mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
a3ab2ae7f6
Update definitions for processor, registers as well as assemby macros. Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
#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 */
|