+#; -*- fundamental -*-
#define VMX_SUCCESS 0
#define VMX_FAIL_INVALID 1
#define VMX_FAIL_VALID 2
+#define VMM_FAILURE 3
#define VMCS_HOST_RSP 0x00006C14
+#define VMCS_HOST_RIP 0x00006C16
#if defined(__V3_64BIT__)
-#define r(reg) %r##reg
+#define save_registers(location) \
+ pushq %rax; \
+ movq location, %rax; \
+ movq %rdi, (%rax); \
+ movq %rsi, 8(%rax); \
+ movq %rbp, 16(%rax); \
+ movq $0, 24(%rax); \
+ movq %rbx, 32(%rax); \
+ movq %rdx, 40(%rax); \
+ movq %rcx, 48(%rax); \
+ pushq %rbx; \
+ movq 8(%rsp), %rbx; \
+ movq %rbx, 56(%rax); \
+ popq %rbx; \
+ \
+ movq %r8, 64(%rax); \
+ movq %r9, 72(%rax); \
+ movq %r10, 80(%rax); \
+ movq %r11, 88(%rax); \
+ movq %r12, 96(%rax); \
+ movq %r13, 104(%rax); \
+ movq %r14, 112(%rax); \
+ movq %r15, 120(%rax); \
+ popq %rax;
+
+#define restore_registers(location) \
+ mov location, %rax; \
+ mov (%rax), %rdi; \
+ mov 8(%rax), %rsi; \
+ mov 16(%rax), %rbp; \
+ mov 32(%rax), %rbx; \
+ mov 40(%rax), %rdx; \
+ mov 48(%rax), %rcx; \
+ \
+ mov 64(%rax), %r8; \
+ mov 72(%rax), %r9; \
+ mov 80(%rax), %r10; \
+ mov 88(%rax), %r11; \
+ mov 96(%rax), %r12; \
+ mov 104(%rax), %r13; \
+ mov 112(%rax), %r14; \
+ mov 120(%rax), %r15; \
+ pushq %rbx; \
+ movq 56(%rax), %rbx; \
+ movq %rbx, %rax; \
+ popq %rbx;
+
+#define save_ctrl_regs(location) \
+ pushq %rax; \
+ pushq %rbx; \
+ movq location, %rax; \
+ movq %cr2, %rbx; \
+ movq %rbx, 8(%rax); \
+ popq %rbx; \
+ popq %rax
+
+#define restore_ctrl_regs(location) \
+ pushq %rax; \
+ pushq %rbx; \
+ movq location, %rax; \
+ movq 8(%rax), %rbx; \
+ movq %rbx, %cr2; \
+ popq %rbx; \
+ popq %rax
#define PUSHA \
push %rax; \
pop %rcx; \
pop %rbx; \
pop %rax;
+
+
+#define PRE_LAUNCH(return_target) \
+ pushf; \
+ PUSHA; \
+ pushq %rdi; \
+ pushq %rdx; \
+ \
+ movq %rsp, %rax; \
+ movq $VMCS_HOST_RSP, %rbx; \
+ vmwrite %rax, %rbx; \
+ jz .Lfail_valid; \
+ jc .Lfail_invalid; \
+ \
+ movq return_target, %rax; \
+ movq $VMCS_HOST_RIP, %rbx; \
+ vmwrite %rax, %rbx; \
+ jz .Lfail_valid; \
+ jc .Lfail_invalid; \
+ \
+ restore_ctrl_regs(%rdx); \
+ restore_registers(%rdi);
+
+
+
+
+.align 8
+.globl v3_vmx_resume
+// vm_regs = %rdi, guest_info * = %rsi, ctrl_regs = %rdx
+v3_vmx_resume:
+
+ PRE_LAUNCH($vmx_resume_ret);
+
+ vmresume
+
+vmx_resume_ret:
+ jz .Lfail_valid
+ jc .Lfail_invalid
+ jmp .Lnormal_exit
+
+
+.align 8
+.globl v3_vmx_launch
+// vm_regs = %rdi, guest_info * = %rsi, ctrl_regs = %rdx
+v3_vmx_launch:
+
+ PRE_LAUNCH($vmx_launch_ret);
+
+ vmlaunch
+
+vmx_launch_ret:
+ jz .Lfail_valid
+ jc .Lfail_invalid
+ jmp .Lnormal_exit
+
+
+
+
+.Lfail_valid:
+ addq $16, %rsp
+ POPA
+ popf
+ movq $VMX_FAIL_VALID, %rax
+ jmp .Lreturn
+
+.Lfail_invalid:
+ addq $16, %rsp
+ POPA
+ popf
+ movq $VMX_FAIL_INVALID, %rax
+ jmp .Lreturn
+
+.Lvmm_failure:
+ addq $24, %rsp
+ movq $VMM_FAILURE, %rax
