* Patch by Yasushi Shoji, 07 Apr 2004:

  - add support for microblaze processors
  - add support for AtmarkTechno "suzaku" board

1 files changed, 116 insertions, 0 deletions

diff --git a/include/asm-microblaze/ptrace.h b/include/asm-microblaze/ptrace.h
new file mode 100644
index 0000000..b796d4f
--- /dev/null
+++ b/include/asm-microblaze/ptrace.h
@@ -0,0 +1,116 @@
+/*
+ * include/asm-microblaze/ptrace.h -- Access to CPU registers
+ *
+ *  Copyright (C) 2003       John Williams <jwilliams@itee.uq.edu.au>
+ *  Copyright (C) 2001,2002  NEC Corporation
+ *  Copyright (C) 2001,2002  Miles Bader <miles@gnu.org>
+ *
+ * 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.
+ *
+ * Written by Miles Bader <miles@gnu.org>
+ * Microblaze port by John Williams
+ */
+
+#ifndef __MICROBLAZE_PTRACE_H__
+#define __MICROBLAZE_PTRACE_H__
+
+
+/* Microblaze general purpose registers with special meanings.  */
+#define GPR_ZERO	0	/* constant zero */
+#define GPR_ASM		18	/* reserved for assembler */
+#define GPR_SP		1	/* stack pointer */
+#define GPR_GP		2	/* global data pointer */
+#define GPR_EP		30	/* `element pointer' */
+#define GPR_LP		15	/* link pointer (current return address) */
+
+/* These aren't official names, but they make some code more descriptive.  */
+#define GPR_ARG0	5
+#define GPR_ARG1	6
+#define GPR_ARG2	7
+#define GPR_ARG3	8
+#define GPR_ARG4	9
+#define GPR_ARG5	10
+#define GPR_RVAL0	3
+#define GPR_RVAL1	4
+#define GPR_RVAL	GPR_RVAL0
+
+#define NUM_GPRS	32
+
+/* `system' registers.  */
+/* Note these are old v850 values, microblaze has many fewer */
+#define SR_EIPC		0
+#define SR_EIPSW	1
+#define SR_FEPC		2
+#define SR_FEPSW	3
+#define SR_ECR		4
+#define SR_PSW		5
+#define SR_CTPC		16
+#define SR_CTPSW	17
+#define SR_DBPC		18
+#define SR_DBPSW	19
+#define SR_CTBP		20
+#define SR_DIR		21
+#define SR_ASID		23
+
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned long microblaze_reg_t;
+
+/* How processor state is stored on the stack during a syscall/signal.
+   If you change this structure, change the associated assembly-language
+   macros below too (PT_*)!  */
+struct pt_regs
+{
+	/* General purpose registers.  */
+	microblaze_reg_t gpr[NUM_GPRS];
+
+	microblaze_reg_t pc;		/* program counter */
+	microblaze_reg_t psw;		/* program status word */
+
+	microblaze_reg_t kernel_mode;	/* 1 if in `kernel mode', 0 if user mode */
+	microblaze_reg_t single_step;	/* 1 if in single step mode */
+};
+
+
+#define instruction_pointer(regs)	((regs)->pc)
+#define user_mode(regs)			(!(regs)->kernel_mode)
+
+/* When a struct pt_regs is used to save user state for a system call in
+   the kernel, the system call is stored in the space for R0 (since it's
+   never used otherwise, R0 being a constant 0).  Non-system-calls
+   simply store 0 there.  */
+#define PT_REGS_SYSCALL(regs)		(regs)->gpr[0]
+#define PT_REGS_SET_SYSCALL(regs, val)	((regs)->gpr[0] = (val))
+
+#endif /* !__ASSEMBLY__ */
+
+
+/* The number of bytes used to store each register.  */
+#define _PT_REG_SIZE	4
+
+/* Offset of a general purpose register in a stuct pt_regs.  */
+#define PT_GPR(num)	((num) * _PT_REG_SIZE)
+
+/* Offsets of various special registers & fields in a struct pt_regs.  */
+#define NUM_SPECIAL	4
+#define PT_PC		((NUM_GPRS + 0) * _PT_REG_SIZE)
+#define PT_PSW		((NUM_GPRS + 1) * _PT_REG_SIZE)
+#define PT_KERNEL_MODE	((NUM_GPRS + 2) * _PT_REG_SIZE)
+#define PT_SINGLESTEP	((NUM_GPRS + 3) * _PT_REG_SIZE)
+
+#define PT_SYSCALL	PT_GPR(0)
+
+/* Size of struct pt_regs, including alignment.  */
+#define PT_SIZE		((NUM_GPRS + NUM_SPECIAL) * _PT_REG_SIZE)
+
+/* These are `magic' values for PTRACE_PEEKUSR that return info about where
+   a process is located in memory.  */
+#define PT_TEXT_ADDR    (PT_SIZE + 1)
+#define PT_TEXT_LEN     (PT_SIZE + 2)
+#define PT_DATA_ADDR    (PT_SIZE + 3)
+#define PT_DATA_LEN     (PT_SIZE + 4)
+
+#endif /* __MICROBLAZE_PTRACE_H__ */