X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2FNEWS;h=cef558039ed3149c1bdd8e8838d8763c9c31ff45;hb=10b2ded43caa3298cded1df8b620caaaee3f9209;hp=984fd965ce1e3a7df0591b7b1b9d7f509e457374;hpb=a20714ff39f621961151d0c204e89062ab2107eb;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/NEWS b/gdb/NEWS index 984fd965ce..cef558039e 100644 --- a/gdb/NEWS +++ b/gdb/NEWS @@ -1,7 +1,76 @@ What has changed in GDB? (Organized release by release) -*** Changes since GDB 8.0 +*** Changes since GDB 8.1 + +* The commands 'info variables/functions/types' now show the source line + numbers of symbol definitions when available. + +* 'info proc' now works on running processes on FreeBSD systems and core + files created on FreeBSD systems. + +* C expressions can now use _Alignof, and C++ expressions can now use + alignof. + +* New commands + +set debug fbsd-nat +show debug fbsd-nat + Control display of debugging info regarding the FreeBSD native target. + +set|show varsize-limit + This new setting allows the user to control the maximum size of Ada + objects being printed when those objects have a variable type, + instead of that maximum size being hardcoded to 65536 bytes. + +set|show record btrace cpu + Controls the processor to be used for enabling errata workarounds for + branch trace decode. + +* Python API + + ** Type alignment is now exposed via the "align" attribute of a gdb.Type. + + ** The commands attached to a breakpoint can be set by assigning to + the breakpoint's "commands" field. + + ** gdb.execute can now execute multi-line gdb commands. + +* New targets + +RiscV ELF riscv*-*-elf + +* Removed targets and native configurations + +m88k running OpenBSD m88*-*-openbsd* +SH-5/SH64 ELF sh64-*-elf*, SH-5/SH64 support in sh* +SH-5/SH64 running GNU/Linux SH-5/SH64 support in sh*-*-linux* +SH-5/SH64 running OpenBSD SH-5/SH64 support in sh*-*-openbsd* + +* Aarch64/Linux hardware watchpoints improvements + + Hardware watchpoints on unaligned addresses are now properly + supported when running Linux kernel 4.10 or higher: read and access + watchpoints are no longer spuriously missed, and all watchpoints + lengths between 1 and 8 bytes are supported. On older kernels, + watchpoints set on unaligned addresses are no longer missed, with + the tradeoff that there is a possibility of false hits being + reported. + +*** Changes in GDB 8.1 + +* GDB now supports dynamically creating arbitrary register groups specified + in XML target descriptions. This allows for finer grain grouping of + registers on systems with a large amount of registers. + +* The 'ptype' command now accepts a '/o' flag, which prints the + offsets and sizes of fields in a struct, like the pahole(1) tool. + +* New "--readnever" command line option instructs GDB to not read each + symbol file's symbolic debug information. This makes startup faster + but at the expense of not being able to perform symbolic debugging. + This option is intended for use cases where symbolic debugging will + not be used, e.g., when you only need to dump the debuggee's core. * GDB now uses the GNU MPFR library, if available, to emulate target floating-point arithmetic during expression evaluation when the target @@ -52,6 +121,11 @@ ** The "complete" command now mimics TAB completion accurately. +* New command line options (gcore) + +-a + Dump all memory mappings. + * Breakpoints on C++ functions are now set on all scopes by default By default, breakpoints on functions/methods are now interpreted as @@ -70,7 +144,31 @@ GDB interpret the specified function name as a complete fully-qualified name instead. For example, using the same C++ program, the "break -q B::func" command sets a breakpoint on - "B::func", only. + "B::func", only. A parameter has been added to the Python + gdb.Breakpoint constructor to achieve the same result when creating + a breakpoint from Python. + +* Breakpoints on functions marked with C++ ABI tags + + GDB can now set breakpoints on functions marked with C++ ABI tags + (e.g., [abi:cxx11]). See here for a description of ABI tags: + https://developers.redhat.com/blog/2015/02/05/gcc5-and-the-c11-abi/ + + Functions with a C++11 abi tag are demangled/displayed like this: + + function[abi:cxx11](int) + ^^^^^^^^^^^ + + You can now set a breakpoint on such functions simply as if they had + no tag, like: + + (gdb) b function(int) + + Or if you need to disambiguate between tags, like: + + (gdb) b function[abi:other_tag](int) + + Tab completion was adjusted accordingly as well. * Python Scripting @@ -78,9 +176,13 @@ gdb.new_thread are emitted. See the manual for further description of these. - ** A new command, "rbreak" has been added to the Python API. This - command allows the setting of a large number of breakpoints via a - regex pattern in Python. See the manual for further details. + ** A new function, "gdb.rbreak" has been added to the Python API. + This function allows the setting of a large number of breakpoints + via a regex pattern in Python. See the manual for further details. + + ** Python breakpoints can now accept explicit locations. See the + manual for a further description of this feature. + * New features in the GDB remote stub, GDBserver @@ -111,6 +213,9 @@ information is provided as an extra field named "exception-message" in the *stopped notification. +* Trait objects can now be inspected When debugging Rust code. This + requires compiler support which will appear in Rust 1.24. + * New remote packets QEnvironmentHexEncoded @@ -154,12 +259,24 @@ set debug separate-debug-file show debug separate-debug-file Control the display of debug output about separate debug file search. +set dump-excluded-mappings +show dump-excluded-mappings + Control whether mappings marked with the VM_DONTDUMP flag should be + dumped when generating a core file. + maint info selftests List the registered selftests. starti Start the debugged program stopping at the first instruction. +set|show debug or1k + Control display of debugging messages related to OpenRISC targets. + +set|show print type nested-type-limit + Set and show the limit of nesting level for nested types that the + type printer will show. + * TUI Single-Key mode now supports two new shortcut keys: `i' for stepi and `o' for nexti. @@ -198,6 +315,7 @@ FreeBSD/arm arm*-*-freebsd* FreeBSD/aarch64 aarch64*-*-freebsd* FreeBSD/arm arm*-*-freebsd* +OpenRISC ELF or1k*-*-elf * Removed targets and native configurations @@ -310,6 +428,10 @@ show disassembler-options List the shared libraries in the program. This is equivalent to the CLI command "info shared". +-catch-handlers + Catchpoints stopping the program when Ada exceptions are + handled. This is equivalent to the CLI command "catch handlers". + *** Changes in GDB 7.12 * GDB and GDBserver now build with a C++ compiler by default. @@ -607,6 +729,9 @@ show max-value-size * Support for reading/writing memory and extracting values on architectures whose memory is addressable in units of any integral multiple of 8 bits. +catch handlers + Allows to break when an Ada exception is handled. + * New remote packets exec stop reason