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author | Richard Henderson <richard.henderson@linaro.org> | 2022-10-17 09:17:20 +1000 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2023-02-04 06:19:42 -1000 |
commit | b959822c94e6d32b36fad038e79c14f841e585c1 (patch) | |
tree | b2c201a190f542726172ee62d6b4738dd14b0568 /util | |
parent | c6556aa0c8de8718813fea0ca61232632bf33c42 (diff) | |
download | qemu-b959822c94e6d32b36fad038e79c14f841e585c1.zip qemu-b959822c94e6d32b36fad038e79c14f841e585c1.tar.gz qemu-b959822c94e6d32b36fad038e79c14f841e585c1.tar.bz2 |
include/qemu/int128: Use Int128 structure for TCI
We are about to allow passing Int128 to/from tcg helper functions,
but libffi doesn't support __int128_t, so use the structure.
In order for atomic128.h to continue working, we must provide
a mechanism to frob between real __int128_t and the structure.
Provide a new union, Int128Alias, for this. We cannot modify
Int128 itself, as any changed alignment would also break libffi.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'util')
-rw-r--r-- | util/int128.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/util/int128.c b/util/int128.c index ed8f25f..df6c633 100644 --- a/util/int128.c +++ b/util/int128.c @@ -144,4 +144,46 @@ Int128 int128_rems(Int128 a, Int128 b) return r; } +#elif defined(CONFIG_TCG_INTERPRETER) + +Int128 int128_divu(Int128 a_s, Int128 b_s) +{ + Int128Alias r, a, b; + + a.s = a_s; + b.s = b_s; + r.u = a.u / b.u; + return r.s; +} + +Int128 int128_remu(Int128 a_s, Int128 b_s) +{ + Int128Alias r, a, b; + + a.s = a_s; + b.s = b_s; + r.u = a.u % b.u; + return r.s; +} + +Int128 int128_divs(Int128 a_s, Int128 b_s) +{ + Int128Alias r, a, b; + + a.s = a_s; + b.s = b_s; + r.i = a.i / b.i; + return r.s; +} + +Int128 int128_rems(Int128 a_s, Int128 b_s) +{ + Int128Alias r, a, b; + + a.s = a_s; + b.s = b_s; + r.i = a.i % b.i; + return r.s; +} + #endif |