binutils-gdb/gdbserver/regcache.cc
Simon Marchi dda83cd783 gdb, gdbserver, gdbsupport: fix leading space vs tabs issues
Many spots incorrectly use only spaces for indentation (for example,
there are a lot of spots in ada-lang.c).  I've always found it awkward
when I needed to edit one of these spots: do I keep the original wrong
indentation, or do I fix it?  What if the lines around it are also
wrong, do I fix them too?  I probably don't want to fix them in the same
patch, to avoid adding noise to my patch.

So I propose to fix as much as possible once and for all (hopefully).

One typical counter argument for this is that it makes code archeology
more difficult, because git-blame will show this commit as the last
change for these lines.  My counter counter argument is: when
git-blaming, you often need to do "blame the file at the parent commit"
anyway, to go past some other refactor that touched the line you are
interested in, but is not the change you are looking for.  So you
already need a somewhat efficient way to do this.

Using some interactive tool, rather than plain git-blame, makes this
trivial.  For example, I use "tig blame <file>", where going back past
the commit that changed the currently selected line is one keystroke.
It looks like Magit in Emacs does it too (though I've never used it).
Web viewers of Github and Gitlab do it too.  My point is that it won't
really make archeology more difficult.

The other typical counter argument is that it will cause conflicts with
existing patches.  That's true... but it's a one time cost, and those
are not conflicts that are difficult to resolve.  I have also tried "git
rebase --ignore-whitespace", it seems to work well.  Although that will
re-introduce the faulty indentation, so one needs to take care of fixing
the indentation in the patch after that (which is easy).

gdb/ChangeLog:

	* aarch64-linux-tdep.c: Fix indentation.
	* aarch64-ravenscar-thread.c: Fix indentation.
	* aarch64-tdep.c: Fix indentation.
	* aarch64-tdep.h: Fix indentation.
	* ada-lang.c: Fix indentation.
	* ada-lang.h: Fix indentation.
	* ada-tasks.c: Fix indentation.
	* ada-typeprint.c: Fix indentation.
	* ada-valprint.c: Fix indentation.
	* ada-varobj.c: Fix indentation.
	* addrmap.c: Fix indentation.
	* addrmap.h: Fix indentation.
	* agent.c: Fix indentation.
	* aix-thread.c: Fix indentation.
	* alpha-bsd-nat.c: Fix indentation.
	* alpha-linux-tdep.c: Fix indentation.
	* alpha-mdebug-tdep.c: Fix indentation.
	* alpha-nbsd-tdep.c: Fix indentation.
	* alpha-obsd-tdep.c: Fix indentation.
	* alpha-tdep.c: Fix indentation.
	* amd64-bsd-nat.c: Fix indentation.
	* amd64-darwin-tdep.c: Fix indentation.
	* amd64-linux-nat.c: Fix indentation.
	* amd64-linux-tdep.c: Fix indentation.
	* amd64-nat.c: Fix indentation.
	* amd64-obsd-tdep.c: Fix indentation.
	* amd64-tdep.c: Fix indentation.
	* amd64-windows-tdep.c: Fix indentation.
	* annotate.c: Fix indentation.
	* arc-tdep.c: Fix indentation.
	* arch-utils.c: Fix indentation.
	* arch/arm-get-next-pcs.c: Fix indentation.
	* arch/arm.c: Fix indentation.
	* arm-linux-nat.c: Fix indentation.
	* arm-linux-tdep.c: Fix indentation.
	* arm-nbsd-tdep.c: Fix indentation.
	* arm-pikeos-tdep.c: Fix indentation.
	* arm-tdep.c: Fix indentation.
	* arm-tdep.h: Fix indentation.
	* arm-wince-tdep.c: Fix indentation.
	* auto-load.c: Fix indentation.
	* auxv.c: Fix indentation.
	* avr-tdep.c: Fix indentation.
	* ax-gdb.c: Fix indentation.
	* ax-general.c: Fix indentation.
	* bfin-linux-tdep.c: Fix indentation.
	* block.c: Fix indentation.
	* block.h: Fix indentation.
	* blockframe.c: Fix indentation.
	* bpf-tdep.c: Fix indentation.
	* break-catch-sig.c: Fix indentation.
	* break-catch-syscall.c: Fix indentation.
