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-rw-r--r--include/asm-sh/processor.h247
-rw-r--r--include/asm-sh/processor_32.h248
-rw-r--r--include/asm-sh/processor_64.h277
3 files changed, 531 insertions, 241 deletions
diff --git a/include/asm-sh/processor.h b/include/asm-sh/processor.h
index fda68480f37..bf01f486c3e 100644
--- a/include/asm-sh/processor.h
+++ b/include/asm-sh/processor.h
@@ -1,31 +1,5 @@
-/*
- * include/asm-sh/processor.h
- *
- * Copyright (C) 1999, 2000 Niibe Yutaka
- * Copyright (C) 2002, 2003 Paul Mundt
- */
-
#ifndef __ASM_SH_PROCESSOR_H
#define __ASM_SH_PROCESSOR_H
-#ifdef __KERNEL__
-
-#include <linux/compiler.h>
-#include <asm/page.h>
-#include <asm/types.h>
-#include <asm/cache.h>
-#include <asm/ptrace.h>
-#include <asm/cpu-features.h>
-
-/*
- * Default implementation of macro that returns current
- * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ void *pc; __asm__("mova 1f, %0\n1:":"=z" (pc)); pc; })
-
-/* Core Processor Version Register */
-#define CCN_PVR 0xff000030
-#define CCN_CVR 0xff000040
-#define CCN_PRR 0xff000044
/*
* CPU type and hardware bug flags. Kept separately for each CPU.
@@ -57,229 +31,20 @@ enum cpu_type {
/* SH4AL-DSP types */
CPU_SH7343, CPU_SH7722,
+ /* SH-5 types */
+ CPU_SH5_101, CPU_SH5_103,
+
/* Unknown subtype */
CPU_SH_NONE
};
-struct sh_cpuinfo {
- unsigned int type;
- unsigned long loops_per_jiffy;
- unsigned long asid_cache;
-
- struct cache_info icache; /* Primary I-cache */
- struct cache_info dcache; /* Primary D-cache */
- struct cache_info scache; /* Secondary cache */
-
- unsigned long flags;
-} __attribute__ ((aligned(L1_CACHE_BYTES)));
-
-extern struct sh_cpuinfo cpu_data[];
-#define boot_cpu_data cpu_data[0]
-#define current_cpu_data cpu_data[smp_processor_id()]
-#define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
-
-/*
- * User space process size: 2GB.
- *
- * Since SH7709 and SH7750 have "area 7", we can't use 0x7c000000--0x7fffffff
- */
-#define TASK_SIZE 0x7c000000UL
-
-/* This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
-
-/*
- * Bit of SR register
- *
- * FD-bit:
- * When it's set, it means the processor doesn't have right to use FPU,
- * and it results exception when the floating operation is executed.
- *
- * IMASK-bit:
- * Interrupt level mask
- */
-#define SR_FD 0x00008000
-#define SR_DSP 0x00001000
-#define SR_IMASK 0x000000f0
-
-/*
- * FPU structure and data
- */
-
-struct sh_fpu_hard_struct {
- unsigned long fp_regs[16];
- unsigned long xfp_regs[16];
- unsigned long fpscr;
- unsigned long fpul;
-
- long status; /* software status information */
-};
-
-/* Dummy fpu emulator */
-struct sh_fpu_soft_struct {
- unsigned long fp_regs[16];
- unsigned long xfp_regs[16];
- unsigned long fpscr;
- unsigned long fpul;
-
- unsigned char lookahead;
- unsigned long entry_pc;
-};
-
-union sh_fpu_union {
- struct sh_fpu_hard_struct hard;
- struct sh_fpu_soft_struct soft;
-};
-
-struct thread_struct {
- /* Saved registers when thread is descheduled */
- unsigned long sp;
- unsigned long pc;
-
- /* Hardware debugging registers */
- unsigned long ubc_pc;
-
- /* floating point info */
- union sh_fpu_union fpu;
-};
-
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
-/* Count of active tasks with UBC settings */
-extern int ubc_usercnt;
-
-#define INIT_THREAD { \
- .sp = sizeof(init_stack) + (long) &init_stack, \
-}
-
-/*
- * Do necessary setup to start up a newly executed thread.
