_disable(struct task_struct *task)
+{
+	task->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
 
-#ifdef DEBUG_PTRACE
-#define DBG(x...)	printk(x)
-#else
-#define DBG(x...)
-#endif
+	/* make sure the trap bits are not set */
+	pa_psw(task)->r = 0;
+	pa_psw(task)->t = 0;
+	pa_psw(task)->h = 0;
+	pa_psw(task)->l = 0;
+}
+
+/*
+ * The following functions are called by ptrace_resume() when
+ * enabling or disabling single/block tracing.
+ */
+void user_disable_single_step(struct task_struct *task)
+{
+	ptrace_disable(task);
+}
+
+void user_enable_single_step(struct task_struct *task)
+{
+	task->ptrace &= ~PT_BLOCKSTEP;
+	task->ptrace |= PT_SINGLESTEP;
+
+	if (pa_psw(task)->n) {
+		struct siginfo si;
+
+		/* Nullified, just crank over the queue. */
+		task_regs(task)->iaoq[0] = task_regs(task)->iaoq[1];
+		task_regs(task)->iasq[0] = task_regs(task)->iasq[1];
+		task_regs(task)->iaoq[1] = task_regs(task)->iaoq[0] + 4;
+		pa_psw(task)->n = 0;
+		pa_psw(task)->x = 0;
+		pa_psw(task)->y = 0;
+		pa_psw(task)->z = 0;
+		pa_psw(task)->b = 0;
+		ptrace_disable(task);
+		/* Don't wake up the task, but let the
+		   parent know something happened. */
+		si.si_code = TRAP_TRACE;
+		si.si_addr = (void __user *) (task_regs(task)->iaoq[0] & ~3);
+		si.si_signo = SIGTRAP;
+		si.si_errno = 0;
+		force_sig_info(SIGTRAP, &si, task);
+		/* notify_parent(task, SIGCHLD); */
+		return;
+	}
+
+	/* Enable recovery counter traps.  The recovery counter
+	 * itself will be set to zero on a task switch.  If the
+	 * task is suspended on a syscall then the syscall return
+	 * path will overwrite the recovery counter with a suitable
+	 * value such that it traps once back in user space.  We
+	 * disable interrupts in the tasks PSW here also, to avoid
+	 * interrupts while the recovery counter is decrementing.
+	 */
+	pa_psw(task)->r = 1;
+	pa_psw(task)->t = 0;
+	pa_psw(task)->h = 0;
+	pa_psw(task)->l = 0;
+}
+
+void user_enable_block_step(struct task_struct *task)
+{
+	task->ptrace &= ~PT_SINGLESTEP;
+	task->ptrace |= PT_BLOCKSTEP;
+
+	/* Enable taken branch trap. */
+	pa_psw(task)->r = 0;
+	pa_psw(task)->t = 1;
+	pa_psw(task)->h = 0;
+	pa_psw(task)->l = 0;
+}
+
+long arch_ptrace(struct task_struct *child, long request, long addr, long data)
+{
+	unsigned long tmp;
+	long ret = -EIO;
 
-#ifdef CONFIG_64BIT
+	switch (request) {
+
+	/* Read the word at location addr in the USER area.  For ptraced
+	   processes, the kernel saves all regs on a syscall. */
+	case PTRACE_PEEKUSR:
+		if ((addr & (sizeof(long)-1)) ||
+		    (unsigned long) addr >= sizeof(struct pt_regs))
+			break;
+		tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
+		ret = put_user(tmp, (unsigned long *) data);
+		break;
+
+	/* Write the word at location addr in the USER area.  This will need
+	   to change when the kernel no longer saves all regs on a syscall.
+	   FIXME.  There is a problem at the moment in that r3-r18 are only
+	   saved if the process is ptraced on syscall entry, and even then
+	   those values are overwritten by actual register values on syscall
+	   exit. */
+	case PTRACE_POKEUSR:
+		/* Some register values written here may be ignored in
+		 * entry.S:syscall_restore_rfi; e.g. iaoq is written with
+		 * r31/r31+4, and not with the values in pt_regs.
+		 */
+		if (addr == PT_PSW) {
+			/* Allow writing to Nullify, Divide-step-correction,
+			 * and carry/borrow bits.
+			 * BEWARE, if you set N, and then single step, it won't
+			 * stop on the nullified instruction.
+			 */
+			data &= USER_PSW_BITS;
+			task_regs(child)->gr[0] &= ~USER_PSW_BITS;
+			task_regs(child)->gr[0] |= data;
+			ret = 0;
+			break;
+		}
+
+		if ((addr & (sizeof(long)-1)) ||
+		    (unsigned long) addr >= sizeof(struct pt_regs))
+			break;
+		if ((addr >= PT_GR1 && addr <= PT_GR31) ||
+				addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
+				(addr >= PT_FR0 && addr <= PT_FR31 + 4) ||
+				addr == PT_SAR) {
+			*(unsigned long *) ((char *) task_regs(child) + addr) = data;
+			ret = 0;
+		}
+		break;
+
+	default:
+		ret = ptrace_request(child, request, addr, data);
+		break;
+	}
+
+	return ret;
+}
+
+
+#ifdef CONFIG_COMPAT
 
