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btrace: Replace struct btrace_function::segment.

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This used to hold a pair of pointers to the previous and next function segment
that belong to this function call.  Replace with a pair of indices into the
vector of function segments.
This commit is contained in:
Tim Wiederhake
2017-05-30 12:47:37 +02:00
parent eb8f2b9c44
commit 4aeb0dfcc4
5 changed files with 57 additions and 37 deletions
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17
gdb/btrace.h
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@@ -85,13 +85,6 @@ struct btrace_insn
typedef struct btrace_insn btrace_insn_s;
DEF_VEC_O (btrace_insn_s);
/* A doubly-linked list of branch trace function segments. */
struct btrace_func_link
{
struct btrace_function *prev;
struct btrace_function *next;
};
/* Flags for btrace function segments. */
enum btrace_function_flag
{
@@ -146,10 +139,12 @@ struct btrace_function
struct minimal_symbol *msym;
struct symbol *sym;
/* The previous and next segment belonging to the same function.
If a function calls another function, the former will have at least
two segments: one before the call and another after the return. */
struct btrace_func_link segment;
/* The function segment numbers of the previous and next segment belonging to
the same function. If a function calls another function, the former will
have at least two segments: one before the call and another after the
return. Will be zero if there is no such function segment. */
unsigned int prev;
unsigned int next;
/* The function segment number of the directly preceding function segment in
a (fake) call stack. Will be zero if there is no such function segment in