- */
-#define start_thread(regs, new_pc, new_sp) \
- set_fs(USER_DS); \
- regs->pr = 0; \
- regs->sr = SR_FD; /* User mode. */ \
- regs->pc = new_pc; \
- regs->regs[15] = new_sp
-
-/* Forward declaration, a strange C thing */
-struct task_struct;
-struct mm_struct;
-
-/* Free all resources held by a thread. */
-extern void release_thread(struct task_struct *);
-
-/* Prepare to copy thread state - unlazy all lazy status */
-#define prepare_to_copy(tsk) do { } while (0)
-
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
-/* Copy and release all segment info associated with a VM */
-#define copy_segments(p, mm) do { } while(0)
-#define release_segments(mm) do { } while(0)
-
-/*
- * FPU lazy state save handling.
- */
-
-static __inline__ void disable_fpu(void)
-{
- unsigned long __dummy;
-
- /* Set FD flag in SR */
- __asm__ __volatile__("stc sr, %0\n\t"
- "or %1, %0\n\t"
- "ldc %0, sr"
- : "=&r" (__dummy)
- : "r" (SR_FD));
-}
-
-static __inline__ void enable_fpu(void)
-{
- unsigned long __dummy;
-
- /* Clear out FD flag in SR */
- __asm__ __volatile__("stc sr, %0\n\t"
- "and %1, %0\n\t"
- "ldc %0, sr"
- : "=&r" (__dummy)
- : "r" (~SR_FD));
-}
-
-static __inline__ void release_fpu(struct pt_regs *regs)
-{
- regs->sr |= SR_FD;
-}
-
-static __inline__ void grab_fpu(struct pt_regs *regs)
-{
- regs->sr &= ~SR_FD;
-}
-
-extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
-
-#define unlazy_fpu(tsk, regs) do { \
- if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
- save_fpu(tsk, regs); \
- } \
-} while (0)
-
-#define clear_fpu(tsk, regs) do { \
- if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
- clear_tsk_thread_flag(tsk, TIF_USEDFPU); \
- release_fpu(regs); \
- } \
-} while (0)
-
-/* Double presision, NANS as NANS, rounding to nearest, no exceptions */
-#define FPSCR_INIT 0x00080000
-
-#define FPSCR_CAUSE_MASK 0x0001f000 /* Cause bits */
-#define FPSCR_FLAG_MASK 0x0000007c /* Flag bits */
-
-/*
- * Return saved PC of a blocked thread.
- */
-#define thread_saved_pc(tsk) (tsk->thread.pc)
-
-void show_trace(struct task_struct *tsk, unsigned long *sp,
- struct pt_regs *regs);
-extern unsigned long get_wchan(struct task_struct *p);
-
-#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
-#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[15])
-
-#define cpu_sleep() __asm__ __volatile__ ("sleep" : : : "memory")
-#define cpu_relax() barrier()
-
-#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH3) || \
- defined(CONFIG_CPU_SH4)
-#define PREFETCH_STRIDE L1_CACHE_BYTES
-#define ARCH_HAS_PREFETCH
-#define ARCH_HAS_PREFETCHW
-static inline void prefetch(void *x)
-{
- __asm__ __volatile__ ("pref @%0\n\t" : : "r" (x) : "memory");
-}
-
-#define prefetchw(x) prefetch(x)
-#endif
-
-#ifdef CONFIG_VSYSCALL
-extern int vsyscall_init(void);
+#ifdef CONFIG_SUPERH32
+# include "processor_32.h"
#else
-#define vsyscall_init() do { } while (0)
+# include "processor_64.h"
#endif
/* arch/sh/kernel/setup.c */
const char *get_cpu_subtype(struct sh_cpuinfo *c);
-#endif /* __KERNEL__ */
#endif /* __ASM_SH_PROCESSOR_H */
diff --git a/include/asm-sh/processor_32.h b/include/asm-sh/processor_32.h
new file mode 100644
index 00000000000..e10d0ee0c22
--- /dev/null
+++ b/include/asm-sh/processor_32.h
@@ -0,0 +1,248 @@
+/*
+ * include/asm-sh/processor.h
+ *
+ * Copyright (C) 1999, 2000 Niibe Yutaka
+ * Copyright (C) 2002, 2003 Paul Mundt
+ */
+
+#ifndef __ASM_SH_PROCESSOR_32_H
+#define __ASM_SH_PROCESSOR_32_H
+#ifdef __KERNEL__
+
+#include <linux/compiler.h>
+#include <asm/page.h>
+#include <asm/types.h>
+#include <asm/cache.h>
+#include <asm/ptrace.h>
+#include <asm/cpu-features.h>
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ void *pc; __asm__("mova 1f, %0\n1:":"=z" (pc)); pc; })
+
+/* Core Processor Version Register */
+#define CCN_PVR 0xff000030
+#define CCN_CVR 0xff000040
+#define CCN_PRR 0xff000044
+
+struct sh_cpuinfo {
+ unsigned int type;
+ unsigned long loops_per_jiffy;
+ unsigned long asid_cache;
+
+ struct cache_info icache; /* Primary I-cache */
+ struct cache_info dcache; /* Primary D-cache */
+ struct cache_info scache; /* Secondary cache */
+
+ unsigned long flags;
+} __attribute__ ((aligned(L1_CACHE_BYTES)));
+
+extern struct sh_cpuinfo cpu_data[];
+#define boot_cpu_data cpu_data[0]
+#define current_cpu_data cpu_data[smp_processor_id()]
+#define raw_current_cpu_data cpu_data[raw_smp_processor_id()]
+
+/*
+ * User space process size: 2GB.
