d4015ddc57
Modify trapframe decoding to properly analyze trapframe. Provide method for fixup_pc. It happens, that in some kernel functions, the GDB stack frame decoder cannot determine both func name and frame size. This is because these functions either contain invalid instruction, or their format does not match standard schema. Detect that scenarios and move PC accordingly to jump into known function schema, which GDB is able to parse. Obtained from: Semihalf Sponsored by: Juniper Networks Reviewed by: kib, zbb Differential Revision: https://reviews.freebsd.org/D5976
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
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* Copyright (c) 2004 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _KGDB_H_
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#define _KGDB_H_
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struct thread_info;
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extern kvm_t *kvm;
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struct kthr {
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struct kthr *next;
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uintptr_t paddr;
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uintptr_t kaddr;
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uintptr_t kstack;
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uintptr_t pcb;
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int tid;
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int pid;
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int cpu;
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};
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extern struct kthr *curkthr;
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void initialize_kld_target(void);
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void initialize_kgdb_target(void);
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void kgdb_dmesg(void);
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CORE_ADDR kgdb_trgt_core_pcb(u_int);
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CORE_ADDR kgdb_trgt_stop_pcb(u_int, u_int);
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void kgdb_trgt_new_objfile(struct objfile *);
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void kgdb_trgt_fetch_registers(int);
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void kgdb_trgt_store_registers(int);
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void kld_init(void);
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void kld_new_objfile(struct objfile *);
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frame_unwind_sniffer_ftype kgdb_trgt_trapframe_sniffer;
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struct kthr *kgdb_thr_first(void);
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struct kthr *kgdb_thr_init(void);
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struct kthr *kgdb_thr_lookup_tid(int);
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struct kthr *kgdb_thr_lookup_pid(int);
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struct kthr *kgdb_thr_lookup_paddr(uintptr_t);
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struct kthr *kgdb_thr_lookup_taddr(uintptr_t);
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struct kthr *kgdb_thr_next(struct kthr *);
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struct kthr *kgdb_thr_select(struct kthr *);
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char *kgdb_thr_extra_thread_info(int);
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CORE_ADDR kgdb_lookup(const char *sym);
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CORE_ADDR kgdb_parse_1(const char *, int);
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#define kgdb_parse(exp) kgdb_parse_1((exp), 0)
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#define kgdb_parse_quiet(exp) kgdb_parse_1((exp), 1)
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extern int (*arm_tdep_pc_fixup)(CORE_ADDR *pc);
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int kgdb_trgt_pc_fixup(CORE_ADDR *pc);
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#endif /* _KGDB_H_ */
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