drlvm/modules/vm/src/main/native/port/unix/x86_64/thread.c

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */


#define  _GNU_SOURCE
#include <sys/ucontext.h>
#include "port_thread.h"

#if defined(FREEBSD)

void port_thread_context_to_regs(Registers* regs, ucontext_t *uc)
{
    regs->rax = uc->uc_mcontext.mc_rax;
    regs->rcx = uc->uc_mcontext.mc_rcx;
    regs->rdx = uc->uc_mcontext.mc_rdx;
    regs->rdi = uc->uc_mcontext.mc_rdi;
    regs->rsi = uc->uc_mcontext.mc_rsi;
    regs->rbx = uc->uc_mcontext.mc_rbx;
    regs->rbp = uc->uc_mcontext.mc_rbp;
    regs->rip = uc->uc_mcontext.mc_rip;
    regs->rsp = uc->uc_mcontext.mc_rsp;
    regs->r8  = uc->uc_mcontext.mc_r8;
    regs->r9  = uc->uc_mcontext.mc_r9;
    regs->r10 = uc->uc_mcontext.mc_r10;
    regs->r11 = uc->uc_mcontext.mc_r11;
    regs->r12 = uc->uc_mcontext.mc_r12;
    regs->r13 = uc->uc_mcontext.mc_r13;
    regs->r14 = uc->uc_mcontext.mc_r14;
    regs->r15 = uc->uc_mcontext.mc_r15;
    regs->eflags = uc->uc_mcontext.mc_flags;
}

void port_thread_regs_to_context(ucontext_t *uc, Registers* regs)
{
    uc->uc_mcontext.mc_rax = regs->rax;
    uc->uc_mcontext.mc_rcx = regs->rcx;
    uc->uc_mcontext.mc_rdx = regs->rdx;
    uc->uc_mcontext.mc_rdi = regs->rdi;
    uc->uc_mcontext.mc_rsi = regs->rsi;
    uc->uc_mcontext.mc_rbx = regs->rbx;
    uc->uc_mcontext.mc_rbp = regs->rbp;
    uc->uc_mcontext.mc_rip = regs->rip;
    uc->uc_mcontext.mc_rsp = regs->rsp;
    uc->uc_mcontext.mc_r8  = regs->r8;
    uc->uc_mcontext.mc_r9  = regs->r9;
    uc->uc_mcontext.mc_r10 = regs->r10;
    uc->uc_mcontext.mc_r11 = regs->r11;
    uc->uc_mcontext.mc_r12 = regs->r12;
    uc->uc_mcontext.mc_r13 = regs->r13;
    uc->uc_mcontext.mc_r14 = regs->r14;
    uc->uc_mcontext.mc_r15 = regs->r15;
    uc->uc_mcontext.mc_flags = regs->eflags;
}

#else

void port_thread_context_to_regs(Registers* regs, ucontext_t *uc)
{
    regs->rax = uc->uc_mcontext.gregs[REG_RAX];
    regs->rcx = uc->uc_mcontext.gregs[REG_RCX];
    regs->rdx = uc->uc_mcontext.gregs[REG_RDX];
    regs->rdi = uc->uc_mcontext.gregs[REG_RDI];
    regs->rsi = uc->uc_mcontext.gregs[REG_RSI];
    regs->rbx = uc->uc_mcontext.gregs[REG_RBX];
    regs->rbp = uc->uc_mcontext.gregs[REG_RBP];
    regs->rip = uc->uc_mcontext.gregs[REG_RIP];
    regs->rsp = uc->uc_mcontext.gregs[REG_RSP];
    regs->r8  = uc->uc_mcontext.gregs[REG_R8];
    regs->r9  = uc->uc_mcontext.gregs[REG_R9];
    regs->r10 = uc->uc_mcontext.gregs[REG_R10];
    regs->r11 = uc->uc_mcontext.gregs[REG_R11];
    regs->r12 = uc->uc_mcontext.gregs[REG_R12];
    regs->r13 = uc->uc_mcontext.gregs[REG_R13];
    regs->r14 = uc->uc_mcontext.gregs[REG_R14];
    regs->r15 = uc->uc_mcontext.gregs[REG_R15];
    regs->eflags = uc->uc_mcontext.gregs[REG_EFL];
}

void port_thread_regs_to_context(ucontext_t *uc, Registers* regs)
{
    uc->uc_mcontext.gregs[REG_RAX] = regs->rax;
    uc->uc_mcontext.gregs[REG_RCX] = regs->rcx;
    uc->uc_mcontext.gregs[REG_RDX] = regs->rdx;
    uc->uc_mcontext.gregs[REG_RDI] = regs->rdi;
    uc->uc_mcontext.gregs[REG_RSI] = regs->rsi;
    uc->uc_mcontext.gregs[REG_RBX] = regs->rbx;
    uc->uc_mcontext.gregs[REG_RBP] = regs->rbp;
    uc->uc_mcontext.gregs[REG_RIP] = regs->rip;
    uc->uc_mcontext.gregs[REG_RSP] = regs->rsp;
    uc->uc_mcontext.gregs[REG_R8]  = regs->r8;
    uc->uc_mcontext.gregs[REG_R9]  = regs->r9;
    uc->uc_mcontext.gregs[REG_R10] = regs->r10;
    uc->uc_mcontext.gregs[REG_R11] = regs->r11;
    uc->uc_mcontext.gregs[REG_R12] = regs->r12;
    uc->uc_mcontext.gregs[REG_R13] = regs->r13;
    uc->uc_mcontext.gregs[REG_R14] = regs->r14;
    uc->uc_mcontext.gregs[REG_R15] = regs->r15;
    uc->uc_mcontext.gregs[REG_EFL] = regs->eflags;
}
#endif