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-rw-r--r--arch/frv/kernel/ptrace.c377
1 files changed, 0 insertions, 377 deletions
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c
deleted file mode 100644
index 49768401ce0f..000000000000
--- a/arch/frv/kernel/ptrace.c
+++ /dev/null
@@ -1,377 +0,0 @@
-/* ptrace.c: FRV specific parts of process tracing
- *
- * Copyright (C) 2003-5 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * - Derived from arch/m68k/kernel/ptrace.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#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/security.h>
-#include <linux/signal.h>
-#include <linux/regset.h>
-#include <linux/elf.h>
-#include <linux/tracehook.h>
-
-#include <linux/uaccess.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-#include <asm/unistd.h>
-
-/*
- * does not yet catch signals sent when the child dies.
- * in exit.c or in signal.c.
- */
-
-/*
- * retrieve the contents of FRV userspace general registers
- */
-static int genregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- const struct user_int_regs *iregs = &target->thread.user->i;
- int ret;
-
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- iregs, 0, sizeof(*iregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- sizeof(*iregs), -1);
-}
-
-/*
- * update the contents of the FRV userspace general registers
- */
-static int genregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct user_int_regs *iregs = &target->thread.user->i;
- unsigned int offs_gr0, offs_gr1;
- int ret;
-
- /* not allowed to set PSR or __status */
- if (pos < offsetof(struct user_int_regs, psr) + sizeof(long) &&
- pos + count > offsetof(struct user_int_regs, psr))
- return -EIO;
-
- if (pos < offsetof(struct user_int_regs, __status) + sizeof(long) &&
- pos + count > offsetof(struct user_int_regs, __status))
- return -EIO;
-
- /* set the control regs */
- offs_gr0 = offsetof(struct user_int_regs, gr[0]);
- offs_gr1 = offsetof(struct user_int_regs, gr[1]);
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- iregs, 0, offs_gr0);
- if (ret < 0)
- return ret;
-
- /* skip GR0/TBR */
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- offs_gr0, offs_gr1);
- if (ret < 0)
- return ret;
-
- /* set the general regs */
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- &iregs->gr[1], offs_gr1, sizeof(*iregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- sizeof(*iregs), -1);
-}
-
-/*
- * retrieve the contents of FRV userspace FP/Media registers
- */
-static int fpmregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- const struct user_fpmedia_regs *fpregs = &target->thread.user->f;
- int ret;
-
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- fpregs, 0, sizeof(*fpregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- sizeof(*fpregs), -1);
-}
-
-/*
- * update the contents of the FRV userspace FP/Media registers
- */
-static int fpmregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct user_fpmedia_regs *fpregs = &target->thread.user->f;
- int ret;
-
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- fpregs, 0, sizeof(*fpregs));
- if (ret < 0)
- return ret;
-
- return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- sizeof(*fpregs), -1);
-}
-
-/*
- * determine if the FP/Media registers have actually been used
- */
-static int fpmregs_active(struct task_struct *target,
- const struct user_regset *regset)
-{
- return tsk_used_math(target) ? regset->n : 0;
-}
-
-/*
- * Define the register sets available on the FRV under Linux
- */
-enum frv_regset {
- REGSET_GENERAL,
- REGSET_FPMEDIA,
-};
-
-static const struct user_regset frv_regsets[] = {
- /*
- * General register format is:
- * PSR, ISR, CCR, CCCR, LR, LCR, PC, (STATUS), SYSCALLNO, ORIG_G8
- * GNER0-1, IACC0, TBR, GR1-63
- */
- [REGSET_GENERAL] = {
- .core_note_type = NT_PRSTATUS,
- .n = ELF_NGREG,
- .size = sizeof(long),
- .align = sizeof(long),
- .get = genregs_get,
- .set = genregs_set,
- },
- /*
- * FPU/Media register format is:
- * FR0-63, FNER0-1, MSR0-1, ACC0-7, ACCG0-8, FSR
- */
- [REGSET_FPMEDIA] = {
- .core_note_type = NT_PRFPREG,
- .n = sizeof(struct user_fpmedia_regs) / sizeof(long),
- .size = sizeof(long),
- .align = sizeof(long),
- .get = fpmregs_get,
- .set = fpmregs_set,
- .active = fpmregs_active,
- },
-};
-
-static const struct user_regset_view user_frv_native_view = {
- .name = "frv",
- .e_machine = EM_FRV,
- .regsets = frv_regsets,
- .n = ARRAY_SIZE(frv_regsets),
-};
-
-const struct user_regset_view *task_user_regset_view(struct task_struct *task)
-{
- return &user_frv_native_view;
-}
-
-/*
- * Get contents of register REGNO in task TASK.
