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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Fix dr access from or to extended registers on x86_64.
# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID f07676d5c3ab62e5af6359202bd94c499a9ecc7f
# Parent 1d9df2f7030ddfc19b3f17cc2d883314bc939d88
Fix dr access from or to extended registers on x86_64.
Also some cleanups.
Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
---
xen/arch/x86/hvm/vmx/vmx.c | 114 ++++++++++++++++++++++++---------------------
1 files changed, 61 insertions(+), 53 deletions(-)
diff -r 1d9df2f7030d -r f07676d5c3ab xen/arch/x86/hvm/vmx/vmx.c
--- a/xen/arch/x86/hvm/vmx/vmx.c Fri May 05 13:58:13 2006 +0100
+++ b/xen/arch/x86/hvm/vmx/vmx.c Fri May 05 13:59:17 2006 +0100
@@ -893,6 +893,20 @@ static void vmx_vmexit_do_cpuid(struct c
#define CASE_GET_REG_P(REG, reg) \
case REG_ ## REG: reg_p = (unsigned long *)&(regs->reg); break
+#ifdef __i386__
+#define CASE_EXTEND_GET_REG_P
+#else
+#define CASE_EXTEND_GET_REG_P \
+ CASE_GET_REG_P(R8, r8); \
+ CASE_GET_REG_P(R9, r9); \
+ CASE_GET_REG_P(R10, r10); \
+ CASE_GET_REG_P(R11, r11); \
+ CASE_GET_REG_P(R12, r12); \
+ CASE_GET_REG_P(R13, r13); \
+ CASE_GET_REG_P(R14, r14); \
+ CASE_GET_REG_P(R15, r15)
+#endif
+
static void vmx_dr_access (unsigned long exit_qualification, struct
cpu_user_regs *regs)
{
unsigned int reg;
@@ -908,14 +922,15 @@ static void vmx_dr_access (unsigned long
"vmx_dr_access : eip=%lx, reg=%d, exit_qualification = %lx",
eip, reg, exit_qualification);
- switch(exit_qualification & DEBUG_REG_ACCESS_REG) {
- CASE_GET_REG_P(EAX, eax);
- CASE_GET_REG_P(ECX, ecx);
- CASE_GET_REG_P(EDX, edx);
- CASE_GET_REG_P(EBX, ebx);
- CASE_GET_REG_P(EBP, ebp);
- CASE_GET_REG_P(ESI, esi);
- CASE_GET_REG_P(EDI, edi);
+ switch ( exit_qualification & DEBUG_REG_ACCESS_REG ) {
+ CASE_GET_REG_P(EAX, eax);
+ CASE_GET_REG_P(ECX, ecx);
+ CASE_GET_REG_P(EDX, edx);
+ CASE_GET_REG_P(EBX, ebx);
+ CASE_GET_REG_P(EBP, ebp);
+ CASE_GET_REG_P(ESI, esi);
+ CASE_GET_REG_P(EDI, edi);
+ CASE_EXTEND_GET_REG_P;
case REG_ESP:
break;
default:
@@ -1525,28 +1540,29 @@ static int vmx_set_cr0(unsigned long val
return 1;
}
-#define CASE_GET_REG(REG, reg) \
+#define CASE_SET_REG(REG, reg) \
+ case REG_ ## REG: regs->reg = value; break
+#define CASE_GET_REG(REG, reg) \
case REG_ ## REG: value = regs->reg; break
-#define CASE_EXTEND_SET_REG \
- CASE_EXTEND_REG(S)
-#define CASE_EXTEND_GET_REG \
- CASE_EXTEND_REG(G)
+#define CASE_EXTEND_SET_REG \
+ CASE_EXTEND_REG(S)
+#define CASE_EXTEND_GET_REG \
+ CASE_EXTEND_REG(G)
#ifdef __i386__
#define CASE_EXTEND_REG(T)
#else
-#define CASE_EXTEND_REG(T) \
- CASE_ ## T ## ET_REG(R8, r8); \
- CASE_ ## T ## ET_REG(R9, r9); \
+#define CASE_EXTEND_REG(T) \
+ CASE_ ## T ## ET_REG(R8, r8); \
