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[RFC,v3,5/7] target/ppc: Move handling of hardware breakpoints to a separate function

Message ID 20190118140758.829-6-farosas@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series target/ppc: single step for KVM HV | expand

Commit Message

Fabiano Rosas Jan. 18, 2019, 2:07 p.m. UTC 
This is in preparation for a refactoring of the kvm_handle_debug
function in the next patch.

Signed-off-by: Fabiano Rosas <farosas@linux.ibm.com>
---
 target/ppc/kvm.c | 47 ++++++++++++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 19 deletions(-)
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Patch

diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index ebbb48c42f..96a5895792 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -1594,35 +1594,44 @@  void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
     }
 }
 
+static int kvm_handle_hw_breakpoint(CPUState *cs,
+                                    struct kvm_debug_exit_arch *arch_info)
+{
+    int handle = 0;
+    int n;
+    int flag = 0;
+
+    if (nb_hw_breakpoint + nb_hw_watchpoint > 0) {
+        if (arch_info->status & KVMPPC_DEBUG_BREAKPOINT) {
+            n = find_hw_breakpoint(arch_info->address, GDB_BREAKPOINT_HW);
+            if (n >= 0) {
+                handle = 1;
+            }
+        } else if (arch_info->status & (KVMPPC_DEBUG_WATCH_READ |
+                                        KVMPPC_DEBUG_WATCH_WRITE)) {
+            n = find_hw_watchpoint(arch_info->address,  &flag);
+            if (n >= 0) {
+                handle = 1;
+                cs->watchpoint_hit = &hw_watchpoint;
+                hw_watchpoint.vaddr = hw_debug_points[n].addr;
+                hw_watchpoint.flags = flag;
+            }
+        }
+    }
+    return handle;
+}
+
 static int kvm_handle_debug(PowerPCCPU *cpu, struct kvm_run *run)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
     struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
     int handle = 0;
-    int n;
-    int flag = 0;
 
     if (cs->singlestep_enabled) {
         handle = 1;
     } else if (arch_info->status) {
-        if (nb_hw_breakpoint + nb_hw_watchpoint > 0) {
-            if (arch_info->status & KVMPPC_DEBUG_BREAKPOINT) {
-                n = find_hw_breakpoint(arch_info->address, GDB_BREAKPOINT_HW);
-                if (n >= 0) {
-                    handle = 1;
-                }
-            } else if (arch_info->status & (KVMPPC_DEBUG_WATCH_READ |
-                                            KVMPPC_DEBUG_WATCH_WRITE)) {
-                n = find_hw_watchpoint(arch_info->address,  &flag);
-                if (n >= 0) {
-                    handle = 1;
-                    cs->watchpoint_hit = &hw_watchpoint;
-                    hw_watchpoint.vaddr = hw_debug_points[n].addr;
-                    hw_watchpoint.flags = flag;
-                }
-            }
-        }
+        handle = kvm_handle_hw_breakpoint(cs, arch_info);
     } else if (kvm_find_sw_breakpoint(cs, arch_info->address)) {
         handle = 1;
     } else {