bios.diff

qemu虚拟机代码

Index: apmbios.S
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/apmbios.S,v
retrieving revision 1.4
diff -u -w -r1.4 apmbios.S
--- apmbios.S	26 Dec 2005 10:35:51 -0000	1.4
+++ apmbios.S	28 Apr 2006 22:41:19 -0000
@@ -225,6 +225,7 @@
 APMSYM(05):
   cmp al, #0x05
   jne APMSYM(07)
+  sti
   hlt
   jmp APMSYM(ok)
 
Index: rombios.c
===================================================================
RCS file: /cvsroot/bochs/bochs/bios/rombios.c,v
retrieving revision 1.160
diff -u -w -r1.160 rombios.c
--- rombios.c	25 Jan 2006 17:51:49 -0000	1.160
+++ rombios.c	28 Apr 2006 22:41:21 -0000
@@ -1816,6 +1816,7 @@
 {
   printf(BX_APPNAME" BIOS - build: %s\n%s\nOptions: ",
     BIOS_BUILD_DATE, bios_cvs_version_string);
+#if 0
   printf(
 #ifdef BX_APM
   "apmbios "
@@ -1827,6 +1828,9 @@
   "eltorito "
 #endif
   "\n\n");
+#else
+  printf("apmbios pcibios eltorito \n\n");
+#endif
 }
 
 //--------------------------------------------------------------------------
@@ -8713,6 +8717,7 @@
   mov al, #0x80
 bios32_end:
   popf
+  and dword ptr[esp+4],0xfffffffc ;; reset CS.RPL for kqemu
   retf
 
 .align 16
@@ -8823,17 +8828,17 @@
 pci_pro_fail:
   pop edi
   pop esi
-  sti
   popf
   stc
+  and dword ptr[esp+4],0xfffffffc ;; reset CS.RPL for kqemu
   retf
 pci_pro_ok:
   xor ah, ah
   pop edi
   pop esi
-  sti
   popf
   clc
+  and dword ptr[esp+4],0xfffffffc ;; reset CS.RPL for kqemu
   retf
 
 pci_pro_select_reg:
@@ -8971,7 +8976,7 @@
   jmp pci_real_ok
 pci_real_f0d: ;; write configuration dword
   cmp al, #0x0d
-  jne pci_real_unknown
+  jne pci_real_f0e
   call pci_real_select_reg
   push dx
   mov dx, #0x0cfc
@@ -8979,6 +8984,46 @@
   out dx, eax
   pop dx
   jmp pci_real_ok
+pci_real_f0e: ;; get irq routing options
+  cmp al, #0x0e
+  jne pci_real_unknown
+  SEG ES
+  cmp word ptr [di], #pci_routing_table_structure_end - pci_routing_table_structure_start
+  jb pci_real_too_small    
+  SEG ES
+  mov word ptr [di], #pci_routing_table_structure_end - pci_routing_table_structure_start        
+  pushf
+  push ds
+  push es
+  push cx
+  push si
+  push di
+  cld
+  mov si, #pci_routing_table_structure_start
+  push cs
+  pop ds
+  SEG ES
+  mov cx, [di+2]
+  SEG ES
+  mov es, [di+4]
+  mov di, cx
+  mov cx, #pci_routing_table_structure_end - pci_routing_table_structure_start
+  rep 
+      movsb
+  pop di
+  pop si
+  pop cx
+  pop es
+  pop ds
+  popf
+  mov bx, #(1 << 9) | (1 << 11)   ;; irq 9 and 11 are used
+  jmp pci_real_ok
+pci_real_too_small:
+  SEG ES
+  mov word ptr [di], #pci_routing_table_structure_end - pci_routing_table_structure_start        
+  mov ah, #0x89
+  jmp pci_real_fail
+
 pci_real_unknown:
   mov ah, #0x81
 pci_real_fail:
@@ -9019,6 +9064,7 @@
   dw 0,0 ;; Miniport data
   db 0,0,0,0,0,0,0,0,0,0,0 ;; reserved
   db 0x07 ;; checksum
+pci_routing_table_structure_start:
   ;; first slot entry PCI-to-ISA (embedded)
   db 0 ;; pci bus number
   db 0x08 ;; pci device number (bit 7-3)
@@ -9097,6 +9143,7 @@
   dw 0xdef8 ;; IRQ bitmap INTD#
   db 5 ;; physical slot (0 = embedded)
   db 0 ;; reserved
+pci_routing_table_structure_end:
 
 pci_irq_list:
   db 11, 10, 9, 5;