+ CASE_ ## T ## ET_REG(R9, r9); \
CASE_ ## T ## ET_REG(R10, r10); \
CASE_ ## T ## ET_REG(R11, r11); \
CASE_ ## T ## ET_REG(R12, r12); \
CASE_ ## T ## ET_REG(R13, r13); \
CASE_ ## T ## ET_REG(R14, r14); \
- CASE_ ## T ## ET_REG(R15, r15);
+ CASE_ ## T ## ET_REG(R15, r15)
#endif
-
/*
* Write to control registers
@@ -1557,31 +1573,28 @@ static int mov_to_cr(int gp, int cr, str
unsigned long old_cr;
struct vcpu *v = current;
- switch (gp) {
- CASE_GET_REG(EAX, eax);
- CASE_GET_REG(ECX, ecx);
- CASE_GET_REG(EDX, edx);
- CASE_GET_REG(EBX, ebx);
- CASE_GET_REG(EBP, ebp);
- CASE_GET_REG(ESI, esi);
- CASE_GET_REG(EDI, edi);
- CASE_EXTEND_GET_REG
- case REG_ESP:
- __vmread(GUEST_RSP, &value);
+ switch ( gp ) {
+ CASE_GET_REG(EAX, eax);
+ CASE_GET_REG(ECX, ecx);
+ CASE_GET_REG(EDX, edx);
+ CASE_GET_REG(EBX, ebx);
+ CASE_GET_REG(EBP, ebp);
+ CASE_GET_REG(ESI, esi);
+ CASE_GET_REG(EDI, edi);
+ CASE_EXTEND_GET_REG;
+ case REG_ESP:
+ __vmread(GUEST_RSP, &value);
break;
default:
printk("invalid gp: %d\n", gp);
__hvm_bug(regs);
}
- HVM_DBG_LOG(DBG_LEVEL_1, "mov_to_cr: CR%d, value = %lx,", cr, value);
- HVM_DBG_LOG(DBG_LEVEL_1, "current = %lx,", (unsigned long) current);
-
- switch(cr) {
+ HVM_DBG_LOG(DBG_LEVEL_1, "CR%d, value = %lx", cr, value);
+
+ switch ( cr ) {
case 0:
- {
return vmx_set_cr0(value);
- }
case 3:
{
unsigned long old_base_mfn, mfn;
@@ -1753,11 +1766,6 @@ static int mov_to_cr(int gp, int cr, str
return 1;
}
-#define CASE_SET_REG(REG, reg) \
- case REG_ ## REG: \
- regs->reg = value; \
- break
-
/*
* Read from control registers. CR0 and CR4 are read from the shadow.
*/
@@ -1766,22 +1774,22 @@ static void mov_from_cr(int cr, int gp,
unsigned long value;
struct vcpu *v = current;
- if (cr != 3)
+ if ( cr != 3 )
__hvm_bug(regs);
value = (unsigned long) v->arch.hvm_vmx.cpu_cr3;
- switch (gp) {
- CASE_SET_REG(EAX, eax);
- CASE_SET_REG(ECX, ecx);
- CASE_SET_REG(EDX, edx);
- CASE_SET_REG(EBX, ebx);
- CASE_SET_REG(EBP, ebp);
- CASE_SET_REG(ESI, esi);
- CASE_SET_REG(EDI, edi);
- CASE_EXTEND_SET_REG
- case REG_ESP:
- __vmwrite(GUEST_RSP, value);
+ switch ( gp ) {
+ CASE_SET_REG(EAX, eax);
+ CASE_SET_REG(ECX, ecx);
+ CASE_SET_REG(EDX, edx);
+ CASE_SET_REG(EBX, ebx);
+ CASE_SET_REG(EBP, ebp);
+ CASE_SET_REG(ESI, esi);
+ CASE_SET_REG(EDI, edi);
+ CASE_EXTEND_SET_REG;
+ case REG_ESP:
+ __vmwrite(GUEST_RSP, value);
regs->esp = value;
break;
default:
@@ -1789,7 +1797,7 @@ static void mov_from_cr(int cr, int gp,
__hvm_bug(regs);
}
- HVM_DBG_LOG(DBG_LEVEL_VMMU, "mov_from_cr: CR%d, value = %lx,", cr, value);
+ HVM_DBG_LOG(DBG_LEVEL_VMMU, "CR%d, value = %lx", cr, value);
}
static int vmx_cr_access(unsigned long exit_qualification, struct
cpu_user_regs *regs)
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