#ifndef _ASM_PROCESSOR_H
#define _ASM_PROCESSOR_H
+#include <linux/atomic.h>
#include <linux/cpumask.h>
#include <linux/threads.h>
#include <asm/cachectl.h>
#include <asm/cpu.h>
#include <asm/cpu-info.h>
+#include <asm/dsemul.h>
#include <asm/mipsregs.h>
#include <asm/prefetch.h>
* 8192EB ...
*/
#define TASK_SIZE32 0x7fff8000UL
-#define TASK_SIZE64 0x10000000000UL
+#ifdef CONFIG_MIPS_VA_BITS_48
+#define TASK_SIZE64 (0x1UL << ((cpu_data[0].vmbits>48)?48:cpu_data[0].vmbits))
+#else
+#define TASK_SIZE64 0x10000000000UL
+#endif
#define TASK_SIZE (test_thread_flag(TIF_32BIT_ADDR) ? TASK_SIZE32 : TASK_SIZE64)
#define STACK_TOP_MAX TASK_SIZE64
#endif
-#define STACK_TOP (TASK_SIZE & PAGE_MASK)
+/*
+ * One page above the stack is used for branch delay slot "emulation".
+ * See dsemul.c for details.
+ */
+#define STACK_TOP ((TASK_SIZE & PAGE_MASK) - PAGE_SIZE)
/*
* This decides where the kernel will search for a free chunk of vm
/* Saved fpu/fpu emulator stuff. */
struct mips_fpu_struct fpu FPU_ALIGN;
+ /* Assigned branch delay slot 'emulation' frame */
+ atomic_t bd_emu_frame;
+ /* PC of the branch from a branch delay slot 'emulation' */
+ unsigned long bd_emu_branch_pc;
+ /* PC to continue from following a branch delay slot 'emulation' */
+ unsigned long bd_emu_cont_pc;
#ifdef CONFIG_MIPS_MT_FPAFF
/* Emulated instruction count */
unsigned long emulated_fp;
* FPU affinity state (null if not FPAFF) \
*/ \
FPAFF_INIT \
+ /* Delay slot emulation */ \
+ .bd_emu_frame = ATOMIC_INIT(BD_EMUFRAME_NONE), \
+ .bd_emu_branch_pc = 0, \
+ .bd_emu_cont_pc = 0, \
/* \
* Saved DSP stuff \
*/ \
*/
extern void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long sp);
+static inline void flush_thread(void)
+{
+}
+
unsigned long get_wchan(struct task_struct *p);
#define __KSTK_TOS(tsk) ((unsigned long)task_stack_page(tsk) + \