diff options
Diffstat (limited to 'arch/sparc64/kernel/ptrace.c')
| -rw-r--r-- | arch/sparc64/kernel/ptrace.c | 1090 |
1 files changed, 0 insertions, 1090 deletions
diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c deleted file mode 100644 index a941c610e7c..00000000000 --- a/arch/sparc64/kernel/ptrace.c +++ /dev/null @@ -1,1090 +0,0 @@ -/* ptrace.c: Sparc process tracing support. - * - * Copyright (C) 1996, 2008 David S. Miller (davem@davemloft.net) - * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * - * Based upon code written by Ross Biro, Linus Torvalds, Bob Manson, - * and David Mosberger. - * - * Added Linux support -miguel (weird, eh?, the original code was meant - * to emulate SunOS). - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/smp.h> -#include <linux/smp_lock.h> -#include <linux/security.h> -#include <linux/seccomp.h> -#include <linux/audit.h> -#include <linux/signal.h> -#include <linux/regset.h> -#include <linux/tracehook.h> -#include <linux/compat.h> -#include <linux/elf.h> - -#include <asm/asi.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/psrcompat.h> -#include <asm/visasm.h> -#include <asm/spitfire.h> -#include <asm/page.h> -#include <asm/cpudata.h> -#include <asm/cacheflush.h> - -#include "entry.h" - -/* #define ALLOW_INIT_TRACING */ - -/* - * Called by kernel/ptrace.c when detaching.. - * - * Make sure single step bits etc are not set. - */ -void ptrace_disable(struct task_struct *child) -{ - /* nothing to do */ -} - -/* To get the necessary page struct, access_process_vm() first calls - * get_user_pages(). This has done a flush_dcache_page() on the - * accessed page. Then our caller (copy_{to,from}_user_page()) did - * to memcpy to read/write the data from that page. - * - * Now, the only thing we have to do is: - * 1) flush the D-cache if it's possible than an illegal alias - * has been created - * 2) flush the I-cache if this is pre-cheetah and we did a write - */ -void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, - unsigned long uaddr, void *kaddr, - unsigned long len, int write) -{ - BUG_ON(len > PAGE_SIZE); - - if (tlb_type == hypervisor) - return; - - preempt_disable(); - -#ifdef DCACHE_ALIASING_POSSIBLE - /* If bit 13 of the kernel address we used to access the - * user page is the same as the virtual address that page - * is mapped to in the user's address space, we can skip the - * D-cache flush. - */ - if ((uaddr ^ (unsigned long) kaddr) & (1UL << 13)) { - unsigned long start = __pa(kaddr); - unsigned long end = start + len; - unsigned long dcache_line_size; - - dcache_line_size = local_cpu_data().dcache_line_size; - - if (tlb_type == spitfire) { - for (; start < end; start += dcache_line_size) - spitfire_put_dcache_tag(start & 0x3fe0, 0x0); - } else { - start &= ~(dcache_line_size - 1); - for (; start < end; start += dcache_line_size) - __asm__ __volatile__( - "stxa %%g0, [%0] %1\n\t" - "membar #Sync" - : /* no outputs */ - : "r" (start), - "i" (ASI_DCACHE_INVALIDATE)); - } - } -#endif - if (write && tlb_type == spitfire) { - unsigned long start = (unsigned long) kaddr; - unsigned long end = start + len; - unsigned long icache_line_size; - - icache_line_size = local_cpu_data().icache_line_size; - - for (; start < end; start += icache_line_size) - flushi(start); - } - - preempt_enable(); -} - -static int get_from_target(struct task_struct *target, unsigned long uaddr, - void *kbuf, int