	* break-catch-throw.c: Fix indentation.
	* breakpoint.c: Fix indentation.
	* breakpoint.h: Fix indentation.
	* bsd-uthread.c: Fix indentation.
	* btrace.c: Fix indentation.
	* build-id.c: Fix indentation.
	* buildsym-legacy.h: Fix indentation.
	* buildsym.c: Fix indentation.
	* c-typeprint.c: Fix indentation.
	* c-valprint.c: Fix indentation.
	* c-varobj.c: Fix indentation.
	* charset.c: Fix indentation.
	* cli/cli-cmds.c: Fix indentation.
	* cli/cli-decode.c: Fix indentation.
	* cli/cli-decode.h: Fix indentation.
	* cli/cli-script.c: Fix indentation.
	* cli/cli-setshow.c: Fix indentation.
	* coff-pe-read.c: Fix indentation.
	* coffread.c: Fix indentation.
	* compile/compile-cplus-types.c: Fix indentation.
	* compile/compile-object-load.c: Fix indentation.
	* compile/compile-object-run.c: Fix indentation.
	* completer.c: Fix indentation.
	* corefile.c: Fix indentation.
	* corelow.c: Fix indentation.
	* cp-abi.h: Fix indentation.
	* cp-namespace.c: Fix indentation.
	* cp-support.c: Fix indentation.
	* cp-valprint.c: Fix indentation.
	* cris-linux-tdep.c: Fix indentation.
	* cris-tdep.c: Fix indentation.
	* darwin-nat-info.c: Fix indentation.
	* darwin-nat.c: Fix indentation.
	* darwin-nat.h: Fix indentation.
	* dbxread.c: Fix indentation.
	* dcache.c: Fix indentation.
	* disasm.c: Fix indentation.
	* dtrace-probe.c: Fix indentation.
	* dwarf2/abbrev.c: Fix indentation.
	* dwarf2/attribute.c: Fix indentation.
	* dwarf2/expr.c: Fix indentation.
	* dwarf2/frame.c: Fix indentation.
	* dwarf2/index-cache.c: Fix indentation.
	* dwarf2/index-write.c: Fix indentation.
	* dwarf2/line-header.c: Fix indentation.
	* dwarf2/loc.c: Fix indentation.
	* dwarf2/macro.c: Fix indentation.
	* dwarf2/read.c: Fix indentation.
	* dwarf2/read.h: Fix indentation.
	* elfread.c: Fix indentation.
	* eval.c: Fix indentation.
	* event-top.c: Fix indentation.
	* exec.c: Fix indentation.
	* exec.h: Fix indentation.
	* expprint.c: Fix indentation.
	* f-lang.c: Fix indentation.
	* f-typeprint.c: Fix indentation.
	* f-valprint.c: Fix indentation.
	* fbsd-nat.c: Fix indentation.
	* fbsd-tdep.c: Fix indentation.
	* findvar.c: Fix indentation.
	* fork-child.c: Fix indentation.
	* frame-unwind.c: Fix indentation.
	* frame-unwind.h: Fix indentation.
	* frame.c: Fix indentation.
	* frv-linux-tdep.c: Fix indentation.
	* frv-tdep.c: Fix indentation.
	* frv-tdep.h: Fix indentation.
	* ft32-tdep.c: Fix indentation.
	* gcore.c: Fix indentation.
	* gdb_bfd.c: Fix indentation.
	* gdbarch.sh: Fix indentation.
	* gdbarch.c: Re-generate
	* gdbarch.h: Re-generate.
	* gdbcore.h: Fix indentation.
	* gdbthread.h: Fix indentation.
	* gdbtypes.c: Fix indentation.
	* gdbtypes.h: Fix indentation.
	* glibc-tdep.c: Fix indentation.
	* gnu-nat.c: Fix indentation.
	* gnu-nat.h: Fix indentation.
	* gnu-v2-abi.c: Fix indentation.
	* gnu-v3-abi.c: Fix indentation.
	* go32-nat.c: Fix indentation.
	* guile/guile-internal.h: Fix indentation.
	* guile/scm-cmd.c: Fix indentation.
	* guile/scm-frame.c: Fix indentation.
	* guile/scm-iterator.c: Fix indentation.
