m68k: merge the mmu and non-mmu versions of ptrace.c
Most of the code in the non-mmu ptrace_no.c file is the same as the mmu
version ptrace_mm.c. So merge them back into a single file.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 07a4175..149a05f 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -1,5 +1,305 @@
+/*
+ * linux/arch/m68k/kernel/ptrace.c
+ *
+ * Copyright (C) 1994 by Hamish Macdonald
+ * Taken from linux/kernel/ptrace.c and modified for M680x0.
+ * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file COPYING in the main directory of
+ * this archive for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/signal.h>
+#include <linux/tracehook.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+
+/*
+ * does not yet catch signals sent when the child dies.
+ * in exit.c or in signal.c.
+ */
+
+/* determines which bits in the SR the user has access to. */
+/* 1 = access 0 = no access */
+#define SR_MASK 0x001f
+
+/* sets the trace bits. */
+#define TRACE_BITS 0xC000
+#define T1_BIT 0x8000
+#define T0_BIT 0x4000
+
+/* Find the stack offset for a register, relative to thread.esp0. */
+#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg)
+#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \
+ - sizeof(struct switch_stack))
+/* Mapping from PT_xxx to the stack offset at which the register is
+ saved. Notice that usp has no stack-slot and needs to be treated
+ specially (see get_reg/put_reg below). */
+static const int regoff[] = {
+ [0] = PT_REG(d1),
+ [1] = PT_REG(d2),
+ [2] = PT_REG(d3),
+ [3] = PT_REG(d4),
+ [4] = PT_REG(d5),
+ [5] = SW_REG(d6),
+ [6] = SW_REG(d7),
+ [7] = PT_REG(a0),
+ [8] = PT_REG(a1),
+ [9] = PT_REG(a2),
+ [10] = SW_REG(a3),
+ [11] = SW_REG(a4),
+ [12] = SW_REG(a5),
+ [13] = SW_REG(a6),
+ [14] = PT_REG(d0),
+ [15] = -1,
+ [16] = PT_REG(orig_d0),
+ [17] = PT_REG(sr),
+ [18] = PT_REG(pc),
+};
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+static inline long get_reg(struct task_struct *task, int regno)
+{
+ unsigned long *addr;
+
+ if (regno == PT_USP)
+ addr = &task->thread.usp;
+ else if (regno < ARRAY_SIZE(regoff))
+ addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
+ else
+ return 0;
+ /* Need to take stkadj into account. */
+ if (regno == PT_SR || regno == PT_PC) {
+ long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
+ addr = (unsigned long *) ((unsigned long)addr + stkadj);
+ /* The sr is actually a 16 bit register. */
+ if (regno == PT_SR)
+ return *(unsigned short *)addr;
+ }
+ return *addr;
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+static inline int put_reg(struct task_struct *task, int regno,
+ unsigned long data)
+{
+ unsigned long *addr;
+
+ if (regno == PT_USP)
+ addr = &task->thread.usp;
+ else if (regno < ARRAY_SIZE(regoff))
+ addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
+ else
+ return -1;
+ /* Need to take stkadj into account. */
+ if (regno == PT_SR || regno == PT_PC) {
+ long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
+ addr = (unsigned long *) ((unsigned long)addr + stkadj);
+ /* The sr is actually a 16 bit register. */
+ if (regno == PT_SR) {
+ *(unsigned short *)addr = data;
+ return 0;
+ }
+ }
+ *addr = data;
+ return 0;
+}
+
+/*
+ * Make sure the single step bit is not set.
+ */
+static inline void singlestep_disable(struct task_struct *child)
+{
+ unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+ put_reg(child, PT_SR, tmp);
+ clear_tsk_thread_flag(child, TIF_DELAYED_TRACE);
+}
+
+/*
+ * Called by kernel/ptrace.c when detaching..
