X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fsvm_lowlevel.S;fp=palacios%2Fsrc%2Fpalacios%2Fsvm_lowlevel.S;h=1e36bc9e7bc59a433570e069cb326cd6497700a4;hp=0000000000000000000000000000000000000000;hb=ddc16b0737cf58f7aa90a69c6652cdf4090aec51;hpb=626595465a2c6987606a6bc697df65130ad8c2d3

diff --git a/palacios/src/palacios/svm_lowlevel.S b/palacios/src/palacios/svm_lowlevel.S
new file mode 100644
index 0000000..1e36bc9
--- /dev/null
+++ b/palacios/src/palacios/svm_lowlevel.S
@@ -0,0 +1,185 @@
+#;  -*- fundamental -*-
+
+
+.text
+.align 4
+
+.globl v3_svm_launch
+.globl v3_stgi
+.globl v3_clgi
+
+#define SVM_ERROR .dword 0xffffffff
+#define SVM_SUCCESS .dword 0x00000000
+
+#define vmrun .byte 0x0f,0x01,0xd8
+#define vmload .byte 0x0F,0x01,0xDA
+#define vmsave .byte 0x0F,0x01,0xDB
+#define stgi   .byte 0x0F,0x01,0xDC
+#define clgi   .byte 0x0F,0x01,0xDD
+
+
+#ifdef __V3_32BIT__
+
+#define Save_SVM_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_SVM_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;
+
+
+v3_svm_launch:
+	push	%ebp;
+	movl	%esp, %ebp;
+	pushf;
+	push	%fs;
+	push	%gs;
+	pusha;
+
+	pushl	12(%ebp);
+	pushl 	8(%ebp);
+
+	Restore_SVM_Registers(8(%esp));
+	popl	%eax;
+
+	vmload;
+	vmrun;
+	vmsave;
+
+	Save_SVM_Registers(4(%esp));
+
+	addl	$4, %esp;
+
+	popa;
+	pop	%gs;
+	pop	%fs;
+	popf;
+	pop	%ebp;
+	ret
+
+
+
+#elif __V3_64BIT__
+
+#define Save_SVM_Registers(location) 	\
+	push	%rax; 			\
+	mov	location, %rax;		\
+	mov	%rdi, (%rax);		\
+	mov	%rsi, 8(%rax);		\
+	mov	%rbp, 16(%rax);		\
+	movq	$0, 24(%rax);		\
+	mov 	%rbx, 32(%rax);		\
+	mov 	%rdx, 40(%rax);		\
+	mov 	%rcx, 48(%rax);		\
+	push	%rbx;			\
+	mov	16(%rsp), %rbx;		\
+	mov	%rbx, 56(%rax);		\
+	pop	%rbx;			\
+	pop 	%rax;			
+	
+
+#define Restore_SVM_Registers(location) \
+	push	%rax;			\
+	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;		\
+	pop	%rax;
+
+
+
+
+#define PUSHA				\
+	pushq %rbp;			\
+	pushq %rbx;			\
+	pushq %r12;			\
+	pushq %r13;			\
+	pushq %r14;			\
+	pushq %r15;			
+
+
+#define POPA				\
+	popq %r15;			\
+	popq %r14;			\
+	popq %r13;			\
+	popq %r12;			\
+	popq %rbx;			\
+	popq %rbp;			
+
+// VMCB => RDI
+// vm_regs => RSI
+
+v3_svm_launch:
+	pushf;
+	push	%fs;
+	push	%gs;
+	PUSHA
+
+	
+	
+
+
+	pushq %rsi
+
+	movq	%rdi, %rax
+	Restore_SVM_Registers(%rsi);
+
+
+	
+
+	vmload;
+	vmrun;
+	vmsave;
+
+
+	Save_SVM_Registers(8(%rsp));
+
+	addq $8, %rsp
+
+
+
+
+
+	POPA
+	pop	%gs;
+	pop	%fs;
+	popf;
+	ret
+
+
+#endif
+
+
+v3_stgi:
+	stgi;
+	ret;
+
+v3_clgi:
+	clgi;
+	ret;
+	
+