Nowadays, regcache_cpy is used where src is read-only and dst is not
read-only, so the regcache_cpy can be simplified to handle this case only.
As a result, regcache::cpy_no_passthrough, which is about two read-only
regcache copy, is no longer used, remove it as well.
gdb:
2017-07-18 Yao Qi <yao.qi@linaro.org>
* regcache.c (regcache_cpy): Simplify it.
(regcache::cpy_no_passthrough): Remove it.
* regcache.h (cpy_no_passthrough): Remove it.
(regcache_dup, regcache_cpy): Update comments.
This patch converts functions extract_{unsigned,signed}_integer
to a function template extract_integer, which has two instantiations. It
also does the similar changes to store__{unsigned,signed}_integer,
regcache::raw_read_{unsigned,signed}, regcache::raw_write_{unsigned,signed},
regcache::cooked_read_{unsigned,signed},
regcache::cooked_write_{unsigned,signed}.
This patch was posted here
https://sourceware.org/ml/gdb-patches/2017-05/msg00492.html but the
problem was fixed in a different way. However, I think the patch is still
useful to shorten the code.
gdb:
2017-06-16 Alan Hayward <alan.hayward@arm.com>
Pedro Alves <palves@redhat.com>
Yao Qi <yao.qi@linaro.org>
* defs.h (RequireLongest): New.
(extract_integer): Declare function template.
(extract_signed_integer): Remove the declaration, but define it
static inline.
(extract_unsigned_integer): Likewise.
(store_integer): Declare function template.
(store_signed_integer): Remove the declaration, but define it
static inline.
(store_unsigned_integer): Likewise.
* findvar.c (extract_integer): New function template.
(extract_signed_integer): Remove.
(extract_unsigned_integer): Remove.
(extract_integer<LONGEST>, extract_integer<ULONGEST>): Explicit
instantiations.
(store_integer): New function template.
(store_signed_integer): Remove.
(store_unsigned_integer): Remove.
(store_integer): Explicit instantiations.
* regcache.c (regcache_raw_read_signed): Update.
(regcache::raw_read): New function.
(regcache::raw_read_signed): Remove.
(regcache::raw_read_unsigned): Remove.
(regcache_raw_read_unsigned): Update.
(regcache_raw_write_unsigned): Update.
(regcache::raw_write_signed): Remove.
(regcache::raw_write): New function.
(regcache_cooked_read_signed): Update.
(regcache::raw_write_unsigned): Remove.
(regcache::cooked_read_signed): Remove.
(regcache_cooked_read_unsigned): Update.
(regcache::cooked_read_unsigned): Remove.
(regcache_cooked_write_signed): Update.
(regcache_cooked_write_unsigned): Update.
* regcache.h (regcache) <raw_read_signed>: Remove.
<raw_write_signed, raw_read_unsigned, raw_write_unsigned>: Remove.
<raw_read, raw_write>: New.
<cooked_read_signed, cooked_write_signed>: Remove.
<cooked_write_unsigned, cooked_read_unsigned>: Remove.
<cooked_read, cooked_write>: New.
* sh64-tdep.c (sh64_pseudo_register_read): Update.
(sh64_pseudo_register_write): Update.
Use these to replace instances of MAX_REGISTER_SIZE.
* defs.h (copy_integer_to_size): New declaration.
* findvar.c (copy_integer_to_size): New function.
(do_cint_test): New selftest function.
(copy_integer_to_size_test): Likewise.
(_initialize_findvar): Likewise.
* mips-fbsd-tdep.c (mips_fbsd_supply_reg): Use raw_supply_integer.
(mips_fbsd_collect_reg): Use raw_collect_integer.
* mips-linux-tdep.c (supply_32bit_reg): Use raw_supply_integer.
(mips64_fill_gregset): Use raw_collect_integer
(mips64_fill_fpregset): Use raw_supply_integer.
* regcache.c (regcache::raw_supply_integer): New function.
(regcache::raw_collect_integer): Likewise.
* regcache.h: (regcache::raw_supply_integer): New declaration.
(regcache::raw_collect_integer): Likewise.
This patch adds one unit test for gdbarch methods register_to_value and
value_to_register. The test pass different combinations of {regnu, type}
to gdbarch_register_to_value and gdbarch_value_to_register. In order
to do the test, add a new function create_new_frame to create a fake
frame. It can be improved after we converted frame_info to class.
In order to isolate regcache (from target_ops operations on writing
registers, like target_store_registers), the sub-class of regcache in the
test override raw_write. Also, in order to get the right regcache from
get_thread_arch_aspace_regcache, the sub-class of regcache inserts itself
to current_regcache.
Suppose I incorrectly modified the size of buffer as below,
@@ -1228,7 +1228,7 @@ ia64_register_to_value (struct frame_info *frame, int regnum,
int *optimizedp, int *unavailablep)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
- gdb_byte in[MAX_REGISTER_SIZE];
+ gdb_byte in[1];
/* Convert to TYPE. */
if (!get_frame_register_bytes (frame, regnum, 0,
build GDB with "-fsanitize=address" and run unittest.exp, asan can detect
such error
==2302==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7fff98193870 at pc 0xbd55ea bp 0x7fff981935a0 sp 0x7fff98193598
WRITE of size 16 at 0x7fff98193870 thread T0
#0 0xbd55e9 in frame_register_unwind(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1119
#1 0xbd58c8 in frame_register(frame_info*, int, int*, int*, lval_type*, unsigned long*, int*, unsigned char*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1147
#2 0xbd6e25 in get_frame_register_bytes(frame_info*, int, unsigned long, int, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/frame.c:1427
#3 0x70080a in ia64_register_to_value /home/yao/SourceCode/gnu/gdb/git/gdb/ia64-tdep.c:1236
#4 0xbf570e in gdbarch_register_to_value(gdbarch*, frame_info*, int, type*, unsigned char*, int*, int*) /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch.c:2619
#5 0xc05975 in register_to_value_test /home/yao/SourceCode/gnu/gdb/git/gdb/gdbarch-selftests.c:131
Or, even if GDB is not built with asan, GDB just crashes.
*** stack smashing detected ***: ./gdb terminated
Aborted (core dumped)
gdb:
2017-05-24 Yao Qi <yao.qi@linaro.org>
* Makefile.in (SFILES): Add gdbarch-selftests.c.
(COMMON_OBS): Add gdbarch-selftests.o.
* frame.c [GDB_SELF_TESTS] (create_new_frame): New function.
* frame.h [GDB_SELF_TESTS] (create_new_frame): Declare.
* gdbarch-selftests.c: New file.
