/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2023 StarFive Technology Co., Ltd. * * Author: Jee Heng Sia <jeeheng.sia@starfivetech.com> */ #ifndef __ASSEMBLER__#error "Only include this from assembly code"#endif #ifndef __ASM_ASSEMBLER_H#define __ASM_ASSEMBLER_H #include <asm/asm.h>#include <asm/asm-offsets.h>#include <asm/csr.h> /* * suspend_restore_csrs - restore CSRs */	.macro suspend_restore_csrs		REG_L	t0, (SUSPEND_CONTEXT_REGS + PT_EPC)(a0)		csrw	CSR_EPC, t0		REG_L	t0, (SUSPEND_CONTEXT_REGS + PT_STATUS)(a0)		csrw	CSR_STATUS, t0		REG_L	t0, (SUSPEND_CONTEXT_REGS + PT_BADADDR)(a0)		csrw	CSR_TVAL, t0		REG_L	t0, (SUSPEND_CONTEXT_REGS + PT_CAUSE)(a0)		csrw	CSR_CAUSE, t0	.endm /* * suspend_restore_regs - Restore registers (except A0 and T0-T6) */	.macro suspend_restore_regs		REG_L	ra, (SUSPEND_CONTEXT_REGS + PT_RA)(a0)		REG_L	sp, (SUSPEND_CONTEXT_REGS + PT_SP)(a0)		REG_L	gp, (SUSPEND_CONTEXT_REGS + PT_GP)(a0)		REG_L	tp, (SUSPEND_CONTEXT_REGS + PT_TP)(a0)		REG_L	s0, (SUSPEND_CONTEXT_REGS + PT_S0)(a0)		REG_L	s1, (SUSPEND_CONTEXT_REGS + PT_S1)(a0)		REG_L	a1, (SUSPEND_CONTEXT_REGS + PT_A1)(a0)		REG_L	a2, (SUSPEND_CONTEXT_REGS + PT_A2)(a0)		REG_L	a3, (SUSPEND_CONTEXT_REGS + PT_A3)(a0)		REG_L	a4, (SUSPEND_CONTEXT_REGS + PT_A4)(a0)		REG_L	a5, (SUSPEND_CONTEXT_REGS + PT_A5)(a0)		REG_L	a6, (SUSPEND_CONTEXT_REGS + PT_A6)(a0)		REG_L	a7, (SUSPEND_CONTEXT_REGS + PT_A7)(a0)		REG_L	s2, (SUSPEND_CONTEXT_REGS + PT_S2)(a0)		REG_L	s3, (SUSPEND_CONTEXT_REGS + PT_S3)(a0)		REG_L	s4, (SUSPEND_CONTEXT_REGS + PT_S4)(a0)		REG_L	s5, (SUSPEND_CONTEXT_REGS + PT_S5)(a0)		REG_L	s6, (SUSPEND_CONTEXT_REGS + PT_S6)(a0)		REG_L	s7, (SUSPEND_CONTEXT_REGS + PT_S7)(a0)		REG_L	s8, (SUSPEND_CONTEXT_REGS + PT_S8)(a0)		REG_L	s9, (SUSPEND_CONTEXT_REGS + PT_S9)(a0)		REG_L	s10, (SUSPEND_CONTEXT_REGS + PT_S10)(a0)		REG_L	s11, (SUSPEND_CONTEXT_REGS + PT_S11)(a0)	.endm /* * copy_page - copy 1 page (4KB) of data from source to destination * @a0 - destination * @a1 - source */	.macro	copy_page a0, a1		lui	a2, 0x1		add	a2, a2, a01 :		REG_L	t0, 0(a1)		REG_L	t1, SZREG(a1) 		REG_S	t0, 0(a0)		REG_S	t1, SZREG(a0) 		addi	a0, a0, 2 * SZREG		addi	a1, a1, 2 * SZREG		bne	a2, a0, 1b	.endm #endif	/* __ASM_ASSEMBLER_H */ #if defined(VDSO_CFI) && (__riscv_xlen == 64).macro vdso_lpad, label = 0lpad \label.endm#else.macro vdso_lpad, label = 0.endm#endif /* * This macro emits a program property note section identifying * architecture features which require special handling, mainly for * use in assembly files included in the VDSO. */#define NT_GNU_PROPERTY_TYPE_0  5#define GNU_PROPERTY_RISCV_FEATURE_1_AND 0xc0000000 #define GNU_PROPERTY_RISCV_FEATURE_1_ZICFILP		BIT(0)#define GNU_PROPERTY_RISCV_FEATURE_1_ZICFISS		BIT(1) #if defined(VDSO_CFI) && (__riscv_xlen == 64)#define GNU_PROPERTY_RISCV_FEATURE_1_DEFAULT \	(GNU_PROPERTY_RISCV_FEATURE_1_ZICFILP | GNU_PROPERTY_RISCV_FEATURE_1_ZICFISS)#endif #ifdef GNU_PROPERTY_RISCV_FEATURE_1_DEFAULT.macro emit_riscv_feature_1_and, feat = GNU_PROPERTY_RISCV_FEATURE_1_DEFAULT	.pushsection .note.gnu.property, "a"	.p2align        3	.word           4	.word           16	.word           NT_GNU_PROPERTY_TYPE_0	.asciz          "GNU"	.word           GNU_PROPERTY_RISCV_FEATURE_1_AND	.word           4	.word           \feat	.word           0	.popsection.endm#else.macro emit_riscv_feature_1_and, feat = 0.endm#endif