This patch convert the int15 interrupt handler code into C.
Cc: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Sasha Levin <levinsasha928@xxxxxxxxx>
Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxx>
---
tools/kvm/Makefile | 6 ++++--
tools/kvm/bios/bios.S | 9 +++------
tools/kvm/bios/int15.c | 12 ++++++++++++
tools/kvm/include/kvm/bios.h | 5 +++++
tools/kvm/include/kvm/vesa.h | 1 -
5 files changed, 24 insertions(+), 9 deletions(-)
create mode 100644 tools/kvm/bios/int15.c
diff --git a/tools/kvm/Makefile b/tools/kvm/Makefile
index 672027d..5bde355 100644
--- a/tools/kvm/Makefile
+++ b/tools/kvm/Makefile
@@ -199,15 +199,17 @@ BIOS_CFLAGS += -mregparm=3
bios.o: bios/bios.bin bios/bios-rom.h
-bios/bios.bin.elf: bios/bios.S bios/e820.c bios/int10.c bios/rom.ld.S
+bios/bios.bin.elf: bios/bios.S bios/e820.c bios/int10.c bios/int15.c bios/rom.ld.S
$(E) " CC bios/e820.o"
$(Q) $(CC) -include code16gcc.h $(CFLAGS) $(BIOS_CFLAGS) -c -s bios/e820.c -o bios/e820.o
$(E) " CC bios/int10.o"
$(Q) $(CC) -include code16gcc.h $(CFLAGS) $(BIOS_CFLAGS) -c -s bios/int10.c -o bios/int10.o
+ $(E) " CC bios/int15.o"
+ $(Q) $(CC) -include code16gcc.h $(CFLAGS) $(BIOS_CFLAGS) -c -s bios/int15.c -o bios/int15.o
$(E) " CC bios/bios.o"
$(Q) $(CC) $(CFLAGS) $(BIOS_CFLAGS) -c -s bios/bios.S -o bios/bios.o
$(E) " LD " $@
- $(Q) ld -T bios/rom.ld.S -o bios/bios.bin.elf bios/bios.o bios/e820.o bios/int10.o
+ $(Q) ld -T bios/rom.ld.S -o bios/bios.bin.elf bios/bios.o bios/e820.o bios/int10.o bios/int15.o
bios/bios.bin: bios/bios.bin.elf
$(E) " OBJCOPY " $@
diff --git a/tools/kvm/bios/bios.S b/tools/kvm/bios/bios.S
index fe2d97b..2ee21a9 100644
--- a/tools/kvm/bios/bios.S
+++ b/tools/kvm/bios/bios.S
@@ -73,16 +73,13 @@ ENTRY(bios_int10)
ENTRY_END(bios_int10)
ENTRY(bios_int15)
- cmp $0xE820, %eax
- jne 1f
-
SAVE_BIOSREGS
- movl %esp, %eax # it's bioscall case
- call e820_query_map
+ movl %esp, %eax
+ call int15_handler
RESTORE_BIOSREGS
-1:
+
IRET
ENTRY_END(bios_int15)
diff --git a/tools/kvm/bios/int15.c b/tools/kvm/bios/int15.c
new file mode 100644
index 0000000..e1a1ce4
--- /dev/null
+++ b/tools/kvm/bios/int15.c
@@ -0,0 +1,12 @@
+#include "kvm/bios.h"
+
+#include "kvm/e820.h"
+
+bioscall void int15_handler(struct biosregs *regs)
+{
+ switch (regs->eax) {
+ case 0xe820:
+ e820_query_map(regs);
+ break;
+ }
+}
diff --git a/tools/kvm/include/kvm/bios.h b/tools/kvm/include/kvm/bios.h
index 69a5654..469576e 100644
--- a/tools/kvm/include/kvm/bios.h
+++ b/tools/kvm/include/kvm/bios.h
@@ -58,6 +58,8 @@
#ifndef __ASSEMBLER__
+#include <linux/types.h>
+
struct biosregs {
u32 eax;
u32 ebx;
@@ -73,6 +75,9 @@ struct biosregs {
u32 eflags;
};
+void int10_handler(struct biosregs *regs);
+void int15_handler(struct biosregs *regs);
+
#endif
#endif /* BIOS_H_ */
diff --git a/tools/kvm/include/kvm/vesa.h b/tools/kvm/include/kvm/vesa.h
index 7b9a5ce..ac041d9 100644
--- a/tools/kvm/include/kvm/vesa.h
+++ b/tools/kvm/include/kvm/vesa.h
@@ -14,6 +14,5 @@ struct kvm;
struct biosregs;
struct framebuffer *vesa__init(struct kvm *self);
-void int10_handler(struct biosregs *args);
#endif
--
1.7.0.4
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