#\r
#------------------------------------------------------------------------------\r
\r
-.global _m16Start, _m16Size, _mThunk16Attr, _m16GdtrBase, _m16Gdt, _m16GdtrBase, _mTransition\r
-.global _InternalAsmThunk16\r
+.globl ASM_PFX(m16Start), ASM_PFX(m16Size), ASM_PFX(mThunk16Attr), ASM_PFX(m16Gdt), ASM_PFX(m16GdtrBase), ASM_PFX(mTransition)\r
+.globl ASM_PFX(InternalAsmThunk16)\r
\r
-#THUNK_ATTRIBUTE_BIG_REAL_MODE EQU 1\r
-#THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 EQU 2\r
-#THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL EQU 4\r
-\r
- .code: \r
-\r
-_m16Start: \r
+ASM_PFX(m16Start):\r
\r
SavedGdt: .space 6\r
\r
-_BackFromUserCode:\r
+ASM_PFX(BackFromUserCode):\r
push %ss\r
push %cs\r
.byte 0x66\r
- call @Base1 # push eip\r
-@Base1: \r
+ call L_Base1 # push eip\r
+L_Base1:\r
pushfw # pushfd actually\r
cli # disable interrupts\r
push %gs\r
push %es\r
push %ds\r
pushaw # pushad actually\r
- .byte 0x66,0xba # mov edx, imm32\r
-_ThunkAttr: .space 4\r
+ .byte 0x66, 0xba # mov edx, imm32\r
+ASM_PFX(ThunkAttr): .space 4\r
testb $THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15, %dl\r
- jz @1\r
+ jz 1f\r
movl $0x15cd2401, %eax # mov ax, 2401h & int 15h\r
cli # disable interrupts\r
- jnc @2\r
-@1: \r
+ jnc 2f\r
+1:\r
testb $THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL, %dl\r
- jz @2\r
+ jz 2f\r
inb $0x92, %al\r
orb $2, %al\r
outb %al, $0x92 # deactivate A20M#\r
-@2: \r
+2:\r
movl %ss, %eax\r
.byte 0x67, 0x66, 0x8d, 0x6c, 0x24, 0x34, 0x66\r
- mov %ebp,0xffffffd8(%esi)\r
- mov 0xfffffff8(%esi),%ebx\r
+ mov %ebp, 0xffffffd8(%esi)\r
+ mov 0xfffffff8(%esi), %ebx\r
shlw $4, %ax # shl eax, 4\r
addw %ax, %bp # add ebp, eax\r
- .byte 0x66,0xb8 # mov eax, imm32\r
+ .byte 0x66, 0xb8 # mov eax, imm32\r
SavedCr4: .space 4\r
movl %eax, %cr4\r
- lgdtw %cs:0xfffffff2(%edi)\r
- .byte 0x66,0xb8 # mov eax, imm32\r
+ lgdtw %cs:0xfffffff2(%edi)\r
+ .byte 0x66, 0xb8 # mov eax, imm32\r
SavedCr0: .space 4\r
movl %eax, %cr0\r
.byte 0xb8 # mov ax, imm16\r
SavedSs: .space 2\r
movl %eax, %ss\r
- .byte 0x66,0xbc # mov esp, imm32\r
+ .byte 0x66, 0xbc # mov esp, imm32\r
SavedEsp: .space 4\r
.byte 0x66\r
lret # return to protected mode\r
\r
-_EntryPoint: .long _ToUserCode - _m16Start\r
+_EntryPoint: .long ASM_PFX(ToUserCode) - ASM_PFX(m16Start)\r
.word 0x8\r
_16Idtr: .word 0x3ff\r
.long 0\r
_16Gdtr: .word GdtEnd - _NullSegDesc - 1\r
-_16GdtrBase: .long _NullSegDesc\r
+_16GdtrBase: .long _NullSegDesc\r
\r
-_ToUserCode:\r
+ASM_PFX(ToUserCode):\r
movl %ss, %edx\r
movl %ecx, %ss # set new segment selectors\r
movl %ecx, %ds\r
movl %esi, %ss # set up 16-bit stack segment\r
xchgw %bx, %sp # set up 16-bit stack pointer\r
.byte 0x66\r
- call @Base # push eip\r
-@Base: \r
- popw %bp # ebp <- offset @Base\r
+ call L_Base # push eip\r
