Hi,
For s390 the "st_status_fixed_logout" member of "struct _lowcore" will be
changed to "psw_save_area" in 2.6.33. This patch will ensure that the correct
member will be used depending on the kernel version.
Best Regards
Michael
---
defs.h | 1 +
s390.c | 24 ++++++++++++++++++------
s390x.c | 23 ++++++++++++++++++-----
3 files changed, 37 insertions(+), 11 deletions(-)
--- a/defs.h
+++ b/defs.h
@@ -1494,6 +1494,7 @@ struct offset_table {
long attribute_owner;
long module_sect_attr_attr;
long module_sections_attrs;
+ long s390_lowcore_psw_save_area;
};
struct size_table { /* stash of commonly-used sizes */
--- a/s390.c
+++ b/s390.c
@@ -69,6 +69,19 @@ static int s390_is_uvaddr(ulong, struct
/*
+ * Initialize member offsets
+ */
+static void s390_offsets_init(void)
+{
+ if (MEMBER_EXISTS("_lowcore", "st_status_fixed_logout"))
+ MEMBER_OFFSET_INIT(s390_lowcore_psw_save_area, "_lowcore",
+ "st_status_fixed_logout");
+ else
+ MEMBER_OFFSET_INIT(s390_lowcore_psw_save_area, "_lowcore",
+ "psw_save_area");
+}
+
+/*
* Do all necessary machine-specific setup here. This is called several
* times during initialization.
*/
@@ -132,6 +145,7 @@ s390_init(int when)
machdep->hz = HZ;
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
+ s390_offsets_init();
break;
case POST_INIT:
@@ -632,8 +646,7 @@ s390_back_trace_cmd(struct bt_info *bt)
return;
}
s390_get_lowcore(cpu,lowcore);
- psw_flags = ULONG(lowcore + MEMBER_OFFSET("_lowcore",
- "st_status_fixed_logout"));
+ psw_flags = ULONG(lowcore + OFFSET(s390_lowcore_psw_save_area));
if(psw_flags & 0x10000UL){
fprintf(fp,"Task runs in userspace\n");
s390_print_lowcore(lowcore,bt,0);
@@ -755,7 +768,7 @@ s390_print_lowcore(char* lc, struct bt_i
char* ptr;
unsigned long tmp[4];
- ptr = lc + MEMBER_OFFSET("_lowcore","st_status_fixed_logout");
+ ptr = lc + OFFSET(s390_lowcore_psw_save_area);
tmp[0]=ULONG(ptr);
tmp[1]=ULONG(ptr + S390_WORD_SIZE);
@@ -915,9 +928,8 @@ s390_get_stack_frame(struct bt_info *bt,
return;
if(s390_has_cpu(bt->task) && esp){
- *eip = ULONG(lowcore + MEMBER_OFFSET("_lowcore",
- "st_status_fixed_logout") + S390_WORD_SIZE)
- & S390_ADDR_MASK;
+ *eip = ULONG(lowcore + OFFSET(s390_lowcore_psw_save_area) +
+ S390_WORD_SIZE) & S390_ADDR_MASK;
} else {
if(!STRUCT_EXISTS("stack_frame")){
r14_offset = 56;
--- a/s390x.c
+++ b/s390x.c
@@ -65,6 +65,18 @@ static void s390x_dump_line_number(ulong
static struct line_number_hook s390x_line_number_hooks[];
static int s390x_is_uvaddr(ulong, struct task_context *);
+/*
+ * Initialize member offsets
+ */
+static void s390x_offsets_init(void)
+{
+ if (MEMBER_EXISTS("_lowcore", "st_status_fixed_logout"))
+ MEMBER_OFFSET_INIT(s390_lowcore_psw_save_area, "_lowcore",
+ "st_status_fixed_logout");
+ else
+ MEMBER_OFFSET_INIT(s390_lowcore_psw_save_area, "_lowcore",
+ "psw_save_area");
+}
/*
* Do all necessary machine-specific setup here. This is called several
@@ -130,6 +142,7 @@ s390x_init(int when)
machdep->hz = HZ;
machdep->section_size_bits = _SECTION_SIZE_BITS;
machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
+ s390x_offsets_init();
break;
case POST_INIT:
@@ -642,8 +655,8 @@ s390x_back_trace_cmd(struct bt_info *bt)
return;
}
s390x_get_lowcore(cpu,lowcore);
- psw_flags = ULONG(lowcore + MEMBER_OFFSET("_lowcore",
- "st_status_fixed_logout"));
+ psw_flags = ULONG(lowcore + OFFSET(s390_lowcore_psw_save_area));
+
if(psw_flags & 0x1000000000000ULL){
fprintf(fp,"Task runs in userspace\n");
s390x_print_lowcore(lowcore,bt,0);
@@ -766,7 +779,7 @@ s390x_print_lowcore(char* lc, struct bt_
char* ptr;
unsigned long tmp[4];
- ptr = lc + MEMBER_OFFSET("_lowcore","st_status_fixed_logout");
+ ptr = lc + OFFSET(s390_lowcore_psw_save_area);
tmp[0]=ULONG(ptr);
tmp[1]=ULONG(ptr + S390X_WORD_SIZE);
@@ -945,8 +958,8 @@ s390x_get_stack_frame(struct bt_info *bt
return;
if(s390x_has_cpu(bt->task) && esp){
- *eip = ULONG(lowcore + MEMBER_OFFSET("_lowcore",
- "st_status_fixed_logout") + S390X_WORD_SIZE);
+ *eip = ULONG(lowcore + OFFSET(s390_lowcore_psw_save_area) +
+ S390X_WORD_SIZE);
} else {
if(!STRUCT_EXISTS("stack_frame")){
r14_offset = 112;
--
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