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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127/* 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