1 files changed, 201 insertions, 0 deletions
diff --git a/include/asm-ppc/processor.h b/include/asm-ppc/processor.h
new file mode 100644
index 000000000000..b05b5d9cae20
--- /dev/null
+++ b/include/asm-ppc/processor.h
@@ -0,0 +1,201 @@
+#ifdef __KERNEL__
+#ifndef __ASM_PPC_PROCESSOR_H
+#define __ASM_PPC_PROCESSOR_H
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr() ({ __label__ _l; _l: &&_l;})
+
+#include <linux/config.h>
+#include <linux/stringify.h>
+
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <asm/mpc8xx.h>
+#include <asm/reg.h>
+
+/* We only need to define a new _MACH_xxx for machines which are part of
+ * a configuration which supports more than one type of different machine.
+ * This is currently limited to CONFIG_PPC_MULTIPLATFORM and CHRP/PReP/PMac.
+ * -- Tom
+ */
+#define _MACH_prep	0x00000001
+#define _MACH_Pmac	0x00000002	/* pmac or pmac clone (non-chrp) */
+#define _MACH_chrp	0x00000004	/* chrp machine */
+
+/* see residual.h for these */
+#define _PREP_Motorola	0x01	/* motorola prep */
+#define _PREP_Firm	0x02	/* firmworks prep */
+#define _PREP_IBM	0x00	/* ibm prep */
+#define _PREP_Bull	0x03	/* bull prep */
+
+/* these are arbitrary */
+#define _CHRP_Motorola	0x04	/* motorola chrp, the cobra */
+#define _CHRP_IBM	0x05	/* IBM chrp, the longtrail and longtrail 2 */
+#define _CHRP_Pegasos	0x06	/* Genesi/bplan's Pegasos and Pegasos2 */
+
+#define _GLOBAL(n)\
+	.stabs __stringify(n:F-1),N_FUN,0,0,n;\
+	.globl n;\
+n:
+
+/*
+ * this is the minimum allowable io space due to the location
+ * of the io areas on prep (first one at 0x80000000) but
+ * as soon as I get around to remapping the io areas with the BATs
+ * to match the mac we can raise this. -- Cort
+ */
+#define TASK_SIZE	(CONFIG_TASK_SIZE)
+
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_PPC_MULTIPLATFORM
+extern int _machine;
+
+/* what kind of prep workstation we are */
+extern int _prep_type;
+extern int _chrp_type;
+
+/*
+ * This is used to identify the board type from a given PReP board
+ * vendor. Board revision is also made available.
+ */
+extern unsigned char ucSystemType;
+extern unsigned char ucBoardRev;
+extern unsigned char ucBoardRevMaj, ucBoardRevMin;
+#else
+#define _machine 0
+#endif /* CONFIG_PPC_MULTIPLATFORM */
+
+struct task_struct;
+void start_thread(struct pt_regs *regs, unsigned long nip, unsigned long sp);
+void release_thread(struct task_struct *);
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct *tsk);
+
+/*
+ * Create a new kernel thread.
+ */
+extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
+
+/* Lazy FPU handling on uni-processor */
+extern struct task_struct *last_task_used_math;
+extern struct task_struct *last_task_used_altivec;
+extern struct task_struct *last_task_used_spe;
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE	(TASK_SIZE / 8 * 3)
+
+typedef struct {
+	unsigned long seg;
+} mm_segment_t;
+
+struct thread_struct {
+	unsigned long	ksp;		/* Kernel stack pointer */
+	struct pt_regs	*regs;		/* Pointer to saved register state */
+	mm_segment_t	fs;		/* for get_fs() validation */
+	void		*pgdir;		/* root of page-table tree */
+	int		fpexc_mode;	/* floating-point exception mode */
+	signed long	last_syscall;
+#if defined(CONFIG_4xx) || defined (CONFIG_BOOKE)
+	unsigned long	dbcr0;		/* debug control register values */
+	unsigned long	dbcr1;
+#endif
+	double		fpr[32];	/* Complete floating point set */
+	unsigned long	fpscr_pad;	/* fpr ... fpscr must be contiguous */
+	unsigned long	fpscr;		/* Floating point status */
+#ifdef CONFIG_ALTIVEC
+	/* Complete AltiVec register set */
+	vector128	vr[32] __attribute((aligned(16)));
+	/* AltiVec status */
+	vector128	vscr __attribute((aligned(16)));
+	unsigned long	vrsave;
+	int		used_vr;	/* set if process has used altivec */
+#endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_SPE
+	unsigned long	evr[32];	/* upper 32-bits of SPE regs */
+	u64		acc;		/* Accumulator */
+	unsigned long	spefscr;	/* SPE & eFP status */
+	int		used_spe;	/* set if process has used spe */
+#endif /* CONFIG_SPE */
+};
+
+#define ARCH_MIN_TASKALIGN 16
+
+#define INIT_SP		(sizeof(init_stack) + (unsigned long) &init_stack)
+
+#define INIT_THREAD { \
+	.ksp = INIT_SP, \
+	.fs = KERNEL_DS, \
+	.pgdir = swapper_pg_dir, \
+	.fpexc_mode = MSR_FE0 | MSR_FE1, \
+}
+
+/*
+ * Return saved PC of a blocked thread. For now, this is the "user" PC
+ */
+#define thread_saved_pc(tsk)	\
+	((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
+
+unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk)	((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
+#define KSTK_ESP(tsk)	((tsk)->thread.regs? (tsk)->thread.regs->gpr[1]: 0)
+
+/* Get/set floating-point exception mode */
+#define GET_FPEXC_CTL(tsk, adr)	get_fpexc_mode((tsk), (adr))
+#define SET_FPEXC_CTL(tsk, val)	set_fpexc_mode((tsk), (val))
+
+extern int get_fpexc_mode(struct task_struct *tsk, unsigned long adr);
+extern int set_fpexc_mode(struct task_struct *tsk, unsigned int val);
+
+static inline unsigned int __unpack_fe01(unsigned int msr_bits)
+{
+	return ((msr_bits & MSR_FE0) >> 10) | ((msr_bits & MSR_FE1) >> 8);
+}
+
+static inline unsigned int __pack_fe01(unsigned int fpmode)
+{
+	return ((fpmode << 10) & MSR_FE0) | ((fpmode << 8) & MSR_FE1);
+}
+
+/* in process.c - for early bootup debug -- Cort */
+int ll_printk(const char *, ...);
+void ll_puts(const char *);
+
+/* In misc.c */
+void _nmask_and_or_msr(unsigned long nmask, unsigned long or_val);
+
+#define have_of (_machine == _MACH_chrp || _machine == _MACH_Pmac)
+
+#define cpu_relax()	barrier()
+
+/*
+ * Prefetch macros.
+ */
+#define ARCH_HAS_PREFETCH
+#define ARCH_HAS_PREFETCHW
+#define ARCH_HAS_SPINLOCK_PREFETCH
+
+extern inline void prefetch(const void *x)
+{
+	 __asm__ __volatile__ ("dcbt 0,%0" : : "r" (x));
+}
+
+extern inline void prefetchw(const void *x)
+{
+	 __asm__ __volatile__ ("dcbtst 0,%0" : : "r" (x));
+}
+
+#define spin_lock_prefetch(x)	prefetchw(x)
+
+extern int emulate_altivec(struct pt_regs *regs);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_PPC_PROCESSOR_H */
+#endif /* __KERNEL__ */