	* guile/scm-math.c: Fix indentation.
	* guile/scm-ports.c: Fix indentation.
	* guile/scm-pretty-print.c: Fix indentation.
	* guile/scm-value.c: Fix indentation.
	* h8300-tdep.c: Fix indentation.
	* hppa-linux-nat.c: Fix indentation.
	* hppa-linux-tdep.c: Fix indentation.
	* hppa-nbsd-nat.c: Fix indentation.
	* hppa-nbsd-tdep.c: Fix indentation.
	* hppa-obsd-nat.c: Fix indentation.
	* hppa-tdep.c: Fix indentation.
	* hppa-tdep.h: Fix indentation.
	* i386-bsd-nat.c: Fix indentation.
	* i386-darwin-nat.c: Fix indentation.
	* i386-darwin-tdep.c: Fix indentation.
	* i386-dicos-tdep.c: Fix indentation.
	* i386-gnu-nat.c: Fix indentation.
	* i386-linux-nat.c: Fix indentation.
	* i386-linux-tdep.c: Fix indentation.
	* i386-nto-tdep.c: Fix indentation.
	* i386-obsd-tdep.c: Fix indentation.
	* i386-sol2-nat.c: Fix indentation.
	* i386-tdep.c: Fix indentation.
	* i386-tdep.h: Fix indentation.
	* i386-windows-tdep.c: Fix indentation.
	* i387-tdep.c: Fix indentation.
	* i387-tdep.h: Fix indentation.
	* ia64-libunwind-tdep.c: Fix indentation.
	* ia64-libunwind-tdep.h: Fix indentation.
	* ia64-linux-nat.c: Fix indentation.
	* ia64-linux-tdep.c: Fix indentation.
	* ia64-tdep.c: Fix indentation.
	* ia64-tdep.h: Fix indentation.
	* ia64-vms-tdep.c: Fix indentation.
	* infcall.c: Fix indentation.
	* infcmd.c: Fix indentation.
	* inferior.c: Fix indentation.
	* infrun.c: Fix indentation.
	* iq2000-tdep.c: Fix indentation.
	* language.c: Fix indentation.
	* linespec.c: Fix indentation.
	* linux-fork.c: Fix indentation.
	* linux-nat.c: Fix indentation.
	* linux-tdep.c: Fix indentation.
	* linux-thread-db.c: Fix indentation.
	* lm32-tdep.c: Fix indentation.
	* m2-lang.c: Fix indentation.
	* m2-typeprint.c: Fix indentation.
	* m2-valprint.c: Fix indentation.
	* m32c-tdep.c: Fix indentation.
	* m32r-linux-tdep.c: Fix indentation.
	* m32r-tdep.c: Fix indentation.
	* m68hc11-tdep.c: Fix indentation.
	* m68k-bsd-nat.c: Fix indentation.
	* m68k-linux-nat.c: Fix indentation.
	* m68k-linux-tdep.c: Fix indentation.
	* m68k-tdep.c: Fix indentation.
	* machoread.c: Fix indentation.
	* macrocmd.c: Fix indentation.
	* macroexp.c: Fix indentation.
	* macroscope.c: Fix indentation.
	* macrotab.c: Fix indentation.
	* macrotab.h: Fix indentation.
	* main.c: Fix indentation.
	* mdebugread.c: Fix indentation.
	* mep-tdep.c: Fix indentation.
	* mi/mi-cmd-catch.c: Fix indentation.
	* mi/mi-cmd-disas.c: Fix indentation.
	* mi/mi-cmd-env.c: Fix indentation.
	* mi/mi-cmd-stack.c: Fix indentation.
	* mi/mi-cmd-var.c: Fix indentation.
	* mi/mi-cmds.c: Fix indentation.
	* mi/mi-main.c: Fix indentation.
	* mi/mi-parse.c: Fix indentation.
	* microblaze-tdep.c: Fix indentation.
	* minidebug.c: Fix indentation.
	* minsyms.c: Fix indentation.
	* mips-linux-nat.c: Fix indentation.
	* mips-linux-tdep.c: Fix indentation.
	* mips-nbsd-tdep.c: Fix indentation.
	* mips-tdep.c: Fix indentation.
	* mn10300-linux-tdep.c: Fix indentation.
	* mn10300-tdep.c: Fix indentation.
