/*
- * arch/ppc/kernel/ptrace.c
- *
* PowerPC version
* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
*
* this archive for more details.
*/
+#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/signal.h>
#include <linux/seccomp.h>
#include <linux/audit.h>
+#ifdef CONFIG_PPC32
#include <linux/module.h>
+#endif
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/system.h>
+#ifdef CONFIG_PPC64
+#include <asm/ptrace-common.h>
+#endif
+#ifdef CONFIG_PPC32
/*
* Set of msr bits that gdb can change on behalf of a process.
*/
#else
#define MSR_DEBUGCHANGE (MSR_SE | MSR_BE)
#endif
+#endif /* CONFIG_PPC32 */
/*
* does not yet catch signals sent when the child dies.
* in exit.c or in signal.c.
*/
+#ifdef CONFIG_PPC32
/*
* Get contents of register REGNO in task TASK.
*/
#endif
}
}
+#endif /* CONFIG_PPC32 */
/*
* Called by kernel/ptrace.c when detaching..
}
/* read the word at location addr in the USER area. */
- /* XXX this will need fixing for 64-bit */
case PTRACE_PEEKUSR: {
unsigned long index, tmp;
ret = -EIO;
/* convert to index and check */
+#ifdef CONFIG_PPC32
index = (unsigned long) addr >> 2;
- if ((addr & 3) || index > PT_FPSCR
- || child->thread.regs == NULL)
+ if ((addr & 3) || (index > PT_FPSCR)
+ || (child->thread.regs == NULL))
+#else
+ index = (unsigned long) addr >> 3;
+ if ((addr & 7) || (index > PT_FPSCR))
+#endif
break;
+#ifdef CONFIG_PPC32
CHECK_FULL_REGS(child->thread.regs);
+#endif
if (index < PT_FPR0) {
tmp = get_reg(child, (int) index);
} else {
- preempt_disable();
- if (child->thread.regs->msr & MSR_FP)
- giveup_fpu(child);
- preempt_enable();
+ flush_fp_to_thread(child);
tmp = ((unsigned long *)child->thread.fpr)[index - PT_FPR0];
}
ret = put_user(tmp,(unsigned long __user *) data);
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
ret = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
+ if (access_process_vm(child, addr, &data, sizeof(data), 1)
+ == sizeof(data))
break;
ret = -EIO;
break;
ret = -EIO;
/* convert to index and check */
+#ifdef CONFIG_PPC32
index = (unsigned long) addr >> 2;
- if ((addr & 3) || index > PT_FPSCR
- || child->thread.regs == NULL)
+ if ((addr & 3) || (index > PT_FPSCR)
+ || (child->thread.regs == NULL))
+#else
+ index = (unsigned long) addr >> 3;
+ if ((addr & 7) || (index > PT_FPSCR))
+#endif
break;
+#ifdef CONFIG_PPC32
CHECK_FULL_REGS(child->thread.regs);
+#endif
if (index == PT_ORIG_R3)
break;
if (index < PT_FPR0) {
ret = put_reg(child, index, data);
} else {
- preempt_disable();
- if (child->thread.regs->msr & MSR_FP)
- giveup_fpu(child);
- preempt_enable();
+ flush_fp_to_thread(child);
((unsigned long *)child->thread.fpr)[index - PT_FPR0] = data;
ret = 0;
}
ret = -EIO;
if (!valid_signal(data))
break;
- if (request == PTRACE_SYSCALL) {
+ if (request == PTRACE_SYSCALL)
set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- } else {
+ else
clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
- }
child->exit_code = data;
/* make sure the single step bit is not set. */
clear_single_step(child);
break;
}
+#ifdef CONFIG_PPC64
+ case PTRACE_GET_DEBUGREG: {
+ ret = -EINVAL;
+ /* We only support one DABR and no IABRS at the moment */
+ if (addr > 0)
+ break;
+ ret = put_user(child->thread.dabr,
+ (unsigned long __user *)data);
