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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/riscv/include/asm/compat.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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#ifndef __ASM_COMPAT_H

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#define __ASM_COMPAT_H

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#define COMPAT_UTS_MACHINE	"riscv\0\0"

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/*

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 * Architecture specific compatibility types

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 */

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#include <linux/types.h>

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#include <linux/sched.h>

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#include <asm-generic/compat.h>

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static inline int is_compat_task(void)

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{

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	if (!IS_ENABLED(CONFIG_COMPAT))

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		return 0;

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	return test_thread_flag(TIF_32BIT);

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}

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static inline int is_compat_thread(struct thread_info *thread)

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{

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	if (!IS_ENABLED(CONFIG_COMPAT))

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		return 0;

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	return test_ti_thread_flag(thread, TIF_32BIT);

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}

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static inline void set_compat_task(bool is_compat)

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{

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	if (is_compat)

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		set_thread_flag(TIF_32BIT);

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	else

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		clear_thread_flag(TIF_32BIT);

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}

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struct compat_user_regs_struct {

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	compat_ulong_t pc;

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	compat_ulong_t ra;

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	compat_ulong_t sp;

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	compat_ulong_t gp;

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	compat_ulong_t tp;

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	compat_ulong_t t0;

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	compat_ulong_t t1;

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	compat_ulong_t t2;

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	compat_ulong_t s0;

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	compat_ulong_t s1;

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	compat_ulong_t a0;

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	compat_ulong_t a1;

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	compat_ulong_t a2;

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	compat_ulong_t a3;

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	compat_ulong_t a4;

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	compat_ulong_t a5;

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	compat_ulong_t a6;

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	compat_ulong_t a7;

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	compat_ulong_t s2;

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	compat_ulong_t s3;

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	compat_ulong_t s4;

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	compat_ulong_t s5;

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	compat_ulong_t s6;

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	compat_ulong_t s7;

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	compat_ulong_t s8;

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	compat_ulong_t s9;

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	compat_ulong_t s10;

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	compat_ulong_t s11;

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	compat_ulong_t t3;

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	compat_ulong_t t4;

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	compat_ulong_t t5;

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	compat_ulong_t t6;

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};

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static inline void regs_to_cregs(struct compat_user_regs_struct *cregs,

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				 struct pt_regs *regs)

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{

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	cregs->pc	= (compat_ulong_t) regs->epc;

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	cregs->ra	= (compat_ulong_t) regs->ra;

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	cregs->sp	= (compat_ulong_t) regs->sp;

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	cregs->gp	= (compat_ulong_t) regs->gp;

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	cregs->tp	= (compat_ulong_t) regs->tp;

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	cregs->t0	= (compat_ulong_t) regs->t0;

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	cregs->t1	= (compat_ulong_t) regs->t1;

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	cregs->t2	= (compat_ulong_t) regs->t2;

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	cregs->s0	= (compat_ulong_t) regs->s0;

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	cregs->s1	= (compat_ulong_t) regs->s1;

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	cregs->a0	= (compat_ulong_t) regs->a0;

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	cregs->a1	= (compat_ulong_t) regs->a1;

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	cregs->a2	= (compat_ulong_t) regs->a2;

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	cregs->a3	= (compat_ulong_t) regs->a3;

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	cregs->a4	= (compat_ulong_t) regs->a4;

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	cregs->a5	= (compat_ulong_t) regs->a5;

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	cregs->a6	= (compat_ulong_t) regs->a6;

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	cregs->a7	= (compat_ulong_t) regs->a7;

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	cregs->s2	= (compat_ulong_t) regs->s2;

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	cregs->s3	= (compat_ulong_t) regs->s3;

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	cregs->s4	= (compat_ulong_t) regs->s4;

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	cregs->s5	= (compat_ulong_t) regs->s5;

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	cregs->s6	= (compat_ulong_t) regs->s6;

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	cregs->s7	= (compat_ulong_t) regs->s7;

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	cregs->s8	= (compat_ulong_t) regs->s8;

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	cregs->s9	= (compat_ulong_t) regs->s9;

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	cregs->s10	= (compat_ulong_t) regs->s10;

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	cregs->s11	= (compat_ulong_t) regs->s11;

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	cregs->t3	= (compat_ulong_t) regs->t3;

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	cregs->t4	= (compat_ulong_t) regs->t4;

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	cregs->t5	= (compat_ulong_t) regs->t5;

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	cregs->t6	= (compat_ulong_t) regs->t6;

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};

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static inline void cregs_to_regs(struct compat_user_regs_struct *cregs,

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				 struct pt_regs *regs)

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{

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	regs->epc	= (unsigned long) cregs->pc;

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	regs->ra	= (unsigned long) cregs->ra;

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	regs->sp	= (unsigned long) cregs->sp;

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	regs->gp	= (unsigned long) cregs->gp;

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	regs->tp	= (unsigned long) cregs->tp;

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	regs->t0	= (unsigned long) cregs->t0;

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	regs->t1	= (unsigned long) cregs->t1;

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	regs->t2	= (unsigned long) cregs->t2;

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	regs->s0	= (unsigned long) cregs->s0;

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	regs->s1	= (unsigned long) cregs->s1;

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	regs->a0	= (unsigned long) cregs->a0;

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	regs->a1	= (unsigned long) cregs->a1;

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	regs->a2	= (unsigned long) cregs->a2;

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	regs->a3	= (unsigned long) cregs->a3;

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	regs->a4	= (unsigned long) cregs->a4;

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	regs->a5	= (unsigned long) cregs->a5;

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	regs->a6	= (unsigned long) cregs->a6;

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	regs->a7	= (unsigned long) cregs->a7;

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	regs->s2	= (unsigned long) cregs->s2;

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	regs->s3	= (unsigned long) cregs->s3;

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	regs->s4	= (unsigned long) cregs->s4;

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	regs->s5	= (unsigned long) cregs->s5;

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	regs->s6	= (unsigned long) cregs->s6;

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	regs->s7	= (unsigned long) cregs->s7;

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	regs->s8	= (unsigned long) cregs->s8;

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	regs->s9	= (unsigned long) cregs->s9;

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	regs->s10	= (unsigned long) cregs->s10;

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	regs->s11	= (unsigned long) cregs->s11;

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	regs->t3	= (unsigned long) cregs->t3;

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	regs->t4	= (unsigned long) cregs->t4;

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	regs->t5	= (unsigned long) cregs->t5;

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	regs->t6	= (unsigned long) cregs->t6;

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};

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#endif /* __ASM_COMPAT_H */

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