Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / score / include / asm / processor.h

diff --git a/kernel/arch/score/include/asm/processor.h b/kernel/arch/score/include/asm/processor.h
new file mode 100644 (file)
index 0000000..851f441
--- /dev/null
+++ b/kernel/arch/score/include/asm/processor.h
@@ -0,0 +1,105 @@
+#ifndef _ASM_SCORE_PROCESSOR_H
+#define _ASM_SCORE_PROCESSOR_H
+
+#include <linux/cpumask.h>
+#include <linux/threads.h>
+
+#include <asm/segment.h>
+
+struct task_struct;
+
+/*
+ * System setup and hardware flags..
+ */
+extern void (*cpu_wait)(void);
+
+extern unsigned long thread_saved_pc(struct task_struct *tsk);
+extern void start_thread(struct pt_regs *regs,
+                       unsigned long pc, unsigned long sp);
+extern unsigned long get_wchan(struct task_struct *p);
+
+/*
+ * Return current * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l; })
+
+#define cpu_relax()            barrier()
+#define cpu_relax_lowlatency()        cpu_relax()
+#define release_thread(thread) do {} while (0)
+
+/*
+ * User space process size: 2GB. This is hardcoded into a few places,
+ * so don't change it unless you know what you are doing.
+ */
+#define TASK_SIZE      0x7fff8000UL
+
+/*
+ * This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE     ((TASK_SIZE / 3) & ~(PAGE_SIZE))
+
+#ifdef __KERNEL__
+#define STACK_TOP      TASK_SIZE
+#define STACK_TOP_MAX  TASK_SIZE
+#endif
+
+/*
+ * If you change thread_struct remember to change the #defines below too!
+ */
+struct thread_struct {
+       unsigned long reg0, reg2, reg3;
+       unsigned long reg12, reg13, reg14, reg15, reg16;
+       unsigned long reg17, reg18, reg19, reg20, reg21;
+
+       unsigned long cp0_psr;
+       unsigned long cp0_ema;          /* Last user fault */
+       unsigned long cp0_badvaddr;     /* Last user fault */
+       unsigned long cp0_baduaddr;     /* Last kernel fault accessing USEG */
+       unsigned long error_code;
+       unsigned long trap_no;
+
+       unsigned long mflags;
+       unsigned long reg29;
+
+       unsigned long single_step;
+       unsigned long ss_nextcnt;
+
+       unsigned long insn1_type;
+       unsigned long addr1;
+       unsigned long insn1;
+
+       unsigned long insn2_type;
+       unsigned long addr2;
+       unsigned long insn2;
+
+       mm_segment_t current_ds;
+};
+
+#define INIT_THREAD {                                          \
+       .reg0                   = 0,                            \
+       .reg2                   = 0,                            \
+       .reg3                   = 0,                            \
+       .reg12                  = 0,                            \
+       .reg13                  = 0,                            \
+       .reg14                  = 0,                            \
+       .reg15                  = 0,                            \
+       .reg16                  = 0,                            \
+       .reg17                  = 0,                            \
+       .reg18                  = 0,                            \
+       .reg19                  = 0,                            \
+       .reg20                  = 0,                            \
+       .reg21                  = 0,                            \
+       .cp0_psr                = 0,                            \
+       .error_code             = 0,                            \
+       .trap_no                = 0,                            \
+}
+
+#define kstk_tos(tsk)          \
+       ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
+#define task_pt_regs(tsk)      ((struct pt_regs *)kstk_tos(tsk) - 1)
+
+#define KSTK_EIP(tsk)          (task_pt_regs(tsk)->cp0_epc)
+#define KSTK_ESP(tsk)          (task_pt_regs(tsk)->regs[29])
+
+#endif /* _ASM_SCORE_PROCESSOR_H */