len) -{ - if (target == current) { - if (copy_from_user(kbuf, (void __user *) uaddr, len)) - return -EFAULT; - } else { - int len2 = access_process_vm(target, uaddr, kbuf, len, 0); - if (len2 != len) - return -EFAULT; - } - return 0; -} - -static int set_to_target(struct task_struct *target, unsigned long uaddr, - void *kbuf, int len) -{ - if (target == current) { - if (copy_to_user((void __user *) uaddr, kbuf, len)) - return -EFAULT; - } else { - int len2 = access_process_vm(target, uaddr, kbuf, len, 1); - if (len2 != len) - return -EFAULT; - } - return 0; -} - -static int regwindow64_get(struct task_struct *target, - const struct pt_regs *regs, - struct reg_window *wbuf) -{ - unsigned long rw_addr = regs->u_regs[UREG_I6]; - - if (test_tsk_thread_flag(current, TIF_32BIT)) { - struct reg_window32 win32; - int i; - - if (get_from_target(target, rw_addr, &win32, sizeof(win32))) - return -EFAULT; - for (i = 0; i < 8; i++) - wbuf->locals[i] = win32.locals[i]; - for (i = 0; i < 8; i++) - wbuf->ins[i] = win32.ins[i]; - } else { - rw_addr += STACK_BIAS; - if (get_from_target(target, rw_addr, wbuf, sizeof(*wbuf))) - return -EFAULT; - } - - return 0; -} - -static int regwindow64_set(struct task_struct *target, - const struct pt_regs *regs, - struct reg_window *wbuf) -{ - unsigned long rw_addr = regs->u_regs[UREG_I6]; - - if (test_tsk_thread_flag(current, TIF_32BIT)) { - struct reg_window32 win32; - int i; - - for (i = 0; i < 8; i++) - win32.locals[i] = wbuf->locals[i]; - for (i = 0; i < 8; i++) - win32.ins[i] = wbuf->ins[i]; - - if (set_to_target(target, rw_addr, &win32, sizeof(win32))) - return -EFAULT; - } else { - rw_addr += STACK_BIAS; - if (set_to_target(target, rw_addr, wbuf, sizeof(*wbuf))) - return -EFAULT; - } - - return 0; -} - -enum sparc_regset { - REGSET_GENERAL, - REGSET_FP, -}; - -static int genregs64_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const struct pt_regs *regs = task_pt_regs(target); - int ret; - - if (target == current) - flushw_user(); - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - regs->u_regs, - 0, 16 * sizeof(u64)); - if (!ret && count && pos < (32 * sizeof(u64))) { - struct reg_window window; - - if (regwindow64_get(target, regs, &window)) - return -EFAULT; - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &window, - 16 * sizeof(u64), - 32 * sizeof(u64)); - } - - if (!ret) { - /* TSTATE, TPC, TNPC */ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - ®s->tstate, - 32 * sizeof(u64), - 35 * sizeof(u64)); - } - - if (!ret) { - unsigned long y = regs->y; - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &y, - 35 * sizeof(u64), - 36 * sizeof(u64)); - } - - if (!ret) { - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 36 * sizeof(u64), -1); - - } - return ret; -} - -static int genregs64_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - struct pt_regs *regs = task_pt_regs(target); - int ret; - - if (target == current) - flushw_user(); - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - regs->u_regs, - 0, 16 * sizeof(u64)); - if (!ret && count && pos < (32 * sizeof(u64))) { - struct reg_window window; - - if (regwindow64_get(target, regs, &window)) - return -EFAULT; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &window, - 16 * sizeof(u64), - 32 * sizeof(u64)); - - if (!ret && - regwindow64_set(target, regs, &window)) - return -EFAULT; - } - - if (!ret && count > 0) { - unsigned long