diff options
Diffstat (limited to 'arch/mips/kernel/ptrace.c')
| -rw-r--r-- | arch/mips/kernel/ptrace.c | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index 1395654cfc8d..efbd8df8b665 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -144,6 +144,9 @@ int ptrace_setregs(struct task_struct *child, struct user_pt_regs __user *data) /* badvaddr, status, and cause may not be written. */ + /* System call number may have been changed */ + mips_syscall_update_nr(child, regs); + return 0; } @@ -345,6 +348,9 @@ static int gpr32_set(struct task_struct *target, } } + /* System call number may have been changed */ + mips_syscall_update_nr(target, regs); + return 0; } @@ -405,6 +411,9 @@ static int gpr64_set(struct task_struct *target, } } + /* System call number may have been changed */ + mips_syscall_update_nr(target, regs); + return 0; } @@ -618,6 +627,19 @@ static const struct user_regset_view user_mips64_view = { .n = ARRAY_SIZE(mips64_regsets), }; +#ifdef CONFIG_MIPS32_N32 + +static const struct user_regset_view user_mipsn32_view = { + .name = "mipsn32", + .e_flags = EF_MIPS_ABI2, + .e_machine = ELF_ARCH, + .ei_osabi = ELF_OSABI, + .regsets = mips64_regsets, + .n = ARRAY_SIZE(mips64_regsets), +}; + +#endif /* CONFIG_MIPS32_N32 */ + #endif /* CONFIG_64BIT */ const struct user_regset_view *task_user_regset_view(struct task_struct *task) @@ -629,6 +651,10 @@ const struct user_regset_view *task_user_regset_view(struct task_struct *task) if (test_tsk_thread_flag(task, TIF_32BIT_REGS)) return &user_mips_view; #endif +#ifdef CONFIG_MIPS32_N32 + if (test_tsk_thread_flag(task, TIF_32BIT_ADDR)) + return &user_mipsn32_view; +#endif return &user_mips64_view; #endif } @@ -753,6 +779,12 @@ long arch_ptrace(struct task_struct *child, long request, switch (addr) { case 0 ... 31: regs->regs[addr] = data; + /* System call number may have been changed */ + if (addr == 2) + mips_syscall_update_nr(child, regs); + else if (addr == 4 && + mips_syscall_is_indirect(child, regs)) + mips_syscall_update_nr(child, regs); break; case FPR_BASE ... FPR_BASE + 31: { union fpureg *fregs = get_fpu_regs(child); @@ -864,9 +896,11 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall) current_thread_info()->syscall = syscall; - if (test_thread_flag(TIF_SYSCALL_TRACE) && - tracehook_report_syscall_entry(regs)) - return -1; + if (test_thread_flag(TIF_SYSCALL_TRACE)) { + if (tracehook_report_syscall_entry(regs)) + return -1; + syscall = current_thread_info()->syscall; + } #ifdef CONFIG_SECCOMP if (unlikely(test_thread_flag(TIF_SECCOMP))) { @@ -884,6 +918,7 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall) ret = __secure_computing(&sd); if (ret == -1) return ret; + syscall = current_thread_info()->syscall; } #endif |