	* moxie-tdep.c: Fix indentation.
	* msp430-tdep.c: Fix indentation.
	* namespace.h: Fix indentation.
	* nat/fork-inferior.c: Fix indentation.
	* nat/gdb_ptrace.h: Fix indentation.
	* nat/linux-namespaces.c: Fix indentation.
	* nat/linux-osdata.c: Fix indentation.
	* nat/netbsd-nat.c: Fix indentation.
	* nat/x86-dregs.c: Fix indentation.
	* nbsd-nat.c: Fix indentation.
	* nbsd-tdep.c: Fix indentation.
	* nios2-linux-tdep.c: Fix indentation.
	* nios2-tdep.c: Fix indentation.
	* nto-procfs.c: Fix indentation.
	* nto-tdep.c: Fix indentation.
	* objfiles.c: Fix indentation.
	* objfiles.h: Fix indentation.
	* opencl-lang.c: Fix indentation.
	* or1k-tdep.c: Fix indentation.
	* osabi.c: Fix indentation.
	* osabi.h: Fix indentation.
	* osdata.c: Fix indentation.
	* p-lang.c: Fix indentation.
	* p-typeprint.c: Fix indentation.
	* p-valprint.c: Fix indentation.
	* parse.c: Fix indentation.
	* ppc-linux-nat.c: Fix indentation.
	* ppc-linux-tdep.c: Fix indentation.
	* ppc-nbsd-nat.c: Fix indentation.
	* ppc-nbsd-tdep.c: Fix indentation.
	* ppc-obsd-nat.c: Fix indentation.
	* ppc-ravenscar-thread.c: Fix indentation.
	* ppc-sysv-tdep.c: Fix indentation.
	* ppc64-tdep.c: Fix indentation.
	* printcmd.c: Fix indentation.
	* proc-api.c: Fix indentation.
	* producer.c: Fix indentation.
	* producer.h: Fix indentation.
	* prologue-value.c: Fix indentation.
	* prologue-value.h: Fix indentation.
	* psymtab.c: Fix indentation.
	* python/py-arch.c: Fix indentation.
	* python/py-bpevent.c: Fix indentation.
	* python/py-event.c: Fix indentation.
	* python/py-event.h: Fix indentation.
	* python/py-finishbreakpoint.c: Fix indentation.
	* python/py-frame.c: Fix indentation.
	* python/py-framefilter.c: Fix indentation.
	* python/py-inferior.c: Fix indentation.
	* python/py-infthread.c: Fix indentation.
	* python/py-objfile.c: Fix indentation.
	* python/py-prettyprint.c: Fix indentation.
	* python/py-registers.c: Fix indentation.
	* python/py-signalevent.c: Fix indentation.
	* python/py-stopevent.c: Fix indentation.
	* python/py-stopevent.h: Fix indentation.
	* python/py-threadevent.c: Fix indentation.
	* python/py-tui.c: Fix indentation.
	* python/py-unwind.c: Fix indentation.
	* python/py-value.c: Fix indentation.
	* python/py-xmethods.c: Fix indentation.
	* python/python-internal.h: Fix indentation.
	* python/python.c: Fix indentation.
	* ravenscar-thread.c: Fix indentation.
	* record-btrace.c: Fix indentation.
	* record-full.c: Fix indentation.
	* record.c: Fix indentation.
	* reggroups.c: Fix indentation.
	* regset.h: Fix indentation.
	* remote-fileio.c: Fix indentation.
	* remote.c: Fix indentation.
	* reverse.c: Fix indentation.
	* riscv-linux-tdep.c: Fix indentation.
	* riscv-ravenscar-thread.c: Fix indentation.
	* riscv-tdep.c: Fix indentation.
	* rl78-tdep.c: Fix indentation.
	* rs6000-aix-tdep.c: Fix indentation.
	* rs6000-lynx178-tdep.c: Fix indentation.
	* rs6000-nat.c: Fix indentation.
	* rs6000-tdep.c: Fix indentation.
	* rust-lang.c: Fix indentation.
	* rx-tdep.c: Fix indentation.
	* s12z-tdep.c: Fix indentation.
	* s390-linux-tdep.c: Fix indentation.
	* score-tdep.c: Fix indentation.
