i386: hvf: fix licensing issues; isolate task handling code (GPL v2-only)
This patch replaces the license header for those files that were either GPL v2-or-v3, or GPL v2-only; the replacing license is GPL v2-or-later. The code for task switching/handling, which is derived from KVM and hence is GPL v2-only, is isolated in the new files (with this license) x86_task.c/.h, and the corresponding compilation rule is added to target/i386/hvf-utils/Makefile.objs. Signed-off-by: Sergio Andres Gomez Del Real <Sergio.G.DelReal@gmail.com> Message-Id: <20170913090522.4022-4-Sergio.G.DelReal@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sergio Andres Gomez Del Real
Paolo Bonzini
parent
c97d6d2cdf
commit
996feed462
@ -31,6 +31,7 @@
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#include "hvf-utils/x86_mmu.h"
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#include "hvf-utils/x86_decode.h"
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#include "hvf-utils/x86_emu.h"
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#include "hvf-utils/x86_task.h"
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#include "hvf-utils/x86hvf.h"
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#include <Hypervisor/hv.h>
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@ -224,160 +225,6 @@ void update_apic_tpr(CPUState *cpu)
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#define VECTORING_INFO_VECTOR_MASK 0xff
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// TODO: taskswitch handling
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static void save_state_to_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)
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{
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/* CR3 and ldt selector are not saved intentionally */
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tss->eip = EIP(cpu);
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tss->eflags = EFLAGS(cpu);
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tss->eax = EAX(cpu);
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tss->ecx = ECX(cpu);
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tss->edx = EDX(cpu);
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tss->ebx = EBX(cpu);
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tss->esp = ESP(cpu);
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tss->ebp = EBP(cpu);
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tss->esi = ESI(cpu);
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tss->edi = EDI(cpu);
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tss->es = vmx_read_segment_selector(cpu, REG_SEG_ES).sel;
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tss->cs = vmx_read_segment_selector(cpu, REG_SEG_CS).sel;
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tss->ss = vmx_read_segment_selector(cpu, REG_SEG_SS).sel;
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tss->ds = vmx_read_segment_selector(cpu, REG_SEG_DS).sel;
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tss->fs = vmx_read_segment_selector(cpu, REG_SEG_FS).sel;
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tss->gs = vmx_read_segment_selector(cpu, REG_SEG_GS).sel;
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}
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static void load_state_from_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)
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{
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wvmcs(cpu->hvf_fd, VMCS_GUEST_CR3, tss->cr3);
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RIP(cpu) = tss->eip;
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EFLAGS(cpu) = tss->eflags | 2;
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/* General purpose registers */
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RAX(cpu) = tss->eax;
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RCX(cpu) = tss->ecx;
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RDX(cpu) = tss->edx;
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RBX(cpu) = tss->ebx;
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RSP(cpu) = tss->esp;
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RBP(cpu) = tss->ebp;
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RSI(cpu) = tss->esi;
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RDI(cpu) = tss->edi;
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ldt}}, REG_SEG_LDTR);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->es}}, REG_SEG_ES);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->cs}}, REG_SEG_CS);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ss}}, REG_SEG_SS);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ds}}, REG_SEG_DS);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->fs}}, REG_SEG_FS);
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vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->gs}}, REG_SEG_GS);
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#if 0
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load_segment(cpu, REG_SEG_LDTR, tss->ldt);
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load_segment(cpu, REG_SEG_ES, tss->es);
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load_segment(cpu, REG_SEG_CS, tss->cs);
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load_segment(cpu, REG_SEG_SS, tss->ss);
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load_segment(cpu, REG_SEG_DS, tss->ds);
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load_segment(cpu, REG_SEG_FS, tss->fs);
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load_segment(cpu, REG_SEG_GS, tss->gs);
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#endif
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}
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static int task_switch_32(CPUState *cpu, x68_segment_selector tss_sel, x68_segment_selector old_tss_sel,
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uint64_t old_tss_base, struct x86_segment_descriptor *new_desc)
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{
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struct x86_tss_segment32 tss_seg;
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uint32_t new_tss_base = x86_segment_base(new_desc);
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uint32_t eip_offset = offsetof(struct x86_tss_segment32, eip);
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uint32_t ldt_sel_offset = offsetof(struct x86_tss_segment32, ldt);
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vmx_read_mem(cpu, &tss_seg, old_tss_base, sizeof(tss_seg));
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save_state_to_tss32(cpu, &tss_seg);
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vmx_write_mem(cpu, old_tss_base + eip_offset, &tss_seg.eip, ldt_sel_offset - eip_offset);
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vmx_read_mem(cpu, &tss_seg, new_tss_base, sizeof(tss_seg));
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if (old_tss_sel.sel != 0xffff) {
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tss_seg.prev_tss = old_tss_sel.sel;
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vmx_write_mem(cpu, new_tss_base, &tss_seg.prev_tss, sizeof(tss_seg.prev_tss));
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}
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load_state_from_tss32(cpu, &tss_seg);
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return 0;
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}
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static void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int reason, bool gate_valid, uint8_t gate, uint64_t gate_type)
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{
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uint64_t rip = rreg(cpu->hvf_fd, HV_X86_RIP);
