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Index: sys/kern/kern_linker.c
===================================================================
--- sys/kern/kern_linker.c
+++ sys/kern/kern_linker.c
@@ -70,6 +70,12 @@
&kld_debug, 0, "Set various levels of KLD debug");
#endif
+/* These variables are used by kernel debuggers to enumerate loaded files. */
+const int kld_off_address = offsetof(struct linker_file, address);
+const int kld_off_filename = offsetof(struct linker_file, filename);
+const int kld_off_pathname = offsetof(struct linker_file, pathname);
+const int kld_off_next = offsetof(struct linker_file, link.tqe_next);
+
/*
* static char *linker_search_path(const char *name, struct mod_depend
* *verinfo);
Index: sys/kern/kern_mib.c
===================================================================
--- sys/kern/kern_mib.c
+++ sys/kern/kern_mib.c
@@ -580,6 +580,11 @@
SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD,
SYSCTL_NULL_INT_PTR, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)");
+/* Used by kernel debuggers. */
+const int pcb_size = sizeof(struct pcb);
+SYSCTL_INT(_debug_sizeof, OID_AUTO, pcb, CTLFLAG_RD,
+ SYSCTL_NULL_INT_PTR, sizeof(struct pcb), "sizeof(struct pcb)");
+
/* XXX compatibility, remove for 6.0 */
#include <sys/imgact.h>
#include <sys/imgact_elf.h>
Index: sys/kern/kern_proc.c
===================================================================
--- sys/kern/kern_proc.c
+++ sys/kern/kern_proc.c
@@ -139,6 +139,21 @@
struct mtx ppeers_lock;
uma_zone_t proc_zone;
+/*
+ * The offset of various fields in struct proc and struct thread.
+ * These are used by kernel debuggers to enumerate kernel threads and
+ * processes.
+ */
+const int proc_off_p_pid = offsetof(struct proc, p_pid);
+const int proc_off_p_comm = offsetof(struct proc, p_comm);
+const int proc_off_p_list = offsetof(struct proc, p_list);
+const int proc_off_p_threads = offsetof(struct proc, p_threads);
+const int thread_off_td_tid = offsetof(struct thread, td_tid);
+const int thread_off_td_name = offsetof(struct thread, td_name);
+const int thread_off_td_oncpu = offsetof(struct thread, td_oncpu);
+const int thread_off_td_pcb = offsetof(struct thread, td_pcb);
+const int thread_off_td_plist = offsetof(struct thread, td_plist);
+
int kstack_pages = KSTACK_PAGES;
SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0,
"Kernel stack size in pages");
Index: sys/vm/vm_kern.c
===================================================================
--- sys/vm/vm_kern.c
+++ sys/vm/vm_kern.c
@@ -94,6 +94,9 @@
const void *zero_region;
CTASSERT((ZERO_REGION_SIZE & PAGE_MASK) == 0);
+/* NB: Used by kernel debuggers. */
+const u_long vm_maxuser_address = VM_MAXUSER_ADDRESS;
+
SYSCTL_ULONG(_vm, OID_AUTO, min_kernel_address, CTLFLAG_RD,
SYSCTL_NULL_ULONG_PTR, VM_MIN_KERNEL_ADDRESS, "Min kernel address");

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