mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
2.8 KiB
109 lines
2.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* include/asm/processor.h |
|
* |
|
* Copyright (C) 1994 David S. Miller ([email protected]) |
|
*/ |
|
|
|
#ifndef __ASM_SPARC_PROCESSOR_H |
|
#define __ASM_SPARC_PROCESSOR_H |
|
|
|
#include <asm/psr.h> |
|
#include <asm/ptrace.h> |
|
#include <asm/head.h> |
|
#include <asm/signal.h> |
|
#include <asm/page.h> |
|
|
|
/* Whee, this is STACK_TOP + PAGE_SIZE and the lowest kernel address too... |
|
* That one page is used to protect kernel from intruders, so that |
|
* we can make our access_ok test faster |
|
*/ |
|
#define TASK_SIZE PAGE_OFFSET |
|
#ifdef __KERNEL__ |
|
#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE) |
|
#define STACK_TOP_MAX STACK_TOP |
|
#endif /* __KERNEL__ */ |
|
|
|
struct task_struct; |
|
|
|
#ifdef __KERNEL__ |
|
struct fpq { |
|
unsigned long *insn_addr; |
|
unsigned long insn; |
|
}; |
|
#endif |
|
|
|
typedef struct { |
|
int seg; |
|
} mm_segment_t; |
|
|
|
/* The Sparc processor specific thread struct. */ |
|
struct thread_struct { |
|
struct pt_regs *kregs; |
|
unsigned int _pad1; |
|
|
|
/* Special child fork kpsr/kwim values. */ |
|
unsigned long fork_kpsr __attribute__ ((aligned (8))); |
|
unsigned long fork_kwim; |
|
|
|
/* Floating point regs */ |
|
unsigned long float_regs[32] __attribute__ ((aligned (8))); |
|
unsigned long fsr; |
|
unsigned long fpqdepth; |
|
struct fpq fpqueue[16]; |
|
mm_segment_t current_ds; |
|
}; |
|
|
|
#define INIT_THREAD { \ |
|
.current_ds = KERNEL_DS, \ |
|
.kregs = (struct pt_regs *)(init_stack+THREAD_SIZE)-1 \ |
|
} |
|
|
|
/* Do necessary setup to start up a newly executed thread. */ |
|
static inline void start_thread(struct pt_regs * regs, unsigned long pc, |
|
unsigned long sp) |
|
{ |
|
register unsigned long zero asm("g1"); |
|
|
|
regs->psr = (regs->psr & (PSR_CWP)) | PSR_S; |
|
regs->pc = ((pc & (~3)) - 4); |
|
regs->npc = regs->pc + 4; |
|
regs->y = 0; |
|
zero = 0; |
|
__asm__ __volatile__("std\t%%g0, [%0 + %3 + 0x00]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x08]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x10]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x18]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x20]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x28]\n\t" |
|
"std\t%%g0, [%0 + %3 + 0x30]\n\t" |
|
"st\t%1, [%0 + %3 + 0x38]\n\t" |
|
"st\t%%g0, [%0 + %3 + 0x3c]" |
|
: /* no outputs */ |
|
: "r" (regs), |
|
"r" (sp - sizeof(struct reg_window32)), |
|
"r" (zero), |
|
"i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0])) |
|
: "memory"); |
|
} |
|
|
|
/* Free all resources held by a thread. */ |
|
#define release_thread(tsk) do { } while(0) |
|
|
|
unsigned long get_wchan(struct task_struct *); |
|
|
|
#define task_pt_regs(tsk) ((tsk)->thread.kregs) |
|
#define KSTK_EIP(tsk) ((tsk)->thread.kregs->pc) |
|
#define KSTK_ESP(tsk) ((tsk)->thread.kregs->u_regs[UREG_FP]) |
|
|
|
#ifdef __KERNEL__ |
|
|
|
extern struct task_struct *last_task_used_math; |
|
int do_mathemu(struct pt_regs *regs, struct task_struct *fpt); |
|
|
|
#define cpu_relax() barrier() |
|
|
|
extern void (*sparc_idle)(void); |
|
|
|
#endif |
|
|
|
#endif /* __ASM_SPARC_PROCESSOR_H */
|
|
|