* regcache.h (regcache) <~regcache>: Mark it virtual if
GDB_SELF_TEST.
<raw_write>: Likewise.
This patches moves global variable current_regcache to a class regcache
static variable (protected) so that the unit test I add in the following
patch can access it (by means of extending class regcache in unit test).
gdb:
2017-05-24 Yao Qi <yao.qi@linaro.org>
* regcache.c (current_regcache): Change it to
regcache::current_regcache.
(regcache_observer_target_changed): Update.
(regcache_thread_ptid_changed): Make it a regcache static
method.
(regcache_thread_ptid_changed): Update.
(class regcache_access): New.
(current_regcache_test): Update.
(_initialize_regcache): Update.
* regcache.h: Include forward_list.
(regcache): Declare regcache_thread_ptid_changed and declare
registers_changed_ptid as friend.
This patch adds a tag dispatch ctor to create read-only regcache from
a write-through regcache, also this patch deletes copy ctor and
assignment operator.
gdb:
2017-04-28 Yao Qi <yao.qi@linaro.org>
Pedro Alves <palves@redhat.com>
* regcache.c (regcache::regcache): New tag dispatch ctor.
(do_cooked_read): Moved above.
(regcache_dup): Use the tag dispatch ctor..
* regcache.h (regcache): Declare ctor, delete copy ctor and
assignment operator, remove friend regcache_dup.
regcache_dup, in fact, is to create a readonly regcache from a
non-readonly regcache. This patch adds an assert that src is not
readonly.
gdb:
2017-04-28 Yao Qi <yao.qi@linaro.org>
* regcache.c (regcache_dup): Assert !src->m_readonly_p and
call method save instead of regcache_cpy.
* regcache.h (struct regcache): Make regcache_dup a friend.
This patch introduces the regcache_get_ptid function, which can be used
to retrieve the ptid a regcache is connected to. It is used in
subsequent patches.
gdb/ChangeLog:
* regcache.h (regcache_get_ptid): New function.
* regcache.c (regcache_get_ptid): New function.
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
This patch adds a new regcache api regcache_raw_get_signed.
gdb:
2016-11-22 Yao Qi <yao.qi@linaro.org>
* regcache.c (regcache_raw_get_signed): New function.
* regcache.h (regcache_raw_get_signed): Declare.
The jit-reader.exp test isn't really exercising the jit-reader's
unwinder API at all. This commit address that, and then fixes GDB
problems exposed.
- The custom JIT reader provided for the jit-reader.exp testcase
always rejects the jitted function's frame...
This is because the custom JIT reader in the testcase never ever
sets state->code_begin/end, so the bounds check in
gdb.base/jitreader.c:unwind_frame:
if (this_ip >= state->code_end || this_ip < state->code_begin)
return GDB_FAIL;
tends to fail, unless you're "lucky" (because it references
uninitialized data).
The result is that GDB is always actually using a built-in unwinder
for the jitted function.
- The provided unwinder doesn't do anything that GDB's built-in
unwinder can't do.
IOW, we can't really tell whether the JIT reader's unwinder is
working or not.
I fixed that by making the jitted function mangle its own stack
pointer with a xor, and then teaching the jit unwinder to demangle
it back (another xor). So now "backtrace" with GDB's built-in
unwinder fails while with the jit unwinder, it succeeds.
- GDB crashes after unloading the JIT reader, and flushing frames...
I made the testcase use the "flushregs" command after unloading the
JIT reader, to force the JIT frames to be flushed. However, that
crashes GDB...
When reinit_frame_cache tears down a frame's cache, it calls its
unwinder's dealloc_cache method, which for JIT frames ends up in
jit.c:jit_dealloc_cache. This function calls each of the frame's
gdb_reg_value's "free" pointer:
for (i = 0; i < gdbarch_num_regs (frame_arch); i++)
if (priv_data->registers[i] && priv_data->registers[i]->free)
priv_data->registers[i]->free (priv_data->registers[i]);
and the problem is these gdb_reg_value instances have been returned
by the JIT reader that has been already unloaded, and their "free"
function pointers likely point to functions in the DSO that has
already been unloaded...
A fix for that could be to call reinit_frame_cache in
jit_reader_unload_command _before_ unloading the jit reader DSO so
that the jit reader is given a chance to clean up the gdb_reg_values
before it is unloaded. However, the fix for the point below makes
this unnecessary, because it stops jit.c from keeping around
gdb_reg_values in the first place.
- However, it still makes sense to clear the frame cache when loading
or unloading a JIT unwinder.
This makes testing a JIT unwinder a bit simpler.
- Not only the frame cache actually -- gdb is not unloading the
jit-registered objfiles when the JIT reader is unloaded, and not
loading the already-registered descriptors when a JIT reader is
loaded.
The new test exercises unloading the jit reader, loading it back
again, and then making sure the JIT reader's unwinder works again.
Without the unload/re-load of already-read descriptors, the newly
loaded JIT would have no idea where the new function is, because
it's stored at symbol read time.
- I added a couple "info frame" calls to the test, and that
crashes GDB...
The problem is that jit_frame_prev_register assumes it'll only be
called for raw registers, so when it gets a pseudo register number,
the "priv->registers[reg]" access is really an out-of-bounds access.
To fix that, I made jit_frame_prev_register use
gdbarch_pseudo_register_read_value for reading the pseudo-registers.
However, that works with a regcache and we don't have one. To fix
that, I made the JIT unwinder store a regcache in its cache instead
of an array of gdb_reg_value pointers.
gdb/ChangeLog:
2016-07-01 Pedro Alves <palves@redhat.com>
Tom Tromey <tom@tromey.com>
* jit.c (jit_reader_load_command): Call reinit_frame_cache and
jit_inferior_created_hook.
(jit_reader_unload_command): Call reinit_frame_cache and
jit_inferior_exit_hook.
* jit.c (struct jit_unwind_private) <registers>: Delete field.
<regcache>: New field.
(jit_unwind_reg_set_impl): Set the register's value in the
regcache. Free the passed-in gdb_reg_value.
(jit_dealloc_cache): Adjust to free the regcache.
(jit_frame_sniffer): Allocate a regcache instead of an array of
gdb_reg_value pointers.
(jit_frame_this_id): Adjust.
(jit_frame_prev_register): Read raw registers off of the regcache
instead of from the gdb_reg_value pointer array. Use
gdbarch_pseudo_register_read_value to read pseudo registers.
* regcache.c (regcache_raw_set_cached_value): New function,
factored out from ...
(regcache_raw_write): ... here.