 /* This function is needed to translate 32 bit pt_regs offsets in to
  * 64 bit pt_regs offsets.  For example, a 32 bit gdb under a 64 bit kernel
@@ -61,106 +196,25 @@ static long translate_usr_offset(long offset)
 	else
 		return -1;
 }
-#endif
 
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure single step bits etc are not set.
- */
-void ptrace_disable(struct task_struct *child)
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+			compat_ulong_t addr, compat_ulong_t data)
 {
-	/* make sure the trap bits are not set */
-	pa_psw(child)->r = 0;
-	pa_psw(child)->t = 0;
-	pa_psw(child)->h = 0;
-	pa_psw(child)->l = 0;
-}
-
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
-{
-	long ret;
-#ifdef DEBUG_PTRACE
-	long oaddr=addr, odata=data;
-#endif
+	compat_uint_t tmp;
+	long ret = -EIO;
 
 	switch (request) {
-	case PTRACE_PEEKTEXT: /* read word at location addr. */ 
-	case PTRACE_PEEKDATA: {
-#ifdef CONFIG_64BIT
-		if (__is_compat_task(child)) {
-			int copied;
-			unsigned int tmp;
-
-			addr &= 0xffffffffL;
-			copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
-			ret = -EIO;
-			if (copied != sizeof(tmp))
-				goto out_tsk;
-			ret = put_user(tmp,(unsigned int *) data);
-			DBG("sys_ptrace(PEEK%s, %d, %lx, %lx) returning %ld, data %x\n",
-				request == PTRACE_PEEKTEXT ? "TEXT" : "DATA",
-				pid, oaddr, odata, ret, tmp);
-		}
-		else
-#endif
-			ret = generic_ptrace_peekdata(child, addr, data);
-		goto out_tsk;
-	}
 
-	/* when I and D space are separate, this will have to be fixed. */
-	case PTRACE_POKETEXT: /* write the word at location addr. */
-	case PTRACE_POKEDATA:
-		ret = 0;
-#ifdef CONFIG_64BIT
-		if (__is_compat_task(child)) {
-			unsigned int tmp = (unsigned int)data;
-			DBG("sys_ptrace(POKE%s, %d, %lx, %lx)\n",
-				request == PTRACE_POKETEXT ? "TEXT" : "DATA",
-				pid, oaddr, odata);
-			addr &= 0xffffffffL;
-			if (access_process_vm(child, addr, &tmp, sizeof(tmp), 1) == sizeof(tmp))
-				goto out_tsk;
-		}
-		else
-#endif
-		{
-			if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
-				goto out_tsk;
-		}
-		ret = -EIO;
-		goto out_tsk;
-
-	/* Read the word at location addr in the USER area.  For ptraced
-	   processes, the kernel saves all regs on a syscall. */
-	case PTRACE_PEEKUSR: {
-		ret = -EIO;
-#ifdef CONFIG_64BIT
-		if (__is_compat_task(child)) {
-			unsigned int tmp;
-
-			if (addr & (sizeof(int)-1))
-				goto out_tsk;
-			if ((addr = translate_usr_offset(addr)) < 0)
-				goto out_tsk;
-
-			tmp = *(unsigned int *) ((char *) task_regs(child) + addr);
-			ret = put_user(tmp, (unsigned int *) data);
-			DBG("sys_ptrace(PEEKUSR, %d, %lx, %lx) returning %ld, addr %lx, data %x\n",
-				pid, oaddr, odata, ret, addr, tmp);
-		}
-		else
-#endif
-		{
-			unsigned long tmp;
+	case PTRACE_PEEKUSR:
+		if (addr & (sizeof(compat_uint_t)-1))
+			break;
+		addr = translate_usr_offset(addr);
+		if (addr < 0)
+			break;
 
