Christos Margiolis
8ada3f78e6
Reviewed by: markj Approved by: markj (mentor) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D41032
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* SPDX-License-Identifier: CDDL 1.0
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*
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* Copyright (c) 2022 Christos Margiolis <christos@FreeBSD.org>
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* Copyright (c) 2023 The FreeBSD Foundation
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*
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* Portions of this software were developed by Christos Margiolis
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* <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
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*/
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#ifndef _KINST_H_
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#define _KINST_H_
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#include <sys/dtrace.h>
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typedef struct {
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char kpd_func[DTRACE_FUNCNAMELEN];
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char kpd_mod[DTRACE_MODNAMELEN];
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int kpd_off;
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} dtrace_kinst_probedesc_t;
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#define KINSTIOC_MAKEPROBE _IOW('k', 1, dtrace_kinst_probedesc_t)
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#ifdef _KERNEL
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#include <sys/queue.h>
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#include "kinst_isa.h"
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struct kinst_probe {
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LIST_ENTRY(kinst_probe) kp_hashnext;
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const char *kp_func;
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char kp_name[16];
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dtrace_id_t kp_id;
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kinst_patchval_t kp_patchval;
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kinst_patchval_t kp_savedval;
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kinst_patchval_t *kp_patchpoint;
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struct kinst_probe_md kp_md;
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};
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LIST_HEAD(kinst_probe_list, kinst_probe);
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extern struct kinst_probe_list *kinst_probetab;
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#define KINST_PROBETAB_MAX 0x8000 /* 32k */
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#define KINST_ADDR2NDX(addr) (((uintptr_t)(addr)) & (KINST_PROBETAB_MAX - 1))
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#define KINST_GETPROBE(i) (&kinst_probetab[KINST_ADDR2NDX(i)])
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struct linker_file;
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struct linker_symval;
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/* kinst.c */
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volatile void *kinst_memcpy(volatile void *, volatile const void *, size_t);
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bool kinst_excluded(const char *);
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void kinst_probe_create(struct kinst_probe *, struct linker_file *);
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/* arch/kinst_isa.c */
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int kinst_invop(uintptr_t, struct trapframe *, uintptr_t);
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void kinst_patch_tracepoint(struct kinst_probe *, kinst_patchval_t);
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int kinst_make_probe(struct linker_file *, int, struct linker_symval *,
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void *);
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int kinst_md_init(void);
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void kinst_md_deinit(void);
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bool kinst_md_excluded(const char *);
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/* trampoline.c */
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int kinst_trampoline_init(void);
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int kinst_trampoline_deinit(void);
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uint8_t *kinst_trampoline_alloc(int);
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void kinst_trampoline_dealloc(uint8_t *);
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_KINST);
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#endif /* MALLOC_DECLARE */
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#define KINST_LOG_HELPER(fmt, ...) \
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printf("%s:%d: " fmt "%s\n", __func__, __LINE__, __VA_ARGS__)
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#define KINST_LOG(...) \
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KINST_LOG_HELPER(__VA_ARGS__, "")
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#endif /* _KERNEL */
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#endif /* _KINST_H_ */
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