sparc: prepare kernel/ for unification

o sparc32 files with identical names to sparc64 renamed to <name>_32.S
o introduced a few Kconfig helpers to simplify Makefile logic
o refactored Makefile to prepare for unification
  - use obj-$(CONFIG_SPARC32) for sparc32 specific files
  - use <name>_$(BITS) for files where sparc64 has a _64 variant
  - sparc64 directly include a few files where sparc32 builds them,
    refer to these files directly (no BITS)
  - sneaked in -Werror as used by sparc64
o modified sparc/Makefile to use the new names for head/init_task

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 466 deletions

diff --git a/arch/sparc/kernel/ptrace.c b/arch/sparc/kernel/ptrace.c
deleted file mode 100644
index 8ce6285a06d5..000000000000
--- a/arch/sparc/kernel/ptrace.c
+++ /dev/null
@@ -1,466 +0,0 @@
-/* ptrace.c: Sparc process tracing support.
- *
- * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net)
- *
- * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson,
- * and David Mosberger.
- *
- * Added Linux support -miguel (weird, eh?, the original code was meant
- * to emulate SunOS).
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/security.h>
-#include <linux/signal.h>
-#include <linux/regset.h>
-#include <linux/elf.h>
-#include <linux/tracehook.h>
-
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-/* #define ALLOW_INIT_TRACING */
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure single step bits etc are not set.
- */
-void ptrace_disable(struct task_struct *child)
-{
-	/* nothing to do */
-}
-
-enum sparc_regset {
-	REGSET_GENERAL,
-	REGSET_FP,
-};
-
-static int genregs32_get(struct task_struct *target,
-			 const struct user_regset *regset,
-			 unsigned int pos, unsigned int count,
-			 void *kbuf, void __user *ubuf)
-{
-	const struct pt_regs *regs = target->thread.kregs;
-	unsigned long __user *reg_window;
-	unsigned long *k = kbuf;
-	unsigned long __user *u = ubuf;
-	unsigned long reg;
-
-	if (target == current)
-		flush_user_windows();
-
-	pos /= sizeof(reg);
-	count /= sizeof(reg);
-
-	if (kbuf) {
-		for (; count > 0 && pos < 16; count--)
-			*k++ = regs->u_regs[pos++];
-
-		reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(*k++, &reg_window[pos++]))
-				return -EFAULT;
-		}
-	} else {
-		for (; count > 0 && pos < 16; count--) {
-			if (put_user(regs->u_regs[pos++], u++))
-				return -EFAULT;
-		}
-
-		reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(reg, &reg_window[pos++]) ||
-			    put_user(reg, u++))
-				return -EFAULT;
-		}
-	}
-	while (count > 0) {
-		switch (pos) {
-		case 32: /* PSR */
-			reg = regs->psr;
-			break;
-		case 33: /* PC */
-			reg = regs->pc;
-			break;
-		case 34: /* NPC */
-			reg = regs->npc;
-			break;
-		case 35: /* Y */
-			reg = regs->y;
-			break;
-		case 36: /* WIM */
-		case 37: /* TBR */
-			reg = 0;
-			break;
-		default:
-			goto finish;
-		}
-
-		if (kbuf)
-			*k++ = reg;
-		else if (put_user(reg, u++))
-			return -EFAULT;
-		pos++;
-		count--;
-	}
-finish:
-	pos *= sizeof(reg);
-	count *= sizeof(reg);
-
-	return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-					38 * sizeof(reg), -1);
-}
-
-static int genregs32_set(struct task_struct *target,
-			 const struct user_regset *regset,
-			 unsigned int pos, unsigned int count,
-			 const void *kbuf, const void __user *ubuf)
-{
-	struct pt_regs *regs = target->thread.kregs;
-	unsigned long __user *reg_window;
-	const unsigned long *k = kbuf;
-	const unsigned long __user *u = ubuf;
-	unsigned long reg;
-
-	if (target == current)
-		flush_user_windows();
-
-	pos /= sizeof(reg);
-	count /= sizeof(reg);
-
-	if (kbuf) {
-		for (; count > 0 && pos < 16; count--)