-			if ((addr & (sizeof(long)-1)) || (unsigned long) addr >= sizeof(struct pt_regs))
-				goto out_tsk;
-			tmp = *(unsigned long *) ((char *) task_regs(child) + addr);
-			ret = put_user(tmp, (unsigned long *) data);
-		}
-		goto out_tsk;
-	}
+		tmp = *(compat_uint_t *) ((char *) task_regs(child) + addr);
+		ret = put_user(tmp, (compat_uint_t *) (unsigned long) data);
+		break;
 
 	/* Write the word at location addr in the USER area.  This will need
 	   to change when the kernel no longer saves all regs on a syscall.
@@ -169,185 +223,46 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 	   those values are overwritten by actual register values on syscall
 	   exit. */
 	case PTRACE_POKEUSR:
-		ret = -EIO;
 		/* Some register values written here may be ignored in
 		 * entry.S:syscall_restore_rfi; e.g. iaoq is written with
 		 * r31/r31+4, and not with the values in pt_regs.
 		 */
-		 /* PT_PSW=0, so this is valid for 32 bit processes under 64
-		 * bit kernels.
-		 */
 		if (addr == PT_PSW) {
-			/* PT_PSW=0, so this is valid for 32 bit processes
-			 * under 64 bit kernels.
-			 *
-			 * Allow writing to Nullify, Divide-step-correction,
-			 * and carry/borrow bits.
-			 * BEWARE, if you set N, and then single step, it won't
-			 * stop on the nullified instruction.
+			/* Since PT_PSW==0, it is valid for 32 bit processes
+			 * under 64 bit kernels as well.
 			 */
-			DBG("sys_ptrace(POKEUSR, %d, %lx, %lx)\n",
-				pid, oaddr, odata);
-			data &= USER_PSW_BITS;
-			task_regs(child)->gr[0] &= ~USER_PSW_BITS;
-			task_regs(child)->gr[0] |= data;
-			ret = 0;
-			goto out_tsk;
-		}
-#ifdef CONFIG_64BIT
-		if (__is_compat_task(child)) {
-			if (addr & (sizeof(int)-1))
-				goto out_tsk;
-			if ((addr = translate_usr_offset(addr)) < 0)
-				goto out_tsk;
-			DBG("sys_ptrace(POKEUSR, %d, %lx, %lx) addr %lx\n",
-				pid, oaddr, odata, addr);
+			ret = arch_ptrace(child, request, addr, data);
+		} else {
+			if (addr & (sizeof(compat_uint_t)-1))
+				break;
+			addr = translate_usr_offset(addr);
+			if (addr < 0)
+				break;
 			if (addr >= PT_FR0 && addr <= PT_FR31 + 4) {
 				/* Special case, fp regs are 64 bits anyway */
-				*(unsigned int *) ((char *) task_regs(child) + addr) = data;
+				*(__u64 *) ((char *) task_regs(child) + addr) = data;
 				ret = 0;
 			}
 			else if ((addr >= PT_GR1+4 && addr <= PT_GR31+4) ||
 					addr == PT_IAOQ0+4 || addr == PT_IAOQ1+4 ||
 					addr == PT_SAR+4) {
 				/* Zero the top 32 bits */
-				*(unsigned int *) ((char *) task_regs(child) + addr - 4) = 0;
-				*(unsigned int *) ((char *) task_regs(child) + addr) = data;
+				*(__u32 *) ((char *) task_regs(child) + addr - 4) = 0;
+				*(__u32 *) ((char *) task_regs(child) + addr) = data;
 				ret = 0;
 			}
-			goto out_tsk;
 		}
-		else
-#endif
-		{
-			if ((addr & (sizeof(long)-1)) || (unsigned long) addr >= sizeof(struct pt_regs))
-				goto out_tsk;
-			if ((addr >= PT_GR1 && addr <= PT_GR31) ||
-					addr == PT_IAOQ0 || addr == PT_IAOQ1 ||
-					(addr >= PT_FR0 && addr <= PT_FR31 + 4) ||
-					addr == PT_SAR) {
-				*(unsigned long *) ((char *) task_regs(child) + addr) = data;
