From 281d762b1a56317171e462666b98d50bfa31a08a Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Wed, 21 Feb 2018 16:53:56 -0700 Subject: Remove cleanups from check_fast_tracepoint_sals This changes the gdbarch fast_tracepoint_valid_at method to use a std::string as its out parameter, and then updates all the uses. This allows removing a cleanup from breakpoint.c. Regression tested by the buildbot. ChangeLog 2018-02-24 Tom Tromey * i386-tdep.c (i386_fast_tracepoint_valid_at): "msg" now a std::string. * gdbarch.sh (fast_tracepoint_valid_at): Change "msg" to a std::string*. * gdbarch.c: Rebuild. * gdbarch.h: Rebuild. * breakpoint.c (check_fast_tracepoint_sals): Use std::string. * arch-utils.h (default_fast_tracepoint_valid_at): Update. * arch-utils.c (default_fast_tracepoint_valid_at): "msg" now a std::string*. --- gdb/ChangeLog | 13 +++++++++++++ gdb/arch-utils.c | 4 ++-- gdb/arch-utils.h | 2 +- gdb/breakpoint.c | 14 +++----------- gdb/gdbarch.c | 2 +- gdb/gdbarch.h | 4 ++-- gdb/gdbarch.sh | 2 +- gdb/i386-tdep.c | 10 +++++----- 8 files changed, 28 insertions(+), 23 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 5297dcb..df920f8 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,16 @@ +2018-02-24 Tom Tromey + + * i386-tdep.c (i386_fast_tracepoint_valid_at): "msg" now a + std::string. + * gdbarch.sh (fast_tracepoint_valid_at): Change "msg" to a + std::string*. + * gdbarch.c: Rebuild. + * gdbarch.h: Rebuild. + * breakpoint.c (check_fast_tracepoint_sals): Use std::string. + * arch-utils.h (default_fast_tracepoint_valid_at): Update. + * arch-utils.c (default_fast_tracepoint_valid_at): "msg" now a + std::string*. + 2018-02-23 Simon Marchi * gdbtypes.h (sect_offset): Change type to uint64_t. diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c index 693d7e3..2ff0f4d 100644 --- a/gdb/arch-utils.c +++ b/gdb/arch-utils.c @@ -813,12 +813,12 @@ default_has_shared_address_space (struct gdbarch *gdbarch) int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, - char **msg) + std::string *msg) { /* We don't know if maybe the target has some way to do fast tracepoints that doesn't need gdbarch, so always say yes. */ if (msg) - *msg = NULL; + msg->clear (); return 1; } diff --git a/gdb/arch-utils.h b/gdb/arch-utils.h index b51a4ec..3407a16 100644 --- a/gdb/arch-utils.h +++ b/gdb/arch-utils.h @@ -202,7 +202,7 @@ extern struct gdbarch *get_current_arch (void); extern int default_has_shared_address_space (struct gdbarch *); extern int default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, - CORE_ADDR addr, char **msg); + CORE_ADDR addr, std::string *msg); extern const gdb_byte *default_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c index 91ecca6..c56084c 100644 --- a/gdb/breakpoint.c +++ b/gdb/breakpoint.c @@ -9177,10 +9177,6 @@ static void check_fast_tracepoint_sals (struct gdbarch *gdbarch, gdb::array_view sals) { - int rslt; - char *msg; - struct cleanup *old_chain; - for (const auto &sal : sals) { struct gdbarch *sarch; @@ -9190,14 +9186,10 @@ check_fast_tracepoint_sals (struct gdbarch *gdbarch, associated with SAL. */ if (sarch == NULL) sarch = gdbarch; - rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); - old_chain = make_cleanup (xfree, msg); - - if (!rslt) + std::string msg; + if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) error (_("May not have a fast tracepoint at %s%s"), - paddress (sarch, sal.pc), (msg ? msg : "")); - - do_cleanups (old_chain); + paddress (sarch, sal.pc), msg.c_str ()); } } diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index 62cb9a5..b8703e5 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -4650,7 +4650,7 @@ set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, } int -gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg) +gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, std::string *msg) { gdb_assert (gdbarch != NULL); gdb_assert (gdbarch->fast_tracepoint_valid_at != NULL); diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index 30c2bf3..5cb131d 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -1366,8 +1366,8 @@ extern void set_gdbarch_has_shared_address_space (struct gdbarch *gdbarch, gdbar /* True if a fast tracepoint can be set at an address. */ -typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg); -extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, char **msg); +typedef int (gdbarch_fast_tracepoint_valid_at_ftype) (struct gdbarch *gdbarch, CORE_ADDR addr, std::string *msg); +extern int gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, std::string *msg); extern void set_gdbarch_fast_tracepoint_valid_at (struct gdbarch *gdbarch, gdbarch_fast_tracepoint_valid_at_ftype *fast_tracepoint_valid_at); /* Guess register state based on tracepoint location. Used for tracepoints diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 10a2aa9..33dfa6b 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -1045,7 +1045,7 @@ v;int;has_global_breakpoints;;;0;0;;0 m;int;has_shared_address_space;void;;;default_has_shared_address_space;;0 # True if a fast tracepoint can be set at an address. -m;int;fast_tracepoint_valid_at;CORE_ADDR addr, char **msg;addr, msg;;default_fast_tracepoint_valid_at;;0 +m;int;fast_tracepoint_valid_at;CORE_ADDR addr, std::string *msg;addr, msg;;default_fast_tracepoint_valid_at;;0 # Guess register state based on tracepoint location. Used for tracepoints # where no registers have been collected, but there's only one location, diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c index 6b59278..60dc801 100644 --- a/gdb/i386-tdep.c +++ b/gdb/i386-tdep.c @@ -8111,7 +8111,7 @@ static const int i386_record_regmap[] = static int i386_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, - char **msg) + std::string *msg) { int len, jumplen; @@ -8144,15 +8144,15 @@ i386_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, /* Return a bit of target-specific detail to add to the caller's generic failure message. */ if (msg) - *msg = xstrprintf (_("; instruction is only %d bytes long, " - "need at least %d bytes for the jump"), - len, jumplen); + *msg = string_printf (_("; instruction is only %d bytes long, " + "need at least %d bytes for the jump"), + len, jumplen); return 0; } else { if (msg) - *msg = NULL; + msg->clear (); return 1; } } -- cgit v1.1