diff options
Diffstat (limited to 'arch/hexagon')
| -rw-r--r-- | arch/hexagon/kernel/ptrace.c | 62 |
1 files changed, 21 insertions, 41 deletions
diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c index dcbf7ea960cc..a5a89e944257 100644 --- a/arch/hexagon/kernel/ptrace.c +++ b/arch/hexagon/kernel/ptrace.c @@ -35,58 +35,38 @@ void user_disable_single_step(struct task_struct *child) static int genregs_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + srtuct membuf to) { - 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)); - + membuf_write(&to, ®s->r00, 32*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); + membuf_store(&to, regs->sa0); + membuf_store(&to, regs->lc0); + membuf_store(&to, regs->sa1); + membuf_store(&to, regs->lc1); + membuf_store(&to, regs->m0); + membuf_store(&to, regs->m1); + membuf_store(&to, regs->usr); + membuf_store(&to, regs->p3_0); + membuf_store(&to, regs->gp); + membuf_store(&to, regs->ugp); + membuf_store(&to, pt_elr(regs)); // pc + membuf_store(&to, (unsigned long)pt_cause(regs)); // cause + membuf_store(&to, pt_badva(regs)); // badva #if CONFIG_HEXAGON_ARCH_VERSION >=4 - ONEXT(®s->cs0, cs0); - ONEXT(®s->cs1, cs1); + membuf_store(&to, regs->cs0); + membuf_store(&to, regs->cs1); + return membuf_zero(&to, sizeof(unsigned long)); +#else + return membuf_zero(&to, 3 * sizeof(unsigned long)); #endif - - /* 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, @@ -159,7 +139,7 @@ static const struct user_regset hexagon_regsets[] = { .n = ELF_NGREG, .size = sizeof(unsigned long), .align = sizeof(unsigned long), - .get = genregs_get, + .regset_get = genregs_get, .set = genregs_set, }, }; |