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39fdf4be72
Implement LoongArch vcpu world switch, including vcpu enter guest and vcpu exit from guest, both operations need to save or restore the host and guest registers. Reviewed-by: Bibo Mao <maobibo@loongson.cn> Tested-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
324 lines
9.7 KiB
C
324 lines
9.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* asm-offsets.c: Calculate pt_regs and task_struct offsets.
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*
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* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
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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 <linux/mm.h>
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#include <linux/kbuild.h>
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#include <linux/suspend.h>
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#include <linux/kvm_host.h>
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#include <asm/cpu-info.h>
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#include <asm/ptrace.h>
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#include <asm/processor.h>
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#include <asm/ftrace.h>
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void output_ptreg_defines(void)
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{
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COMMENT("LoongArch pt_regs offsets.");
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OFFSET(PT_R0, pt_regs, regs[0]);
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OFFSET(PT_R1, pt_regs, regs[1]);
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OFFSET(PT_R2, pt_regs, regs[2]);
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OFFSET(PT_R3, pt_regs, regs[3]);
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OFFSET(PT_R4, pt_regs, regs[4]);
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OFFSET(PT_R5, pt_regs, regs[5]);
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OFFSET(PT_R6, pt_regs, regs[6]);
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OFFSET(PT_R7, pt_regs, regs[7]);
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OFFSET(PT_R8, pt_regs, regs[8]);
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OFFSET(PT_R9, pt_regs, regs[9]);
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OFFSET(PT_R10, pt_regs, regs[10]);
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OFFSET(PT_R11, pt_regs, regs[11]);
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OFFSET(PT_R12, pt_regs, regs[12]);
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OFFSET(PT_R13, pt_regs, regs[13]);
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OFFSET(PT_R14, pt_regs, regs[14]);
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OFFSET(PT_R15, pt_regs, regs[15]);
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OFFSET(PT_R16, pt_regs, regs[16]);
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OFFSET(PT_R17, pt_regs, regs[17]);
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OFFSET(PT_R18, pt_regs, regs[18]);
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OFFSET(PT_R19, pt_regs, regs[19]);
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OFFSET(PT_R20, pt_regs, regs[20]);
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OFFSET(PT_R21, pt_regs, regs[21]);
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OFFSET(PT_R22, pt_regs, regs[22]);
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OFFSET(PT_R23, pt_regs, regs[23]);
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OFFSET(PT_R24, pt_regs, regs[24]);
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OFFSET(PT_R25, pt_regs, regs[25]);
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OFFSET(PT_R26, pt_regs, regs[26]);
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OFFSET(PT_R27, pt_regs, regs[27]);
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OFFSET(PT_R28, pt_regs, regs[28]);
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OFFSET(PT_R29, pt_regs, regs[29]);
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OFFSET(PT_R30, pt_regs, regs[30]);
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OFFSET(PT_R31, pt_regs, regs[31]);
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OFFSET(PT_CRMD, pt_regs, csr_crmd);
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OFFSET(PT_PRMD, pt_regs, csr_prmd);
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OFFSET(PT_EUEN, pt_regs, csr_euen);
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OFFSET(PT_ECFG, pt_regs, csr_ecfg);
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OFFSET(PT_ESTAT, pt_regs, csr_estat);
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OFFSET(PT_ERA, pt_regs, csr_era);
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OFFSET(PT_BVADDR, pt_regs, csr_badvaddr);
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OFFSET(PT_ORIG_A0, pt_regs, orig_a0);
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DEFINE(PT_SIZE, sizeof(struct pt_regs));
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BLANK();
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}
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void output_task_defines(void)
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{
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COMMENT("LoongArch task_struct offsets.");
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OFFSET(TASK_STATE, task_struct, __state);
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OFFSET(TASK_THREAD_INFO, task_struct, stack);
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OFFSET(TASK_FLAGS, task_struct, flags);
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OFFSET(TASK_MM, task_struct, mm);
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OFFSET(TASK_PID, task_struct, pid);
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#if defined(CONFIG_STACKPROTECTOR)
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OFFSET(TASK_STACK_CANARY, task_struct, stack_canary);
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#endif
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DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
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BLANK();
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}