+ */
+void ptrace_disable(struct task_struct *child)
+{
+ singlestep_disable(child);
+}
+
+void user_enable_single_step(struct task_struct *child)
+{
+ unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+ put_reg(child, PT_SR, tmp | T1_BIT);
+ set_tsk_thread_flag(child, TIF_DELAYED_TRACE);
+}
+
#ifdef CONFIG_MMU
-#include "ptrace_mm.c"
-#else
-#include "ptrace_no.c"
+void user_enable_block_step(struct task_struct *child)
+{
+ unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
+ put_reg(child, PT_SR, tmp | T0_BIT);
+}
#endif
+
+void user_disable_single_step(struct task_struct *child)
+{
+ singlestep_disable(child);
+}
+
+long arch_ptrace(struct task_struct *child, long request,
+ unsigned long addr, unsigned long data)
+{
+ unsigned long tmp;
+ int i, ret = 0;
+ int regno = addr >> 2; /* temporary hack. */
+ unsigned long __user *datap = (unsigned long __user *) data;
+
+ switch (request) {
+ /* read the word at location addr in the USER area. */
+ case PTRACE_PEEKUSR:
+ if (addr & 3)
+ goto out_eio;
+
+ if (regno >= 0 && regno < 19) {
+ tmp = get_reg(child, regno);
+ } else if (regno >= 21 && regno < 49) {
+ tmp = child->thread.fp[regno - 21];
+ /* Convert internal fpu reg representation
+ * into long double format
+ */
+ if (FPU_IS_EMU && (regno < 45) && !(regno % 3))
+ tmp = ((tmp & 0xffff0000) << 15) |
+ ((tmp & 0x0000ffff) << 16);
+#ifndef CONFIG_MMU
+ } else if (regno == 49) {
+ tmp = child->mm->start_code;
+ } else if (regno == 50) {
+ tmp = child->mm->start_data;
+ } else if (regno == 51) {
+ tmp = child->mm->end_code;
+#endif
+ } else
+ goto out_eio;
+ ret = put_user(tmp, datap);
+ break;
+
+ case PTRACE_POKEUSR:
+ /* write the word at location addr in the USER area */
+ if (addr & 3)
+ goto out_eio;
+
+ if (regno == PT_SR) {
+ data &= SR_MASK;
+ data |= get_reg(child, PT_SR) & ~SR_MASK;
+ }
+ if (regno >= 0 && regno < 19) {
+ if (put_reg(child, regno, data))
+ goto out_eio;
+ } else if (regno >= 21 && regno < 48) {
+ /* Convert long double format
+ * into internal fpu reg representation
+ */
+ if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) {
+ data <<= 15;
+ data = (data & 0xffff0000) |
+ ((data & 0x0000ffff) >> 1);
+ }
+ child->thread.fp[regno - 21] = data;
+ } else
+ goto out_eio;
+ break;
+
+ case PTRACE_GETREGS: /* Get all gp regs from the child. */
+ for (i = 0; i < 19; i++) {
+ tmp = get_reg(child, i);
+ ret = put_user(tmp, datap);
+ if (ret)
+ break;
+ datap++;
+ }
+ break;
+
+ case PTRACE_SETREGS: /* Set all gp regs in the child. */
+ for (i = 0; i < 19; i++) {
+ ret = get_user(tmp, datap);
+ if (ret)
+ break;
+ if (i == PT_SR) {
+ tmp &= SR_MASK;
+ tmp |= get_reg(child, PT_SR) & ~SR_MASK;
+ }
+ put_reg(child, i, tmp);
+ datap++;
+ }
+ break;
+
+ case PTRACE_GETFPREGS: /* Get the child FPU state. */
+ if (copy_to_user(datap, &child->thread.fp,
+ sizeof(struct user_m68kfp_struct)))
+ ret = -EFAULT;
+ break;
+
+ case PTRACE_SETFPREGS: /* Set the child FPU state. */
+ if (copy_from_user(&child->thread.fp, datap,
+ sizeof(struct user_m68kfp_struct)))
+ ret = -EFAULT;
+ break;
+
+ case PTRACE_GET_THREAD_AREA:
+ ret = put_user(task_thread_info(child)->tp_value, datap);
+ break;
+
+ default:
+ ret = ptrace_request(child, request, addr, data);
+ break;
+ }
+
+ return ret;
+out_eio:
+ return -EIO;
+}
+
+asmlinkage void syscall_trace(void)
+{
+ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+ ? 0x80 : 0));
+ /*
+ * this isn't the same as continuing with a signal, but it will do
+ * for normal use. strace only continues with a signal if the
+ * stopping signal is not SIGTRAP. -brl
+ */
+ if (current->exit_code) {
+ send_sig(current->exit_code, current, 1);
+ current->exit_code = 0;
+ }
+}
+
+#ifdef CONFIG_COLDFIRE
+asmlinkage int syscall_trace_enter(void)
+{
+ int ret = 0;
+
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ ret = tracehook_report_syscall_entry(task_pt_regs(current));
+ return ret;
+}
+
+asmlinkage void syscall_trace_leave(void)
+{
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(task_pt_regs(current), 0);
+}
+#endif /* CONFIG_COLDFIRE */
diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c
deleted file mode 100644
index 7bc999b..0000000
--- a/arch/m68k/kernel/ptrace_mm.c
+++ /dev/null
@@ -1,295 +0,0 @@
-/*
- * linux/arch/m68k/kernel/ptrace.c
- *
- * Copyright (C) 1994 by Hamish Macdonald
- * Taken from linux/kernel/ptrace.c and modified for M680x0.
- * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License. See the file COPYING in the main directory of
- * this archive for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/signal.h>
-#include <linux/tracehook.h>
-
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/* determines which bits in the SR the user has access to. */
-/* 1 = access 0 = no access */
-#define SR_MASK 0x001f
-
-/* sets the trace bits. */
-#define TRACE_BITS 0xC000
-#define T1_BIT 0x8000
-#define T0_BIT 0x4000
-
-/* Find the stack offset for a register, relative to thread.esp0. */
-#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg)
-#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \
- - sizeof(struct switch_stack))
-/* Mapping from PT_xxx to the stack offset at which the register is
- saved. Notice that usp has no stack-slot and needs to be treated
- specially (see get_reg/put_reg below). */
-static const int regoff[] = {
- [0] = PT_REG(d1),
- [1] = PT_REG(d2),
- [2] = PT_REG(d3),
- [3] = PT_REG(d4),
- [4] = PT_REG(d5),
- [5] = SW_REG(d6),
- [6] = SW_REG(d7),
- [7] = PT_REG(a0),
- [8] = PT_REG(a1),
- [9] = PT_REG(a2),
- [10] = SW_REG(a3),
- [11] = SW_REG(a4),
- [12] = SW_REG(a5),
- [13] = SW_REG(a6),
- [14] = PT_REG(d0),
- [15] = -1,
- [16] = PT_REG(orig_d0),
- [17] = PT_REG(sr),
- [18] = PT_REG(pc),
-};
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-static inline long get_reg(struct task_struct *task, int regno)
-{
- unsigned long *addr;
-
- if (regno == PT_USP)
- addr = &task->thread.usp;
- else if (regno < ARRAY_SIZE(regoff))
- addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
- else
- return 0;
- /* Need to take stkadj into account. */
- if (regno == PT_SR || regno == PT_PC) {
- long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
- addr = (unsigned long *) ((unsigned long)addr + stkadj);
- /* The sr is actually a 16 bit register. */
- if (regno == PT_SR)
- return *(unsigned short *)addr;
- }
- return *addr;
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-static inline int put_reg(struct task_struct *task, int regno,
- unsigned long data)
-{
- unsigned long *addr;
-
- if (regno == PT_USP)
- addr = &task->thread.usp;
- else if (regno < ARRAY_SIZE(regoff))
- addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
- else
- return -1;
- /* Need to take stkadj into account. */
- if (regno == PT_SR || regno == PT_PC) {
- long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj));
- addr = (unsigned long *) ((unsigned long)addr + stkadj);
- /* The sr is actually a 16 bit register. */
- if (regno == PT_SR) {
- *(unsigned short *)addr = data;
- return 0;
- }
- }
- *addr = data;
- return 0;
-}
-
-/*
- * Make sure the single step bit is not set.
- */
-static inline void singlestep_disable(struct task_struct *child)
-{
- unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
- put_reg(child, PT_SR, tmp);
- clear_tsk_thread_flag(child, TIF_DELAYED_TRACE);
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- */
-void ptrace_disable(struct task_struct *child)
-{
- singlestep_disable(child);
-}
-
-void user_enable_single_step(struct task_struct *child)
-{
- unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
- put_reg(child, PT_SR, tmp | T1_BIT);
- set_tsk_thread_flag(child, TIF_DELAYED_TRACE);
-}
-
-void user_enable_block_step(struct task_struct *child)
-{
- unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS;
- put_reg(child, PT_SR, tmp | T0_BIT);
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- singlestep_disable(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- unsigned long tmp;
- int i, ret = 0;
- int regno = addr >> 2; /* temporary hack. */
- unsigned long __user *datap = (unsigned long __user *) data;
-
- switch (request) {
- /* read the word at location addr in the USER area. */
- case PTRACE_PEEKUSR:
- if (addr & 3)
- goto out_eio;
-
- if (regno >= 0 && regno < 19) {
- tmp = get_reg(child, regno);
- } else if (regno >= 21 && regno < 49) {
- tmp = child->thread.fp[regno - 21];
- /* Convert internal fpu reg representation
- * into long double format
- */
- if (FPU_IS_EMU && (regno < 45) && !(regno % 3))
- tmp = ((tmp & 0xffff0000) << 15) |
- ((tmp & 0x0000ffff) << 16);
- } else
- goto out_eio;
- ret = put_user(tmp, datap);
- break;
-
- case PTRACE_POKEUSR:
- /* write the word at location addr in the USER area */
- if (addr & 3)
- goto out_eio;
-
- if (regno == PT_SR) {
- data &= SR_MASK;
- data |= get_reg(child, PT_SR) & ~SR_MASK;
- }
- if (regno >= 0 && regno < 19) {
- if (put_reg(child, regno, data))
- goto out_eio;
- } else if (regno >= 21 && regno < 48) {
- /* Convert long double format