* regcache.h (regcache_raw_set_cached_value): Declare.
gdb/testsuite/ChangeLog:
2016-07-01 Pedro Alves <palves@redhat.com>
* gdb.base/jit-reader.exp (info_registers_current_frame): New
procedure.
(jit_reader_test): Test the jit reader's unwinder.
* gdb.base/jithost.c (jit_function_00_code): New global.
(main): Use memcpy to fill in the mmapped code, instead of poking
bytes manually here.
* gdb.base/jitreader.c (enum register_mapping) <AMD64_RBP>: New
value.
(read_debug_info): Save the function's range.
(read_sp): New function.
(unwind_frame): Use it. Also unwind RBP.
(get_frame_id): Use read_sp.
(gdb_init_reader): Use calloc instead of malloc.
* lib/gdb.exp (get_hexadecimal_valueof): Add optional 'test'
parameter. Use gdb_test_multiple.
This patch is in preparation for software single step support on ARM in
GDBServer. It adds a new shared function regcache_raw_read_unsigned and
regcache_raw_get_unsigned so that GDB and GDBServer can use the same call
to fetch a raw register into an integer.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/ChangeLog:
* Makefile.in (SFILES): Append common/common-regcache.c.
(COMMON_OBS): Append common/common-regcache.o.
(common-regcache.o): New rule.
* common/common-regcache.h (register_status) New enum.
(regcache_raw_read_unsigned): New declaration.
* common/common-regcache.c: New file.
* regcache.h (enum register_status): Move to common-regcache.h.
(regcache_raw_read_unsigned): Likewise.
(regcache_raw_get_unsigned): Likewise.
gdb/gdbserver/ChangeLog:
* Makefile.in (SFILES): Append common/common-regcache.c.
(OBS): Append common-regcache.o.
(common-regcache.o): New rule.
* regcache.c (init_register_cache): Initialize cache to
REG_UNAVAILABLE.
(regcache_raw_read_unsigned): New function.
* regcache.h (REG_UNAVAILABLE, REG_VALID): Replaced by shared
register_status enum.
This patch is in preparation for software single step support on ARM in
GDBServer. It refactors arm_*_software_single_step and sub-functions to
use regcache instead of frame to access registers so that the code can be
shared more easily between GDB and GDBServer.
Note also that since the intention is at some point to get rid of frame
completely in that function, memory reads have also been replaced by
read_memory_unsigned_integer rather than get_frame_memory_unsigned.
No regressions, tested on ubuntu 14.04 ARMv7 and x86.
With gdbserver-{native,extended} / { -marm -mthumb }
gdb/ChangeLog:
* arm-linux-tdep.c (arm_linux_sigreturn_next_pc_offset): New function.
(arm_linux_sigreturn_next_pc): Likewise.
(arm_linux_syscall_next_pc): Use regcache instead of frame.
(arm_linux_software_single_step): Likewise.
* arm-tdep.c (arm_is_thumb): New function.
(shifted_reg_va): Use regcache instead of frame.
(thumb_get_next_pc_raw): Likewise.
(arm_get_next_pc_raw): Likewise.
(arm_get_next_pc): Likewise.
(thumb_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence_raw): Likewise.
(arm_deal_with_atomic_sequence): Likewise.
(arm_software_single_step): Likewise.
* arm-tdep.h (struct gdbarch_tdep): Use regcache for syscall_next_pc.
(arm_get_next_pc): Use regcache.
(arm_deal_with_atomic_sequence): Likewise.
(arm_is_thumb): New declaration.
* regcache.c (regcache_raw_get_unsigned): New function.
* regcache.h (regcache_raw_get_unsigned): New function declaration.
regcache_cpy_no_passthrough is no longer used for a standalone call.
gdb/ChangeLog
2015-05-13 Jan Kratochvil <jan.kratochvil@redhat.com>
* regcache.c (regcache_cpy_no_passthrough): New declaration.
(regcache_cpy_no_passthrough): Make it static, add function comment.
* regcache.h (regcache_dup, regcache_cpy): Reduce/update their comment.
(regcache_cpy_no_passthrough): Remove declaration.
This introduces common-regcache.h. This contains two functions that
allow nat/linux-btrace.c to be simplified. A better long term
solution would be unify the regcache code, but this is sufficient for
now.
gdb/ChangeLog:
* common/common-regcache.h: New file.
* Makefile.in (HFILES_NO_SRCDIR): Add common/common-regcache.h.
* regcache.h: Include common-regcache.h.
(regcache_read_pc): Don't declare.
* regcache.c (get_thread_regcache_for_ptid): New function.
* nat/linux-btrace.c: Don't include regcache.h.
Include common-regcache.h.
(perf_event_read_bts): Use get_thread_regcache_for_ptid.
gdb/gdbserver/ChangeLog:
* regcache.h: Include common-regcache.h.
(regcache_read_pc): Don't declare.
* regcache.c (get_thread_regcache_for_ptid): New function.
gdb/
* regcache.h (struct regset): Declare.
Commit 0b3092721e added uses of struct regset to
gdb/regcache.h, but that struct is not declared in this file, and, as it
happens, also nowhere else in the #include chain on x86 GNU/Hurd. This results
in warnings/errors such as:
gcc-4.8 [...] ../../W._C._Handy/gdb/gdb.c
In file included from ./nm.h:25:0,
from ../../W._C._Handy/gdb/defs.h:454,
from ../../W._C._Handy/gdb/gdb.c:19:
../../W._C._Handy/gdb/regcache.h:190:9: warning: 'struct regset' declared inside parameter list [enabled by default]
size_t size);
^
../../W._C._Handy/gdb/regcache.h:190:9: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default]
../../W._C._Handy/gdb/regcache.h:193:10: warning: 'struct regset' declared inside parameter list [enabled by default]
int regnum, void *buf, size_t size);
^
These functions are intended to suit all targets that don't require too
special logic in their regset supply/collect methods. Having such
generic functions helps reducing target-specific complexity.
Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
* infrun.c (displaced_step_fixup): Move some code ...
(displaced_step_restore): ... here. New function.
(handle_inferior_event): Cleanup displaced stepping state for both
child and parent when get forked or vforked event.
* regcache.c (get_thread_arch_aspace_regcache): New function.
get_thread_arch_regcache (): Call it.
* regcache.h (regcache_raw_read, regcache_raw_read_signed)
(regcache_raw_read_unsigned, regcache_raw_read_signed)
(regcache_raw_read_unsigned, regcache_raw_read_part)
(regcache_cooked_read, regcache_cooked_read_signed)
(regcache_cooked_read_unsigned, regcache_cooked_read_part)
(regcache_cooked_read_ftype): Change return to enum
register_status.
