[runtime] Reworked coop GC stack handling in platforms with restricted access to...

[mono.git] / mono / metadata / sgen-mono.c

diff --git a/mono/metadata/sgen-mono.c b/mono/metadata/sgen-mono.c
index bb06f7eec0273cf41821d64e82c7c4c77bebffb6..11ab789d422e953843bed8809be3e06a8bdc2168 100644 (file)
--- a/mono/metadata/sgen-mono.c
+++ b/mono/metadata/sgen-mono.c
@@ -2376,6 +2376,15 @@ sgen_client_scan_thread_data (void *start_nursery, void *end_nursery, gboolean p
                        sgen_conservatively_pin_objects_from ((void**)&info->client_info.regs, (void**)&info->client_info.regs + ARCH_NUM_REGS,
                                        start_nursery, end_nursery, PIN_TYPE_STACK);
 #endif
+                       {
+                               // This is used on Coop GC for platforms where we cannot get the data for individual registers.
+                               // We force a spill of all registers into the stack and pass a chunk of data into sgen.                         
+                               MonoThreadUnwindState *state = mono_thread_info_get_suspend_state (info);
+                               if (state && state->gc_stackdata) {
+                                       sgen_conservatively_pin_objects_from (state->gc_stackdata, (void**)((char*)state->gc_stackdata + state->gc_stackdata_size),
+                                               start_nursery, end_nursery, PIN_TYPE_STACK);
+                               }
+                       }
                }
        } END_FOREACH_THREAD
 }