x86: x86 ptrace merge removals

This removes the old separate 64-bit and ia32 ptrace source files.
They are no longer used.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/ia32/ptrace32.c

-/*
- * 32bit ptrace for x86-64.
- *
- * Copyright 2001,2002 Andi Kleen, SuSE Labs.
- * Some parts copied from arch/i386/kernel/ptrace.c. See that file for earlier
- * copyright.
- *
- * This allows to access 64bit processes too; but there is no way to
- * see the extended register contents.
- */
-
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/sched.h>
-#include <linux/syscalls.h>
-#include <linux/unistd.h>
-#include <linux/mm.h>
-#include <linux/err.h>
-#include <linux/ptrace.h>
-#include <asm/ptrace.h>
-#include <asm/compat.h>
-#include <asm/uaccess.h>
-#include <asm/user32.h>
-#include <asm/user.h>
-#include <asm/errno.h>
-#include <asm/debugreg.h>
-#include <asm/i387.h>
-#include <asm/fpu32.h>
-#include <asm/ia32.h>
-
-/*
- * Determines which flags the user has access to [1 = access, 0 = no access].
- * Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9).
- * Also masks reserved bits (31-22, 15, 5, 3, 1).
- */
-#define FLAG_MASK 0x54dd5UL
-
-#define R32(l,q)							\
-	case offsetof(struct user32, regs.l):				\
-		regs->q = val; break;
-
-static int putreg32(struct task_struct *child, unsigned regno, u32 val)
-{
-	struct pt_regs *regs = task_pt_regs(child);
-
-	switch (regno) {
-	case offsetof(struct user32, regs.fs):
-		if (val && (val & 3) != 3)
-			return -EIO;
-		child->thread.fsindex = val & 0xffff;
-		if (child == current)
-			loadsegment(fs, child->thread.fsindex);
-		break;
-	case offsetof(struct user32, regs.gs):
-		if (val && (val & 3) != 3)
-			return -EIO;
-		child->thread.gsindex = val & 0xffff;
-		if (child == current)
-			load_gs_index(child->thread.gsindex);
-		break;
-	case offsetof(struct user32, regs.ds):
-		if (val && (val & 3) != 3)
-			return -EIO;
-		child->thread.ds = val & 0xffff;
-		if (child == current)
-			loadsegment(ds, child->thread.ds);
-		break;
-	case offsetof(struct user32, regs.es):
-		child->thread.es = val & 0xffff;
-		if (child == current)
-			loadsegment(es, child->thread.ds);
-		break;
-	case offsetof(struct user32, regs.ss):
-		if ((val & 3) != 3)
-			return -EIO;
-		regs->ss = val & 0xffff;
-		break;
-	case offsetof(struct user32, regs.cs):
-		if ((val & 3) != 3)
-			return -EIO;
-		regs->cs = val & 0xffff;
-		break;
-
-	R32(ebx, bx);
-	R32(ecx, cx);
-	R32(edx, dx);
-	R32(edi, di);
-	R32(esi, si);
-	R32(ebp, bp);
-	R32(eax, ax);
-	R32(orig_eax, orig_ax);
-	R32(eip, ip);
-	R32(esp, sp);
-
-	case offsetof(struct user32, regs.eflags):
-		val &= FLAG_MASK;
-		/*
-		 * If the user value contains TF, mark that
-		 * it was not "us" (the debugger) that set it.
-		 * If not, make sure it stays set if we had.
-		 */
-		if (val & X86_EFLAGS_TF)
-			clear_tsk_thread_flag(child, TIF_FORCED_TF);
-		else if (test_tsk_thread_flag(child, TIF_FORCED_TF))
-			val |= X86_EFLAGS_TF;
-		regs->flags = val | (regs->flags & ~FLAG_MASK);
-		break;
-
-	case offsetof(struct user32, u_debugreg[0]) ...
