* At this time Linux/MIPS64 only supports syscall tracing, even for 32-bit
* binaries.
*/
-#include <linux/config.h>
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/signal.h>
+#include <linux/vs_base.h>
#include <asm/byteorder.h>
#include <asm/cpu.h>
int ptrace_getfpregs (struct task_struct *child, __u32 __user *data)
{
int i;
+ unsigned int tmp;
if (!access_ok(VERIFY_WRITE, data, 33 * 8))
return -EIO;
__put_user ((__u64) -1, i + (__u64 __user *) data);
}
- if (cpu_has_fpu) {
- unsigned int flags, tmp;
+ __put_user (child->thread.fpu.fcr31, data + 64);
- __put_user (child->thread.fpu.hard.fcr31, data + 64);
+ preempt_disable();
+ if (cpu_has_fpu) {
+ unsigned int flags;
- preempt_disable();
if (cpu_has_mipsmt) {
unsigned int vpflags = dvpe();
flags = read_c0_status();
__asm__ __volatile__("cfc1\t%0,$0" : "=r" (tmp));
write_c0_status(flags);
}
- preempt_enable();
- __put_user (tmp, data + 65);
} else {
- __put_user (child->thread.fpu.soft.fcr31, data + 64);
- __put_user ((__u32) 0, data + 65);
+ tmp = 0;
}
+ preempt_enable();
+ __put_user (tmp, data + 65);
return 0;
}
for (i = 0; i < 32; i++)
__get_user (fregs[i], i + (__u64 __user *) data);
- if (cpu_has_fpu)
- __get_user (child->thread.fpu.hard.fcr31, data + 64);
- else
- __get_user (child->thread.fpu.soft.fcr31, data + 64);
+ __get_user (child->thread.fpu.fcr31, data + 64);
/* FIR may not be written. */
{
int ret;
+ if (!vx_check(vx_task_xid(child), VS_WATCH_P|VS_IDENT))
+ goto out;
+
switch (request) {
/* when I and D space are separate, these will need to be fixed. */
case PTRACE_PEEKTEXT: /* read word at location addr. */
tmp = regs->lo;
break;
case FPC_CSR:
- if (cpu_has_fpu)
- tmp = child->thread.fpu.hard.fcr31;
- else
- tmp = child->thread.fpu.soft.fcr31;
+ tmp = child->thread.fpu.fcr31;
break;
case FPC_EIR: { /* implementation / version register */
unsigned int flags;
+#ifdef CONFIG_MIPS_MT_SMTC
+ unsigned int irqflags;
+ unsigned int mtflags;
+#endif /* CONFIG_MIPS_MT_SMTC */
- if (!cpu_has_fpu)
+ preempt_disable();
+ if (!cpu_has_fpu) {
+ preempt_enable();
break;
+ }
- preempt_disable();
+#ifdef CONFIG_MIPS_MT_SMTC
+ /* Read-modify-write of Status must be atomic */
+ local_irq_save(irqflags);
+ mtflags = dmt();
+#endif /* CONFIG_MIPS_MT_SMTC */
if (cpu_has_mipsmt) {
unsigned int vpflags = dvpe();
flags = read_c0_status();
__asm__ __volatile__("cfc1\t%0,$0": "=r" (tmp));
write_c0_status(flags);
}
+#ifdef CONFIG_MIPS_MT_SMTC
+ emt(mtflags);
+ local_irq_restore(irqflags);
+#endif /* CONFIG_MIPS_MT_SMTC */
preempt_enable();
break;
}
if (!tsk_used_math(child)) {
/* FP not yet used */
- memset(&child->thread.fpu.hard, ~0,
- sizeof(child->thread.fpu.hard));
- child->thread.fpu.hard.fcr31 = 0;
+ memset(&child->thread.fpu, ~0,
+ sizeof(child->thread.fpu));
+ child->thread.fpu.fcr31 = 0;
}
#ifdef CONFIG_32BIT
/*
regs->lo = data;
break;
case FPC_CSR:
- if (cpu_has_fpu)
- child->thread.fpu.hard.fcr31 = data;
- else
- child->thread.fpu.soft.fcr31 = data;
+ child->thread.fpu.fcr31 = data;
break;
case DSP_BASE ... DSP_BASE + 5: {
dspreg_t *dregs;
asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
{
if (unlikely(current->audit_context) && entryexit)
- audit_syscall_exit(current, AUDITSC_RESULT(regs->regs[2]),
+ audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]),
regs->regs[2]);
- if (!(current->ptrace & PT_PTRACED))
- goto out;
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- goto out;
- if (!vx_check(vx_task_xid(child), VX_WATCH|VX_IDENT))
- goto out_tsk;
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall(regs, entryexit);
- /* The 0x80 provides a way for the tracing parent to distinguish
- between a syscall stop and SIGTRAP delivery */
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
- 0x80 : 0));
-
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
- out:
if (unlikely(current->audit_context) && !entryexit)
- audit_syscall_entry(current, audit_arch(), regs->regs[2],
+ audit_syscall_entry(audit_arch(), regs->regs[2],
regs->regs[4], regs->regs[5],
regs->regs[6], regs->regs[7]);
}