diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/hexagon/kernel/ptrace.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/hexagon/kernel/ptrace.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/ANDROID_3.4.5/arch/hexagon/kernel/ptrace.c b/ANDROID_3.4.5/arch/hexagon/kernel/ptrace.c deleted file mode 100644 index 96c3b2c4..00000000 --- a/ANDROID_3.4.5/arch/hexagon/kernel/ptrace.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * Ptrace support for Hexagon - * - * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -#include <generated/compile.h> - -#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/regset.h> -#include <linux/user.h> -#include <linux/elf.h> - -#include <asm/user.h> - -static int genregs_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - int ret; - unsigned int dummy; - struct pt_regs *regs = task_pt_regs(target); - - - if (!regs) - return -EIO; - - /* The general idea here is that the copyout must happen in - * exactly the same order in which the userspace expects these - * regs. Now, the sequence in userspace does not match the - * sequence in the kernel, so everything past the 32 gprs - * happens one at a time. - */ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - ®s->r00, 0, 32*sizeof(unsigned long)); - -#define ONEXT(KPT_REG, USR_REG) \ - if (!ret) \ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, \ - KPT_REG, offsetof(struct user_regs_struct, USR_REG), \ - offsetof(struct user_regs_struct, USR_REG) + \ - sizeof(unsigned long)); - - /* Must be exactly same sequence as struct user_regs_struct */ - ONEXT(®s->sa0, sa0); - ONEXT(®s->lc0, lc0); - ONEXT(®s->sa1, sa1); - ONEXT(®s->lc1, lc1); - ONEXT(®s->m0, m0); - ONEXT(®s->m1, m1); - ONEXT(®s->usr, usr); - ONEXT(®s->preds, p3_0); - ONEXT(®s->gp, gp); - ONEXT(®s->ugp, ugp); - ONEXT(&pt_elr(regs), pc); - dummy = pt_cause(regs); - ONEXT(&dummy, cause); - ONEXT(&pt_badva(regs), badva); - - /* Pad the rest with zeros, if needed */ - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - offsetof(struct user_regs_struct, pad1), -1); - return ret; -} - -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) -{ - int ret; - unsigned long bucket; - struct pt_regs *regs = task_pt_regs(target); - - if (!regs) - return -EIO; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - ®s->r00, 0, 32*sizeof(unsigned long)); - -#define INEXT(KPT_REG, USR_REG) \ - if (!ret) \ - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, \ - KPT_REG, offsetof(struct user_regs_struct, USR_REG), \ - offsetof(struct user_regs_struct, USR_REG) + \ - sizeof(unsigned long)); - - /* Must be exactly same sequence as struct user_regs_struct */ - INEXT(®s->sa0, sa0); - INEXT(®s->lc0, lc0); - INEXT(®s->sa1, sa1); - INEXT(®s->lc1, lc1); - INEXT(®s->m0, m0); - INEXT(®s->m1, m1); - INEXT(®s->usr, usr); - INEXT(®s->preds, p3_0); - INEXT(®s->gp, gp); - INEXT(®s->ugp, ugp); - INEXT(&pt_elr(regs), pc); - - /* CAUSE and BADVA aren't writeable. */ - INEXT(&bucket, cause); - INEXT(&bucket, badva); - - /* Ignore the rest, if needed */ - if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - offsetof(struct user_regs_struct, pad1), -1); - - if (ret) - return ret; - - /* - * This is special; SP is actually restored by the VM via the - * special event record which is set by the special trap. - */ - regs->hvmer.vmpsp = regs->r29; - return 0; -} - -enum hexagon_regset { - REGSET_GENERAL, -}; - -static const struct user_regset hexagon_regsets[] = { - [REGSET_GENERAL] = { - .core_note_type = NT_PRSTATUS, - .n = ELF_NGREG, - .size = sizeof(unsigned long), - .align = sizeof(unsigned long), - .get = genregs_get, - .set = genregs_set, - }, -}; - -static const struct user_regset_view hexagon_user_view = { - .name = UTS_MACHINE, - .e_machine = ELF_ARCH, - .ei_osabi = ELF_OSABI, - .regsets = hexagon_regsets, - .n = ARRAY_SIZE(hexagon_regsets) -}; - -const struct user_regset_view *task_user_regset_view(struct task_struct *task) -{ - return &hexagon_user_view; -} - -void ptrace_disable(struct task_struct *child) -{ - /* Boilerplate - resolves to null inline if no HW single-step */ - user_disable_single_step(child); -} - -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - return ptrace_request(child, request, addr, data); -} |