include/asm/ptrace.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
5  * Copyright (C) 1996-2003 Russell King
58 /* AArch32-specific ptrace requests */
91 #define PSR_AA32_IT_MASK	0x0600fc00	/* If-Then execution state mask */
113  * a syscall -- i.e., its most recent entry into the kernel from
116  * This must have the value -1, for ABI compatibility with ptrace etc.
118 #define NO_SYSCALL (-1)
127 /* Architecturally defined mapping between AArch32 and AArch64 registers */
208 	return regs->syscallno != NO_SYSCALL;  in in_syscall()
213 	regs->syscallno = NO_SYSCALL;  in forget_syscall()
222 	(((regs)->pstate & PSR_AA32_T_BIT))
228 	(((regs)->pstate & PSR_MODE_MASK) == PSR_MODE_EL0t)
231 	(((regs)->pstate & (PSR_MODE32_BIT | PSR_MODE_MASK)) == \
235 	((regs)->pstate & PSR_MODE_MASK)
239 		(regs)->pmr_save == GIC_PRIO_IRQON :			\
243 	(!((regs)->pstate & PSR_I_BIT) && irqs_priority_unmasked(regs))
246 	(!((regs)->pstate & PSR_F_BIT))
251 		return regs->compat_sp;  in user_stack_pointer()
252 	return regs->sp;  in user_stack_pointer()
260  * regs_get_register() - get register value from its offset
277 		val = regs->regs[offset];  in regs_get_register()
280 		val = regs->sp;  in regs_get_register()
283 		val = regs->pc;  in regs_get_register()
286 		val = regs->pstate;  in regs_get_register()
301 	return (r == 31) ? 0 : regs->regs[r];  in pt_regs_read_reg()
312 		regs->regs[r] = val;  in pt_regs_write_reg()
318 	return regs->sp;  in kernel_stack_pointer()
323 	unsigned long val = regs->regs[0];  in regs_return_value()
327 	 * syscall_get_return_value(). Apply the same sign-extension here until  in regs_return_value()
338 	regs->regs[0] = rc;  in regs_set_return_value()
342  * regs_get_kernel_argument() - get Nth function argument in kernel
369 	return regs->pc;  in instruction_pointer()
374 	regs->pc = val;  in instruction_pointer_set()
379 	return regs->regs[29];  in frame_pointer()
382 #define procedure_link_pointer(regs)	((regs)->regs[30])