	* ser-base.c: Fix indentation.
	* ser-mingw.c: Fix indentation.
	* ser-uds.c: Fix indentation.
	* ser-unix.c: Fix indentation.
	* serial.c: Fix indentation.
	* sh-linux-tdep.c: Fix indentation.
	* sh-nbsd-tdep.c: Fix indentation.
	* sh-tdep.c: Fix indentation.
	* skip.c: Fix indentation.
	* sol-thread.c: Fix indentation.
	* solib-aix.c: Fix indentation.
	* solib-darwin.c: Fix indentation.
	* solib-frv.c: Fix indentation.
	* solib-svr4.c: Fix indentation.
	* solib.c: Fix indentation.
	* source.c: Fix indentation.
	* sparc-linux-tdep.c: Fix indentation.
	* sparc-nbsd-tdep.c: Fix indentation.
	* sparc-obsd-tdep.c: Fix indentation.
	* sparc-ravenscar-thread.c: Fix indentation.
	* sparc-tdep.c: Fix indentation.
	* sparc64-linux-tdep.c: Fix indentation.
	* sparc64-nbsd-tdep.c: Fix indentation.
	* sparc64-obsd-tdep.c: Fix indentation.
	* sparc64-tdep.c: Fix indentation.
	* stabsread.c: Fix indentation.
	* stack.c: Fix indentation.
	* stap-probe.c: Fix indentation.
	* stubs/ia64vms-stub.c: Fix indentation.
	* stubs/m32r-stub.c: Fix indentation.
	* stubs/m68k-stub.c: Fix indentation.
	* stubs/sh-stub.c: Fix indentation.
	* stubs/sparc-stub.c: Fix indentation.
	* symfile-mem.c: Fix indentation.
	* symfile.c: Fix indentation.
	* symfile.h: Fix indentation.
	* symmisc.c: Fix indentation.
	* symtab.c: Fix indentation.
	* symtab.h: Fix indentation.
	* target-float.c: Fix indentation.
	* target.c: Fix indentation.
	* target.h: Fix indentation.
	* tic6x-tdep.c: Fix indentation.
	* tilegx-linux-tdep.c: Fix indentation.
	* tilegx-tdep.c: Fix indentation.
	* top.c: Fix indentation.
	* tracefile-tfile.c: Fix indentation.
	* tracepoint.c: Fix indentation.
	* tui/tui-disasm.c: Fix indentation.
	* tui/tui-io.c: Fix indentation.
	* tui/tui-regs.c: Fix indentation.
	* tui/tui-stack.c: Fix indentation.
	* tui/tui-win.c: Fix indentation.
	* tui/tui-winsource.c: Fix indentation.
	* tui/tui.c: Fix indentation.
	* typeprint.c: Fix indentation.
	* ui-out.h: Fix indentation.
	* unittests/copy_bitwise-selftests.c: Fix indentation.
	* unittests/memory-map-selftests.c: Fix indentation.
	* utils.c: Fix indentation.
	* v850-tdep.c: Fix indentation.
	* valarith.c: Fix indentation.
	* valops.c: Fix indentation.
	* valprint.c: Fix indentation.
	* valprint.h: Fix indentation.
	* value.c: Fix indentation.
	* value.h: Fix indentation.
	* varobj.c: Fix indentation.
	* vax-tdep.c: Fix indentation.
	* windows-nat.c: Fix indentation.
	* windows-tdep.c: Fix indentation.
	* xcoffread.c: Fix indentation.
	* xml-syscall.c: Fix indentation.
	* xml-tdesc.c: Fix indentation.
	* xstormy16-tdep.c: Fix indentation.
	* xtensa-config.c: Fix indentation.
	* xtensa-linux-nat.c: Fix indentation.
	* xtensa-linux-tdep.c: Fix indentation.
	* xtensa-tdep.c: Fix indentation.

gdbserver/ChangeLog:

	* ax.cc: Fix indentation.
	* dll.cc: Fix indentation.
	* inferiors.h: Fix indentation.
	* linux-low.cc: Fix indentation.
	* linux-nios2-low.cc: Fix indentation.
	* linux-ppc-ipa.cc: Fix indentation.
	* linux-ppc-low.cc: Fix indentation.
	* linux-x86-low.cc: Fix indentation.