tstate; - - /* TSTATE */ - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &tstate, - 32 * sizeof(u64), - 33 * sizeof(u64)); - if (!ret) { - /* Only the condition codes and the "in syscall" - * state can be modified in the %tstate register. - */ - tstate &= (TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); - regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); - regs->tstate |= tstate; - } - } - - if (!ret) { - /* TPC, TNPC */ - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - ®s->tpc, - 33 * sizeof(u64), - 35 * sizeof(u64)); - } - - if (!ret) { - unsigned long y; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &y, - 35 * sizeof(u64), - 36 * sizeof(u64)); - if (!ret) - regs->y = y; - } - - if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 36 * sizeof(u64), -1); - - return ret; -} - -static int fpregs64_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const unsigned long *fpregs = task_thread_info(target)->fpregs; - unsigned long fprs, fsr, gsr; - int ret; - - if (target == current) - save_and_clear_fpu(); - - fprs = task_thread_info(target)->fpsaved[0]; - - if (fprs & FPRS_DL) - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - fpregs, - 0, 16 * sizeof(u64)); - else - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 0, - 16 * sizeof(u64)); - - if (!ret) { - if (fprs & FPRS_DU) - ret = user_regset_copyout(&pos, &count, - &kbuf, &ubuf, - fpregs + 16, - 16 * sizeof(u64), - 32 * sizeof(u64)); - else - ret = user_regset_copyout_zero(&pos, &count, - &kbuf, &ubuf, - 16 * sizeof(u64), - 32 * sizeof(u64)); - } - - if (fprs & FPRS_FEF) { - fsr = task_thread_info(target)->xfsr[0]; - gsr = task_thread_info(target)->gsr[0]; - } else { - fsr = gsr = 0; - } - - if (!ret) - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &fsr, - 32 * sizeof(u64), - 33 * sizeof(u64)); - if (!ret) - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &gsr, - 33 * sizeof(u64), - 34 * sizeof(u64)); - if (!ret) - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &fprs, - 34 * sizeof(u64), - 35 * sizeof(u64)); - - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 35 * sizeof(u64), -1); - - return ret; -} - -static int fpregs64_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - unsigned long *fpregs = task_thread_info(target)->fpregs; - unsigned long fprs; - int ret; - - if (target == current) - save_and_clear_fpu(); - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - fpregs, - 0, 32 * sizeof(u64)); - if (!ret) - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - task_thread_info(target)->xfsr, - 32 * sizeof(u64), - 33 * sizeof(u64)); - if (!ret) - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - task_thread_info(target)->gsr, - 33 * sizeof(u64), - 34 * sizeof(u64)); - - fprs = task_thread_info(target)->fpsaved[0]; - if (!ret && count > 0) { - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &fprs, - 34 * sizeof(u64), - 35 * sizeof(u64)); - } - - fprs |= (FPRS_FEF | FPRS_DL | FPRS_DU); - task_thread_info(target)->fpsaved[0] = fprs; - - if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 35 * sizeof(u64), -1); - return ret; -} - -static const struct user_regset sparc64_regsets[] = { - /* Format is: - * G0 --> G7 - * O0 --> O7 - * L0 --> L7 - * I0 --> I7 - * TSTATE, TPC, TNPC, Y - */ - [REGSET_GENERAL] = { - .core_note_type = NT_PRSTATUS, - .n = 36, - .size = sizeof(u64), .align = sizeof(u64), - .get = genregs64_get, .set = genregs64_set - }, - /* Format is: - * F0 --> F63 - * FSR - * GSR - * FPRS - */ - [REGSET_FP] = { - .core_note_type = NT_PRFPREG, - .n = 35, - .size = sizeof(u64), .align = sizeof(u64), - .get = fpregs64_get, .set = fpregs64_set - }, -}; - -static const struct user_regset_view user_sparc64_view = { - .name = "sparc64", .e_machine = EM_SPARCV9, - .regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets) -}; - -#ifdef CONFIG_COMPAT -static int genregs32_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const struct pt_regs *regs = task_pt_regs(target); - compat_ulong_t __user *reg_window; - compat_ulong_t *k = kbuf; - compat_ulong_t __user *u = ubuf; - compat_ulong_t reg; - - if (target == current) - flushw_user(); - - pos /= sizeof(reg); - count /= sizeof(reg); - - if (kbuf) { - for (; count > 0 && pos < 16; count--) - *k++ = regs->u_regs[pos++]; - - reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; - if (target == current) { - for (; count > 0 && pos < 32; count--) { - if (get_user(*k++, ®_window[pos++])) - return -EFAULT; - } - } else { - for (; count > 0 && pos < 32; count--) { - if (access_process_vm(target, - (unsigned long) - ®_window[pos], - k, sizeof(*k), 0) - != sizeof(*k)) - return -EFAULT; - k++; - pos++; - } - } - } else { - for (; count > 0 && pos < 16; count--) { - if (put_user((compat_ulong_t) regs->u_regs[pos++], u++)) - return -EFAULT; - } - - reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; - if (target == current) { - for (; count > 0 && pos < 32; count--) { - if (get_user(reg, ®_window[pos++]) || - put_user(reg, u++)) - return -EFAULT; - } - } else { - for (; count > 0 && pos < 32; count--) { - if (access_process_vm(target, - (unsigned long) - ®_window[pos], - ®, sizeof(reg), 0) - != sizeof(reg)) - return -EFAULT; - if (access_process_vm(target, - (unsigned long) u, - ®, sizeof(reg), 1) - != sizeof(reg)) - return -EFAULT; - pos++; - u++; - } - } - } - while (count > 0) { - switch (pos) { - case 32: /* PSR */ - reg = tstate_to_psr(regs->tstate); - break; - case 33: /* PC */ - reg = regs->tpc; - break; - case 34: /* NPC */ - reg = regs->tnpc; - break; - case 35: /* Y */ - reg = regs->y; - break; - case 36: /* WIM */ - case 37: /* TBR */ - reg = 0; - break; - default: - goto finish; - } - - if (kbuf) - *k++ = reg; - else if (put_user(reg, u++)) - return -EFAULT; - pos++; - count--; - } -finish: - pos *= sizeof(reg); - count *= sizeof(reg); - - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 38 * sizeof(reg), -1); -} - -static int genregs32_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - struct pt_regs *regs = task_pt_regs(target); - compat_ulong_t __user *reg_window; - const compat_ulong_t *k = kbuf; - const compat_ulong_t __user *u = ubuf; - compat_ulong_t reg; - - if (target == current) - flushw_user(); - - pos /= sizeof(reg); - count /= sizeof(reg); - - if (kbuf) { - for (; count > 0 && pos < 16; count--) - regs->u_regs[pos++] = *k++; - - reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; - if (target == current) { - for (; count > 0 && pos < 32; count--) { - if (put_user(*k++, ®_window[pos++])) - return -EFAULT; - } - } else { - for (; count > 0 && pos < 32; count--) { - if (access_process_vm(target, - (unsigned long) - ®_window[pos], - (void *) k, - sizeof(*k), 1) - != sizeof(*k)) - return -EFAULT; - k++; - pos++; - } - } - } else { - for (; count > 0 && pos < 16; count--) { - if (get_user(reg, u++)) - return -EFAULT; - regs->u_regs[pos++] = reg; - } - - reg_window = (compat_ulong_t __user *) regs->u_regs[UREG_I6]; - if (target == current) { - for (; count > 0 && pos < 32; count--) { - if (get_user(reg, u++) || - put_user(reg, ®_window[pos++])) - return -EFAULT; - } - } else { - for (; count > 0 && pos < 32; count--) { - if (access_process_vm(target, - (unsigned long) - u, - ®, sizeof(reg), 0) - != sizeof(reg)) - return -EFAULT; - if (access_process_vm(target, - (unsigned long) - ®_window[pos], - ®, sizeof(reg), 1) - != sizeof(reg)) - return -EFAULT; - pos++; - u++; - } - } - } - while (count > 0) { - unsigned long tstate; - - if (kbuf) - reg = *k++; - else if (get_user(reg, u++)) - return -EFAULT; - - switch (pos) { - case 32: /* PSR */ - tstate = regs->tstate; - tstate &= ~(TSTATE_ICC | TSTATE_XCC | TSTATE_SYSCALL); - tstate |= psr_to_tstate_icc(reg); - if (reg & PSR_SYSCALL) - tstate |= TSTATE_SYSCALL; - regs->tstate = tstate; - break; - case 33: /* PC */ - regs->tpc = reg; - break; - case 34: /* NPC */ - regs->tnpc = reg; - break; - case 35: /* Y */ - regs->y = reg; - break; - case 36: /* WIM */ - case 37: /* TBR */ - break; - default: - goto finish; - } - - pos++; - count--; - } -finish: - pos *= sizeof(reg); - count *= sizeof(reg); - - return user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 38 * sizeof(reg), -1); -} - -static int fpregs32_get(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - const unsigned long *fpregs = task_thread_info(target)->fpregs; - compat_ulong_t enabled; - unsigned long fprs; - compat_ulong_t fsr; - int ret = 0; - - if (target == current) - save_and_clear_fpu(); - - fprs = task_thread_info(target)->fpsaved[0]; - if (fprs & FPRS_FEF) { - fsr = task_thread_info(target)->xfsr[0]; - enabled = 1; - } else { - fsr = 0; - enabled = 0; - } - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - fpregs, - 0, 32 * sizeof(u32)); - - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 32 * sizeof(u32), - 33 * sizeof(u32)); - if (!ret) - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &fsr, - 33 * sizeof(u32), - 34 * sizeof(u32)); - - if (!ret) { - compat_ulong_t val; - - val = (enabled << 8) | (8 << 16); - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &val, - 34 * sizeof(u32), - 35 * sizeof(u32)); - } - - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - 35 * sizeof(u32), -1); - - return ret; -} - -static int fpregs32_set(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - unsigned long *fpregs = task_thread_info(target)->fpregs; - unsigned long fprs; - int ret; - - if (target == current) - save_and_clear_fpu(); - - fprs = task_thread_info(target)->fpsaved[0]; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - fpregs, - 0, 32 * sizeof(u32)); - if (!ret) - user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 32 * sizeof(u32), - 33 * sizeof(u32)); - if (!ret && count > 0) { - compat_ulong_t fsr; - unsigned long val; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &fsr, - 33 * sizeof(u32), - 34 * sizeof(u32)); - if (!ret) { - val = task_thread_info(target)->xfsr[0]; - val &= 0xffffffff00000000UL; - val |= fsr; - task_thread_info(target)->xfsr[0] = val; - } - } - - fprs |= (FPRS_FEF | FPRS_DL); - task_thread_info(target)->fpsaved[0] = fprs; - - if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 34 * sizeof(u32), -1); - return ret; -} - -static const struct user_regset