diff options
Diffstat (limited to 'arch/m68k/kernel/ptrace.c')
| -rw-r--r-- | arch/m68k/kernel/ptrace.c | 81 |
1 files changed, 57 insertions, 24 deletions
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c index 1fc217e5f06..1bc10e62b9a 100644 --- a/arch/m68k/kernel/ptrace.c +++ b/arch/m68k/kernel/ptrace.c @@ -18,11 +18,11 @@ #include <linux/ptrace.h> #include <linux/user.h> #include <linux/signal.h> +#include <linux/tracehook.h> #include <asm/uaccess.h> #include <asm/page.h> #include <asm/pgtable.h> -#include <asm/system.h> #include <asm/processor.h> /* @@ -145,66 +145,78 @@ void user_enable_single_step(struct task_struct *child) set_tsk_thread_flag(child, TIF_DELAYED_TRACE); } +#ifdef CONFIG_MMU void user_enable_block_step(struct task_struct *child) { unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; put_reg(child, PT_SR, tmp | T0_BIT); } +#endif void user_disable_single_step(struct task_struct *child) { singlestep_disable(child); } -long arch_ptrace(struct task_struct *child, long request, long addr, long data) +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) { unsigned long tmp; int i, ret = 0; + int regno = addr >> 2; /* temporary hack. */ + unsigned long __user *datap = (unsigned long __user *) data; switch (request) { /* read the word at location addr in the USER area. */ case PTRACE_PEEKUSR: if (addr & 3) goto out_eio; - addr >>= 2; /* temporary hack. */ - if (addr >= 0 && addr < 19) { - tmp = get_reg(child, addr); - } else if (addr >= 21 && addr < 49) { - tmp = child->thread.fp[addr - 21]; + if (regno >= 0 && regno < 19) { + tmp = get_reg(child, regno); + } else if (regno >= 21 && regno < 49) { + tmp = child->thread.fp[regno - 21]; /* Convert internal fpu reg representation * into long double format */ - if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) tmp = ((tmp & 0xffff0000) << 15) | ((tmp & 0x0000ffff) << 16); +#ifndef CONFIG_MMU + } else if (regno == 49) { + tmp = child->mm->start_code; + } else if (regno == 50) { + tmp = child->mm->start_data; + } else if (regno == 51) { + tmp = child->mm->end_code; +#endif } else goto out_eio; - ret = put_user(tmp, (unsigned long *)data); + ret = put_user(tmp, datap); break; - case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ + case PTRACE_POKEUSR: + /* write the word at location addr in the USER area */ if (addr & 3) goto out_eio; - addr >>= 2; /* temporary hack. */ - if (addr == PT_SR) { + if (regno == PT_SR) { data &= SR_MASK; data |= get_reg(child, PT_SR) & ~SR_MASK; } - if (addr >= 0 && addr < 19) { - if (put_reg(child, addr, data)) + if (regno >= 0 && regno < 19) { + if (put_reg(child, regno, data)) goto out_eio; - } else if (addr >= 21 && addr < 48) { + } else if (regno >= 21 && regno < 48) { /* Convert long double format * into internal fpu reg representation */ - if (FPU_IS_EMU && (addr < 45) && !(addr % 3)) { - data = (unsigned long)data << 15; + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) { + data <<= 15; data = (data & 0xffff0000) | ((data & 0x0000ffff) >> 1); } - child->thread.fp[addr - 21] = data; + child->thread.fp[regno - 21] = data; } else goto out_eio; break; @@ -212,16 +224,16 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) case PTRACE_GETREGS: /* Get all gp regs from the child. */ for (i = 0; i < 19; i++) { tmp = get_reg(child, i); - ret = put_user(tmp, (unsigned long *)data); + ret = put_user(tmp, datap); if (ret) break; - data += sizeof(long); + datap++; } break; case PTRACE_SETREGS: /* Set all gp regs in the child. */ for (i = 0; i < 19; i++) { - ret = get_user(tmp, (unsigned long *)data); + ret = get_user(tmp, datap); if (ret) break; if (i == PT_SR) { @@ -229,22 +241,26 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) tmp |= get_reg(child, PT_SR) & ~SR_MASK; } put_reg(child, i, tmp); - data += sizeof(long); + datap++; } break; case PTRACE_GETFPREGS: /* Get the child FPU state. */ - if (copy_to_user((void *)data, &child->thread.fp, + if (copy_to_user(datap, &child->thread.fp, sizeof(struct user_m68kfp_struct))) ret = -EFAULT; break; case PTRACE_SETFPREGS: /* Set the child FPU state. */ - if (copy_from_user(&child->thread.fp, (void *)data, + if (copy_from_user(&child->thread.fp, datap, sizeof(struct user_m68kfp_struct))) ret = -EFAULT; break; + case PTRACE_GET_THREAD_AREA: + ret = put_user(task_thread_info(child)->tp_value, datap); + break; + default: ret = ptrace_request(child, request, addr, data); break; @@ -269,3 +285,20 @@ asmlinkage void syscall_trace(void) current->exit_code = 0; } } + +#if defined(CONFIG_COLDFIRE) || !defined(CONFIG_MMU) +asmlinkage int syscall_trace_enter(void) +{ + int ret = 0; + + if (test_thread_flag(TIF_SYSCALL_TRACE)) + ret = tracehook_report_syscall_entry(task_pt_regs(current)); + return ret; +} + +asmlinkage void syscall_trace_leave(void) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(task_pt_regs(current), 0); +} +#endif /* CONFIG_COLDFIRE */ |