- */
-static inline long get_reg(struct task_struct *task, int regno)
-{
- struct user_context *user = task->thread.user;
-
- if (regno < 0 || regno >= PT__END)
- return 0;
-
- return ((unsigned long *) user)[regno];
-}
-
-/*
- * Write contents of register REGNO in task TASK.
- */
-static inline int put_reg(struct task_struct *task, int regno,
- unsigned long data)
-{
- struct user_context *user = task->thread.user;
-
- if (regno < 0 || regno >= PT__END)
- return -EIO;
-
- switch (regno) {
- case PT_GR(0):
- return 0;
- case PT_PSR:
- case PT__STATUS:
- return -EIO;
- default:
- ((unsigned long *) user)[regno] = data;
- return 0;
- }
-}
-
-/*
- * Called by kernel/ptrace.c when detaching..
- *
- * Control h/w single stepping
- */
-void user_enable_single_step(struct task_struct *child)
-{
- child->thread.frame0->__status |= REG__STATUS_STEP;
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- child->thread.frame0->__status &= ~REG__STATUS_STEP;
-}
-
-void ptrace_disable(struct task_struct *child)
-{
- user_disable_single_step(child);
-}
-
-long arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- unsigned long tmp;
- 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: {
- tmp = 0;
- ret = -EIO;
- if (addr & 3)
- break;
-
- ret = 0;
- switch (regno) {
- case 0 ... PT__END - 1:
- tmp = get_reg(child, regno);
- break;
-
- case PT__END + 0:
- tmp = child->mm->end_code - child->mm->start_code;
- break;
-
- case PT__END + 1:
- tmp = child->mm->end_data - child->mm->start_data;
- break;
-
- case PT__END + 2:
- tmp = child->mm->start_stack - child->mm->start_brk;
- break;
-
- case PT__END + 3:
- tmp = child->mm->start_code;
- break;
-
- case PT__END + 4:
- tmp = child->mm->start_stack;
- break;
-
- default:
- ret = -EIO;
- break;
- }
-
- if (ret == 0)
- ret = put_user(tmp, datap);
- break;
- }
-
- case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
- ret = -EIO;
- if (addr & 3)
- break;
-
- switch (regno) {
- case 0 ... PT__END - 1:
- ret = put_reg(child, regno, data);
- break;
- }
- break;
-
- case PTRACE_GETREGS: /* Get all integer regs from the child. */
- return copy_regset_to_user(child, &user_frv_native_view,
- REGSET_GENERAL,
- 0, sizeof(child->thread.user->i),
- datap);
-
- case PTRACE_SETREGS: /* Set all integer regs in the child. */
- return copy_regset_from_user(child, &user_frv_native_view,
- REGSET_GENERAL,
- 0, sizeof(child->thread.user->i),
- datap);
-
- case PTRACE_GETFPREGS: /* Get the child FP/Media state. */
- return copy_regset_to_user(child, &user_frv_native_view,
- REGSET_FPMEDIA,
- 0, sizeof(child->thread.user->f),
- datap);
-
- case PTRACE_SETFPREGS: /* Set the child FP/Media state. */
- return copy_regset_from_user(child, &user_frv_native_view,
- REGSET_FPMEDIA,
- 0, sizeof(child->thread.user->f),
- datap);
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
- return ret;
-}
-
-/*
- * handle tracing of system call entry
- * - return the revised system call number or ULONG_MAX to cause ENOSYS
- */
-asmlinkage unsigned long syscall_trace_entry(void)
-{
- __frame->__status |= REG__STATUS_SYSC_ENTRY;
- if (tracehook_report_syscall_entry(__frame)) {
- /* tracing decided this syscall should not happen, so
- * We'll return a bogus call number to get an ENOSYS
- * error, but leave the original number in
- * __frame->syscallno
- */
- return ULONG_MAX;
- }
-
- return __frame->syscallno;
-}
-
-/*
- * handle tracing of system call exit
- */
-asmlinkage void syscall_trace_exit(void)
-{
- __frame->__status |= REG__STATUS_SYSC_EXIT;
- tracehook_report_syscall_exit(__frame, 0);
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.