diff options
Diffstat (limited to 'arch/mips/include/asm/ptrace.h')
| -rw-r--r-- | arch/mips/include/asm/ptrace.h | 99 |
1 files changed, 59 insertions, 40 deletions
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h index 5659c0c873..da051f6e10 100644 --- a/arch/mips/include/asm/ptrace.h +++ b/arch/mips/include/asm/ptrace.h @@ -1,35 +1,27 @@ /* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * + * SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_PTRACE_H #define _ASM_PTRACE_H -/* 0 - 31 are integer registers, 32 - 63 are fp registers. */ -#define FPR_BASE 32 -#define PC 64 -#define CAUSE 65 -#define BADVADDR 66 -#define MMHI 67 -#define MMLO 68 -#define FPC_CSR 69 -#define FPC_EIR 70 -#define DSP_BASE 71 /* 3 more hi / lo register pairs */ -#define DSP_CONTROL 77 -#define ACX 78 +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm/isadep.h> /* * This struct defines the way the registers are stored on the stack during a * system call/exception. As usual the registers k0/k1 aren't being saved. + * + * If you add a register here, also add it to regoffset_table[] in + * arch/mips/kernel/ptrace.c. */ struct pt_regs { #ifdef CONFIG_32BIT /* Pad bytes for argument save space on the stack. */ - unsigned long pad0[6]; + unsigned long pad0[8]; #endif /* Saved main processor registers. */ @@ -45,34 +37,50 @@ struct pt_regs { unsigned long cp0_badvaddr; unsigned long cp0_cause; unsigned long cp0_epc; -#ifdef CONFIG_MIPS_MT_SMTC - unsigned long cp0_tcstatus; -#endif /* CONFIG_MIPS_MT_SMTC */ -} __attribute__ ((aligned (8))); +#ifdef CONFIG_CPU_CAVIUM_OCTEON + unsigned long long mpl[6]; /* MTM{0-5} */ + unsigned long long mtp[6]; /* MTP{0-5} */ +#endif + unsigned long __last[0]; +} __aligned(8); -/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ -#define PTRACE_GETREGS 12 -#define PTRACE_SETREGS 13 -#define PTRACE_GETFPREGS 14 -#define PTRACE_SETFPREGS 15 -/* #define PTRACE_GETFPXREGS 18 */ -/* #define PTRACE_SETFPXREGS 19 */ +static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) +{ + return regs->regs[31]; +} -#define PTRACE_OLDSETOPTIONS 21 +/* + * Don't use asm-generic/ptrace.h it defines FP accessors that don't make + * sense on MIPS. We rather want an error if they get invoked. + */ -#define PTRACE_GET_THREAD_AREA 25 -#define PTRACE_SET_THREAD_AREA 26 +static inline void instruction_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + regs->cp0_epc = val; +} -/* Calls to trace a 64bit program from a 32bit program. */ -#define PTRACE_PEEKTEXT_3264 0xc0 -#define PTRACE_PEEKDATA_3264 0xc1 -#define PTRACE_POKETEXT_3264 0xc2 -#define PTRACE_POKEDATA_3264 0xc3 -#define PTRACE_GET_THREAD_AREA_3264 0xc4 +/* Query offset/name of register from its name/offset */ +extern int regs_query_register_offset(const char *name); +#define MAX_REG_OFFSET (offsetof(struct pt_regs, __last)) -#ifdef __KERNEL__ +/** + * regs_get_register() - get register value from its offset + * @regs: pt_regs from which register value is gotten. + * @offset: offset number of the register. + * + * regs_get_register returns the value of a register. The @offset is the + * offset of the register in struct pt_regs address which specified by @regs. + * If @offset is bigger than MAX_REG_OFFSET, this returns 0. + */ +static inline unsigned long regs_get_register(struct pt_regs *regs, + unsigned int offset) +{ + if (unlikely(offset > MAX_REG_OFFSET)) + return 0; -#include <asm/isadep.h> + return *(unsigned long *)((unsigned long)regs + offset); +} /* * Does the process account for user or for system time? @@ -82,6 +90,17 @@ struct pt_regs { #define instruction_pointer(regs) ((regs)->cp0_epc) #define profile_pc(regs) instruction_pointer(regs) -#endif +/* Helpers for working with the user stack pointer */ + +static inline unsigned long user_stack_pointer(struct pt_regs *regs) +{ + return regs->regs[29]; +} + +static inline void user_stack_pointer_set(struct pt_regs *regs, + unsigned long val) +{ + regs->regs[29] = val; +} #endif /* _ASM_PTRACE_H */ |