1 files changed, 119 insertions, 0 deletions
diff --git a/arch/m68k/mach-mcfv4e/include/proc/ptrace.h b/arch/m68k/mach-mcfv4e/include/proc/ptrace.h
new file mode 100644
index 0000000000..dd124291d6
--- /dev/null
+++ b/arch/m68k/mach-mcfv4e/include/proc/ptrace.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2008 Carsten Schlote <c.schlote@konzeptpark.de>
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * This file is part of U-Boot V2.
+ *
+ * U-Boot V2 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * U-Boot V2 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with U-Boot V2.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file
+ *  Declaration and defines for M68k register frames
+ */
+#ifndef __ASM_PROC_PTRACE_H
+#define __ASM_PROC_PTRACE_H
+
+#define TRACE_FLAG      0x8000
+#define SVR_MODE        0x2000
+#define MODE_MASK	0x2000
+#define MASTER_FLAG     0x1000
+#define IRQ_MASK        0x0700
+#define CC_MASK         0x00FF
+
+#define CC_X_BIT        0x0010
+#define CC_N_BIT        0x0008
+#define CC_Z_BIT        0x0004
+#define CC_V_BIT        0x0002
+#define CC_C_BIT        0x0001
+
+#define PCMASK          0x0
+
+#ifndef __ASSEMBLY__
+
+/* this struct defines the way the registers are stored on the
+   stack during a system call. */
+
+struct pt_regs {
+	long uregs[37];
+};
+#define M68K_sp    uregs[37]
+#define M68K_sr    uregs[36]
+#define M68K_pc    uregs[35]
+#define M68K_fpiar uregs[34]
+#define M68K_fpsr  uregs[33]
+#define M68K_fpcr  uregs[32]
+
+#define M68K_fp7   uregs[30]
+#define M68K_fp6   uregs[28]
+#define M68K_fp5   uregs[26]
+#define M68K_fp4   uregs[24]
+#define M68K_fp3   uregs[22]
+#define M68K_fp2   uregs[20]
+#define M68K_fp1   uregs[18]
+#define M68K_fp0   uregs[16]
+
+#define M68K_a7    uregs[15]
+#define M68K_a6    uregs[14]
+#define M68K_a5    uregs[13]
+#define M68K_a4    uregs[12]
+#define M68K_a3    uregs[11]
+#define M68K_a2    uregs[10]
+#define M68K_a1    uregs[ 9]
+#define M68K_a0    uregs[ 8]
+#define M68K_d7    uregs[ 7]
+#define M68K_d6    uregs[ 6]
+#define M68K_d5    uregs[ 5]
+#define M68K_d4    uregs[ 4]
+#define M68K_d3    uregs[ 3]
+#define M68K_d2    uregs[ 2]
+#define M68K_d1    uregs[ 1]
+#define M68K_d0    uregs[ 0]
+
+
+#ifdef __KERNEL__
+
+#define user_mode(regs)	\
+	(((regs)->M68K_sr & SVR_MODE) == 0)
+
+#define processor_mode(regs) \
+	((regs)->M68K_sr & SVR_MODE)
+
+#define interrupts_enabled(regs) \
+	(!((regs)->M68K_sr & IRQ_MASK))
+
+#define condition_codes(regs) \
+	((regs)->M68K_sr & CC_MASK)
+
+/* Are the current registers suitable for user mode?
+ * (used to maintain security in signal handlers)
+ */
+static inline int valid_user_regs(struct pt_regs *regs)
+{
+	if ((regs->M68K_sr & SVR_MODE) == 0 &&
+	    (regs->M68K_sr & IRQ_MASK) == 7)
+		return 1;
+
+	/*
+	 * Force SR to something logical...
+	 */
+	regs->M68K_sr &= ~(CC_MASK);
+
+	return 0;
+}
+
+#endif	/* __KERNEL__ */
+
+#endif	/* __ASSEMBLY__ */
+
+#endif