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| author | Simon Marchi <simon.marchi@efficios.com> | 2020-02-14 14:41:07 -0500 |
|---|---|---|
| committer | Simon Marchi <simon.marchi@efficios.com> | 2020-02-14 14:41:07 -0500 |
| commit | 5f661e03972e3412778c0bee8d20522b9bffea76 (patch) | |
| tree | 287495c0d6f9659408ec5becf385f73387e5cf42 /gnulib/aclocal.m4 | |
| parent | 8084e579e114e607cb65482c43566e2c5c844bf6 (diff) | |
| download | gdb-5f661e03972e3412778c0bee8d20522b9bffea76.zip gdb-5f661e03972e3412778c0bee8d20522b9bffea76.tar.gz gdb-5f661e03972e3412778c0bee8d20522b9bffea76.tar.bz2 | |
gnulib: import count-one-bits module and use it
For a fix I intend to submit, I would need a function that counts the
number of set bits in a word. There is __builtin_popcount that is
supported by gcc and clang, but there is also a gnulib module that wraps
that and provides a fallback for other compilers, so I think it would be
good to use it.
I also noticed that there is a bitcount function in arch/arm.c, so I
thought that as a first step I would replace that one with the gnulib
count-one-bits module. This is what this patch does.
The gnulib module provides multiple functions, with various parameter
length (unsigned int, unsigned long int, unsigned long long int), I
chose the one that made sense for each call site based on the argument
type.
gnulib/ChangeLog:
* update-gnulib.sh (IMPORTED_GNULIB_MODULES): Import
count-one-bits module.
* configure: Re-generate.
* aclocal.m4: Re-generate.
* Makefile.in: Re-generate.
* import/count-one-bits.c: New file.
* import/count-one-bits.h: New file.
* import/Makefile.am: Re-generate.
* import/Makefile.in: Re-generate.
* import/m4/gnulib-cache.m4: Re-generate.
* import/m4/gnulib-comp.m4: Re-generate.
* import/m4/count-one-bits.m4: New file.
gdb/ChangeLog:
* arm-tdep.c: Include count-one-bits.h.
(cleanup_block_store_pc): Use count_one_bits.
(cleanup_block_load_pc): Use count_one_bits.
(arm_copy_block_xfer): Use count_one_bits.
(thumb2_copy_block_xfer): Use count_one_bits.
(thumb_copy_pop_pc_16bit): Use count_one_bits.
* arch/arm-get-next-pcs.c: Include count-one-bits.h.
(thumb_get_next_pcs_raw): Use count_one_bits.
(arm_get_next_pcs_raw): Use count_one_bits_l.
* arch/arm.c (bitcount): Remove.
* arch/arm.h (bitcount): Remove.
Diffstat (limited to 'gnulib/aclocal.m4')
| -rw-r--r-- | gnulib/aclocal.m4 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gnulib/aclocal.m4 b/gnulib/aclocal.m4 index ed1f4f7..4ad6a3d 100644 --- a/gnulib/aclocal.m4 +++ b/gnulib/aclocal.m4 @@ -1195,6 +1195,7 @@ m4_include([import/m4/chdir-long.m4]) m4_include([import/m4/close.m4]) m4_include([import/m4/closedir.m4]) m4_include([import/m4/codeset.m4]) +m4_include([import/m4/count-one-bits.m4]) m4_include([import/m4/d-ino.m4]) m4_include([import/m4/d-type.m4]) m4_include([import/m4/dirent_h.m4]) |