^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * SuperH process tracing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1999, 2000 Kaz Kojima & Niibe Yutaka
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2002 - 2009 Paul Mundt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Audit support by Yuichi Nakamura <ynakam@hitachisoft.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/user.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/audit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/seccomp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/tracehook.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/elf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/regset.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/hw_breakpoint.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/processor.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/fpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define CREATE_TRACE_POINTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <trace/events/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * This routine will get a word off of the process kernel stack.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static inline int get_stack_long(struct task_struct *task, int offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) unsigned char *stack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) stack = (unsigned char *)task_pt_regs(task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) stack += offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return (*((int *)stack));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * This routine will put a word on the process kernel stack.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static inline int put_stack_long(struct task_struct *task, int offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) unsigned long data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned char *stack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) stack = (unsigned char *)task_pt_regs(task);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) stack += offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) *(unsigned long *) stack = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) void ptrace_triggered(struct perf_event *bp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct perf_sample_data *data, struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct perf_event_attr attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * Disable the breakpoint request here since ptrace has defined a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * one-shot behaviour for breakpoint exceptions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) attr = bp->attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) attr.disabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) modify_user_hw_breakpoint(bp, &attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int set_single_step(struct task_struct *tsk, unsigned long addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct thread_struct *thread = &tsk->thread;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct perf_event *bp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) struct perf_event_attr attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) bp = thread->ptrace_bps[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (!bp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) ptrace_breakpoint_init(&attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) attr.bp_addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) attr.bp_len = HW_BREAKPOINT_LEN_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) attr.bp_type = HW_BREAKPOINT_R;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) bp = register_user_hw_breakpoint(&attr, ptrace_triggered,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) NULL, tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (IS_ERR(bp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return PTR_ERR(bp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) thread->ptrace_bps[0] = bp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) attr = bp->attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) attr.bp_addr = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* reenable breakpoint */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) attr.disabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) err = modify_user_hw_breakpoint(bp, &attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (unlikely(err))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) void user_enable_single_step(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) unsigned long pc = get_stack_long(child, offsetof(struct pt_regs, pc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) set_tsk_thread_flag(child, TIF_SINGLESTEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) set_single_step(child, pc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) void user_disable_single_step(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) clear_tsk_thread_flag(child, TIF_SINGLESTEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Called by kernel/ptrace.c when detaching..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * Make sure single step bits etc are not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) void ptrace_disable(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) user_disable_single_step(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static int genregs_get(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct membuf to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) const struct pt_regs *regs = task_pt_regs(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return membuf_write(&to, regs, sizeof(struct pt_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static int genregs_set(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) unsigned int pos, unsigned int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) const void *kbuf, const void __user *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct pt_regs *regs = task_pt_regs(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) regs->regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 0, 16 * sizeof(unsigned long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) if (!ret && count > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) ®s->pc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) offsetof(struct pt_regs, pc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) sizeof(struct pt_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) sizeof(struct pt_regs), -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) #ifdef CONFIG_SH_FPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static int fpregs_get(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct membuf to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) ret = init_fpu(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return membuf_write(&to, target->thread.xstate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) sizeof(struct user_fpu_struct));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) static int fpregs_set(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) unsigned int pos, unsigned int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) const void *kbuf, const void __user *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) ret = init_fpu(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) set_stopped_child_used_math(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if ((boot_cpu_data.flags & CPU_HAS_FPU))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) &target->thread.xstate->hardfpu, 0, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) &target->thread.xstate->softfpu, 0, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) static int fpregs_active(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) const struct user_regset *regset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return tsk_used_math(target) ? regset->n : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #ifdef CONFIG_SH_DSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static int dspregs_get(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct membuf to)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) const struct pt_dspregs *regs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) (struct pt_dspregs *)&target->thread.dsp_status.dsp_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) return membuf_write(&to, regs, sizeof(struct pt_dspregs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) static int dspregs_set(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const struct user_regset *regset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) unsigned int pos, unsigned int count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) const void *kbuf, const void __user *ubuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct pt_dspregs *regs =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) (struct pt_dspregs *)&target->thread.dsp_status.dsp_regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 0, sizeof(struct pt_dspregs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) sizeof(struct pt_dspregs), -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static int dspregs_active(struct task_struct *target,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) const struct user_regset *regset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) struct pt_regs *regs = task_pt_regs(target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return regs->sr & SR_DSP ? regset->n : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) const struct pt_regs_offset regoffset_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) REGS_OFFSET_NAME(0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) REGS_OFFSET_NAME(1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) REGS_OFFSET_NAME(2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) REGS_OFFSET_NAME(3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) REGS_OFFSET_NAME(4),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) REGS_OFFSET_NAME(5),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) REGS_OFFSET_NAME(6),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) REGS_OFFSET_NAME(7),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) REGS_OFFSET_NAME(8),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) REGS_OFFSET_NAME(9),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) REGS_OFFSET_NAME(10),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) REGS_OFFSET_NAME(11),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) REGS_OFFSET_NAME(12),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) REGS_OFFSET_NAME(13),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) REGS_OFFSET_NAME(14),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) REGS_OFFSET_NAME(15),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) REG_OFFSET_NAME(pc),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) REG_OFFSET_NAME(pr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) REG_OFFSET_NAME(sr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) REG_OFFSET_NAME(gbr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) REG_OFFSET_NAME(mach),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) REG_OFFSET_NAME(macl),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) REG_OFFSET_NAME(tra),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) REG_OFFSET_END,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * These are our native regset flavours.