From bd0409a856bf62d7eeb3807dba534abde067143d Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 16 Jun 2020 14:40:05 -0400 Subject: parisc: switch to ->regset_get() Signed-off-by: Al Viro --- arch/parisc/kernel/ptrace.c | 84 +++++++++------------------------------------ 1 file changed, 16 insertions(+), 68 deletions(-) diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index b51418ad8655..2127974982df 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -391,31 +391,11 @@ void do_syscall_trace_exit(struct pt_regs *regs) static int fpr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + struct membuf to) { struct pt_regs *regs = task_regs(target); - __u64 *k = kbuf; - __u64 __user *u = ubuf; - __u64 reg; - - pos /= sizeof(reg); - count /= sizeof(reg); - - if (kbuf) - for (; count > 0 && pos < ELF_NFPREG; --count) - *k++ = regs->fr[pos++]; - else - for (; count > 0 && pos < ELF_NFPREG; --count) - if (__put_user(regs->fr[pos++], u++)) - return -EFAULT; - kbuf = k; - ubuf = u; - pos *= sizeof(reg); - count *= sizeof(reg); - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - ELF_NFPREG * sizeof(reg), -1); + return membuf_write(&to, regs->fr, ELF_NFPREG * sizeof(__u64)); } static int fpr_set(struct task_struct *target, @@ -527,30 +507,14 @@ static void set_reg(struct pt_regs *regs, int num, unsigned long val) static int gpr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + struct membuf to) { struct pt_regs *regs = task_regs(target); - unsigned long *k = kbuf; - unsigned long __user *u = ubuf; - unsigned long reg; + unsigned int pos; - pos /= sizeof(reg); - count /= sizeof(reg); - - if (kbuf) - for (; count > 0 && pos < ELF_NGREG; --count) - *k++ = get_reg(regs, pos++); - else - for (; count > 0 && pos < ELF_NGREG; --count) - if (__put_user(get_reg(regs, pos++), u++)) - return -EFAULT; - kbuf = k; - ubuf = u; - pos *= sizeof(reg); - count *= sizeof(reg); - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - ELF_NGREG * sizeof(reg), -1); + for (pos = 0; pos < ELF_NGREG; pos++) + membuf_store(&to, get_reg(regs, pos)); + return 0; } static int gpr_set(struct task_struct *target, @@ -588,12 +552,12 @@ static const struct user_regset native_regsets[] = { [REGSET_GENERAL] = { .core_note_type = NT_PRSTATUS, .n = ELF_NGREG, .size = sizeof(long), .align = sizeof(long), - .get = gpr_get, .set = gpr_set + .regset_get = gpr_get, .set = gpr_set }, [REGSET_FP] = { .core_note_type = NT_PRFPREG, .n = ELF_NFPREG, .size = sizeof(__u64), .align = sizeof(__u64), - .get = fpr_get, .set = fpr_set + .regset_get = fpr_get, .set = fpr_set } }; @@ -607,31 +571,15 @@ static const struct user_regset_view user_parisc_native_view = { static int gpr32_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + struct membuf to) { struct pt_regs *regs = task_regs(target); - compat_ulong_t *k = kbuf; - compat_ulong_t __user *u = ubuf; - compat_ulong_t reg; + unsigned int pos; - pos /= sizeof(reg); - count /= sizeof(reg); + for (pos = 0; pos < ELF_NGREG; pos++) + membuf_store(&to, (compat_ulong_t)get_reg(regs, pos)); - if (kbuf) - for (; count > 0 && pos < ELF_NGREG; --count) - *k++ = get_reg(regs, pos++); - else - for (; count > 0 && pos < ELF_NGREG; --count) - if (__put_user((compat_ulong_t) get_reg(regs, pos++), u++)) - return -EFAULT; - - kbuf = k; - ubuf = u; - pos *= sizeof(reg); - count *= sizeof(reg); - return user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - ELF_NGREG * sizeof(reg), -1); + return 0; } static int gpr32_set(struct task_struct *target, @@ -672,12 +620,12 @@ static const struct user_regset compat_regsets[] = { [REGSET_GENERAL] = { .core_note_type = NT_PRSTATUS, .n = ELF_NGREG, .size = sizeof(compat_long_t), .align = sizeof(compat_long_t), - .get = gpr32_get, .set = gpr32_set + .regset_get = gpr32_get, .set = gpr32_set }, [REGSET_FP] = { .core_note_type = NT_PRFPREG, .n = ELF_NFPREG, .size = sizeof(__u64), .align = sizeof(__u64), - .get = fpr_get, .set = fpr_set + .regset_get = fpr_get, .set = fpr_set } }; -- cgit