+L_Base:\r
+ popw %bp # ebp <- offset L_Base\r
addr16 pushl 36(%si)\r
.byte 0x36\r
- lea 0xc(%esi),%eax\r
- pushl %eax\r
+ lea 0xc(%esi), %eax\r
+ push %eax\r
lret\r
\r
-@RealMode: \r
- mov %edx,%cs:0xffffffc5(%esi)\r
- mov %bx,%cs:0xffffffcb(%esi)\r
+L_RealMode:\r
+ mov %edx, %cs:0xffffffc5(%esi)\r
+ mov %bx, %cs:0xffffffcb(%esi)\r
lidtw %cs:0xffffffd7(%esi)\r
popaw # popad actually\r
- popl %ds\r
- popl %es\r
- popl %fs\r
- popl %gs\r
+ pop %ds\r
+ pop %es\r
+ pop %fs\r
+ pop %gs\r
popfw # popfd\r
lretw # transfer control to user code\r
\r
# @param Transition Pointer to the transition code\r
# @return The address of the 16-bit stack after returning from user code\r
#\r
-_InternalAsmThunk16:\r
+ASM_PFX(InternalAsmThunk16):\r
push %ebp\r
push %ebx\r
push %esi\r
push %fs\r
push %gs\r
movl 36(%esp), %esi # esi <- RegSet\r
- movzwl 0x32(%esi),%edx\r
- mov 0xc(%esi),%edi\r
- add $0xffffffc8,%edi\r
+ movzwl 0x32(%esi), %edx\r
+ mov 0xc(%esi), %edi\r
+ add $0xffffffc8, %edi\r
movl %edi, %ebx # ebx <- stack offset\r
- imul $0x10,%edx,%eax\r
+ imul $0x10, %edx, %eax\r
push $0xd\r
addl %eax, %edi # edi <- linear address of 16-bit stack\r
- popl %ecx\r
+ pop %ecx\r
rep\r
movsl # copy RegSet\r
movl 40(%esp), %eax # eax <- address of transition code\r
movl %edx, %esi # esi <- 16-bit stack segment\r
- lea 0x5e(%eax),%edx\r
+ lea 0x5e(%eax), %edx\r
movl %eax, %ecx\r
andl $0xf, %ecx\r
shll $12, %eax\r
- lea 0x6(%ecx),%ecx\r
+ lea 0x6(%ecx), %ecx\r
movw %cx, %ax\r
stosl # [edi] <- return address of user code\r
- sgdtl 0xffffffa2(%edx)\r
+ sgdtl 0xffffffa2(%edx)\r
sidtl 0x24(%esp)\r
movl %cr0, %eax\r
movl %eax, (%edx) # save CR0 in SavedCr0\r
andl $0x7ffffffe, %eax # clear PE, PG bits\r
movl %cr4, %ebp\r
- mov %ebp,0xfffffff1(%edx)\r
+ mov %ebp, 0xfffffff1(%edx)\r
andl $0x300, %ebp # clear all but PCE and OSFXSR bits\r
pushl $0x10\r
- popl %ecx # ecx <- selector for data segments\r
+ pop %ecx # ecx <- selector for data segments\r
lgdtl 0x20(%edx)\r
pushfl\r
lcall *0x14(%edx)\r
popfl\r
lidtl 0x24(%esp)\r
- lea 0xffffffcc(%ebp),%eax\r
+ lea 0xffffffcc(%ebp), %eax\r
pop %gs\r
pop %fs\r
pop %es\r
pop %ebp\r
ret\r
\r
- .const: \r
-\r
-_m16Size: .word _InternalAsmThunk16 - _m16Start\r
-_mThunk16Attr: .word _ThunkAttr - _m16Start\r
-_m16Gdt: .word _NullSegDesc - _m16Start\r
-_m16GdtrBase: .word _16GdtrBase - _m16Start\r
-_mTransition: .word _EntryPoint - _m16Start\r
+ .const:\r
\r
+ASM_PFX(m16Size): .word _InternalAsmThunk16 - ASM_PFX(m16Start)\r
+ASM_PFX(mThunk16Attr): .word _ThunkAttr - ASM_PFX(m16Start)\r
+ASM_PFX(m16Gdt): .word _NullSegDesc - ASM_PFX(m16Start)\r
+ASM_PFX(m16GdtrBase): .word _16GdtrBase - ASM_PFX(m16Start)\r
+ASM_PFX(mTransition): .word _EntryPoint - ASM_PFX(m16Start)\r
projects / mirror_edk2.git / blobdiff