X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fptrace.c;h=2441e32ce8200a13b14a851efd68bdab385a90c8;hb=e50c0a8fa60da9ac0e0a70caa8a3a803815c1f2f;hp=92e70ca3bff9d60bb6bf51a660f75b09496d089c;hpb=27b030d58c8e72fc7a95187a791bd9406e350f02;p=linux-2.6-microblaze.git

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 92e70ca3bff9..2441e32ce820 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -28,7 +28,9 @@
 #include <linux/security.h>
 #include <linux/signal.h>
 
+#include <asm/byteorder.h>
 #include <asm/cpu.h>
+#include <asm/dsp.h>
 #include <asm/fpu.h>
 #include <asm/mipsregs.h>
 #include <asm/pgtable.h>
@@ -103,7 +105,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		ret = -EIO;
 		if (copied != sizeof(tmp))
 			break;
-		ret = put_user(tmp,(unsigned long *) data);
+		ret = put_user(tmp,(unsigned long __user *) data);
 		break;
 	}
 
@@ -124,7 +126,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 			if (tsk_used_math(child)) {
 				fpureg_t *fregs = get_fpu_regs(child);
 
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
 				/*
 				 * The odd registers are actually the high
 				 * order bits of the values stored in the even
@@ -135,7 +137,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 				else
 					tmp = (unsigned long) (fregs[(addr - 32)] & 0xffffffff);
 #endif
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
 				tmp = fregs[addr - FPR_BASE];
 #endif
 			} else {
@@ -175,12 +177,33 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 			write_c0_status(flags);
 			break;
 		}
+		case DSP_BASE ... DSP_BASE + 5:
+			if (!cpu_has_dsp) {
+				tmp = 0;
+				ret = -EIO;
+				goto out_tsk;
+			}
+			if (child->thread.dsp.used_dsp) {
+				dspreg_t *dregs = __get_dsp_regs(child);
+				tmp = (unsigned long) (dregs[addr - DSP_BASE]);
+			} else {
+				tmp = -1;	/* DSP registers yet used  */
+			}
+			break;
+		case DSP_CONTROL:
+			if (!cpu_has_dsp) {
+				tmp = 0;
+				ret = -EIO;
+				goto out_tsk;
+			}
+			tmp = child->thread.dsp.dspcontrol;
+			break;
 		default:
 			tmp = 0;
 			ret = -EIO;
 			goto out_tsk;
 		}
-		ret = put_user(tmp, (unsigned long *) data);
+		ret = put_user(tmp, (unsigned long __user *) data);
 		break;
 	}
 
@@ -213,7 +236,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 				       sizeof(child->thread.fpu.hard));
 				child->thread.fpu.hard.fcr31 = 0;
 			}
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
 			/*
 			 * The odd registers are actually the high order bits
 			 * of the values stored in the even registers - unless
@@ -227,7 +250,7 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 				fregs[addr - FPR_BASE] |= data;
 			}
 #endif
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
 			fregs[addr - FPR_BASE] = data;
 #endif
 			break;
@@ -247,6 +270,22 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 			else
 				child->thread.fpu.soft.fcr31 = data;
 			break;
+		case DSP_BASE ... DSP_BASE + 5:
+			if (!cpu_has_dsp) {
+				ret = -EIO;
+				break;
+			}
+
+			dspreg_t *dregs = __get_dsp_regs(child);
+			dregs[addr - DSP_BASE] = data;
+			break;
+		case DSP_CONTROL:
+			if (!cpu_has_dsp) {
+				ret = -EIO;
+				break;
+			}
+			child->thread.dsp.dspcontrol = data;
+			break;
 		default:
 			/* The rest are not allowed. */
 			ret = -EIO;
@@ -289,6 +328,11 @@ asmlinkage int sys_ptrace(long request, long pid, long addr, long data)
 		ret = ptrace_detach(child, data);
 		break;
 
+	case PTRACE_GET_THREAD_AREA:
+		ret = put_user(child->thread_info->tp_value,
+				(unsigned long __user *) data);
+		break;
+
 	default:
 		ret = ptrace_request(child, request, addr, data);
 		break;
@@ -303,21 +347,14 @@ out:
 
 static inline int audit_arch(void)
 {
-#ifdef CONFIG_CPU_LITTLE_ENDIAN
-#ifdef CONFIG_MIPS64
-	if (!(current->thread.mflags & MF_32BIT_REGS))
-		return AUDIT_ARCH_MIPSEL64;
-#endif /* MIPS64 */
-	return AUDIT_ARCH_MIPSEL;
-
-#else /* big endian... */
-#ifdef CONFIG_MIPS64
-	if (!(current->thread.mflags & MF_32BIT_REGS))
-		return AUDIT_ARCH_MIPS64;
-#endif /* MIPS64 */
-	return AUDIT_ARCH_MIPS;
-
-#endif /* endian */
+	int arch = EM_MIPS;
+#ifdef CONFIG_64BIT
+	arch |=  __AUDIT_ARCH_64BIT;
+#endif
+#if defined(__LITTLE_ENDIAN)
+	arch |=  __AUDIT_ARCH_LE;
+#endif
+	return arch;
 }
 
 /*
@@ -327,12 +364,13 @@ static inline int audit_arch(void)
 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]), regs->regs[2]);
+		audit_syscall_exit(current, AUDITSC_RESULT(regs->regs[2]),
+		                   regs->regs[2]);
 
-	if (!test_thread_flag(TIF_SYSCALL_TRACE))
-		goto out;
 	if (!(current->ptrace & PT_PTRACED))
 		goto out;
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		goto out;
 
 	/* The 0x80 provides a way for the tracing parent to distinguish
 	   between a syscall stop and SIGTRAP delivery */