-				ret = 0;
-			}
-			goto out_tsk;
-		}
-
-	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-	case PTRACE_CONT:
-		ret = -EIO;
-		DBG("sys_ptrace(%s)\n",
-			request == PTRACE_SYSCALL ? "SYSCALL" : "CONT");
-		if (!valid_signal(data))
-			goto out_tsk;
-		child->ptrace &= ~(PT_SINGLESTEP|PT_BLOCKSTEP);
-		if (request == PTRACE_SYSCALL) {
-			set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		} else {
-			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		}		
-		child->exit_code = data;
-		goto out_wake_notrap;
-
-	case PTRACE_KILL:
-		/*
-		 * make the child exit.  Best I can do is send it a
-		 * sigkill.  perhaps it should be put in the status
-		 * that it wants to exit.
-		 */
-		ret = 0;
-		DBG("sys_ptrace(KILL)\n");
-		if (child->exit_state == EXIT_ZOMBIE)	/* already dead */
-			goto out_tsk;
-		child->exit_code = SIGKILL;
-		goto out_wake_notrap;
-
-	case PTRACE_SINGLEBLOCK:
-		DBG("sys_ptrace(SINGLEBLOCK)\n");
-		ret = -EIO;
-		if (!valid_signal(data))
-			goto out_tsk;
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->ptrace &= ~PT_SINGLESTEP;
-		child->ptrace |= PT_BLOCKSTEP;
-		child->exit_code = data;
-
-		/* Enable taken branch trap. */
-		pa_psw(child)->r = 0;
-		pa_psw(child)->t = 1;
-		pa_psw(child)->h = 0;
-		pa_psw(child)->l = 0;
-		goto out_wake;
-
-	case PTRACE_SINGLESTEP:
-		DBG("sys_ptrace(SINGLESTEP)\n");
-		ret = -EIO;
-		if (!valid_signal(data))
-			goto out_tsk;
-
-		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
-		child->ptrace &= ~PT_BLOCKSTEP;
-		child->ptrace |= PT_SINGLESTEP;
-		child->exit_code = data;
-
-		if (pa_psw(child)->n) {
-			struct siginfo si;
-
-			/* Nullified, just crank over the queue. */
-			task_regs(child)->iaoq[0] = task_regs(child)->iaoq[1];
-			task_regs(child)->iasq[0] = task_regs(child)->iasq[1];
-			task_regs(child)->iaoq[1] = task_regs(child)->iaoq[0] + 4;
-			pa_psw(child)->n = 0;
-			pa_psw(child)->x = 0;
-			pa_psw(child)->y = 0;
-			pa_psw(child)->z = 0;
-			pa_psw(child)->b = 0;
-			ptrace_disable(child);
-			/* Don't wake up the child, but let the
-			   parent know something happened. */
-			si.si_code = TRAP_TRACE;
-			si.si_addr = (void __user *) (task_regs(child)->iaoq[0] & ~3);
-			si.si_signo = SIGTRAP;
-			si.si_errno = 0;
-			force_sig_info(SIGTRAP, &si, child);
-			//notify_parent(child, SIGCHLD);
-			//ret = 0;
-			goto out_wake;
-		}
-
-		/* Enable recovery counter traps.  The recovery counter
-		 * itself will be set to zero on a task switch.  If the
-		 * task is suspended on a syscall then the syscall return
-		 * path will overwrite the recovery counter with a suitable
-		 * value such that it traps once back in user space.  We
-		 * disable interrupts in the childs PSW here also, to avoid
-		 * interrupts while the recovery counter is decrementing.
-		 */
-		pa_psw(child)->r = 1;
-		pa_psw(child)->t = 0;
-		pa_psw(child)->h = 0;
-		pa_psw(child)->l = 0;
-		/* give it a chance to run. */
-		goto out_wake;
-
-	case PTRACE_GETEVENTMSG:
-                ret = put_user(child->ptrace_message, (unsigned int __user *) data);
-		goto out_tsk;
+		break;
 
