--- /dev/null
+/*
+ * 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.
+ *
+ * Copyright (C) 1994 Waldorf GMBH
+ * Copyright (C) 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003 Ralf Baechle
+ * Copyright (C) 1996 Paul M. Antoine
+ * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_PROCESSOR_H
+#define _ASM_PROCESSOR_H
+
+#include <asm/isadep.h>
+
+#include <asm/cachectl.h>
+#include <asm/mipsregs.h>
+#include <asm/reg.h>
+#include <asm/system.h>
+
+/*
+ * Return current * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+
+/*
+ * System setup and hardware flags..
+ */
+extern void (*cpu_wait)(void);
+
+extern unsigned int vced_count, vcei_count;
+
+#define NUM_FPU_REGS 32
+
+typedef __u64 fpureg_t;
+
+/*
+ * It would be nice to add some more fields for emulator statistics, but there
+ * are a number of fixed offsets in offset.h and elsewhere that would have to
+ * be recalculated by hand. So the additional information will be private to
+ * the FPU emulator for now. See asm-mips/fpu_emulator.h.
+ */
+
+struct mips_fpu_struct {
+ fpureg_t fpr[NUM_FPU_REGS];
+ unsigned int fcr31;
+};
+
+#define NUM_DSP_REGS 6
+
+typedef __u32 dspreg_t;
+
+struct mips_dsp_state {
+ dspreg_t dspr[NUM_DSP_REGS];
+ unsigned int dspcontrol;
+};
+
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define ARCH_MIN_TASKALIGN 8
+
+struct mips_abi;
+
+/*
+ * If you change thread_struct remember to change the #defines below too!
+ */
+struct thread_struct {
+ /* Saved main processor registers. */
+ unsigned long reg16;
+ unsigned long reg17, reg18, reg19, reg20, reg21, reg22, reg23;
+ unsigned long reg29, reg30, reg31;
+
+ /* Saved cp0 stuff. */
+ unsigned long cp0_status;
+
+ /* Saved fpu/fpu emulator stuff. */
+ struct mips_fpu_struct fpu;
+#ifdef CONFIG_MIPS_MT_FPAFF
+ /* Emulated instruction count */
+ unsigned long emulated_fp;
+ /* Saved per-thread scheduler affinity mask */
+ cpumask_t user_cpus_allowed;
+#endif /* CONFIG_MIPS_MT_FPAFF */
+
+ /* Saved state of the DSP ASE, if available. */
+ struct mips_dsp_state dsp;
+
+ /* Other stuff associated with the thread. */
+ 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 irix_trampoline; /* Wheee... */
+ unsigned long irix_oldctx;
+ struct mips_abi *abi;
+};
+
+struct task_struct;
+
+/* Free all resources held by a thread. */
+#define release_thread(thread) do { } while(0)
+
+/* Prepare to copy thread state - unlazy all lazy status */
+#define prepare_to_copy(tsk) do { } while (0)
+
+#define cpu_relax() barrier()
+
+/*
+ * Return_address is a replacement for __builtin_return_address(count)
+ * which on certain architectures cannot reasonably be implemented in GCC
+ * (MIPS, Alpha) or is unuseable with -fomit-frame-pointer (i386).
+ * Note that __builtin_return_address(x>=1) is forbidden because GCC
+ * aborts compilation on some CPUs. It's simply not possible to unwind
+ * some CPU's stackframes.
+ *
+ * __builtin_return_address works only for non-leaf functions. We avoid the
+ * overhead of a function call by forcing the compiler to save the return
+ * address register on the stack.
+ */
+#define return_address() ({__asm__ __volatile__("":::"$31");__builtin_return_address(0);})
+
+#ifdef CONFIG_CPU_HAS_PREFETCH
+
+#define ARCH_HAS_PREFETCH
+
+static inline void prefetch(const void *addr)
+{
+ __asm__ __volatile__(
+ " .set mips4 \n"
+ " pref %0, (%1) \n"
+ " .set mips0 \n"
+ :
+ : "i" (Pref_Load), "r" (addr));
+}
+
+#endif
+
+#endif /* _ASM_PROCESSOR_H */
Code Review / kvmfornfv.git / blobdiff