+ *
+ * Since SH7709 and SH7750 have "area 7", we can't use 0x7c000000--0x7fffffff
+ */
+#define TASK_SIZE 0x7c000000UL
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
+
+/*
+ * Bit of SR register
+ *
+ * FD-bit:
+ * When it's set, it means the processor doesn't have right to use FPU,
+ * and it results exception when the floating operation is executed.
+ *
+ * IMASK-bit:
+ * Interrupt level mask
+ */
+#define SR_FD 0x00008000
+#define SR_DSP 0x00001000
+#define SR_IMASK 0x000000f0
+
+/*
+ * FPU structure and data
+ */
+
+struct sh_fpu_hard_struct {
+ unsigned long fp_regs[16];
+ unsigned long xfp_regs[16];
+ unsigned long fpscr;
+ unsigned long fpul;
+
+ long status; /* software status information */
+};
+
+/* Dummy fpu emulator */
+struct sh_fpu_soft_struct {
+ unsigned long fp_regs[16];
+ unsigned long xfp_regs[16];
+ unsigned long fpscr;
+ unsigned long fpul;
+
+ unsigned char lookahead;
+ unsigned long entry_pc;
+};
+
+union sh_fpu_union {
+ struct sh_fpu_hard_struct hard;
+ struct sh_fpu_soft_struct soft;
+};
+
+struct thread_struct {
+ /* Saved registers when thread is descheduled */
+ unsigned long sp;
+ unsigned long pc;
+
+ /* Hardware debugging registers */
+ unsigned long ubc_pc;
+
+ /* floating point info */
+ union sh_fpu_union fpu;
+};
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+/* Count of active tasks with UBC settings */
+extern int ubc_usercnt;
+
+#define INIT_THREAD { \
+ .sp = sizeof(init_stack) + (long) &init_stack, \
+}
+
+/*
+ * Do necessary setup to start up a newly executed thread.
+ */
+#define start_thread(regs, new_pc, new_sp) \
+ set_fs(USER_DS); \
+ regs->pr = 0; \
+ regs->sr = SR_FD; /* User mode. */ \
+ regs->pc = new_pc; \
+ regs->regs[15] = new_sp
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+#define prepare_to_copy(tsk) do { } while (0)
+
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/* Copy and release all segment info associated with a VM */
+#define copy_segments(p, mm) do { } while(0)
+#define release_segments(mm) do { } while(0)
+
+/*
+ * FPU lazy state save handling.
+ */
+
+static __inline__ void disable_fpu(void)
+{
+ unsigned long __dummy;
+
+ /* Set FD flag in SR */
+ __asm__ __volatile__("stc sr, %0\n\t"
+ "or %1, %0\n\t"
+ "ldc %0, sr"
+ : "=&r" (__dummy)
+ : "r" (SR_FD));
+}
+
+static __inline__ void enable_fpu(void)
+{
+ unsigned long __dummy;
+
+ /* Clear out FD flag in SR */
+ __asm__ __volatile__("stc sr, %0\n\t"
+ "and %1, %0\n\t"
+ "ldc %0, sr"
+ : "=&r" (__dummy)
+ : "r" (~SR_FD));
+}
+
+static __inline__ void release_fpu(struct pt_regs *regs)
+{
+ regs->sr |= SR_FD;
+}
+
+static __inline__ void grab_fpu(struct pt_regs *regs)
+{
+ regs->sr &= ~SR_FD;
+}
+
+extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
+
+#define unlazy_fpu(tsk, regs) do { \
+ if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
+ save_fpu(tsk, regs); \
+ } \
+} while (0)
+
+#define clear_fpu(tsk, regs) do { \
+ if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \
+ clear_tsk_thread_flag(tsk, TIF_USEDFPU); \
+ release_fpu(regs); \
+ } \
+} while (0)
+