* regcache.c: Include exceptions.h
(regcache_save): Adjust to handle REG_UNAVAILABLE registers.
(do_cooked_read): Change return to enum register_status. Always
forward to regcache_cooked_read.
(regcache_raw_read): Change return to enum register_status. If
the register is not REG_VALID, memset the buffer. Return the
register's status.
(regcache_raw_read_signed): Handle non-REG_VALID registers and
return the register's status.
(regcache_raw_read_unsigned): Ditto.
(regcache_cooked_read): Change return to enum register_status.
Assert that with read-only regcaches, the register's status must
be known. If the regcache is read-only, and the register is not
REG_VALID, memset the buffer. Return the register's status.
(regcache_cooked_read_signed): Change return to enum
register_status. Handle non-REG_VALID registers and return the
register's status.
(regcache_cooked_read_unsigned): Change return to enum
register_status. Handle non-REG_VALID registers and return the
register's status.
(regcache_xfer_part, regcache_raw_read_part)
(regcache_cooked_read_part): Change return to enum
register_status. Return the register's status.
(regcache_read_pc): Throw NOT_AVAILABLE_ERROR if the register is
unavailable.
(regcache_dump): Handle unavailable cooked registers.
* frame.c (do_frame_register_read): Adjust interface to match
regcache_cooked_read_ftype.
* gdbarch.sh (pseudo_register_read): Change return to enum
register_status.
* gdbarch.h, gdbarch.c: Regenerate.
* i386-tdep.h (i386_pseudo_register_read): Change return to enum
register_status.
* i386-tdep.c (i386_pseudo_register_read): Change return to enum
register_status. If reading a raw register indicates the raw
register is not valid, return the raw register's status,
otherwise, return REG_VALID.
* amd64-tdep.c (amd64_pseudo_register_read): Change return to enum
register_status. Handle non-REG_VALID raw registers and return
the register's status.
* arm-tdep.c (arm_neon_quad_read)
(arm_pseudo_read): Change return to enum register_status. Handle
non-REG_VALID raw registers and return the register's status.
* avr-tdep.c (avr_pseudo_register_read): Ditto.
* frv-tdep.c (frv_pseudo_register_read): Ditto.
* h8300-tdep.c (h8300_pseudo_register_read): Ditto.
* hppa-tdep.c (hppa_pseudo_register_read): Ditto.
* m32c-tdep.c (m32c_move_reg_t): Change return to enum
register_status.
(m32c_raw_read, m32c_raw_write, m32c_banked_read)
(m32c_banked_write, m32c_sb_read, m32c_sb_write, m32c_part_read)
(m32c_part_write, m32c_cat_read, m32c_cat_write)
(m32c_r3r2r1r0_read, m32c_r3r2r1r0_write)
(m32c_pseudo_register_read): Change return to enum
register_status. Adjust.
* m68hc11-tdep.c (m68hc11_pseudo_register_read): Change return to
enum register_status. Return the register's status.
* mep-tdep.c (mep_pseudo_cr32_read): Change return to enum
register_status. Return the register's status.
(mep_pseudo_cr64_read, mep_pseudo_register_read): Ditto.
* mips-tdep.c (mips_pseudo_register_read): Ditto.
* mt-tdep.c (mt_pseudo_register_read): Ditto.
* rs6000-tdep.c (move_ev_register_func): New typedef.
(e500_move_ev_register): Use it. Change return to enum
register_status. Return the register's status.
(do_regcache_raw_read): New function.
(do_regcache_raw_write): New function.
(e500_pseudo_register_read): Change return to enum
register_status. Return the register's status. Use
do_regcache_raw_read.
(e500_pseudo_register_write): Adjust. Use do_regcache_raw_write.
(dfp_pseudo_register_read): Change return to enum register_status.
Return the register's status.
(vsx_pseudo_register_read): Ditto.
(efpr_pseudo_register_read): Ditto.
(rs6000_pseudo_register_read): Ditto.
* s390-tdep.c (s390_pseudo_register_read): Change return to enum
register_status. Return the register's status.
* sh64-tdep.c (pseudo_register_read_portions): New function.
(sh64_pseudo_register_read): Change return to enum
register_status. Use pseudo_register_read_portions. Return the
register's status.
* ia64-tdep.c (ia64_pseudo_register_read): Change return to enum
register_status. Return the register's status.
* sh-tdep.c (pseudo_register_read_portions): New function.
(sh_pseudo_register_read): Change return to enum register_status.
Use pseudo_register_read_portions. Return the register's status.
* sparc-tdep.c (sparc32_pseudo_register_read): Change return to
enum register_status. Return the register's status.
* sparc64-tdep.c (sparc64_pseudo_register_read): Ditto.
* spu-tdep.c (spu_pseudo_register_read_spu)
(spu_pseudo_register_read): Ditto.
* xtensa-tdep.c (xtensa_register_read_masked)
(xtensa_pseudo_register_read): Ditto.
* bfin-tdep.c (bfin_pseudo_register_read): Ditto.
(init_regcache_descr): Remove sizeof_raw_register_valid_p
overallocate hack.
(regcache_xmalloc): Rename to ...
(regcache_xmalloc_1): ... this. Add `readonly_p' parameter.
Allocate the regcache type accordingly.
(regcache_xmalloc): New as wrapper around regcache_xmalloc_1.
(regcache_xfree): Asser the source is also readonly. Copy sizeof
cooked registers, not raw.
(regcache_dup_no_passthrough): Delete.
(get_thread_arch_regcache): Use regcache_xmalloc_1.
* h8300-tdep.c (h8300_push_dummy_call): Tweak comment to not
mention obsolete write_register_bytes.
* regcache.h (regcache_dup_no_passthrough): Delete declaration.
for the new regcache. All callers updated.
(regcache_cpy, regcache_cpy_no_passthrough): Do not set aspace here.
(get_thread_arch_regcache): Do not set aspace here.
* regcache.h (regcache_xmalloc): Update declaration.
* frame.c, infcall.c, ppc-linux-tdep.c: Calls to
regcache_xmalloc updated.
Stan Shebs <stan@codesourcery.com>
Add base multi-executable/process support to GDB.
gdb/
* Makefile.in (SFILES): Add progspace.c.
(COMMON_OBS): Add progspace.o.
* progspace.h: New.
* progspace.c: New.
* breakpoint.h (struct bp_target_info) <placed_address_space>: New
field.
(struct bp_location) <pspace>: New field.
(struct breakpoint) <pspace>: New field.
