diff options
Diffstat (limited to 'arch/arm/kernel/ptrace.c')
| -rw-r--r-- | arch/arm/kernel/ptrace.c | 79 |
1 files changed, 20 insertions, 59 deletions
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 2771e682220b..7951b2c06fec 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -22,9 +22,9 @@ #include <linux/hw_breakpoint.h> #include <linux/regset.h> #include <linux/audit.h> -#include <linux/tracehook.h> #include <linux/unistd.h> +#include <asm/syscall.h> #include <asm/traps.h> #define CREATE_TRACE_POINTS @@ -318,32 +318,6 @@ static int ptrace_setwmmxregs(struct task_struct *tsk, void __user *ufp) #endif -#ifdef CONFIG_CRUNCH -/* - * Get the child Crunch state. - */ -static int ptrace_getcrunchregs(struct task_struct *tsk, void __user *ufp) -{ - struct thread_info *thread = task_thread_info(tsk); - - crunch_task_disable(thread); /* force it to ram */ - return copy_to_user(ufp, &thread->crunchstate, CRUNCH_SIZE) - ? -EFAULT : 0; -} - -/* - * Set the child Crunch state. - */ -static int ptrace_setcrunchregs(struct task_struct *tsk, void __user *ufp) -{ - struct thread_info *thread = task_thread_info(tsk); - - crunch_task_release(thread); /* force a reload */ - return copy_from_user(&thread->crunchstate, ufp, CRUNCH_SIZE) - ? -EFAULT : 0; -} -#endif - #ifdef CONFIG_HAVE_HW_BREAKPOINT /* * Convert a virtual register number into an index for a thread_info @@ -610,8 +584,6 @@ static int fpa_set(struct task_struct *target, { struct thread_info *thread = task_thread_info(target); - thread->used_cp[1] = thread->used_cp[2] = 1; - return user_regset_copyin(&pos, &count, &kbuf, &ubuf, &thread->fpstate, 0, sizeof(struct user_fp)); @@ -677,11 +649,9 @@ static int vfp_set(struct task_struct *target, if (ret) return ret; - ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, - user_fpregs_offset + sizeof(new_vfp.fpregs), - user_fpscr_offset); - if (ret) - return ret; + user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, + user_fpregs_offset + sizeof(new_vfp.fpregs), + user_fpscr_offset); ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &new_vfp.fpscr, @@ -707,7 +677,7 @@ enum arm_regset { static const struct user_regset arm_regsets[] = { [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, + USER_REGSET_NOTE_TYPE(PRSTATUS), .n = ELF_NGREG, .size = sizeof(u32), .align = sizeof(u32), @@ -719,7 +689,7 @@ static const struct user_regset arm_regsets[] = { * For the FPA regs in fpstate, the real fields are a mixture * of sizes, so pretend that the registers are word-sized: */ - .core_note_type = NT_PRFPREG, + USER_REGSET_NOTE_TYPE(PRFPREG), .n = sizeof(struct user_fp) / sizeof(u32), .size = sizeof(u32), .align = sizeof(u32), @@ -732,7 +702,7 @@ static const struct user_regset arm_regsets[] = { * Pretend that the VFP regs are word-sized, since the FPSCR is * a single word dangling at the end of struct user_vfp: */ - .core_note_type = NT_ARM_VFP, + USER_REGSET_NOTE_TYPE(ARM_VFP), .n = ARM_VFPREGS_SIZE / sizeof(u32), .size = sizeof(u32), .align = sizeof(u32), @@ -811,20 +781,12 @@ long arch_ptrace(struct task_struct *child, long request, break; case PTRACE_SET_SYSCALL: - task_thread_info(child)->syscall = data; + if (data != -1) + data &= __NR_SYSCALL_MASK; + task_thread_info(child)->abi_syscall = data; ret = 0; break; -#ifdef CONFIG_CRUNCH - case PTRACE_GETCRUNCHREGS: - ret = ptrace_getcrunchregs(child, datap); - break; - - case PTRACE_SETCRUNCHREGS: - ret = ptrace_setcrunchregs(child, datap); - break; -#endif - #ifdef CONFIG_VFP case PTRACE_GETVFPREGS: ret = copy_regset_to_user(child, @@ -865,8 +827,7 @@ enum ptrace_syscall_dir { PTRACE_SYSCALL_EXIT, }; -static void tracehook_report_syscall(struct pt_regs *regs, - enum ptrace_syscall_dir dir) +static void report_syscall(struct pt_regs *regs, enum ptrace_syscall_dir dir) { unsigned long ip; @@ -878,19 +839,19 @@ static void tracehook_report_syscall(struct pt_regs *regs, regs->ARM_ip = dir; if (dir == PTRACE_SYSCALL_EXIT) - tracehook_report_syscall_exit(regs, 0); - else if (tracehook_report_syscall_entry(regs)) - current_thread_info()->syscall = -1; + ptrace_report_syscall_exit(regs, 0); + else if (ptrace_report_syscall_entry(regs)) + current_thread_info()->abi_syscall = -1; regs->ARM_ip = ip; } -asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) +asmlinkage int syscall_trace_enter(struct pt_regs *regs) { - current_thread_info()->syscall = scno; + int scno; if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER); + report_syscall(regs, PTRACE_SYSCALL_ENTER); /* Do seccomp after ptrace; syscall may have changed. */ #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER @@ -898,11 +859,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno) return -1; #else /* XXX: remove this once OABI gets fixed */ - secure_computing_strict(current_thread_info()->syscall); + secure_computing_strict(syscall_get_nr(current, regs)); #endif /* Tracer or seccomp may have changed syscall. */ - scno = current_thread_info()->syscall; + scno = syscall_get_nr(current, regs); if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, scno); @@ -931,5 +892,5 @@ asmlinkage void syscall_trace_exit(struct pt_regs *regs) trace_sys_exit(regs, regs_return_value(regs)); if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall(regs, PTRACE_SYSCALL_EXIT); + report_syscall(regs, PTRACE_SYSCALL_EXIT); } |