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void output_thread_info_defines(void)
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{
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COMMENT("LoongArch thread_info offsets.");
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OFFSET(TI_TASK, thread_info, task);
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OFFSET(TI_FLAGS, thread_info, flags);
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OFFSET(TI_TP_VALUE, thread_info, tp_value);
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OFFSET(TI_CPU, thread_info, cpu);
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OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
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OFFSET(TI_REGS, thread_info, regs);
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DEFINE(_THREAD_SIZE, THREAD_SIZE);
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DEFINE(_THREAD_MASK, THREAD_MASK);
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DEFINE(_IRQ_STACK_SIZE, IRQ_STACK_SIZE);
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DEFINE(_IRQ_STACK_START, IRQ_STACK_START);
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BLANK();
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}
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void output_thread_defines(void)
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{
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COMMENT("LoongArch specific thread_struct offsets.");
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OFFSET(THREAD_REG01, task_struct, thread.reg01);
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OFFSET(THREAD_REG03, task_struct, thread.reg03);
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OFFSET(THREAD_REG22, task_struct, thread.reg22);
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OFFSET(THREAD_REG23, task_struct, thread.reg23);
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OFFSET(THREAD_REG24, task_struct, thread.reg24);
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OFFSET(THREAD_REG25, task_struct, thread.reg25);
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OFFSET(THREAD_REG26, task_struct, thread.reg26);
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OFFSET(THREAD_REG27, task_struct, thread.reg27);
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OFFSET(THREAD_REG28, task_struct, thread.reg28);
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OFFSET(THREAD_REG29, task_struct, thread.reg29);
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OFFSET(THREAD_REG30, task_struct, thread.reg30);
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OFFSET(THREAD_REG31, task_struct, thread.reg31);
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OFFSET(THREAD_SCHED_RA, task_struct, thread.sched_ra);
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OFFSET(THREAD_SCHED_CFA, task_struct, thread.sched_cfa);
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OFFSET(THREAD_CSRCRMD, task_struct,
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thread.csr_crmd);
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OFFSET(THREAD_CSRPRMD, task_struct,
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thread.csr_prmd);
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OFFSET(THREAD_CSREUEN, task_struct,
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thread.csr_euen);
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OFFSET(THREAD_CSRECFG, task_struct,
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thread.csr_ecfg);
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OFFSET(THREAD_FPU, task_struct, thread.fpu);
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OFFSET(THREAD_BVADDR, task_struct, \
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thread.csr_badvaddr);
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OFFSET(THREAD_ECODE, task_struct, \
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thread.error_code);
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OFFSET(THREAD_TRAPNO, task_struct, thread.trap_nr);
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BLANK();
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}
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void output_thread_fpu_defines(void)
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{
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OFFSET(THREAD_FPR0, loongarch_fpu, fpr[0]);
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OFFSET(THREAD_FPR1, loongarch_fpu, fpr[1]);
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OFFSET(THREAD_FPR2, loongarch_fpu, fpr[2]);
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OFFSET(THREAD_FPR3, loongarch_fpu, fpr[3]);
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OFFSET(THREAD_FPR4, loongarch_fpu, fpr[4]);
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OFFSET(THREAD_FPR5, loongarch_fpu, fpr[5]);
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OFFSET(THREAD_FPR6, loongarch_fpu, fpr[6]);
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OFFSET(THREAD_FPR7, loongarch_fpu, fpr[7]);
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OFFSET(THREAD_FPR8, loongarch_fpu, fpr[8]);
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OFFSET(THREAD_FPR9, loongarch_fpu, fpr[9]);
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OFFSET(THREAD_FPR10, loongarch_fpu, fpr[10]);
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OFFSET(THREAD_FPR11, loongarch_fpu, fpr[11]);
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OFFSET(THREAD_FPR12, loongarch_fpu, fpr[12]);
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OFFSET(THREAD_FPR13, loongarch_fpu, fpr[13]);
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OFFSET(THREAD_FPR14, loongarch_fpu, fpr[14]);
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OFFSET(THREAD_FPR15, loongarch_fpu, fpr[15]);
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OFFSET(THREAD_FPR16, loongarch_fpu, fpr[16]);
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OFFSET(THREAD_FPR17, loongarch_fpu, fpr[17]);
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OFFSET(THREAD_FPR18, loongarch_fpu, fpr[18]);
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OFFSET(THREAD_FPR19, loongarch_fpu, fpr[19]);
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OFFSET(THREAD_FPR20, loongarch_fpu, fpr[20]);
