104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/*
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* Copyright (c) 2012, Chris Andrews. All rights reserved.
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*/
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#ifdef __linux__
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#include <endian.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#ifndef _LITTLE_ENDIAN
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#define _LITTLE_ENDIAN
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#endif
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#endif
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#endif
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#include <sys/dtrace.h>
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <assert.h>
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#define FUNC_SIZE 32
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#include "usdt.h"
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extern void usdt_tracepoint_isenabled(void);
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extern void usdt_tracepoint_probe(void);
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extern void usdt_tracepoint_end(void);
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extern void usdt_probe_args(void *, int, void**);
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uint32_t usdt_probe_offset(usdt_probe_t *probe, char *dof, uint8_t argc);
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uint32_t usdt_is_enabled_offset(usdt_probe_t *probe, char *dof);
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int usdt_create_tracepoints(usdt_probe_t *probe);
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void usdt_free_tracepoints(usdt_probe_t *probe);
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typedef struct usdt_dof_section {
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dof_secidx_t index;
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uint32_t type;
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uint32_t flags;
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uint32_t align;
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uint64_t offset;
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uint64_t size;
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uint32_t entsize;
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size_t pad;
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struct usdt_dof_section *next;
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char *data;
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} usdt_dof_section_t;
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int usdt_dof_section_init(usdt_dof_section_t *section,
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uint32_t type, dof_secidx_t index);
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int usdt_dof_section_add_data(usdt_dof_section_t *section,
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void *data, size_t length);
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void usdt_dof_section_free(usdt_dof_section_t *section);
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typedef struct usdt_strtab {
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dof_secidx_t index;
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uint32_t type;
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uint32_t flags;
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uint32_t align;
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uint64_t offset;
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uint64_t size;
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uint32_t entsize;
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size_t pad;
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int strindex;
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char *data;
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} usdt_strtab_t;
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int usdt_strtab_init(usdt_strtab_t *strtab, dof_secidx_t index);
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dof_stridx_t usdt_strtab_add(usdt_strtab_t *strtab, const char *string);
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char *usdt_strtab_header(usdt_strtab_t *strtab);
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size_t usdt_strtab_size(usdt_strtab_t *strtab);
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size_t usdt_provider_dof_size(usdt_provider_t *provider, usdt_strtab_t *strtab);
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typedef struct usdt_dof_file {
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char *dof;
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int gen;
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size_t size;
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usdt_dof_section_t *sections;
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} usdt_dof_file_t;
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usdt_dof_file_t *usdt_dof_file_init(usdt_provider_t *provider, size_t size);
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void usdt_dof_file_append_section(usdt_dof_file_t *file, usdt_dof_section_t *section);
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void usdt_dof_file_generate(usdt_dof_file_t *file, usdt_strtab_t *strtab);
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int usdt_dof_file_load(usdt_dof_file_t *file, const char *module);
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int usdt_dof_file_unload(usdt_dof_file_t *file);
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void usdt_dof_file_free(usdt_dof_file_t *file);
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int usdt_dof_probes_sect(usdt_dof_section_t *probes,
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usdt_provider_t *provider, usdt_strtab_t *strtab);
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int usdt_dof_prargs_sect(usdt_dof_section_t *prargs,
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usdt_provider_t *provider);
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int usdt_dof_proffs_sect(usdt_dof_section_t *proffs,
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usdt_provider_t *provider, char *dof);
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int usdt_dof_prenoffs_sect(usdt_dof_section_t *prenoffs,
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usdt_provider_t *provider, char *dof);
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int usdt_dof_provider_sect(usdt_dof_section_t *provider_s,
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usdt_provider_t *provider);
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