(bpstat_stop_status, breakpoint_here_p)
(moribund_breakpoint_here_p, breakpoint_inserted_here_p)
(regular_breakpoint_inserted_here_p)
(software_breakpoint_inserted_here_p, breakpoint_thread_match)
(set_default_breakpoint): Adjust prototypes.
(remove_breakpoints_pid, breakpoint_program_space_exit): Declare.
(insert_single_step_breakpoint, deprecated_insert_raw_breakpoint):
Adjust prototypes.
* breakpoint.c (executing_startup): Delete.
(default_breakpoint_sspace): New.
(breakpoint_restore_shadows): Skip if the address space doesn't
match.
(update_watchpoint): Record the frame's program space in the
breakpoint location.
(insert_bp_location): Record the address space in target_info.
Adjust to pass the symbol space to solib_name_from_address.
(breakpoint_program_space_exit): New.
(insert_breakpoint_locations): Switch the symbol space and thread
when inserting breakpoints. Don't insert breakpoints in a vfork
parent waiting for vfork done if we're not attached to the vfork
child.
(remove_breakpoints_pid): New.
(reattach_breakpoints): Switch to a thread of PID. Ignore
breakpoints of other symbol spaces.
(create_internal_breakpoint): Store the symbol space in the sal.
(create_longjmp_master_breakpoint): Iterate over all symbol
spaces.
(update_breakpoints_after_exec): Ignore breakpoints for other
symbol spaces.
(remove_breakpoint): Rename to ...
(remove_breakpoint_1): ... this. Pass the breakpoints symbol
space to solib_name_from_address.
(remove_breakpoint): New.
(mark_breakpoints_out): Ignore breakpoints from other symbol
spaces.
(breakpoint_init_inferior): Ditto.
(breakpoint_here_p): Add an address space argument and adjust to
use breakpoint_address_match.
(moribund_breakpoint_here_p): Ditto.
(regular_breakpoint_inserted_here_p): Ditto.
(breakpoint_inserted_here_p): Ditto.
(software_breakpoint_inserted_here_p): Ditto.
(breakpoint_thread_match): Ditto.
(bpstat_check_location): Ditto.
(bpstat_stop_status): Ditto.
(print_breakpoint_location): If there's a location to print,
switch the current symbol space.
(print_one_breakpoint_location): Add `allflag' argument.
(print_one_breakpoint): Ditto. Adjust.
(do_captured_breakpoint_query): Adjust.
(breakpoint_1): Adjust.
(breakpoint_has_pc): Also match the symbol space.
(describe_other_breakpoints): Add a symbol space argument and
adjust.
(set_default_breakpoint): Add a symbol space argument. Set
default_breakpoint_sspace.
(breakpoint_address_match): New.
(check_duplicates_for): Add an address space argument, and adjust.
(set_raw_breakpoint): Record the symbol space in the location and
in the breakpoint.
(set_longjmp_breakpoint): Skip longjmp master breakpoints from
other symbol spaces.
(remove_thread_event_breakpoints, remove_solib_event_breakpoints)
(disable_breakpoints_in_shlibs): Skip breakpoints from other
symbol spaces.
(disable_breakpoints_in_unloaded_shlib): Match symbol spaces.
(create_catchpoint): Set the symbol space in the sal.
(disable_breakpoints_before_startup): Skip breakpoints from other
symbol spaces. Set executing_startup in the current symbol space.
(enable_breakpoints_after_startup): Clear executing_startup in the
current symbol space. Skip breakpoints from other symbol spaces.
(clone_momentary_breakpoint): Also copy the symbol space.
(add_location_to_breakpoint): Set the location's symbol space.
(bp_loc_is_permanent): Switch thread and symbol space.
(create_breakpoint): Adjust.
(expand_line_sal_maybe): Expand comment to mention symbol spaces.
Switch thread and symbol space when reading memory.
(parse_breakpoint_sals): Set the symbol space in the sal.
(break_command_really): Ditto.
(skip_prologue_sal): Switch and space.
(resolve_sal_pc): Ditto.
(watch_command_1): Record the symbol space in the sal.
(create_ada_exception_breakpoint): Adjust.
(clear_command): Adjust. Match symbol spaces.
(update_global_location_list): Use breakpoint_address_match.
(breakpoint_re_set_one): Switch thread and space.
(breakpoint_re_set): Save symbol space.
(breakpoint_re_set_thread): Also reset the symbol space.
(deprecated_insert_raw_breakpoint): Add an address space argument.
Adjust.
(insert_single_step_breakpoint): Ditto.
(single_step_breakpoint_inserted_here_p): Ditto.
(clear_syscall_counts): New.
(_initialize_breakpoint): Install it as inferior_exit observer.
* exec.h: Include "progspace.h".
(exec_bfd, exec_bfd_mtime): New defines.
(exec_close): Declare.
* exec.c: Include "gdbthread.h" and "progspace.h".
(exec_bfd, exec_bfd_mtime, current_target_sections_1): Delete.
(using_exec_ops): New.
(exec_close_1): Rename to exec_close, and make public.
(exec_close): Rename to exec_close_1, and adjust all callers. Add
description. Remove target sections and close executables from
all program spaces.
(exec_file_attach): Add comment.
(add_target_sections): Check on `using_exec_ops' to check if the
target should be pushed.
(remove_target_sections): Only unpush the target if there are no
more target sections in any symbol space.
* gdbcore.h: Include "exec.h".
(exec_bfd, exec_bfd_mtime): Remove declarations.
* frame.h (get_frame_program_space, get_frame_address_space)
(frame_unwind_program_space): Declare.
* frame.c (struct frame_info) <pspace, aspace>: New fields.
(create_sentinel_frame): Add program space argument. Set the
pspace and aspace fields of the frame object.
(get_current_frame, create_new_frame): Adjust.
(get_frame_program_space): New.
(frame_unwind_program_space): New.
(get_frame_address_space): New.
* stack.c (print_frame_info): Adjust.
(print_frame): Use the frame's program space.
* gdbthread.h (any_live_thread_of_process): Declare.
* thread.c (any_live_thread_of_process): New.
(switch_to_thread): Switch the program space as well.
(restore_selected_frame): Don't warn if trying to restore frame
level 0.
* inferior.h: Include "progspace.h".
(detach_fork): Declare.
(struct inferior) <removable, aspace, pspace>
<vfork_parent, vfork_child, pending_detach>
<waiting_for_vfork_done>: New fields.
<terminal_info>: Remove field.
<data, num_data>: New fields.
(register_inferior_data, register_inferior_data_with_cleanup)
(clear_inferior_data, set_inferior_data, inferior_data): Declare.
(exit_inferior, exit_inferior_silent, exit_inferior_num_silent)
(inferior_appeared): Declare.
