Import of Linux/MIPS 1.3.0

1 files changed, 80 insertions, 58 deletions

diff --git a/include/asm-mips/ptrace.h b/include/asm-mips/ptrace.h
index 97b08ce74..18cdb8387 100644
--- a/include/asm-mips/ptrace.h
+++ b/include/asm-mips/ptrace.h
@@ -1,110 +1,132 @@
 /*
  * linux/include/asm-mips/ptrace.h
  *
- * machine dependend structs and defines to help the user use
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994, 1995 by Waldorf GMBH
+ * written by Ralf Baechle
+ *
+ * Machine dependent structs and defines to help the user use
  * the ptrace system call.
  */
-#ifndef _ASM_MIPS_PTRACE_H
-#define _ASM_MIPS_PTRACE_H
+#ifndef __ASM_MIPS_PTRACE_H
+#define __ASM_MIPS_PTRACE_H
 
 /*
- * use ptrace (3 or 6, pid, PT_EXCL, data); to read or write
- * the processes registers.
- *
- * This defines/structures corrospond to the register layout on stack -
+ * This defines/structures correspond to the register layout on stack -
  * if the order here is changed, it needs to be updated in
- * arch/mips/fork.c:copy_process, asm/mips/signal.c:do_signal,
- * asm-mips/ptrace.c, include/asm-mips/ptrace.h.
+ * include/asm-mips/stackframe.h
  */
-
-#define IN_REG1             0
-#define IN_REG2             1
-#define IN_REG3             2
-#define IN_REG4             3
-#define IN_REG5             4
-#define IN_REG6             5
-#define IN_REG7             6
-#define IN_REG8             7
-#define IN_REG9             8
-#define IN_REG10            9
-#define IN_REG11            10
-#define IN_REG12            11
-#define IN_REG13            12
-#define IN_REG14            13
-#define IN_REG15            14
-#define IN_REG16            15
-#define IN_REG17            16
-#define IN_REG18            17
-#define IN_REG19            18
-#define IN_REG20            19
-#define IN_REG21            20
-#define IN_REG22            21
-#define IN_REG23            22
-#define IN_REG24            23
-#define IN_REG25            24
-
+#define IN_REG1       5
+#define IN_REG2       6
+#define IN_REG3       7
+#define IN_REG4       8
+#define IN_REG5       9
+#define IN_REG6       10
+#define IN_REG7       11
+#define IN_REG8       12
+#define IN_REG9       13
+#define IN_REG10      14
+#define IN_REG11      15
+#define IN_REG12      16
+#define IN_REG13      17
+#define IN_REG14      18
+#define IN_REG15      19
+#define IN_REG16      20
+#define IN_REG17      21
+#define IN_REG18      22
+#define IN_REG19      23
+#define IN_REG20      24
+#define IN_REG21      25
+#define IN_REG22      26
+#define IN_REG23      27
+#define IN_REG24      28
+#define IN_REG25      29
 /*
- * k0 and k1 not saved
+ * k0/k1 unsaved
  */
-#define IN_REG28            25
-#define IN_REG29            26
-#define IN_REG30            27
-#define IN_REG31            28
+#define IN_REG28      30
+#define IN_REG29      31
+#define IN_REG30      32
+#define IN_REG31      33
 
 /*
  * Saved special registers
  */
-#define FR_LO			((IN_REG31) + 1)
-#define FR_HI			((IN_LO) + 1)
+#define IN_LO         34
+#define IN_HI         35
 
 /*
- * Saved cp0 registers
+ * saved cp0 registers
  */
-#define IN_CP0_STATUS		((IN_LO) + 1)
-#define IN_CP0_EPC		((IN_CP0_STATUS) + 1)
-#define IN_CP0_ERROREPC		((IN_CP0_EPC) + 1)
+#define IN_CP0_STATUS 36
+#define IN_CP0_EPC    37
+#define IN_CP0_CAUSE  38
 
 /*
- * Some goodies...
+ * Some goodies
  */
-#define IN_INTERRUPT		((IN_CP0_ERROREPC) + 1)
-#define IN_ORIG_REG2		((IN_INTERRUPT) + 1)
+#define IN_INTERRUPT  39
+#define IN_ORIG_REG2  40
 
 /*
- * this struct defines the way the registers are stored on the 
- * stack during a system call/exception. As usual the registers
- * k0/k1 aren't being saved.
+ * This struct defines the way the registers are stored on the stack during a
+ * system call/exception. As usual the registers k0/k1 aren't being saved.
  */
-
 struct pt_regs {
 	/*
+	 * Pad bytes for argument save space on the stack
+	 * 20/40 Bytes for 32/64 bit code
+	 */
+	unsigned long pad0[5];
+
+	/*
 	 * saved main processor registers
 	 */
 	long	        reg1,  reg2,  reg3,  reg4,  reg5,  reg6,  reg7;
 	long	 reg8,  reg9, reg10, reg11, reg12, reg13, reg14, reg15;
 	long	reg16, reg17, reg18, reg19, reg20, reg21, reg22, reg23;
 	long	reg24, reg25,               reg28, reg29, reg30, reg31;
+
 	/*
 	 * Saved special registers
 	 */
 	long	lo;
 	long	hi;
+
 	/*
 	 * saved cp0 registers
 	 */
 	unsigned long cp0_status;
 	unsigned long cp0_epc;
-	unsigned long cp0_errorepc;
+	unsigned long cp0_cause;
+
 	/*
 	 * Some goodies...
 	 */
 	unsigned long interrupt;
 	long orig_reg2;
+	long pad1;
 };
 
+#ifdef __KERNEL__
+
 /*
- * This function computes the interrupt number from the stack frame
+ * Does the process account for user or for system time?
  */
-#define pt_regs2irq(p) ((int) ((struct pt_regs *)p)->interrupt)        
+#if defined (__R4000__)
+
+#define user_mode(regs) ((regs)->cp0_status & 0x10)
+
+#else /* !defined (__R4000__) */
+
+#define user_mode(regs) (!((regs)->cp0_status & 0x8))
+
+#endif /* !defined (__R4000__) */
+
+extern void show_regs(struct pt_regs *);
+#endif
 
-#endif /* _ASM_MIPS_PTRACE_H */
+#endif /* __ASM_MIPS_PTRACE_H */