* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
- .text
- .code16
-
-#define ASM
+#include <asm.inc>
+#include <arch/pc/x86common.h>
-#include <arch.h>
+.code32
/*
_pnp_bios_data_segment:
.word 0
-EXTERN(_PnpBiosSupported)
- .code32
+PUBLIC _PnpBiosSupported
+_PnpBiosSupported:
- pushl %edi
- pushl %esi
- pushl %ecx
- pushl %edx
+ push edi
+ push esi
+ push ecx
+ push edx
- xorl %edi,%edi
+ xor edi, edi
/* init esi */
- movl $0xF0000,%esi
+ mov esi, HEX(0F0000)
pnp_again:
- movl (%esi),%eax
- cmp $0x506E5024,%eax /* "$PnP" */
- je pnp_found
+ mov eax, [esi]
+ cmp eax, HEX(506E5024) /* "$PnP" */
+ je pnp_found
- cmp $0xFFFF0,%esi
- je pnp_not_found
+ cmp esi, HEX(0FFFF0)
+ je pnp_not_found
pnp_add:
- addl $0x10,%esi
- jmp pnp_again
+ add esi, 16
+ jmp pnp_again
pnp_found:
/* first calculate the checksum */
- pushl %esi
+ push esi
- pushl $0x21
- popl %ecx
- xorl %edx, %edx
+ push HEX(21)
+ pop ecx
+ xor edx, edx
pnp_loop:
lodsb
- addb %al,%dl
- loopl pnp_loop
+ add dl, al
+ loop pnp_loop
- testb %dl, %dl
- popl %esi
- jnz pnp_add
+ test dl, dl
+ pop esi
+ jnz pnp_add
- movl %esi,%edi
+ mov edi, esi
/* Calculate the bios entry point (far pointer) */
- xorl %eax,%eax
- movw 0x0F(%esi),%ax
- shll $16,%eax
- movw 0x0D(%esi),%ax
- movl %eax,_pnp_bios_entry_point
+ xor eax, eax
+ mov ax, [esi + 15]
+ shl eax, 16
+ mov ax, [esi + 0x0D]
+ mov _pnp_bios_entry_point, eax
/* Store bios data segment */
- movw 0x1B(%esi),%ax
- movw %ax,_pnp_bios_data_segment
+ mov ax, [esi + 0x1B]
+ mov _pnp_bios_data_segment, ax
pnp_not_found:
- movl %edi,%eax
+ mov eax, edi
- popl %edx
- popl %ecx
- popl %esi
- popl %edi
+ pop edx
+ pop ecx
+ pop esi
+ pop edi
ret
_pnp_node_count:
.word 0
-EXTERN(_PnpBiosGetDeviceNodeCount)
- .code32
+PUBLIC _PnpBiosGetDeviceNodeCount
+_PnpBiosGetDeviceNodeCount:
- pushl %ebp
- movl %esp,%ebp
+ push ebp
+ mov ebp, esp
- pushal
- push %es
+ pusha
+ push es
- call switch_to_real
+ call switch_to_real
.code16
- movw _pnp_bios_data_segment,%ax
- pushw %ax
+ mov ax, word ptr [_pnp_bios_data_segment]
+ push ax
+
+ push cs
+ mov ax, offset _pnp_node_size
+ push ax
- pushw %cs
- movw $(_pnp_node_size),%ax
- pushw %ax
+ push cs
+ mov ax, offset _pnp_node_count
+ push ax
- pushw %cs
- movw $(_pnp_node_count),%ax
- pushw %ax
+ push 0
- pushw $0
+ call dword ptr [_pnp_bios_entry_point]
+ add sp, 12
- lcall *_pnp_bios_entry_point
- addw $12,%sp
+ movzx ecx, ax
+ mov _pnp_result, ecx
- movzwl %ax,%ecx
- movl %ecx,_pnp_result
-
- call switch_to_prot
+ call switch_to_prot
.code32
- movl 0x08(%ebp),%esi
- movw _pnp_node_size,%ax
- movzwl %ax,%ecx
- movl %ecx, (%esi)
+ mov esi, [ebp + 8]
+ mov ax, _pnp_node_size
+ movzx ecx, ax
+ mov [esi], ecx
- movl 0x0C(%ebp),%esi
- movw _pnp_node_count,%ax
- movzwl %ax,%ecx
- movl %eax, (%esi)
+ mov esi, [ebp + 12]
+ mov ax, _pnp_node_count
+ movzx ecx, ax
+ mov [esi], eax
- pop %es
- popal
+ pop es
+ popa
- movl %ebp,%esp
- popl %ebp
+ mov esp, ebp
+ pop ebp
- movl _pnp_result,%eax
+ mov eax, _pnp_result
ret
EXTERN(_PnpBiosGetDeviceNode)
.code32
- pushl %ebp
- movl %esp,%ebp
+ push ebp
+ mov ebp, esp
- pushal
- push %es
+ pusha
+ push es
/* get current node number */
- movl 0x08(%ebp),%esi
- movb (%esi),%al
- movb %al,_pnp_node_number
-
- /* convert pointer to node buffer to segment/offset */
- movl 0x0C(%ebp),%eax
- shrl $4,%eax
- andl $0xf000,%eax
- movw %ax,_pnp_buffer_segment
- movl 0x0C(%ebp),%eax
- andl $0xffff,%eax
- movw %ax,_pnp_buffer_offset
-
- call switch_to_real
+ mov esi, [ebp + 8]
+ mov al, [esi]
+ mov _pnp_node_number, al
+
+ /* convert pointer to node buffer to segment/offset */
+ mov eax, [ebp + 12]
+ shr eax, 4
+ and eax, 0xf000
+ mov _pnp_buffer_segment, ax
+ mov eax, [ebp + 12]
+ and eax, 0xffff
+ mov _pnp_buffer_offset, ax
+
+ call switch_to_real
.code16
/* push bios segment */
- movw _pnp_bios_data_segment,%ax
- pushw %ax
+ mov ax, word ptr [_pnp_bios_data_segment]
+ push ax
- /* push control flag */
- pushw $0x0001
+ /* push control flag */
+ push 1
/* push pointer to node buffer (segment/offset) */
- movw _pnp_buffer_segment,%ax
- pushw %ax
- movw _pnp_buffer_offset,%ax
- pushw %ax
+ mov ax, word ptr [_pnp_buffer_segment]
+ push ax
+ mov ax, word ptr [_pnp_buffer_offset]
+ push ax
/* push pointer to node number (segment/offset) */
- pushw %cs
- movw $(_pnp_node_number),%ax
- pushw %ax
+ push cs
+ mov ax, offset _pnp_node_number
+ push ax
/* push function number */
- pushw $1
+ push 1
/* call entry point */
- lcall *_pnp_bios_entry_point
- addw $14,%sp
+ call dword ptr [_pnp_bios_entry_point]
+ add sp, 14
- movzwl %ax,%ecx
- movl %ecx,_pnp_result
+ movzx ecx, ax
+ mov _pnp_result, ecx
- call switch_to_prot
+ call switch_to_prot
.code32
/* update node number */
- movl 0x08(%ebp),%esi
- movb _pnp_node_number,%al
- movb %al,(%esi)
+ mov esi, [ebp + 8]
+ mov al, _pnp_node_number
+ mov [esi], al
- pop %es
- popal
+ pop es
+ popa
- movl %ebp,%esp
- popl %ebp
+ mov esp, ebp
+ pop ebp
- movl _pnp_result,%eax
+ mov eax, _pnp_result
ret
projects / reactos.git / blobdiff