(find_inferior_pid): Typo.
(find_inferior_id, find_inferior_for_program_space): Declare.
(set_current_inferior, save_current_inferior, prune_inferiors)
(number_of_inferiors): Declare.
(inferior_list): Declare.
* inferior.c: Include "gdbcore.h" and "symfile.h".
(inferior_list): Make public.
(delete_inferior_1): Always delete thread silently.
(find_inferior_id): Make public.
(current_inferior_): New.
(current_inferior): Use it.
(set_current_inferior): New.
(restore_inferior): New.
(save_current_inferior): New.
(free_inferior): Free the per-inferior data.
(add_inferior_silent): Allocate per-inferior data.
Call inferior_appeared.
(delete_threads_of_inferior): New.
(delete_inferior_1): Adjust interface to take an inferior pointer.
(delete_inferior): Adjust.
(delete_inferior_silent): Adjust.
(exit_inferior_1): New.
(exit_inferior): New.
(exit_inferior_silent): New.
(exit_inferior_num_silent): New.
(detach_inferior): Adjust.
(inferior_appeared): New.
(discard_all_inferiors): Adjust.
(find_inferior_id): Make public. Assert pid is not zero.
(find_inferior_for_program_space): New.
(have_inferiors): Check if we have any inferior with pid not zero.
(have_live_inferiors): Go over all pushed targets looking for
process_stratum.
(prune_inferiors): New.
(number_of_inferiors): New.
(print_inferior): Add executable column. Print vfork parent/child
relationships.
(inferior_command): Adjust to cope with not running inferiors.
(remove_inferior_command): New.
(add_inferior_command): New.
(clone_inferior_command): New.
(struct inferior_data): New.
(struct inferior_data_registration): New.
(struct inferior_data_registry): New.
(inferior_data_registry): New.
(register_inferior_data_with_cleanup): New.
(register_inferior_data): New.
(inferior_alloc_data): New.
(inferior_free_data): New.
(clear_inferior_data): New.
(set_inferior_data): New.
(inferior_data): New.
(initialize_inferiors): New.
(_initialize_inferiors): Register "add-inferior",
"remove-inferior" and "clone-inferior" commands.
* objfiles.h: Include "progspace.h".
(struct objfile) <pspace>: New field.
(symfile_objfile, object_files): Don't declare.
(ALL_PSPACE_OBJFILES): New.
(ALL_PSPACE_OBJFILES_SAFE): New.
(ALL_OBJFILES, ALL_OBJFILES_SAFE): Adjust.
(ALL_PSPACE_SYMTABS): New.
(ALL_PRIMARY_SYMTABS): Adjust.
(ALL_PSPACE_PRIMARY_SYMTABS): New.
(ALL_PSYMTABS): Adjust.
(ALL_PSPACE_PSYMTABS): New.
* objfiles.c (object_files, symfile_objfile): Delete.
(struct objfile_sspace_info): New.
(objfiles_pspace_data): New.
(objfiles_pspace_data_cleanup): New.
(get_objfile_pspace_data): New.
(objfiles_changed_p): Delete.
(allocate_objfile): Set the objfile's program space. Adjust to
reference objfiles_changed_p in pspace data.
(free_objfile): Adjust to reference objfiles_changed_p in pspace
data.
(objfile_relocate): Ditto.
(update_section_map): Add pspace argument. Adjust to iterate over
objfiles in the passed in pspace.
(find_pc_section): Delete sections and num_sections statics.
Adjust to refer to program space's objfiles_changed_p. Adjust to
refer to sections and num_sections store in the objfile's pspace
data.
(objfiles_changed): Adjust to reference objfiles_changed_p in
pspace data.
(_initialize_objfiles): New.
* linespec.c (decode_all_digits, decode_dollar): Set the sal's
program space.
* source.c (current_source_pspace): New.
(get_current_source_symtab_and_line): Set the sal's program space.
(set_current_source_symtab_and_line): Set current_source_pspace.
(select_source_symtab): Ditto. Use ALL_OBJFILES.
(forget_cached_source_info): Iterate over all program spaces.
* symfile.c (clear_symtab_users): Adjust.
* symmisc.c (print_symbol_bcache_statistics): Iterate over all
program spaces.
(print_objfile_statistics): Ditto.
(maintenance_print_msymbols): Ditto.
(maintenance_print_objfiles): Ditto.
(maintenance_info_symtabs): Ditto.
(maintenance_info_psymtabs): Ditto.
* symtab.h (SYMTAB_PSPACE): New.
(struct symtab_and_line) <pspace>: New field.
* symtab.c (init_sal): Clear the sal's program space.
(find_pc_sect_symtab): Set the sal's program space. Switch thread
and space.
(append_expanded_sal): Add program space argument. Iterate over
all program spaces.
(expand_line_sal): Iterate over all program spaces. Switch
program space.
* target.h (enum target_waitkind) <TARGET_WAITKIND_VFORK_DONE>: New.
(struct target_ops) <to_thread_address_space>: New field.
(target_thread_address_space): Define.
* target.c (target_detach): Only remove breakpoints from the
inferior we're detaching.
(target_thread_address_space): New.
* defs.h (initialize_progspace): Declare.
* top.c (gdb_init): Call it.
* solist.h (struct so_list) <sspace>: New field.
* solib.h (struct program_space): Forward declare.
(solib_name_from_address): Adjust prototype.
* solib.c (so_list_head): Replace with a macro referencing the
program space.
(update_solib_list): Set the so's program space.
(solib_name_from_address): Add a program space argument and adjust.
* solib-svr4.c (struct svr4_info) <pid>: Delete field.
<interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low>
<interp_plt_sect_high>: New fields.
(svr4_info_p, svr4_info): Delete.
(solib_svr4_sspace_data): New.
(get_svr4_info): Rewrite.
(svr4_sspace_data_cleanup): New.
(open_symbol_file_object): Adjust.
(svr4_default_sos): Adjust.
(svr4_fetch_objfile_link_map): Adjust.
(interp_text_sect_low, interp_text_sect_high, interp_plt_sect_low)
(interp_plt_sect_high): Delete.
(svr4_in_dynsym_resolve_code): Adjust.
(enable_break): Adjust.
(svr4_clear_solib): Revert bit that removed the svr4_info here,
and reinstate clearing debug_base, debug_loader_offset_p,
debug_loader_offset and debug_loader_name.
(_initialize_svr4_solib): Register solib_svr4_pspace_data. Don't
install an inferior_exit observer anymore.
* printcmd.c (struct display) <pspace>: New field.
(display_command): Set the display's sspace.
