*/
#include <asm.inc>
-
-
- .intel_syntax noprefix
- .text
- .code16
-
#include <arch/pc/x86common.h>
+.code64
+EXTERN CallRealMode:PROC
-Int386_REGS:
-
-Int386_eax:
- .long 0
-Int386_ebx:
- .long 0
-Int386_ecx:
- .long 0
-Int386_edx:
- .long 0
-
-Int386_esi:
- .long 0
-Int386_edi:
- .long 0
-
-Int386_ds:
- .word 0
-Int386_es:
- .word 0
-Int386_fs:
- .word 0
-Int386_gs:
- .word 0
-
-Int386_eflags:
- .long 0
+/* int Int386(int ivec<ecx>, REGS* in<rdx>, REGS* out<r8>); */
+PUBLIC Int386
+Int386:
-Int386_vector:
- .quad 0
-Int386_regsin:
- .quad 0
-Int386_regsout:
- .quad 0
+ /* Save home registers */
+ mov r11, rsp
+ mov qword ptr [r11 + 8], rcx
+ mov qword ptr [r11 + 16], rdx
+ mov qword ptr [r11 + 24], r8
-/*
- * int Int386(int ivec, REGS* in, REGS* out);
- */
-EXTERN(Int386)
- .code64
-
- /* Get the function parameters */
- mov Int386_vector, rcx
- mov Int386_vector_opcode, cl
- mov Int386_regsin, rdx
- mov Int386_regsout, r8
-
- /* Save all registers + segment registers */
-// push ds
-// push es
- push fs
- push gs
+ /* Save non-volatile registers */
push rbx
- push rcx
- push rdx
+ push rbp
push rsi
push rdi
- /* Copy the input regs to our variables */
- lea rdi, Int386_REGS
- mov esi, Int386_regsin
- mov ecx, 0x24
- rep movsb
-
- call x86_64_SwitchToReal
- .code16
-
- /* Setup the registers */
- mov ax, cs:Int386_ds
- mov ds, ax /* DS register */
- mov ax, cs:Int386_es
- mov es, ax /* ES register */
- mov ax, cs:Int386_fs
- mov fs, ax /* FS register */
- mov ax, cs:Int386_gs
- mov gs, ax /* GS register */
-
- mov eax, cs:Int386_eax /* EAX register */
- mov ebx, cs:Int386_ebx /* EBX register */
- mov ecx, cs:Int386_ecx /* ECX register */
- mov edx, cs:Int386_edx /* EDX register */
-
- mov esi, cs:Int386_esi /* ESI register */
- mov edi, cs:Int386_edi /* EDI register */
-
- /* Do not set the flags register */
- /* only return its value in regsout */
- //pushl Int386_eflags
- //popfl /* EFLAGS register */
-
- /* Call the interrupt vector */
- /*int Int386_vector*/
-Int386_int_opcode:
- .byte 0xcd
-Int386_vector_opcode:
- .byte 0x00
-
- /* Save the registers */
- mov cs:Int386_eax, eax /* EAX register */
- mov cs:Int386_ebx, ebx /* EBX register */
- mov cs:Int386_ecx, ecx /* ECX register */
- mov cs:Int386_edx, edx /* EDX register */
-
- mov cs:Int386_esi, esi /* ESI register */
- mov cs:Int386_edi, edi /* EDI register */
-
- mov ax, ds /* DS register */
- mov cs:Int386_ds, ax
- mov ax, es /* ES register */
- mov cs:Int386_es, ax
- mov ax, fs /* FS register */
- mov cs:Int386_fs, ax
- mov ax, gs /* GS register */
- mov cs:Int386_gs, ax
-
- pushf
- pop cs:Int386_eflags /* EFLAGS register */
-
- call x86_16_SwitchToLong
- .code64
-
- /* Copy the variables to the output regs */
- lea rsi, Int386_REGS
- mov rdi, Int386_regsout
- mov rcx, 0x24
- rep movsb
-
- /* Restore segment and all other registers */
- pop rdi
- pop rsi
- pop rdx
- pop rcx
- pop rbx
- pop gs
- pop fs
-// pop es
-// pop ds
-
- /* Get return value */
- xor rax, rax
- mov eax, Int386_eax
+ /* Alloc stack space for home registers */
+ sub rsp, 40
+ //.ENDPROLOG
+
+int386_2:
+ /* Copy the int vector to shared memory */
+ mov dword ptr [BSS_IntVector], ecx
+
+ /* Copy input registers */
+ mov rsi, rdx
+ mov rdi, BSS_RegisterSet
+ mov rcx, REGS_SIZE / 4
+ rep movsd
+
+ xor rax, rax
+ xor rbx, rbx
+ xor rcx, rcx
+ xor rdx, rdx
+ xor rbp, rbp
+ xor rsi, rsi
+ xor rdi, rdi
+
+ /* Set the function ID and call real mode */
+ mov bx, FNID_Int386
+ call CallRealMode
+
+ /* Copy output registers */
+ mov rsi, BSS_RegisterSet
+ mov rdi, [r11 + 24]
+ mov rcx, REGS_SIZE / 4
+ rep movsd
+
+ /* cleanup and return */
+ add rsp, 40
+ pop rdi
+ pop rsi
+ pop rbp
+ pop rbx
+ ret
- ret
END
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