a71123977e
This change removes the use of hardcoded absolute "/usr/include/elfutils" paths from the perf build. The problem with hardcoded paths is that it prevents them from being overridden by $prefix or by -I in CFLAGS (e.g., for cross-compiling purposes). Instead, just include the "elfutils/" subdirectory as a relative path when files are needed from that directory. Tested by building perf: - Cross-compiled for ARM on x86_64 - Built natively on x86_64 - Built on x86_64 with /usr/include/elfutils moved to another location and manually included in CFLAGS Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> LKML-Reference: <1289945793-31441-1-git-send-email-rmorell@nvidia.com> Signed-off-by: Robert Morell <rmorell@nvidia.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
#ifndef _PROBE_FINDER_H
|
|
#define _PROBE_FINDER_H
|
|
|
|
#include <stdbool.h>
|
|
#include "util.h"
|
|
#include "probe-event.h"
|
|
|
|
#define MAX_PATH_LEN 256
|
|
#define MAX_PROBE_BUFFER 1024
|
|
#define MAX_PROBES 128
|
|
|
|
static inline int is_c_varname(const char *name)
|
|
{
|
|
/* TODO */
|
|
return isalpha(name[0]) || name[0] == '_';
|
|
}
|
|
|
|
#ifdef DWARF_SUPPORT
|
|
/* Find probe_trace_events specified by perf_probe_event from debuginfo */
|
|
extern int find_probe_trace_events(int fd, struct perf_probe_event *pev,
|
|
struct probe_trace_event **tevs,
|
|
int max_tevs);
|
|
|
|
/* Find a perf_probe_point from debuginfo */
|
|
extern int find_perf_probe_point(unsigned long addr,
|
|
struct perf_probe_point *ppt);
|
|
|
|
/* Find a line range */
|
|
extern int find_line_range(int fd, struct line_range *lr);
|
|
|
|
/* Find available variables */
|
|
extern int find_available_vars_at(int fd, struct perf_probe_event *pev,
|
|
struct variable_list **vls, int max_points,
|
|
bool externs);
|
|
|
|
#include <dwarf.h>
|
|
#include <elfutils/libdw.h>
|
|
#include <elfutils/libdwfl.h>
|
|
#include <elfutils/version.h>
|
|
|
|
struct probe_finder {
|
|
struct perf_probe_event *pev; /* Target probe event */
|
|
|
|
/* Callback when a probe point is found */
|
|
int (*callback)(Dwarf_Die *sp_die, struct probe_finder *pf);
|
|
|
|
/* For function searching */
|
|
int lno; /* Line number */
|
|
Dwarf_Addr addr; /* Address */
|
|
const char *fname; /* Real file name */
|
|
Dwarf_Die cu_die; /* Current CU */
|
|
struct list_head lcache; /* Line cache for lazy match */
|
|
|
|
/* For variable searching */
|
|
#if _ELFUTILS_PREREQ(0, 142)
|
|
Dwarf_CFI *cfi; /* Call Frame Information */
|
|
#endif
|
|
Dwarf_Op *fb_ops; /* Frame base attribute */
|
|
struct perf_probe_arg *pvar; /* Current target variable */
|
|
struct probe_trace_arg *tvar; /* Current result variable */
|
|
};
|
|
|
|
struct trace_event_finder {
|
|
struct probe_finder pf;
|
|
struct probe_trace_event *tevs; /* Found trace events */
|
|
int ntevs; /* Number of trace events */
|
|
int max_tevs; /* Max number of trace events */
|
|
};
|
|
|
|
struct available_var_finder {
|
|
struct probe_finder pf;
|
|
struct variable_list *vls; /* Found variable lists */
|
|
int nvls; /* Number of variable lists */
|
|
int max_vls; /* Max no. of variable lists */
|
|
bool externs; /* Find external vars too */
|
|
bool child; /* Search child scopes */
|
|
};
|
|
|
|
struct line_finder {
|
|
struct line_range *lr; /* Target line range */
|
|
|
|
const char *fname; /* File name */
|
|
int lno_s; /* Start line number */
|
|
int lno_e; /* End line number */
|
|
Dwarf_Die cu_die; /* Current CU */
|
|
int found;
|
|
};
|
|
|
|
#endif /* DWARF_SUPPORT */
|
|
|
|
#endif /*_PROBE_FINDER_H */
|