(do_one_display): Match the display's sspace.
(display_uses_solib_p): Ditto.
* linux-fork.c (detach_fork): Moved to infrun.c.
(_initialize_linux_fork): Moved "detach-on-fork" command to
infrun.c.
* infrun.c (detach_fork): Moved from linux-fork.c.
(proceed_after_vfork_done): New.
(handle_vfork_child_exec_or_exit): New.
(follow_exec_mode_replace, follow_exec_mode_keep)
(follow_exec_mode_names, follow_exec_mode_string)
(show_follow_exec_mode_string): New.
(follow_exec): New. Reinstate the mark_breakpoints_out call.
Remove shared libraries before attaching new executable. If user
wants to keep the inferior, keep it.
(displaced_step_fixup): Adjust to pass an address space to the
breakpoints module.
(resume): Ditto.
(clear_proceed_status): In all-stop mode, always clear the proceed
status of all threads.
(prepare_to_proceed): Adjust to pass an address space to the
breakpoints module.
(proceed): Ditto.
(adjust_pc_after_break): Ditto.
(handle_inferior_event): When handling a process exit, switch the
program space to the inferior's that had exited. Call
handle_vfork_child_exec_or_exit. Adjust to pass an address space
to the breakpoints module. In non-stop mode, when following a
fork and detach-fork is off, also resume the other branch. Handle
TARGET_WAITKIND_VFORK_DONE. Set the program space in sals.
(normal_stop): Prune inferiors.
(_initialize_infrun): Install the new "follow-exec-mode" command.
"detach-on-fork" moved here.
* regcache.h (get_regcache_aspace): Declare.
* regcache.c (struct regcache) <aspace>: New field.
(regcache_xmalloc): Clear the aspace.
(get_regcache_aspace): New.
(regcache_cpy): Copy the aspace field.
(regcache_cpy_no_passthrough): Ditto.
(get_thread_regcache): Fetch the thread's address space from the
target, and store it in the regcache.
* infcall.c (call_function_by_hand): Set the sal's pspace.
* arch-utils.c (default_has_shared_address_space): New.
* arch-utils.h (default_has_shared_address_space): Declare.
* gdbarch.sh (has_shared_address_space): New.
* gdbarch.h, gdbarch.c: Regenerate.
* linux-tdep.c: Include auxv.h, target.h, elf/common.h.
(linux_has_shared_address_space): New.
(_initialize_linux_tdep): Declare.
* arm-tdep.c (arm_software_single_step): Pass the frame's address
space to insert_single_step_breakpoint.
* arm-linux-tdep.c (arm_linux_software_single_step): Pass the
frame's pspace to breakpoint functions.
* cris-tdep.c (crisv32_single_step_through_delay): Ditto.
(cris_software_single_step): Ditto.
* mips-tdep.c (deal_with_atomic_sequence): Add frame argument.
Pass the frame's pspace to breakpoint functions.
(mips_software_single_step): Adjust.
(mips_single_step_through_delay): Adjust.
* rs6000-aix-tdep.c (rs6000_software_single_step): Adjust.
* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Adjust.
* solib-irix.c (enable_break): Adjust to pass the current frame's
address space to breakpoint functions.
* sparc-tdep.c (sparc_software_single_step): Ditto.
* spu-tdep.c (spu_software_single_step): Ditto.
* alpha-tdep.c (alpha_software_single_step): Ditto.
* record.c (record_wait): Adjust to pass an address space to the
breakpoints module.
* fork-child.c (fork_inferior): Set the new inferior's program and
address spaces.
* inf-ptrace.c (inf_ptrace_follow_fork): Copy the parent's program
and address spaces.
(inf_ptrace_attach): Set the inferior's program and address spaces.
* linux-nat.c: Include "solib.h".
(linux_child_follow_fork): Manage parent and child's program and
address spaces. Clone the parent's program space if necessary.
Don't wait for the vfork to be done here. Refuse to resume if
following the vfork parent while leaving the child stopped.
(resume_callback): Don't resume a vfork parent.
(linux_nat_resume): Also check for pending events in the
lp->waitstatus field.
(linux_handle_extended_wait): Report TARGET_WAITKIND_VFORK_DONE
events to the core.
(stop_wait_callback): Don't wait for SIGSTOP on vfork parents.
(cancel_breakpoint): Adjust.
* linux-thread-db.c (thread_db_wait): Don't remove thread event
breakpoints here.
(thread_db_mourn_inferior): Don't mark breakpoints out here.
Remove thread event breakpoints after mourning.
* corelow.c: Include progspace.h.
(core_open): Set the inferior's program and address spaces.
* remote.c (remote_add_inferior): Set the new inferior's program
and address spaces.
(remote_start_remote): Update address spaces.
(extended_remote_create_inferior_1): Don't init the thread list if
we already debugging other inferiors.
* darwin-nat.c (darwin_attach): Set the new inferior's program and
address spaces.
* gnu-nat.c (gnu_attach): Ditto.
* go32-nat.c (go32_create_inferior): Ditto.
* inf-ttrace.c (inf_ttrace_follow_fork, inf_ttrace_attach): Ditto.
* monitor.c (monitor_open): Ditto.
* nto-procfs.c (procfs_attach, procfs_create_inferior): Ditto.
* procfs.c (do_attach): Ditto.
* windows-nat.c (do_initial_windows_stuff): Ditto.
* inflow.c (inferior_process_group)
(terminal_init_inferior_with_pgrp, terminal_inferior,
(terminal_ours_1, inflow_inferior_exit, copy_terminal_info)
(child_terminal_info, new_tty_postfork, set_sigint_trap): Adjust
to use per-inferior data instead of inferior->terminal_info.
(inflow_inferior_data): New.
(inflow_new_inferior): Delete.
(inflow_inferior_data_cleanup): New.
(get_inflow_inferior_data): New.
* mi/mi-interp.c (mi_new_inferior): Rename to...
(mi_inferior_appeared): ... this.
(mi_interpreter_init): Adjust.
* tui/tui-disasm.c: Include "progspace.h".
(tui_set_disassem_content): Pass an address space to
breakpoint_here_p.
* NEWS: Mention multi-program debugging support. Mention new
commands "add-inferior", "clone-inferior", "remove-inferior",
"maint info program-spaces", and new option "set
follow-exec-mode".
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/doc/
* observer.texi (new_inferior): Rename to...
(inferior_appeared): ... this.
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/testsuite/
* gdb.base/foll-vfork.exp: Adjust to spell out "follow-fork".
* gdb.base/foll-exec.exp: Adjust to expect a process id before
"Executing new program".