+/* Double presision, NANS as NANS, rounding to nearest, no exceptions */
+#define FPSCR_INIT 0x00080000
+
+#define FPSCR_CAUSE_MASK 0x0001f000 /* Cause bits */
+#define FPSCR_FLAG_MASK 0x0000007c /* Flag bits */
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+#define thread_saved_pc(tsk) (tsk->thread.pc)
+
+void show_trace(struct task_struct *tsk, unsigned long *sp,
+ struct pt_regs *regs);
+extern unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[15])
+
+#define cpu_sleep() __asm__ __volatile__ ("sleep" : : : "memory")
+#define cpu_relax() barrier()
+
+#if defined(CONFIG_CPU_SH2A) || defined(CONFIG_CPU_SH3) || \
+ defined(CONFIG_CPU_SH4)
+#define PREFETCH_STRIDE L1_CACHE_BYTES
+#define ARCH_HAS_PREFETCH
+#define ARCH_HAS_PREFETCHW
+static inline void prefetch(void *x)
+{
+ __asm__ __volatile__ ("pref @%0\n\t" : : "r" (x) : "memory");
+}
+
+#define prefetchw(x) prefetch(x)
+#endif
+
+#ifdef CONFIG_VSYSCALL
+extern int vsyscall_init(void);
+#else
+#define vsyscall_init() do { } while (0)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __ASM_SH_PROCESSOR_32_H */
diff --git a/include/asm-sh/processor_64.h b/include/asm-sh/processor_64.h
new file mode 100644
index 00000000000..5430e437b91
--- /dev/null
+++ b/include/asm-sh/processor_64.h
@@ -0,0 +1,277 @@
+#ifndef __ASM_SH_PROCESSOR_64_H
+#define __ASM_SH_PROCESSOR_64_H
+
+/*
+ * include/asm-sh/processor_64.h
+ *
+ * Copyright (C) 2000, 2001 Paolo Alberelli
+ * Copyright (C) 2003 Paul Mundt
+ * Copyright (C) 2004 Richard Curnow
+ *
+ * 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.
+ */
+#ifndef __ASSEMBLY__
+
+#include <linux/compiler.h>
+#include <asm/page.h>
+#include <asm/types.h>
+#include <asm/cache.h>
+#include <asm/cpu/registers.h>
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ \
+void *pc; \
+unsigned long long __dummy = 0; \
+__asm__("gettr tr0, %1\n\t" \
+ "pta 4, tr0\n\t" \
+ "gettr tr0, %0\n\t" \
+ "ptabs %1, tr0\n\t" \
+ :"=r" (pc), "=r" (__dummy) \
+ : "1" (__dummy)); \
+pc; })
+
+/*
+ * TLB information structure
+ *
+ * Defined for both I and D tlb, per-processor.
+ */
+struct tlb_info {
+ unsigned long long next;
+ unsigned long long first;
+ unsigned long long last;
+
+ unsigned int entries;
+ unsigned int step;
+
+ unsigned long flags;
+};
+
+struct sh_cpuinfo {
+ enum cpu_type type;
+ unsigned long loops_per_jiffy;
+
+ char hard_math;
+
+ unsigned long *pgd_quick;
+ unsigned long *pmd_quick;
+ unsigned long *pte_quick;
+ unsigned long pgtable_cache_sz;
+ unsigned int cpu_clock, master_clock, bus_clock, module_clock;
+
+ /* Cache info */
+ struct cache_info icache;
+ struct cache_info dcache;
+
+ /* TLB info */
+ struct tlb_info itlb;
+ struct tlb_info dtlb;
+};
+
+extern struct sh_cpuinfo boot_cpu_data;
+
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+
+#endif
+
+/*
+ * User space process size: 2GB - 4k.
+ */
+#define TASK_SIZE 0x7ffff000UL
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
+
+/*
+ * Bit of SR register
+ *
+ * FD-bit:
+ * When it's set, it means the processor doesn't have right to use FPU,
+ * and it results exception when the floating operation is executed.