	* linux-xtensa-low.cc: Fix indentation.
	* regcache.cc: Fix indentation.
	* server.cc: Fix indentation.
	* tracepoint.cc: Fix indentation.

gdbsupport/ChangeLog:

	* common-exceptions.h: Fix indentation.
	* event-loop.cc: Fix indentation.
	* fileio.cc: Fix indentation.
	* filestuff.cc: Fix indentation.
	* gdb-dlfcn.cc: Fix indentation.
	* gdb_string_view.h: Fix indentation.
	* job-control.cc: Fix indentation.
	* signals.cc: Fix indentation.

Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695
2020-11-02 10:28:45 -05:00

517 lines
12 KiB
C++

/* Register support routines for the remote server for GDB.
Copyright (C) 2001-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "regdef.h"
#include "gdbthread.h"
#include "tdesc.h"
#include "gdbsupport/rsp-low.h"
#ifndef IN_PROCESS_AGENT
struct regcache *
get_thread_regcache (struct thread_info *thread, int fetch)
{
struct regcache *regcache;
regcache = thread_regcache_data (thread);
/* Threads' regcaches are created lazily, because biarch targets add
the main thread/lwp before seeing it stop for the first time, and
it is only after the target sees the thread stop for the first
time that the target has a chance of determining the process's
architecture. IOW, when we first add the process's main thread
we don't know which architecture/tdesc its regcache should
have. */
if (regcache == NULL)
{
struct process_info *proc = get_thread_process (thread);
gdb_assert (proc->tdesc != NULL);
regcache = new_register_cache (proc->tdesc);
set_thread_regcache_data (thread, regcache);
}
if (fetch && regcache->registers_valid == 0)
{
struct thread_info *saved_thread = current_thread;
current_thread = thread;
/* Invalidate all registers, to prevent stale left-overs. */
memset (regcache->register_status, REG_UNAVAILABLE,
regcache->tdesc->reg_defs.size ());
fetch_inferior_registers (regcache, -1);
current_thread = saved_thread;
regcache->registers_valid = 1;
}
return regcache;
}
/* See gdbsupport/common-regcache.h. */
struct regcache *
get_thread_regcache_for_ptid (ptid_t ptid)
{
return get_thread_regcache (find_thread_ptid (ptid), 1);
}
void
regcache_invalidate_thread (struct thread_info *thread)
{
struct regcache *regcache;
regcache = thread_regcache_data (thread);
if (regcache == NULL)
return;
if (regcache->registers_valid)
{
struct thread_info *saved_thread = current_thread;
current_thread = thread;
store_inferior_registers (regcache, -1);
current_thread = saved_thread;
}
regcache->registers_valid = 0;
}
/* See regcache.h. */
void
regcache_invalidate_pid (int pid)
{
/* Only invalidate the regcaches of threads of this process. */
for_each_thread (pid, regcache_invalidate_thread);
}
/* See regcache.h. */
void
regcache_invalidate (void)
{
/* Only update the threads of the current process. */
int pid = current_thread->id.pid ();
regcache_invalidate_pid (pid);
}
#endif
struct regcache *
init_register_cache (struct regcache *regcache,
const struct target_desc *tdesc,
unsigned char *regbuf)
{
if (regbuf == NULL)
{
#ifndef IN_PROCESS_AGENT
/* Make sure to zero-initialize the register cache when it is
created, in case there are registers the target never
fetches. This way they'll read as zero instead of
garbage. */
regcache->tdesc = tdesc;
regcache->registers
= (unsigned char *) xcalloc (1, tdesc->registers_size);
regcache->registers_owned = 1;
regcache->register_status
= (unsigned char *) xmalloc (tdesc->reg_defs.size ());
memset ((void *) regcache->register_status, REG_UNAVAILABLE,
tdesc->reg_defs.size ());
#else
gdb_assert_not_reached ("can't allocate memory from the heap");
#endif
}
else
{
regcache->tdesc = tdesc;
regcache->registers = regbuf;
regcache->registers_owned = 0;
#ifndef IN_PROCESS_AGENT
regcache->register_status = NULL;
#endif
}
regcache->registers_valid = 0;
