projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 6dea1ba1 G |
2 | /* |
| 3 | * linux/arch/unicore32/include/asm/ptrace.h | |
| 4 | * | |
| 5 | * Code specific to PKUnity SoC and UniCore ISA | |
| 6 | * | |
| 7 | * Copyright (C) 2001-2010 GUAN Xue-tao | |
| 6dea1ba1 G |
8 | */ |
| 9 | #ifndef __UNICORE_PTRACE_H__ | |
| 10 | #define __UNICORE_PTRACE_H__ | |
| 11 | ||
| e8ce15a6 | 12 | #include <uapi/asm/ptrace.h> |
| 6dea1ba1 G |
13 | |
| 14 | #ifndef __ASSEMBLY__ | |
| 15 | ||
| 6dea1ba1 G |
16 | #define user_mode(regs) \ |
| 17 | (processor_mode(regs) == USER_MODE) | |
| 18 | ||
| 19 | #define processor_mode(regs) \ | |
| 20 | ((regs)->UCreg_asr & MODE_MASK) | |
| 21 | ||
| 22 | #define interrupts_enabled(regs) \ | |
| 23 | (!((regs)->UCreg_asr & PSR_I_BIT)) | |
| 24 | ||
| 25 | #define fast_interrupts_enabled(regs) \ | |
| 26 | (!((regs)->UCreg_asr & PSR_R_BIT)) | |
| 27 | ||
| 28 | /* Are the current registers suitable for user mode? | |
| 29 | * (used to maintain security in signal handlers) | |
| 30 | */ | |
| 31 | static inline int valid_user_regs(struct pt_regs *regs) | |
| 32 | { | |
| 33 | unsigned long mode = regs->UCreg_asr & MODE_MASK; | |
| 34 | ||
| 35 | /* | |
| 36 | * Always clear the R (REAL) bits | |
| 37 | */ | |
| 38 | regs->UCreg_asr &= ~(PSR_R_BIT); | |
| 39 | ||
| 40 | if ((regs->UCreg_asr & PSR_I_BIT) == 0) { | |
| 41 | if (mode == USER_MODE) | |
| 42 | return 1; | |
| 43 | } | |
| 44 | ||
| 45 | /* | |
| 46 | * Force ASR to something logical... | |
| 47 | */ | |
| 48 | regs->UCreg_asr &= PSR_f | USER_MODE; | |
| 49 | ||
| 50 | return 0; | |
| 51 | } | |
| 52 | ||
| 53 | #define instruction_pointer(regs) ((regs)->UCreg_pc) | |
| 5208ba24 | 54 | #define user_stack_pointer(regs) ((regs)->UCreg_sp) |
| 1febf615 | 55 | #define profile_pc(regs) instruction_pointer(regs) |
| 6dea1ba1 | 56 | |
| 6dea1ba1 | 57 | #endif /* __ASSEMBLY__ */ |
| 6dea1ba1 | 58 | #endif |