diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 45 |
1 files changed, 39 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index dd4837c4a68a..75bc744a6217 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -35,16 +35,28 @@ #include <asm/pgtable.h> #include <asm/system.h> -#ifdef CONFIG_PPC64 -#include "ptrace-ppc64.h" +/* + * does not yet catch signals sent when the child dies. + * in exit.c or in signal.c. + */ + +/* + * Set of msr bits that gdb can change on behalf of a process. + */ +#if defined(CONFIG_40x) || defined(CONFIG_BOOKE) +#define MSR_DEBUGCHANGE 0 #else -#include "ptrace-ppc32.h" +#define MSR_DEBUGCHANGE (MSR_SE | MSR_BE) #endif /* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. + * Max register writeable via put_reg */ +#ifdef CONFIG_PPC32 +#define PT_MAX_PUT_REG PT_MQ +#else +#define PT_MAX_PUT_REG PT_CCR +#endif /* * Get contents of register REGNO in task TASK. @@ -58,7 +70,7 @@ unsigned long ptrace_get_reg(struct task_struct *task, int regno) if (regno == PT_MSR) { tmp = ((unsigned long *)task->thread.regs)[PT_MSR]; - return PT_MUNGE_MSR(tmp, task); + return tmp | task->thread.fpexc_mode; } if (regno < (sizeof(struct pt_regs) / sizeof(unsigned long))) @@ -274,6 +286,27 @@ static void clear_single_step(struct task_struct *task) clear_tsk_thread_flag(task, TIF_SINGLESTEP); } +#ifdef CONFIG_PPC64 +static int ptrace_set_debugreg(struct task_struct *task, unsigned long addr, + unsigned long data) +{ + /* We only support one DABR and no IABRS at the moment */ + if (addr > 0) + return -EINVAL; + + /* The bottom 3 bits are flags */ + if ((data & ~0x7UL) >= TASK_SIZE) + return -EIO; + + /* Ensure translation is on */ + if (data && !(data & DABR_TRANSLATION)) + return -EIO; + + task->thread.dabr = data; + return 0; +} +#endif + /* * Called by kernel/ptrace.c when detaching.. * |