 	default:
-		ret = ptrace_request(child, request, addr, data);
-		goto out_tsk;
+		ret = compat_ptrace_request(child, request, addr, data);
+		break;
 	}
 
-out_wake_notrap:
-	ptrace_disable(child);
-out_wake:
-	wake_up_process(child);
-	ret = 0;
-out_tsk:
-	DBG("arch_ptrace(%ld, %d, %lx, %lx) returning %ld\n",
-		request, pid, oaddr, odata, ret);
 	return ret;
 }
+#endif
+
 
 void syscall_trace(void)
 {
diff --git a/arch/parisc/kernel/real2.S b/arch/parisc/kernel/real2.S
index 7a92695d95a6..5f3d3a1f9037 100644
--- a/arch/parisc/kernel/real2.S
+++ b/arch/parisc/kernel/real2.S
@@ -8,12 +8,24 @@
  *
  */
 
+#include <asm/pdc.h>
 #include <asm/psw.h>
 #include <asm/assembly.h>
+#include <asm/asm-offsets.h>
 
 #include <linux/linkage.h>
 
+
 	.section	.bss
+
+	.export pdc_result
+	.export pdc_result2
+	.align 8
+pdc_result:
+	.block	ASM_PDC_RESULT_SIZE
+pdc_result2:
+	.block	ASM_PDC_RESULT_SIZE
+
 	.export real_stack
 	.export real32_stack
 	.export real64_stack
diff --git a/arch/parisc/kernel/setup.c b/arch/parisc/kernel/setup.c
index 39e7c5a5946a..7d27853ff8c8 100644
--- a/arch/parisc/kernel/setup.c
+++ b/arch/parisc/kernel/setup.c
@@ -44,6 +44,7 @@
 #include <asm/pdc_chassis.h>
 #include <asm/io.h>
 #include <asm/setup.h>
+#include <asm/unwind.h>
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
 
@@ -123,6 +124,7 @@ void __init setup_arch(char **cmdline_p)
 #ifdef CONFIG_64BIT
 	extern int parisc_narrow_firmware;
 #endif
+	unwind_init();
 
 	init_per_cpu(smp_processor_id());	/* Set Modes & Enable FP */
 
@@ -368,6 +370,31 @@ static int __init parisc_init(void)
 
 	return 0;
 }
-
 arch_initcall(parisc_init);
 
+void start_parisc(void)
+{
+	extern void start_kernel(void);
+
+	int ret, cpunum;
+	struct pdc_coproc_cfg coproc_cfg;
+
+	cpunum = smp_processor_id();
+
+	set_firmware_width_unlocked();
+
+	ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
+	if (ret >= 0 && coproc_cfg.ccr_functional) {
+		mtctl(coproc_cfg.ccr_functional, 10);
+
+		cpu_data[cpunum].fp_rev = coproc_cfg.revision;
+		cpu_data[cpunum].fp_model = coproc_cfg.model;
+
+		asm volatile ("fstd	%fr0,8(%sp)");
+	} else {
+		panic("must have an fpu to boot linux");
+	}
+
+	start_kernel();
+	// not reached
+}
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index c7e59f548817..303d2b647e41 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -87,7 +87,7 @@
 	ENTRY_SAME(setuid)
 	ENTRY_SAME(getuid)
 	ENTRY_COMP(stime)		/* 25 */
-	ENTRY_SAME(ptrace)
+	ENTRY_COMP(ptrace)
 	ENTRY_SAME(alarm)
 	/* see stat comment */
 	ENTRY_COMP(newfstat)
@@ -407,6 +407,12 @@
 	ENTRY_SAME(timerfd_create)
 	ENTRY_COMP(timerfd_settime)
 	ENTRY_COMP(timerfd_gettime)
+	ENTRY_COMP(signalfd4)
+	ENTRY_SAME(eventfd2)		/* 310 */
+	ENTRY_SAME(epoll_create1)
+	ENTRY_SAME(dup3)
+	ENTRY_SAME(pipe2)
+	ENTRY_SAME(inotify_init1)
 
 	/* Nothing yet */
 
diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c
index 24be86bba94d..4d09203bc693 100644
--- a/arch/parisc/kernel/time.c
+++ b/arch/parisc/kernel/time.c
@@ -23,6 +23,7 @@
 #include <linux/smp.h>
 #include <linux/profile.h>
 #include <linux/clocksource.h>
+#include <linux/platform_device.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -215,6 +216,24 @@ void __init start_cpu_itimer(void)
 	cpu_data[cpu].it_value = next_tick;
 }
 
+struct platform_device rtc_parisc_dev = {
+	.name = "rtc-parisc",
+	.id = -1,
+};
+
+static int __init rtc_init(void)
+{
+	int ret;
+
+	ret = platform_device_register(&rtc_parisc_dev);
+	if (ret < 0)
+		printk(KERN_ERR "unable to register rtc device...\n");
+
+	/* not necessarily an error */
+	return 0;
+}
+module_init(rtc_init);
+
 void __init time_init(void)
 {
 	static struct pdc_tod tod_data;
@@ -245,4 +264,3 @@ void __init time_init(void)
 		xtime.tv_nsec = 0;
 	}
 }
-
diff --git a/arch/parisc/kernel/unwind.c b/arch/parisc/kernel/unwind.c
index 701b2d2d8882..6773c582e457 100644
--- a/arch/parisc/kernel/unwind.c
+++ b/arch/parisc/kernel/unwind.c
@@ -170,7 +170,7 @@ void unwind_table_remove(struct unwind_table *table)
 }
 
 /* Called from setup_arch to import the kernel unwind info */
-static int unwind_init(void)
+int unwind_init(void)
 {
 	long start, stop;
 	register unsigned long gp __asm__ ("r27");
@@ -417,5 +417,3 @@ int unwind_to_user(struct unwind_frame_info *info)
 
 	return ret;
 }
-
-module_init(unwind_init);