diff options
Diffstat (limited to 'kernel/arch/arm64/include/asm/ptrace.h')
| -rw-r--r-- | kernel/arch/arm64/include/asm/ptrace.h | 35 |
1 files changed, 6 insertions, 29 deletions
diff --git a/kernel/arch/arm64/include/asm/ptrace.h b/kernel/arch/arm64/include/asm/ptrace.h index e9e5467e0..7f9475508 100644 --- a/kernel/arch/arm64/include/asm/ptrace.h +++ b/kernel/arch/arm64/include/asm/ptrace.h @@ -58,6 +58,7 @@ #define COMPAT_PSR_Z_BIT 0x40000000 #define COMPAT_PSR_N_BIT 0x80000000 #define COMPAT_PSR_IT_MASK 0x0600fc00 /* If-Then execution state mask */ +#define COMPAT_PSR_GE_MASK 0x000f0000 #ifdef CONFIG_CPU_BIG_ENDIAN #define COMPAT_PSR_ENDSTATE COMPAT_PSR_E_BIT @@ -116,6 +117,8 @@ struct pt_regs { }; u64 orig_x0; u64 syscallno; + u64 orig_addr_limit; + u64 unused; // maintain 16 byte alignment }; #define arch_has_single_step() (1) @@ -151,35 +154,9 @@ static inline unsigned long regs_return_value(struct pt_regs *regs) return regs->regs[0]; } -/* - * Are the current registers suitable for user mode? (used to maintain - * security in signal handlers) - */ -static inline int valid_user_regs(struct user_pt_regs *regs) -{ - if (user_mode(regs) && (regs->pstate & PSR_I_BIT) == 0) { - regs->pstate &= ~(PSR_F_BIT | PSR_A_BIT); - - /* The T bit is reserved for AArch64 */ - if (!(regs->pstate & PSR_MODE32_BIT)) - regs->pstate &= ~COMPAT_PSR_T_BIT; - - return 1; - } - - /* - * Force PSR to something logical... - */ - regs->pstate &= PSR_f | PSR_s | (PSR_x & ~PSR_A_BIT) | \ - COMPAT_PSR_T_BIT | PSR_MODE32_BIT; - - if (!(regs->pstate & PSR_MODE32_BIT)) { - regs->pstate &= ~COMPAT_PSR_T_BIT; - regs->pstate |= PSR_MODE_EL0t; - } - - return 0; -} +/* We must avoid circular header include via sched.h */ +struct task_struct; +int valid_user_regs(struct user_pt_regs *regs, struct task_struct *task); #define instruction_pointer(regs) ((unsigned long)(regs)->pc) |