- * into internal fpu reg representation
- */
- if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) {
- data <<= 15;
- data = (data & 0xffff0000) |
- ((data & 0x0000ffff) >> 1);
- }
- child->thread.fp[regno - 21] = data;
- } else
- goto out_eio;
- break;
-
- case PTRACE_GETREGS: /* Get all gp regs from the child. */
- for (i = 0; i < 19; i++) {
- tmp = get_reg(child, i);
- ret = put_user(tmp, datap);
- if (ret)
- break;
- datap++;
- }
- break;
-
- case PTRACE_SETREGS: /* Set all gp regs in the child. */
- for (i = 0; i < 19; i++) {
- ret = get_user(tmp, datap);
- if (ret)
- break;
- if (i == PT_SR) {
- tmp &= SR_MASK;
- tmp |= get_reg(child, PT_SR) & ~SR_MASK;
- }
- put_reg(child, i, tmp);
- datap++;
- }
- break;
-
- case PTRACE_GETFPREGS: /* Get the child FPU state. */
- if (copy_to_user(datap, &child->thread.fp,
- sizeof(struct user_m68kfp_struct)))
- ret = -EFAULT;
- break;
-
- case PTRACE_SETFPREGS: /* Set the child FPU state. */
- if (copy_from_user(&child->thread.fp, datap,
- sizeof(struct user_m68kfp_struct)))
- ret = -EFAULT;
- break;
-
- case PTRACE_GET_THREAD_AREA:
- ret = put_user(task_thread_info(child)->tp_value, datap);
- break;
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
-
- return ret;
-out_eio:
- return -EIO;
-}
-
-asmlinkage void syscall_trace(void)
-{
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
- ? 0x80 : 0));
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
-
-#ifdef CONFIG_COLDFIRE
-asmlinkage int syscall_trace_enter(void)
-{
- int ret = 0;
-
- if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(task_pt_regs(current));
- return ret;
-}
-
-asmlinkage void syscall_trace_leave(void)
-{
- if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(task_pt_regs(current), 0);
-}
-#endif /* CONFIG_COLDFIRE */
diff --git a/arch/m68k/kernel/ptrace_no.c b/arch/m68k/kernel/ptrace_no.c
deleted file mode 100644
index 6709fb7..0000000
--- a/arch/m68k/kernel/ptrace_no.c
+++ /dev/null
@@ -1,255 +0,0 @@
-/*
- * linux/arch/m68knommu/kernel/ptrace.c
- *
- * Copyright (C) 1994 by Hamish Macdonald
- * Taken from linux/kernel/ptrace.c and modified for M680x0.
- * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
- *
- * This file is subject to the terms and conditions of the GNU General
- * Public License. See the file COPYING in the main directory of
- * this archive for more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/errno.h>
-#include <linux/ptrace.h>
-#include <linux/user.h>
-#include <linux/signal.h>
-#include <linux/tracehook.h>
-
-#include <asm/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/* determines which bits in the SR the user has access to. */
-/* 1 = access 0 = no access */
-#define SR_MASK 0x001f
-
-/* sets the trace bits. */
-#define TRACE_BITS 0x8000
-
-/* Find the stack offset for a register, relative to thread.esp0. */
-#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg)
-#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \
- - sizeof(struct switch_stack))
-/* Mapping from PT_xxx to the stack offset at which the register is
- saved. Notice that usp has no stack-slot and needs to be treated
- specially (see get_reg/put_reg below). */
-static int regoff[] = {
- PT_REG(d1), PT_REG(d2), PT_REG(d3), PT_REG(d4),
- PT_REG(d5), SW_REG(d6), SW_REG(d7), PT_REG(a0),
- PT_REG(a1), PT_REG(a2), SW_REG(a3), SW_REG(a4),
- SW_REG(a5), SW_REG(a6), PT_REG(d0), -1,
- PT_REG(orig_d0), PT_REG(sr), PT_REG(pc),
-};
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-static inline long get_reg(struct task_struct *task, int regno)
-{
- unsigned long *addr;
-
- if (regno == PT_USP)
- addr = &task->thread.usp;
- else if (regno < ARRAY_SIZE(regoff))
- addr = (unsigned long *)(task->thread.esp0 + regoff[regno]);
- else
- return 0;
- return *addr;
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-static inline int put_reg(struct task_struct *task, int regno,
- unsigned long data)
-{
- unsigned long *addr;
-
- if (regno == PT_USP)
- addr = &task->thread.usp;
- else if (regno < ARRAY_SIZE(regoff))
- addr = (unsigned long *) (task->thread.esp0 + regoff[regno]);
- else
- return -1;
- *addr = data;
- return 0;
-}
-
-void user_enable_single_step(struct task_struct *task)
-{
- unsigned long srflags;
- srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16);
- put_reg(task, PT_SR, srflags);
-}
-
-void user_disable_single_step(struct task_struct *task)
-{
- unsigned long srflags;
- srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16);
- put_reg(task, PT_SR, srflags);
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Make sure the single step bit is not set.