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if (!gate_valid || (gate_type != VMCS_INTR_T_HWEXCEPTION &&
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gate_type != VMCS_INTR_T_HWINTR &&
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gate_type != VMCS_INTR_T_NMI)) {
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int ins_len = rvmcs(cpu->hvf_fd, VMCS_EXIT_INSTRUCTION_LENGTH);
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macvm_set_rip(cpu, rip + ins_len);
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return;
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}
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load_regs(cpu);
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struct x86_segment_descriptor curr_tss_desc, next_tss_desc;
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int ret;
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x68_segment_selector old_tss_sel = vmx_read_segment_selector(cpu, REG_SEG_TR);
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uint64_t old_tss_base = vmx_read_segment_base(cpu, REG_SEG_TR);
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uint32_t desc_limit;
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struct x86_call_gate task_gate_desc;
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struct vmx_segment vmx_seg;
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x86_read_segment_descriptor(cpu, &next_tss_desc, tss_sel);
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x86_read_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);
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if (reason == TSR_IDT_GATE && gate_valid) {
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int dpl;
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ret = x86_read_call_gate(cpu, &task_gate_desc, gate);
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dpl = task_gate_desc.dpl;
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x68_segment_selector cs = vmx_read_segment_selector(cpu, REG_SEG_CS);
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if (tss_sel.rpl > dpl || cs.rpl > dpl)
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;//DPRINTF("emulate_gp");
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}
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desc_limit = x86_segment_limit(&next_tss_desc);
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if (!next_tss_desc.p || ((desc_limit < 0x67 && (next_tss_desc.type & 8)) || desc_limit < 0x2b)) {
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VM_PANIC("emulate_ts");
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}
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if (reason == TSR_IRET || reason == TSR_JMP) {
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curr_tss_desc.type &= ~(1 << 1); /* clear busy flag */
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x86_write_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);
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}
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if (reason == TSR_IRET)
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EFLAGS(cpu) &= ~RFLAGS_NT;
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if (reason != TSR_CALL && reason != TSR_IDT_GATE)
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old_tss_sel.sel = 0xffff;
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if (reason != TSR_IRET) {
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next_tss_desc.type |= (1 << 1); /* set busy flag */
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x86_write_segment_descriptor(cpu, &next_tss_desc, tss_sel);
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}
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if (next_tss_desc.type & 8)
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ret = task_switch_32(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);
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else
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//ret = task_switch_16(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);
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VM_PANIC("task_switch_16");
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macvm_set_cr0(cpu->hvf_fd, rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0) | CR0_TS);
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x86_segment_descriptor_to_vmx(cpu, tss_sel, &next_tss_desc, &vmx_seg);
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vmx_write_segment_descriptor(cpu, &vmx_seg, REG_SEG_TR);
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store_regs(cpu);
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hv_vcpu_invalidate_tlb(cpu->hvf_fd);
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hv_vcpu_flush(cpu->hvf_fd);
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}
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static void hvf_handle_interrupt(CPUState * cpu, int mask)
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{
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cpu->interrupt_request |= mask;
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@ -1 +1 @@
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obj-y += x86.o x86_cpuid.o x86_decode.o x86_descr.o x86_emu.o x86_flags.o x86_mmu.o x86hvf.o
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obj-y += x86.o x86_cpuid.o x86_decode.o x86_descr.o x86_emu.o x86_flags.o x86_mmu.o x86hvf.o x86_task.o
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@ -6,17 +6,17 @@
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* Interfaces to Hypervisor.framework to read/write X86 registers and VMCS.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VMX_H
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@ -3,17 +3,17 @@
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* Copyright (C) 2017 Google Inc,
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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@ -3,17 +3,17 @@
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* Copyright (C) 2017 Veertu Inc,
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
|
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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@ -3,17 +3,17 @@
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* Copyright (C) 2017 Google Inc,
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
|
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* modify it under the terms of the GNU Lesser General Public
|
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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@ -2,17 +2,17 @@
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* Copyright (C) 2016 Veertu Inc,
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
|
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* modify it under the terms of the GNU Lesser General Public
|
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* License as published by the Free Software Foundation; either
|
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
|
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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* You should have received a copy of the GNU Lesser General Public
|
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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@ -3,17 +3,17 @@
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* Copyright (C) 2017 Google Inc,
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*
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License as
|
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* published by the Free Software Foundation; either version 2 or
|
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* (at your option) version 3 of the License.
