diff options
Diffstat (limited to 'arch/nios2/kernel/ptrace.c')
| -rw-r--r-- | arch/nios2/kernel/ptrace.c | 62 |
1 files changed, 20 insertions, 42 deletions
diff --git a/arch/nios2/kernel/ptrace.c b/arch/nios2/kernel/ptrace.c index de97bcb7dd44..9221c15972e6 100644 --- a/arch/nios2/kernel/ptrace.c +++ b/arch/nios2/kernel/ptrace.c @@ -15,51 +15,29 @@ #include <linux/regset.h> #include <linux/sched.h> #include <linux/sched/task_stack.h> -#include <linux/tracehook.h> #include <linux/uaccess.h> #include <linux/user.h> static int genregs_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) + struct membuf to) { const struct pt_regs *regs = task_pt_regs(target); const struct switch_stack *sw = (struct switch_stack *)regs - 1; - int ret = 0; - -#define REG_O_ZERO_RANGE(START, END) \ - if (!ret) \ - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, \ - START * 4, (END * 4) + 4); - -#define REG_O_ONE(PTR, LOC) \ - if (!ret) \ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, PTR, \ - LOC * 4, (LOC * 4) + 4); -#define REG_O_RANGE(PTR, START, END) \ - if (!ret) \ - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, PTR, \ - START * 4, (END * 4) + 4); - - REG_O_ZERO_RANGE(PTR_R0, PTR_R0); - REG_O_RANGE(®s->r1, PTR_R1, PTR_R7); - REG_O_RANGE(®s->r8, PTR_R8, PTR_R15); - REG_O_RANGE(sw, PTR_R16, PTR_R23); - REG_O_ZERO_RANGE(PTR_R24, PTR_R25); /* et and bt */ - REG_O_ONE(®s->gp, PTR_GP); - REG_O_ONE(®s->sp, PTR_SP); - REG_O_ONE(®s->fp, PTR_FP); - REG_O_ONE(®s->ea, PTR_EA); - REG_O_ZERO_RANGE(PTR_BA, PTR_BA); - REG_O_ONE(®s->ra, PTR_RA); - REG_O_ONE(®s->ea, PTR_PC); /* use ea for PC */ - if (!ret) - ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf, - PTR_STATUS * 4, -1); - - return ret; + membuf_zero(&to, 4); // R0 + membuf_write(&to, ®s->r1, 7 * 4); // R1..R7 + membuf_write(&to, ®s->r8, 8 * 4); // R8..R15 + membuf_write(&to, sw, 8 * 4); // R16..R23 + membuf_zero(&to, 2 * 4); /* et and bt */ + membuf_store(&to, regs->gp); + membuf_store(&to, regs->sp); + membuf_store(&to, regs->fp); + membuf_store(&to, regs->ea); + membuf_zero(&to, 4); // PTR_BA + membuf_store(&to, regs->ra); + membuf_store(&to, regs->ea); /* use ea for PC */ + return membuf_zero(&to, (NUM_PTRACE_REG - PTR_PC) * 4); } /* @@ -76,7 +54,7 @@ static int genregs_set(struct task_struct *target, #define REG_IGNORE_RANGE(START, END) \ if (!ret) \ - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \ + user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \ START * 4, (END * 4) + 4); #define REG_IN_ONE(PTR, LOC) \ @@ -102,8 +80,8 @@ static int genregs_set(struct task_struct *target, REG_IN_ONE(®s->ra, PTR_RA); REG_IN_ONE(®s->ea, PTR_PC); /* use ea for PC */ if (!ret) - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - PTR_STATUS * 4, -1); + user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, + PTR_STATUS * 4, -1); return ret; } @@ -121,7 +99,7 @@ static const struct user_regset nios2_regsets[] = { .n = NUM_PTRACE_REG, .size = sizeof(unsigned long), .align = sizeof(unsigned long), - .get = genregs_get, + .regset_get = genregs_get, .set = genregs_set, } }; @@ -155,7 +133,7 @@ asmlinkage int do_syscall_trace_enter(void) int ret = 0; if (test_thread_flag(TIF_SYSCALL_TRACE)) - ret = tracehook_report_syscall_entry(task_pt_regs(current)); + ret = ptrace_report_syscall_entry(task_pt_regs(current)); return ret; } @@ -163,5 +141,5 @@ asmlinkage int do_syscall_trace_enter(void) asmlinkage void do_syscall_trace_exit(void) { if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall_exit(task_pt_regs(current), 0); + ptrace_report_syscall_exit(task_pt_regs(current), 0); } |