+ break;
+ }
+
+ case PTRACE_SET_DEBUGREG:
+ ret = ptrace_set_debugreg(child, addr, data);
+ break;
+#endif
+
case PTRACE_DETACH:
ret = ptrace_detach(child, data);
break;
+#ifdef CONFIG_PPC64
+ case PPC_PTRACE_GETREGS: { /* Get GPRs 0 - 31. */
+ int i;
+ unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
+ unsigned long __user *tmp = (unsigned long __user *)addr;
+
+ for (i = 0; i < 32; i++) {
+ ret = put_user(*reg, tmp);
+ if (ret)
+ break;
+ reg++;
+ tmp++;
+ }
+ break;
+ }
+
+ case PPC_PTRACE_SETREGS: { /* Set GPRs 0 - 31. */
+ int i;
+ unsigned long *reg = &((unsigned long *)child->thread.regs)[0];
+ unsigned long __user *tmp = (unsigned long __user *)addr;
+
+ for (i = 0; i < 32; i++) {
+ ret = get_user(*reg, tmp);
+ if (ret)
+ break;
+ reg++;
+ tmp++;
+ }
+ break;
+ }
+
+ case PPC_PTRACE_GETFPREGS: { /* Get FPRs 0 - 31. */
+ int i;
+ unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
+ unsigned long __user *tmp = (unsigned long __user *)addr;
+
+ flush_fp_to_thread(child);
+
+ for (i = 0; i < 32; i++) {
+ ret = put_user(*reg, tmp);
+ if (ret)
+ break;
+ reg++;
+ tmp++;
+ }
+ break;
+ }
+
+ case PPC_PTRACE_SETFPREGS: { /* Get FPRs 0 - 31. */
+ int i;
+ unsigned long *reg = &((unsigned long *)child->thread.fpr)[0];
+ unsigned long __user *tmp = (unsigned long __user *)addr;
+
+ flush_fp_to_thread(child);
+
+ for (i = 0; i < 32; i++) {
+ ret = get_user(*reg, tmp);
+ if (ret)
+ break;
+ reg++;
+ tmp++;
+ }
+ break;
+ }
+#endif /* CONFIG_PPC64 */
+
#ifdef CONFIG_ALTIVEC
case PTRACE_GETVRREGS:
/* Get the child altivec register state. */
- preempt_disable();
- if (child->thread.regs->msr & MSR_VEC)
- giveup_altivec(child);
- preempt_enable();
+ flush_altivec_to_thread(child);
ret = get_vrregs((unsigned long __user *)data, child);
break;
case PTRACE_SETVRREGS:
/* Set the child altivec register state. */
- /* this is to clear the MSR_VEC bit to force a reload
- * of register state from memory */
- preempt_disable();
- if (child->thread.regs->msr & MSR_VEC)
- giveup_altivec(child);
- preempt_enable();
+ flush_altivec_to_thread(child);
ret = set_vrregs(child, (unsigned long __user *)data);
break;
#endif
void do_syscall_trace_enter(struct pt_regs *regs)
{
+#ifdef CONFIG_PPC64
+ secure_computing(regs->gpr[0]);
+#endif
+
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
do_syscall_trace();
if (unlikely(current->audit_context))
- audit_syscall_entry(current, AUDIT_ARCH_PPC,
+ audit_syscall_entry(current,
+#ifdef CONFIG_PPC32
+ AUDIT_ARCH_PPC,
+#else
+ test_thread_flag(TIF_32BIT)?AUDIT_ARCH_PPC:AUDIT_ARCH_PPC64,
+#endif
regs->gpr[0],
regs->gpr[3], regs->gpr[4],
regs->gpr[5], regs->gpr[6]);
void do_syscall_trace_leave(struct pt_regs *regs)
{
+#ifdef CONFIG_PPC32
secure_computing(regs->gpr[0]);
+#endif
if (unlikely(current->audit_context))
audit_syscall_exit(current,
(regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
regs->result);
- if ((test_thread_flag(TIF_SYSCALL_TRACE))
+ if ((test_thread_flag(TIF_SYSCALL_TRACE)
+#ifdef CONFIG_PPC64
+ || test_thread_flag(TIF_SINGLESTEP)
+#endif
+ )
&& (current->ptrace & PT_PTRACED))
do_syscall_trace();
}
+#ifdef CONFIG_PPC32
EXPORT_SYMBOL(do_syscall_trace_enter);
EXPORT_SYMBOL(do_syscall_trace_leave);
+#endif
projects / linux-2.6 / blobdiff