|
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* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2 of the License, or (at your option) any later version.
|
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*
|
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* This program is distributed in the hope that it will be useful,
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
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* Lesser General Public License for more details.
|
||||
*
|
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* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
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* You should have received a copy of the GNU Lesser General Public
|
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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@ -3,17 +3,17 @@
|
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* Copyright (C) 2017 Google Inc,
|
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*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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@ -3,17 +3,17 @@
|
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* Copyright (C) 2017 Google Inc,
|
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*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2 of the License, or (at your option) any later version.
|
||||
*
|
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* This program is distributed in the hope that it will be useful,
|
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
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*/
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/////////////////////////////////////////////////////////////////////////
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@ -3,17 +3,17 @@
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* Copyright (C) 2017 Google Inc,
|
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*
|
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef __X86_EMU_H__
|
||||
#define __X86_EMU_H__
|
||||
|
||||
@ -3,17 +3,17 @@
|
||||
* Copyright (C) 2017 Google Inc,
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef __X86_GEN_H__
|
||||
#define __X86_GEN_H__
|
||||
|
||||
@ -3,17 +3,17 @@
|
||||
* Copyright (C) 2017 Google Inc,
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include "qemu/osdep.h"
|
||||
|
||||
|
||||
@ -3,17 +3,17 @@
|
||||
* Copyright (C) 2017 Google Inc,
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef __X86_MMU_H__
|
||||
#define __X86_MMU_H__
|
||||
|
||||
200
target/i386/hvf-utils/x86_task.c
Normal file
200
target/i386/hvf-utils/x86_task.c
Normal file
@ -0,0 +1,200 @@
|
||||
// This software is licensed under the terms of the GNU General Public
|
||||
// License version 2, as published by the Free Software Foundation, and
|
||||
// may be copied, distributed, and modified under those terms.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
#include "qemu/osdep.h"
|
||||
#include "qemu-common.h"
|
||||
#include "qemu/error-report.h"
|
||||
|
||||
#include "sysemu/hvf.h"
|
||||
#include "hvf-i386.h"
|
||||
#include "hvf-utils/vmcs.h"
|
||||
#include "hvf-utils/vmx.h"
|
||||
#include "hvf-utils/x86.h"
|
||||
#include "hvf-utils/x86_descr.h"
|
||||
#include "hvf-utils/x86_mmu.h"
|
||||
#include "hvf-utils/x86_decode.h"
|
||||
#include "hvf-utils/x86_emu.h"
|
||||
#include "hvf-utils/x86_task.h"
|
||||
#include "hvf-utils/x86hvf.h"
|
||||
|
||||
#include <Hypervisor/hv.h>
|
||||
#include <Hypervisor/hv_vmx.h>
|
||||
|
||||
#include "exec/address-spaces.h"
|
||||
#include "exec/exec-all.h"
|
||||
#include "exec/ioport.h"
|
||||