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OFFSET(THREAD_FPR21, loongarch_fpu, fpr[21]);
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OFFSET(THREAD_FPR22, loongarch_fpu, fpr[22]);
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OFFSET(THREAD_FPR23, loongarch_fpu, fpr[23]);
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OFFSET(THREAD_FPR24, loongarch_fpu, fpr[24]);
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OFFSET(THREAD_FPR25, loongarch_fpu, fpr[25]);
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OFFSET(THREAD_FPR26, loongarch_fpu, fpr[26]);
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OFFSET(THREAD_FPR27, loongarch_fpu, fpr[27]);
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OFFSET(THREAD_FPR28, loongarch_fpu, fpr[28]);
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OFFSET(THREAD_FPR29, loongarch_fpu, fpr[29]);
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OFFSET(THREAD_FPR30, loongarch_fpu, fpr[30]);
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OFFSET(THREAD_FPR31, loongarch_fpu, fpr[31]);
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OFFSET(THREAD_FCSR, loongarch_fpu, fcsr);
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OFFSET(THREAD_FCC, loongarch_fpu, fcc);
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OFFSET(THREAD_FTOP, loongarch_fpu, ftop);
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BLANK();
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}
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void output_thread_lbt_defines(void)
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{
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OFFSET(THREAD_SCR0, loongarch_lbt, scr0);
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OFFSET(THREAD_SCR1, loongarch_lbt, scr1);
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OFFSET(THREAD_SCR2, loongarch_lbt, scr2);
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OFFSET(THREAD_SCR3, loongarch_lbt, scr3);
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OFFSET(THREAD_EFLAGS, loongarch_lbt, eflags);
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BLANK();
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}
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void output_mm_defines(void)
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{
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COMMENT("Size of struct page");
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DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
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BLANK();
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COMMENT("Linux mm_struct offsets.");
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OFFSET(MM_USERS, mm_struct, mm_users);
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OFFSET(MM_PGD, mm_struct, pgd);
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OFFSET(MM_CONTEXT, mm_struct, context);
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BLANK();
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DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
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DEFINE(_PMD_T_SIZE, sizeof(pmd_t));
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DEFINE(_PTE_T_SIZE, sizeof(pte_t));
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BLANK();
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DEFINE(_PGD_T_LOG2, PGD_T_LOG2);
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#ifndef __PAGETABLE_PMD_FOLDED
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DEFINE(_PMD_T_LOG2, PMD_T_LOG2);
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#endif
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DEFINE(_PTE_T_LOG2, PTE_T_LOG2);
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BLANK();
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DEFINE(_PMD_SHIFT, PMD_SHIFT);
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DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
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BLANK();
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DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
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DEFINE(_PTRS_PER_PMD, PTRS_PER_PMD);
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DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
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BLANK();
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DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
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DEFINE(_PAGE_SIZE, PAGE_SIZE);
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BLANK();
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}
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void output_sc_defines(void)
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{
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COMMENT("Linux sigcontext offsets.");
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OFFSET(SC_REGS, sigcontext, sc_regs);
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OFFSET(SC_PC, sigcontext, sc_pc);
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BLANK();
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}
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void output_signal_defines(void)
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{
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COMMENT("Linux signal numbers.");
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DEFINE(_SIGHUP, SIGHUP);
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DEFINE(_SIGINT, SIGINT);
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DEFINE(_SIGQUIT, SIGQUIT);
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DEFINE(_SIGILL, SIGILL);
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DEFINE(_SIGTRAP, SIGTRAP);
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DEFINE(_SIGIOT, SIGIOT);
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DEFINE(_SIGABRT, SIGABRT);
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DEFINE(_SIGFPE, SIGFPE);
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DEFINE(_SIGKILL, SIGKILL);
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DEFINE(_SIGBUS, SIGBUS);
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DEFINE(_SIGSEGV, SIGSEGV);
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DEFINE(_SIGSYS, SIGSYS);
