Loading arch/sparc64/kernel/ptrace.c +581 −1 Original line number Diff line number Diff line /* ptrace.c: Sparc process tracing support. * * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) * 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, Loading @@ -22,6 +22,9 @@ #include <linux/seccomp.h> #include <linux/audit.h> #include <linux/signal.h> #include <linux/regset.h> #include <linux/compat.h> #include <linux/elf.h> #include <asm/asi.h> #include <asm/pgtable.h> Loading Loading @@ -167,6 +170,583 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, } } 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) { unsigned long __user *reg_window = (unsigned long __user *) (regs->u_regs[UREG_I6] + STACK_BIAS); unsigned long window[16]; if (copy_from_user(window, reg_window, sizeof(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 > 0) { unsigned long __user *reg_window = (unsigned long __user *) (regs->u_regs[UREG_I6] + STACK_BIAS); unsigned long window[16]; if (copy_from_user(window, reg_window, sizeof(window))) return -EFAULT; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, window, 16 * sizeof(u64), 32 * sizeof(u64)); if (!ret && copy_to_user(reg_window, window, sizeof(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 can be modified * in the %tstate register. */ tstate &= (TSTATE_ICC | TSTATE_XCC); regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC); 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 * sizeof(u64), .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 * sizeof(u64), .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) }; 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]; for (; count > 0 && pos < 32; count--) { if (get_user(*k++, ®_window[pos++])) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (get_user(reg, ®_window[pos++]) || put_user(reg, u++)) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (put_user(*k++, ®_window[pos++])) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (get_user(reg, u++) || put_user(reg, ®_window[pos++])) return -EFAULT; } } 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 |= psr_to_tstate_icc(reg); 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 * sizeof(u32), .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 * sizeof(u32), .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) }; const struct user_regset_view *task_user_regset_view(struct task_struct *task) { if (test_tsk_thread_flag(task, TIF_32BIT)) return &user_sparc32_view; return &user_sparc64_view; } asmlinkage void do_ptrace(struct pt_regs *regs) { int request = regs->u_regs[UREG_I0]; Loading Loading
arch/sparc64/kernel/ptrace.c +581 −1 Original line number Diff line number Diff line /* ptrace.c: Sparc process tracing support. * * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) * 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, Loading @@ -22,6 +22,9 @@ #include <linux/seccomp.h> #include <linux/audit.h> #include <linux/signal.h> #include <linux/regset.h> #include <linux/compat.h> #include <linux/elf.h> #include <asm/asi.h> #include <asm/pgtable.h> Loading Loading @@ -167,6 +170,583 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page, } } 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) { unsigned long __user *reg_window = (unsigned long __user *) (regs->u_regs[UREG_I6] + STACK_BIAS); unsigned long window[16]; if (copy_from_user(window, reg_window, sizeof(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 > 0) { unsigned long __user *reg_window = (unsigned long __user *) (regs->u_regs[UREG_I6] + STACK_BIAS); unsigned long window[16]; if (copy_from_user(window, reg_window, sizeof(window))) return -EFAULT; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, window, 16 * sizeof(u64), 32 * sizeof(u64)); if (!ret && copy_to_user(reg_window, window, sizeof(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 can be modified * in the %tstate register. */ tstate &= (TSTATE_ICC | TSTATE_XCC); regs->tstate &= ~(TSTATE_ICC | TSTATE_XCC); 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 * sizeof(u64), .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 * sizeof(u64), .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) }; 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]; for (; count > 0 && pos < 32; count--) { if (get_user(*k++, ®_window[pos++])) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (get_user(reg, ®_window[pos++]) || put_user(reg, u++)) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (put_user(*k++, ®_window[pos++])) return -EFAULT; } } 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]; for (; count > 0 && pos < 32; count--) { if (get_user(reg, u++) || put_user(reg, ®_window[pos++])) return -EFAULT; } } 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 |= psr_to_tstate_icc(reg); 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 * sizeof(u32), .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 * sizeof(u32), .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) }; const struct user_regset_view *task_user_regset_view(struct task_struct *task) { if (test_tsk_thread_flag(task, TIF_32BIT)) return &user_sparc32_view; return &user_sparc64_view; } asmlinkage void do_ptrace(struct pt_regs *regs) { int request = regs->u_regs[UREG_I0]; Loading
David S. Miller <davem@davemloft.net>David S. Miller <davem@davemloft.net>