sparc32_regsets[] = { - /* Format is: - * G0 --> G7 - * O0 --> O7 - * L0 --> L7 - * I0 --> I7 - * PSR, PC, nPC, Y, WIM, TBR - */ - [REGSET_GENERAL] = { - .core_note_type = NT_PRSTATUS, - .n = 38, - .size = sizeof(u32), .align = sizeof(u32), - .get = genregs32_get, .set = genregs32_set - }, - /* Format is: - * F0 --> F31 - * empty 32-bit word - * FSR (32--bit word) - * FPU QUEUE COUNT (8-bit char) - * FPU QUEUE ENTRYSIZE (8-bit char) - * FPU ENABLED (8-bit char) - * empty 8-bit char - * FPU QUEUE (64 32-bit ints) - */ - [REGSET_FP] = { - .core_note_type = NT_PRFPREG, - .n = 99, - .size = sizeof(u32), .align = sizeof(u32), - .get = fpregs32_get, .set = fpregs32_set - }, -}; - -static const struct user_regset_view user_sparc32_view = { - .name = "sparc", .e_machine = EM_SPARC, - .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets) -}; -#endif /* CONFIG_COMPAT */ - -const struct user_regset_view *task_user_regset_view(struct task_struct *task) -{ -#ifdef CONFIG_COMPAT - if (test_tsk_thread_flag(task, TIF_32BIT)) - return &user_sparc32_view; -#endif - return &user_sparc64_view; -} - -#ifdef CONFIG_COMPAT -struct compat_fps { - unsigned int regs[32]; - unsigned int fsr; - unsigned int flags; - unsigned int extra; - unsigned int fpqd; - struct compat_fq { - unsigned int insnaddr; - unsigned int insn; - } fpq[16]; -}; - -long compat_arch_ptrace(struct task_struct *child, compat_long_t request, - compat_ulong_t caddr, compat_ulong_t cdata) -{ - const struct user_regset_view *view = task_user_regset_view(current); - compat_ulong_t caddr2 = task_pt_regs(current)->u_regs[UREG_I4]; - struct pt_regs32 __user *pregs; - struct compat_fps __user *fps; - unsigned long addr2 = caddr2; - unsigned long addr = caddr; - unsigned long data = cdata; - int ret; - - pregs = (struct pt_regs32 __user *) addr; - fps = (struct compat_fps __user *) addr; - - switch (request) { - case PTRACE_PEEKUSR: - ret = (addr != 0) ? -EIO : 0; - break; - - case PTRACE_GETREGS: - ret = copy_regset_to_user(child, view, REGSET_GENERAL, - 32 * sizeof(u32), - 4 * sizeof(u32), - &pregs->psr); - if (!ret) - ret = copy_regset_to_user(child, view, REGSET_GENERAL, - 1 * sizeof(u32), - 15 * sizeof(u32), - &pregs->u_regs[0]); - break; - - case PTRACE_SETREGS: - ret = copy_regset_from_user(child, view, REGSET_GENERAL, - 32 * sizeof(u32), - 4 * sizeof(u32), - &pregs->psr); - if (!ret) - ret = copy_regset_from_user(child, view, REGSET_GENERAL, - 1 * sizeof(u32), - 15 * sizeof(u32), - &pregs->u_regs[0]); - break; - - case PTRACE_GETFPREGS: - ret = copy_regset_to_user(child, view, REGSET_FP, - 0 * sizeof(u32), - 32 * sizeof(u32), - &fps->regs[0]); - if (!ret) - ret = copy_regset_to_user(child, view, REGSET_FP, - 33 * sizeof(u32), - 1 * sizeof(u32), - &fps->fsr); - if (!ret) { - if (__put_user(0, &fps->flags) || - __put_user(0, &fps->extra) || - __put_user(0, &fps->fpqd) || - clear_user(&fps->fpq[0], 32 * sizeof(unsigned int))) - ret = -EFAULT; - } - break; - - case PTRACE_SETFPREGS: - ret = copy_regset_from_user(child, view, REGSET_FP, - 0 * sizeof(u32), - 32 * sizeof(u32), - &fps->regs[0]); - if (!ret) - ret = copy_regset_from_user(child, view, REGSET_FP, - 33 * sizeof(u32), - 1 * sizeof(u32), - &fps->fsr); - break; - - case PTRACE_READTEXT: - case PTRACE_READDATA: - ret = ptrace_readdata(child, addr, - (char __user *)addr2, data); - if (ret == data) - ret = 0; - else if (ret >= 0) - ret = -EIO; - break; - - case