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DEFINE(_SIGPIPE, SIGPIPE);
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DEFINE(_SIGALRM, SIGALRM);
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DEFINE(_SIGTERM, SIGTERM);
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DEFINE(_SIGUSR1, SIGUSR1);
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DEFINE(_SIGUSR2, SIGUSR2);
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DEFINE(_SIGCHLD, SIGCHLD);
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DEFINE(_SIGPWR, SIGPWR);
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DEFINE(_SIGWINCH, SIGWINCH);
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DEFINE(_SIGURG, SIGURG);
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DEFINE(_SIGIO, SIGIO);
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DEFINE(_SIGSTOP, SIGSTOP);
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DEFINE(_SIGTSTP, SIGTSTP);
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DEFINE(_SIGCONT, SIGCONT);
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DEFINE(_SIGTTIN, SIGTTIN);
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DEFINE(_SIGTTOU, SIGTTOU);
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DEFINE(_SIGVTALRM, SIGVTALRM);
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DEFINE(_SIGPROF, SIGPROF);
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DEFINE(_SIGXCPU, SIGXCPU);
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DEFINE(_SIGXFSZ, SIGXFSZ);
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BLANK();
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}
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#ifdef CONFIG_SMP
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void output_smpboot_defines(void)
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{
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COMMENT("Linux smp cpu boot offsets.");
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OFFSET(CPU_BOOT_STACK, secondary_data, stack);
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OFFSET(CPU_BOOT_TINFO, secondary_data, thread_info);
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BLANK();
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}
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#endif
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#ifdef CONFIG_HIBERNATION
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void output_pbe_defines(void)
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{
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COMMENT("Linux struct pbe offsets.");
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OFFSET(PBE_ADDRESS, pbe, address);
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OFFSET(PBE_ORIG_ADDRESS, pbe, orig_address);
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OFFSET(PBE_NEXT, pbe, next);
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DEFINE(PBE_SIZE, sizeof(struct pbe));
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BLANK();
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}
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#endif
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#ifdef CONFIG_FUNCTION_GRAPH_TRACER
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void output_fgraph_ret_regs_defines(void)
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{
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COMMENT("LoongArch fgraph_ret_regs offsets.");
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OFFSET(FGRET_REGS_A0, fgraph_ret_regs, regs[0]);
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OFFSET(FGRET_REGS_A1, fgraph_ret_regs, regs[1]);
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OFFSET(FGRET_REGS_FP, fgraph_ret_regs, fp);
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DEFINE(FGRET_REGS_SIZE, sizeof(struct fgraph_ret_regs));
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BLANK();
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}
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#endif
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void output_kvm_defines(void)
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{
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COMMENT("KVM/LoongArch Specific offsets.");
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OFFSET(VCPU_FCC, kvm_vcpu_arch, fpu.fcc);
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OFFSET(VCPU_FCSR0, kvm_vcpu_arch, fpu.fcsr);
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BLANK();
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OFFSET(KVM_VCPU_ARCH, kvm_vcpu, arch);
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OFFSET(KVM_VCPU_KVM, kvm_vcpu, kvm);
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OFFSET(KVM_VCPU_RUN, kvm_vcpu, run);
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BLANK();
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OFFSET(KVM_ARCH_HSP, kvm_vcpu_arch, host_sp);
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OFFSET(KVM_ARCH_HTP, kvm_vcpu_arch, host_tp);
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OFFSET(KVM_ARCH_HPGD, kvm_vcpu_arch, host_pgd);
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OFFSET(KVM_ARCH_HANDLE_EXIT, kvm_vcpu_arch, handle_exit);
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OFFSET(KVM_ARCH_HEENTRY, kvm_vcpu_arch, host_eentry);
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OFFSET(KVM_ARCH_GEENTRY, kvm_vcpu_arch, guest_eentry);
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OFFSET(KVM_ARCH_GPC, kvm_vcpu_arch, pc);
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OFFSET(KVM_ARCH_GGPR, kvm_vcpu_arch, gprs);
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OFFSET(KVM_ARCH_HBADI, kvm_vcpu_arch, badi);
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OFFSET(KVM_ARCH_HBADV, kvm_vcpu_arch, badv);
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OFFSET(KVM_ARCH_HECFG, kvm_vcpu_arch, host_ecfg);
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OFFSET(KVM_ARCH_HESTAT, kvm_vcpu_arch, host_estat);
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OFFSET(KVM_ARCH_HPERCPU, kvm_vcpu_arch, host_percpu);
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OFFSET(KVM_GPGD, kvm, arch.pgd);
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BLANK();
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}
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