+ jmp .Lreturn
+
+
+.Lnormal_exit:
+ save_registers(16(%rsp));
+ save_ctrl_regs(16(%rsp));
+ addq $16, %rsp
+ POPA
+ popf
+ xorq %rax, %rax
+ jmp .Lreturn
+
+
+.Lreturn:
+ ret
+
#else
-#define r(reg) %e##reg
-
+#define save_registers(location) \
+ pushl %eax; \
+ movl location, %eax; \
+ movl %edi, (%eax); \
+ movl %esi, 8(%eax); \
+ movl %ebp, 16(%eax); \
+ movl $0, 24(%eax); \
+ movl %ebx, 32(%eax); \
+ movl %edx, 40(%eax); \
+ movl %ecx, 48(%eax); \
+ pushl %ebx; \
+ movl 8(%esp), %ebx; \
+ movl %ebx, 56(%eax); \
+ popl %ebx; \
+ popl %eax;
+
+
+#define restore_registers(location) \
+ pushl %eax; \
+ movl location, %eax; \
+ movl (%eax), %edi; \
+ movl 8(%eax), %esi; \
+ movl 16(%eax), %ebp; \
+ movl 32(%eax), %ebx; \
+ movl 40(%eax), %edx; \
+ movl 48(%eax), %ecx; \
+ popl %eax;
+
+
+#define save_ctrl_regs(location) \
+ push %eax; \
+ push %ebx; \
+ movl location, %eax; \
+ movl %cr2, %ebx; \
+ movl %ebx, 8(%eax); \
+ popl %ebx; \
+ popl %eax
+
+#define restore_ctrl_regs(location) \
+ push %eax; \
+ push %ebx; \
+ movl location, %eax; \
+ movl 8(%eax), %ebx; \
+ movl %ebx, %cr2; \
+ popl %ebx; \
+ popl %eax
+
#define PUSHA \
push %eax; \
push %ebx; \
pop %ebx; \
pop %eax;
-#endif
-.align 8
-.globl v3_vmx_exit_handler
-v3_vmx_exit_handler:
- PUSHA
- call v3_vmx_handle_exit
- POPA
+#define PRE_LAUNCH(return_target) \
+ pushf; \
+ PUSHA; \
+ pushl %edi; \
+ pushl %edx; \
+ \
+ movl %esp, %eax; \
+ movl $VMCS_HOST_RSP, %ebx; \
+ vmwrite %eax, %ebx; \
+ jz .Lfail_valid; \
+ jc .Lfail_invalid; \
+ \
+ movl return_target, %eax; \
+ movl $VMCS_HOST_RIP, %ebx; \
+ vmwrite %eax, %ebx; \
+ jz .Lfail_valid; \
+ jc .Lfail_invalid; \
+ \
+ restore_ctrl_regs(%edx); \
+ restore_registers(%edi);
+
+
+.align 4
+.globl v3_vmx_resume
+v3_vmx_resume:
+
+ PRE_LAUNCH($vmx_resume_ret);
-v3_vmx_vmresume:
vmresume
- sti
+
+vmx_resume_ret:
jz .Lfail_valid
jc .Lfail_invalid
- jmp .Lreturn
+ jmp .Lnormal_exit
-.globl v3_vmx_vmlaunch
-v3_vmx_vmlaunch:
- cli
- pushf
- PUSHA
+.align 4
+.globl v3_vmx_launch
+// vm_regs = %edi
+v3_vmx_launch:
- mov r(sp), r(ax)
- mov $VMCS_HOST_RSP, r(bx)
- vmwrite r(bx), r(ax)
- jz .Lfail_valid
- jc .Lfail_invalid
+ PRE_LAUNCH($vmx_launch_ret);
vmlaunch
- sti
+
+vmx_launch_ret:
jz .Lfail_valid
jc .Lfail_invalid
- jmp .Lreturn
+ jmp .Lnormal_exit
.Lfail_valid:
- mov $VMX_FAIL_VALID, r(ax)
+ addl $8, %esp
+ POPA
+ popf
+ movl $VMX_FAIL_VALID, %eax
jmp .Lreturn
.Lfail_invalid:
- mov $VMX_FAIL_INVALID, r(ax)
+ addl $8, %esp
+ POPA
+ popf
+ movl $VMX_FAIL_INVALID, %eax
jmp .Lreturn
-.Lreturn:
+.Lvmm_failure:
+ addl $12, %esp
+ movl $VMM_FAILURE, %eax
+ jmp .Lreturn
+
+
+.Lnormal_exit:
+ save_registers(8(%esp));
+ save_ctrl_regs(8(%esp));
+ addl $8, %esp
POPA
popf
- ret
-
+ xorl %eax, %eax
+ jmp .Lreturn
+.Lreturn:
+ ret
+#endif
