diff options
Diffstat (limited to 'arch/openrisc/kernel/ptrace.c')
| -rw-r--r-- | arch/openrisc/kernel/ptrace.c | 49 |
1 files changed, 44 insertions, 5 deletions
diff --git a/arch/openrisc/kernel/ptrace.c b/arch/openrisc/kernel/ptrace.c index b971740fc2aa..1eeac3b62e9d 100644 --- a/arch/openrisc/kernel/ptrace.c +++ b/arch/openrisc/kernel/ptrace.c @@ -27,6 +27,10 @@ #include <asm/thread_info.h> #include <asm/page.h> +asmlinkage long do_syscall_trace_enter(struct pt_regs *regs); + +asmlinkage void do_syscall_trace_leave(struct pt_regs *regs); + /* * Copy the thread state to a regset that can be interpreted by userspace. * @@ -66,10 +70,9 @@ static int genregs_set(struct task_struct *target, int ret; /* ignore r0 */ - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 0, 4); + user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 0, 4); /* r1 - r31 */ - if (!ret) - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, regs->gpr+1, 4, 4*32); /* PC */ if (!ret) @@ -80,17 +83,45 @@ static int genregs_set(struct task_struct *target, * the Supervision register */ if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - 4*33, -1); + user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 4*33, -1); return ret; } /* + * As OpenRISC shares GPRs and floating point registers we don't need to export + * the floating point registers again. So here we only export the fpcsr special + * purpose register. + */ +static int fpregs_get(struct task_struct *target, + const struct user_regset *regset, + struct membuf to) +{ + const struct pt_regs *regs = task_pt_regs(target); + + return membuf_store(&to, regs->fpcsr); +} + +static int fpregs_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; + + /* FPCSR */ + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + ®s->fpcsr, 0, 4); + return ret; +} + +/* * Define the register sets available on OpenRISC under Linux */ enum or1k_regset { REGSET_GENERAL, + REGSET_FPU, }; static const struct user_regset or1k_regsets[] = { @@ -102,6 +133,14 @@ static const struct user_regset or1k_regsets[] = { .regset_get = genregs_get, .set = genregs_set, }, + [REGSET_FPU] = { + .core_note_type = NT_PRFPREG, + .n = sizeof(struct __or1k_fpu_state) / sizeof(long), + .size = sizeof(long), + .align = sizeof(long), + .regset_get = fpregs_get, + .set = fpregs_set, + }, }; static const struct user_regset_view user_or1k_native_view = { |