return regcache;
}
#ifndef IN_PROCESS_AGENT
struct regcache *
new_register_cache (const struct target_desc *tdesc)
{
struct regcache *regcache = new struct regcache;
gdb_assert (tdesc->registers_size != 0);
return init_register_cache (regcache, tdesc, NULL);
}
void
free_register_cache (struct regcache *regcache)
{
if (regcache)
{
if (regcache->registers_owned)
free (regcache->registers);
free (regcache->register_status);
delete regcache;
}
}
#endif
void
regcache_cpy (struct regcache *dst, struct regcache *src)
{
gdb_assert (src != NULL && dst != NULL);
gdb_assert (src->tdesc == dst->tdesc);
gdb_assert (src != dst);
memcpy (dst->registers, src->registers, src->tdesc->registers_size);
#ifndef IN_PROCESS_AGENT
if (dst->register_status != NULL && src->register_status != NULL)
memcpy (dst->register_status, src->register_status,
src->tdesc->reg_defs.size ());
#endif
dst->registers_valid = src->registers_valid;
}
/* Return a reference to the description of register N. */
static const struct gdb::reg &
find_register_by_number (const struct target_desc *tdesc, int n)
{
return tdesc->reg_defs[n];
}
#ifndef IN_PROCESS_AGENT
void
registers_to_string (struct regcache *regcache, char *buf)
{
unsigned char *registers = regcache->registers;
const struct target_desc *tdesc = regcache->tdesc;
for (int i = 0; i < tdesc->reg_defs.size (); ++i)
{
if (regcache->register_status[i] == REG_VALID)
{
bin2hex (registers, buf, register_size (tdesc, i));
buf += register_size (tdesc, i) * 2;
}
else
{
memset (buf, 'x', register_size (tdesc, i) * 2);
buf += register_size (tdesc, i) * 2;
}
registers += register_size (tdesc, i);
}
*buf = '\0';
}
void
registers_from_string (struct regcache *regcache, char *buf)
{
int len = strlen (buf);
unsigned char *registers = regcache->registers;
const struct target_desc *tdesc = regcache->tdesc;
if (len != tdesc->registers_size * 2)
{
warning ("Wrong sized register packet (expected %d bytes, got %d)",
2 * tdesc->registers_size, len);
if (len > tdesc->registers_size * 2)
len = tdesc->registers_size * 2;
}
hex2bin (buf, registers, len / 2);
}
int
find_regno (const struct target_desc *tdesc, const char *name)
{
for (int i = 0; i < tdesc->reg_defs.size (); ++i)
{
if (strcmp (name, find_register_by_number (tdesc, i).name) == 0)
return i;
}
internal_error (__FILE__, __LINE__, "Unknown register %s requested",
name);
}
static void
free_register_cache_thread (struct thread_info *thread)
{
struct regcache *regcache = thread_regcache_data (thread);
if (regcache != NULL)
{
regcache_invalidate_thread (thread);
free_register_cache (regcache);
set_thread_regcache_data (thread, NULL);
}
}
void
regcache_release (void)
{
/* Flush and release all pre-existing register caches. */
for_each_thread (free_register_cache_thread);
}
#endif
int
register_cache_size (const struct target_desc *tdesc)
{
return tdesc->registers_size;
}
int
register_size (const struct target_desc *tdesc, int n)
{
return find_register_by_number (tdesc, n).size / 8;
}
/* See gdbsupport/common-regcache.h. */
int
regcache_register_size (const struct regcache *regcache, int n)
{
return register_size (regcache->tdesc, n);
}
static unsigned char *
register_data (const struct regcache *regcache, int n)
{
return (regcache->registers
+ find_register_by_number (regcache->tdesc, n).offset / 8);
}
void
supply_register (struct regcache *regcache, int n, const void *buf)
{
return regcache->raw_supply (n, buf);
}
/* See gdbsupport/common-regcache.h. */
void
regcache::raw_supply (int n, const void *buf)
{
if (buf)
{
memcpy (register_data (this, n), buf, register_size (tdesc, n));
#ifndef IN_PROCESS_AGENT
if (register_status != NULL)
register_status[n] = REG_VALID;
#endif
}
else
{
memset (register_data (this, n), 0, register_size (tdesc, n));