-			regs->u_regs[pos++] = *k++;
-
-		reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (put_user(*k++, &reg_window[pos++]))
-				return -EFAULT;
-		}
-	} else {
-		for (; count > 0 && pos < 16; count--) {
-			if (get_user(reg, u++))
-				return -EFAULT;
-			regs->u_regs[pos++] = reg;
-		}
-
-		reg_window = (unsigned long __user *) regs->u_regs[UREG_I6];
-		for (; count > 0 && pos < 32; count--) {
-			if (get_user(reg, u++) ||
-			    put_user(reg, &reg_window[pos++]))
-				return -EFAULT;
-		}
-	}
-	while (count > 0) {
-		unsigned long psr;
-
-		if (kbuf)
-			reg = *k++;
-		else if (get_user(reg, u++))
-			return -EFAULT;
-
-		switch (pos) {
-		case 32: /* PSR */
-			psr = regs->psr;
-			psr &= ~(PSR_ICC | PSR_SYSCALL);
-			psr |= (reg & (PSR_ICC | PSR_SYSCALL));
-			regs->psr = psr;
-			break;
-		case 33: /* PC */
-			regs->pc = reg;
-			break;
-		case 34: /* NPC */
-			regs->npc = reg;
-			break;
-		case 35: /* Y */
-			regs->y = reg;
-			break;
-		case 36: /* WIM */
-		case 37: /* TBR */
-			break;
-		default:
-			goto finish;
-		}
-
-		pos++;
-		count--;
-	}
-finish:
-	pos *= sizeof(reg);
-	count *= sizeof(reg);
-
-	return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
-					 38 * sizeof(reg), -1);
-}
-
-static int fpregs32_get(struct task_struct *target,
-			const struct user_regset *regset,
-			unsigned int pos, unsigned int count,
-			void *kbuf, void __user *ubuf)
-{
-	const unsigned long *fpregs = target->thread.float_regs;
-	int ret = 0;
-
-#if 0
-	if (target == current)
-		save_and_clear_fpu();
-#endif
-
-	ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-				  fpregs,
-				  0, 32 * sizeof(u32));
-
-	if (!ret)
-		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-					       32 * sizeof(u32),
-					       33 * sizeof(u32));
-	if (!ret)
-		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-					  &target->thread.fsr,
-					  33 * sizeof(u32),
-					  34 * sizeof(u32));
-
-	if (!ret) {
-		unsigned long val;
-
-		val = (1 << 8) | (8 << 16);
-		ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
-					  &val,
-					  34 * sizeof(u32),
-					  35 * sizeof(u32));
-	}
-
-	if (!ret)
-		ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
-					       35 * sizeof(u32), -1);
-
-	return ret;
-}
-
-static int fpregs32_set(struct task_struct *target,
-			const struct user_regset *regset,
-			unsigned int pos, unsigned int count,
-			const void *kbuf, const void __user *ubuf)
-{
-	unsigned long *fpregs = target->thread.float_regs;
-	int ret;
-
-#if 0
-	if (target == current)
-		save_and_clear_fpu();
-#endif
-	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-				 fpregs,
-				 0, 32 * sizeof(u32));
-	if (!ret)
-		user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
-					  32 * sizeof(u32),
-					  33 * sizeof(u32));
-	if (!ret && count > 0) {
-		ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
-					 &target->thread.fsr,
-					 33 * sizeof(u32),
-					 34 * sizeof(u32));
-	}
-
-	if (!ret)
-		ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
-						34 * sizeof(u32), -1);
-	return ret;
-}
-
-static const struct user_regset sparc32_regsets[] = {
-	/* Format is:
-	 * 	G0 --> G7
-	 *	O0 --> O7
-	 *	L0 --> L7
-	 *	I0 --> I7
-	 *	PSR, PC, nPC, Y, WIM, TBR
-	 */
-	[REGSET_GENERAL] = {
-		.core_note_type = NT_PRSTATUS,
-		.n = 38,
-		.size = sizeof(u32), .align = sizeof(u32),
-		.get = genregs32_get, .set = genregs32_set
-	},
-	/* Format is:
-	 *	F0 --> F31
-	 *	empty 32-bit word
-	 *	FSR (32--bit word)
-	 *	FPU QUEUE COUNT (8-bit char)
-	 *	FPU QUEUE ENTRYSIZE (8-bit char)
-	 *	FPU ENABLED (8-bit char)
-	 *	empty 8-bit char
-	 *	FPU QUEUE (64 32-bit ints)