PTRACE_WRITETEXT: - case PTRACE_WRITEDATA: - ret = ptrace_writedata(child, (char __user *) addr2, - addr, data); - if (ret == data) - ret = 0; - else if (ret >= 0) - ret = -EIO; - break; - - default: - if (request == PTRACE_SPARC_DETACH) - request = PTRACE_DETACH; - ret = compat_ptrace_request(child, request, addr, data); - break; - } - - return ret; -} -#endif /* CONFIG_COMPAT */ - -struct fps { - unsigned int regs[64]; - unsigned long fsr; -}; - -long arch_ptrace(struct task_struct *child, long request, long addr, long data) -{ - const struct user_regset_view *view = task_user_regset_view(current); - unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4]; - struct pt_regs __user *pregs; - struct fps __user *fps; - int ret; - - pregs = (struct pt_regs __user *) (unsigned long) addr; - fps = (struct fps __user *) (unsigned long) addr; - - switch (request) { - case PTRACE_PEEKUSR: - ret = (addr != 0) ? -EIO : 0; - break; - - case PTRACE_GETREGS64: - ret = copy_regset_to_user(child, view, REGSET_GENERAL, - 1 * sizeof(u64), - 15 * sizeof(u64), - &pregs->u_regs[0]); - if (!ret) { - /* XXX doesn't handle 'y' register correctly XXX */ - ret = copy_regset_to_user(child, view, REGSET_GENERAL, - 32 * sizeof(u64), - 4 * sizeof(u64), - &pregs->tstate); - } - break; - - case PTRACE_SETREGS64: - ret = copy_regset_from_user(child, view, REGSET_GENERAL, - 1 * sizeof(u64), - 15 * sizeof(u64), - &pregs->u_regs[0]); - if (!ret) { - /* XXX doesn't handle 'y' register correctly XXX */ - ret = copy_regset_from_user(child, view, REGSET_GENERAL, - 32 * sizeof(u64), - 4 * sizeof(u64), - &pregs->tstate); - } - break; - - case PTRACE_GETFPREGS64: - ret = copy_regset_to_user(child, view, REGSET_FP, - 0 * sizeof(u64), - 33 * sizeof(u64), - fps); - break; - - case PTRACE_SETFPREGS64: - ret = copy_regset_from_user(child, view, REGSET_FP, - 0 * sizeof(u64), - 33 * sizeof(u64), - fps); - break; - - case PTRACE_READTEXT: - case PTRACE_READDATA: - ret = ptrace_readdata(child, addr, - (char __user *)addr2, data); - if (ret == data) - ret = 0; - else if (ret >= 0) - ret = -EIO; - break; - - case PTRACE_WRITETEXT: - case PTRACE_WRITEDATA: - ret = ptrace_writedata(child, (char __user *) addr2, - addr, data); - if (ret == data) - ret = 0; - else if (ret >= 0) - ret = -EIO; - break; - - default: - if (request == PTRACE_SPARC_DETACH) - request = PTRACE_DETACH; - ret = ptrace_request(child, request, addr, data); - break; - } - - return ret; -} - -asmlinkage int syscall_trace_enter(struct pt_regs *regs) -{ - int ret = 0; - - /* do the secure computing check first */ - secure_computing(regs->u_regs[UREG_G1]); - - if (test_thread_flag(TIF_SYSCALL_TRACE)) - ret = tracehook_report_syscall_entry(regs); - - if (unlikely(current->audit_context) && !ret) - audit_syscall_entry((test_thread_flag(TIF_32BIT) ? - AUDIT_ARCH_SPARC : - AUDIT_ARCH_SPARC64), - regs->u_regs[UREG_G1], - regs->u_regs[UREG_I0], - regs->u_regs[UREG_I1], - regs->u_regs[UREG_I2], - regs->u_regs[UREG_I3]); - - return ret; -} - -asmlinkage void syscall_trace_leave(struct pt_regs *regs) -{ - if (unlikely(current->audit_context)) { - unsigned long tstate = regs->tstate; - int result = AUDITSC_SUCCESS; - - if (unlikely(tstate & (TSTATE_XCARRY | TSTATE_ICARRY))) - result = AUDITSC_FAILURE; - - audit_syscall_exit(result, regs->u_regs[UREG_I0]); - } - - if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall_exit(regs, 0); -} |