bitkeeper revision 1.1095 (40f67df01t5vX4nRXlk29L0xLlSunA)

use .gdbinit for setup

diff --git a/docs/HOWTOs/XenDebugger-HOWTO b/docs/HOWTOs/XenDebugger-HOWTO
index 1aba294abba0449a1cb5b2d956b9223611fdc82e..a8574baa3e3e814a0f34237c74123686a61c3bff 100644 (file)
--- a/docs/HOWTOs/XenDebugger-HOWTO
+++ b/docs/HOWTOs/XenDebugger-HOWTO
@@ -264,10 +264,41 @@ processes, pdb currently supports just Linux 2.4.
    $4 = 27
 
 
+Some Helpful .gdbinit Commands
+------------------------------
+
+define setup
+  file    .../install/boot/xen-syms
+  add-sym .../install/boot/vmlinux-syms-2.4.26-xen0
+  add-sym /homes/aho/a.out
+end
+document setup
+  load symbols for xen, xenolinux (dom 0), and "a.out"
+end
+
+define setup-linux
+  set pdb_pidhash_addr = &pidhash
+  set pdb_init_task_union_addr = &init_task_union
+
+  set task_struct_mm_offset           = (void *)&(init_task_union.task.mm) - (void *)&(init_task_union.task)
+  set task_struct_next_task_offset    = (void *)&(init_task_union.task.next_task) - (void *)&(init_task_union.task)
+  set task_struct_pid_offset          = (void *)&(init_task_union.task.pid) - (void *)&(init_task_union.task)
+  set task_struct_pidhash_next_offset = (void *)&(init_task_union.task.pidhash_next) - (void *)&(init_task_union.task)
+  set task_struct_comm_offset         = (void *)&(init_task_union.task.comm) - (void *)&(init_task_union.task)
+  set task_struct_comm_length         = sizeof (init_task_union.task.comm)
+
+  set mm_struct_pgd_offset            = sizeof (struct vm_area_struct *) * 2 + sizeof (rb_root_t)
+end
+document setup-linux
+  define various xenolinux specific offsets and sizes in pdb
+end
+
+
 
 
 Changes
 -------
 
+04.07.15 aho .gdbinit
 04.02.05 aho creation
 04.03.31 aho add description on debugging multiple domains

diff --git a/xen/arch/x86/pdb-stub.c b/xen/arch/x86/pdb-stub.c
index 532db8eb14a4bf1a768f8d8a5dd1b6de89aa782d..51cb898dc52f0c574d42ad3dc8a02c3b7737504e 100644 (file)
--- a/xen/arch/x86/pdb-stub.c
+++ b/xen/arch/x86/pdb-stub.c
@@ -22,7 +22,7 @@
 #include <xen/serial.h>
 #include <xen/softirq.h>
 
-#undef PDB_DEBUG_TRACE
+#define PDB_DEBUG_TRACE
 #ifdef PDB_DEBUG_TRACE
 #define TRC(_x) _x
 #else
@@ -971,9 +971,9 @@ int pdb_change_values(u_char *buffer, int length,
 int pdb_change_values_one_page(u_char *buffer, int length,
                               unsigned long cr3, unsigned long addr, int rw)
 {
-    l2_pgentry_t* l2_table = NULL;
-    l1_pgentry_t* l1_table = NULL;
-    u_char *page;
+    l2_pgentry_t* l2_table = NULL;                         /* page directory */
+    l1_pgentry_t* l1_table = NULL;                             /* page table */
+    u_char *page;                                                 /* 4k page */
     int bytes = 0;
 
     l2_table = map_domain_mem(cr3); 

diff --git a/xen/common/debug-linux.c b/xen/common/debug-linux.c
index ff767b51cd58d70758b35fbb9c64569c4e256ad2..557997be3f5830e3d451e55c23e2e6bb552b84eb 100644 (file)
--- a/xen/common/debug-linux.c
+++ b/xen/common/debug-linux.c
@@ -55,14 +55,15 @@ static inline unsigned long machine_to_phys(unsigned long cr3,
 unsigned long pdb_pidhash_addr         = 0xc01971e0UL;
 unsigned long pdb_init_task_union_addr = 0xc0182000UL;
 
-#define task_struct_mm_offset        0x2c
-#define task_struct_next_task_offset 0x48
-#define task_struct_pid_offset       0x7c
-#define task_struct_pidhash_next_offset 0xb0
-#define task_struct_comm_offset      0x23e
-#define task_struct_comm_length      0x10
-
-#define mm_struct_pgd_offset         0x0c
+
+unsigned int task_struct_mm_offset           = 0x2c;
+unsigned int task_struct_next_task_offset    = 0x48;
+unsigned int task_struct_pid_offset          = 0x7c;
+unsigned int task_struct_pidhash_next_offset = 0xb0;
+unsigned int task_struct_comm_offset         = 0x23e;
+unsigned int task_struct_comm_length         = 0x10;
+
+unsigned int mm_struct_pgd_offset            = 0x0c;
 
 /*
  * find the task structure of a process (pid)