mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

tcg: add dup_const_tl wrapper

Browse Source 
dup_const always generates a uint64_t, which may exceed the size of a
target_long (generating warnings with recent-enough compilers).

To ensure that we can use dup_const both for 64bit and 32bit targets,
this adds dup_const_tl, which either maps back to dup_const (for 64bit
targets) or provides a similar implementation using 32bit constants.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Philipp Tomsich <philipp.tomsich@vrull.eu>
Message-Id: <20211003214243.3813425-1-philipp.tomsich@vrull.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Philipp Tomsich 2021-10-03 23:42:42 +02:00 committed by Richard Henderson
parent 08a13c4b24
commit db637f270b
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
include/tcg/tcg.h
View File

@ -1272,6 +1272,18 @@ uint64_t dup_const(unsigned vece, uint64_t c);
: (qemu_build_not_reached_always(), 0)) \ : (qemu_build_not_reached_always(), 0)) \
: dup_const(VECE, C)) : dup_const(VECE, C))
#if TARGET_LONG_BITS == 64
# define dup_const_tl dup_const
#else
# define dup_const_tl(VECE, C) \
(__builtin_constant_p(VECE) \
? ( (VECE) == MO_8 ? 0x01010101ul * (uint8_t)(C) \
: (VECE) == MO_16 ? 0x00010001ul * (uint16_t)(C) \
: (VECE) == MO_32 ? 0x00000001ul * (uint32_t)(C) \
: (qemu_build_not_reached_always(), 0)) \
: (target_long)dup_const(VECE, C))
#endif
/* /*
* Memory helpers that will be used by TCG generated code. * Memory helpers that will be used by TCG generated code.
*/ */