#include "hw/i386/apic_internal.h"
|
||||
#include "hw/boards.h"
|
||||
#include "qemu/main-loop.h"
|
||||
#include "strings.h"
|
||||
#include "sysemu/accel.h"
|
||||
#include "sysemu/sysemu.h"
|
||||
#include "target/i386/cpu.h"
|
||||
|
||||
// TODO: taskswitch handling
|
||||
static void save_state_to_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)
|
||||
{
|
||||
X86CPU *x86_cpu = X86_CPU(cpu);
|
||||
CPUX86State *env = &x86_cpu->env;
|
||||
|
||||
/* CR3 and ldt selector are not saved intentionally */
|
||||
tss->eip = EIP(env);
|
||||
tss->eflags = EFLAGS(env);
|
||||
tss->eax = EAX(env);
|
||||
tss->ecx = ECX(env);
|
||||
tss->edx = EDX(env);
|
||||
tss->ebx = EBX(env);
|
||||
tss->esp = ESP(env);
|
||||
tss->ebp = EBP(env);
|
||||
tss->esi = ESI(env);
|
||||
tss->edi = EDI(env);
|
||||
|
||||
tss->es = vmx_read_segment_selector(cpu, REG_SEG_ES).sel;
|
||||
tss->cs = vmx_read_segment_selector(cpu, REG_SEG_CS).sel;
|
||||
tss->ss = vmx_read_segment_selector(cpu, REG_SEG_SS).sel;
|
||||
tss->ds = vmx_read_segment_selector(cpu, REG_SEG_DS).sel;
|
||||
tss->fs = vmx_read_segment_selector(cpu, REG_SEG_FS).sel;
|
||||
tss->gs = vmx_read_segment_selector(cpu, REG_SEG_GS).sel;
|
||||
}
|
||||
|
||||
static void load_state_from_tss32(CPUState *cpu, struct x86_tss_segment32 *tss)
|
||||
{
|
||||
X86CPU *x86_cpu = X86_CPU(cpu);
|
||||
CPUX86State *env = &x86_cpu->env;
|
||||
|
||||
wvmcs(cpu->hvf_fd, VMCS_GUEST_CR3, tss->cr3);
|
||||
|
||||
RIP(env) = tss->eip;
|
||||
EFLAGS(env) = tss->eflags | 2;
|
||||
|
||||
/* General purpose registers */
|
||||
RAX(env) = tss->eax;
|
||||
RCX(env) = tss->ecx;
|
||||
RDX(env) = tss->edx;
|
||||
RBX(env) = tss->ebx;
|
||||
RSP(env) = tss->esp;
|
||||
RBP(env) = tss->ebp;
|
||||
RSI(env) = tss->esi;
|
||||
RDI(env) = tss->edi;
|
||||
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ldt}}, REG_SEG_LDTR);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->es}}, REG_SEG_ES);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->cs}}, REG_SEG_CS);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ss}}, REG_SEG_SS);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->ds}}, REG_SEG_DS);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->fs}}, REG_SEG_FS);
|
||||
vmx_write_segment_selector(cpu, (x68_segment_selector){{tss->gs}}, REG_SEG_GS);
|
||||
|
||||
#if 0
|
||||
load_segment(cpu, REG_SEG_LDTR, tss->ldt);
|
||||
load_segment(cpu, REG_SEG_ES, tss->es);
|
||||
load_segment(cpu, REG_SEG_CS, tss->cs);
|
||||
load_segment(cpu, REG_SEG_SS, tss->ss);
|
||||
load_segment(cpu, REG_SEG_DS, tss->ds);
|
||||
load_segment(cpu, REG_SEG_FS, tss->fs);
|
||||
load_segment(cpu, REG_SEG_GS, tss->gs);
|
||||
#endif
|
||||
}
|
||||
|
||||
static int task_switch_32(CPUState *cpu, x68_segment_selector tss_sel, x68_segment_selector old_tss_sel,
|
||||
uint64_t old_tss_base, struct x86_segment_descriptor *new_desc)
|
||||
{
|
||||
struct x86_tss_segment32 tss_seg;
|
||||
uint32_t new_tss_base = x86_segment_base(new_desc);
|
||||
uint32_t eip_offset = offsetof(struct x86_tss_segment32, eip);
|
||||
uint32_t ldt_sel_offset = offsetof(struct x86_tss_segment32, ldt);
|
||||
|
||||
vmx_read_mem(cpu, &tss_seg, old_tss_base, sizeof(tss_seg));
|
||||
save_state_to_tss32(cpu, &tss_seg);
|
||||
|
||||
vmx_write_mem(cpu, old_tss_base + eip_offset, &tss_seg.eip, ldt_sel_offset - eip_offset);
|
||||
vmx_read_mem(cpu, &tss_seg, new_tss_base, sizeof(tss_seg));
|
||||
|
||||
if (old_tss_sel.sel != 0xffff) {
|
||||
tss_seg.prev_tss = old_tss_sel.sel;
|
||||
|
||||
vmx_write_mem(cpu, new_tss_base, &tss_seg.prev_tss, sizeof(tss_seg.prev_tss));
|
||||
}
|
||||