* gdb.base/foll-fork.exp: Adjust to spell out "follow-fork".
* gdb.base/multi-forks.exp: Ditto. Adjust to the inferior being
left listed after having been killed.
* gdb.base/attach.exp: Adjust to spell out "symbol-file".
* gdb.base/maint.exp: Adjust test.
* Makefile.in (ALL_SUBDIRS): Add gdb.multi.
* gdb.multi/Makefile.in: New.
* gdb.multi/base.exp: New.
* gdb.multi/goodbye.c: New.
* gdb.multi/hangout.c: New.
* gdb.multi/hello.c: New.
* gdb.multi/bkpt-multi-exec.c: New.
* gdb.multi/bkpt-multi-exec.exp: New.
* gdb.multi/crashme.c: New.
2009-10-19 Pedro Alves <pedro@codesourcery.com>
Stan Shebs <stan@codesourcery.com>
gdb/doc/
* gdb.texinfo (Inferiors): Rename node to ...
(Inferiors and Programs): ... this. Mention running multiple
programs in the same debug session.
<info inferiors>: Mention the new 'Executable' column if "info
inferiors". Update examples. Document the "add-inferior",
"clone-inferior", "remove-inferior" and "maint info
program-spaces" commands.
(Process): Rename node to...
(Forks): ... this. Document "set|show follow-exec-mode".
* regcache.h: Delete DEPRECATED_REGISTER_VIRTUAL_SIZE and
DEPRECATED_REGISTER_RAW_SIZE from comments.
* regcache.c (init_regcache_descr, regcache_dump): Do not check or
use DEPRECATED_REGISTER_VIRTUAL_SIZE and
DEPRECATED_REGISTER_RAW_SIZE.
* findvar.c (value_of_register): Simplify by assuming that the
registers raw and virtual sizes are identical.
* regcache.h: Delete DEPRECATED_REGISTER_VIRTUAL_TYPE in
comment.
* arch-utils.c (generic_register_size): Simplify by assuming
register_type.
* mips-tdep.c (read_signed_register): New function, moved to here
from "regcache.c".
(read_signed_register_pid): Ditto.
* regcache.c (read_signed_register_pid): Delete function, moved to
"mips-tdep.c".
(read_signed_register): Ditto.
* regcache.h (read_signed_register): Delete declaration.
(read_signed_register_pid): Delete declaration.
* regcache.c (regcache_cooked_write_signed): New function.
(regcache_cooked_write_unsigned): New function.
(regcache_cooked_read_unsigned): Fix regnum in range assertion.
(regcache_cooked_read_signed): Fix regnum in range assertion.
* regcache.h (regcache_cooked_write_signed): Declare.
(regcache_cooked_write_unsigned): Declare.
* regcache.c (register_size): New function.
* regcache.h (register_size): Declare
* d10v-tdep.c: Use register_size instead of REGISTER_RAW_SIZE, use
max_register_size instead of MAX_REGISTER_RAW_SIZE.
* regcache.c (struct regcache): Replace passthough_p with
readonly_p.
(regcache_xmalloc): Initialize readonly_p.
(build_regcache): Initialize readonly_p.
(regcache_save): New function.
(regcache_restore): New function.
(regcache_cpy): Re-implement using regcache_save and
regcache_restore.
(regcache_raw_read): Update.
(regcache_cooked_read): When a read-only cache, checked for cached
pseudo register values.
(regcache_raw_write): Assert that the cache is not read-only.
Remove code handling a non-passthrough cache.
* regcache.h (regcache_save): Declare.
(regcache_restore): Declare.
* regcache.h (register_offset_hack): Declare.
(regcache_cooked_read_using_offset_hack): Declare.
(regcache_cooked_write_using_offset_hack): Declare.
* regcache.c (register_offset_hack): New function.
(regcache_cooked_read_using_offset_hack): New function.
(regcache_cooked_write_using_offset_hack): New function.
(regcache_dump): Check that the registers, according to their
offset, are packed hard against each other.
(cooked_xfer_using_offset_hack): New function.
* regcache.c (struct regcache_descr): Add field register_type.
(init_legacy_regcache_descr): Pass a pre-allocated regcache_descr
in as a parameter
(init_regcache_descr): Initialize register_type. Pass the descr
to init_legacy_regcache_descr. Use register_type instead of
REGISTER_VIRTUAL_TYPE.
(register_type): New function.
(regcache_dump): Replace REGISTER_VIRTUAL_TYPE with register_type.
* regcache.h (register_type): Declare.
* regcache.c (max_register_size): New function.
(init_legacy_regcache_descr): Ensure that max_register_size is
large enough for REGISTER_VIRTUAL_SIZE.
* regcache.h (max_register_size): Declare.
* i386-tdep.c (i386_register_name): Handle mmx registers.
(mmx_regnum_p): New function.
(i386_mmx_names): New array.
(mmx_num_regs): New variable.
(i386_pseudo_register_read): New function.
(i386_pseudo_register_write): New function.
(mmx_regnum_to_fp_regnum): New function. Code from Fernando Nasser.
* regcache.c (regcache_raw_read_unsigned): New function.
(regcache_raw_read_signed): New function.
* regcache.h (regcache_raw_read_unsigned): Declare.
(regcache_raw_read_signed): Declare.
deprecated_grub_regcache_for_registers.
* values.c: Include "regcache.h".
(value_being_returned): Update. Use
deprecated_grub_regcache_for_registers to extract the register
buffer address.
* value.h (value_being_returned): Change ``retbuf'' parameter to a
``struct regcache''.
* Makefile.in (values.o): Add dependency on $(regcache_h).
* inferior.h (run_stack_dummy): Change type of second parameter to
a ``struct regcache''.
* valops.c (hand_function_call): Change type of retbuf to ``struct
regcache''. Allocate using regcache_xmalloc, clean using
make_cleanup_regcache_xfree.
* infcmd.c (run_stack_dummy): Update. Use
regcache_cpu_no_passthrough instead of memcpy to copy the buffer.
* regcache.c (do_regcache_xfree): New function.
(make_cleanup_regcache_xfree): New function.
* regcache.h (make_cleanup_regcache_xfree): Declare.
Tom Tromey
Yao Qi
Alan Hayward
Simon Marchi
Joel Brobecker
Pedro Alves
Antoine Tremblay
Jan Kratochvil
Gary Benson
Thomas Schwinge
Andreas Arnez
Joel Brobecker
David S. Miller
Yao Qi
Tom Tromey
Michael Snyder
Daniel Jacobowitz
Ulrich Weigand
Markus Deuling
Mark Kettenis
Eli Zaretskii
Andrew Cagney