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) enum sh_regset {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) REGSET_GENERAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #ifdef CONFIG_SH_FPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) REGSET_FPU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) #ifdef CONFIG_SH_DSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) REGSET_DSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) static const struct user_regset sh_regsets[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * Format is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * R0 --> R15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * PC, PR, SR, GBR, MACH, MACL, TRA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) [REGSET_GENERAL] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) .core_note_type = NT_PRSTATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) .n = ELF_NGREG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) .size = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) .align = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) .regset_get = genregs_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) .set = genregs_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #ifdef CONFIG_SH_FPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) [REGSET_FPU] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) .core_note_type = NT_PRFPREG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) .n = sizeof(struct user_fpu_struct) / sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) .size = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .align = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .regset_get = fpregs_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) .set = fpregs_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) .active = fpregs_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) #ifdef CONFIG_SH_DSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) [REGSET_DSP] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) .n = sizeof(struct pt_dspregs) / sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) .size = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) .align = sizeof(long),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) .regset_get = dspregs_get,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) .set = dspregs_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) .active = dspregs_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) static const struct user_regset_view user_sh_native_view = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) .name = "sh",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) .e_machine = EM_SH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) .regsets = sh_regsets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) .n = ARRAY_SIZE(sh_regsets),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) const struct user_regset_view *task_user_regset_view(struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return &user_sh_native_view;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) long arch_ptrace(struct task_struct *child, long request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) unsigned long addr, unsigned long data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) unsigned long __user *datap = (unsigned long __user *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) switch (request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) /* read the word at location addr in the USER area. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) case PTRACE_PEEKUSR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if ((addr & 3) || addr < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) addr > sizeof(struct user) - 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (addr < sizeof(struct pt_regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) tmp = get_stack_long(child, addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) else if (addr >= offsetof(struct user, fpu) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) addr < offsetof(struct user, u_fpvalid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) if (!tsk_used_math(child)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (addr == offsetof(struct user, fpu.fpscr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) tmp = FPSCR_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) unsigned long index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) ret = init_fpu(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) index = addr - offsetof(struct user, fpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) tmp = ((unsigned long *)child->thread.xstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) [index >> 2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) } else if (addr == offsetof(struct user, u_fpvalid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) tmp = !!tsk_used_math(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) else if (addr == PT_TEXT_ADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) tmp = child->mm->start_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) else if (addr == PT_DATA_ADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) tmp = child->mm->start_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) else if (addr == PT_TEXT_END_ADDR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) tmp = child->mm->end_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) else if (addr == PT_TEXT_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) tmp = child->mm->end_code - child->mm->start_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) ret = put_user(tmp, datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if ((addr & 3) || addr < 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) addr > sizeof(struct user) - 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) if (addr < sizeof(struct pt_regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) ret = put_stack_long(child, addr, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) else if (addr >= offsetof(struct user, fpu) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) addr < offsetof(struct user, u_fpvalid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) unsigned long index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) ret = init_fpu(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) index = addr - offsetof(struct user, fpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) set_stopped_child_used_math(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) ((unsigned long *)child->thread.xstate)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) [index >> 2] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) } else if (addr == offsetof(struct user, u_fpvalid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) conditional_stopped_child_used_math(data, child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) case PTRACE_GETREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return copy_regset_to_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) REGSET_GENERAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 0, sizeof(struct pt_regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) case PTRACE_SETREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return copy_regset_from_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) REGSET_GENERAL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 0, sizeof(struct pt_regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) #ifdef CONFIG_SH_FPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) case PTRACE_GETFPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return copy_regset_to_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) REGSET_FPU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 0, sizeof(struct user_fpu_struct),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) case PTRACE_SETFPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return copy_regset_from_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) REGSET_FPU,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 0, sizeof(struct user_fpu_struct),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) #ifdef CONFIG_SH_DSP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) case PTRACE_GETDSPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return copy_regset_to_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) REGSET_DSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 0, sizeof(struct pt_dspregs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) case PTRACE_SETDSPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return copy_regset_from_user(child, &user_sh_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) REGSET_DSP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 0, sizeof(struct pt_dspregs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) datap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ret = ptrace_request(child, request, addr, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) if (test_thread_flag(TIF_SYSCALL_TRACE) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) tracehook_report_syscall_entry(regs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) regs->regs[0] = -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (secure_computing() == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) trace_sys_enter(regs, regs->regs[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) audit_syscall_entry(regs->regs[3], regs->regs[4], regs->regs[5],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) regs->regs[6], regs->regs[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) asmlinkage void do_syscall_trace_leave(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) int step;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) audit_syscall_exit(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) trace_sys_exit(regs, regs->regs[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) step = test_thread_flag(TIF_SINGLESTEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (step || test_thread_flag(TIF_SYSCALL_TRACE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) tracehook_report_syscall_exit(regs, step);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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