[haiku-development] [PATCH 4/4] Improve vm86 mode tracing
- From: Jan Klötzke <jan.kloetzke@xxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Tue, 27 May 2008 23:28:44 +0200
---
src/system/kernel/arch/x86/vm86.cpp | 10 ++++++++--
1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/src/system/kernel/arch/x86/vm86.cpp
b/src/system/kernel/arch/x86/vm86.cpp
index 4183307..dbadced 100644
--- a/src/system/kernel/arch/x86/vm86.cpp
+++ b/src/system/kernel/arch/x86/vm86.cpp
@@ -18,8 +18,8 @@
//#define TRACE_VM86
#ifdef TRACE_VM86
-# define TRACE(x...) kprintf("[vm86] " x)
-# define TRACE_NP(x...) kprintf(x)
+# define TRACE(x...) dprintf("[vm86] " x)
+# define TRACE_NP(x...) dprintf(x)
#else
# define TRACE(x...)
# define TRACE_NP(x...)
@@ -513,6 +513,9 @@ vm86_fault_callback(addr_t address, addr_t faultAddress,
bool isWrite)
{
struct iframe *frame = i386_get_user_iframe();
+ TRACE("Unhandled fault at 0x%08x touching 0x%08x while %s\n",
+ faultAddress, address, isWrite?"writing":"reading");
+
// we shouldn't have unhandled page faults in vm86 mode
x86_vm86_return((struct vm86_iframe *)frame, B_BAD_ADDRESS);
@@ -548,6 +551,7 @@ vm86_prepare(struct vm86_state *state, unsigned int ramSize)
| B_READ_AREA | B_WRITE_AREA);
if (state->ram_area < B_OK) {
ret = state->ram_area;
+ TRACE("Could not create RAM area\n");
goto error;
}
@@ -557,6 +561,7 @@ vm86_prepare(struct vm86_state *state, unsigned int ramSize)
&address);
if (vectors < B_OK) {
ret = vectors;
+ TRACE("Could not copy vectors\n");
goto error;
}
ret = user_memcpy((void *)0, address, 0x502);
@@ -572,6 +577,7 @@ vm86_prepare(struct vm86_state *state, unsigned int ramSize)
| B_KERNEL_WRITE_AREA | B_READ_AREA | B_WRITE_AREA,
(addr_t)0xa0000);
if (state->bios_area < B_OK) {
ret = state->bios_area;
+ TRACE("Could not map VGA BIOS.\n");
goto error;
}
--
1.5.4.2
Other related posts:
- » [haiku-development] [PATCH 4/4] Improve vm86 mode tracing
