mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-04 06:36:42 +07:00
f0514ae323
The unwinder was being initialized way too late to be any use debugging early boot crashes. Instead of relying on module_init initcalls to initialize it, let's do it explicitly as early as we can. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
80 lines
2.5 KiB
C
80 lines
2.5 KiB
C
#ifndef _UNWIND_H_
|
|
#define _UNWIND_H_
|
|
|
|
#include <linux/list.h>
|
|
|
|
/* From ABI specifications */
|
|
struct unwind_table_entry {
|
|
unsigned int region_start;
|
|
unsigned int region_end;
|
|
unsigned int Cannot_unwind:1; /* 0 */
|
|
unsigned int Millicode:1; /* 1 */
|
|
unsigned int Millicode_save_sr0:1; /* 2 */
|
|
unsigned int Region_description:2; /* 3..4 */
|
|
unsigned int reserved1:1; /* 5 */
|
|
unsigned int Entry_SR:1; /* 6 */
|
|
unsigned int Entry_FR:4; /* number saved *//* 7..10 */
|
|
unsigned int Entry_GR:5; /* number saved *//* 11..15 */
|
|
unsigned int Args_stored:1; /* 16 */
|
|
unsigned int Variable_Frame:1; /* 17 */
|
|
unsigned int Separate_Package_Body:1; /* 18 */
|
|
unsigned int Frame_Extension_Millicode:1; /* 19 */
|
|
unsigned int Stack_Overflow_Check:1; /* 20 */
|
|
unsigned int Two_Instruction_SP_Increment:1; /* 21 */
|
|
unsigned int Ada_Region:1; /* 22 */
|
|
unsigned int cxx_info:1; /* 23 */
|
|
unsigned int cxx_try_catch:1; /* 24 */
|
|
unsigned int sched_entry_seq:1; /* 25 */
|
|
unsigned int reserved2:1; /* 26 */
|
|
unsigned int Save_SP:1; /* 27 */
|
|
unsigned int Save_RP:1; /* 28 */
|
|
unsigned int Save_MRP_in_frame:1; /* 29 */
|
|
unsigned int extn_ptr_defined:1; /* 30 */
|
|
unsigned int Cleanup_defined:1; /* 31 */
|
|
|
|
unsigned int MPE_XL_interrupt_marker:1; /* 0 */
|
|
unsigned int HP_UX_interrupt_marker:1; /* 1 */
|
|
unsigned int Large_frame:1; /* 2 */
|
|
unsigned int Pseudo_SP_Set:1; /* 3 */
|
|
unsigned int reserved4:1; /* 4 */
|
|
unsigned int Total_frame_size:27; /* 5..31 */
|
|
};
|
|
|
|
struct unwind_table {
|
|
struct list_head list;
|
|
const char *name;
|
|
unsigned long gp;
|
|
unsigned long base_addr;
|
|
unsigned long start;
|
|
unsigned long end;
|
|
const struct unwind_table_entry *table;
|
|
unsigned long length;
|
|
};
|
|
|
|
struct unwind_frame_info {
|
|
struct task_struct *t;
|
|
/* Eventually we would like to be able to get at any of the registers
|
|
available; but for now we only try to get the sp and ip for each
|
|
frame */
|
|
/* struct pt_regs regs; */
|
|
unsigned long sp, ip, rp, r31;
|
|
unsigned long prev_sp, prev_ip;
|
|
};
|
|
|
|
struct unwind_table *
|
|
unwind_table_add(const char *name, unsigned long base_addr,
|
|
unsigned long gp, void *start, void *end);
|
|
void
|
|
unwind_table_remove(struct unwind_table *table);
|
|
|
|
void unwind_frame_init(struct unwind_frame_info *info, struct task_struct *t,
|
|
struct pt_regs *regs);
|
|
void unwind_frame_init_from_blocked_task(struct unwind_frame_info *info, struct task_struct *t);
|
|
void unwind_frame_init_running(struct unwind_frame_info *info, struct pt_regs *regs);
|
|
int unwind_once(struct unwind_frame_info *info);
|
|
int unwind_to_user(struct unwind_frame_info *info);
|
|
|
|
int unwind_init(void);
|
|
|
|
#endif
|