-		offsetof(struct user32, u_debugreg[7]):
-		regno -= offsetof(struct user32, u_debugreg[0]);
-		return ptrace_set_debugreg(child, regno / 4, val);
-
-	default:
-		if (regno > sizeof(struct user32) || (regno & 3))
-			return -EIO;
-
-		/*
-		 * Other dummy fields in the virtual user structure
-		 * are ignored
-		 */
-		break;
-	}
-	return 0;
-}
-
-#undef R32
-
-#define R32(l,q)							\
-	case offsetof(struct user32, regs.l):				\
-		*val = regs->q; break
-
-static int getreg32(struct task_struct *child, unsigned regno, u32 *val)
-{
-	struct pt_regs *regs = task_pt_regs(child);
-
-	switch (regno) {
-	case offsetof(struct user32, regs.fs):
-		*val = child->thread.fsindex;
-		if (child == current)
-			asm("movl %%fs,%0" : "=r" (*val));
-		break;
-	case offsetof(struct user32, regs.gs):
-		*val = child->thread.gsindex;
-		if (child == current)
-			asm("movl %%gs,%0" : "=r" (*val));
-		break;
-	case offsetof(struct user32, regs.ds):
-		*val = child->thread.ds;
-		if (child == current)
-			asm("movl %%ds,%0" : "=r" (*val));
-		break;
-	case offsetof(struct user32, regs.es):
-		*val = child->thread.es;
-		if (child == current)
-			asm("movl %%es,%0" : "=r" (*val));
-		break;
-
-	R32(cs, cs);
-	R32(ss, ss);
-	R32(ebx, bx);
-	R32(ecx, cx);
-	R32(edx, dx);
-	R32(edi, di);
-	R32(esi, si);
-	R32(ebp, bp);
-	R32(eax, ax);
-	R32(orig_eax, orig_ax);
-	R32(eip, ip);
-	R32(esp, sp);
-
-	case offsetof(struct user32, regs.eflags):
-		/*
-		 * If the debugger set TF, hide it from the readout.
-		 */
-		*val = regs->flags;
-		if (test_tsk_thread_flag(child, TIF_FORCED_TF))
-			*val &= ~X86_EFLAGS_TF;
-		break;
-
-	case offsetof(struct user32, u_debugreg[0]) ...
-		offsetof(struct user32, u_debugreg[7]):
-		regno -= offsetof(struct user32, u_debugreg[0]);
-		*val = ptrace_get_debugreg(child, regno / 4);
-		break;
-
-	default:
-		if (regno > sizeof(struct user32) || (regno & 3))
-			return -EIO;
-
-		/*
-		 * Other dummy fields in the virtual user structure
-		 * are ignored
-		 */
-		*val = 0;
-		break;
-	}
-	return 0;
-}
-
-#undef R32
-
-static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
-{
-	siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t));
-	compat_siginfo_t __user *si32 = compat_ptr(data);
-	siginfo_t ssi;
-	int ret;
-
-	if (request == PTRACE_SETSIGINFO) {
-		memset(&ssi, 0, sizeof(siginfo_t));
-		ret = copy_siginfo_from_user32(&ssi, si32);
-		if (ret)
-			return ret;
-		if (copy_to_user(si, &ssi, sizeof(siginfo_t)))
-			return -EFAULT;
-	}
-	ret = sys_ptrace(request, pid, addr, (unsigned long)si);
-	if (ret)
-		return ret;
-	if (request == PTRACE_GETSIGINFO) {
-		if (copy_from_user(&ssi, si, sizeof(siginfo_t)))
-			return -EFAULT;
-		ret = copy_siginfo_to_user32(si32, &ssi);
-	}
-	return ret;
-}
-
-asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
-{
-	struct task_struct *child;
-	struct pt_regs *childregs;
-	void __user *datap = compat_ptr(data);
-	int ret;
-	__u32 val;
-
-	switch (request) {
-	case PTRACE_TRACEME:
-	case PTRACE_ATTACH:
-	case PTRACE_KILL:
-	case PTRACE_CONT:
-	case PTRACE_SINGLESTEP:
-	case PTRACE_SINGLEBLOCK:
-	case PTRACE_DETACH:
-	case PTRACE_SYSCALL:
-	case PTRACE_OLDSETOPTIONS:
-	case PTRACE_SETOPTIONS:
-	case PTRACE_SET_THREAD_AREA:
-	case PTRACE_GET_THREAD_AREA:
-		return sys_ptrace(request, pid, addr, data);
-
-	default:
-		return -EINVAL;
-
-	case PTRACE_PEEKTEXT:
-	case PTRACE_PEEKDATA:
-	case PTRACE_POKEDATA:
-	case PTRACE_POKETEXT:
-	case PTRACE_POKEUSR:
-	case PTRACE_PEEKUSR:
-	case PTRACE_GETREGS:
-	case PTRACE_SETREGS:
-	case PTRACE_SETFPREGS:
-	case PTRACE_GETFPREGS:
-	case PTRACE_SETFPXREGS:
-	case PTRACE_GETFPXREGS:
-	case PTRACE_GETEVENTMSG:
-		break;
-
-	case PTRACE_SETSIGINFO:
-	case PTRACE_GETSIGINFO:
-		return ptrace32_siginfo(request, pid, addr, data);
-	}
-
-	child = ptrace_get_task_struct(pid);
-	if (IS_ERR(child))
-		return PTR_ERR(child);
-
-	ret = ptrace_check_attach(child, request == PTRACE_KILL);
-	if (ret < 0)
-		goto out;
-
-	childregs = task_pt_regs(child);
-
-	switch (request) {
-	case PTRACE_PEEKDATA:
-	case PTRACE_PEEKTEXT:
-		ret = 0;
-		if (access_process_vm(child, addr, &val, sizeof(u32), 0) !=
-		    sizeof(u32))
-			ret = -EIO;
-		else
-			ret = put_user(val, (unsigned int __user *)datap);
-		break;
-
-	case PTRACE_POKEDATA:
-	case PTRACE_POKETEXT:
-		ret = 0;
-		if (access_process_vm(child, addr, &data, sizeof(u32), 1) !=
-		    sizeof(u32))
-			ret = -EIO;
-		break;
-
-	case PTRACE_PEEKUSR:
-		ret = getreg32(child, addr, &val);
-		if (ret == 0)
-			ret = put_user(val, (__u32 __user *)datap);
-		break;
-
-	case PTRACE_POKEUSR:
-		ret = putreg32(child, addr, data);
-		break;
-
-	case PTRACE_GETREGS: { /* Get all gp regs from the child. */
-		int i;
-
-		if (!access_ok(VERIFY_WRITE, datap, 16*4)) {
-			ret = -EIO;
-			break;
-		}
-		ret = 0;
-		for (i = 0; i <= 16*4; i += sizeof(__u32)) {
-			getreg32(child, i, &val);
-			ret |= __put_user(val, (u32 __user *)datap);
-			datap += sizeof(u32);
-		}
-		break;
-	}
-
-	case PTRACE_SETREGS: { /* Set all gp regs in the child. */
-		unsigned long tmp;
-		int i;
-
-		if (!access_ok(VERIFY_READ, datap, 16*4)) {
-			ret = -EIO;
-			break;
-		}
-		ret = 0;
-		for (i = 0; i <= 16*4; i += sizeof(u32)) {
-			ret |= __get_user(tmp, (u32 __user *)datap);
-			putreg32(child, i, tmp);
-			datap += sizeof(u32);
-		}
-		break;
-	}
-
-	case PTRACE_GETFPREGS:
-		ret = -EIO;
-		if (!access_ok(VERIFY_READ, compat_ptr(data),
-			       sizeof(struct user_i387_struct)))
-			break;
-		save_i387_ia32(child, datap, childregs, 1);
-		ret = 0;
-			break;
-
-	case PTRACE_SETFPREGS:
-		ret = -EIO;
-		if (!access_ok(VERIFY_WRITE, datap,
-			       sizeof(struct user_i387_struct)))
-			break;
-		ret = 0;
-		/* don't check EFAULT to be bug-to-bug compatible to i386 */
-		restore_i387_ia32(child, datap, 1);
-		break;
-
-	case PTRACE_GETFPXREGS: {
-		struct user32_fxsr_struct __user *u = datap;
-
-		init_fpu(child);
-		ret = -EIO;
-		if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
-			break;
-			ret = -EFAULT;
-		if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u)))
-			break;
-		ret = __put_user(childregs->cs, &u->fcs);
-		ret |= __put_user(child->thread.ds, &u->fos);
-		break;
-	}
-	case PTRACE_SETFPXREGS: {
-		struct user32_fxsr_struct __user *u = datap;
-
-		unlazy_fpu(child);
-		ret = -EIO;
-		if (!access_ok(VERIFY_READ, u, sizeof(*u)))
-			break;
-		/*
-		 * no checking to be bug-to-bug compatible with i386.
-		 * but silence warning
-		 */
-		if (__copy_from_user(&child->thread.i387.fxsave, u, sizeof(*u)))
-			;
-		set_stopped_child_used_math(child);
-		child->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask;
-		ret = 0;
-		break;
-	}
-
-	case PTRACE_GETEVENTMSG:
-		ret = put_user(child->ptrace_message,
-			       (unsigned int __user *)compat_ptr(data));
-		break;
-
-	default:
-		BUG();
-	}
-
- out:
-	put_task_struct(child);
-	return ret;
-}