- */
-void ptrace_disable(struct task_struct *child)
-{
- /* make sure the single step bit is not set. */
- user_disable_single_step(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- int ret;
- int regno = addr >> 2;
- unsigned long __user *datap = (unsigned long __user *) data;
-
- switch (request) {
- /* read the word at location addr in the USER area. */
- case PTRACE_PEEKUSR: {
- unsigned long tmp;
-
- ret = -EIO;
- if ((addr & 3) || addr > sizeof(struct user) - 3)
- break;
-
- tmp = 0; /* Default return condition */
- ret = -EIO;
- if (regno < 19) {
- tmp = get_reg(child, regno);
- if (regno == PT_SR)
- tmp >>= 16;
- } else if (regno >= 21 && regno < 49) {
- tmp = child->thread.fp[regno - 21];
- } else if (regno == 49) {
- tmp = child->mm->start_code;
- } else if (regno == 50) {
- tmp = child->mm->start_data;
- } else if (regno == 51) {
- tmp = child->mm->end_code;
- } else
- break;
- ret = put_user(tmp, datap);
- break;
- }
-
- case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
- ret = -EIO;
- if ((addr & 3) || addr > sizeof(struct user) - 3)
- break;
-
- if (regno == PT_SR) {
- data &= SR_MASK;
- data <<= 16;
- data |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
- }
- if (regno < 19) {
- if (put_reg(child, regno, data))
- break;
- ret = 0;
- break;
- }
- if (regno >= 21 && regno < 48)
- {
- child->thread.fp[regno - 21] = data;
- ret = 0;
- }
- break;
-
- case PTRACE_GETREGS: { /* Get all gp regs from the child. */
- int i;
- unsigned long tmp;
- for (i = 0; i < 19; i++) {
- tmp = get_reg(child, i);
- if (i == PT_SR)
- tmp >>= 16;
- if (put_user(tmp, datap)) {
- ret = -EFAULT;
- break;
- }
- datap++;
- }
- ret = 0;
- break;
- }
-
- case PTRACE_SETREGS: { /* Set all gp regs in the child. */
- int i;
- unsigned long tmp;
- for (i = 0; i < 19; i++) {
- if (get_user(tmp, datap)) {
- ret = -EFAULT;
- break;
- }
- if (i == PT_SR) {
- tmp &= SR_MASK;
- tmp <<= 16;
- tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16);
- }
- put_reg(child, i, tmp);
- datap++;
- }
- ret = 0;
- break;
- }
-
-#ifdef PTRACE_GETFPREGS
- case PTRACE_GETFPREGS: { /* Get the child FPU state. */
- ret = 0;
- if (copy_to_user(datap, &child->thread.fp,
- sizeof(struct user_m68kfp_struct)))
- ret = -EFAULT;
- break;
- }
-#endif
-
-#ifdef PTRACE_SETFPREGS
- case PTRACE_SETFPREGS: { /* Set the child FPU state. */
- ret = 0;
- if (copy_from_user(&child->thread.fp, datap,
- sizeof(struct user_m68kfp_struct)))
- ret = -EFAULT;
- break;
- }
-#endif
-
- case PTRACE_GET_THREAD_AREA:
- ret = put_user(task_thread_info(child)->tp_value, datap);
- break;
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
- return ret;
-}
-
-asmlinkage int syscall_trace_enter(void)
-{
- int ret = 0;
-
- if (test_thread_flag(TIF_SYSCALL_TRACE))
- ret = tracehook_report_syscall_entry(task_pt_regs(current));
- return ret;
-}
-
-asmlinkage void syscall_trace_leave(void)
-{
- if (test_thread_flag(TIF_SYSCALL_TRACE))
- tracehook_report_syscall_exit(task_pt_regs(current), 0);
-}