+ *
+ * IMASK-bit:
+ * Interrupt level mask
+ *
+ * STEP-bit:
+ * Single step bit
+ *
+ */
+#define SR_FD 0x00008000
+
+#if defined(CONFIG_SH64_SR_WATCH)
+#define SR_MMU 0x84000000
+#else
+#define SR_MMU 0x80000000
+#endif
+
+#define SR_IMASK 0x000000f0
+#define SR_SSTEP 0x08000000
+
+#ifndef __ASSEMBLY__
+
+/*
+ * FPU structure and data : require 8-byte alignment as we need to access it
+ with fld.p, fst.p
+ */
+
+struct sh_fpu_hard_struct {
+ unsigned long fp_regs[64];
+ unsigned int fpscr;
+ /* long status; * software status information */
+};
+
+#if 0
+/* Dummy fpu emulator */
+struct sh_fpu_soft_struct {
+ unsigned long long fp_regs[32];
+ unsigned int fpscr;
+ unsigned char lookahead;
+ unsigned long entry_pc;
+};
+#endif
+
+union sh_fpu_union {
+ struct sh_fpu_hard_struct hard;
+ /* 'hard' itself only produces 32 bit alignment, yet we need
+ to access it using 64 bit load/store as well. */
+ unsigned long long alignment_dummy;
+};
+
+struct thread_struct {
+ unsigned long sp;
+ unsigned long pc;
+ /* This stores the address of the pt_regs built during a context
+ switch, or of the register save area built for a kernel mode
+ exception. It is used for backtracing the stack of a sleeping task
+ or one that traps in kernel mode. */
+ struct pt_regs *kregs;
+ /* This stores the address of the pt_regs constructed on entry from
+ user mode. It is a fixed value over the lifetime of a process, or
+ NULL for a kernel thread. */
+ struct pt_regs *uregs;
+
+ unsigned long trap_no, error_code;
+ unsigned long address;
+ /* Hardware debugging registers may come here */
+
+ /* floating point info */
+ union sh_fpu_union fpu;
+};
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define INIT_MMAP \
+{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL }
+
+extern struct pt_regs fake_swapper_regs;
+
+#define INIT_THREAD { \
+ .sp = sizeof(init_stack) + \
+ (long) &init_stack, \
+ .pc = 0, \
+ .kregs = &fake_swapper_regs, \
+ .uregs = NULL, \
+ .trap_no = 0, \
+ .error_code = 0, \
+ .address = 0, \
+ .fpu = { { { 0, } }, } \
+}
+
+/*
+ * Do necessary setup to start up a newly executed thread.
+ */
+#define SR_USER (SR_MMU | SR_FD)
+
+#define start_thread(regs, new_pc, new_sp) \
+ set_fs(USER_DS); \
+ regs->sr = SR_USER; /* User mode. */ \
+ regs->pc = new_pc - 4; /* Compensate syscall exit */ \
+ regs->pc |= 1; /* Set SHmedia ! */ \
+ regs->regs[18] = 0; \
+ regs->regs[15] = new_sp
+
+/* Forward declaration, a strange C thing */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+extern void release_thread(struct task_struct *);
+/*
+ * create a kernel thread without removing it from tasklists
+ */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+
+/* Copy and release all segment info associated with a VM */
+#define copy_segments(p, mm) do { } while (0)
+#define release_segments(mm) do { } while (0)
+#define forget_segments() do { } while (0)
+#define prepare_to_copy(tsk) do { } while (0)
+/*
+ * FPU lazy state save handling.
+ */
+
+static inline void release_fpu(void)
+{
+ unsigned long long __dummy;
+
+ /* Set FD flag in SR */
+ __asm__ __volatile__("getcon " __SR ", %0\n\t"
+ "or %0, %1, %0\n\t"
+ "putcon %0, " __SR "\n\t"
+ : "=&r" (__dummy)
+ : "r" (SR_FD));
+}
+
+static inline void grab_fpu(void)
+{
+ unsigned long long __dummy;
+
+ /* Clear out FD flag in SR */
+ __asm__ __volatile__("getcon " __SR ", %0\n\t"
+ "and %0, %1, %0\n\t"
+ "putcon %0, " __SR "\n\t"
+ : "=&r" (__dummy)
+ : "r" (~SR_FD));
+}
+
+/* Round to nearest, no exceptions on inexact, overflow, underflow,
+ zero-divide, invalid. Configure option for whether to flush denorms to
+ zero, or except if a denorm is encountered. */
+#if defined(CONFIG_SH64_FPU_DENORM_FLUSH)
+#define FPSCR_INIT 0x00040000
+#else
+#define FPSCR_INIT 0x00000000
+#endif
+
+/* Save the current FP regs */
+void fpsave(struct sh_fpu_hard_struct *fpregs);
+
+/* Initialise the FP state of a task */
+void fpinit(struct sh_fpu_hard_struct *fpregs);
+
+extern struct task_struct *last_task_used_math;
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+#define thread_saved_pc(tsk) (tsk->thread.pc)
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk) ((tsk)->thread.pc)
+#define KSTK_ESP(tsk) ((tsk)->thread.sp)
+
+#define cpu_relax() barrier()
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ASM_SH_PROCESSOR_64_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 10:20:30 +0000