projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 6bc9a396 CL |
2 | #ifndef _ASM_SCORE_PROCESSOR_H |
| 3 | #define _ASM_SCORE_PROCESSOR_H | |
| 4 | ||
| 5 | #include <linux/cpumask.h> | |
| 6 | #include <linux/threads.h> | |
| 7 | ||
| 8 | #include <asm/segment.h> | |
| 9 | ||
| 10 | struct task_struct; | |
| 11 | ||
| 12 | /* | |
| 13 | * System setup and hardware flags.. | |
| 14 | */ | |
| 15 | extern void (*cpu_wait)(void); | |
| 16 | ||
| 6bc9a396 CL |
17 | extern void start_thread(struct pt_regs *regs, |
| 18 | unsigned long pc, unsigned long sp); | |
| 19 | extern unsigned long get_wchan(struct task_struct *p); | |
| 20 | ||
| 21 | /* | |
| 22 | * Return current * instruction pointer ("program counter"). | |
| 23 | */ | |
| 24 | #define current_text_addr() ({ __label__ _l; _l: &&_l; }) | |
| 25 | ||
| 26 | #define cpu_relax() barrier() | |
| 27 | #define release_thread(thread) do {} while (0) | |
| 6bc9a396 CL |
28 | |
| 29 | /* | |
| 30 | * User space process size: 2GB. This is hardcoded into a few places, | |
| 31 | * so don't change it unless you know what you are doing. | |
| 32 | */ | |
| 33 | #define TASK_SIZE 0x7fff8000UL | |
| 34 | ||
| 35 | /* | |
| 36 | * This decides where the kernel will search for a free chunk of vm | |
| 37 | * space during mmap's. | |
| 38 | */ | |
| 39 | #define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE)) | |
| 40 | ||
| 41 | #ifdef __KERNEL__ | |
| 42 | #define STACK_TOP TASK_SIZE | |
| 43 | #define STACK_TOP_MAX TASK_SIZE | |
| 44 | #endif | |
| 45 | ||
| 46 | /* | |
| 47 | * If you change thread_struct remember to change the #defines below too! | |
| 48 | */ | |
| 49 | struct thread_struct { | |
| 50 | unsigned long reg0, reg2, reg3; | |
| 51 | unsigned long reg12, reg13, reg14, reg15, reg16; | |
| 52 | unsigned long reg17, reg18, reg19, reg20, reg21; | |
| 53 | ||
| 54 | unsigned long cp0_psr; | |
| 55 | unsigned long cp0_ema; /* Last user fault */ | |
| 56 | unsigned long cp0_badvaddr; /* Last user fault */ | |
| 57 | unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */ | |
| 58 | unsigned long error_code; | |
| 59 | unsigned long trap_no; | |
| 60 | ||
| 61 | unsigned long mflags; | |
| 62 | unsigned long reg29; | |
| 63 | ||
| 64 | unsigned long single_step; | |
| 65 | unsigned long ss_nextcnt; | |
| 66 | ||
| 67 | unsigned long insn1_type; | |
| 68 | unsigned long addr1; | |
| 69 | unsigned long insn1; | |
| 70 | ||
| 71 | unsigned long insn2_type; | |
| 72 | unsigned long addr2; | |
| 73 | unsigned long insn2; | |
| 74 | ||
| 75 | mm_segment_t current_ds; | |
| 76 | }; | |
| 77 | ||
| 78 | #define INIT_THREAD { \ | |
| 79 | .reg0 = 0, \ | |
| 80 | .reg2 = 0, \ | |
| 81 | .reg3 = 0, \ | |
| 82 | .reg12 = 0, \ | |
| 83 | .reg13 = 0, \ | |
| 84 | .reg14 = 0, \ | |
| 85 | .reg15 = 0, \ | |
| 86 | .reg16 = 0, \ | |
| 87 | .reg17 = 0, \ | |
| 88 | .reg18 = 0, \ | |
| 89 | .reg19 = 0, \ | |
| 90 | .reg20 = 0, \ | |
| 91 | .reg21 = 0, \ | |
| 92 | .cp0_psr = 0, \ | |
| 93 | .error_code = 0, \ | |
| 94 | .trap_no = 0, \ | |
| 95 | } | |
| 96 | ||
| 97 | #define kstk_tos(tsk) \ | |
| 98 | ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32) | |
| 99 | #define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1) | |
| 100 | ||
| 101 | #define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc) | |
| 102 | #define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29]) | |
| 103 | ||
| 104 | #endif /* _ASM_SCORE_PROCESSOR_H */ |