Initial import

1 files changed, 167 insertions, 0 deletions

diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
new file mode 100644
index 000000000..e69221d58
--- /dev/null
+++ b/arch/m32r/kernel/process.c
@@ -0,0 +1,167 @@
+/*
+ *  linux/arch/m32r/kernel/process.c
+ *
+ *  Copyright (c) 2001, 2002  Hiroyuki Kondo, Hirokazu Takata,
+ *                            Hitoshi Yamamoto
+ *  Taken from sh version.
+ *    Copyright (C) 1995  Linus Torvalds
+ *    SuperH version:  Copyright (C) 1999, 2000  Niibe Yutaka & Kaz Kojima
+ */
+
+#undef DEBUG_PROCESS
+#ifdef DEBUG_PROCESS
+#define DPRINTK(fmt, args...)  printk("%s:%d:%s: " fmt, __FILE__, __LINE__, \
+  __func__, ##args)
+#else
+#define DPRINTK(fmt, args...)
+#endif
+
+/*
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/hardirq.h>
+#include <linux/rcupdate.h>
+
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/mmu_context.h>
+#include <asm/elf.h>
+#include <asm/m32r.h>
+
+#include <linux/err.h>
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+unsigned long thread_saved_pc(struct task_struct *tsk)
+{
+	return tsk->thread.lr;
+}
+
+void (*pm_power_off)(void) = NULL;
+EXPORT_SYMBOL(pm_power_off);
+
+void machine_restart(char *__unused)
+{
+#if defined(CONFIG_PLAT_MAPPI3)
+	outw(1, (unsigned long)PLD_REBOOT);
+#endif
+
+	printk("Please push reset button!\n");
+	while (1)
+		cpu_relax();
+}
+
+void machine_halt(void)
+{
+	printk("Please push reset button!\n");
+	while (1)
+		cpu_relax();
+}
+
+void machine_power_off(void)
+{
+	/* M32R_FIXME */
+}
+
+void show_regs(struct pt_regs * regs)
+{
+	printk("\n");
+	show_regs_print_info(KERN_DEFAULT);
+
+	printk("BPC[%08lx]:PSW[%08lx]:LR [%08lx]:FP [%08lx]\n", \
+	  regs->bpc, regs->psw, regs->lr, regs->fp);
+	printk("BBPC[%08lx]:BBPSW[%08lx]:SPU[%08lx]:SPI[%08lx]\n", \
+	  regs->bbpc, regs->bbpsw, regs->spu, regs->spi);
+	printk("R0 [%08lx]:R1 [%08lx]:R2 [%08lx]:R3 [%08lx]\n", \
+	  regs->r0, regs->r1, regs->r2, regs->r3);
+	printk("R4 [%08lx]:R5 [%08lx]:R6 [%08lx]:R7 [%08lx]\n", \
+	  regs->r4, regs->r5, regs->r6, regs->r7);
+	printk("R8 [%08lx]:R9 [%08lx]:R10[%08lx]:R11[%08lx]\n", \
+	  regs->r8, regs->r9, regs->r10, regs->r11);
+	printk("R12[%08lx]\n", \
+	  regs->r12);
+
+#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
+	printk("ACC0H[%08lx]:ACC0L[%08lx]\n", \
+	  regs->acc0h, regs->acc0l);
+	printk("ACC1H[%08lx]:ACC1L[%08lx]\n", \
+	  regs->acc1h, regs->acc1l);
+#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
+	printk("ACCH[%08lx]:ACCL[%08lx]\n", \
+	  regs->acc0h, regs->acc0l);
+#else
+#error unknown isa configuration
+#endif
+}
+
+/*
+ * Free current thread data structures etc..
+ */
+void exit_thread(void)
+{
+	/* Nothing to do. */
+	DPRINTK("pid = %d\n", current->pid);
+}
+
+void flush_thread(void)
+{
+	DPRINTK("pid = %d\n", current->pid);
+	memset(&current->thread.debug_trap, 0, sizeof(struct debug_trap));
+}
+
+void release_thread(struct task_struct *dead_task)
+{
+	/* do nothing */
+	DPRINTK("pid = %d\n", dead_task->pid);
+}
+
+/* Fill in the fpu structure for a core dump.. */
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
+{
+	return 0; /* Task didn't use the fpu at all. */
+}
+
+int copy_thread(unsigned long clone_flags, unsigned long spu,
+	unsigned long arg, struct task_struct *tsk)
+{
+	struct pt_regs *childregs = task_pt_regs(tsk);
+	extern void ret_from_fork(void);
+	extern void ret_from_kernel_thread(void);
+
+	if (unlikely(tsk->flags & PF_KTHREAD)) {
+		memset(childregs, 0, sizeof(struct pt_regs));
+		childregs->psw = M32R_PSW_BIE;
+		childregs->r1 = spu;	/* fn */
+		childregs->r0 = arg;
+		tsk->thread.lr = (unsigned long)ret_from_kernel_thread;
+	} else {
+		/* Copy registers */
+		*childregs = *current_pt_regs();
+		if (spu)
+			childregs->spu = spu;
+		childregs->r0 = 0;	/* Child gets zero as return value */
+		tsk->thread.lr = (unsigned long)ret_from_fork;
+	}
+	tsk->thread.sp = (unsigned long)childregs;
+
+	return 0;
+}
+
+/*
+ * These bracket the sleeping functions..
+ */
+#define first_sched	((unsigned long) scheduling_functions_start_here)
+#define last_sched	((unsigned long) scheduling_functions_end_here)
+
+unsigned long get_wchan(struct task_struct *p)
+{
+	/* M32R_FIXME */
+	return (0);
+}