#ifndef IN_PROCESS_AGENT
if (register_status != NULL)
register_status[n] = REG_UNAVAILABLE;
#endif
}
}
/* Supply register N with value zero to REGCACHE. */
void
supply_register_zeroed (struct regcache *regcache, int n)
{
memset (register_data (regcache, n), 0,
register_size (regcache->tdesc, n));
#ifndef IN_PROCESS_AGENT
if (regcache->register_status != NULL)
regcache->register_status[n] = REG_VALID;
#endif
}
#ifndef IN_PROCESS_AGENT
/* Supply register called NAME with value zero to REGCACHE. */
void
supply_register_by_name_zeroed (struct regcache *regcache,
const char *name)
{
supply_register_zeroed (regcache, find_regno (regcache->tdesc, name));
}
#endif
/* Supply the whole register set whose contents are stored in BUF, to
REGCACHE. If BUF is NULL, all the registers' values are recorded
as unavailable. */
void
supply_regblock (struct regcache *regcache, const void *buf)
{
if (buf)
{
const struct target_desc *tdesc = regcache->tdesc;
memcpy (regcache->registers, buf, tdesc->registers_size);
#ifndef IN_PROCESS_AGENT
{
int i;
for (i = 0; i < tdesc->reg_defs.size (); i++)
regcache->register_status[i] = REG_VALID;
}
#endif
}
else
{
const struct target_desc *tdesc = regcache->tdesc;
memset (regcache->registers, 0, tdesc->registers_size);
#ifndef IN_PROCESS_AGENT
{
int i;
for (i = 0; i < tdesc->reg_defs.size (); i++)
regcache->register_status[i] = REG_UNAVAILABLE;
}
#endif
}
}
#ifndef IN_PROCESS_AGENT
void
supply_register_by_name (struct regcache *regcache,
const char *name, const void *buf)
{
supply_register (regcache, find_regno (regcache->tdesc, name), buf);
}
#endif
void
collect_register (struct regcache *regcache, int n, void *buf)
{
regcache->raw_collect (n, buf);
}
/* See gdbsupport/common-regcache.h. */
void
regcache::raw_collect (int n, void *buf) const
{
memcpy (buf, register_data (this, n), register_size (tdesc, n));
}
enum register_status
regcache_raw_read_unsigned (struct regcache *regcache, int regnum,
ULONGEST *val)
{
int size;
gdb_assert (regcache != NULL);
gdb_assert (regnum >= 0
&& regnum < regcache->tdesc->reg_defs.size ());
size = register_size (regcache->tdesc, regnum);
if (size > (int) sizeof (ULONGEST))
error (_("That operation is not available on integers of more than"
"%d bytes."),
(int) sizeof (ULONGEST));
*val = 0;
collect_register (regcache, regnum, val);
return REG_VALID;
}
#ifndef IN_PROCESS_AGENT
/* See regcache.h. */
ULONGEST
regcache_raw_get_unsigned_by_name (struct regcache *regcache,
const char *name)
{
return regcache_raw_get_unsigned (regcache,
find_regno (regcache->tdesc, name));
}
void
collect_register_as_string (struct regcache *regcache, int n, char *buf)
{
bin2hex (register_data (regcache, n), buf,
register_size (regcache->tdesc, n));
}
void
collect_register_by_name (struct regcache *regcache,
const char *name, void *buf)
{
collect_register (regcache, find_regno (regcache->tdesc, name), buf);
}
/* Special handling for register PC. */
CORE_ADDR
regcache_read_pc (struct regcache *regcache)
{
return the_target->read_pc (regcache);
}
void
regcache_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
the_target->write_pc (regcache, pc);
}
#endif
/* See gdbsupport/common-regcache.h. */
enum register_status
regcache::get_register_status (int regnum) const
{
#ifndef IN_PROCESS_AGENT
gdb_assert (regnum >= 0 && regnum < tdesc->reg_defs.size ());
return (enum register_status) (register_status[regnum]);
#else
return REG_VALID;
#endif
}
/* See gdbsupport/common-regcache.h. */
bool
regcache::raw_compare (int regnum, const void *buf, int offset) const
{
gdb_assert (buf != NULL);
const unsigned char *regbuf = register_data (this, regnum);
int size = register_size (tdesc, regnum);
gdb_assert (size >= offset);
return (memcmp (buf, regbuf + offset, size - offset) == 0);
}