Changeset 97693 in vbox for trunk/include

Timestamp:

Nov 28, 2022 10:03:17 PM (2 years ago)

Author:

vboxsync

Message:

VMM/DBGF: Added a DBGFBpCheckInstruction function for checking for instruction breakpoint. bugref:9898

Location:

trunk/include

Files:

• VBox/vmm/dbgf.h (modified) (1 diff)
• iprt/x86.h (modified) (2 diffs)

trunk/include/VBox/vmm/dbgf.h

@@ -1122 +1122 @@
 VMM_INT_DECL(bool)          DBGFBpIsInt3Armed(PVM pVM);
 VMM_INT_DECL(bool)          DBGFIsStepping(PVMCPU pVCpu);
+VMM_INT_DECL(VBOXSTRICTRC)  DBGFBpCheckInstruction(PVMCC pVM, PVMCPUCC pVCpu, RTGCPTR GCPtrPC);
 VMM_INT_DECL(VBOXSTRICTRC)  DBGFBpCheckIo(PVM pVM, PVMCPU pVCpu, PCPUMCTX pCtx, RTIOPORT uIoPort, uint8_t cbValue);
 VMM_INT_DECL(VBOXSTRICTRC)  DBGFBpCheckPortIo(PVMCC pVM, PVMCPU pVCpu, RTIOPORT uIoPort,

trunk/include/iprt/x86.h

@@ -1151 +1151 @@
 
 #ifndef VBOX_FOR_DTRACE_LIB
+/** Checks the RW and LEN fields are set up for an instruction breakpoint.
+ * @note This does not check if it's enabled. */
+# define X86_DR7_IS_EO_CFG(a_uDR7, a_iBp)   ( ((a_uDR7) & (UINT32_C(0x000f0000) << ((a_iBp) * 4))) == 0 )
+/** Checks if an instruction breakpoint is enabled and configured correctly.
+ * @sa X86_DR7_IS_EO_CFG, X86_DR7_ANY_EO_ENABLED */
+# define X86_DR7_IS_EO_ENABLED(a_uDR7, a_iBp) \
+    ( ((a_uDR7) & (UINT32_C(0x03) << ((a_iBp) * 2))) != 0 && X86_DR7_IS_EO_CFG(a_uDR7, a_iBp) )
+/** Checks if there are any instruction fetch breakpoint types configured in the
+ * RW and LEN registers.
+ * @sa X86_DR7_IS_EO_CFG, X86_DR7_IS_EO_ENABLED */
+# define X86_DR7_ANY_EO_ENABLED(a_uDR7) \
+    (   (((a_uDR7) & UINT32_C(0x03)) != 0 && ((a_uDR7) & UINT32_C(0x000f0000)) == 0) \
+     || (((a_uDR7) & UINT32_C(0x0c)) != 0 && ((a_uDR7) & UINT32_C(0x00f00000)) == 0) \
+     || (((a_uDR7) & UINT32_C(0x30)) != 0 && ((a_uDR7) & UINT32_C(0x0f000000)) == 0) \
+     || (((a_uDR7) & UINT32_C(0xc0)) != 0 && ((a_uDR7) & UINT32_C(0xf0000000)) == 0) )
+
 /** Checks if there are any I/O breakpoint types configured in the RW
  * registers.  Does NOT check if these are enabled, sorry. */
@@ -1165 +1181 @@
 AssertCompile(X86_DR7_ANY_RW_IO(UINT32_C(0x00030000)) == 0);
 AssertCompile(X86_DR7_ANY_RW_IO(UINT32_C(0x00040000)) == 0);
+
 #endif /* !VBOX_FOR_DTRACE_LIB */