diff options
Diffstat (limited to 'arch/arm/include/asm/proc-armv/ptrace.h')
-rw-r--r-- | arch/arm/include/asm/proc-armv/ptrace.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/arch/arm/include/asm/proc-armv/ptrace.h b/arch/arm/include/asm/proc-armv/ptrace.h new file mode 100644 index 00000000000..2db60d552d4 --- /dev/null +++ b/arch/arm/include/asm/proc-armv/ptrace.h @@ -0,0 +1,206 @@ +/* + * linux/include/asm-arm/proc-armv/ptrace.h + * + * Copyright (C) 1996-1999 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_PROC_PTRACE_H +#define __ASM_PROC_PTRACE_H + +#ifdef CONFIG_ARM64 + +#define PCMASK 0 + +/* + * PSR bits + */ +#define PSR_MODE_EL0t 0x00000000 +#define PSR_MODE_EL1t 0x00000004 +#define PSR_MODE_EL1h 0x00000005 +#define PSR_MODE_EL2t 0x00000008 +#define PSR_MODE_EL2h 0x00000009 +#define PSR_MODE_EL3t 0x0000000c +#define PSR_MODE_EL3h 0x0000000d +#define PSR_MODE_MASK 0x0000000f + +/* AArch32 CPSR bits */ +#define PSR_MODE32_BIT 0x00000010 + +/* AArch64 SPSR bits */ +#define PSR_F_BIT 0x00000040 +#define PSR_I_BIT 0x00000080 +#define PSR_A_BIT 0x00000100 +#define PSR_D_BIT 0x00000200 +#define PSR_BTYPE_MASK 0x00000c00 +#define PSR_SSBS_BIT 0x00001000 +#define PSR_PAN_BIT 0x00400000 +#define PSR_UAO_BIT 0x00800000 +#define PSR_DIT_BIT 0x01000000 +#define PSR_TCO_BIT 0x02000000 +#define PSR_V_BIT 0x10000000 +#define PSR_C_BIT 0x20000000 +#define PSR_Z_BIT 0x40000000 +#define PSR_N_BIT 0x80000000 + +#define PSR_BTYPE_SHIFT 10 + +/* + * Groups of PSR bits + */ +#define PSR_f 0xff000000 /* Flags */ +#define PSR_s 0x00ff0000 /* Status */ +#define PSR_x 0x0000ff00 /* Extension */ +#define PSR_c 0x000000ff /* Control */ + +/* Convenience names for the values of PSTATE.BTYPE */ +#define PSR_BTYPE_NONE (0b00 << PSR_BTYPE_SHIFT) +#define PSR_BTYPE_JC (0b01 << PSR_BTYPE_SHIFT) +#define PSR_BTYPE_C (0b10 << PSR_BTYPE_SHIFT) +#define PSR_BTYPE_J (0b11 << PSR_BTYPE_SHIFT) + +/* SPSR_ELx bits for exceptions taken from AArch32 */ +#define PSR_AA32_MODE_MASK 0x0000001f +#define PSR_AA32_MODE_USR 0x00000010 +#define PSR_AA32_MODE_FIQ 0x00000011 +#define PSR_AA32_MODE_IRQ 0x00000012 +#define PSR_AA32_MODE_SVC 0x00000013 +#define PSR_AA32_MODE_ABT 0x00000017 +#define PSR_AA32_MODE_HYP 0x0000001a +#define PSR_AA32_MODE_UND 0x0000001b +#define PSR_AA32_MODE_SYS 0x0000001f +#define PSR_AA32_T_BIT 0x00000020 +#define PSR_AA32_F_BIT 0x00000040 +#define PSR_AA32_I_BIT 0x00000080 +#define PSR_AA32_A_BIT 0x00000100 +#define PSR_AA32_E_BIT 0x00000200 +#define PSR_AA32_PAN_BIT 0x00400000 +#define PSR_AA32_SSBS_BIT 0x00800000 +#define PSR_AA32_DIT_BIT 0x01000000 +#define PSR_AA32_Q_BIT 0x08000000 +#define PSR_AA32_V_BIT 0x10000000 +#define PSR_AA32_C_BIT 0x20000000 +#define PSR_AA32_Z_BIT 0x40000000 +#define PSR_AA32_N_BIT 0x80000000 +#define PSR_AA32_IT_MASK 0x0600fc00 /* If-Then execution state mask */ +#define PSR_AA32_GE_MASK 0x000f0000 + +#ifndef __ASSEMBLY__ + +/* + * This struct defines the way the registers are stored + * on the stack during an exception. + */ +struct pt_regs { + unsigned long spsr; + unsigned long elr; + unsigned long esr; + unsigned long regs[31]; +}; + +#endif /* __ASSEMBLY__ */ + +#else /* CONFIG_ARM64 */ + +#define USR26_MODE 0x00 +#define FIQ26_MODE 0x01 +#define IRQ26_MODE 0x02 +#define SVC26_MODE 0x03 +#define USR_MODE 0x10 +#define FIQ_MODE 0x11 +#define IRQ_MODE 0x12 +#define SVC_MODE 0x13 +#define MON_MODE 0x16 +#define ABT_MODE 0x17 +#define HYP_MODE 0x1a +#define UND_MODE 0x1b +#define SYSTEM_MODE 0x1f +#define MODE_MASK 0x1f +#define T_BIT 0x20 +#define F_BIT 0x40 +#define I_BIT 0x80 +#define A_BIT 0x100 +#define CC_V_BIT (1 << 28) +#define CC_C_BIT (1 << 29) +#define CC_Z_BIT (1 << 30) +#define CC_N_BIT (1 << 31) +#define PCMASK 0 + +#ifndef __ASSEMBLY__ + +/* this struct defines the way the registers are stored on the + stack during a system call. */ + +struct pt_regs { + long uregs[18]; +}; + +#define ARM_cpsr uregs[16] +#define ARM_pc uregs[15] +#define ARM_lr uregs[14] +#define ARM_sp uregs[13] +#define ARM_ip uregs[12] +#define ARM_fp uregs[11] +#define ARM_r10 uregs[10] +#define ARM_r9 uregs[9] +#define ARM_r8 uregs[8] +#define ARM_r7 uregs[7] +#define ARM_r6 uregs[6] +#define ARM_r5 uregs[5] +#define ARM_r4 uregs[4] +#define ARM_r3 uregs[3] +#define ARM_r2 uregs[2] +#define ARM_r1 uregs[1] +#define ARM_r0 uregs[0] +#define ARM_ORIG_r0 uregs[17] + +#ifdef __KERNEL__ + +#define user_mode(regs) \ + (((regs)->ARM_cpsr & 0xf) == 0) + +#if CONFIG_IS_ENABLED(SYS_THUMB_BUILD) +#define thumb_mode(regs) \ + (((regs)->ARM_cpsr & T_BIT)) +#else +#define thumb_mode(regs) (0) +#endif + +#define processor_mode(regs) \ + ((regs)->ARM_cpsr & MODE_MASK) + +#define interrupts_enabled(regs) \ + (!((regs)->ARM_cpsr & I_BIT)) + +#define fast_interrupts_enabled(regs) \ + (!((regs)->ARM_cpsr & F_BIT)) + +#define condition_codes(regs) \ + ((regs)->ARM_cpsr & (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT)) + +/* Are the current registers suitable for user mode? + * (used to maintain security in signal handlers) + */ +static inline int valid_user_regs(struct pt_regs *regs) +{ + if ((regs->ARM_cpsr & 0xf) == 0 && + (regs->ARM_cpsr & (F_BIT|I_BIT)) == 0) + return 1; + + /* + * Force CPSR to something logical... + */ + regs->ARM_cpsr &= (CC_V_BIT|CC_C_BIT|CC_Z_BIT|CC_N_BIT|0x10); + + return 0; +} + +#endif /* __KERNEL__ */ + +#endif /* __ASSEMBLY__ */ + +#endif /* CONFIG_ARM64 */ + +#endif |