load_state_from_tss32(cpu, &tss_seg);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel, int reason, bool gate_valid, uint8_t gate, uint64_t gate_type)
|
||||
{
|
||||
uint64_t rip = rreg(cpu->hvf_fd, HV_X86_RIP);
|
||||
if (!gate_valid || (gate_type != VMCS_INTR_T_HWEXCEPTION &&
|
||||
gate_type != VMCS_INTR_T_HWINTR &&
|
||||
gate_type != VMCS_INTR_T_NMI)) {
|
||||
int ins_len = rvmcs(cpu->hvf_fd, VMCS_EXIT_INSTRUCTION_LENGTH);
|
||||
macvm_set_rip(cpu, rip + ins_len);
|
||||
return;
|
||||
}
|
||||
|
||||
load_regs(cpu);
|
||||
|
||||
struct x86_segment_descriptor curr_tss_desc, next_tss_desc;
|
||||
int ret;
|
||||
x68_segment_selector old_tss_sel = vmx_read_segment_selector(cpu, REG_SEG_TR);
|
||||
uint64_t old_tss_base = vmx_read_segment_base(cpu, REG_SEG_TR);
|
||||
uint32_t desc_limit;
|
||||
struct x86_call_gate task_gate_desc;
|
||||
struct vmx_segment vmx_seg;
|
||||
|
||||
X86CPU *x86_cpu = X86_CPU(cpu);
|
||||
CPUX86State *env = &x86_cpu->env;
|
||||
|
||||
x86_read_segment_descriptor(cpu, &next_tss_desc, tss_sel);
|
||||
x86_read_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);
|
||||
|
||||
if (reason == TSR_IDT_GATE && gate_valid) {
|
||||
int dpl;
|
||||
|
||||
ret = x86_read_call_gate(cpu, &task_gate_desc, gate);
|
||||
|
||||
dpl = task_gate_desc.dpl;
|
||||
x68_segment_selector cs = vmx_read_segment_selector(cpu, REG_SEG_CS);
|
||||
if (tss_sel.rpl > dpl || cs.rpl > dpl)
|
||||
;//DPRINTF("emulate_gp");
|
||||
}
|
||||
|
||||
desc_limit = x86_segment_limit(&next_tss_desc);
|
||||
if (!next_tss_desc.p || ((desc_limit < 0x67 && (next_tss_desc.type & 8)) || desc_limit < 0x2b)) {
|
||||
VM_PANIC("emulate_ts");
|
||||
}
|
||||
|
||||
if (reason == TSR_IRET || reason == TSR_JMP) {
|
||||
curr_tss_desc.type &= ~(1 << 1); /* clear busy flag */
|
||||
x86_write_segment_descriptor(cpu, &curr_tss_desc, old_tss_sel);
|
||||
}
|
||||
|
||||
if (reason == TSR_IRET)
|
||||
EFLAGS(env) &= ~RFLAGS_NT;
|
||||
|
||||
if (reason != TSR_CALL && reason != TSR_IDT_GATE)
|
||||
old_tss_sel.sel = 0xffff;
|
||||
|
||||
if (reason != TSR_IRET) {
|
||||
next_tss_desc.type |= (1 << 1); /* set busy flag */
|
||||
x86_write_segment_descriptor(cpu, &next_tss_desc, tss_sel);
|
||||
}
|
||||
|
||||
if (next_tss_desc.type & 8)
|
||||
ret = task_switch_32(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);
|
||||
else
|
||||
//ret = task_switch_16(cpu, tss_sel, old_tss_sel, old_tss_base, &next_tss_desc);
|
||||
VM_PANIC("task_switch_16");
|
||||
|
||||
macvm_set_cr0(cpu->hvf_fd, rvmcs(cpu->hvf_fd, VMCS_GUEST_CR0) | CR0_TS);
|
||||
x86_segment_descriptor_to_vmx(cpu, tss_sel, &next_tss_desc, &vmx_seg);
|
||||
vmx_write_segment_descriptor(cpu, &vmx_seg, REG_SEG_TR);
|
||||
|
||||
store_regs(cpu);
|
||||
|
||||
hv_vcpu_invalidate_tlb(cpu->hvf_fd);
|
||||
hv_vcpu_flush(cpu->hvf_fd);
|
||||
}
|
||||
18
target/i386/hvf-utils/x86_task.h
Normal file
18
target/i386/hvf-utils/x86_task.h
Normal file
@ -0,0 +1,18 @@
|
||||
/* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef HVF_TASK
|
||||
#define HVF_TASK
|
||||
void vmx_handle_task_switch(CPUState *cpu, x68_segment_selector tss_sel,
|
||||
int reason, bool gate_valid, uint8_t gate, uint64_t gate_type);
|
||||
#endif
|
||||
@ -4,17 +4,17 @@
|
||||
* Copyright (C) 2017 Google Inc,
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include "qemu/osdep.h"
|
||||
|
||||
@ -3,17 +3,17 @@
|
||||
* Copyright (C) 2017 Google Inc,
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation; either version 2 or
|
||||
* (at your option) version 3 of the License.
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#ifndef X86HVF_H
|
||||
#define X86HVF_H
|
||||
|
||||
Loading…
Reference in New Issue
Block a user