-	 */
-	[REGSET_FP] = {
-		.core_note_type = NT_PRFPREG,
-		.n = 99,
-		.size = sizeof(u32), .align = sizeof(u32),
-		.get = fpregs32_get, .set = fpregs32_set
-	},
-};
-
-static const struct user_regset_view user_sparc32_view = {
-	.name = "sparc", .e_machine = EM_SPARC,
-	.regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
-};
-
-const struct user_regset_view *task_user_regset_view(struct task_struct *task)
-{
-	return &user_sparc32_view;
-}
-
-long arch_ptrace(struct task_struct *child, long request, long addr, long data)
-{
-	unsigned long addr2 = current->thread.kregs->u_regs[UREG_I4];
-	const struct user_regset_view *view;
-	int ret;
-
-	view = task_user_regset_view(current);
-
-	switch(request) {
-	case PTRACE_GETREGS: {
-		struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
-		ret = copy_regset_to_user(child, view, REGSET_GENERAL,
-					  32 * sizeof(u32),
-					  4 * sizeof(u32),
-					  &pregs->psr);
-		if (!ret)
-			copy_regset_to_user(child, view, REGSET_GENERAL,
-					    1 * sizeof(u32),
-					    15 * sizeof(u32),
-					    &pregs->u_regs[0]);
-		break;
-	}
-
-	case PTRACE_SETREGS: {
-		struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
-
-		ret = copy_regset_from_user(child, view, REGSET_GENERAL,
-					    32 * sizeof(u32),
-					    4 * sizeof(u32),
-					    &pregs->psr);
-		if (!ret)
-			copy_regset_from_user(child, view, REGSET_GENERAL,
-					      1 * sizeof(u32),
-					      15 * sizeof(u32),
-					      &pregs->u_regs[0]);
-		break;
-	}
-
-	case PTRACE_GETFPREGS: {
-		struct fps {
-			unsigned long regs[32];
-			unsigned long fsr;
-			unsigned long flags;
-			unsigned long extra;
-			unsigned long fpqd;
-			struct fq {
-				unsigned long *insnaddr;
-				unsigned long insn;
-			} fpq[16];
-		};
-		struct fps __user *fps = (struct fps __user *) addr;
-
-		ret = copy_regset_to_user(child, view, REGSET_FP,
-					  0 * sizeof(u32),
-					  32 * sizeof(u32),
-					  &fps->regs[0]);
-		if (!ret)
-			ret = copy_regset_to_user(child, view, REGSET_FP,
-						  33 * sizeof(u32),
-						  1 * sizeof(u32),
-						  &fps->fsr);
-
-		if (!ret) {
-			if (__put_user(0, &fps->fpqd) ||
-			    __put_user(0, &fps->flags) ||
-			    __put_user(0, &fps->extra) ||
-			    clear_user(fps->fpq, sizeof(fps->fpq)))
-				ret = -EFAULT;
-		}
-		break;
-	}
-
-	case PTRACE_SETFPREGS: {
-		struct fps {
-			unsigned long regs[32];
-			unsigned long fsr;
-			unsigned long flags;
-			unsigned long extra;
-			unsigned long fpqd;
-			struct fq {
-				unsigned long *insnaddr;
-				unsigned long insn;
-			} fpq[16];
-		};
-		struct fps __user *fps = (struct fps __user *) addr;
-
-		ret = copy_regset_from_user(child, view, REGSET_FP,
-					    0 * sizeof(u32),
-					    32 * sizeof(u32),
-					    &fps->regs[0]);
-		if (!ret)
-			ret = copy_regset_from_user(child, view, REGSET_FP,
-						    33 * sizeof(u32),
-						    1 * sizeof(u32),
-						    &fps->fsr);
-		break;
-	}
-
-	case PTRACE_READTEXT:
-	case PTRACE_READDATA:
-		ret = ptrace_readdata(child, addr,
-				      (void __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, (void __user *) addr2,
-				       addr, data);
-
-		if (ret == data)
-			ret = 0;
-		else if (ret >= 0)
-			ret = -EIO;
-		break;
-
-	default:
-		if (request == PTRACE_SPARC_DETACH)
-			request = PTRACE_DETACH;
-		ret = ptrace_request(child, request, addr, data);
-		break;
-	}
-
-	return ret;
-}
-
-asmlinkage int syscall_trace(struct pt_regs *regs, int syscall_exit_p)
-{
-	int ret = 0;
-
-	if (test_thread_flag(TIF_SYSCALL_TRACE)) {
-		if (syscall_exit_p)
-			tracehook_report_syscall_exit(regs, 0);
-		else
-			ret = tracehook_report_syscall_entry(regs);
-	}
-
-	return ret;
-}